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gtk2/gtk/gtktextview.c
Carlos Garnacho 5b78fe2721 gtktextview: Also reset IM context after IM surrounding text deletion 
When the IM commands the GtkText to delete text, the cursor position
would change, and so would the surrounding text. Reset the IM context
so that these updates are properly picked up by the IM.

Fixes backspace	key behavior in	the GNOME Shell OSK, since that	relies
on the surrounding text	being properly updated for the next iteration.
2022-09-06 22:17:40 +02:00

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/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */
/* GTK - The GIMP Toolkit
* gtktextview.c Copyright (C) 2000 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtktextviewprivate.h"
#include <string.h>
#include "gtkadjustmentprivate.h"
#include "gtkcsscolorvalueprivate.h"
#include "gtkdebug.h"
#include "gtkdragsourceprivate.h"
#include "gtkdropcontrollermotion.h"
#include "gtkintl.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkrenderbackgroundprivate.h"
#include "gtksettings.h"
#include "gtktextiterprivate.h"
#include "gtkimmulticontext.h"
#include "gtkprivate.h"
#include "gtktextutil.h"
#include "gtkwidgetprivate.h"
#include "gtkwindow.h"
#include "gtkscrollable.h"
#include "gtktypebuiltins.h"
#include "gtktextviewchildprivate.h"
#include "gtktexthandleprivate.h"
#include "gtkstylecontextprivate.h"
#include "gtkpopover.h"
#include "gtkmagnifierprivate.h"
#include "gtkemojichooser.h"
#include "gtkpango.h"
#include "gtknative.h"
#include "gtkwidgetprivate.h"
#include "gtkjoinedmenuprivate.h"
#include "gtkcsslineheightvalueprivate.h"
#include "gtkcssenumvalueprivate.h"
/**
* GtkTextView:
*
* A widget that displays the contents of a [class@Gtk.TextBuffer].
*
* ![An example GtkTextview](multiline-text.png)
*
* You may wish to begin by reading the [conceptual overview](section-text-widget.html),
* which gives an overview of all the objects and data types related to the
* text widget and how they work together.
*
* ## CSS nodes
*
* ```
* textview.view
* ├── border.top
* ├── border.left
* ├── text
* │ ╰── [selection]
* ├── border.right
* ├── border.bottom
* ╰── [window.popup]
* ```
*
* `GtkTextView` has a main css node with name textview and style class .view,
* and subnodes for each of the border windows, and the main text area,
* with names border and text, respectively. The border nodes each get
* one of the style classes .left, .right, .top or .bottom.
*
* A node representing the selection will appear below the text node.
*
* If a context menu is opened, the window node will appear as a subnode
* of the main node.
*
* ## Accessibility
*
* `GtkTextView` uses the %GTK_ACCESSIBLE_ROLE_TEXT_BOX role.
*/
/* How scrolling, validation, exposes, etc. work.
*
* The expose_event handler has the invariant that the onscreen lines
* have been validated.
*
* There are two ways that onscreen lines can become invalid. The first
* is to change which lines are onscreen. This happens when the value
* of a scroll adjustment changes. So the code path begins in
* gtk_text_view_value_changed() and goes like this:
* - gdk_surface_scroll() to reflect the new adjustment value
* - validate the lines that were moved onscreen
* - gdk_surface_process_updates() to handle the exposes immediately
*
* The second way is that you get the “invalidated” signal from the layout,
* indicating that lines have become invalid. This code path begins in
* invalidated_handler() and goes like this:
* - install high-priority idle which does the rest of the steps
* - if a scroll is pending from scroll_to_mark(), do the scroll,
* jumping to the gtk_text_view_value_changed() code path
* - otherwise, validate the onscreen lines
* - DO NOT process updates
*
* In both cases, validating the onscreen lines can trigger a scroll
* due to maintaining the first_para on the top of the screen.
* If validation triggers a scroll, we jump to the top of the code path
* for value_changed, and bail out of the current code path.
*
* Also, in size_allocate, if we invalidate some lines from changing
* the layout width, we need to go ahead and run the high-priority idle,
* because GTK sends exposes right after doing the size allocates without
* returning to the main loop. This is also why the high-priority idle
* is at a higher priority than resizing.
*
*/
#if 0
#define DEBUG_VALIDATION_AND_SCROLLING
#endif
#ifdef DEBUG_VALIDATION_AND_SCROLLING
#define DV(x) (x)
#else
#define DV(x)
#endif
#define SCREEN_WIDTH(widget) text_window_get_width (GTK_TEXT_VIEW (widget)->priv->text_window)
#define SCREEN_HEIGHT(widget) text_window_get_height (GTK_TEXT_VIEW (widget)->priv->text_window)
#define SPACE_FOR_CURSOR 1
typedef struct _GtkTextWindow GtkTextWindow;
typedef struct _GtkTextPendingScroll GtkTextPendingScroll;
enum
{
TEXT_HANDLE_CURSOR,
TEXT_HANDLE_SELECTION_BOUND,
TEXT_HANDLE_N_HANDLES
};
struct _GtkTextViewPrivate
{
GtkTextLayout *layout;
GtkTextBuffer *buffer;
guint blink_time; /* time in msec the cursor has blinked since last user event */
guint im_spot_idle;
char *im_module;
int dnd_x;
int dnd_y;
GtkTextHandle *text_handles[TEXT_HANDLE_N_HANDLES];
GtkWidget *selection_bubble;
guint selection_bubble_timeout_id;
GtkWidget *magnifier_popover;
GtkWidget *magnifier;
GtkBorder border_window_size;
GtkTextWindow *text_window;
GQueue anchored_children;
GtkTextViewChild *left_child;
GtkTextViewChild *right_child;
GtkTextViewChild *top_child;
GtkTextViewChild *bottom_child;
GtkTextViewChild *center_child;
GtkAdjustment *hadjustment;
GtkAdjustment *vadjustment;
/* X offset between widget coordinates and buffer coordinates
* taking left_padding in account
*/
int xoffset;
/* Y offset between widget coordinates and buffer coordinates
* taking top_padding and top_margin in account
*/
int yoffset;
/* Width and height of the buffer */
int width;
int height;
/* The virtual cursor position is normally the same as the
* actual (strong) cursor position, except in two circumstances:
*
* a) When the cursor is moved vertically with the keyboard
* b) When the text view is scrolled with the keyboard
*
* In case a), virtual_cursor_x is preserved, but not virtual_cursor_y
* In case b), both virtual_cursor_x and virtual_cursor_y are preserved.
*/
int virtual_cursor_x; /* -1 means use actual cursor position */
int virtual_cursor_y; /* -1 means use actual cursor position */
GtkTextMark *first_para_mark; /* Mark at the beginning of the first onscreen paragraph */
int first_para_pixels; /* Offset of top of screen in the first onscreen paragraph */
guint64 blink_start_time;
guint blink_tick;
float cursor_alpha;
guint scroll_timeout;
guint first_validate_idle; /* Idle to revalidate onscreen portion, runs before resize */
guint incremental_validate_idle; /* Idle to revalidate offscreen portions, runs after redraw */
/* Mark for drop target */
GtkTextMark *dnd_mark;
/* Mark for selection of drag source */
GtkTextMark *dnd_drag_begin_mark;
GtkTextMark *dnd_drag_end_mark;
GtkIMContext *im_context;
GtkWidget *popup_menu;
GMenuModel *extra_menu;
GtkTextPendingScroll *pending_scroll;
GtkGesture *drag_gesture;
GtkEventController *key_controller;
GtkCssNode *selection_node;
GdkDrag *drag;
/* Default style settings */
int pixels_above_lines;
int pixels_below_lines;
int pixels_inside_wrap;
GtkWrapMode wrap_mode;
GtkJustification justify;
int left_margin;
int right_margin;
int top_margin;
int bottom_margin;
int left_padding;
int right_padding;
int top_padding;
int bottom_padding;
int indent;
guint32 obscured_cursor_timestamp;
gint64 handle_place_time;
PangoTabArray *tabs;
guint editable : 1;
guint overwrite_mode : 1;
guint cursor_visible : 1;
/* if we have reset the IM since the last character entered */
guint need_im_reset : 1;
guint accepts_tab : 1;
/* debug flag - means that we've validated onscreen since the
* last "invalidate" signal from the layout
*/
guint onscreen_validated : 1;
guint mouse_cursor_obscured : 1;
guint scroll_after_paste : 1;
guint text_handles_enabled : 1;
/* GtkScrollablePolicy needs to be checked when
* driving the scrollable adjustment values */
guint hscroll_policy : 1;
guint vscroll_policy : 1;
guint cursor_handle_dragged : 1;
guint selection_handle_dragged : 1;
};
struct _GtkTextPendingScroll
{
GtkTextMark *mark;
double within_margin;
gboolean use_align;
double xalign;
double yalign;
};
typedef enum
{
SELECT_CHARACTERS,
SELECT_WORDS,
SELECT_LINES
} SelectionGranularity;
enum
{
MOVE_CURSOR,
PAGE_HORIZONTALLY,
SET_ANCHOR,
INSERT_AT_CURSOR,
DELETE_FROM_CURSOR,
BACKSPACE,
CUT_CLIPBOARD,
COPY_CLIPBOARD,
PASTE_CLIPBOARD,
TOGGLE_OVERWRITE,
MOVE_VIEWPORT,
SELECT_ALL,
TOGGLE_CURSOR_VISIBLE,
PREEDIT_CHANGED,
EXTEND_SELECTION,
INSERT_EMOJI,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_PIXELS_ABOVE_LINES,
PROP_PIXELS_BELOW_LINES,
PROP_PIXELS_INSIDE_WRAP,
PROP_EDITABLE,
PROP_WRAP_MODE,
PROP_JUSTIFICATION,
PROP_LEFT_MARGIN,
PROP_RIGHT_MARGIN,
PROP_TOP_MARGIN,
PROP_BOTTOM_MARGIN,
PROP_INDENT,
PROP_TABS,
PROP_CURSOR_VISIBLE,
PROP_BUFFER,
PROP_OVERWRITE,
PROP_ACCEPTS_TAB,
PROP_IM_MODULE,
PROP_HADJUSTMENT,
PROP_VADJUSTMENT,
PROP_HSCROLL_POLICY,
PROP_VSCROLL_POLICY,
PROP_INPUT_PURPOSE,
PROP_INPUT_HINTS,
PROP_MONOSPACE,
PROP_EXTRA_MENU
};
static GQuark quark_text_selection_data = 0;
static GQuark quark_gtk_signal = 0;
static GQuark quark_text_view_child = 0;
static void gtk_text_view_finalize (GObject *object);
static void gtk_text_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_text_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_text_view_dispose (GObject *object);
static void gtk_text_view_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline);
static void gtk_text_view_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline);
static void gtk_text_view_realize (GtkWidget *widget);
static void gtk_text_view_unrealize (GtkWidget *widget);
static void gtk_text_view_map (GtkWidget *widget);
static void gtk_text_view_css_changed (GtkWidget *widget,
GtkCssStyleChange *change);
static void gtk_text_view_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction);
static void gtk_text_view_system_setting_changed (GtkWidget *widget,
GtkSystemSetting setting);
static void gtk_text_view_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state);
static void gtk_text_view_click_gesture_pressed (GtkGestureClick *gesture,
int n_press,
double x,
double y,
GtkTextView *text_view);
static void gtk_text_view_drag_gesture_update (GtkGestureDrag *gesture,
double offset_x,
double offset_y,
GtkTextView *text_view);
static void gtk_text_view_drag_gesture_end (GtkGestureDrag *gesture,
double offset_x,
double offset_y,
GtkTextView *text_view);
static gboolean gtk_text_view_key_controller_key_pressed (GtkEventControllerKey *controller,
guint keyval,
guint keycode,
GdkModifierType state,
GtkTextView *text_view);
static void gtk_text_view_key_controller_im_update (GtkEventControllerKey *controller,
GtkTextView *text_view);
static void gtk_text_view_focus_in (GtkWidget *widget);
static void gtk_text_view_focus_out (GtkWidget *widget);
static void gtk_text_view_motion (GtkEventController *controller,
double x,
double y,
gpointer user_data);
static void gtk_text_view_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot);
static void gtk_text_view_select_all (GtkWidget *widget,
gboolean select);
static gboolean get_middle_click_paste (GtkTextView *text_view);
static GtkTextBuffer* gtk_text_view_create_buffer (GtkTextView *text_view);
/* Target side drag signals */
static void gtk_text_view_drag_leave (GtkDropTarget *dest,
GtkTextView *text_view);
static GdkDragAction
gtk_text_view_drag_motion (GtkDropTarget *dest,
double x,
double y,
GtkTextView *text_view);
static gboolean gtk_text_view_drag_drop (GtkDropTarget *dest,
const GValue *value,
double x,
double y,
GtkTextView *text_view);
static void gtk_text_view_popup_menu (GtkWidget *widget,
const char *action_name,
GVariant *parameters);
static void gtk_text_view_move_cursor (GtkTextView *text_view,
GtkMovementStep step,
int count,
gboolean extend_selection);
static void gtk_text_view_move_viewport (GtkTextView *text_view,
GtkScrollStep step,
int count);
static void gtk_text_view_set_anchor (GtkTextView *text_view);
static gboolean gtk_text_view_scroll_pages (GtkTextView *text_view,
int count,
gboolean extend_selection);
static gboolean gtk_text_view_scroll_hpages(GtkTextView *text_view,
int count,
gboolean extend_selection);
static void gtk_text_view_insert_at_cursor (GtkTextView *text_view,
const char *str);
static void gtk_text_view_delete_from_cursor (GtkTextView *text_view,
GtkDeleteType type,
int count);
static void gtk_text_view_backspace (GtkTextView *text_view);
static void gtk_text_view_cut_clipboard (GtkTextView *text_view);
static void gtk_text_view_copy_clipboard (GtkTextView *text_view);
static void gtk_text_view_paste_clipboard (GtkTextView *text_view);
static void gtk_text_view_toggle_overwrite (GtkTextView *text_view);
static void gtk_text_view_toggle_cursor_visible (GtkTextView *text_view);
static void gtk_text_view_unselect (GtkTextView *text_view);
static void gtk_text_view_validate_onscreen (GtkTextView *text_view);
static void gtk_text_view_get_first_para_iter (GtkTextView *text_view,
GtkTextIter *iter);
static void gtk_text_view_update_layout_width (GtkTextView *text_view);
static void gtk_text_view_set_attributes_from_style (GtkTextView *text_view,
GtkTextAttributes *values);
static void gtk_text_view_ensure_layout (GtkTextView *text_view);
static void gtk_text_view_destroy_layout (GtkTextView *text_view);
static void gtk_text_view_check_keymap_direction (GtkTextView *text_view);
static void gtk_text_view_start_selection_drag (GtkTextView *text_view,
const GtkTextIter *iter,
SelectionGranularity granularity,
gboolean extends);
static gboolean gtk_text_view_end_selection_drag (GtkTextView *text_view);
static void gtk_text_view_start_selection_dnd (GtkTextView *text_view,
const GtkTextIter *iter,
GdkEvent *event,
int x,
int y);
static void gtk_text_view_check_cursor_blink (GtkTextView *text_view);
static void gtk_text_view_pend_cursor_blink (GtkTextView *text_view);
static void gtk_text_view_stop_cursor_blink (GtkTextView *text_view);
static void gtk_text_view_reset_blink_time (GtkTextView *text_view);
static void gtk_text_view_value_changed (GtkAdjustment *adjustment,
GtkTextView *view);
static void gtk_text_view_commit_handler (GtkIMContext *context,
const char *str,
GtkTextView *text_view);
static void gtk_text_view_commit_text (GtkTextView *text_view,
const char *text);
static void gtk_text_view_preedit_start_handler (GtkIMContext *context,
GtkTextView *text_view);
static void gtk_text_view_preedit_changed_handler (GtkIMContext *context,
GtkTextView *text_view);
static gboolean gtk_text_view_retrieve_surrounding_handler (GtkIMContext *context,
GtkTextView *text_view);
static gboolean gtk_text_view_delete_surrounding_handler (GtkIMContext *context,
int offset,
int n_chars,
GtkTextView *text_view);
static void gtk_text_view_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data);
static void gtk_text_view_paste_done_handler (GtkTextBuffer *buffer,
GdkClipboard *clipboard,
gpointer data);
static void gtk_text_view_buffer_changed_handler (GtkTextBuffer *buffer,
gpointer data);
static void gtk_text_view_buffer_notify_redo (GtkTextBuffer *buffer,
GParamSpec *pspec,
GtkTextView *view);
static void gtk_text_view_buffer_notify_undo (GtkTextBuffer *buffer,
GParamSpec *pspec,
GtkTextView *view);
static void gtk_text_view_get_virtual_cursor_pos (GtkTextView *text_view,
GtkTextIter *cursor,
int *x,
int *y);
static void gtk_text_view_set_virtual_cursor_pos (GtkTextView *text_view,
int x,
int y);
static void gtk_text_view_do_popup (GtkTextView *text_view,
GdkEvent *event);
static void cancel_pending_scroll (GtkTextView *text_view);
static void gtk_text_view_queue_scroll (GtkTextView *text_view,
GtkTextMark *mark,
double within_margin,
gboolean use_align,
double xalign,
double yalign);
static gboolean gtk_text_view_flush_scroll (GtkTextView *text_view);
static void gtk_text_view_update_adjustments (GtkTextView *text_view);
static void gtk_text_view_invalidate (GtkTextView *text_view);
static void gtk_text_view_flush_first_validate (GtkTextView *text_view);
static void gtk_text_view_set_hadjustment (GtkTextView *text_view,
GtkAdjustment *adjustment);
static void gtk_text_view_set_vadjustment (GtkTextView *text_view,
GtkAdjustment *adjustment);
static void gtk_text_view_set_hadjustment_values (GtkTextView *text_view);
static void gtk_text_view_set_vadjustment_values (GtkTextView *text_view);
static void gtk_text_view_update_im_spot_location (GtkTextView *text_view);
static void gtk_text_view_insert_emoji (GtkTextView *text_view);
static void update_node_ordering (GtkWidget *widget);
static void gtk_text_view_update_pango_contexts (GtkTextView *text_view);
/* GtkTextHandle handlers */
static void gtk_text_view_handle_drag_started (GtkTextHandle *handle,
GtkTextView *text_view);
static void gtk_text_view_handle_dragged (GtkTextHandle *handle,
int x,
int y,
GtkTextView *text_view);
static void gtk_text_view_handle_drag_finished (GtkTextHandle *handle,
GtkTextView *text_view);
static void gtk_text_view_update_handles (GtkTextView *text_view);
static void gtk_text_view_selection_bubble_popup_unset (GtkTextView *text_view);
static void gtk_text_view_selection_bubble_popup_set (GtkTextView *text_view);
static gboolean gtk_text_view_extend_selection (GtkTextView *text_view,
GtkTextExtendSelection granularity,
const GtkTextIter *location,
GtkTextIter *start,
GtkTextIter *end);
static void extend_selection (GtkTextView *text_view,
SelectionGranularity granularity,
const GtkTextIter *location,
GtkTextIter *start,
GtkTextIter *end);
static void gtk_text_view_update_clipboard_actions (GtkTextView *text_view);
static void gtk_text_view_update_emoji_action (GtkTextView *text_view);
static void gtk_text_view_activate_clipboard_cut (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_activate_clipboard_copy (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_activate_clipboard_paste (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_activate_selection_delete (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_activate_selection_select_all (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_activate_misc_insert_emoji (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_real_undo (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_real_redo (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
/* FIXME probably need the focus methods. */
typedef struct
{
GList link;
GtkWidget *widget;
GtkTextChildAnchor *anchor;
int from_top_of_line;
int from_left_of_buffer;
} AnchoredChild;
static AnchoredChild *anchored_child_new (GtkWidget *child,
GtkTextChildAnchor *anchor,
GtkTextLayout *layout);
static void anchored_child_free (AnchoredChild *child);
struct _GtkTextWindow
{
GtkTextWindowType type;
GtkWidget *widget;
GtkCssNode *css_node;
GdkRectangle allocation;
};
static GtkTextWindow *text_window_new (GtkWidget *widget);
static void text_window_free (GtkTextWindow *win);
static void text_window_size_allocate (GtkTextWindow *win,
GdkRectangle *rect);
static int text_window_get_width (GtkTextWindow *win);
static int text_window_get_height (GtkTextWindow *win);
static guint signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkTextView, gtk_text_view, GTK_TYPE_WIDGET,
G_ADD_PRIVATE (GtkTextView)
G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
static GtkTextBuffer*
get_buffer (GtkTextView *text_view)
{
if (text_view->priv->buffer == NULL)
{
GtkTextBuffer *b;
b = GTK_TEXT_VIEW_GET_CLASS (text_view)->create_buffer (text_view);
gtk_text_view_set_buffer (text_view, b);
g_object_unref (b);
}
return text_view->priv->buffer;
}
#define UPPER_OFFSET_ANCHOR 0.8
#define LOWER_OFFSET_ANCHOR 0.2
static gboolean
check_scroll (double offset, GtkAdjustment *adjustment)
{
if ((offset > UPPER_OFFSET_ANCHOR &&
gtk_adjustment_get_value (adjustment) + gtk_adjustment_get_page_size (adjustment) < gtk_adjustment_get_upper (adjustment)) ||
(offset < LOWER_OFFSET_ANCHOR &&
gtk_adjustment_get_value (adjustment) > gtk_adjustment_get_lower (adjustment)))
return TRUE;
return FALSE;
}
static int
gtk_text_view_drop_motion_scroll_timeout (gpointer data)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkTextIter newplace;
double pointer_xoffset, pointer_yoffset;
text_view = GTK_TEXT_VIEW (data);
priv = text_view->priv;
gtk_text_layout_get_iter_at_pixel (priv->layout,
&newplace,
priv->dnd_x + priv->xoffset,
priv->dnd_y + priv->yoffset);
gtk_text_buffer_move_mark (get_buffer (text_view), priv->dnd_mark, &newplace);
pointer_xoffset = (double) priv->dnd_x / text_window_get_width (priv->text_window);
pointer_yoffset = (double) priv->dnd_y / text_window_get_height (priv->text_window);
if (check_scroll (pointer_xoffset, priv->hadjustment) ||
check_scroll (pointer_yoffset, priv->vadjustment))
{
/* do not make offsets surpass lower nor upper anchors, this makes
* scrolling speed relative to the distance of the pointer to the
* anchors when it moves beyond them.
*/
pointer_xoffset = CLAMP (pointer_xoffset, LOWER_OFFSET_ANCHOR, UPPER_OFFSET_ANCHOR);
pointer_yoffset = CLAMP (pointer_yoffset, LOWER_OFFSET_ANCHOR, UPPER_OFFSET_ANCHOR);
gtk_text_view_scroll_to_mark (text_view,
priv->dnd_mark,
0., TRUE, pointer_xoffset, pointer_yoffset);
}
return G_SOURCE_CONTINUE;
}
static void
gtk_text_view_drop_scroll_motion (GtkDropControllerMotion *motion,
double x,
double y,
GtkTextView *self)
{
GtkTextViewPrivate *priv = self->priv;
GdkRectangle target_rect;
target_rect = priv->text_window->allocation;
if (x < target_rect.x ||
y < target_rect.y ||
x > (target_rect.x + target_rect.width) ||
y > (target_rect.y + target_rect.height))
{
priv->dnd_x = priv->dnd_y = -1;
g_clear_handle_id (&priv->scroll_timeout, g_source_remove);
return;
}
/* DnD uses text window coords, so subtract extra widget
* coords that happen e.g. when displaying line numbers.
*/
priv->dnd_x = x - target_rect.x;
priv->dnd_y = y - target_rect.y;
if (!priv->scroll_timeout)
{
priv->scroll_timeout = g_timeout_add (100, gtk_text_view_drop_motion_scroll_timeout, self);
gdk_source_set_static_name_by_id (priv->scroll_timeout, "[gtk] gtk_text_view_drop_motion_scroll_timeout");
}
}
static void
gtk_text_view_drop_scroll_leave (GtkDropControllerMotion *motion,
GtkTextView *self)
{
GtkTextViewPrivate *priv = self->priv;
priv->dnd_x = priv->dnd_y = -1;
g_clear_handle_id (&priv->scroll_timeout, g_source_remove);
}
static void
add_move_binding (GtkWidgetClass *widget_class,
guint keyval,
guint modmask,
GtkMovementStep step,
int count)
{
g_assert ((modmask & GDK_SHIFT_MASK) == 0);
gtk_widget_class_add_binding_signal (widget_class,
keyval, modmask,
"move-cursor",
"(iib)", step, count, FALSE);
/* Selection-extending version */
gtk_widget_class_add_binding_signal (widget_class,
keyval, modmask | GDK_SHIFT_MASK,
"move-cursor",
"(iib)", step, count, TRUE);
}
static void
gtk_text_view_class_init (GtkTextViewClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
/* Default handlers and virtual methods
*/
gobject_class->set_property = gtk_text_view_set_property;
gobject_class->get_property = gtk_text_view_get_property;
gobject_class->finalize = gtk_text_view_finalize;
gobject_class->dispose = gtk_text_view_dispose;
widget_class->realize = gtk_text_view_realize;
widget_class->unrealize = gtk_text_view_unrealize;
widget_class->map = gtk_text_view_map;
widget_class->css_changed = gtk_text_view_css_changed;
widget_class->direction_changed = gtk_text_view_direction_changed;
widget_class->system_setting_changed = gtk_text_view_system_setting_changed;
widget_class->state_flags_changed = gtk_text_view_state_flags_changed;
widget_class->measure = gtk_text_view_measure;
widget_class->size_allocate = gtk_text_view_size_allocate;
widget_class->snapshot = gtk_text_view_snapshot;
klass->move_cursor = gtk_text_view_move_cursor;
klass->set_anchor = gtk_text_view_set_anchor;
klass->insert_at_cursor = gtk_text_view_insert_at_cursor;
klass->delete_from_cursor = gtk_text_view_delete_from_cursor;
klass->backspace = gtk_text_view_backspace;
klass->cut_clipboard = gtk_text_view_cut_clipboard;
klass->copy_clipboard = gtk_text_view_copy_clipboard;
klass->paste_clipboard = gtk_text_view_paste_clipboard;
klass->toggle_overwrite = gtk_text_view_toggle_overwrite;
klass->create_buffer = gtk_text_view_create_buffer;
klass->extend_selection = gtk_text_view_extend_selection;
klass->insert_emoji = gtk_text_view_insert_emoji;
/*
* Properties
*/
/**
* GtkTextview:pixels-above-lines: (attributes org.gtk.Property.get=gtk_text_view_get_pixels_above_lines org.gtk.Property.set=gtk_text_view_set_pixels_above_lines)
*
* Pixels of blank space above paragraphs.
*/
g_object_class_install_property (gobject_class,
PROP_PIXELS_ABOVE_LINES,
g_param_spec_int ("pixels-above-lines", NULL, NULL,
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextview:pixels-below-lines: (attributes org.gtk.Property.get=gtk_text_view_get_pixels_below_lines org.gtk.Property.set=gtk_text_view_set_pixels_below_lines)
*
* Pixels of blank space below paragraphs.
*/
g_object_class_install_property (gobject_class,
PROP_PIXELS_BELOW_LINES,
g_param_spec_int ("pixels-below-lines", NULL, NULL,
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextview:pixels-inside-wrap: (attributes org.gtk.Property.get=gtk_text_view_get_pixels_inside_wrap org.gtk.Property.set=gtk_text_view_set_pixels_inside_wrap)
*
* Pixels of blank space between wrapped lines in a paragraph.
*/
g_object_class_install_property (gobject_class,
PROP_PIXELS_INSIDE_WRAP,
g_param_spec_int ("pixels-inside-wrap", NULL, NULL,
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextview:editable: (attributes org.gtk.Property.get=gtk_text_view_get_editable org.gtk.Property.set=gtk_text_view_set_editable)
*
* Whether the text can be modified by the user.
*/
g_object_class_install_property (gobject_class,
PROP_EDITABLE,
g_param_spec_boolean ("editable", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextview:wrap-mode: (attributes org.gtk.Property.get=gtk_text_view_get_wrap_mode org.gtk.Property.set=gtk_text_view_set_wrap_mode)
*
* Whether to wrap lines never, at word boundaries, or at character boundaries.
*/
g_object_class_install_property (gobject_class,
PROP_WRAP_MODE,
g_param_spec_enum ("wrap-mode", NULL, NULL,
GTK_TYPE_WRAP_MODE,
GTK_WRAP_NONE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextview:justification: (attributes org.gtk.Property.get=gtk_text_view_get_justification org.gtk.Property.set=gtk_text_view_set_justification)
*
* Left, right, or center justification.
*/
g_object_class_install_property (gobject_class,
PROP_JUSTIFICATION,
g_param_spec_enum ("justification", NULL, NULL,
GTK_TYPE_JUSTIFICATION,
GTK_JUSTIFY_LEFT,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:left-margin: (attributes org.gtk.Property.get=gtk_text_view_get_left_margin org.gtk.Property.set=gtk_text_view_set_left_margin)
*
* The default left margin for text in the text view.
*
* Tags in the buffer may override the default.
*
* Note that this property is confusingly named. In CSS terms,
* the value set here is padding, and it is applied in addition
* to the padding from the theme.
*/
g_object_class_install_property (gobject_class,
PROP_LEFT_MARGIN,
g_param_spec_int ("left-margin", NULL, NULL,
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:right-margin: (attributes org.gtk.Property.get=gtk_text_view_get_right_margin org.gtk.Property.set=gtk_text_view_set_right_margin)
*
* The default right margin for text in the text view.
*
* Tags in the buffer may override the default.
*
* Note that this property is confusingly named. In CSS terms,
* the value set here is padding, and it is applied in addition
* to the padding from the theme.
*/
g_object_class_install_property (gobject_class,
PROP_RIGHT_MARGIN,
g_param_spec_int ("right-margin", NULL, NULL,
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:top-margin: (attributes org.gtk.Property.get=gtk_text_view_get_top_margin org.gtk.Property.set=gtk_text_view_set_top_margin)
*
* The top margin for text in the text view.
*
* Note that this property is confusingly named. In CSS terms,
* the value set here is padding, and it is applied in addition
* to the padding from the theme.
*
* Don't confuse this property with [property@Gtk.Widget:margin-top].
*/
g_object_class_install_property (gobject_class,
PROP_TOP_MARGIN,
g_param_spec_int ("top-margin", NULL, NULL,
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:bottom-margin: (attributes org.gtk.Property.get=gtk_text_view_get_bottom_margin org.gtk.Property.set=gtk_text_view_set_bottom_margin)
*
* The bottom margin for text in the text view.
*
* Note that this property is confusingly named. In CSS terms,
* the value set here is padding, and it is applied in addition
* to the padding from the theme.
*
* Don't confuse this property with [property@Gtk.Widget:margin-bottom].
*/
g_object_class_install_property (gobject_class,
PROP_BOTTOM_MARGIN,
g_param_spec_int ("bottom-margin", NULL, NULL,
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:indent: (attributes org.gtk.Property.get=gtk_text_view_get_indent org.gtk.Property.set=gtk_text_view_set_indent)
*
* Amount to indent the paragraph, in pixels.
*/
g_object_class_install_property (gobject_class,
PROP_INDENT,
g_param_spec_int ("indent", NULL, NULL,
G_MININT, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextview:tabs: (attributes org.gtk.Property.get=gtk_text_view_get_tabs org.gtk.Property.set=gtk_text_view_set_tabs)
*
* Custom tabs for this text.
*/
g_object_class_install_property (gobject_class,
PROP_TABS,
g_param_spec_boxed ("tabs", NULL, NULL,
PANGO_TYPE_TAB_ARRAY,
GTK_PARAM_READWRITE));
/**
* GtkTextView:cursor-visible: (attributes org.gtk.Property.get=gtk_text_view_get_cursor_visible org.gtk.Property.set=gtk_text_view_set_cursor_visible)
*
* If the insertion cursor is shown.
*/
g_object_class_install_property (gobject_class,
PROP_CURSOR_VISIBLE,
g_param_spec_boolean ("cursor-visible", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:buffer: (attributes org.gtk.Property.get=gtk_text_view_get_buffer org.gtk.Property.set=gtk_text_view_set_buffer)
*
* The buffer which is displayed.
*/
g_object_class_install_property (gobject_class,
PROP_BUFFER,
g_param_spec_object ("buffer", NULL, NULL,
GTK_TYPE_TEXT_BUFFER,
GTK_PARAM_READWRITE));
/**
* GtkTextView:overwrite: (attributes org.gtk.Property.get=gtk_text_view_get_overwrite org.gtk.Property.set=gtk_text_view_set_overwrite)
*
* Whether entered text overwrites existing contents.
*/
g_object_class_install_property (gobject_class,
PROP_OVERWRITE,
g_param_spec_boolean ("overwrite", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:accepts-tab: (attributes org.gtk.Property.get=gtk_text_view_get_accepts_tab org.gtk.Property.set=gtk_text_view_set_accepts_tab)
*
* Whether Tab will result in a tab character being entered.
*/
g_object_class_install_property (gobject_class,
PROP_ACCEPTS_TAB,
g_param_spec_boolean ("accepts-tab", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:im-module:
*
* Which IM (input method) module should be used for this text_view.
*
* See [class@Gtk.IMMulticontext].
*
* Setting this to a non-%NULL value overrides the system-wide IM module
* setting. See the GtkSettings [property@Gtk.Settings:gtk-im-module] property.
*/
g_object_class_install_property (gobject_class,
PROP_IM_MODULE,
g_param_spec_string ("im-module", NULL, NULL,
NULL,
GTK_PARAM_READWRITE));
/**
* GtkTextView:input-purpose: (attributes org.gtk.Property.get=gtk_text_view_get_input_purpose org.gtk.Property.set=gtk_text_view_set_input_purpose)
*
* The purpose of this text field.
*
* This property can be used by on-screen keyboards and other input
* methods to adjust their behaviour.
*/
g_object_class_install_property (gobject_class,
PROP_INPUT_PURPOSE,
g_param_spec_enum ("input-purpose", NULL, NULL,
GTK_TYPE_INPUT_PURPOSE,
GTK_INPUT_PURPOSE_FREE_FORM,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:input-hints: (attributes org.gtk.Property.get=gtk_text_view_get_input_hints org.gtk.Property.set=gtk_text_view_set_input_hints)
*
* Additional hints (beyond [property@Gtk.TextView:input-purpose])
* that allow input methods to fine-tune their behaviour.
*/
g_object_class_install_property (gobject_class,
PROP_INPUT_HINTS,
g_param_spec_flags ("input-hints", NULL, NULL,
GTK_TYPE_INPUT_HINTS,
GTK_INPUT_HINT_NONE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:monospace: (attributes org.gtk.Property.get=gtk_text_view_get_monospace org.gtk.Property.set=gtk_text_view_set_monospace)
*
* Whether text should be displayed in a monospace font.
*
* If %TRUE, set the .monospace style class on the
* text view to indicate that a monospace font is desired.
*/
g_object_class_install_property (gobject_class,
PROP_MONOSPACE,
g_param_spec_boolean ("monospace", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:extra-menu: (attributes org.gtk.Property.get=gtk_text_view_get_extra_menu org.gtk.Property.set=gtk_text_view_set_extra_menu)
*
* A menu model whose contents will be appended to the context menu.
*/
g_object_class_install_property (gobject_class,
PROP_EXTRA_MENU,
g_param_spec_object ("extra-menu", NULL, NULL,
G_TYPE_MENU_MODEL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/* GtkScrollable interface */
g_object_class_override_property (gobject_class, PROP_HADJUSTMENT, "hadjustment");
g_object_class_override_property (gobject_class, PROP_VADJUSTMENT, "vadjustment");
g_object_class_override_property (gobject_class, PROP_HSCROLL_POLICY, "hscroll-policy");
g_object_class_override_property (gobject_class, PROP_VSCROLL_POLICY, "vscroll-policy");
/*
* Signals
*/
/**
* GtkTextView::move-cursor:
* @text_view: the object which received the signal
* @step: the granularity of the move, as a `GtkMovementStep`
* @count: the number of @step units to move
* @extend_selection: %TRUE if the move should extend the selection
*
* Gets emitted when the user initiates a cursor movement.
*
* The ::move-cursor signal is a [keybinding signal](class.SignalAction.html).
* If the cursor is not visible in @text_view, this signal causes
* the viewport to be moved instead.
*
* Applications should not connect to it, but may emit it with
* g_signal_emit_by_name() if they need to control the cursor
* programmatically.
*
*
* The default bindings for this signal come in two variants,
* the variant with the <kbd>Shift</kbd> modifier extends the
* selection, the variant without it does not.
* There are too many key combinations to list them all here.
*
* - <kbd>←</kbd>, <kbd>→</kbd>, <kbd>↑</kbd>, <kbd>↓</kbd>
* move by individual characters/lines
* - <kbd>Ctrl</kbd>-<kbd>→</kbd>, etc. move by words/paragraphs
* - <kbd>Home</kbd>, <kbd>End</kbd> move to the ends of the buffer
* - <kbd>PgUp</kbd>, <kbd>PgDn</kbd> move vertically by pages
* - <kbd>Ctrl</kbd>-<kbd>PgUp</kbd>, <kbd>Ctrl</kbd>-<kbd>PgDn</kbd>
* move horizontally by pages
*/
signals[MOVE_CURSOR] =
g_signal_new (I_("move-cursor"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkTextViewClass, move_cursor),
NULL, NULL,
_gtk_marshal_VOID__ENUM_INT_BOOLEAN,
G_TYPE_NONE, 3,
GTK_TYPE_MOVEMENT_STEP,
G_TYPE_INT,
G_TYPE_BOOLEAN);
g_signal_set_va_marshaller (signals[MOVE_CURSOR],
G_OBJECT_CLASS_TYPE (gobject_class),
_gtk_marshal_VOID__ENUM_INT_BOOLEANv);
/**
* GtkTextView::move-viewport:
* @text_view: the object which received the signal
* @step: the granularity of the movement, as a `GtkScrollStep`
* @count: the number of @step units to move
*
* Gets emitted to move the viewport.
*
* The ::move-viewport signal is a [keybinding signal](class.SignalAction.html),
* which can be bound to key combinations to allow the user to move the viewport,
* i.e. change what part of the text view is visible in a containing scrolled
* window.
*
* There are no default bindings for this signal.
*/
signals[MOVE_VIEWPORT] =
g_signal_new_class_handler (I_("move-viewport"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_text_view_move_viewport),
NULL, NULL,
_gtk_marshal_VOID__ENUM_INT,
G_TYPE_NONE, 2,
GTK_TYPE_SCROLL_STEP,
G_TYPE_INT);
g_signal_set_va_marshaller (signals[MOVE_VIEWPORT],
G_OBJECT_CLASS_TYPE (gobject_class),
_gtk_marshal_VOID__ENUM_INTv);
/**
* GtkTextView::set-anchor:
* @text_view: the object which received the signal
*
* Gets emitted when the user initiates settings the "anchor" mark.
*
* The ::set-anchor signal is a [keybinding signal](class.SignalAction.html)
* which gets emitted when the user initiates setting the "anchor"
* mark. The "anchor" mark gets placed at the same position as the
* "insert" mark.
*
* This signal has no default bindings.
*/
signals[SET_ANCHOR] =
g_signal_new (I_("set-anchor"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkTextViewClass, set_anchor),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkTextView::insert-at-cursor:
* @text_view: the object which received the signal
* @string: the string to insert
*
* Gets emitted when the user initiates the insertion of a
* fixed string at the cursor.
*
* The ::insert-at-cursor signal is a [keybinding signal](class.SignalAction.html).
*
* This signal has no default bindings.
*/
signals[INSERT_AT_CURSOR] =
g_signal_new (I_("insert-at-cursor"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkTextViewClass, insert_at_cursor),
NULL, NULL,
NULL,
G_TYPE_NONE, 1,
G_TYPE_STRING);
/**
* GtkTextView::delete-from-cursor:
* @text_view: the object which received the signal
* @type: the granularity of the deletion, as a `GtkDeleteType`
* @count: the number of @type units to delete
*
* Gets emitted when the user initiates a text deletion.
*
* The ::delete-from-cursor signal is a [keybinding signal](class.SignalAction.html).
*
* If the @type is %GTK_DELETE_CHARS, GTK deletes the selection
* if there is one, otherwise it deletes the requested number
* of characters.
*
* The default bindings for this signal are <kbd>Delete</kbd> for
* deleting a character, <kbd>Ctrl</kbd>-<kbd>Delete</kbd> for
* deleting a word and <kbd>Ctrl</kbd>-<kbd>Backspace</kbd> for
* deleting a word backwards.
*/
signals[DELETE_FROM_CURSOR] =
g_signal_new (I_("delete-from-cursor"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkTextViewClass, delete_from_cursor),
NULL, NULL,
_gtk_marshal_VOID__ENUM_INT,
G_TYPE_NONE, 2,
GTK_TYPE_DELETE_TYPE,
G_TYPE_INT);
g_signal_set_va_marshaller (signals[DELETE_FROM_CURSOR],
G_OBJECT_CLASS_TYPE (gobject_class),
_gtk_marshal_VOID__ENUM_INTv);
/**
* GtkTextView::backspace:
* @text_view: the object which received the signal
*
* Gets emitted when the user asks for it.
*
* The ::backspace signal is a [keybinding signal](class.SignalAction.html).
*
* The default bindings for this signal are
* <kbd>Backspace</kbd> and <kbd>Shift</kbd>-<kbd>Backspace</kbd>.
*/
signals[BACKSPACE] =
g_signal_new (I_("backspace"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkTextViewClass, backspace),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkTextView::cut-clipboard:
* @text_view: the object which received the signal
*
* Gets emitted to cut the selection to the clipboard.
*
* The ::cut-clipboard signal is a [keybinding signal](class.SignalAction.html).
*
* The default bindings for this signal are
* <kbd>Ctrl</kbd>-<kbd>x</kbd> and
* <kbd>Shift</kbd>-<kbd>Delete</kbd>.
*/
signals[CUT_CLIPBOARD] =
g_signal_new (I_("cut-clipboard"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkTextViewClass, cut_clipboard),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkTextView::copy-clipboard:
* @text_view: the object which received the signal
*
* Gets emitted to copy the selection to the clipboard.
*
* The ::copy-clipboard signal is a [keybinding signal](class.SignalAction.html).
*
* The default bindings for this signal are
* <kbd>Ctrl</kbd>-<kbd>c</kbd> and
* <kbd>Ctrl</kbd>-<kbd>Insert</kbd>.
*/
signals[COPY_CLIPBOARD] =
g_signal_new (I_("copy-clipboard"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkTextViewClass, copy_clipboard),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkTextView::paste-clipboard:
* @text_view: the object which received the signal
*
* Gets emitted to paste the contents of the clipboard
* into the text view.
*
* The ::paste-clipboard signal is a [keybinding signal](class.SignalAction.html).
*
* The default bindings for this signal are
* <kbd>Ctrl</kbd>-<kbd>v</kbd> and
* <kbd>Shift</kbd>-<kbd>Insert</kbd>.
*/
signals[PASTE_CLIPBOARD] =
g_signal_new (I_("paste-clipboard"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkTextViewClass, paste_clipboard),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkTextView::toggle-overwrite:
* @text_view: the object which received the signal
*
* Gets emitted to toggle the overwrite mode of the text view.
*
* The ::toggle-overwrite signal is a [keybinding signal](class.SignalAction.html).
*
* The default binding for this signal is <kbd>Insert</kbd>.
*/
signals[TOGGLE_OVERWRITE] =
g_signal_new (I_("toggle-overwrite"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkTextViewClass, toggle_overwrite),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkTextView::select-all:
* @text_view: the object which received the signal
* @select: %TRUE to select, %FALSE to unselect
*
* Gets emitted to select or unselect the complete contents of the text view.
*
* The ::select-all signal is a [keybinding signal](class.SignalAction.html).
*
* The default bindings for this signal are
* <kbd>Ctrl</kbd>-<kbd>a</kbd> and
* <kbd>Ctrl</kbd>-<kbd>/</kbd> for selecting and
* <kbd>Shift</kbd>-<kbd>Ctrl</kbd>-<kbd>a</kbd> and
* <kbd>Ctrl</kbd>-<kbd>\</kbd> for unselecting.
*/
signals[SELECT_ALL] =
g_signal_new_class_handler (I_("select-all"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_text_view_select_all),
NULL, NULL,
NULL,
G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
/**
* GtkTextView::toggle-cursor-visible:
* @text_view: the object which received the signal
*
* Gets emitted to toggle the `cursor-visible` property.
*
* The ::toggle-cursor-visible signal is a
* [keybinding signal](class.SignalAction.html).
*
* The default binding for this signal is <kbd>F7</kbd>.
*/
signals[TOGGLE_CURSOR_VISIBLE] =
g_signal_new_class_handler (I_("toggle-cursor-visible"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_text_view_toggle_cursor_visible),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkTextView::preedit-changed:
* @text_view: the object which received the signal
* @preedit: the current preedit string
*
* Emitted when preedit text of the active IM changes.
*
* If an input method is used, the typed text will not immediately
* be committed to the buffer. So if you are interested in the text,
* connect to this signal.
*
* This signal is only emitted if the text at the given position
* is actually editable.
*/
signals[PREEDIT_CHANGED] =
g_signal_new_class_handler (I_("preedit-changed"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
NULL,
NULL, NULL,
NULL,
G_TYPE_NONE, 1,
G_TYPE_STRING);
/**
* GtkTextView::extend-selection:
* @text_view: the object which received the signal
* @granularity: the granularity type
* @location: the location where to extend the selection
* @start: where the selection should start
* @end: where the selection should end
*
* Emitted when the selection needs to be extended at @location.
*
* Returns: %GDK_EVENT_STOP to stop other handlers from being invoked for the
* event. %GDK_EVENT_PROPAGATE to propagate the event further.
*/
signals[EXTEND_SELECTION] =
g_signal_new (I_("extend-selection"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTextViewClass, extend_selection),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__ENUM_BOXED_BOXED_BOXED,
G_TYPE_BOOLEAN, 4,
GTK_TYPE_TEXT_EXTEND_SELECTION,
GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE);
g_signal_set_va_marshaller (signals[EXTEND_SELECTION],
G_TYPE_FROM_CLASS (klass),
_gtk_marshal_BOOLEAN__ENUM_BOXED_BOXED_BOXEDv);
/**
* GtkTextView::insert-emoji:
* @text_view: the object which received the signal
*
* Gets emitted to present the Emoji chooser for the @text_view.
*
* The ::insert-emoji signal is a [keybinding signal](class.SignalAction.html).
*
* The default bindings for this signal are
* <kbd>Ctrl</kbd>-<kbd>.</kbd> and
* <kbd>Ctrl</kbd>-<kbd>;</kbd>
*/
signals[INSERT_EMOJI] =
g_signal_new (I_("insert-emoji"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkTextViewClass, insert_emoji),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/*
* Actions
*/
/**
* GtkTextView|clipboard.cut:
*
* Copies the contents to the clipboard and deletes it from the widget.
*/
gtk_widget_class_install_action (widget_class, "clipboard.cut", NULL,
gtk_text_view_activate_clipboard_cut);
/**
* GtkTextView|clipboard.copy:
*
* Copies the contents to the clipboard.
*/
gtk_widget_class_install_action (widget_class, "clipboard.copy", NULL,
gtk_text_view_activate_clipboard_copy);
/**
* GtkTextView|clipboard.paste:
*
* Inserts the contents of the clipboard into the widget.
*/
gtk_widget_class_install_action (widget_class, "clipboard.paste", NULL,
gtk_text_view_activate_clipboard_paste);
/**
* GtkTextView|selection.delete:
*
* Deletes the current selection.
*/
gtk_widget_class_install_action (widget_class, "selection.delete", NULL,
gtk_text_view_activate_selection_delete);
/**
* GtkTextView|selection.select-all:
*
* Selects all of the widgets content.
*/
gtk_widget_class_install_action (widget_class, "selection.select-all", NULL,
gtk_text_view_activate_selection_select_all);
/**
* GtkTextView|misc.insert-emoji:
*
* Opens the Emoji chooser.
*/
gtk_widget_class_install_action (widget_class, "misc.insert-emoji", NULL,
gtk_text_view_activate_misc_insert_emoji);
/**
* GtkTextView|text.undo:
*
* Undoes the last change to the contents.
*/
gtk_widget_class_install_action (widget_class, "text.undo", NULL, gtk_text_view_real_undo);
/**
* GtkTextView|text.redo:
*
* Redoes the last change to the contents.
*/
gtk_widget_class_install_action (widget_class, "text.redo", NULL, gtk_text_view_real_redo);
/**
* GtkTextView|menu.popup:
*
* Opens the context menu.
*/
gtk_widget_class_install_action (widget_class, "menu.popup", NULL, gtk_text_view_popup_menu);
/*
* Key bindings
*/
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_F10, GDK_SHIFT_MASK,
"menu.popup",
NULL);
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_Menu, 0,
"menu.popup",
NULL);
/* Moving the insertion point */
add_move_binding (widget_class, GDK_KEY_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
add_move_binding (widget_class, GDK_KEY_KP_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
add_move_binding (widget_class, GDK_KEY_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
add_move_binding (widget_class, GDK_KEY_KP_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
add_move_binding (widget_class, GDK_KEY_Right, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (widget_class, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (widget_class, GDK_KEY_Left, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, -1);
add_move_binding (widget_class, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, -1);
add_move_binding (widget_class, GDK_KEY_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (widget_class, GDK_KEY_KP_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (widget_class, GDK_KEY_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
add_move_binding (widget_class, GDK_KEY_KP_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
add_move_binding (widget_class, GDK_KEY_Up, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, -1);
add_move_binding (widget_class, GDK_KEY_KP_Up, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, -1);
add_move_binding (widget_class, GDK_KEY_Down, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, 1);
add_move_binding (widget_class, GDK_KEY_KP_Down, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, 1);
add_move_binding (widget_class, GDK_KEY_Home, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
add_move_binding (widget_class, GDK_KEY_KP_Home, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
add_move_binding (widget_class, GDK_KEY_End, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
add_move_binding (widget_class, GDK_KEY_KP_End, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
add_move_binding (widget_class, GDK_KEY_Home, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (widget_class, GDK_KEY_KP_Home, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (widget_class, GDK_KEY_End, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (widget_class, GDK_KEY_KP_End, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (widget_class, GDK_KEY_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
add_move_binding (widget_class, GDK_KEY_KP_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
add_move_binding (widget_class, GDK_KEY_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
add_move_binding (widget_class, GDK_KEY_KP_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
add_move_binding (widget_class, GDK_KEY_Page_Up, GDK_CONTROL_MASK,
GTK_MOVEMENT_HORIZONTAL_PAGES, -1);
add_move_binding (widget_class, GDK_KEY_KP_Page_Up, GDK_CONTROL_MASK,
GTK_MOVEMENT_HORIZONTAL_PAGES, -1);
add_move_binding (widget_class, GDK_KEY_Page_Down, GDK_CONTROL_MASK,
GTK_MOVEMENT_HORIZONTAL_PAGES, 1);
add_move_binding (widget_class, GDK_KEY_KP_Page_Down, GDK_CONTROL_MASK,
GTK_MOVEMENT_HORIZONTAL_PAGES, 1);
/* Select all */
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_a, GDK_CONTROL_MASK,
"select-all",
"(b)", TRUE);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_slash, GDK_CONTROL_MASK,
"select-all",
"(b)", TRUE);
/* Unselect all */
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_backslash, GDK_CONTROL_MASK,
"select-all",
"(b)", FALSE);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_a, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"select-all",
"(b)", FALSE);
/* Deleting text */
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Delete, 0,
"delete-from-cursor",
"(ii)", GTK_DELETE_CHARS, 1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Delete, 0,
"delete-from-cursor",
"(ii)", GTK_DELETE_CHARS, 1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_BackSpace, 0,
"backspace",
NULL);
/* Make this do the same as Backspace, to help with mis-typing */
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_BackSpace, GDK_SHIFT_MASK,
"backspace",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Delete, GDK_CONTROL_MASK,
"delete-from-cursor",
"(ii)", GTK_DELETE_WORD_ENDS, 1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Delete, GDK_CONTROL_MASK,
"delete-from-cursor",
"(ii)", GTK_DELETE_WORD_ENDS, 1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_BackSpace, GDK_CONTROL_MASK,
"delete-from-cursor",
"(ii)", GTK_DELETE_WORD_ENDS, -1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Delete, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"delete-from-cursor",
"(ii)", GTK_DELETE_PARAGRAPH_ENDS, 1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Delete, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"delete-from-cursor",
"(ii)", GTK_DELETE_PARAGRAPH_ENDS, 1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_BackSpace, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"delete-from-cursor",
"(ii)", GTK_DELETE_PARAGRAPH_ENDS, -1);
/* Cut/copy/paste */
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_x, GDK_CONTROL_MASK,
"cut-clipboard",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_c, GDK_CONTROL_MASK,
"copy-clipboard",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_v, GDK_CONTROL_MASK,
"paste-clipboard",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Delete, GDK_SHIFT_MASK,
"cut-clipboard",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Insert, GDK_CONTROL_MASK,
"copy-clipboard",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Insert, GDK_SHIFT_MASK,
"paste-clipboard",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Delete, GDK_SHIFT_MASK,
"cut-clipboard",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Insert, GDK_CONTROL_MASK,
"copy-clipboard",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Insert, GDK_SHIFT_MASK,
"paste-clipboard",
NULL);
/* Undo/Redo */
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_z, GDK_CONTROL_MASK,
"text.undo", NULL);
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_y, GDK_CONTROL_MASK,
"text.redo", NULL);
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_z, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
"text.redo", NULL);
/* Overwrite */
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Insert, 0,
"toggle-overwrite",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Insert, 0,
"toggle-overwrite",
NULL);
/* Emoji */
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_period, GDK_CONTROL_MASK,
"misc.insert-emoji",
NULL);
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_semicolon, GDK_CONTROL_MASK,
"misc.insert-emoji",
NULL);
/* Caret mode */
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_F7, 0,
"toggle-cursor-visible",
NULL);
/* Control-tab focus motion */
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Tab, GDK_CONTROL_MASK,
"move-focus",
"(i)", GTK_DIR_TAB_FORWARD);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Tab, GDK_CONTROL_MASK,
"move-focus",
"(i)", GTK_DIR_TAB_FORWARD);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Tab, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"move-focus",
"(i)", GTK_DIR_TAB_BACKWARD);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Tab, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"move-focus",
"(i)", GTK_DIR_TAB_BACKWARD);
gtk_widget_class_set_css_name (widget_class, I_("textview"));
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_TEXT_BOX);
quark_text_selection_data = g_quark_from_static_string ("gtk-text-view-text-selection-data");
quark_gtk_signal = g_quark_from_static_string ("gtk-signal");
quark_text_view_child = g_quark_from_static_string ("gtk-text-view-child");
}
static void
_gtk_text_view_ensure_text_handles (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
int i;
for (i = 0; i < TEXT_HANDLE_N_HANDLES; i++)
{
if (priv->text_handles[i])
continue;
priv->text_handles[i] = gtk_text_handle_new (GTK_WIDGET (text_view));
g_signal_connect (priv->text_handles[i], "drag-started",
G_CALLBACK (gtk_text_view_handle_drag_started), text_view);
g_signal_connect (priv->text_handles[i], "handle-dragged",
G_CALLBACK (gtk_text_view_handle_dragged), text_view);
g_signal_connect (priv->text_handles[i], "drag-finished",
G_CALLBACK (gtk_text_view_handle_drag_finished), text_view);
}
}
static void
gtk_text_view_init (GtkTextView *text_view)
{
GtkWidget *widget = GTK_WIDGET (text_view);
GtkDropTarget *dest;
GtkTextViewPrivate *priv;
GtkEventController *controller;
GtkGesture *gesture;
text_view->priv = gtk_text_view_get_instance_private (text_view);
priv = text_view->priv;
gtk_widget_set_focusable (widget, TRUE);
gtk_widget_set_overflow (widget, GTK_OVERFLOW_HIDDEN);
gtk_widget_add_css_class (widget, "view");
gtk_widget_set_cursor_from_name (widget, "text");
/* Set up default style */
priv->wrap_mode = GTK_WRAP_NONE;
priv->pixels_above_lines = 0;
priv->pixels_below_lines = 0;
priv->pixels_inside_wrap = 0;
priv->justify = GTK_JUSTIFY_LEFT;
priv->indent = 0;
priv->tabs = NULL;
priv->editable = TRUE;
priv->cursor_alpha = 1.0;
priv->scroll_after_paste = FALSE;
dest = gtk_drop_target_new (G_TYPE_STRING, GDK_ACTION_COPY | GDK_ACTION_MOVE);
g_signal_connect (dest, "enter", G_CALLBACK (gtk_text_view_drag_motion), text_view);
g_signal_connect (dest, "motion", G_CALLBACK (gtk_text_view_drag_motion), text_view);
g_signal_connect (dest, "leave", G_CALLBACK (gtk_text_view_drag_leave), text_view);
g_signal_connect (dest, "drop", G_CALLBACK (gtk_text_view_drag_drop), text_view);
gtk_widget_add_controller (GTK_WIDGET (text_view), GTK_EVENT_CONTROLLER (dest));
controller = gtk_drop_controller_motion_new ();
g_signal_connect (controller, "enter", G_CALLBACK (gtk_text_view_drop_scroll_motion), text_view);
g_signal_connect (controller, "motion", G_CALLBACK (gtk_text_view_drop_scroll_motion), text_view);
g_signal_connect (controller, "leave", G_CALLBACK (gtk_text_view_drop_scroll_leave), text_view);
gtk_widget_add_controller (GTK_WIDGET (text_view), controller);
priv->virtual_cursor_x = -1;
priv->virtual_cursor_y = -1;
/* This object is completely private. No external entity can gain a reference
* to it; so we create it here and destroy it in finalize ().
*/
priv->im_context = gtk_im_multicontext_new ();
g_signal_connect (priv->im_context, "commit",
G_CALLBACK (gtk_text_view_commit_handler), text_view);
g_signal_connect (priv->im_context, "preedit-start",
G_CALLBACK (gtk_text_view_preedit_start_handler), text_view);
g_signal_connect (priv->im_context, "preedit-changed",
G_CALLBACK (gtk_text_view_preedit_changed_handler), text_view);
g_signal_connect (priv->im_context, "retrieve-surrounding",
G_CALLBACK (gtk_text_view_retrieve_surrounding_handler), text_view);
g_signal_connect (priv->im_context, "delete-surrounding",
G_CALLBACK (gtk_text_view_delete_surrounding_handler), text_view);
priv->cursor_visible = TRUE;
priv->accepts_tab = TRUE;
priv->text_window = text_window_new (widget);
gesture = gtk_gesture_click_new ();
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), 0);
g_signal_connect (gesture, "pressed",
G_CALLBACK (gtk_text_view_click_gesture_pressed),
widget);
gtk_widget_add_controller (widget, GTK_EVENT_CONTROLLER (gesture));
priv->drag_gesture = gtk_gesture_drag_new ();
g_signal_connect (priv->drag_gesture, "drag-update",
G_CALLBACK (gtk_text_view_drag_gesture_update),
widget);
g_signal_connect (priv->drag_gesture, "drag-end",
G_CALLBACK (gtk_text_view_drag_gesture_end),
widget);
gtk_widget_add_controller (widget, GTK_EVENT_CONTROLLER (priv->drag_gesture));
controller = gtk_event_controller_motion_new ();
g_signal_connect (controller, "motion", G_CALLBACK (gtk_text_view_motion), widget);
gtk_widget_add_controller (widget, controller);
priv->key_controller = gtk_event_controller_key_new ();
g_signal_connect (priv->key_controller, "key-pressed",
G_CALLBACK (gtk_text_view_key_controller_key_pressed),
widget);
g_signal_connect (priv->key_controller, "im-update",
G_CALLBACK (gtk_text_view_key_controller_im_update),
widget);
gtk_event_controller_key_set_im_context (GTK_EVENT_CONTROLLER_KEY (priv->key_controller),
priv->im_context);
gtk_widget_add_controller (widget, priv->key_controller);
controller = gtk_event_controller_focus_new ();
g_signal_connect_swapped (controller, "enter",
G_CALLBACK (gtk_text_view_focus_in), widget);
g_signal_connect_swapped (controller, "leave",
G_CALLBACK (gtk_text_view_focus_out), widget);
gtk_widget_add_controller (widget, controller);
priv->selection_node = gtk_css_node_new ();
gtk_css_node_set_name (priv->selection_node, g_quark_from_static_string ("selection"));
gtk_css_node_set_parent (priv->selection_node, priv->text_window->css_node);
gtk_css_node_set_state (priv->selection_node,
gtk_css_node_get_state (priv->text_window->css_node) & ~GTK_STATE_FLAG_DROP_ACTIVE);
gtk_css_node_set_visible (priv->selection_node, FALSE);
g_object_unref (priv->selection_node);
gtk_widget_action_set_enabled (GTK_WIDGET (text_view), "text.can-redo", FALSE);
gtk_widget_action_set_enabled (GTK_WIDGET (text_view), "text.can-undo", FALSE);
gtk_accessible_update_property (GTK_ACCESSIBLE (widget),
GTK_ACCESSIBLE_PROPERTY_MULTI_LINE, TRUE,
-1);
}
GtkCssNode *
gtk_text_view_get_text_node (GtkTextView *text_view)
{
return text_view->priv->text_window->css_node;
}
GtkCssNode *
gtk_text_view_get_selection_node (GtkTextView *text_view)
{
return text_view->priv->selection_node;
}
static void
_gtk_text_view_ensure_magnifier (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (priv->magnifier_popover)
return;
priv->magnifier = _gtk_magnifier_new (GTK_WIDGET (text_view));
_gtk_magnifier_set_magnification (GTK_MAGNIFIER (priv->magnifier), 2.0);
priv->magnifier_popover = gtk_popover_new ();
gtk_popover_set_position (GTK_POPOVER (priv->magnifier_popover), GTK_POS_TOP);
gtk_widget_set_parent (priv->magnifier_popover, GTK_WIDGET (text_view));
gtk_widget_add_css_class (priv->magnifier_popover, "magnifier");
gtk_popover_set_autohide (GTK_POPOVER (priv->magnifier_popover), FALSE);
gtk_popover_set_child (GTK_POPOVER (priv->magnifier_popover), priv->magnifier);
gtk_widget_show (priv->magnifier);
}
/**
* gtk_text_view_new:
*
* Creates a new `GtkTextView`.
*
* If you don’t call [method@Gtk.TextView.set_buffer] before using the
* text view, an empty default buffer will be created for you. Get the
* buffer with [method@Gtk.TextView.get_buffer]. If you want to specify
* your own buffer, consider [ctor@Gtk.TextView.new_with_buffer].
*
* Returns: a new `GtkTextView`
*/
GtkWidget*
gtk_text_view_new (void)
{
return g_object_new (GTK_TYPE_TEXT_VIEW, NULL);
}
/**
* gtk_text_view_new_with_buffer:
* @buffer: a `GtkTextBuffer`
*
* Creates a new `GtkTextView` widget displaying the buffer @buffer.
*
* One buffer can be shared among many widgets. @buffer may be %NULL
* to create a default buffer, in which case this function is equivalent
* to [ctor@Gtk.TextView.new]. The text view adds its own reference count
* to the buffer; it does not take over an existing reference.
*
* Returns: a new `GtkTextView`.
*/
GtkWidget*
gtk_text_view_new_with_buffer (GtkTextBuffer *buffer)
{
GtkTextView *text_view;
text_view = (GtkTextView*)gtk_text_view_new ();
gtk_text_view_set_buffer (text_view, buffer);
return GTK_WIDGET (text_view);
}
/**
* gtk_text_view_set_buffer: (attributes org.gtk.Method.set_property=buffer)
* @text_view: a `GtkTextView`
* @buffer: (nullable): a `GtkTextBuffer`
*
* Sets @buffer as the buffer being displayed by @text_view.
*
* The previous buffer displayed by the text view is unreferenced, and
* a reference is added to @buffer. If you owned a reference to @buffer
* before passing it to this function, you must remove that reference
* yourself; `GtkTextView` will not “adopt” it.
*/
void
gtk_text_view_set_buffer (GtkTextView *text_view,
GtkTextBuffer *buffer)
{
GtkTextViewPrivate *priv;
GtkTextBuffer *old_buffer;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (buffer == NULL || GTK_IS_TEXT_BUFFER (buffer));
priv = text_view->priv;
if (priv->buffer == buffer)
return;
old_buffer = priv->buffer;
if (old_buffer != NULL)
{
while (priv->anchored_children.length)
{
AnchoredChild *ac = g_queue_peek_head (&priv->anchored_children);
gtk_text_view_remove (text_view, ac->widget);
/* ac is now invalid! */
}
g_signal_handlers_disconnect_by_func (priv->buffer,
gtk_text_view_mark_set_handler,
text_view);
g_signal_handlers_disconnect_by_func (priv->buffer,
gtk_text_view_paste_done_handler,
text_view);
g_signal_handlers_disconnect_by_func (priv->buffer,
gtk_text_view_buffer_changed_handler,
text_view);
g_signal_handlers_disconnect_by_func (priv->buffer,
gtk_text_view_buffer_notify_redo,
text_view);
g_signal_handlers_disconnect_by_func (priv->buffer,
gtk_text_view_buffer_notify_undo,
text_view);
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
{
GdkClipboard *clipboard = gtk_widget_get_primary_clipboard (GTK_WIDGET (text_view));
gtk_text_buffer_remove_selection_clipboard (priv->buffer, clipboard);
}
if (priv->layout)
gtk_text_layout_set_buffer (priv->layout, NULL);
priv->dnd_mark = NULL;
priv->first_para_mark = NULL;
cancel_pending_scroll (text_view);
}
priv->buffer = buffer;
if (priv->layout)
gtk_text_layout_set_buffer (priv->layout, buffer);
if (buffer != NULL)
{
GtkTextIter start;
gboolean can_undo = FALSE;
gboolean can_redo = FALSE;
g_object_ref (buffer);
gtk_text_buffer_get_iter_at_offset (priv->buffer, &start, 0);
priv->dnd_mark = gtk_text_buffer_create_mark (priv->buffer,
"gtk_drag_target",
&start, FALSE);
priv->first_para_mark = gtk_text_buffer_create_mark (priv->buffer,
NULL,
&start, TRUE);
priv->first_para_pixels = 0;
g_signal_connect (priv->buffer, "mark-set",
G_CALLBACK (gtk_text_view_mark_set_handler),
text_view);
g_signal_connect (priv->buffer, "paste-done",
G_CALLBACK (gtk_text_view_paste_done_handler),
text_view);
g_signal_connect (priv->buffer, "changed",
G_CALLBACK (gtk_text_view_buffer_changed_handler),
text_view);
g_signal_connect (priv->buffer, "notify",
G_CALLBACK (gtk_text_view_buffer_notify_undo),
text_view);
g_signal_connect (priv->buffer, "notify",
G_CALLBACK (gtk_text_view_buffer_notify_redo),
text_view);
can_undo = gtk_text_buffer_get_can_undo (buffer);
can_redo = gtk_text_buffer_get_can_redo (buffer);
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
{
GdkClipboard *clipboard = gtk_widget_get_primary_clipboard (GTK_WIDGET (text_view));
gtk_text_buffer_add_selection_clipboard (priv->buffer, clipboard);
}
gtk_text_view_update_handles (text_view);
gtk_widget_action_set_enabled (GTK_WIDGET (text_view), "text.undo", can_undo);
gtk_widget_action_set_enabled (GTK_WIDGET (text_view), "text.redo", can_redo);
}
if (old_buffer)
g_object_unref (old_buffer);
g_object_notify (G_OBJECT (text_view), "buffer");
if (gtk_widget_get_visible (GTK_WIDGET (text_view)))
gtk_widget_queue_draw (GTK_WIDGET (text_view));
DV(g_print ("Invalidating due to set_buffer\n"));
gtk_text_view_invalidate (text_view);
}
static GtkTextBuffer*
gtk_text_view_create_buffer (GtkTextView *text_view)
{
return gtk_text_buffer_new (NULL);
}
/**
* gtk_text_view_get_buffer: (attributes org.gtk.Method.get_property=buffer)
* @text_view: a `GtkTextView`
*
* Returns the `GtkTextBuffer` being displayed by this text view.
*
* The reference count on the buffer is not incremented; the caller
* of this function won’t own a new reference.
*
* Returns: (transfer none): a `GtkTextBuffer`
*/
GtkTextBuffer*
gtk_text_view_get_buffer (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
return get_buffer (text_view);
}
/**
* gtk_text_view_get_cursor_locations:
* @text_view: a `GtkTextView`
* @iter: (nullable): a `GtkTextIter`
* @strong: (out) (optional): location to store the strong cursor position
* @weak: (out) (optional): location to store the weak cursor position
*
* Determine the positions of the strong and weak cursors if the
* insertion point is at @iter.
*
* The position of each cursor is stored as a zero-width rectangle.
* The strong cursor location is the location where characters of
* the directionality equal to the base direction of the paragraph
* are inserted. The weak cursor location is the location where
* characters of the directionality opposite to the base direction
* of the paragraph are inserted.
*
* If @iter is %NULL, the actual cursor position is used.
*
* Note that if @iter happens to be the actual cursor position, and
* there is currently an IM preedit sequence being entered, the
* returned locations will be adjusted to account for the preedit
* cursor’s offset within the preedit sequence.
*
* The rectangle position is in buffer coordinates; use
* [method@Gtk.TextView.buffer_to_window_coords] to convert these
* coordinates to coordinates for one of the windows in the text view.
*/
void
gtk_text_view_get_cursor_locations (GtkTextView *text_view,
const GtkTextIter *iter,
GdkRectangle *strong,
GdkRectangle *weak)
{
GtkTextIter insert;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (iter == NULL ||
gtk_text_iter_get_buffer (iter) == get_buffer (text_view));
gtk_text_view_ensure_layout (text_view);
if (iter)
insert = *iter;
else
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_insert (get_buffer (text_view)));
gtk_text_layout_get_cursor_locations (text_view->priv->layout, &insert,
strong, weak);
}
/**
* gtk_text_view_get_iter_at_location:
* @text_view: a `GtkTextView`
* @iter: (out): a `GtkTextIter`
* @x: x position, in buffer coordinates
* @y: y position, in buffer coordinates
*
* Retrieves the iterator at buffer coordinates @x and @y.
*
* Buffer coordinates are coordinates for the entire buffer, not just
* the currently-displayed portion. If you have coordinates from an
* event, you have to convert those to buffer coordinates with
* [method@Gtk.TextView.window_to_buffer_coords].
*
* Returns: %TRUE if the position is over text
*/
gboolean
gtk_text_view_get_iter_at_location (GtkTextView *text_view,
GtkTextIter *iter,
int x,
int y)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_get_iter_at_pixel (text_view->priv->layout, iter, x, y);
}
/**
* gtk_text_view_get_iter_at_position:
* @text_view: a `GtkTextView`
* @iter: (out): a `GtkTextIter`
* @trailing: (out) (optional): if non-%NULL, location to store
* an integer indicating where in the grapheme the user clicked.
* It will either be zero, or the number of characters in the grapheme.
* 0 represents the trailing edge of the grapheme.
* @x: x position, in buffer coordinates
* @y: y position, in buffer coordinates
*
* Retrieves the iterator pointing to the character at buffer
* coordinates @x and @y.
*
* Buffer coordinates are coordinates for the entire buffer, not just
* the currently-displayed portion. If you have coordinates from an event,
* you have to convert those to buffer coordinates with
* [method@Gtk.TextView.window_to_buffer_coords].
*
* Note that this is different from [method@Gtk.TextView.get_iter_at_location],
* which returns cursor locations, i.e. positions between characters.
*
* Returns: %TRUE if the position is over text
*/
gboolean
gtk_text_view_get_iter_at_position (GtkTextView *text_view,
GtkTextIter *iter,
int *trailing,
int x,
int y)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_get_iter_at_position (text_view->priv->layout, iter, trailing, x, y);
}
/**
* gtk_text_view_get_iter_location:
* @text_view: a `GtkTextView`
* @iter: a `GtkTextIter`
* @location: (out): bounds of the character at @iter
*
* Gets a rectangle which roughly contains the character at @iter.
*
* The rectangle position is in buffer coordinates; use
* [method@Gtk.TextView.buffer_to_window_coords] to convert these
* coordinates to coordinates for one of the windows in the text view.
*/
void
gtk_text_view_get_iter_location (GtkTextView *text_view,
const GtkTextIter *iter,
GdkRectangle *location)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (gtk_text_iter_get_buffer (iter) == get_buffer (text_view));
gtk_text_view_ensure_layout (text_view);
gtk_text_layout_get_iter_location (text_view->priv->layout, iter, location);
}
/**
* gtk_text_view_get_line_yrange:
* @text_view: a `GtkTextView`
* @iter: a `GtkTextIter`
* @y: (out): return location for a y coordinate
* @height: (out): return location for a height
*
* Gets the y coordinate of the top of the line containing @iter,
* and the height of the line.
*
* The coordinate is a buffer coordinate; convert to window
* coordinates with [method@Gtk.TextView.buffer_to_window_coords].
*/
void
gtk_text_view_get_line_yrange (GtkTextView *text_view,
const GtkTextIter *iter,
int *y,
int *height)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (gtk_text_iter_get_buffer (iter) == get_buffer (text_view));
gtk_text_view_ensure_layout (text_view);
gtk_text_layout_get_line_yrange (text_view->priv->layout,
iter,
y,
height);
}
/**
* gtk_text_view_get_line_at_y:
* @text_view: a `GtkTextView`
* @target_iter: (out): a `GtkTextIter`
* @y: a y coordinate
* @line_top: (out): return location for top coordinate of the line
*
* Gets the `GtkTextIter` at the start of the line containing
* the coordinate @y.
*
* @y is in buffer coordinates, convert from window coordinates with
* [method@Gtk.TextView.window_to_buffer_coords]. If non-%NULL,
* @line_top will be filled with the coordinate of the top edge
* of the line.
*/
void
gtk_text_view_get_line_at_y (GtkTextView *text_view,
GtkTextIter *target_iter,
int y,
int *line_top)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
gtk_text_view_ensure_layout (text_view);
gtk_text_layout_get_line_at_y (text_view->priv->layout,
target_iter,
y,
line_top);
}
/* Same as gtk_text_view_scroll_to_iter but deal with
* (top_margin / top_padding) and (bottom_margin / bottom_padding).
* When with_border == TRUE and you scroll on the edges,
* all borders are shown for the corresponding edge.
* When with_border == FALSE, only left margin and right_margin
* can be seen because they can be can be overwritten by tags.
*/
static gboolean
_gtk_text_view_scroll_to_iter (GtkTextView *text_view,
GtkTextIter *iter,
double within_margin,
gboolean use_align,
double xalign,
double yalign,
gboolean with_border)
{
GtkTextViewPrivate *priv = text_view->priv;
GtkWidget *widget;
GdkRectangle cursor;
int cursor_bottom;
int cursor_right;
GdkRectangle screen;
GdkRectangle screen_dest;
int screen_inner_left;
int screen_inner_right;
int screen_inner_top;
int screen_inner_bottom;
int border_xoffset = 0;
int border_yoffset = 0;
int within_margin_xoffset;
int within_margin_yoffset;
int buffer_bottom;
int buffer_right;
gboolean retval = FALSE;
/* FIXME why don't we do the validate-at-scroll-destination thing
* from flush_scroll in this function? I think it wasn't done before
* because changed_handler was screwed up, but I could be wrong.
*/
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
g_return_val_if_fail (within_margin >= 0.0 && within_margin < 0.5, FALSE);
g_return_val_if_fail (xalign >= 0.0 && xalign <= 1.0, FALSE);
g_return_val_if_fail (yalign >= 0.0 && yalign <= 1.0, FALSE);
widget = GTK_WIDGET (text_view);
DV(g_print(G_STRLOC"\n"));
gtk_text_layout_get_iter_location (priv->layout,
iter,
&cursor);
DV (g_print (" target cursor %d,%d %d x %d\n", cursor.x, cursor.y, cursor.width, cursor.height));
/* In each direction, *_border are the addition of *_padding and *_margin
*
* Vadjustment value:
* (-priv->top_margin) [top padding][top margin] (0) [text][bottom margin][bottom padding]
*
* Hadjustment value:
* (-priv->left_padding) [left padding] (0) [left margin][text][right margin][right padding]
*
* Buffer coordinates:
* on x: (0) [left margin][text][right margin]
* on y: (0) [text]
*
* left margin and right margin are part of the x buffer coordinate
* because they are part of the pango layout so that they can be
* overwritten by tags.
*
* Canvas coordinates:
* (the canvas is the virtual window where the content of the buffer is drawn )
*
* on x: (-priv->left_padding) [left padding] (0) [left margin][text][right margin][right padding]
* on y: (-priv->top_margin) [top margin][top padding] (0) [text][bottom margin][bottom padding]
*
* (priv->xoffset, priv->yoffset) is the origin of the view (visible part of the canvas)
* in canvas coordinates.
* As you can see, canvas coordinates and buffer coordinates are compatible but the canvas
* can be larger than the buffer depending of the border size.
*/
cursor_bottom = cursor.y + cursor.height;
cursor_right = cursor.x + cursor.width;
/* Current position of the view in canvas coordinates */
screen.x = priv->xoffset;
screen.y = priv->yoffset;
screen.width = SCREEN_WIDTH (widget);
screen.height = SCREEN_HEIGHT (widget);
within_margin_xoffset = screen.width * within_margin;
within_margin_yoffset = screen.height * within_margin;
screen_inner_left = screen.x + within_margin_xoffset;
screen_inner_top = screen.y + within_margin_yoffset;
screen_inner_right = screen.x + screen.width - within_margin_xoffset;
screen_inner_bottom = screen.y + screen.height - within_margin_yoffset;
buffer_bottom = priv->height - priv->bottom_margin;
buffer_right = priv->width - priv->right_margin - priv->left_padding - 1;
screen_dest.x = screen.x;
screen_dest.y = screen.y;
screen_dest.width = screen.width - within_margin_xoffset * 2;
screen_dest.height = screen.height - within_margin_yoffset * 2;
/* Minimum authorised size check */
if (screen_dest.width < 1)
screen_dest.width = 1;
if (screen_dest.height < 1)
screen_dest.height = 1;
/* The alignment affects the point in the target character that we
* choose to align. If we're doing right/bottom alignment, we align
* the right/bottom edge of the character the mark is at; if we're
* doing left/top we align the left/top edge of the character; if
* we're doing center alignment we align the center of the
* character.
*
* The different cases handle on each direction:
* 1. cursor outside of the inner area define by within_margin
* 2. if use_align == TRUE, alignment with xalign and yalign
* 3. scrolling on the edges dependent of with_border
*/
/* Vertical scroll */
if (use_align)
{
int cursor_y_alignment_offset;
cursor_y_alignment_offset = (cursor.height * yalign) - (screen_dest.height * yalign);
screen_dest.y = cursor.y + cursor_y_alignment_offset - within_margin_yoffset;
}
else
{
/* move minimum to get onscreen, showing the
* top_margin or bottom_margin when necessary
*/
if (cursor.y < screen_inner_top)
{
if (cursor.y == 0)
border_yoffset = with_border ? priv->top_padding : 0;
screen_dest.y = cursor.y - MAX (within_margin_yoffset, border_yoffset);
}
else if (cursor_bottom > screen_inner_bottom)
{
if (cursor_bottom == buffer_bottom - priv->top_margin)
border_yoffset = with_border ? priv->bottom_padding : 0;
screen_dest.y = cursor_bottom - screen_dest.height -
MAX (within_margin_yoffset, border_yoffset);
}
}
if (screen_dest.y != screen.y)
{
gtk_adjustment_animate_to_value (priv->vadjustment, screen_dest.y + priv->top_margin);
DV (g_print (" vert increment %d\n", screen_dest.y - screen.y));
}
/* Horizontal scroll */
if (use_align)
{
int cursor_x_alignment_offset;
cursor_x_alignment_offset = (cursor.width * xalign) - (screen_dest.width * xalign);
screen_dest.x = cursor.x + cursor_x_alignment_offset - within_margin_xoffset;
}
else
{
/* move minimum to get onscreen, showing the
* left_margin or right_margin when necessary
*/
if (cursor.x < screen_inner_left)
{
if (cursor.x == priv->left_margin)
border_xoffset = with_border ? priv->left_padding : 0;
screen_dest.x = cursor.x - MAX (within_margin_xoffset, border_xoffset);
}
else if (cursor_right >= screen_inner_right - 1)
{
if (cursor.x >= buffer_right - priv->right_padding)
border_xoffset = with_border ? priv->right_padding : 0;
screen_dest.x = cursor_right - screen_dest.width -
MAX (within_margin_xoffset, border_xoffset) + 1;
}
}
if (screen_dest.x != screen.x)
{
gtk_adjustment_animate_to_value (priv->hadjustment, screen_dest.x + priv->left_padding);
DV (g_print (" horiz increment %d\n", screen_dest.x - screen.x));
}
retval = (screen.y != screen_dest.y) || (screen.x != screen_dest.x);
DV(g_print (">%s ("G_STRLOC")\n", retval ? "Actually scrolled" : "Didn't end up scrolling"));
return retval;
}
/**
* gtk_text_view_scroll_to_iter:
* @text_view: a `GtkTextView`
* @iter: a `GtkTextIter`
* @within_margin: margin as a [0.0,0.5) fraction of screen size
* @use_align: whether to use alignment arguments (if %FALSE,
* just get the mark onscreen)
* @xalign: horizontal alignment of mark within visible area
* @yalign: vertical alignment of mark within visible area
*
* Scrolls @text_view so that @iter is on the screen in the position
* indicated by @xalign and @yalign.
*
* An alignment of 0.0 indicates left or top, 1.0 indicates right or
* bottom, 0.5 means center. If @use_align is %FALSE, the text scrolls
* the minimal distance to get the mark onscreen, possibly not scrolling
* at all. The effective screen for purposes of this function is reduced
* by a margin of size @within_margin.
*
* Note that this function uses the currently-computed height of the
* lines in the text buffer. Line heights are computed in an idle
* handler; so this function may not have the desired effect if it’s
* called before the height computations. To avoid oddness, consider
* using [method@Gtk.TextView.scroll_to_mark] which saves a point to be
* scrolled to after line validation.
*
* Returns: %TRUE if scrolling occurred
*/
gboolean
gtk_text_view_scroll_to_iter (GtkTextView *text_view,
GtkTextIter *iter,
double within_margin,
gboolean use_align,
double xalign,
double yalign)
{
return _gtk_text_view_scroll_to_iter (text_view,
iter,
within_margin,
use_align,
xalign,
yalign,
FALSE);
}
static void
free_pending_scroll (GtkTextPendingScroll *scroll)
{
if (!gtk_text_mark_get_deleted (scroll->mark))
gtk_text_buffer_delete_mark (gtk_text_mark_get_buffer (scroll->mark),
scroll->mark);
g_object_unref (scroll->mark);
g_slice_free (GtkTextPendingScroll, scroll);
}
static void
cancel_pending_scroll (GtkTextView *text_view)
{
if (text_view->priv->pending_scroll)
{
free_pending_scroll (text_view->priv->pending_scroll);
text_view->priv->pending_scroll = NULL;
}
}
static void
gtk_text_view_queue_scroll (GtkTextView *text_view,
GtkTextMark *mark,
double within_margin,
gboolean use_align,
double xalign,
double yalign)
{
GtkTextIter iter;
GtkTextPendingScroll *scroll;
DV(g_print(G_STRLOC"\n"));
scroll = g_slice_new (GtkTextPendingScroll);
scroll->within_margin = within_margin;
scroll->use_align = use_align;
scroll->xalign = xalign;
scroll->yalign = yalign;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, mark);
scroll->mark = gtk_text_buffer_create_mark (get_buffer (text_view),
NULL,
&iter,
gtk_text_mark_get_left_gravity (mark));
g_object_ref (scroll->mark);
cancel_pending_scroll (text_view);
text_view->priv->pending_scroll = scroll;
}
static gboolean
gtk_text_view_flush_scroll (GtkTextView *text_view)
{
int height;
GtkTextIter iter;
GtkTextPendingScroll *scroll;
gboolean retval;
GtkWidget *widget;
widget = GTK_WIDGET (text_view);
DV(g_print(G_STRLOC"\n"));
if (text_view->priv->pending_scroll == NULL)
{
DV (g_print ("in flush scroll, no pending scroll\n"));
return FALSE;
}
scroll = text_view->priv->pending_scroll;
/* avoid recursion */
text_view->priv->pending_scroll = NULL;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, scroll->mark);
/* Validate area around the scroll destination, so the adjustment
* can meaningfully point into that area. We must validate
* enough area to be sure that after we scroll, everything onscreen
* is valid; otherwise, validation will maintain the first para
* in one place, but may push the target iter off the bottom of
* the screen.
*/
DV(g_print (">Validating scroll destination ("G_STRLOC")\n"));
height = gtk_widget_get_height (widget);
gtk_text_layout_validate_yrange (text_view->priv->layout, &iter,
- (height * 2),
height * 2);
DV(g_print (">Done validating scroll destination ("G_STRLOC")\n"));
/* Ensure we have updated width/height */
gtk_text_view_update_adjustments (text_view);
retval = _gtk_text_view_scroll_to_iter (text_view,
&iter,
scroll->within_margin,
scroll->use_align,
scroll->xalign,
scroll->yalign,
TRUE);
gtk_text_view_update_handles (text_view);
free_pending_scroll (scroll);
return retval;
}
static void
gtk_text_view_update_adjustments (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
int width = 0, height = 0;
DV(g_print(">Updating adjustments ("G_STRLOC")\n"));
priv = text_view->priv;
if (priv->layout)
gtk_text_layout_get_size (priv->layout, &width, &height);
/* Make room for the cursor after the last character in the widest line */
width += SPACE_FOR_CURSOR;
height += priv->top_margin + priv->bottom_margin;
if (priv->width != width || priv->height != height)
{
priv->width = width;
priv->height = height;
gtk_text_view_set_hadjustment_values (text_view);
gtk_text_view_set_vadjustment_values (text_view);
}
}
static void
gtk_text_view_update_layout_width (GtkTextView *text_view)
{
DV(g_print(">Updating layout width ("G_STRLOC")\n"));
gtk_text_view_ensure_layout (text_view);
gtk_text_layout_set_screen_width (text_view->priv->layout,
MAX (1, SCREEN_WIDTH (text_view) - SPACE_FOR_CURSOR));
}
static void
gtk_text_view_update_im_spot_location (GtkTextView *text_view)
{
GdkRectangle area;
if (text_view->priv->layout == NULL)
return;
gtk_text_view_get_cursor_locations (text_view, NULL, &area, NULL);
area.x -= text_view->priv->xoffset;
area.y -= text_view->priv->yoffset;
/* Width returned by Pango indicates direction of cursor,
* by its sign more than the size of cursor.
*/
area.width = 0;
gtk_im_context_set_cursor_location (text_view->priv->im_context, &area);
}
static gboolean
do_update_im_spot_location (gpointer text_view)
{
GtkTextViewPrivate *priv;
priv = GTK_TEXT_VIEW (text_view)->priv;
priv->im_spot_idle = 0;
gtk_text_view_update_im_spot_location (text_view);
return FALSE;
}
static void
queue_update_im_spot_location (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
priv = text_view->priv;
/* Use priority a little higher than GTK_TEXT_VIEW_PRIORITY_VALIDATE,
* so we don't wait until the entire buffer has been validated. */
if (!priv->im_spot_idle)
{
priv->im_spot_idle = g_idle_add_full (GTK_TEXT_VIEW_PRIORITY_VALIDATE - 1,
do_update_im_spot_location,
text_view,
NULL);
gdk_source_set_static_name_by_id (priv->im_spot_idle, "[gtk] do_update_im_spot_location");
}
}
static void
flush_update_im_spot_location (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
priv = text_view->priv;
if (priv->im_spot_idle)
{
g_source_remove (priv->im_spot_idle);
priv->im_spot_idle = 0;
gtk_text_view_update_im_spot_location (text_view);
}
}
/**
* gtk_text_view_scroll_to_mark:
* @text_view: a `GtkTextView`
* @mark: a `GtkTextMark`
* @within_margin: margin as a [0.0,0.5) fraction of screen size
* @use_align: whether to use alignment arguments (if %FALSE, just
* get the mark onscreen)
* @xalign: horizontal alignment of mark within visible area
* @yalign: vertical alignment of mark within visible area
*
* Scrolls @text_view so that @mark is on the screen in the position
* indicated by @xalign and @yalign.
*
* An alignment of 0.0 indicates left or top, 1.0 indicates right or
* bottom, 0.5 means center. If @use_align is %FALSE, the text scrolls
* the minimal distance to get the mark onscreen, possibly not scrolling
* at all. The effective screen for purposes of this function is reduced
* by a margin of size @within_margin.
*/
void
gtk_text_view_scroll_to_mark (GtkTextView *text_view,
GtkTextMark *mark,
double within_margin,
gboolean use_align,
double xalign,
double yalign)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (GTK_IS_TEXT_MARK (mark));
g_return_if_fail (within_margin >= 0.0 && within_margin < 0.5);
g_return_if_fail (xalign >= 0.0 && xalign <= 1.0);
g_return_if_fail (yalign >= 0.0 && yalign <= 1.0);
/* We need to verify that the buffer contains the mark, otherwise this
* can lead to data structure corruption later on.
*/
g_return_if_fail (get_buffer (text_view) == gtk_text_mark_get_buffer (mark));
gtk_text_view_queue_scroll (text_view, mark,
within_margin,
use_align,
xalign,
yalign);
/* If no validation is pending, we need to go ahead and force an
* immediate scroll.
*/
if (text_view->priv->layout &&
gtk_text_layout_is_valid (text_view->priv->layout))
gtk_text_view_flush_scroll (text_view);
}
/**
* gtk_text_view_scroll_mark_onscreen:
* @text_view: a `GtkTextView`
* @mark: a mark in the buffer for @text_view
*
* Scrolls @text_view the minimum distance such that @mark is contained
* within the visible area of the widget.
*/
void
gtk_text_view_scroll_mark_onscreen (GtkTextView *text_view,
GtkTextMark *mark)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (GTK_IS_TEXT_MARK (mark));
/* We need to verify that the buffer contains the mark, otherwise this
* can lead to data structure corruption later on.
*/
g_return_if_fail (get_buffer (text_view) == gtk_text_mark_get_buffer (mark));
gtk_text_view_scroll_to_mark (text_view, mark, 0.0, FALSE, 0.0, 0.0);
}
static gboolean
clamp_iter_onscreen (GtkTextView *text_view, GtkTextIter *iter)
{
GdkRectangle visible_rect;
gtk_text_view_get_visible_rect (text_view, &visible_rect);
return gtk_text_layout_clamp_iter_to_vrange (text_view->priv->layout, iter,
visible_rect.y,
visible_rect.y + visible_rect.height);
}
/**
* gtk_text_view_move_mark_onscreen:
* @text_view: a `GtkTextView`
* @mark: a `GtkTextMark`
*
* Moves a mark within the buffer so that it's
* located within the currently-visible text area.
*
* Returns: %TRUE if the mark moved (wasn’t already onscreen)
*/
gboolean
gtk_text_view_move_mark_onscreen (GtkTextView *text_view,
GtkTextMark *mark)
{
GtkTextIter iter;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (mark != NULL, FALSE);
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, mark);
if (clamp_iter_onscreen (text_view, &iter))
{
gtk_text_buffer_move_mark (get_buffer (text_view), mark, &iter);
return TRUE;
}
else
return FALSE;
}
/**
* gtk_text_view_get_visible_rect:
* @text_view: a `GtkTextView`
* @visible_rect: (out): rectangle to fill
*
* Fills @visible_rect with the currently-visible
* region of the buffer, in buffer coordinates.
*
* Convert to window coordinates with
* [method@Gtk.TextView.buffer_to_window_coords].
*/
void
gtk_text_view_get_visible_rect (GtkTextView *text_view,
GdkRectangle *visible_rect)
{
GtkWidget *widget;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
widget = GTK_WIDGET (text_view);
if (visible_rect)
{
visible_rect->x = text_view->priv->xoffset;
visible_rect->y = text_view->priv->yoffset;
visible_rect->width = SCREEN_WIDTH (widget);
visible_rect->height = SCREEN_HEIGHT (widget);
DV(g_print(" visible rect: %d,%d %d x %d\n",
visible_rect->x,
visible_rect->y,
visible_rect->width,
visible_rect->height));
}
}
/**
* gtk_text_view_set_wrap_mode: (attributes org.gtk.Method.set_property=wrap-mode)
* @text_view: a `GtkTextView`
* @wrap_mode: a `GtkWrapMode`
*
* Sets the line wrapping for the view.
*/
void
gtk_text_view_set_wrap_mode (GtkTextView *text_view,
GtkWrapMode wrap_mode)
{
GtkTextViewPrivate *priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
priv = text_view->priv;
if (priv->wrap_mode != wrap_mode)
{
priv->wrap_mode = wrap_mode;
if (priv->layout && priv->layout->default_style)
{
priv->layout->default_style->wrap_mode = wrap_mode;
gtk_text_layout_default_style_changed (priv->layout);
}
g_object_notify (G_OBJECT (text_view), "wrap-mode");
}
}
/**
* gtk_text_view_get_wrap_mode: (attributes org.gtk.Method.get_property=wrap-mode)
* @text_view: a `GtkTextView`
*
* Gets the line wrapping for the view.
*
* Returns: the line wrap setting
*/
GtkWrapMode
gtk_text_view_get_wrap_mode (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), GTK_WRAP_NONE);
return text_view->priv->wrap_mode;
}
/**
* gtk_text_view_set_editable: (attributes org.gtk.Method.set_property=editable)
* @text_view: a `GtkTextView`
* @setting: whether it’s editable
*
* Sets the default editability of the `GtkTextView`.
*
* You can override this default setting with tags in the buffer,
* using the “editable” attribute of tags.
*/
void
gtk_text_view_set_editable (GtkTextView *text_view,
gboolean setting)
{
GtkTextViewPrivate *priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
priv = text_view->priv;
setting = setting != FALSE;
if (priv->editable != setting)
{
if (!setting)
{
gtk_text_view_reset_im_context (text_view);
if (gtk_widget_has_focus (GTK_WIDGET (text_view)))
gtk_im_context_focus_out (priv->im_context);
}
priv->editable = setting;
if (setting && gtk_widget_has_focus (GTK_WIDGET (text_view)))
gtk_im_context_focus_in (priv->im_context);
gtk_event_controller_key_set_im_context (GTK_EVENT_CONTROLLER_KEY (priv->key_controller),
setting ? priv->im_context : NULL);
if (priv->layout && priv->layout->default_style)
{
gtk_text_layout_set_overwrite_mode (priv->layout,
priv->overwrite_mode && priv->editable);
priv->layout->default_style->editable = priv->editable;
gtk_text_layout_default_style_changed (priv->layout);
}
gtk_accessible_update_property (GTK_ACCESSIBLE (text_view),
GTK_ACCESSIBLE_PROPERTY_READ_ONLY, !setting,
-1);
gtk_text_view_update_emoji_action (text_view);
g_object_notify (G_OBJECT (text_view), "editable");
}
}
/**
* gtk_text_view_get_editable: (attributes org.gtk.Method.get_property=editable)
* @text_view: a `GtkTextView`
*
* Returns the default editability of the `GtkTextView`.
*
* Tags in the buffer may override this setting for some ranges of text.
*
* Returns: whether text is editable by default
*/
gboolean
gtk_text_view_get_editable (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
return text_view->priv->editable;
}
/**
* gtk_text_view_set_pixels_above_lines: (attributes org.gtk.Method.set_property=pixels-above-lines)
* @text_view: a `GtkTextView`
* @pixels_above_lines: pixels above paragraphs
*
* Sets the default number of blank pixels above paragraphs in @text_view.
*
* Tags in the buffer for @text_view may override the defaults.
*/
void
gtk_text_view_set_pixels_above_lines (GtkTextView *text_view,
int pixels_above_lines)
{
GtkTextViewPrivate *priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
priv = text_view->priv;
if (priv->pixels_above_lines != pixels_above_lines)
{
priv->pixels_above_lines = pixels_above_lines;
if (priv->layout && priv->layout->default_style)
{
priv->layout->default_style->pixels_above_lines = pixels_above_lines;
gtk_text_layout_default_style_changed (priv->layout);
}
g_object_notify (G_OBJECT (text_view), "pixels-above-lines");
}
}
/**
* gtk_text_view_get_pixels_above_lines: (attributes org.gtk.Method.get_property=pixels-above-lines)
* @text_view: a `GtkTextView`
*
* Gets the default number of pixels to put above paragraphs.
*
* Adding this function with [method@Gtk.TextView.get_pixels_below_lines]
* is equal to the line space between each paragraph.
*
* Returns: default number of pixels above paragraphs
*/
int
gtk_text_view_get_pixels_above_lines (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->priv->pixels_above_lines;
}
/**
* gtk_text_view_set_pixels_below_lines: (attributes org.gtk.Method.set_property=pixels-below-lines)
* @text_view: a `GtkTextView`
* @pixels_below_lines: pixels below paragraphs
*
* Sets the default number of pixels of blank space
* to put below paragraphs in @text_view.
*
* May be overridden by tags applied to @text_view’s buffer.
*/
void
gtk_text_view_set_pixels_below_lines (GtkTextView *text_view,
int pixels_below_lines)
{
GtkTextViewPrivate *priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
priv = text_view->priv;
if (priv->pixels_below_lines != pixels_below_lines)
{
priv->pixels_below_lines = pixels_below_lines;
if (priv->layout && priv->layout->default_style)
{
priv->layout->default_style->pixels_below_lines = pixels_below_lines;
gtk_text_layout_default_style_changed (priv->layout);
}
g_object_notify (G_OBJECT (text_view), "pixels-below-lines");
}
}
/**
* gtk_text_view_get_pixels_below_lines: (attributes org.gtk.Method.get_property=pixels-below-lines)
* @text_view: a `GtkTextView`
*
* Gets the default number of pixels to put below paragraphs.
*
* The line space is the sum of the value returned by this function and
* the value returned by [method@Gtk.TextView.get_pixels_above_lines].
*
* Returns: default number of blank pixels below paragraphs
*/
int
gtk_text_view_get_pixels_below_lines (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->priv->pixels_below_lines;
}
/**
* gtk_text_view_set_pixels_inside_wrap: (attributes org.gtk.Method.set_property=pixels-inside-wrap)
* @text_view: a `GtkTextView`
* @pixels_inside_wrap: default number of pixels between wrapped lines
*
* Sets the default number of pixels of blank space to leave between
* display/wrapped lines within a paragraph.
*
* May be overridden by tags in @text_view’s buffer.
*/
void
gtk_text_view_set_pixels_inside_wrap (GtkTextView *text_view,
int pixels_inside_wrap)
{
GtkTextViewPrivate *priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
priv = text_view->priv;
if (priv->pixels_inside_wrap != pixels_inside_wrap)
{
priv->pixels_inside_wrap = pixels_inside_wrap;
if (priv->layout && priv->layout->default_style)
{
priv->layout->default_style->pixels_inside_wrap = pixels_inside_wrap;
gtk_text_layout_default_style_changed (priv->layout);
}
g_object_notify (G_OBJECT (text_view), "pixels-inside-wrap");
}
}
/**
* gtk_text_view_get_pixels_inside_wrap: (attributes org.gtk.Method.get_property=pixels-inside-wrap)
* @text_view: a `GtkTextView`
*
* Gets the default number of pixels to put between wrapped lines
* inside a paragraph.
*
* Returns: default number of pixels of blank space between wrapped lines
*/
int
gtk_text_view_get_pixels_inside_wrap (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->priv->pixels_inside_wrap;
}
/**
* gtk_text_view_set_justification: (attributes org.gtk.Method.set_property=justification)
* @text_view: a `GtkTextView`
* @justification: justification
*
* Sets the default justification of text in @text_view.
*
* Tags in the view’s buffer may override the default.
*/
void
gtk_text_view_set_justification (GtkTextView *text_view,
GtkJustification justification)
{
GtkTextViewPrivate *priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
priv = text_view->priv;
if (priv->justify != justification)
{
priv->justify = justification;
if (priv->layout && priv->layout->default_style)
{
priv->layout->default_style->justification = justification;
gtk_text_layout_default_style_changed (priv->layout);
}
g_object_notify (G_OBJECT (text_view), "justification");
}
}
/**
* gtk_text_view_get_justification: (attributes org.gtk.Method.get_property=justification)
* @text_view: a `GtkTextView`
*
* Gets the default justification of paragraphs in @text_view.
*
* Tags in the buffer may override the default.
*
* Returns: default justification
*/
GtkJustification
gtk_text_view_get_justification (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), GTK_JUSTIFY_LEFT);
return text_view->priv->justify;
}
/**
* gtk_text_view_set_left_margin: (attributes org.gtk.Method.set_property=left-margin)
* @text_view: a `GtkTextView`
* @left_margin: left margin in pixels
*
* Sets the default left margin for text in @text_view.
*
* Tags in the buffer may override the default.
*
* Note that this function is confusingly named.
* In CSS terms, the value set here is padding.
*/
void
gtk_text_view_set_left_margin (GtkTextView *text_view,
int left_margin)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (priv->left_margin != left_margin)
{
priv->left_margin = left_margin;
priv->left_margin = left_margin + priv->left_padding;
if (priv->layout && priv->layout->default_style)
{
priv->layout->default_style->left_margin = left_margin;
gtk_text_layout_default_style_changed (priv->layout);
}
g_object_notify (G_OBJECT (text_view), "left-margin");
}
}
/**
* gtk_text_view_get_left_margin: (attributes org.gtk.Method.get_property=left-margin)
* @text_view: a `GtkTextView`
*
* Gets the default left margin size of paragraphs in the @text_view.
*
* Tags in the buffer may override the default.
*
* Returns: left margin in pixels
*/
int
gtk_text_view_get_left_margin (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->priv->left_margin;
}
/**
* gtk_text_view_set_right_margin: (attributes org.gtk.Method.set_property=right-margin)
* @text_view: a `GtkTextView`
* @right_margin: right margin in pixels
*
* Sets the default right margin for text in the text view.
*
* Tags in the buffer may override the default.
*
* Note that this function is confusingly named.
* In CSS terms, the value set here is padding.
*/
void
gtk_text_view_set_right_margin (GtkTextView *text_view,
int right_margin)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (priv->right_margin != right_margin)
{
priv->right_margin = right_margin;
priv->right_margin = right_margin + priv->right_padding;
if (priv->layout && priv->layout->default_style)
{
priv->layout->default_style->right_margin = right_margin;
gtk_text_layout_default_style_changed (priv->layout);
}
g_object_notify (G_OBJECT (text_view), "right-margin");
}
}
/**
* gtk_text_view_get_right_margin: (attributes org.gtk.Method.get_property=right-margin)
* @text_view: a `GtkTextView`
*
* Gets the default right margin for text in @text_view.
*
* Tags in the buffer may override the default.
*
* Returns: right margin in pixels
*/
int
gtk_text_view_get_right_margin (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->priv->right_margin;
}
/**
* gtk_text_view_set_top_margin: (attributes org.gtk.Method.set_property=top-margin)
* @text_view: a `GtkTextView`
* @top_margin: top margin in pixels
*
* Sets the top margin for text in @text_view.
*
* Note that this function is confusingly named.
* In CSS terms, the value set here is padding.
*/
void
gtk_text_view_set_top_margin (GtkTextView *text_view,
int top_margin)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (priv->top_margin != top_margin)
{
priv->yoffset += priv->top_margin - top_margin;
priv->top_margin = top_margin;
priv->top_margin = top_margin + priv->top_padding;
if (priv->layout && priv->layout->default_style)
gtk_text_layout_default_style_changed (priv->layout);
gtk_text_view_invalidate (text_view);
g_object_notify (G_OBJECT (text_view), "top-margin");
}
}
/**
* gtk_text_view_get_top_margin: (attributes org.gtk.Method.get_property=top-margin)
* @text_view: a `GtkTextView`
*
* Gets the top margin for text in the @text_view.
*
* Returns: top margin in pixels
*/
int
gtk_text_view_get_top_margin (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->priv->top_margin;
}
/**
* gtk_text_view_set_bottom_margin: (attributes org.gtk.Method.set_property=bottom-margin)
* @text_view: a `GtkTextView`
* @bottom_margin: bottom margin in pixels
*
* Sets the bottom margin for text in @text_view.
*
* Note that this function is confusingly named.
* In CSS terms, the value set here is padding.
*/
void
gtk_text_view_set_bottom_margin (GtkTextView *text_view,
int bottom_margin)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (priv->bottom_margin != bottom_margin)
{
priv->bottom_margin = bottom_margin;
priv->bottom_margin = bottom_margin + priv->bottom_padding;
if (priv->layout && priv->layout->default_style)
gtk_text_layout_default_style_changed (priv->layout);
g_object_notify (G_OBJECT (text_view), "bottom-margin");
}
}
/**
* gtk_text_view_get_bottom_margin: (attributes org.gtk.Method.get_property=bottom-margin)
* @text_view: a `GtkTextView`
*
* Gets the bottom margin for text in the @text_view.
*
* Returns: bottom margin in pixels
*/
int
gtk_text_view_get_bottom_margin (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->priv->bottom_margin;
}
/**
* gtk_text_view_set_indent: (attributes org.gtk.Method.set_property=indent)
* @text_view: a `GtkTextView`
* @indent: indentation in pixels
*
* Sets the default indentation for paragraphs in @text_view.
*
* Tags in the buffer may override the default.
*/
void
gtk_text_view_set_indent (GtkTextView *text_view,
int indent)
{
GtkTextViewPrivate *priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
priv = text_view->priv;
if (priv->indent != indent)
{
priv->indent = indent;
if (priv->layout && priv->layout->default_style)
{
priv->layout->default_style->indent = indent;
gtk_text_layout_default_style_changed (priv->layout);
}
g_object_notify (G_OBJECT (text_view), "indent");
}
}
/**
* gtk_text_view_get_indent: (attributes org.gtk.Method.get_property=indent)
* @text_view: a `GtkTextView`
*
* Gets the default indentation of paragraphs in @text_view.
*
* Tags in the view’s buffer may override the default.
* The indentation may be negative.
*
* Returns: number of pixels of indentation
*/
int
gtk_text_view_get_indent (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->priv->indent;
}
/**
* gtk_text_view_set_tabs: (attributes org.gtk.Method.set_property=tabs)
* @text_view: a `GtkTextView`
* @tabs: tabs as a `PangoTabArray`
*
* Sets the default tab stops for paragraphs in @text_view.
*
* Tags in the buffer may override the default.
*/
void
gtk_text_view_set_tabs (GtkTextView *text_view,
PangoTabArray *tabs)
{
GtkTextViewPrivate *priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
priv = text_view->priv;
if (priv->tabs)
pango_tab_array_free (priv->tabs);
priv->tabs = tabs ? pango_tab_array_copy (tabs) : NULL;
if (priv->layout && priv->layout->default_style)
{
/* some unkosher futzing in internal struct details... */
if (priv->layout->default_style->tabs)
pango_tab_array_free (priv->layout->default_style->tabs);
priv->layout->default_style->tabs =
priv->tabs ? pango_tab_array_copy (priv->tabs) : NULL;
gtk_text_layout_default_style_changed (priv->layout);
}
g_object_notify (G_OBJECT (text_view), "tabs");
}
/**
* gtk_text_view_get_tabs: (attributes org.gtk.Method.get_property=tabs)
* @text_view: a `GtkTextView`
*
* Gets the default tabs for @text_view.
*
* Tags in the buffer may override the defaults. The returned array
* will be %NULL if “standard” (8-space) tabs are used. Free the
* return value with [method@Pango.TabArray.free].
*
* Returns: (nullable) (transfer full): copy of default tab array,
* or %NULL if standard tabs are used; must be freed with
* [method@Pango.TabArray.free].
*/
PangoTabArray*
gtk_text_view_get_tabs (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
return text_view->priv->tabs ? pango_tab_array_copy (text_view->priv->tabs) : NULL;
}
static void
gtk_text_view_toggle_cursor_visible (GtkTextView *text_view)
{
gtk_text_view_set_cursor_visible (text_view, !text_view->priv->cursor_visible);
}
/**
* gtk_text_view_set_cursor_visible: (attributes org.gtk.Method.set_property=cursor-visible)
* @text_view: a `GtkTextView`
* @setting: whether to show the insertion cursor
*
* Toggles whether the insertion point should be displayed.
*
* A buffer with no editable text probably shouldn’t have a visible
* cursor, so you may want to turn the cursor off.
*
* Note that this property may be overridden by the
* [property@GtkSettings:gtk-keynav-use-caret] setting.
*/
void
gtk_text_view_set_cursor_visible (GtkTextView *text_view,
gboolean setting)
{
GtkTextViewPrivate *priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
priv = text_view->priv;
setting = (setting != FALSE);
if (priv->cursor_visible != setting)
{
priv->cursor_visible = setting;
if (gtk_widget_has_focus (GTK_WIDGET (text_view)))
{
if (priv->layout)
{
gtk_text_layout_set_cursor_visible (priv->layout, setting);
gtk_text_view_check_cursor_blink (text_view);
}
}
g_object_notify (G_OBJECT (text_view), "cursor-visible");
}
}
/**
* gtk_text_view_get_cursor_visible: (attributes org.gtk.Method.get_property=cursor-visible)
* @text_view: a `GtkTextView`
*
* Find out whether the cursor should be displayed.
*
* Returns: whether the insertion mark is visible
*/
gboolean
gtk_text_view_get_cursor_visible (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
return text_view->priv->cursor_visible;
}
/**
* gtk_text_view_reset_cursor_blink:
* @text_view: a `GtkTextView`
*
* Ensures that the cursor is shown.
*
* This also resets the time that it will stay blinking (or
* visible, in case blinking is disabled).
*
* This function should be called in response to user input
* (e.g. from derived classes that override the textview's
* event handlers).
*/
void
gtk_text_view_reset_cursor_blink (GtkTextView *text_view)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
gtk_text_view_reset_blink_time (text_view);
gtk_text_view_pend_cursor_blink (text_view);
}
/**
* gtk_text_view_place_cursor_onscreen:
* @text_view: a `GtkTextView`
*
* Moves the cursor to the currently visible region of the
* buffer.
*
* Returns: %TRUE if the cursor had to be moved.
*/
gboolean
gtk_text_view_place_cursor_onscreen (GtkTextView *text_view)
{
GtkTextIter insert;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_insert (get_buffer (text_view)));
if (clamp_iter_onscreen (text_view, &insert))
{
gtk_text_buffer_place_cursor (get_buffer (text_view), &insert);
return TRUE;
}
else
return FALSE;
}
static void
gtk_text_view_remove_validate_idles (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (priv->first_validate_idle != 0)
{
DV (g_print ("Removing first validate idle: %s\n", G_STRLOC));
g_source_remove (priv->first_validate_idle);
priv->first_validate_idle = 0;
}
if (priv->incremental_validate_idle != 0)
{
g_source_remove (priv->incremental_validate_idle);
priv->incremental_validate_idle = 0;
}
}
static void
gtk_text_view_dispose (GObject *object)
{
GtkTextView *text_view = GTK_TEXT_VIEW (object);
GtkTextViewPrivate *priv = text_view->priv;
GtkWidget *child;
child = g_object_get_data (object, "gtk-emoji-chooser");
if (child)
{
gtk_widget_unparent (child);
g_object_set_data (object, "gtk-emoji-chooser", NULL);
}
gtk_text_view_remove_validate_idles (text_view);
gtk_text_view_set_buffer (text_view, NULL);
gtk_text_view_destroy_layout (text_view);
if (text_view->priv->scroll_timeout)
{
g_source_remove (text_view->priv->scroll_timeout);
text_view->priv->scroll_timeout = 0;
}
if (priv->im_spot_idle)
{
g_source_remove (priv->im_spot_idle);
priv->im_spot_idle = 0;
}
if (priv->magnifier)
_gtk_magnifier_set_inspected (GTK_MAGNIFIER (priv->magnifier), NULL);
g_clear_pointer ((GtkWidget **) &priv->text_handles[TEXT_HANDLE_CURSOR], gtk_widget_unparent);
g_clear_pointer ((GtkWidget **) &priv->text_handles[TEXT_HANDLE_SELECTION_BOUND], gtk_widget_unparent);
g_clear_pointer (&priv->selection_bubble, gtk_widget_unparent);
g_clear_pointer (&priv->magnifier_popover, gtk_widget_unparent);
while ((child = gtk_widget_get_first_child (GTK_WIDGET (text_view))))
gtk_text_view_remove (text_view, child);
G_OBJECT_CLASS (gtk_text_view_parent_class)->dispose (object);
}
static void
gtk_text_view_finalize (GObject *object)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (object);
priv = text_view->priv;
gtk_text_view_destroy_layout (text_view);
gtk_text_view_set_buffer (text_view, NULL);
/* at this point, no "notify::buffer" handler should recreate the buffer. */
g_assert (priv->buffer == NULL);
/* Ensure all children were removed */
g_assert (priv->anchored_children.length == 0);
g_assert (priv->left_child == NULL);
g_assert (priv->right_child == NULL);
g_assert (priv->top_child == NULL);
g_assert (priv->bottom_child == NULL);
g_assert (priv->center_child == NULL);
cancel_pending_scroll (text_view);
if (priv->tabs)
pango_tab_array_free (priv->tabs);
if (priv->hadjustment)
g_object_unref (priv->hadjustment);
if (priv->vadjustment)
g_object_unref (priv->vadjustment);
text_window_free (priv->text_window);
g_object_unref (priv->im_context);
g_free (priv->im_module);
g_clear_pointer (&priv->popup_menu, gtk_widget_unparent);
g_clear_object (&priv->extra_menu);
G_OBJECT_CLASS (gtk_text_view_parent_class)->finalize (object);
}
static void
gtk_text_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (object);
priv = text_view->priv;
switch (prop_id)
{
case PROP_PIXELS_ABOVE_LINES:
gtk_text_view_set_pixels_above_lines (text_view, g_value_get_int (value));
break;
case PROP_PIXELS_BELOW_LINES:
gtk_text_view_set_pixels_below_lines (text_view, g_value_get_int (value));
break;
case PROP_PIXELS_INSIDE_WRAP:
gtk_text_view_set_pixels_inside_wrap (text_view, g_value_get_int (value));
break;
case PROP_EDITABLE:
gtk_text_view_set_editable (text_view, g_value_get_boolean (value));
break;
case PROP_WRAP_MODE:
gtk_text_view_set_wrap_mode (text_view, g_value_get_enum (value));
break;
case PROP_JUSTIFICATION:
gtk_text_view_set_justification (text_view, g_value_get_enum (value));
break;
case PROP_LEFT_MARGIN:
gtk_text_view_set_left_margin (text_view, g_value_get_int (value));
break;
case PROP_RIGHT_MARGIN:
gtk_text_view_set_right_margin (text_view, g_value_get_int (value));
break;
case PROP_TOP_MARGIN:
gtk_text_view_set_top_margin (text_view, g_value_get_int (value));
break;
case PROP_BOTTOM_MARGIN:
gtk_text_view_set_bottom_margin (text_view, g_value_get_int (value));
break;
case PROP_INDENT:
gtk_text_view_set_indent (text_view, g_value_get_int (value));
break;
case PROP_TABS:
gtk_text_view_set_tabs (text_view, g_value_get_boxed (value));
break;
case PROP_CURSOR_VISIBLE:
gtk_text_view_set_cursor_visible (text_view, g_value_get_boolean (value));
break;
case PROP_OVERWRITE:
gtk_text_view_set_overwrite (text_view, g_value_get_boolean (value));
break;
case PROP_BUFFER:
gtk_text_view_set_buffer (text_view, GTK_TEXT_BUFFER (g_value_get_object (value)));
break;
case PROP_ACCEPTS_TAB:
gtk_text_view_set_accepts_tab (text_view, g_value_get_boolean (value));
break;
case PROP_IM_MODULE:
g_free (priv->im_module);
priv->im_module = g_value_dup_string (value);
if (GTK_IS_IM_MULTICONTEXT (priv->im_context))
gtk_im_multicontext_set_context_id (GTK_IM_MULTICONTEXT (priv->im_context), priv->im_module);
break;
case PROP_HADJUSTMENT:
gtk_text_view_set_hadjustment (text_view, g_value_get_object (value));
break;
case PROP_VADJUSTMENT:
gtk_text_view_set_vadjustment (text_view, g_value_get_object (value));
break;
case PROP_HSCROLL_POLICY:
if (priv->hscroll_policy != g_value_get_enum (value))
{
priv->hscroll_policy = g_value_get_enum (value);
gtk_widget_queue_resize (GTK_WIDGET (text_view));
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_VSCROLL_POLICY:
if (priv->vscroll_policy != g_value_get_enum (value))
{
priv->vscroll_policy = g_value_get_enum (value);
gtk_widget_queue_resize (GTK_WIDGET (text_view));
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_INPUT_PURPOSE:
gtk_text_view_set_input_purpose (text_view, g_value_get_enum (value));
break;
case PROP_INPUT_HINTS:
gtk_text_view_set_input_hints (text_view, g_value_get_flags (value));
break;
case PROP_MONOSPACE:
gtk_text_view_set_monospace (text_view, g_value_get_boolean (value));
break;
case PROP_EXTRA_MENU:
gtk_text_view_set_extra_menu (text_view, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_text_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (object);
priv = text_view->priv;
switch (prop_id)
{
case PROP_PIXELS_ABOVE_LINES:
g_value_set_int (value, priv->pixels_above_lines);
break;
case PROP_PIXELS_BELOW_LINES:
g_value_set_int (value, priv->pixels_below_lines);
break;
case PROP_PIXELS_INSIDE_WRAP:
g_value_set_int (value, priv->pixels_inside_wrap);
break;
case PROP_EDITABLE:
g_value_set_boolean (value, priv->editable);
break;
case PROP_WRAP_MODE:
g_value_set_enum (value, priv->wrap_mode);
break;
case PROP_JUSTIFICATION:
g_value_set_enum (value, priv->justify);
break;
case PROP_LEFT_MARGIN:
g_value_set_int (value, priv->left_margin);
break;
case PROP_RIGHT_MARGIN:
g_value_set_int (value, priv->right_margin);
break;
case PROP_TOP_MARGIN:
g_value_set_int (value, priv->top_margin);
break;
case PROP_BOTTOM_MARGIN:
g_value_set_int (value, priv->bottom_margin);
break;
case PROP_INDENT:
g_value_set_int (value, priv->indent);
break;
case PROP_TABS:
g_value_set_boxed (value, priv->tabs);
break;
case PROP_CURSOR_VISIBLE:
g_value_set_boolean (value, priv->cursor_visible);
break;
case PROP_BUFFER:
g_value_set_object (value, get_buffer (text_view));
break;
case PROP_OVERWRITE:
g_value_set_boolean (value, priv->overwrite_mode);
break;
case PROP_ACCEPTS_TAB:
g_value_set_boolean (value, priv->accepts_tab);
break;
case PROP_IM_MODULE:
g_value_set_string (value, priv->im_module);
break;
case PROP_HADJUSTMENT:
g_value_set_object (value, priv->hadjustment);
break;
case PROP_VADJUSTMENT:
g_value_set_object (value, priv->vadjustment);
break;
case PROP_HSCROLL_POLICY:
g_value_set_enum (value, priv->hscroll_policy);
break;
case PROP_VSCROLL_POLICY:
g_value_set_enum (value, priv->vscroll_policy);
break;
case PROP_INPUT_PURPOSE:
g_value_set_enum (value, gtk_text_view_get_input_purpose (text_view));
break;
case PROP_INPUT_HINTS:
g_value_set_flags (value, gtk_text_view_get_input_hints (text_view));
break;
case PROP_MONOSPACE:
g_value_set_boolean (value, gtk_text_view_get_monospace (text_view));
break;
case PROP_EXTRA_MENU:
g_value_set_object (value, gtk_text_view_get_extra_menu (text_view));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_text_view_measure_borders (GtkTextView *text_view,
GtkBorder *border)
{
GtkTextViewPrivate *priv = text_view->priv;
int left = 0;
int right = 0;
int top = 0;
int bottom = 0;
if (priv->left_child)
gtk_widget_measure (GTK_WIDGET (priv->left_child),
GTK_ORIENTATION_HORIZONTAL, -1,
&left, NULL, NULL, NULL);
if (priv->right_child)
gtk_widget_measure (GTK_WIDGET (priv->right_child),
GTK_ORIENTATION_HORIZONTAL, -1,
&right, NULL, NULL, NULL);
if (priv->top_child)
gtk_widget_measure (GTK_WIDGET (priv->top_child),
GTK_ORIENTATION_VERTICAL, -1,
&top, NULL, NULL, NULL);
if (priv->bottom_child)
gtk_widget_measure (GTK_WIDGET (priv->bottom_child),
GTK_ORIENTATION_VERTICAL, -1,
&bottom, NULL, NULL, NULL);
border->left = left;
border->right = right;
border->top = top;
border->bottom = bottom;
}
static void
gtk_text_view_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextViewPrivate *priv = text_view->priv;
const GList *list;
GtkBorder borders;
int min = 0;
int nat = 0;
int extra;
gtk_text_view_measure_borders (text_view, &borders);
if (priv->center_child)
gtk_widget_measure (GTK_WIDGET (priv->center_child),
orientation, for_size,
&min, &nat, NULL, NULL);
for (list = priv->anchored_children.head; list; list = list->next)
{
const AnchoredChild *child = list->data;
int child_min = 0;
int child_nat = 0;
gtk_widget_measure (child->widget, orientation, for_size,
&child_min, &child_nat,
NULL, NULL);
/* Invalidate layout lines if required */
if (child->anchor && priv->layout)
gtk_text_child_anchor_queue_resize (child->anchor, priv->layout);
min = MAX (min, child_min);
nat = MAX (nat, child_nat);
}
if (orientation == GTK_ORIENTATION_HORIZONTAL)
extra = borders.left + priv->left_margin + priv->right_margin + borders.right;
else
extra = borders.top + priv->height + borders.bottom;
*minimum = min + extra;
*natural = nat + extra;
}
static void
gtk_text_view_compute_child_allocation (GtkTextView *text_view,
const AnchoredChild *vc,
GtkAllocation *allocation,
int gutter_width,
int gutter_height)
{
int buffer_y;
GtkTextIter iter;
GtkRequisition req;
gtk_text_buffer_get_iter_at_child_anchor (get_buffer (text_view),
&iter,
vc->anchor);
gtk_text_layout_get_line_yrange (text_view->priv->layout, &iter,
&buffer_y, NULL);
buffer_y += vc->from_top_of_line;
allocation->x = vc->from_left_of_buffer - text_view->priv->xoffset + gutter_width;
allocation->y = buffer_y - text_view->priv->yoffset + gutter_height;
gtk_widget_get_preferred_size (vc->widget, &req, NULL);
allocation->width = req.width;
allocation->height = req.height;
}
static void
gtk_text_view_update_child_allocation (GtkTextView *text_view,
const AnchoredChild *vc,
int gutter_width,
int gutter_height)
{
GtkAllocation allocation;
gtk_text_view_compute_child_allocation (text_view, vc, &allocation, gutter_width, gutter_height);
gtk_widget_size_allocate (vc->widget, &allocation, -1);
#if 0
g_print ("allocation for %p allocated to %d,%d yoffset = %d\n",
vc->widget,
vc->widget->allocation.x,
vc->widget->allocation.y,
text_view->priv->yoffset);
#endif
}
static void
calculate_gutter_offsets (GtkTextView *text_view,
int *width,
int *height)
{
GtkWidget *x_gutter;
GtkWidget *y_gutter;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (width != NULL && height != NULL);
x_gutter = gtk_text_view_get_gutter (text_view, GTK_TEXT_WINDOW_LEFT);
if (x_gutter != NULL)
{
GtkRequisition x_req = {0};
gtk_widget_get_preferred_size (x_gutter, &x_req, NULL);
*width = x_req.width;
}
else
{
*width = 0;
}
y_gutter = gtk_text_view_get_gutter (text_view, GTK_TEXT_WINDOW_TOP);
if (y_gutter != NULL)
{
GtkRequisition y_req = {0};
gtk_widget_get_preferred_size (y_gutter, &y_req, NULL);
*height = y_req.height;
}
else
{
*height = 0;
}
}
static void
gtk_anchored_child_allocated (GtkTextLayout *layout,
GtkWidget *child,
int x,
int y,
gpointer data)
{
AnchoredChild *vc = NULL;
GtkTextView *text_view = data;
int x_offset = 0;
int y_offset = 0;
calculate_gutter_offsets (text_view, &x_offset, &y_offset);
/* x,y is the position of the child from the top of the line, and
* from the left of the buffer. We have to translate that into text
* window coordinates, then size_allocate the child.
*/
vc = g_object_get_qdata (G_OBJECT (child), quark_text_view_child);
g_assert (vc != NULL);
DV (g_print ("child allocated at %d,%d\n", x, y));
vc->from_left_of_buffer = x;
vc->from_top_of_line = y;
gtk_text_view_update_child_allocation (text_view, vc, x_offset, y_offset);
}
static void
gtk_text_view_allocate_children (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
const GList *iter;
DV(g_print(G_STRLOC"\n"));
for (iter = priv->anchored_children.head; iter; iter = iter->next)
{
const AnchoredChild *child = iter->data;
GtkTextIter child_loc;
GtkRequisition child_req;
GtkAllocation allocation;
/* We need to force-validate the regions containing children. */
gtk_text_buffer_get_iter_at_child_anchor (get_buffer (text_view),
&child_loc,
child->anchor);
/* Since anchored children are only ever allocated from
* gtk_text_layout_get_line_display() we have to make sure
* that the display line caching in the layout doesn't
* get in the way. Invalidating the layout around the anchor
* achieves this.
*/
if (_gtk_widget_get_alloc_needed (child->widget))
{
GtkTextIter end = child_loc;
gtk_text_iter_forward_char (&end);
gtk_text_layout_invalidate (priv->layout, &child_loc, &end);
}
gtk_text_layout_validate_yrange (priv->layout, &child_loc, 0, 1);
gtk_widget_get_preferred_size (child->widget, &child_req, NULL);
allocation.x = - child_req.width;
allocation.y = - child_req.height;
allocation.width = child_req.width;
allocation.height = child_req.height;
gtk_widget_size_allocate (child->widget, &allocation, -1);
}
}
static GtkTextViewChild **
find_child_for_window_type (GtkTextView *text_view,
GtkTextWindowType window_type)
{
switch (window_type)
{
case GTK_TEXT_WINDOW_LEFT:
return &text_view->priv->left_child;
case GTK_TEXT_WINDOW_RIGHT:
return &text_view->priv->right_child;
case GTK_TEXT_WINDOW_TOP:
return &text_view->priv->top_child;
case GTK_TEXT_WINDOW_BOTTOM:
return &text_view->priv->bottom_child;
case GTK_TEXT_WINDOW_TEXT:
return &text_view->priv->center_child;
case GTK_TEXT_WINDOW_WIDGET:
default:
return NULL;
}
}
/**
* gtk_text_view_get_gutter:
* @text_view: a `GtkTextView`
* @win: a `GtkTextWindowType`
*
* Gets a `GtkWidget` that has previously been set as gutter.
*
* See [method@Gtk.TextView.set_gutter].
*
* @win must be one of %GTK_TEXT_WINDOW_LEFT, %GTK_TEXT_WINDOW_RIGHT,
* %GTK_TEXT_WINDOW_TOP, or %GTK_TEXT_WINDOW_BOTTOM.
*
* Returns: (transfer none) (nullable): a `GtkWidget`
*/
GtkWidget *
gtk_text_view_get_gutter (GtkTextView *text_view,
GtkTextWindowType win)
{
GtkTextViewChild **childp;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
g_return_val_if_fail (win == GTK_TEXT_WINDOW_LEFT ||
win == GTK_TEXT_WINDOW_RIGHT ||
win == GTK_TEXT_WINDOW_TOP ||
win == GTK_TEXT_WINDOW_BOTTOM, NULL);
childp = find_child_for_window_type (text_view, win);
if (childp != NULL && *childp != NULL)
return GTK_WIDGET (*childp);
return NULL;
}
/**
* gtk_text_view_set_gutter:
* @text_view: a `GtkTextView`
* @win: a `GtkTextWindowType`
* @widget: (nullable): a `GtkWidget`
*
* Places @widget into the gutter specified by @win.
*
* @win must be one of %GTK_TEXT_WINDOW_LEFT, %GTK_TEXT_WINDOW_RIGHT,
* %GTK_TEXT_WINDOW_TOP, or %GTK_TEXT_WINDOW_BOTTOM.
*/
void
gtk_text_view_set_gutter (GtkTextView *text_view,
GtkTextWindowType win,
GtkWidget *widget)
{
GtkTextViewChild **childp;
GtkTextViewChild *old_child;
GtkTextViewChild *new_child;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
g_return_if_fail (win == GTK_TEXT_WINDOW_LEFT ||
win == GTK_TEXT_WINDOW_RIGHT ||
win == GTK_TEXT_WINDOW_TOP ||
win == GTK_TEXT_WINDOW_BOTTOM);
childp = find_child_for_window_type (text_view, win);
if (childp == NULL)
return;
old_child = *childp;
if ((GtkWidget *)old_child == widget)
return;
if (old_child != NULL)
{
*childp = NULL;
gtk_widget_unparent (GTK_WIDGET (old_child));
g_object_unref (old_child);
}
if (widget == NULL)
return;
new_child = GTK_TEXT_VIEW_CHILD (gtk_text_view_child_new (win));
gtk_text_view_child_add (new_child, widget);
*childp = g_object_ref (new_child);
gtk_widget_set_parent (GTK_WIDGET (new_child), GTK_WIDGET (text_view));
update_node_ordering (GTK_WIDGET (text_view));
}
static void
gtk_text_view_size_allocate (GtkWidget *widget,
int widget_width,
int widget_height,
int baseline)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
int width, height;
GdkRectangle text_rect;
GdkRectangle left_rect;
GdkRectangle right_rect;
GdkRectangle top_rect;
GdkRectangle bottom_rect;
GtkWidget *chooser;
PangoLayout *layout;
guint mru_size;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
DV(g_print(G_STRLOC"\n"));
gtk_text_view_measure_borders (text_view, &priv->border_window_size);
/* distribute width/height among child windows. Ensure all
* windows get at least a 1x1 allocation.
*/
left_rect.width = priv->border_window_size.left;
right_rect.width = priv->border_window_size.right;
width = widget_width - left_rect.width - right_rect.width;
text_rect.width = MAX (1, width);
top_rect.width = text_rect.width;
bottom_rect.width = text_rect.width;
top_rect.height = priv->border_window_size.top;
bottom_rect.height = priv->border_window_size.bottom;
height = widget_height - top_rect.height - bottom_rect.height;
text_rect.height = MAX (1, height);
left_rect.height = text_rect.height;
right_rect.height = text_rect.height;
/* Origins */
left_rect.x = 0;
top_rect.y = 0;
text_rect.x = left_rect.x + left_rect.width;
text_rect.y = top_rect.y + top_rect.height;
left_rect.y = text_rect.y;
right_rect.y = text_rect.y;
top_rect.x = text_rect.x;
bottom_rect.x = text_rect.x;
right_rect.x = text_rect.x + text_rect.width;
bottom_rect.y = text_rect.y + text_rect.height;
text_window_size_allocate (priv->text_window, &text_rect);
if (priv->center_child)
{
gtk_text_view_child_set_offset (priv->center_child, priv->xoffset, priv->yoffset);
gtk_widget_size_allocate (GTK_WIDGET (priv->center_child), &text_rect, -1);
}
if (priv->left_child)
{
gtk_text_view_child_set_offset (priv->left_child, priv->xoffset, priv->yoffset);
gtk_widget_size_allocate (GTK_WIDGET (priv->left_child), &left_rect, -1);
}
if (priv->right_child)
{
gtk_text_view_child_set_offset (priv->right_child, priv->xoffset, priv->yoffset);
gtk_widget_size_allocate (GTK_WIDGET (priv->right_child), &right_rect, -1);
}
if (priv->top_child)
{
gtk_text_view_child_set_offset (priv->top_child, priv->xoffset, priv->yoffset);
gtk_widget_size_allocate (GTK_WIDGET (priv->top_child), &top_rect, -1);
}
if (priv->bottom_child)
{
gtk_text_view_child_set_offset (priv->bottom_child, priv->xoffset, priv->yoffset);
gtk_widget_size_allocate (GTK_WIDGET (priv->bottom_child), &bottom_rect, -1);
}
gtk_text_view_update_layout_width (text_view);
/* Note that this will do some layout validation */
gtk_text_view_allocate_children (text_view);
/* Update adjustments */
if (!gtk_adjustment_is_animating (priv->hadjustment))
gtk_text_view_set_hadjustment_values (text_view);
if (!gtk_adjustment_is_animating (priv->vadjustment))
gtk_text_view_set_vadjustment_values (text_view);
/* Optimize display cache size */
layout = gtk_widget_create_pango_layout (widget, "X");
pango_layout_get_pixel_size (layout, &width, &height);
if (height > 0)
{
mru_size = SCREEN_HEIGHT (widget) / height * 3;
gtk_text_layout_set_mru_size (priv->layout, mru_size);
}
g_object_unref (layout);
/* The GTK resize loop processes all the pending exposes right
* after doing the resize stuff, so the idle sizer won't have a
* chance to run. So we do the work here.
*/
gtk_text_view_flush_first_validate (text_view);
chooser = g_object_get_data (G_OBJECT (text_view), "gtk-emoji-chooser");
if (chooser)
gtk_popover_present (GTK_POPOVER (chooser));
if (priv->magnifier_popover)
gtk_popover_present (GTK_POPOVER (priv->magnifier_popover));
if (priv->popup_menu)
gtk_popover_present (GTK_POPOVER (priv->popup_menu));
if (priv->text_handles[TEXT_HANDLE_CURSOR])
gtk_text_handle_present (priv->text_handles[TEXT_HANDLE_CURSOR]);
if (priv->text_handles[TEXT_HANDLE_SELECTION_BOUND])
gtk_text_handle_present (priv->text_handles[TEXT_HANDLE_SELECTION_BOUND]);
if (priv->selection_bubble)
gtk_popover_present (GTK_POPOVER (priv->selection_bubble));
}
static void
gtk_text_view_get_first_para_iter (GtkTextView *text_view,
GtkTextIter *iter)
{
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), iter,
text_view->priv->first_para_mark);
}
static void
gtk_text_view_validate_onscreen (GtkTextView *text_view)
{
GtkWidget *widget;
GtkTextViewPrivate *priv;
widget = GTK_WIDGET (text_view);
priv = text_view->priv;
DV(g_print(">Validating onscreen ("G_STRLOC")\n"));
if (SCREEN_HEIGHT (widget) > 0)
{
GtkTextIter first_para;
/* Be sure we've validated the stuff onscreen; if we
* scrolled, these calls won't have any effect, because
* they were called in the recursive validate_onscreen
*/
gtk_text_view_get_first_para_iter (text_view, &first_para);
gtk_text_layout_validate_yrange (priv->layout,
&first_para,
0,
priv->first_para_pixels +
SCREEN_HEIGHT (widget));
}
priv->onscreen_validated = TRUE;
DV(g_print(">Done validating onscreen, onscreen_validated = TRUE ("G_STRLOC")\n"));
/* This can have the odd side effect of triggering a scroll, which should
* flip "onscreen_validated" back to FALSE, but should also get us
* back into this function to turn it on again.
*/
gtk_text_view_update_adjustments (text_view);
g_assert (priv->onscreen_validated);
}
static void
gtk_text_view_flush_first_validate (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (priv->first_validate_idle == 0)
return;
/* Do this first, which means that if an "invalidate"
* occurs during any of this process, a new first_validate_callback
* will be installed, and we'll start again.
*/
DV (g_print ("removing first validate in %s\n", G_STRLOC));
g_source_remove (priv->first_validate_idle);
priv->first_validate_idle = 0;
/* be sure we have up-to-date screen size set on the
* layout.
*/
gtk_text_view_update_layout_width (text_view);
/* Bail out if we invalidated stuff; scrolling right away will just
* confuse the issue.
*/
if (priv->first_validate_idle != 0)
{
DV(g_print(">Width change forced requeue ("G_STRLOC")\n"));
}
else
{
/* scroll to any marks, if that's pending. This can jump us to
* the validation codepath used for scrolling onscreen, if so we
* bail out. It won't jump if already in that codepath since
* value_changed is not recursive, so also validate if
* necessary.
*/
if (!gtk_text_view_flush_scroll (text_view) ||
!priv->onscreen_validated)
gtk_text_view_validate_onscreen (text_view);
DV(g_print(">Leaving first validate idle ("G_STRLOC")\n"));
g_assert (priv->onscreen_validated);
}
}
static gboolean
first_validate_callback (gpointer data)
{
GtkTextView *text_view = data;
/* Note that some of this code is duplicated at the end of size_allocate,
* keep in sync with that.
*/
DV(g_print(G_STRLOC"\n"));
gtk_text_view_flush_first_validate (text_view);
return FALSE;
}
static gboolean
incremental_validate_callback (gpointer data)
{
GtkTextView *text_view = data;
gboolean result = TRUE;
DV(g_print(G_STRLOC"\n"));
gtk_text_layout_validate (text_view->priv->layout, 2000);
gtk_text_view_update_adjustments (text_view);
if (gtk_text_layout_is_valid (text_view->priv->layout))
{
text_view->priv->incremental_validate_idle = 0;
result = FALSE;
}
return result;
}
static void
gtk_text_view_invalidate (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
DV (g_print (">Invalidate, onscreen_validated = %d now FALSE ("G_STRLOC")\n",
priv->onscreen_validated));
priv->onscreen_validated = FALSE;
/* We'll invalidate when the layout is created */
if (priv->layout == NULL)
return;
if (!priv->first_validate_idle)
{
priv->first_validate_idle = g_idle_add_full (GTK_PRIORITY_RESIZE - 2, first_validate_callback, text_view, NULL);
gdk_source_set_static_name_by_id (priv->first_validate_idle, "[gtk] first_validate_callback");
DV (g_print (G_STRLOC": adding first validate idle %d\n",
priv->first_validate_idle));
}
if (!priv->incremental_validate_idle)
{
priv->incremental_validate_idle = g_idle_add_full (GTK_TEXT_VIEW_PRIORITY_VALIDATE, incremental_validate_callback, text_view, NULL);
gdk_source_set_static_name_by_id (priv->incremental_validate_idle, "[gtk] incremental_validate_callback");
DV (g_print (G_STRLOC": adding incremental validate idle %d\n",
priv->incremental_validate_idle));
}
}
static void
invalidated_handler (GtkTextLayout *layout,
gpointer data)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (data);
DV (g_print ("Invalidating due to layout invalidate signal\n"));
gtk_text_view_invalidate (text_view);
}
static void
changed_handler (GtkTextLayout *layout,
int start_y,
int old_height,
int new_height,
gpointer data)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkWidget *widget;
text_view = GTK_TEXT_VIEW (data);
priv = text_view->priv;
widget = GTK_WIDGET (data);
DV(g_print(">Lines Validated ("G_STRLOC")\n"));
if (gtk_widget_get_realized (widget))
{
gtk_widget_queue_draw (widget);
queue_update_im_spot_location (text_view);
}
if (old_height != new_height)
{
const GList *iter;
GtkTextIter first;
int new_first_para_top;
int old_first_para_top;
int x_offset = 0;
int y_offset = 0;
calculate_gutter_offsets (text_view, &x_offset, &y_offset);
/* If the bottom of the old area was above the top of the
* screen, we need to scroll to keep the current top of the
* screen in place. Remember that first_para_pixels is the
* position of the top of the screen in coordinates relative to
* the first paragraph onscreen.
*
* In short we are adding the height delta of the portion of the
* changed region above first_para_mark to priv->yoffset.
*/
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &first,
priv->first_para_mark);
gtk_text_layout_get_line_yrange (layout, &first, &new_first_para_top, NULL);
old_first_para_top = priv->yoffset - priv->first_para_pixels + priv->top_margin;
if (new_first_para_top != old_first_para_top)
{
priv->yoffset += new_first_para_top - old_first_para_top;
gtk_adjustment_set_value (text_view->priv->vadjustment, priv->yoffset);
}
/* FIXME be smarter about which anchored widgets we update */
for (iter = priv->anchored_children.head; iter; iter = iter->next)
{
const AnchoredChild *ac = iter->data;
gtk_text_view_update_child_allocation (text_view, ac, x_offset, y_offset);
}
gtk_widget_queue_resize (widget);
}
}
static void
gtk_text_view_realize (GtkWidget *widget)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
GTK_WIDGET_CLASS (gtk_text_view_parent_class)->realize (widget);
if (gtk_widget_is_sensitive (widget))
{
gtk_im_context_set_client_widget (GTK_TEXT_VIEW (widget)->priv->im_context,
widget);
}
gtk_text_view_ensure_layout (text_view);
gtk_text_view_invalidate (text_view);
if (priv->buffer)
{
GdkClipboard *clipboard = gtk_widget_get_primary_clipboard (GTK_WIDGET (text_view));
gtk_text_buffer_add_selection_clipboard (priv->buffer, clipboard);
}
/* Ensure updating the spot location. */
gtk_text_view_update_im_spot_location (text_view);
}
static void
gtk_text_view_unrealize (GtkWidget *widget)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
if (priv->buffer)
{
GdkClipboard *clipboard = gtk_widget_get_primary_clipboard (GTK_WIDGET (text_view));
gtk_text_buffer_remove_selection_clipboard (priv->buffer, clipboard);
}
gtk_text_view_remove_validate_idles (text_view);
g_clear_pointer (&priv->popup_menu, gtk_widget_unparent);
gtk_im_context_set_client_widget (priv->im_context, NULL);
GTK_WIDGET_CLASS (gtk_text_view_parent_class)->unrealize (widget);
}
static void
gtk_text_view_map (GtkWidget *widget)
{
gtk_widget_set_cursor_from_name (widget, "text");
GTK_WIDGET_CLASS (gtk_text_view_parent_class)->map (widget);
}
static void
gtk_text_view_css_changed (GtkWidget *widget,
GtkCssStyleChange *change)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
GTK_WIDGET_CLASS (gtk_text_view_parent_class)->css_changed (widget, change);
if ((change == NULL ||
gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_TEXT |
GTK_CSS_AFFECTS_TEXT_ATTRS |
GTK_CSS_AFFECTS_BACKGROUND |
GTK_CSS_AFFECTS_CONTENT)) &&
priv->layout && priv->layout->default_style)
{
gtk_text_view_set_attributes_from_style (text_view,
priv->layout->default_style);
gtk_text_layout_default_style_changed (priv->layout);
}
if ((change == NULL ||
gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_TEXT)) &&
priv->layout)
{
gtk_text_view_update_pango_contexts (text_view);
}
}
static void
gtk_text_view_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction)
{
GtkTextViewPrivate *priv = GTK_TEXT_VIEW (widget)->priv;
if (priv->layout && priv->layout->default_style)
{
priv->layout->default_style->direction = gtk_widget_get_direction (widget);
gtk_text_layout_default_style_changed (priv->layout);
}
}
static void
gtk_text_view_update_pango_contexts (GtkTextView *text_view)
{
GtkWidget *widget = GTK_WIDGET (text_view);
GtkTextViewPrivate *priv = text_view->priv;
gboolean update_ltr, update_rtl;
if (!priv->layout)
return;
update_ltr = gtk_widget_update_pango_context (widget, priv->layout->ltr_context, GTK_TEXT_DIR_LTR);
update_rtl = gtk_widget_update_pango_context (widget, priv->layout->rtl_context, GTK_TEXT_DIR_RTL);
if (update_ltr || update_rtl)
{
GtkTextIter start, end;
gtk_text_buffer_get_bounds (get_buffer (text_view), &start, &end);
gtk_text_layout_invalidate (priv->layout, &start, &end);
gtk_widget_queue_draw (widget);
}
}
static void
gtk_text_view_system_setting_changed (GtkWidget *widget,
GtkSystemSetting setting)
{
if (setting == GTK_SYSTEM_SETTING_DPI ||
setting == GTK_SYSTEM_SETTING_FONT_NAME ||
setting == GTK_SYSTEM_SETTING_FONT_CONFIG)
{
gtk_text_view_update_pango_contexts (GTK_TEXT_VIEW (widget));
}
}
static void
gtk_text_view_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextViewPrivate *priv = text_view->priv;
GtkStateFlags state;
if (!gtk_widget_is_sensitive (widget))
{
/* Clear any selection */
gtk_text_view_unselect (text_view);
}
state = gtk_widget_get_state_flags (widget);
gtk_css_node_set_state (priv->text_window->css_node, state);
state &= ~GTK_STATE_FLAG_DROP_ACTIVE;
gtk_css_node_set_state (priv->selection_node, state);
if (priv->layout)
gtk_text_layout_invalidate_selection (priv->layout);
gtk_widget_queue_draw (widget);
}
static void
gtk_text_view_obscure_mouse_cursor (GtkTextView *text_view)
{
GdkDisplay *display;
GdkSeat *seat;
GdkDevice *device;
if (text_view->priv->mouse_cursor_obscured)
return;
gtk_widget_set_cursor_from_name (GTK_WIDGET (text_view), "none");
display = gtk_widget_get_display (GTK_WIDGET (text_view));
seat = gdk_display_get_default_seat (display);
device = gdk_seat_get_pointer (seat);
text_view->priv->obscured_cursor_timestamp = gdk_device_get_timestamp (device);
text_view->priv->mouse_cursor_obscured = TRUE;
}
static void
gtk_text_view_unobscure_mouse_cursor (GtkTextView *text_view)
{
GdkDisplay *display;
GdkSeat *seat;
GdkDevice *device;
display = gtk_widget_get_display (GTK_WIDGET (text_view));
seat = gdk_display_get_default_seat (display);
device = gdk_seat_get_pointer (seat);
if (text_view->priv->mouse_cursor_obscured &&
gdk_device_get_timestamp (device) != text_view->priv->obscured_cursor_timestamp)
{
gtk_widget_set_cursor_from_name (GTK_WIDGET (text_view), "text");
text_view->priv->mouse_cursor_obscured = FALSE;
}
}
/*
* Events
*/
static void
_text_window_to_widget_coords (GtkTextView *text_view,
int *x,
int *y)
{
GtkTextViewPrivate *priv = text_view->priv;
(*x) += priv->border_window_size.left;
(*y) += priv->border_window_size.top;
}
static void
_widget_to_text_surface_coords (GtkTextView *text_view,
int *x,
int *y)
{
GtkTextViewPrivate *priv = text_view->priv;
(*x) -= priv->border_window_size.left;
(*y) -= priv->border_window_size.top;
}
static void
gtk_text_view_set_handle_position (GtkTextView *text_view,
GtkTextHandle *handle,
GtkTextIter *iter)
{
GtkTextViewPrivate *priv;
GdkRectangle rect;
int x, y;
priv = text_view->priv;
gtk_text_view_get_cursor_locations (text_view, iter, &rect, NULL);
x = rect.x - priv->xoffset;
y = rect.y - priv->yoffset;
if (!gtk_text_handle_get_is_dragged (handle) &&
(x < 0 || x > SCREEN_WIDTH (text_view) ||
y < 0 || y > SCREEN_HEIGHT (text_view)))
{
/* Hide the handle if it's not being manipulated
* and fell outside of the visible text area.
*/
gtk_widget_hide (GTK_WIDGET (handle));
}
else
{
GtkTextDirection dir = GTK_TEXT_DIR_LTR;
GtkTextAttributes attributes = { 0 };
gtk_widget_show (GTK_WIDGET (handle));
rect.x = CLAMP (x, 0, SCREEN_WIDTH (text_view));
rect.y = CLAMP (y, 0, SCREEN_HEIGHT (text_view));
_text_window_to_widget_coords (text_view, &rect.x, &rect.y);
gtk_text_handle_set_position (handle, &rect);
if (gtk_text_iter_get_attributes (iter, &attributes))
dir = attributes.direction;
gtk_widget_set_direction (GTK_WIDGET (handle), dir);
}
}
static void
gtk_text_view_show_magnifier (GtkTextView *text_view,
GtkTextIter *iter,
int x,
int y)
{
cairo_rectangle_int_t rect;
GtkTextViewPrivate *priv;
GtkAllocation allocation;
GtkRequisition req;
#define N_LINES 1
gtk_widget_get_allocation (GTK_WIDGET (text_view), &allocation);
priv = text_view->priv;
_gtk_text_view_ensure_magnifier (text_view);
/* Set size/content depending on iter rect */
gtk_text_view_get_iter_location (text_view, iter,
(GdkRectangle *) &rect);
rect.x = x + priv->xoffset;
gtk_text_view_buffer_to_window_coords (text_view, GTK_TEXT_WINDOW_TEXT,
rect.x, rect.y, &rect.x, &rect.y);
_text_window_to_widget_coords (text_view, &rect.x, &rect.y);
req.height = rect.height * N_LINES *
_gtk_magnifier_get_magnification (GTK_MAGNIFIER (priv->magnifier));
req.width = MAX ((req.height * 4) / 3, 80);
gtk_widget_set_size_request (priv->magnifier, req.width, req.height);
_gtk_magnifier_set_coords (GTK_MAGNIFIER (priv->magnifier),
rect.x, rect.y + rect.height / 2);
rect.x = CLAMP (rect.x, 0, allocation.width);
rect.y += rect.height / 4;
rect.height -= rect.height / 4;
gtk_popover_set_pointing_to (GTK_POPOVER (priv->magnifier_popover),
&rect);
gtk_popover_popup (GTK_POPOVER (priv->magnifier_popover));
#undef N_LINES
}
static void
gtk_text_view_handle_dragged (GtkTextHandle *handle,
int x,
int y,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
GtkTextIter cursor, bound, iter, *old_iter;
GtkTextBuffer *buffer;
priv = text_view->priv;
buffer = get_buffer (text_view);
_widget_to_text_surface_coords (text_view, &x, &y);
gtk_text_view_selection_bubble_popup_unset (text_view);
gtk_text_layout_get_iter_at_pixel (priv->layout, &iter,
x + priv->xoffset,
y + priv->yoffset);
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_get_iter_at_mark (buffer, &bound,
gtk_text_buffer_get_selection_bound (buffer));
if (handle == priv->text_handles[TEXT_HANDLE_CURSOR])
{
/* Avoid running past the other handle in selection mode */
if (gtk_text_iter_compare (&iter, &bound) >= 0 &&
gtk_widget_is_visible (GTK_WIDGET (priv->text_handles[TEXT_HANDLE_SELECTION_BOUND])))
{
iter = bound;
gtk_text_iter_backward_char (&iter);
}
old_iter = &cursor;
gtk_text_view_set_handle_position (text_view, handle, &iter);
}
else if (handle == priv->text_handles[TEXT_HANDLE_SELECTION_BOUND])
{
/* Avoid running past the other handle */
if (gtk_text_iter_compare (&iter, &cursor) <= 0)
{
iter = cursor;
gtk_text_iter_forward_char (&iter);
}
old_iter = &bound;
gtk_text_view_set_handle_position (text_view, handle, &iter);
}
else
g_assert_not_reached ();
if (gtk_text_iter_compare (&iter, old_iter) != 0)
{
*old_iter = iter;
if (handle == priv->text_handles[TEXT_HANDLE_CURSOR] &&
gtk_text_handle_get_role (priv->text_handles[TEXT_HANDLE_CURSOR]) == GTK_TEXT_HANDLE_ROLE_CURSOR)
gtk_text_buffer_place_cursor (buffer, &cursor);
else
gtk_text_buffer_select_range (buffer, &cursor, &bound);
if (handle == priv->text_handles[TEXT_HANDLE_CURSOR])
{
text_view->priv->cursor_handle_dragged = TRUE;
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (buffer));
}
else if (handle == priv->text_handles[TEXT_HANDLE_SELECTION_BOUND])
{
text_view->priv->selection_handle_dragged = TRUE;
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_selection_bound (buffer));
}
gtk_text_view_update_handles (text_view);
}
gtk_text_view_show_magnifier (text_view, &iter, x, y);
}
static void
gtk_text_view_handle_drag_started (GtkTextHandle *handle,
GtkTextView *text_view)
{
text_view->priv->cursor_handle_dragged = FALSE;
text_view->priv->selection_handle_dragged = FALSE;
}
static void
gtk_text_view_handle_drag_finished (GtkTextHandle *handle,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (!priv->cursor_handle_dragged && !priv->selection_handle_dragged)
{
GtkTextBuffer *buffer;
GtkTextIter cursor, start, end;
GtkSettings *settings;
guint double_click_time;
settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
g_object_get (settings, "gtk-double-click-time", &double_click_time, NULL);
if (g_get_monotonic_time() - priv->handle_place_time < double_click_time * 1000)
{
buffer = get_buffer (text_view);
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
extend_selection (text_view, SELECT_WORDS, &cursor, &start, &end);
gtk_text_buffer_select_range (buffer, &start, &end);
gtk_text_view_update_handles (text_view);
}
else
gtk_text_view_selection_bubble_popup_set (text_view);
}
if (priv->magnifier_popover)
gtk_popover_popdown (GTK_POPOVER (priv->magnifier_popover));
}
static gboolean cursor_visible (GtkTextView *text_view);
static void
gtk_text_view_update_handles (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
GtkTextIter cursor, bound;
GtkTextBuffer *buffer;
if (!priv->text_handles_enabled)
{
if (priv->text_handles[TEXT_HANDLE_CURSOR])
gtk_widget_hide (GTK_WIDGET (priv->text_handles[TEXT_HANDLE_CURSOR]));
if (priv->text_handles[TEXT_HANDLE_SELECTION_BOUND])
gtk_widget_hide (GTK_WIDGET (priv->text_handles[TEXT_HANDLE_SELECTION_BOUND]));
}
else
{
_gtk_text_view_ensure_text_handles (text_view);
buffer = get_buffer (text_view);
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_get_iter_at_mark (buffer, &bound,
gtk_text_buffer_get_selection_bound (buffer));
if (gtk_text_iter_compare (&cursor, &bound) == 0 && priv->editable)
{
/* Cursor mode */
gtk_widget_hide (GTK_WIDGET (priv->text_handles[TEXT_HANDLE_SELECTION_BOUND]));
gtk_text_view_set_handle_position (text_view,
priv->text_handles[TEXT_HANDLE_CURSOR],
&cursor);
gtk_text_handle_set_role (priv->text_handles[TEXT_HANDLE_CURSOR],
GTK_TEXT_HANDLE_ROLE_CURSOR);
}
else if (gtk_text_iter_compare (&cursor, &bound) != 0)
{
/* Selection mode */
gtk_text_view_set_handle_position (text_view,
priv->text_handles[TEXT_HANDLE_CURSOR],
&cursor);
gtk_text_handle_set_role (priv->text_handles[TEXT_HANDLE_CURSOR],
GTK_TEXT_HANDLE_ROLE_SELECTION_START);
gtk_text_view_set_handle_position (text_view,
priv->text_handles[TEXT_HANDLE_SELECTION_BOUND],
&bound);
gtk_text_handle_set_role (priv->text_handles[TEXT_HANDLE_SELECTION_BOUND],
GTK_TEXT_HANDLE_ROLE_SELECTION_END);
}
else
{
gtk_widget_hide (GTK_WIDGET (priv->text_handles[TEXT_HANDLE_CURSOR]));
gtk_widget_hide (GTK_WIDGET (priv->text_handles[TEXT_HANDLE_SELECTION_BOUND]));
}
}
}
static gboolean
gtk_text_view_key_controller_key_pressed (GtkEventControllerKey *controller,
guint keyval,
guint keycode,
GdkModifierType state,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
gboolean retval = FALSE;
priv = text_view->priv;
if (priv->layout == NULL || get_buffer (text_view) == NULL)
return FALSE;
/* Make sure input method knows where it is */
flush_update_im_spot_location (text_view);
/* use overall editability not can_insert, more predictable for users */
if (priv->editable &&
(keyval == GDK_KEY_Return ||
keyval == GDK_KEY_ISO_Enter ||
keyval == GDK_KEY_KP_Enter))
{
/* this won't actually insert the newline if the cursor isn't
* editable
*/
gtk_text_view_reset_im_context (text_view);
gtk_text_view_commit_text (text_view, "\n");
retval = TRUE;
}
/* Pass through Tab as literal tab, unless Control is held down */
else if ((keyval == GDK_KEY_Tab ||
keyval == GDK_KEY_KP_Tab ||
keyval == GDK_KEY_ISO_Left_Tab) &&
!(state & GDK_CONTROL_MASK))
{
/* If the text widget isn't editable overall, or if the application
* has turned off "accepts_tab", move the focus instead
*/
if (priv->accepts_tab && priv->editable)
{
gtk_text_view_reset_im_context (text_view);
gtk_text_view_commit_text (text_view, "\t");
}
else
g_signal_emit_by_name (text_view, "move-focus",
(state & GDK_SHIFT_MASK) ?
GTK_DIR_TAB_BACKWARD : GTK_DIR_TAB_FORWARD);
retval = TRUE;
}
else
retval = FALSE;
gtk_text_view_reset_blink_time (text_view);
gtk_text_view_pend_cursor_blink (text_view);
text_view->priv->text_handles_enabled = FALSE;
gtk_text_view_update_handles (text_view);
gtk_text_view_selection_bubble_popup_unset (text_view);
return retval;
}
static void
gtk_text_view_key_controller_im_update (GtkEventControllerKey *controller,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
priv->need_im_reset = TRUE;
}
static gboolean
get_iter_from_gesture (GtkTextView *text_view,
GtkGesture *gesture,
GtkTextIter *iter,
int *x,
int *y)
{
GdkEventSequence *sequence;
GtkTextViewPrivate *priv;
int xcoord, ycoord;
double px, py;
priv = text_view->priv;
sequence =
gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
if (!gtk_gesture_get_point (gesture, sequence, &px, &py))
return FALSE;
xcoord = px + priv->xoffset;
ycoord = py + priv->yoffset;
_widget_to_text_surface_coords (text_view, &xcoord, &ycoord);
gtk_text_layout_get_iter_at_pixel (priv->layout, iter, xcoord, ycoord);
if (x)
*x = xcoord;
if (y)
*y = ycoord;
return TRUE;
}
static void
gtk_text_view_click_gesture_pressed (GtkGestureClick *gesture,
int n_press,
double x,
double y,
GtkTextView *text_view)
{
GdkEventSequence *sequence;
GtkTextViewPrivate *priv;
GdkEvent *event;
gboolean is_touchscreen;
GdkDevice *device;
GtkTextIter iter;
guint button;
priv = text_view->priv;
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
gtk_widget_grab_focus (GTK_WIDGET (text_view));
gtk_text_view_reset_blink_time (text_view);
device = gdk_event_get_device ((GdkEvent *) event);
is_touchscreen = gtk_simulate_touchscreen () ||
gdk_device_get_source (device) == GDK_SOURCE_TOUCHSCREEN;
if (n_press == 1)
{
/* Always emit reset when preedit is shown */
priv->need_im_reset = TRUE;
gtk_text_view_reset_im_context (text_view);
}
if (n_press == 1 &&
gdk_event_triggers_context_menu (event))
{
gtk_gesture_set_sequence_state (GTK_GESTURE (gesture), sequence,
GTK_EVENT_SEQUENCE_CLAIMED);
gtk_text_view_do_popup (text_view, event);
}
else if (button == GDK_BUTTON_MIDDLE &&
get_middle_click_paste (text_view))
{
gtk_gesture_set_sequence_state (GTK_GESTURE (gesture), sequence,
GTK_EVENT_SEQUENCE_CLAIMED);
get_iter_from_gesture (text_view, GTK_GESTURE (gesture),
&iter, NULL, NULL);
gtk_text_buffer_paste_clipboard (get_buffer (text_view),
gtk_widget_get_primary_clipboard (GTK_WIDGET (text_view)),
&iter,
priv->editable);
}
else if (button == GDK_BUTTON_PRIMARY)
{
gboolean extends = FALSE;
GdkModifierType state;
state = gdk_event_get_modifier_state (event);
if (state & GDK_SHIFT_MASK)
extends = TRUE;
switch (n_press)
{
case 1:
{
/* If we're in the selection, start a drag copy/move of the
* selection; otherwise, start creating a new selection.
*/
GtkTextIter start, end;
priv->text_handles_enabled = is_touchscreen;
get_iter_from_gesture (text_view, GTK_GESTURE (gesture),
&iter, NULL, NULL);
if (gtk_text_buffer_get_selection_bounds (get_buffer (text_view),
&start, &end) &&
gtk_text_iter_in_range (&iter, &start, &end) && !extends)
{
if (is_touchscreen)
{
gtk_gesture_set_sequence_state (GTK_GESTURE (gesture), sequence,
GTK_EVENT_SEQUENCE_CLAIMED);
if (!priv->selection_bubble ||
!gtk_widget_get_visible (priv->selection_bubble))
{
gtk_text_view_selection_bubble_popup_set (text_view);
priv->text_handles_enabled = FALSE;
}
else
{
gtk_text_view_selection_bubble_popup_unset (text_view);
}
}
else
{
/* Claim the sequence on the drag gesture, but attach no
* selection data, this is a special case to start DnD.
*/
gtk_gesture_set_state (priv->drag_gesture,
GTK_EVENT_SEQUENCE_CLAIMED);
}
break;
}
else
{
gtk_text_view_selection_bubble_popup_unset (text_view);
if (is_touchscreen)
priv->handle_place_time = g_get_monotonic_time ();
else
gtk_text_view_start_selection_drag (text_view, &iter,
SELECT_CHARACTERS, extends);
}
break;
}
case 2:
case 3:
gtk_text_view_end_selection_drag (text_view);
get_iter_from_gesture (text_view, GTK_GESTURE (gesture),
&iter, NULL, NULL);
gtk_text_view_start_selection_drag (text_view, &iter,
n_press == 2 ? SELECT_WORDS : SELECT_LINES,
extends);
break;
default:
break;
}
gtk_text_view_update_handles (text_view);
}
if (n_press >= 3)
gtk_event_controller_reset (GTK_EVENT_CONTROLLER (gesture));
}
static void
direction_changed (GdkDevice *device,
GParamSpec *pspec,
GtkTextView *text_view)
{
gtk_text_view_check_keymap_direction (text_view);
}
static void
gtk_text_view_focus_in (GtkWidget *widget)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextViewPrivate *priv = text_view->priv;
GdkSeat *seat;
GdkDevice *keyboard;
gtk_widget_queue_draw (widget);
DV(g_print (G_STRLOC": focus_in\n"));
gtk_text_view_reset_blink_time (text_view);
if (cursor_visible (text_view) && priv->layout)
{
gtk_text_layout_set_cursor_visible (priv->layout, TRUE);
gtk_text_view_check_cursor_blink (text_view);
}
seat = gdk_display_get_default_seat (gtk_widget_get_display (widget));
if (seat)
keyboard = gdk_seat_get_keyboard (seat);
else
keyboard = NULL;
if (keyboard)
g_signal_connect (keyboard, "notify::direction",
G_CALLBACK (direction_changed), text_view);
gtk_text_view_check_keymap_direction (text_view);
if (priv->editable)
{
priv->need_im_reset = TRUE;
gtk_im_context_focus_in (priv->im_context);
}
}
static void
gtk_text_view_focus_out (GtkWidget *widget)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextViewPrivate *priv = text_view->priv;
GdkSeat *seat;
GdkDevice *keyboard;
gtk_text_view_end_selection_drag (text_view);
gtk_widget_queue_draw (widget);
DV(g_print (G_STRLOC": focus_out\n"));
if (cursor_visible (text_view) && priv->layout)
{
gtk_text_view_check_cursor_blink (text_view);
gtk_text_layout_set_cursor_visible (priv->layout, FALSE);
}
seat = gdk_display_get_default_seat (gtk_widget_get_display (widget));
if (seat)
keyboard = gdk_seat_get_keyboard (seat);
else
keyboard = NULL;
if (keyboard)
g_signal_handlers_disconnect_by_func (keyboard, direction_changed, text_view);
gtk_text_view_selection_bubble_popup_unset (text_view);
text_view->priv->text_handles_enabled = FALSE;
gtk_text_view_update_handles (text_view);
if (priv->editable)
{
priv->need_im_reset = TRUE;
gtk_im_context_focus_out (priv->im_context);
}
}
static void
gtk_text_view_motion (GtkEventController *controller,
double x,
double y,
gpointer user_data)
{
gtk_text_view_unobscure_mouse_cursor (GTK_TEXT_VIEW (user_data));
}
static void
gtk_text_view_paint (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
g_return_if_fail (priv->layout != NULL);
g_return_if_fail (priv->xoffset >= - priv->left_padding);
g_return_if_fail (priv->yoffset >= - priv->top_margin);
while (priv->first_validate_idle != 0)
{
DV (g_print (G_STRLOC": first_validate_idle: %d\n",
priv->first_validate_idle));
gtk_text_view_flush_first_validate (text_view);
}
if (!priv->onscreen_validated)
{
g_warning (G_STRLOC ": somehow some text lines were modified or scrolling occurred since the last validation of lines on the screen - may be a text widget bug.");
g_assert_not_reached ();
}
gtk_snapshot_save (snapshot);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (-priv->xoffset, -priv->yoffset));
gtk_text_layout_snapshot (priv->layout,
widget,
snapshot,
&(GdkRectangle) {
priv->xoffset,
priv->yoffset,
gtk_widget_get_width (widget),
gtk_widget_get_height (widget)
},
priv->cursor_alpha);
gtk_snapshot_restore (snapshot);
}
static void
draw_text (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextViewPrivate *priv = text_view->priv;
GtkStyleContext *context;
gboolean did_save = FALSE;
if (priv->border_window_size.left || priv->border_window_size.top)
{
did_save = TRUE;
gtk_snapshot_save (snapshot);
gtk_snapshot_translate (snapshot,
&GRAPHENE_POINT_INIT (priv->border_window_size.left,
priv->border_window_size.top));
}
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT (0,
0,
SCREEN_WIDTH (widget),
SCREEN_HEIGHT (widget)));
context = gtk_widget_get_style_context (widget);
gtk_style_context_save_to_node (context, text_view->priv->text_window->css_node);
gtk_snapshot_render_background (snapshot, context,
-priv->xoffset, -priv->yoffset - priv->top_margin,
MAX (SCREEN_WIDTH (text_view), priv->width),
MAX (SCREEN_HEIGHT (text_view), priv->height));
gtk_snapshot_render_frame (snapshot, context,
-priv->xoffset, -priv->yoffset - priv->top_margin,
MAX (SCREEN_WIDTH (text_view), priv->width),
MAX (SCREEN_HEIGHT (text_view), priv->height));
gtk_style_context_restore (context);
if (GTK_TEXT_VIEW_GET_CLASS (text_view)->snapshot_layer != NULL)
{
gtk_snapshot_save (snapshot);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (-priv->xoffset, -priv->yoffset));
GTK_TEXT_VIEW_GET_CLASS (text_view)->snapshot_layer (text_view, GTK_TEXT_VIEW_LAYER_BELOW_TEXT, snapshot);
gtk_snapshot_restore (snapshot);
}
gtk_text_view_paint (widget, snapshot);
if (GTK_TEXT_VIEW_GET_CLASS (text_view)->snapshot_layer != NULL)
{
gtk_snapshot_save (snapshot);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (-priv->xoffset, -priv->yoffset));
GTK_TEXT_VIEW_GET_CLASS (text_view)->snapshot_layer (text_view, GTK_TEXT_VIEW_LAYER_ABOVE_TEXT, snapshot);
gtk_snapshot_restore (snapshot);
}
gtk_snapshot_pop (snapshot);
if (did_save)
gtk_snapshot_restore (snapshot);
}
static inline void
snapshot_text_view_child (GtkWidget *widget,
GtkTextViewChild *child,
GtkSnapshot *snapshot)
{
if (child != NULL)
gtk_widget_snapshot_child (widget, GTK_WIDGET (child), snapshot);
}
static void
gtk_text_view_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextViewPrivate *priv = text_view->priv;
const GList *iter;
DV(g_print (">Exposed ("G_STRLOC")\n"));
draw_text (widget, snapshot);
snapshot_text_view_child (widget, priv->left_child, snapshot);
snapshot_text_view_child (widget, priv->right_child, snapshot);
snapshot_text_view_child (widget, priv->top_child, snapshot);
snapshot_text_view_child (widget, priv->bottom_child, snapshot);
snapshot_text_view_child (widget, priv->center_child, snapshot);
for (iter = priv->anchored_children.head; iter; iter = iter->next)
{
const AnchoredChild *vc = iter->data;
gtk_widget_snapshot_child (widget, vc->widget, snapshot);
}
}
/**
* gtk_text_view_remove:
* @text_view: a `GtkTextView`
* @child: the child to remove
*
* Removes a child widget from @text_view.
*/
void
gtk_text_view_remove (GtkTextView *text_view,
GtkWidget *child)
{
GtkTextViewPrivate *priv = text_view->priv;
AnchoredChild *ac;
if (GTK_IS_TEXT_VIEW_CHILD (child))
{
GtkTextViewChild *vc = GTK_TEXT_VIEW_CHILD (child);
GtkTextViewChild **vcp;
if (vc == priv->left_child)
vcp = &priv->left_child;
else if (vc == priv->right_child)
vcp = &priv->right_child;
else if (vc == priv->top_child)
vcp = &priv->top_child;
else if (vc == priv->bottom_child)
vcp = &priv->bottom_child;
else if (vc == priv->center_child)
vcp = &priv->center_child;
else
vcp = NULL;
if (vcp)
{
*vcp = NULL;
gtk_widget_unparent (child);
g_object_unref (child);
return;
}
}
ac = g_object_get_qdata (G_OBJECT (child), quark_text_view_child);
if (ac == NULL)
{
g_warning ("%s is not a child of %s",
G_OBJECT_TYPE_NAME (child),
G_OBJECT_TYPE_NAME (text_view));
return;
}
g_queue_unlink (&priv->anchored_children, &ac->link);
gtk_widget_unparent (ac->widget);
anchored_child_free (ac);
}
#define CURSOR_ON_MULTIPLIER 2
#define CURSOR_OFF_MULTIPLIER 1
#define CURSOR_PEND_MULTIPLIER 3
#define CURSOR_DIVIDER 3
static gboolean
cursor_blinks (GtkTextView *text_view)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
gboolean blink;
#ifdef DEBUG_VALIDATION_AND_SCROLLING
return FALSE;
#endif
g_object_get (settings, "gtk-cursor-blink", &blink, NULL);
if (!blink)
return FALSE;
if (text_view->priv->editable)
{
GtkTextMark *insert;
GtkTextIter iter;
insert = gtk_text_buffer_get_insert (get_buffer (text_view));
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, insert);
if (gtk_text_iter_editable (&iter, text_view->priv->editable))
return blink;
}
return FALSE;
}
static gboolean
cursor_visible (GtkTextView *text_view)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
gboolean use_caret;
g_object_get (settings, "gtk-keynav-use-caret", &use_caret, NULL);
return use_caret || text_view->priv->cursor_visible;
}
static gboolean
get_middle_click_paste (GtkTextView *text_view)
{
GtkSettings *settings;
gboolean paste;
settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
g_object_get (settings, "gtk-enable-primary-paste", &paste, NULL);
return paste;
}
static int
get_cursor_time (GtkTextView *text_view)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
int time;
g_object_get (settings, "gtk-cursor-blink-time", &time, NULL);
return time;
}
static int
get_cursor_blink_timeout (GtkTextView *text_view)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
int time;
g_object_get (settings, "gtk-cursor-blink-timeout", &time, NULL);
return time;
}
/*
* Blink!
*/
typedef struct {
guint64 start;
guint64 end;
} BlinkData;
static gboolean blink_cb (GtkWidget *widget,
GdkFrameClock *clock,
gpointer user_data);
static void
add_blink_timeout (GtkTextView *self,
gboolean delay)
{
GtkTextViewPrivate *priv = self->priv;
BlinkData *data;
int blink_time;
priv->blink_start_time = g_get_monotonic_time ();
priv->cursor_alpha = 1.0;
blink_time = get_cursor_time (self);
data = g_new (BlinkData, 1);
data->start = priv->blink_start_time;
if (delay)
data->start += blink_time * 1000 / 2;
data->end = data->start + blink_time * 1000;
priv->blink_tick = gtk_widget_add_tick_callback (GTK_WIDGET (self),
blink_cb,
data,
g_free);
}
static void
remove_blink_timeout (GtkTextView *self)
{
GtkTextViewPrivate *priv = self->priv;
if (priv->blink_tick)
{
gtk_widget_remove_tick_callback (GTK_WIDGET (self), priv->blink_tick);
priv->blink_tick = 0;
}
}
static float
blink_alpha (float phase)
{
/* keep it simple, and split the blink cycle evenly
* into visible, fading out, invisible, fading in
*/
if (phase < 0.25)
return 1;
else if (phase < 0.5)
return 1 - 4 * (phase - 0.25);
else if (phase < 0.75)
return 0;
else
return 4 * (phase - 0.75);
}
static gboolean
blink_cb (GtkWidget *widget,
GdkFrameClock *clock,
gpointer user_data)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextViewPrivate *priv = text_view->priv;
BlinkData *data = user_data;
int blink_timeout;
int blink_time;
guint64 now;
float phase;
float alpha;
g_assert (priv->layout);
g_assert (cursor_visible (text_view));
blink_timeout = get_cursor_blink_timeout (text_view);
blink_time = get_cursor_time (text_view);
now = g_get_monotonic_time ();
if (now > priv->blink_start_time + blink_timeout * 1000000)
{
/* we've blinked enough without the user doing anything, stop blinking */
priv->cursor_alpha = 1.0;
remove_blink_timeout (text_view);
gtk_widget_queue_draw (widget);
return G_SOURCE_REMOVE;
}
phase = (now - data->start) / (float) (data->end - data->start);
if (now >= data->end)
{
data->start = data->end;
data->end = data->start + blink_time * 1000;
}
alpha = blink_alpha (phase);
if (priv->cursor_alpha != alpha)
{
priv->cursor_alpha = alpha;
gtk_widget_queue_draw (widget);
}
return G_SOURCE_CONTINUE;
}
static void
gtk_text_view_stop_cursor_blink (GtkTextView *text_view)
{
remove_blink_timeout (text_view);
}
static void
gtk_text_view_check_cursor_blink (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (cursor_blinks (text_view) && cursor_visible (text_view))
{
if (!priv->blink_tick)
add_blink_timeout (text_view, FALSE);
}
else
{
if (priv->blink_tick)
remove_blink_timeout (text_view);
}
}
static void
gtk_text_view_pend_cursor_blink (GtkTextView *text_view)
{
if (cursor_blinks (text_view) && cursor_visible (text_view))
{
remove_blink_timeout (text_view);
add_blink_timeout (text_view, TRUE);
}
}
static void
gtk_text_view_reset_blink_time (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
priv->blink_start_time = g_get_monotonic_time ();
}
/*
* Key binding handlers
*/
static gboolean
gtk_text_view_move_iter_by_lines (GtkTextView *text_view,
GtkTextIter *newplace,
int count)
{
gboolean ret = TRUE;
while (count < 0)
{
ret = gtk_text_layout_move_iter_to_previous_line (text_view->priv->layout, newplace);
count++;
}
while (count > 0)
{
ret = gtk_text_layout_move_iter_to_next_line (text_view->priv->layout, newplace);
count--;
}
return ret;
}
static void
move_cursor (GtkTextView *text_view,
const GtkTextIter *new_location,
gboolean extend_selection)
{
if (extend_selection)
gtk_text_buffer_move_mark_by_name (get_buffer (text_view),
"insert",
new_location);
else
gtk_text_buffer_place_cursor (get_buffer (text_view),
new_location);
gtk_text_view_check_cursor_blink (text_view);
}
static gboolean
iter_line_is_rtl (const GtkTextIter *iter)
{
GtkTextIter start, end;
char *text;
PangoDirection direction;
start = end = *iter;
gtk_text_iter_set_line_offset (&start, 0);
gtk_text_iter_forward_line (&end);
text = gtk_text_iter_get_visible_text (&start, &end);
direction = gdk_find_base_dir (text, -1);
g_free (text);
return direction == PANGO_DIRECTION_RTL;
}
static void
gtk_text_view_move_cursor (GtkTextView *text_view,
GtkMovementStep step,
int count,
gboolean extend_selection)
{
GtkTextViewPrivate *priv;
GtkTextIter insert;
GtkTextIter newplace;
gboolean cancel_selection = FALSE;
int cursor_x_pos = 0;
GtkDirectionType leave_direction = -1;
priv = text_view->priv;
if (!cursor_visible (text_view))
{
GtkScrollStep scroll_step;
double old_xpos, old_ypos;
switch (step)
{
case GTK_MOVEMENT_VISUAL_POSITIONS:
leave_direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
G_GNUC_FALLTHROUGH;
case GTK_MOVEMENT_LOGICAL_POSITIONS:
case GTK_MOVEMENT_WORDS:
scroll_step = GTK_SCROLL_HORIZONTAL_STEPS;
break;
case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
scroll_step = GTK_SCROLL_HORIZONTAL_ENDS;
break;
case GTK_MOVEMENT_DISPLAY_LINES:
leave_direction = count > 0 ? GTK_DIR_DOWN : GTK_DIR_UP;
G_GNUC_FALLTHROUGH;
case GTK_MOVEMENT_PARAGRAPHS:
case GTK_MOVEMENT_PARAGRAPH_ENDS:
scroll_step = GTK_SCROLL_STEPS;
break;
case GTK_MOVEMENT_PAGES:
scroll_step = GTK_SCROLL_PAGES;
break;
case GTK_MOVEMENT_HORIZONTAL_PAGES:
scroll_step = GTK_SCROLL_HORIZONTAL_PAGES;
break;
case GTK_MOVEMENT_BUFFER_ENDS:
scroll_step = GTK_SCROLL_ENDS;
break;
default:
scroll_step = GTK_SCROLL_PAGES;
break;
}
old_xpos = gtk_adjustment_get_value (priv->hadjustment);
old_ypos = gtk_adjustment_get_value (priv->vadjustment);
gtk_text_view_move_viewport (text_view, scroll_step, count);
if ((old_xpos == gtk_adjustment_get_target_value (priv->hadjustment) &&
old_ypos == gtk_adjustment_get_target_value (priv->vadjustment)) &&
leave_direction != (GtkDirectionType)-1 &&
!gtk_widget_keynav_failed (GTK_WIDGET (text_view),
leave_direction))
{
g_signal_emit_by_name (text_view, "move-focus", leave_direction);
}
return;
}
if (step == GTK_MOVEMENT_PAGES)
{
if (!gtk_text_view_scroll_pages (text_view, count, extend_selection))
gtk_widget_error_bell (GTK_WIDGET (text_view));
gtk_text_view_check_cursor_blink (text_view);
gtk_text_view_pend_cursor_blink (text_view);
return;
}
else if (step == GTK_MOVEMENT_HORIZONTAL_PAGES)
{
if (!gtk_text_view_scroll_hpages (text_view, count, extend_selection))
gtk_widget_error_bell (GTK_WIDGET (text_view));
gtk_text_view_check_cursor_blink (text_view);
gtk_text_view_pend_cursor_blink (text_view);
return;
}
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_insert (get_buffer (text_view)));
if (! extend_selection)
{
gboolean move_forward = count > 0;
GtkTextIter sel_bound;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &sel_bound,
gtk_text_buffer_get_selection_bound (get_buffer (text_view)));
if (iter_line_is_rtl (&insert))
move_forward = !move_forward;
/* if we move forward, assume the cursor is at the end of the selection;
* if we move backward, assume the cursor is at the start
*/
if (move_forward)
gtk_text_iter_order (&sel_bound, &insert);
else
gtk_text_iter_order (&insert, &sel_bound);
/* if we actually have a selection, just move *to* the beginning/end
* of the selection and not *from* there on LOGICAL_POSITIONS
* and VISUAL_POSITIONS movement
*/
if (! gtk_text_iter_equal (&sel_bound, &insert))
cancel_selection = TRUE;
}
newplace = insert;
if (step == GTK_MOVEMENT_DISPLAY_LINES)
gtk_text_view_get_virtual_cursor_pos (text_view, &insert, &cursor_x_pos, NULL);
switch (step)
{
case GTK_MOVEMENT_LOGICAL_POSITIONS:
if (! cancel_selection)
gtk_text_iter_forward_visible_cursor_positions (&newplace, count);
break;
case GTK_MOVEMENT_VISUAL_POSITIONS:
if (! cancel_selection)
gtk_text_layout_move_iter_visually (priv->layout,
&newplace, count);
break;
case GTK_MOVEMENT_WORDS:
if (iter_line_is_rtl (&newplace))
count *= -1;
if (count < 0)
gtk_text_iter_backward_visible_word_starts (&newplace, -count);
else if (count > 0)
{
if (!gtk_text_iter_forward_visible_word_ends (&newplace, count))
gtk_text_iter_forward_to_line_end (&newplace);
}
break;
case GTK_MOVEMENT_DISPLAY_LINES:
if (count < 0)
{
leave_direction = GTK_DIR_UP;
if (gtk_text_view_move_iter_by_lines (text_view, &newplace, count))
gtk_text_layout_move_iter_to_x (priv->layout, &newplace, cursor_x_pos);
else
gtk_text_iter_set_line_offset (&newplace, 0);
}
if (count > 0)
{
leave_direction = GTK_DIR_DOWN;
if (gtk_text_view_move_iter_by_lines (text_view, &newplace, count))
gtk_text_layout_move_iter_to_x (priv->layout, &newplace, cursor_x_pos);
else
gtk_text_iter_forward_to_line_end (&newplace);
}
break;
case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
if (count > 1)
gtk_text_view_move_iter_by_lines (text_view, &newplace, --count);
else if (count < -1)
gtk_text_view_move_iter_by_lines (text_view, &newplace, ++count);
if (count != 0)
gtk_text_layout_move_iter_to_line_end (priv->layout, &newplace, count);
break;
case GTK_MOVEMENT_PARAGRAPHS:
if (count > 0)
{
if (!gtk_text_iter_ends_line (&newplace))
{
gtk_text_iter_forward_to_line_end (&newplace);
--count;
}
gtk_text_iter_forward_visible_lines (&newplace, count);
gtk_text_iter_forward_to_line_end (&newplace);
}
else if (count < 0)
{
if (gtk_text_iter_get_line_offset (&newplace) > 0)
gtk_text_iter_set_line_offset (&newplace, 0);
gtk_text_iter_forward_visible_lines (&newplace, count);
gtk_text_iter_set_line_offset (&newplace, 0);
}
break;
case GTK_MOVEMENT_PARAGRAPH_ENDS:
if (count > 0)
{
if (!gtk_text_iter_ends_line (&newplace))
gtk_text_iter_forward_to_line_end (&newplace);
}
else if (count < 0)
{
gtk_text_iter_set_line_offset (&newplace, 0);
}
break;
case GTK_MOVEMENT_BUFFER_ENDS:
if (count > 0)
gtk_text_buffer_get_end_iter (get_buffer (text_view), &newplace);
else if (count < 0)
gtk_text_buffer_get_iter_at_offset (get_buffer (text_view), &newplace, 0);
break;
case GTK_MOVEMENT_PAGES:
case GTK_MOVEMENT_HORIZONTAL_PAGES:
/* We handle these cases above and return early from them. */
default:
g_assert_not_reached ();
break;
}
/* call move_cursor() even if the cursor hasn't moved, since it
cancels the selection
*/
move_cursor (text_view, &newplace, extend_selection);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (get_buffer (text_view)));
if (step == GTK_MOVEMENT_DISPLAY_LINES)
gtk_text_view_set_virtual_cursor_pos (text_view, cursor_x_pos, -1);
if (gtk_text_iter_equal (&insert, &newplace))
{
if (leave_direction != (GtkDirectionType)-1)
{
if (!gtk_widget_keynav_failed (GTK_WIDGET (text_view), leave_direction))
g_signal_emit_by_name (text_view, "move-focus", leave_direction);
}
else if (!cancel_selection)
gtk_widget_error_bell (GTK_WIDGET (text_view));
}
gtk_text_view_check_cursor_blink (text_view);
gtk_text_view_pend_cursor_blink (text_view);
priv->need_im_reset = TRUE;
gtk_text_view_reset_im_context (text_view);
}
static void
gtk_text_view_move_viewport (GtkTextView *text_view,
GtkScrollStep step,
int count)
{
GtkAdjustment *adjustment;
double increment;
switch (step)
{
case GTK_SCROLL_STEPS:
case GTK_SCROLL_PAGES:
case GTK_SCROLL_ENDS:
adjustment = text_view->priv->vadjustment;
break;
case GTK_SCROLL_HORIZONTAL_STEPS:
case GTK_SCROLL_HORIZONTAL_PAGES:
case GTK_SCROLL_HORIZONTAL_ENDS:
adjustment = text_view->priv->hadjustment;
break;
default:
adjustment = text_view->priv->vadjustment;
break;
}
switch (step)
{
case GTK_SCROLL_STEPS:
case GTK_SCROLL_HORIZONTAL_STEPS:
increment = gtk_adjustment_get_step_increment (adjustment);
break;
case GTK_SCROLL_PAGES:
case GTK_SCROLL_HORIZONTAL_PAGES:
increment = gtk_adjustment_get_page_increment (adjustment);
break;
case GTK_SCROLL_ENDS:
case GTK_SCROLL_HORIZONTAL_ENDS:
increment = gtk_adjustment_get_upper (adjustment) - gtk_adjustment_get_lower (adjustment);
break;
default:
increment = 0.0;
break;
}
gtk_adjustment_animate_to_value (adjustment, gtk_adjustment_get_value (adjustment) + count * increment);
}
static void
gtk_text_view_set_anchor (GtkTextView *text_view)
{
GtkTextIter insert;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_insert (get_buffer (text_view)));
gtk_text_buffer_create_mark (get_buffer (text_view), "anchor", &insert, TRUE);
}
static gboolean
gtk_text_view_scroll_pages (GtkTextView *text_view,
int count,
gboolean extend_selection)
{
GtkTextViewPrivate *priv;
GtkAdjustment *adjustment;
int cursor_x_pos, cursor_y_pos;
GtkTextMark *insert_mark;
GtkTextIter old_insert;
GtkTextIter new_insert;
GtkTextIter anchor;
double newval;
double oldval;
int y0, y1;
priv = text_view->priv;
g_return_val_if_fail (priv->vadjustment != NULL, FALSE);
adjustment = priv->vadjustment;
insert_mark = gtk_text_buffer_get_insert (get_buffer (text_view));
/* Make sure we start from the current cursor position, even
* if it was offscreen, but don't queue more scrolls if we're
* already behind.
*/
if (priv->pending_scroll)
cancel_pending_scroll (text_view);
else
gtk_text_view_scroll_mark_onscreen (text_view, insert_mark);
/* Validate the region that will be brought into view by the cursor motion
*/
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&old_insert, insert_mark);
if (count < 0)
{
gtk_text_view_get_first_para_iter (text_view, &anchor);
y0 = gtk_adjustment_get_page_size (adjustment);
y1 = gtk_adjustment_get_page_size (adjustment) + count * gtk_adjustment_get_page_increment (adjustment);
}
else
{
gtk_text_view_get_first_para_iter (text_view, &anchor);
y0 = count * gtk_adjustment_get_page_increment (adjustment) + gtk_adjustment_get_page_size (adjustment);
y1 = 0;
}
gtk_text_layout_validate_yrange (priv->layout, &anchor, y0, y1);
/* FIXME do we need to update the adjustment ranges here? */
new_insert = old_insert;
if (count < 0 && gtk_adjustment_get_value (adjustment) <= (gtk_adjustment_get_lower (adjustment) + 1e-12))
{
/* already at top, just be sure we are at offset 0 */
gtk_text_buffer_get_start_iter (get_buffer (text_view), &new_insert);
move_cursor (text_view, &new_insert, extend_selection);
}
else if (count > 0 && gtk_adjustment_get_value (adjustment) >= (gtk_adjustment_get_upper (adjustment) - gtk_adjustment_get_page_size (adjustment) - 1e-12))
{
/* already at bottom, just be sure we are at the end */
gtk_text_buffer_get_end_iter (get_buffer (text_view), &new_insert);
move_cursor (text_view, &new_insert, extend_selection);
}
else
{
gtk_text_view_get_virtual_cursor_pos (text_view, NULL, &cursor_x_pos, &cursor_y_pos);
oldval = newval = gtk_adjustment_get_target_value (adjustment);
newval += count * gtk_adjustment_get_page_increment (adjustment);
gtk_adjustment_animate_to_value (adjustment, newval);
cursor_y_pos += newval - oldval;
gtk_text_layout_get_iter_at_pixel (priv->layout, &new_insert, cursor_x_pos, cursor_y_pos);
move_cursor (text_view, &new_insert, extend_selection);
gtk_text_view_set_virtual_cursor_pos (text_view, cursor_x_pos, cursor_y_pos);
}
/* Adjust to have the cursor _entirely_ onscreen, move_mark_onscreen
* only guarantees 1 pixel onscreen.
*/
DV(g_print (G_STRLOC": scrolling onscreen\n"));
return !gtk_text_iter_equal (&old_insert, &new_insert);
}
static gboolean
gtk_text_view_scroll_hpages (GtkTextView *text_view,
int count,
gboolean extend_selection)
{
GtkTextViewPrivate *priv;
GtkAdjustment *adjustment;
int cursor_x_pos, cursor_y_pos;
GtkTextMark *insert_mark;
GtkTextIter old_insert;
GtkTextIter new_insert;
double newval;
double oldval;
int y, height;
priv = text_view->priv;
g_return_val_if_fail (priv->hadjustment != NULL, FALSE);
adjustment = priv->hadjustment;
insert_mark = gtk_text_buffer_get_insert (get_buffer (text_view));
/* Make sure we start from the current cursor position, even
* if it was offscreen, but don't queue more scrolls if we're
* already behind.
*/
if (priv->pending_scroll)
cancel_pending_scroll (text_view);
else
gtk_text_view_scroll_mark_onscreen (text_view, insert_mark);
/* Validate the line that we're moving within.
*/
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&old_insert, insert_mark);
gtk_text_layout_get_line_yrange (priv->layout, &old_insert, &y, &height);
gtk_text_layout_validate_yrange (priv->layout, &old_insert, y, y + height);
/* FIXME do we need to update the adjustment ranges here? */
new_insert = old_insert;
if (count < 0 && gtk_adjustment_get_value (adjustment) <= (gtk_adjustment_get_lower (adjustment) + 1e-12))
{
/* already at far left, just be sure we are at offset 0 */
gtk_text_iter_set_line_offset (&new_insert, 0);
move_cursor (text_view, &new_insert, extend_selection);
}
else if (count > 0 && gtk_adjustment_get_value (adjustment) >= (gtk_adjustment_get_upper (adjustment) - gtk_adjustment_get_page_size (adjustment) - 1e-12))
{
/* already at far right, just be sure we are at the end */
if (!gtk_text_iter_ends_line (&new_insert))
gtk_text_iter_forward_to_line_end (&new_insert);
move_cursor (text_view, &new_insert, extend_selection);
}
else
{
gtk_text_view_get_virtual_cursor_pos (text_view, NULL, &cursor_x_pos, &cursor_y_pos);
oldval = newval = gtk_adjustment_get_target_value (adjustment);
newval += count * gtk_adjustment_get_page_increment (adjustment);
gtk_adjustment_animate_to_value (adjustment, newval);
cursor_x_pos += newval - oldval;
gtk_text_layout_get_iter_at_pixel (priv->layout, &new_insert, cursor_x_pos, cursor_y_pos);
move_cursor (text_view, &new_insert, extend_selection);
gtk_text_view_set_virtual_cursor_pos (text_view, cursor_x_pos, cursor_y_pos);
}
/* FIXME for lines shorter than the overall widget width, this results in a
* "bounce" effect as we scroll to the right of the widget, then scroll
* back to get the end of the line onscreen.
* http://bugzilla.gnome.org/show_bug.cgi?id=68963
*/
/* Adjust to have the cursor _entirely_ onscreen, move_mark_onscreen
* only guarantees 1 pixel onscreen.
*/
DV(g_print (G_STRLOC": scrolling onscreen\n"));
return !gtk_text_iter_equal (&old_insert, &new_insert);
}
static gboolean
whitespace (gunichar ch, gpointer user_data)
{
return (ch == ' ' || ch == '\t');
}
static gboolean
not_whitespace (gunichar ch, gpointer user_data)
{
return !whitespace (ch, user_data);
}
static gboolean
find_whitepace_region (const GtkTextIter *center,
GtkTextIter *start, GtkTextIter *end)
{
*start = *center;
*end = *center;
if (gtk_text_iter_backward_find_char (start, not_whitespace, NULL, NULL))
gtk_text_iter_forward_char (start); /* we want the first whitespace... */
if (whitespace (gtk_text_iter_get_char (end), NULL))
gtk_text_iter_forward_find_char (end, not_whitespace, NULL, NULL);
return !gtk_text_iter_equal (start, end);
}
static void
gtk_text_view_insert_at_cursor (GtkTextView *text_view,
const char *str)
{
if (!gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), str, -1,
text_view->priv->editable))
{
gtk_widget_error_bell (GTK_WIDGET (text_view));
}
}
static void
gtk_text_view_delete_from_cursor (GtkTextView *text_view,
GtkDeleteType type,
int count)
{
GtkTextViewPrivate *priv;
GtkTextIter insert;
GtkTextIter start;
GtkTextIter end;
gboolean leave_one = FALSE;
priv = text_view->priv;
if (type == GTK_DELETE_CHARS)
{
/* Char delete deletes the selection, if one exists */
if (gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE,
priv->editable))
{
priv->need_im_reset = TRUE;
gtk_text_view_reset_im_context (text_view);
return;
}
}
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_insert (get_buffer (text_view)));
start = insert;
end = insert;
switch (type)
{
case GTK_DELETE_CHARS:
gtk_text_iter_forward_cursor_positions (&end, count);
break;
case GTK_DELETE_WORD_ENDS:
if (count > 0)
gtk_text_iter_forward_word_ends (&end, count);
else if (count < 0)
gtk_text_iter_backward_word_starts (&start, 0 - count);
break;
case GTK_DELETE_WORDS:
break;
case GTK_DELETE_DISPLAY_LINE_ENDS:
break;
case GTK_DELETE_DISPLAY_LINES:
break;
case GTK_DELETE_PARAGRAPH_ENDS:
if (count > 0)
{
/* If we're already at a newline, we need to
* simply delete that newline, instead of
* moving to the next one.
*/
if (gtk_text_iter_ends_line (&end))
{
gtk_text_iter_forward_line (&end);
--count;
}
while (count > 0)
{
if (!gtk_text_iter_forward_to_line_end (&end))
break;
--count;
}
}
else if (count < 0)
{
if (gtk_text_iter_starts_line (&start))
{
gtk_text_iter_backward_line (&start);
if (!gtk_text_iter_ends_line (&end))
gtk_text_iter_forward_to_line_end (&start);
}
else
{
gtk_text_iter_set_line_offset (&start, 0);
}
++count;
gtk_text_iter_backward_lines (&start, -count);
}
break;
case GTK_DELETE_PARAGRAPHS:
if (count > 0)
{
gtk_text_iter_set_line_offset (&start, 0);
gtk_text_iter_forward_to_line_end (&end);
/* Do the lines beyond the first. */
while (count > 1)
{
gtk_text_iter_forward_to_line_end (&end);
--count;
}
}
/* FIXME negative count? */
break;
case GTK_DELETE_WHITESPACE:
{
find_whitepace_region (&insert, &start, &end);
}
break;
default:
break;
}
if (!gtk_text_iter_equal (&start, &end))
{
gtk_text_buffer_begin_user_action (get_buffer (text_view));
if (gtk_text_buffer_delete_interactive (get_buffer (text_view), &start, &end,
priv->editable))
{
if (leave_one)
gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view),
" ", 1,
priv->editable);
}
else
{
gtk_widget_error_bell (GTK_WIDGET (text_view));
}
gtk_text_buffer_end_user_action (get_buffer (text_view));
gtk_text_view_set_virtual_cursor_pos (text_view, -1, -1);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (get_buffer (text_view)));
}
else
{
gtk_widget_error_bell (GTK_WIDGET (text_view));
}
priv->need_im_reset = TRUE;
gtk_text_view_reset_im_context (text_view);
}
static void
gtk_text_view_backspace (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
GtkTextIter insert;
priv = text_view->priv;
/* Backspace deletes the selection, if one exists */
if (gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE,
priv->editable))
{
priv->need_im_reset = TRUE;
gtk_text_view_reset_im_context (text_view);
return;
}
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&insert,
gtk_text_buffer_get_insert (get_buffer (text_view)));
if (gtk_text_buffer_backspace (get_buffer (text_view), &insert,
TRUE, priv->editable))
{
gtk_text_view_set_virtual_cursor_pos (text_view, -1, -1);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (get_buffer (text_view)));
priv->need_im_reset = TRUE;
gtk_text_view_reset_im_context (text_view);
}
else
{
gtk_widget_error_bell (GTK_WIDGET (text_view));
}
}
static void
gtk_text_view_cut_clipboard (GtkTextView *text_view)
{
GdkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view));
gtk_text_buffer_cut_clipboard (get_buffer (text_view),
clipboard,
text_view->priv->editable);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (get_buffer (text_view)));
gtk_text_view_selection_bubble_popup_unset (text_view);
}
static void
gtk_text_view_copy_clipboard (GtkTextView *text_view)
{
GdkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view));
gtk_text_buffer_copy_clipboard (get_buffer (text_view), clipboard);
/* on copy do not scroll, we are already onscreen */
}
static void
gtk_text_view_paste_clipboard (GtkTextView *text_view)
{
GdkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view));
text_view->priv->scroll_after_paste = TRUE;
gtk_text_buffer_paste_clipboard (get_buffer (text_view),
clipboard,
NULL,
text_view->priv->editable);
}
static void
gtk_text_view_paste_done_handler (GtkTextBuffer *buffer,
GdkClipboard *clipboard,
gpointer data)
{
GtkTextView *text_view = data;
GtkTextViewPrivate *priv;
priv = text_view->priv;
if (priv->scroll_after_paste)
{
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view, gtk_text_buffer_get_insert (buffer));
}
priv->scroll_after_paste = FALSE;
}
static void
gtk_text_view_buffer_changed_handler (GtkTextBuffer *buffer,
gpointer data)
{
GtkTextView *text_view = data;
gtk_text_view_update_handles (text_view);
}
static void
gtk_text_view_toggle_overwrite (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
priv->overwrite_mode = !priv->overwrite_mode;
if (priv->layout)
gtk_text_layout_set_overwrite_mode (priv->layout,
priv->overwrite_mode && priv->editable);
gtk_widget_queue_draw (GTK_WIDGET (text_view));
gtk_text_view_pend_cursor_blink (text_view);
g_object_notify (G_OBJECT (text_view), "overwrite");
}
/**
* gtk_text_view_get_overwrite: (attributes org.gtk.Method.get_property=overwrite)
* @text_view: a `GtkTextView`
*
* Returns whether the `GtkTextView` is in overwrite mode or not.
*
* Returns: whether @text_view is in overwrite mode or not.
*/
gboolean
gtk_text_view_get_overwrite (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
return text_view->priv->overwrite_mode;
}
/**
* gtk_text_view_set_overwrite: (attributes org.gtk.Method.set_property=overwrite)
* @text_view: a `GtkTextView`
* @overwrite: %TRUE to turn on overwrite mode, %FALSE to turn it off
*
* Changes the `GtkTextView` overwrite mode.
*/
void
gtk_text_view_set_overwrite (GtkTextView *text_view,
gboolean overwrite)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
overwrite = overwrite != FALSE;
if (text_view->priv->overwrite_mode != overwrite)
gtk_text_view_toggle_overwrite (text_view);
}
/**
* gtk_text_view_set_accepts_tab: (attributes org.gtk.Method.set_property=accepts-tab)
* @text_view: A `GtkTextView`
* @accepts_tab: %TRUE if pressing the Tab key should insert a tab
* character, %FALSE, if pressing the Tab key should move the
* keyboard focus.
*
* Sets the behavior of the text widget when the <kbd>Tab</kbd> key is pressed.
*
* If @accepts_tab is %TRUE, a tab character is inserted. If @accepts_tab
* is %FALSE the keyboard focus is moved to the next widget in the focus
* chain.
*/
void
gtk_text_view_set_accepts_tab (GtkTextView *text_view,
gboolean accepts_tab)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
accepts_tab = accepts_tab != FALSE;
if (text_view->priv->accepts_tab != accepts_tab)
{
text_view->priv->accepts_tab = accepts_tab;
g_object_notify (G_OBJECT (text_view), "accepts-tab");
}
}
/**
* gtk_text_view_get_accepts_tab: (attributes org.gtk.Method.get_property=accepts-tab)
* @text_view: A `GtkTextView`
*
* Returns whether pressing the <kbd>Tab</kbd> key inserts a tab characters.
*
* See [method@Gtk.TextView.set_accepts_tab].
*
* Returns: %TRUE if pressing the Tab key inserts a tab character,
* %FALSE if pressing the Tab key moves the keyboard focus.
*/
gboolean
gtk_text_view_get_accepts_tab (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
return text_view->priv->accepts_tab;
}
/*
* Selections
*/
static void
gtk_text_view_unselect (GtkTextView *text_view)
{
GtkTextIter insert;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_insert (get_buffer (text_view)));
gtk_text_buffer_move_mark (get_buffer (text_view),
gtk_text_buffer_get_selection_bound (get_buffer (text_view)),
&insert);
}
static void
move_mark_to_pointer_and_scroll (GtkTextView *text_view,
const char *mark_name)
{
GtkTextIter newplace;
GtkTextBuffer *buffer;
GtkTextMark *mark;
buffer = get_buffer (text_view);
get_iter_from_gesture (text_view, text_view->priv->drag_gesture,
&newplace, NULL, NULL);
mark = gtk_text_buffer_get_mark (buffer, mark_name);
/* This may invalidate the layout */
DV(g_print (G_STRLOC": move mark\n"));
gtk_text_buffer_move_mark (buffer, mark, &newplace);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view, mark);
DV (g_print ("first validate idle leaving %s is %d\n",
G_STRLOC, text_view->priv->first_validate_idle));
}
static gboolean
selection_scan_timeout (gpointer data)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (data);
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (get_buffer (text_view)));
return TRUE; /* remain installed. */
}
static void
extend_selection (GtkTextView *text_view,
SelectionGranularity granularity,
const GtkTextIter *location,
GtkTextIter *start,
GtkTextIter *end)
{
GtkTextExtendSelection extend_selection_granularity;
gboolean handled = FALSE;
switch (granularity)
{
case SELECT_CHARACTERS:
*start = *location;
*end = *location;
return;
case SELECT_WORDS:
extend_selection_granularity = GTK_TEXT_EXTEND_SELECTION_WORD;
break;
case SELECT_LINES:
extend_selection_granularity = GTK_TEXT_EXTEND_SELECTION_LINE;
break;
default:
g_assert_not_reached ();
}
g_signal_emit (text_view,
signals[EXTEND_SELECTION], 0,
extend_selection_granularity,
location,
start,
end,
&handled);
if (!handled)
{
*start = *location;
*end = *location;
}
}
static gboolean
gtk_text_view_extend_selection (GtkTextView *text_view,
GtkTextExtendSelection granularity,
const GtkTextIter *location,
GtkTextIter *start,
GtkTextIter *end)
{
*start = *location;
*end = *location;
switch (granularity)
{
case GTK_TEXT_EXTEND_SELECTION_WORD:
if (gtk_text_iter_inside_word (start))
{
if (!gtk_text_iter_starts_word (start))
gtk_text_iter_backward_visible_word_start (start);
if (!gtk_text_iter_ends_word (end))
{
if (!gtk_text_iter_forward_visible_word_end (end))
gtk_text_iter_forward_to_end (end);
}
}
else
{
GtkTextIter tmp;
/* @start is not contained in a word: the selection is extended to all
* the white spaces between the end of the word preceding @start and
* the start of the one following.
*/
tmp = *start;
if (gtk_text_iter_backward_visible_word_start (&tmp))
gtk_text_iter_forward_visible_word_end (&tmp);
if (gtk_text_iter_get_line (&tmp) == gtk_text_iter_get_line (start))
*start = tmp;
else
gtk_text_iter_set_line_offset (start, 0);
tmp = *end;
if (!gtk_text_iter_forward_visible_word_end (&tmp))
gtk_text_iter_forward_to_end (&tmp);
if (gtk_text_iter_ends_word (&tmp))
gtk_text_iter_backward_visible_word_start (&tmp);
if (gtk_text_iter_get_line (&tmp) == gtk_text_iter_get_line (end))
*end = tmp;
}
break;
case GTK_TEXT_EXTEND_SELECTION_LINE:
if (gtk_text_view_starts_display_line (text_view, start))
{
/* If on a display line boundary, we assume the user
* clicked off the end of a line and we therefore select
* the line before the boundary.
*/
gtk_text_view_backward_display_line_start (text_view, start);
}
else
{
/* start isn't on the start of a line, so we move it to the
* start, and move end to the end unless it's already there.
*/
gtk_text_view_backward_display_line_start (text_view, start);
if (!gtk_text_view_starts_display_line (text_view, end))
gtk_text_view_forward_display_line_end (text_view, end);
}
break;
default:
g_return_val_if_reached (GDK_EVENT_STOP);
}
return GDK_EVENT_STOP;
}
typedef struct
{
SelectionGranularity granularity;
GtkTextMark *orig_start;
GtkTextMark *orig_end;
GtkTextBuffer *buffer;
} SelectionData;
static void
selection_data_free (SelectionData *data)
{
if (data->orig_start != NULL)
gtk_text_buffer_delete_mark (data->buffer, data->orig_start);
if (data->orig_end != NULL)
gtk_text_buffer_delete_mark (data->buffer, data->orig_end);
g_object_unref (data->buffer);
g_slice_free (SelectionData, data);
}
static gboolean
drag_gesture_get_text_surface_coords (GtkGestureDrag *gesture,
GtkTextView *text_view,
int *start_x,
int *start_y,
int *x,
int *y)
{
double sx, sy, ox, oy;
if (!gtk_gesture_drag_get_start_point (gesture, &sx, &sy) ||
!gtk_gesture_drag_get_offset (gesture, &ox, &oy))
return FALSE;
*start_x = sx;
*start_y = sy;
_widget_to_text_surface_coords (text_view, start_x, start_y);
*x = sx + ox;
*y = sy + oy;
_widget_to_text_surface_coords (text_view, x, y);
return TRUE;
}
static void
gtk_text_view_drag_gesture_update (GtkGestureDrag *gesture,
double offset_x,
double offset_y,
GtkTextView *text_view)
{
int start_x, start_y, x, y;
GdkEventSequence *sequence;
gboolean is_touchscreen;
GdkEvent *event;
SelectionData *data;
GdkDevice *device;
GtkTextIter cursor;
data = g_object_get_qdata (G_OBJECT (gesture), quark_text_selection_data);
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
if (!drag_gesture_get_text_surface_coords (gesture, text_view,
&start_x, &start_y, &x, &y))
return;
device = gdk_event_get_device (event);
is_touchscreen = gtk_simulate_touchscreen () ||
gdk_device_get_source (device) == GDK_SOURCE_TOUCHSCREEN;
get_iter_from_gesture (text_view, text_view->priv->drag_gesture,
&cursor, NULL, NULL);
if (!data)
{
/* If no data is attached, the initial press happened within the current
* text selection, check for drag and drop to be initiated.
*/
if (gtk_drag_check_threshold_double (GTK_WIDGET (text_view), 0, 0, offset_x, offset_y))
{
if (!is_touchscreen)
{
GtkTextIter iter;
int buffer_x, buffer_y;
gtk_text_view_window_to_buffer_coords (text_view,
GTK_TEXT_WINDOW_TEXT,
start_x, start_y,
&buffer_x,
&buffer_y);
gtk_text_layout_get_iter_at_pixel (text_view->priv->layout,
&iter, buffer_x, buffer_y);
gtk_text_view_start_selection_dnd (text_view, &iter, event,
start_x, start_y);
/* Deny the gesture so we don't get further updates */
gtk_gesture_set_state (text_view->priv->drag_gesture,
GTK_EVENT_SEQUENCE_DENIED);
return;
}
else
{
gtk_text_view_start_selection_drag (text_view, &cursor,
SELECT_WORDS, TRUE);
data = g_object_get_qdata (G_OBJECT (gesture), quark_text_selection_data);
}
}
else
return;
}
g_assert (data != NULL);
/* Text selection */
if (data->granularity == SELECT_CHARACTERS)
{
move_mark_to_pointer_and_scroll (text_view, "insert");
}
else
{
GtkTextIter start, end;
GtkTextIter orig_start, orig_end;
GtkTextBuffer *buffer;
buffer = get_buffer (text_view);
gtk_text_buffer_get_iter_at_mark (buffer, &orig_start, data->orig_start);
gtk_text_buffer_get_iter_at_mark (buffer, &orig_end, data->orig_end);
get_iter_from_gesture (text_view, text_view->priv->drag_gesture,
&cursor, NULL, NULL);
extend_selection (text_view, data->granularity, &cursor, &start, &end);
/* either the selection extends to the front, or end (or not) */
if (gtk_text_iter_compare (&orig_start, &start) < 0)
start = orig_start;
if (gtk_text_iter_compare (&orig_end, &end) > 0)
end = orig_end;
gtk_text_buffer_select_range (buffer, &start, &end);
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (buffer));
}
/* If we had to scroll offscreen, insert a timeout to do so
* again. Note that in the timeout, even if the mouse doesn't
* move, due to this scroll xoffset/yoffset will have changed
* and we'll need to scroll again.
*/
if (text_view->priv->scroll_timeout != 0) /* reset on every motion event */
g_source_remove (text_view->priv->scroll_timeout);
text_view->priv->scroll_timeout = g_timeout_add (50, selection_scan_timeout, text_view);
gdk_source_set_static_name_by_id (text_view->priv->scroll_timeout, "[gtk] selection_scan_timeout");
gtk_text_view_selection_bubble_popup_unset (text_view);
if (is_touchscreen)
{
text_view->priv->text_handles_enabled = TRUE;
gtk_text_view_update_handles (text_view);
gtk_text_view_show_magnifier (text_view, &cursor, x, y);
}
}
static void
gtk_text_view_drag_gesture_end (GtkGestureDrag *gesture,
double offset_x,
double offset_y,
GtkTextView *text_view)
{
gboolean is_touchscreen, clicked_in_selection;
int start_x, start_y, x, y;
GdkEventSequence *sequence;
GtkTextViewPrivate *priv;
GdkEvent *event;
GdkDevice *device;
priv = text_view->priv;
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
clicked_in_selection =
g_object_get_qdata (G_OBJECT (gesture), quark_text_selection_data) == NULL;
g_object_set_qdata (G_OBJECT (gesture), quark_text_selection_data, NULL);
gtk_text_view_unobscure_mouse_cursor (text_view);
if (priv->scroll_timeout != 0)
{
g_source_remove (priv->scroll_timeout);
priv->scroll_timeout = 0;
}
if (priv->magnifier_popover)
gtk_widget_hide (priv->magnifier_popover);
if (!drag_gesture_get_text_surface_coords (gesture, text_view,
&start_x, &start_y, &x, &y))
return;
/* Check whether the drag was cancelled rather than finished */
if (!gtk_gesture_handles_sequence (GTK_GESTURE (gesture), sequence))
return;
event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
device = gdk_event_get_device (event);
is_touchscreen = gtk_simulate_touchscreen () ||
gdk_device_get_source (device) == GDK_SOURCE_TOUCHSCREEN;
if ((is_touchscreen || clicked_in_selection) &&
!gtk_drag_check_threshold_double (GTK_WIDGET (text_view), 0, 0, offset_x, offset_y))
{
GtkTextIter iter;
/* Unselect everything; we clicked inside selection, but
* didn't move by the drag threshold, so just clear selection
* and place cursor.
*/
gtk_text_layout_get_iter_at_pixel (priv->layout, &iter,
x + priv->xoffset, y + priv->yoffset);
gtk_text_buffer_place_cursor (get_buffer (text_view), &iter);
gtk_text_view_check_cursor_blink (text_view);
gtk_text_view_update_handles (text_view);
}
}
static void
gtk_text_view_start_selection_drag (GtkTextView *text_view,
const GtkTextIter *iter,
SelectionGranularity granularity,
gboolean extend)
{
GtkTextViewPrivate *priv;
GtkTextIter cursor, ins, bound;
GtkTextIter orig_start, orig_end;
GtkTextBuffer *buffer;
SelectionData *data;
priv = text_view->priv;
data = g_slice_new0 (SelectionData);
data->granularity = granularity;
buffer = get_buffer (text_view);
cursor = *iter;
extend_selection (text_view, data->granularity, &cursor, &ins, &bound);
orig_start = ins;
orig_end = bound;
if (extend)
{
/* Extend selection */
GtkTextIter old_ins, old_bound;
GtkTextIter old_start, old_end;
gtk_text_buffer_get_iter_at_mark (buffer, &old_ins, gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_get_iter_at_mark (buffer, &old_bound, gtk_text_buffer_get_selection_bound (buffer));
old_start = old_ins;
old_end = old_bound;
gtk_text_iter_order (&old_start, &old_end);
/* move the front cursor, if the mouse is in front of the selection. Should the
* cursor however be inside the selection (this happens on triple click) then we
* move the side which was last moved (current insert mark) */
if (gtk_text_iter_compare (&cursor, &old_start) <= 0 ||
(gtk_text_iter_compare (&cursor, &old_end) < 0 &&
gtk_text_iter_compare (&old_ins, &old_bound) <= 0))
{
bound = old_end;
}
else
{
ins = bound;
bound = old_start;
}
/* Store any previous selection */
if (gtk_text_iter_compare (&old_start, &old_end) != 0)
{
orig_start = old_ins;
orig_end = old_bound;
}
}
gtk_text_buffer_select_range (buffer, &ins, &bound);
gtk_text_iter_order (&orig_start, &orig_end);
data->orig_start = gtk_text_buffer_create_mark (buffer, NULL,
&orig_start, TRUE);
data->orig_end = gtk_text_buffer_create_mark (buffer, NULL,
&orig_end, TRUE);
data->buffer = g_object_ref (buffer);
gtk_text_view_check_cursor_blink (text_view);
g_object_set_qdata_full (G_OBJECT (priv->drag_gesture),
quark_text_selection_data,
data, (GDestroyNotify) selection_data_free);
// gtk_gesture_set_state (priv->drag_gesture,
// GTK_EVENT_SEQUENCE_CLAIMED);
}
/* returns whether we were really dragging */
static gboolean
gtk_text_view_end_selection_drag (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
priv = text_view->priv;
if (!gtk_gesture_is_active (priv->drag_gesture))
return FALSE;
if (priv->scroll_timeout != 0)
{
g_source_remove (priv->scroll_timeout);
priv->scroll_timeout = 0;
}
if (priv->magnifier_popover)
gtk_widget_hide (priv->magnifier_popover);
return TRUE;
}
/*
* Layout utils
*/
static void
gtk_text_view_set_attributes_from_style (GtkTextView *text_view,
GtkTextAttributes *values)
{
GtkCssStyle *style;
const GdkRGBA black = { 0, };
const GdkRGBA *color;
const GdkRGBA *decoration_color;
GtkTextDecorationLine decoration_line;
GtkTextDecorationStyle decoration_style;
if (!values->appearance.bg_rgba)
values->appearance.bg_rgba = gdk_rgba_copy (&black);
if (!values->appearance.fg_rgba)
values->appearance.fg_rgba = gdk_rgba_copy (&black);
style = gtk_css_node_get_style (gtk_widget_get_css_node (GTK_WIDGET (text_view)));
color = gtk_css_color_value_get_rgba (style->background->background_color);
*values->appearance.bg_rgba = *color;
color = gtk_css_color_value_get_rgba (style->core->color);
*values->appearance.fg_rgba = *color;
if (values->font)
pango_font_description_free (values->font);
values->font = gtk_css_style_get_pango_font (style);
/* text-decoration */
decoration_line = _gtk_css_text_decoration_line_value_get (style->font_variant->text_decoration_line);
decoration_style = _gtk_css_text_decoration_style_value_get (style->font_variant->text_decoration_style);
decoration_color = gtk_css_color_value_get_rgba (style->font_variant->text_decoration_color
? style->font_variant->text_decoration_color
: style->core->color);
if (decoration_line & GTK_CSS_TEXT_DECORATION_LINE_UNDERLINE)
{
switch (decoration_style)
{
case GTK_CSS_TEXT_DECORATION_STYLE_DOUBLE:
values->appearance.underline = PANGO_UNDERLINE_DOUBLE;
break;
case GTK_CSS_TEXT_DECORATION_STYLE_WAVY:
values->appearance.underline = PANGO_UNDERLINE_ERROR;
break;
case GTK_CSS_TEXT_DECORATION_STYLE_SOLID:
default:
values->appearance.underline = PANGO_UNDERLINE_SINGLE;
break;
}
if (values->appearance.underline_rgba)
*values->appearance.underline_rgba = *decoration_color;
else
values->appearance.underline_rgba = gdk_rgba_copy (decoration_color);
}
else
{
values->appearance.underline = PANGO_UNDERLINE_NONE;
gdk_rgba_free (values->appearance.underline_rgba);
values->appearance.underline_rgba = NULL;
}
if (decoration_line & GTK_CSS_TEXT_DECORATION_LINE_OVERLINE)
{
values->appearance.overline = PANGO_OVERLINE_SINGLE;
if (values->appearance.overline_rgba)
*values->appearance.overline_rgba = *decoration_color;
else
values->appearance.overline_rgba = gdk_rgba_copy (decoration_color);
}
else
{
values->appearance.overline = PANGO_OVERLINE_NONE;
gdk_rgba_free (values->appearance.overline_rgba);
values->appearance.overline_rgba = NULL;
}
if (decoration_line & GTK_CSS_TEXT_DECORATION_LINE_LINE_THROUGH)
{
values->appearance.strikethrough = TRUE;
if (values->appearance.strikethrough_rgba)
*values->appearance.strikethrough_rgba = *decoration_color;
else
values->appearance.strikethrough_rgba = gdk_rgba_copy (decoration_color);
}
else
{
values->appearance.strikethrough = FALSE;
gdk_rgba_free (values->appearance.strikethrough_rgba);
values->appearance.strikethrough_rgba = NULL;
}
/* letter-spacing */
values->letter_spacing = _gtk_css_number_value_get (style->font->letter_spacing, 100) * PANGO_SCALE;
/* line-height */
values->line_height = gtk_css_line_height_value_get (style->font->line_height);
values->line_height_is_absolute = FALSE;
if (values->line_height != 0.0)
{
if (gtk_css_number_value_get_dimension (style->font->line_height) == GTK_CSS_DIMENSION_LENGTH)
values->line_height_is_absolute = TRUE;
}
/* OpenType features */
g_free (values->font_features);
values->font_features = gtk_css_style_compute_font_features (style);
/* text-transform */
values->text_transform = gtk_css_style_get_pango_text_transform (style);
}
static void
gtk_text_view_check_keymap_direction (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
GdkSeat *seat;
GdkDevice *keyboard;
PangoDirection direction;
GtkTextDirection new_cursor_dir;
GtkTextDirection new_keyboard_dir;
gboolean split_cursor;
if (!priv->layout)
return;
seat = gdk_display_get_default_seat (gtk_widget_get_display (GTK_WIDGET (text_view)));
if (seat)
keyboard = gdk_seat_get_keyboard (seat);
else
keyboard = NULL;
if (keyboard)
direction = gdk_device_get_direction (keyboard);
else
direction = PANGO_DIRECTION_LTR;
g_object_get (settings,
"gtk-split-cursor", &split_cursor,
NULL);
if (direction == PANGO_DIRECTION_RTL)
new_keyboard_dir = GTK_TEXT_DIR_RTL;
else
new_keyboard_dir = GTK_TEXT_DIR_LTR;
if (split_cursor)
new_cursor_dir = GTK_TEXT_DIR_NONE;
else
new_cursor_dir = new_keyboard_dir;
gtk_text_layout_set_cursor_direction (priv->layout, new_cursor_dir);
gtk_text_layout_set_keyboard_direction (priv->layout, new_keyboard_dir);
}
static void
gtk_text_view_ensure_layout (GtkTextView *text_view)
{
GtkWidget *widget;
GtkTextViewPrivate *priv;
widget = GTK_WIDGET (text_view);
priv = text_view->priv;
if (priv->layout == NULL)
{
GtkTextAttributes *style;
const GList *iter;
PangoContext *ltr_context, *rtl_context;
DV(g_print(G_STRLOC"\n"));
priv->layout = gtk_text_layout_new ();
g_signal_connect (priv->layout,
"invalidated",
G_CALLBACK (invalidated_handler),
text_view);
g_signal_connect (priv->layout,
"changed",
G_CALLBACK (changed_handler),
text_view);
g_signal_connect (priv->layout,
"allocate-child",
G_CALLBACK (gtk_anchored_child_allocated),
text_view);
if (get_buffer (text_view))
gtk_text_layout_set_buffer (priv->layout, get_buffer (text_view));
if ((gtk_widget_has_focus (widget) && cursor_visible (text_view)))
gtk_text_view_pend_cursor_blink (text_view);
else
gtk_text_layout_set_cursor_visible (priv->layout, FALSE);
gtk_text_layout_set_overwrite_mode (priv->layout,
priv->overwrite_mode && priv->editable);
ltr_context = gtk_widget_create_pango_context (GTK_WIDGET (text_view));
rtl_context = gtk_widget_create_pango_context (GTK_WIDGET (text_view));
pango_context_set_base_dir (ltr_context, PANGO_DIRECTION_LTR);
pango_context_set_base_dir (rtl_context, PANGO_DIRECTION_RTL);
gtk_text_layout_set_contexts (priv->layout, ltr_context, rtl_context);
g_object_unref (ltr_context);
g_object_unref (rtl_context);
gtk_text_view_update_pango_contexts (text_view);
gtk_text_view_check_keymap_direction (text_view);
style = gtk_text_attributes_new ();
gtk_text_view_set_attributes_from_style (text_view, style);
style->pixels_above_lines = priv->pixels_above_lines;
style->pixels_below_lines = priv->pixels_below_lines;
style->pixels_inside_wrap = priv->pixels_inside_wrap;
style->left_margin = priv->left_margin;
style->right_margin = priv->right_margin;
priv->layout->right_padding = priv->right_padding;
priv->layout->left_padding = priv->left_padding;
style->indent = priv->indent;
style->tabs = priv->tabs ? pango_tab_array_copy (priv->tabs) : NULL;
style->wrap_mode = priv->wrap_mode;
style->justification = priv->justify;
style->direction = gtk_widget_get_direction (GTK_WIDGET (text_view));
gtk_text_layout_set_default_style (priv->layout, style);
gtk_text_attributes_unref (style);
/* Set layout for all anchored children */
iter = priv->anchored_children.head;
while (iter != NULL)
{
const AnchoredChild *ac = iter->data;
iter = iter->next;
gtk_text_anchored_child_set_layout (ac->widget, priv->layout);
/* ac may now be invalid! */
}
}
}
GtkTextAttributes*
gtk_text_view_get_default_attributes (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
gtk_text_view_ensure_layout (text_view);
return gtk_text_attributes_copy (text_view->priv->layout->default_style);
}
static void
gtk_text_view_destroy_layout (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (priv->layout)
{
const GList *iter;
gtk_text_view_remove_validate_idles (text_view);
g_signal_handlers_disconnect_by_func (priv->layout,
invalidated_handler,
text_view);
g_signal_handlers_disconnect_by_func (priv->layout,
changed_handler,
text_view);
iter = priv->anchored_children.head;
while (iter != NULL)
{
const AnchoredChild *ac = iter->data;
iter = iter->next;
gtk_text_anchored_child_set_layout (ac->widget, NULL);
/* vc may now be invalid! */
}
gtk_text_view_stop_cursor_blink (text_view);
gtk_text_view_end_selection_drag (text_view);
g_object_unref (priv->layout);
priv->layout = NULL;
}
}
/**
* gtk_text_view_reset_im_context:
* @text_view: a `GtkTextView`
*
* Reset the input method context of the text view if needed.
*
* This can be necessary in the case where modifying the buffer
* would confuse on-going input method behavior.
*/
void
gtk_text_view_reset_im_context (GtkTextView *text_view)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->priv->need_im_reset)
{
text_view->priv->need_im_reset = FALSE;
gtk_im_context_reset (text_view->priv->im_context);
}
}
/**
* gtk_text_view_im_context_filter_keypress:
* @text_view: a `GtkTextView`
* @event: the key event
*
* Allow the `GtkTextView` input method to internally handle key press
* and release events.
*
* If this function returns %TRUE, then no further processing should be
* done for this key event. See [method@Gtk.IMContext.filter_keypress].
*
* Note that you are expected to call this function from your handler
* when overriding key event handling. This is needed in the case when
* you need to insert your own key handling between the input method
* and the default key event handling of the `GtkTextView`.
*
* ```c
* static gboolean
* gtk_foo_bar_key_press_event (GtkWidget *widget,
* GdkEvent *event)
* {
* guint keyval;
*
* gdk_event_get_keyval ((GdkEvent*)event, &keyval);
*
* if (keyval == GDK_KEY_Return || keyval == GDK_KEY_KP_Enter)
* {
* if (gtk_text_view_im_context_filter_keypress (GTK_TEXT_VIEW (widget), event))
* return TRUE;
* }
*
* // Do some stuff
*
* return GTK_WIDGET_CLASS (gtk_foo_bar_parent_class)->key_press_event (widget, event);
* }
* ```
*
* Returns: %TRUE if the input method handled the key event.
*/
gboolean
gtk_text_view_im_context_filter_keypress (GtkTextView *text_view,
GdkEvent *event)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
return gtk_im_context_filter_keypress (text_view->priv->im_context, event);
}
/*
* DND feature
*/
static void
dnd_finished_cb (GdkDrag *drag,
GtkTextView *self)
{
GtkTextBuffer *buffer = self->priv->buffer;
if (self->priv->dnd_drag_begin_mark)
{
if (gdk_drag_get_selected_action (drag) == GDK_ACTION_MOVE)
{
{
GtkTextIter begin, end;
gtk_text_buffer_get_iter_at_mark (buffer, &begin, self->priv->dnd_drag_begin_mark);
gtk_text_buffer_get_iter_at_mark (buffer, &end, self->priv->dnd_drag_end_mark);
gtk_text_buffer_delete (buffer, &begin, &end);
}
}
gtk_text_buffer_delete_mark (buffer, self->priv->dnd_drag_begin_mark);
gtk_text_buffer_delete_mark (buffer, self->priv->dnd_drag_end_mark);
self->priv->dnd_drag_begin_mark = NULL;
self->priv->dnd_drag_end_mark = NULL;
}
self->priv->drag = NULL;
}
static void
dnd_cancel_cb (GdkDrag *drag,
GdkDragCancelReason reason,
GtkTextView *self)
{
GtkTextBuffer *buffer = self->priv->buffer;
if (self->priv->dnd_drag_begin_mark)
{
gtk_text_buffer_delete_mark (buffer, self->priv->dnd_drag_begin_mark);
gtk_text_buffer_delete_mark (buffer, self->priv->dnd_drag_end_mark);
self->priv->dnd_drag_begin_mark = NULL;
self->priv->dnd_drag_end_mark = NULL;
}
self->priv->drag = NULL;
}
static void
gtk_text_view_start_selection_dnd (GtkTextView *text_view,
const GtkTextIter *iter,
GdkEvent *event,
int x,
int y)
{
GtkWidget *widget = GTK_WIDGET (text_view);
GtkTextBuffer *buffer = gtk_text_view_get_buffer (text_view);
GdkContentProvider *content;
GtkTextIter start, end;
GdkDragAction actions;
GdkSurface *surface;
GdkDevice *device;
GdkDrag *drag;
if (text_view->priv->editable)
actions = GDK_ACTION_COPY | GDK_ACTION_MOVE;
else
actions = GDK_ACTION_COPY;
content = gtk_text_buffer_get_selection_content (buffer);
surface = gdk_event_get_surface (event);
device = gdk_event_get_device (event);
drag = gdk_drag_begin (surface, device, content, actions, x, y);
g_object_unref (content);
g_signal_connect (drag, "dnd-finished", G_CALLBACK (dnd_finished_cb), text_view);
g_signal_connect (drag, "cancel", G_CALLBACK (dnd_cancel_cb), text_view);
if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
{
GdkPaintable *paintable;
paintable = gtk_text_util_create_rich_drag_icon (widget, buffer, &start, &end);
gtk_drag_icon_set_from_paintable (drag, paintable, 0, 0);
g_object_unref (paintable);
text_view->priv->dnd_drag_begin_mark = gtk_text_buffer_create_mark (buffer, NULL, &start, TRUE);
text_view->priv->dnd_drag_end_mark = gtk_text_buffer_create_mark (buffer, NULL, &end, TRUE);
}
text_view->priv->drag = drag;
g_object_unref (drag);
}
static void
gtk_text_view_drag_leave (GtkDropTarget *dest,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
gtk_text_mark_set_visible (priv->dnd_mark, FALSE);
}
static GdkDragAction
gtk_text_view_drag_motion (GtkDropTarget *dest,
double x,
double y,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
GtkTextIter newplace;
GtkTextIter start;
GtkTextIter end;
int bx, by;
gboolean can_accept = FALSE;
gtk_text_view_window_to_buffer_coords (text_view,
GTK_TEXT_WINDOW_WIDGET,
x, y,
&bx, &by);
gtk_text_layout_get_iter_at_pixel (priv->layout,
&newplace,
bx, by);
if (gtk_text_buffer_get_selection_bounds (get_buffer (text_view),
&start, &end) &&
gtk_text_iter_compare (&newplace, &start) >= 0 &&
gtk_text_iter_compare (&newplace, &end) <= 0)
{
/* We're inside the selection. */
}
else
{
can_accept = gtk_text_iter_can_insert (&newplace, priv->editable);
}
if (can_accept)
{
gtk_text_mark_set_visible (priv->dnd_mark, cursor_visible (text_view));
if (text_view->priv->drag)
return GDK_ACTION_MOVE;
else
return GDK_ACTION_COPY;
}
else
{
gtk_text_mark_set_visible (priv->dnd_mark, FALSE);
return 0;
}
}
static gboolean
gtk_text_view_drag_drop (GtkDropTarget *dest,
const GValue *value,
double x,
double y,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
GtkTextBuffer *buffer;
GtkTextIter drop_point;
buffer = get_buffer (text_view);
gtk_text_buffer_get_iter_at_mark (buffer, &drop_point, priv->dnd_mark);
if (!gtk_text_iter_can_insert (&drop_point, priv->editable))
return FALSE;
gtk_text_buffer_begin_user_action (buffer);
if (!gtk_text_buffer_insert_interactive (buffer,
&drop_point, (char *) g_value_get_string (value), -1,
text_view->priv->editable))
gtk_widget_error_bell (GTK_WIDGET (text_view));
gtk_text_buffer_get_iter_at_mark (buffer, &drop_point, priv->dnd_mark);
gtk_text_buffer_place_cursor (buffer, &drop_point);
gtk_text_buffer_end_user_action (buffer);
return TRUE;
}
static void
gtk_text_view_set_hadjustment (GtkTextView *text_view,
GtkAdjustment *adjustment)
{
GtkTextViewPrivate *priv = text_view->priv;
if (adjustment && priv->hadjustment == adjustment)
return;
if (priv->hadjustment != NULL)
{
g_signal_handlers_disconnect_by_func (priv->hadjustment,
gtk_text_view_value_changed,
text_view);
g_object_unref (priv->hadjustment);
}
if (adjustment == NULL)
adjustment = gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (gtk_text_view_value_changed), text_view);
priv->hadjustment = g_object_ref_sink (adjustment);
gtk_text_view_set_hadjustment_values (text_view);
g_object_notify (G_OBJECT (text_view), "hadjustment");
}
static void
gtk_text_view_set_vadjustment (GtkTextView *text_view,
GtkAdjustment *adjustment)
{
GtkTextViewPrivate *priv = text_view->priv;
if (adjustment && priv->vadjustment == adjustment)
return;
if (priv->vadjustment != NULL)
{
g_signal_handlers_disconnect_by_func (priv->vadjustment,
gtk_text_view_value_changed,
text_view);
g_object_unref (priv->vadjustment);
}
if (adjustment == NULL)
adjustment = gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (gtk_text_view_value_changed), text_view);
priv->vadjustment = g_object_ref_sink (adjustment);
gtk_text_view_set_vadjustment_values (text_view);
g_object_notify (G_OBJECT (text_view), "vadjustment");
}
static void
gtk_text_view_set_hadjustment_values (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
int screen_width;
double old_value;
double new_value;
double new_upper;
priv = text_view->priv;
screen_width = SCREEN_WIDTH (text_view);
old_value = gtk_adjustment_get_value (priv->hadjustment);
new_upper = MAX (screen_width, priv->width);
g_object_set (priv->hadjustment,
"lower", 0.0,
"upper", new_upper,
"page-size", (double)screen_width,
"step-increment", screen_width * 0.1,
"page-increment", screen_width * 0.9,
NULL);
new_value = CLAMP (old_value, 0, new_upper - screen_width);
if (new_value != old_value)
gtk_adjustment_set_value (priv->hadjustment, new_value);
}
static void
gtk_text_view_set_vadjustment_values (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
GtkTextIter first_para;
int screen_height;
int y;
double old_value;
double new_value;
double new_upper;
priv = text_view->priv;
screen_height = SCREEN_HEIGHT (text_view);
old_value = gtk_adjustment_get_value (priv->vadjustment);
new_upper = MAX (screen_height, priv->height);
g_object_set (priv->vadjustment,
"lower", 0.0,
"upper", new_upper,
"page-size", (double)screen_height,
"step-increment", screen_height * 0.1,
"page-increment", screen_height * 0.9,
NULL);
/* Now adjust the value of the adjustment to keep the cursor at the
* same place in the buffer */
gtk_text_view_ensure_layout (text_view);
gtk_text_view_get_first_para_iter (text_view, &first_para);
gtk_text_layout_get_line_yrange (priv->layout, &first_para, &y, NULL);
y += priv->first_para_pixels;
new_value = CLAMP (y, 0, new_upper - screen_height);
if (new_value != old_value)
gtk_adjustment_set_value (priv->vadjustment, new_value);
}
static void
gtk_text_view_value_changed (GtkAdjustment *adjustment,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
GtkTextIter iter;
int line_top;
int dx = 0;
int dy = 0;
priv = text_view->priv;
/* Note that we oddly call this function with adjustment == NULL
* sometimes
*/
priv->onscreen_validated = FALSE;
DV(g_print(">Scroll offset changed %s/%g, onscreen_validated = FALSE ("G_STRLOC")\n",
adjustment == priv->hadjustment ? "hadjustment" : adjustment == priv->vadjustment ? "vadjustment" : "none",
adjustment ? gtk_adjustment_get_value (adjustment) : 0.0));
if (adjustment == priv->hadjustment)
{
dx = priv->xoffset - (int)gtk_adjustment_get_value (adjustment);
priv->xoffset = (int)gtk_adjustment_get_value (adjustment) - priv->left_padding;
}
else if (adjustment == priv->vadjustment)
{
dy = priv->yoffset - (int)gtk_adjustment_get_value (adjustment) + priv->top_margin ;
priv->yoffset -= dy;
if (priv->layout)
{
gtk_text_layout_get_line_at_y (priv->layout, &iter, gtk_adjustment_get_value (adjustment), &line_top);
gtk_text_buffer_move_mark (get_buffer (text_view), priv->first_para_mark, &iter);
priv->first_para_pixels = gtk_adjustment_get_value (adjustment) - line_top;
}
}
if (dx != 0 || dy != 0)
{
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
{
if (priv->selection_bubble)
gtk_widget_hide (priv->selection_bubble);
}
}
/* This could result in invalidation, which would install the
* first_validate_idle, which would validate onscreen;
* but we're going to go ahead and validate here, so
* first_validate_idle shouldn't have anything to do.
*/
gtk_text_view_update_layout_width (text_view);
/* We also update the IM spot location here, since the IM context
* might do something that leads to validation.
*/
gtk_text_view_update_im_spot_location (text_view);
/* note that validation of onscreen could invoke this function
* recursively, by scrolling to maintain first_para, or in response
* to updating the layout width, however there is no problem with
* that, or shouldn't be.
*/
gtk_text_view_validate_onscreen (text_view);
/* If this got installed, get rid of it, it's just a waste of time. */
if (priv->first_validate_idle != 0)
{
g_source_remove (priv->first_validate_idle);
priv->first_validate_idle = 0;
}
/* Allow to extend selection with mouse scrollwheel. Bug 710612 */
if (gtk_gesture_is_active (priv->drag_gesture))
{
GdkEvent *current_event;
current_event = gtk_event_controller_get_current_event (GTK_EVENT_CONTROLLER (priv->drag_gesture));
if (current_event != NULL)
{
if (gdk_event_get_event_type (current_event) == GDK_SCROLL)
move_mark_to_pointer_and_scroll (text_view, "insert");
}
}
/* Finally we update the IM cursor location again, to ensure any
* changes made by the validation are pushed through.
*/
gtk_text_view_update_im_spot_location (text_view);
gtk_text_view_update_handles (text_view);
if (priv->anchored_children.length > 0)
gtk_widget_queue_allocate (GTK_WIDGET (text_view));
else
gtk_widget_queue_draw (GTK_WIDGET (text_view));
DV(g_print(">End scroll offset changed handler ("G_STRLOC")\n"));
}
static void
gtk_text_view_commit_handler (GtkIMContext *context,
const char *str,
GtkTextView *text_view)
{
gtk_text_view_commit_text (text_view, str);
gtk_text_view_reset_blink_time (text_view);
gtk_text_view_pend_cursor_blink (text_view);
gtk_im_context_reset (context);
}
static void
gtk_text_view_commit_text (GtkTextView *text_view,
const char *str)
{
GtkTextViewPrivate *priv;
gboolean had_selection;
GtkTextIter begin, end;
guint length;
priv = text_view->priv;
gtk_text_view_obscure_mouse_cursor (text_view);
gtk_text_buffer_begin_user_action (get_buffer (text_view));
had_selection = gtk_text_buffer_get_selection_bounds (get_buffer (text_view), &begin, &end);
gtk_text_iter_order (&begin, &end);
length = gtk_text_iter_get_offset (&end) - gtk_text_iter_get_offset (&begin);
if (gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE, priv->editable))
{
/* If something was deleted, create a second group for the insert. This
* ensures that there are two undo operations. One for the deletion, and
* one for the insertion of new text. However, if there is only a single
* character overwritten, that isn't very useful, just keep the single
* undo group.
*/
if (length > 1)
{
gtk_text_buffer_end_user_action (get_buffer (text_view));
gtk_text_buffer_begin_user_action (get_buffer (text_view));
}
}
if (!strcmp (str, "\n"))
{
if (!gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), "\n", 1,
priv->editable))
{
gtk_widget_error_bell (GTK_WIDGET (text_view));
}
}
else
{
if (!had_selection && priv->overwrite_mode)
{
GtkTextIter insert;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&insert,
gtk_text_buffer_get_insert (get_buffer (text_view)));
if (!gtk_text_iter_ends_line (&insert))
gtk_text_view_delete_from_cursor (text_view, GTK_DELETE_CHARS, 1);
}
if (!gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), str, -1,
priv->editable))
{
gtk_widget_error_bell (GTK_WIDGET (text_view));
}
}
gtk_text_buffer_end_user_action (get_buffer (text_view));
gtk_text_view_set_virtual_cursor_pos (text_view, -1, -1);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (get_buffer (text_view)));
}
static void
gtk_text_view_preedit_start_handler (GtkIMContext *context,
GtkTextView *self)
{
gtk_text_buffer_delete_selection (self->priv->buffer, TRUE, self->priv->editable);
}
static void
gtk_text_view_preedit_changed_handler (GtkIMContext *context,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
char *str;
PangoAttrList *attrs;
int cursor_pos;
GtkTextIter iter;
priv = text_view->priv;
gtk_text_view_obscure_mouse_cursor (text_view);
gtk_text_buffer_get_iter_at_mark (priv->buffer, &iter,
gtk_text_buffer_get_insert (priv->buffer));
/* Keypress events are passed to input method even if cursor position is
* not editable; so beep here if it's multi-key input sequence, input
* method will be reset in when the event is handled by GTK.
*/
gtk_im_context_get_preedit_string (context, &str, &attrs, &cursor_pos);
if (str && str[0] && !gtk_text_iter_can_insert (&iter, priv->editable))
{
gtk_widget_error_bell (GTK_WIDGET (text_view));
goto out;
}
g_signal_emit (text_view, signals[PREEDIT_CHANGED], 0, str);
if (priv->layout)
gtk_text_layout_set_preedit_string (priv->layout, str, attrs, cursor_pos);
if (gtk_widget_has_focus (GTK_WIDGET (text_view)))
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (get_buffer (text_view)));
out:
pango_attr_list_unref (attrs);
g_free (str);
}
static gboolean
gtk_text_view_retrieve_surrounding_handler (GtkIMContext *context,
GtkTextView *text_view)
{
GtkTextIter start;
GtkTextIter end;
GtkTextIter start1;
GtkTextIter end1;
GtkTextIter start2;
GtkTextIter end2;
int cursor_pos;
int anchor_pos;
char *text;
char *pre;
char *sel;
char *post;
gboolean flip;
gtk_text_buffer_get_iter_at_mark (text_view->priv->buffer, &start,
gtk_text_buffer_get_insert (text_view->priv->buffer));
gtk_text_buffer_get_iter_at_mark (text_view->priv->buffer, &end,
gtk_text_buffer_get_selection_bound (text_view->priv->buffer));
flip = gtk_text_iter_compare (&start, &end) < 0;
gtk_text_iter_order (&start, &end);
start1 = start;
end1 = end;
gtk_text_iter_set_line_offset (&start1, 0);
gtk_text_iter_forward_to_line_end (&end1);
start2 = start;
gtk_text_iter_backward_word_starts (&start2, 3);
if (gtk_text_iter_compare (&start2, &start1) < 0)
start1 = start2;
end2 = end;
gtk_text_iter_forward_word_ends (&end2, 3);
if (gtk_text_iter_compare (&end2, &end1) > 0)
end1 = end2;
pre = gtk_text_iter_get_slice (&start1, &start);
sel = gtk_text_iter_get_slice (&start, &end);
post = gtk_text_iter_get_slice (&end, &end1);
if (flip)
{
anchor_pos = strlen (pre);
cursor_pos = anchor_pos + strlen (sel);
}
else
{
cursor_pos = strlen (pre);
anchor_pos = cursor_pos + strlen (sel);
}
text = g_strconcat (pre, sel, post, NULL);
g_free (pre);
g_free (sel);
g_free (post);
gtk_im_context_set_surrounding_with_selection (context, text, -1, cursor_pos, anchor_pos);
g_free (text);
return TRUE;
}
static gboolean
gtk_text_view_delete_surrounding_handler (GtkIMContext *context,
int offset,
int n_chars,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
GtkTextIter start;
GtkTextIter end;
priv = text_view->priv;
gtk_text_buffer_get_iter_at_mark (priv->buffer, &start,
gtk_text_buffer_get_insert (priv->buffer));
end = start;
gtk_text_iter_forward_chars (&start, offset);
gtk_text_iter_forward_chars (&end, offset + n_chars);
if (gtk_text_buffer_delete_interactive (priv->buffer, &start, &end,
priv->editable))
gtk_im_context_reset (context);
return TRUE;
}
static void
gtk_text_view_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data)
{
GtkTextView *text_view = GTK_TEXT_VIEW (data);
gboolean need_reset = FALSE;
gboolean has_selection;
if (mark == gtk_text_buffer_get_insert (buffer))
{
text_view->priv->virtual_cursor_x = -1;
text_view->priv->virtual_cursor_y = -1;
gtk_text_view_update_im_spot_location (text_view);
need_reset = TRUE;
}
else if (mark == gtk_text_buffer_get_selection_bound (buffer))
{
need_reset = TRUE;
}
if (need_reset)
{
gtk_text_view_reset_im_context (text_view);
gtk_text_view_update_handles (text_view);
has_selection = gtk_text_buffer_get_selection_bounds (get_buffer (text_view), NULL, NULL);
gtk_css_node_set_visible (text_view->priv->selection_node, has_selection);
}
}
static void
gtk_text_view_get_virtual_cursor_pos (GtkTextView *text_view,
GtkTextIter *cursor,
int *x,
int *y)
{
GtkTextViewPrivate *priv;
GtkTextIter insert;
GdkRectangle pos;
priv = text_view->priv;
if (cursor)
insert = *cursor;
else
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_insert (get_buffer (text_view)));
if ((x && priv->virtual_cursor_x == -1) ||
(y && priv->virtual_cursor_y == -1))
gtk_text_layout_get_cursor_locations (priv->layout, &insert, &pos, NULL);
if (x)
{
if (priv->virtual_cursor_x != -1)
*x = priv->virtual_cursor_x;
else
*x = pos.x;
}
if (y)
{
if (priv->virtual_cursor_y != -1)
*y = priv->virtual_cursor_y;
else
*y = pos.y + pos.height / 2;
}
}
static void
gtk_text_view_set_virtual_cursor_pos (GtkTextView *text_view,
int x,
int y)
{
GdkRectangle pos;
if (!text_view->priv->layout)
return;
if (x == -1 || y == -1)
gtk_text_view_get_cursor_locations (text_view, NULL, &pos, NULL);
text_view->priv->virtual_cursor_x = (x == -1) ? pos.x : x;
text_view->priv->virtual_cursor_y = (y == -1) ? pos.y + pos.height / 2 : y;
}
static void
hide_selection_bubble (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (priv->selection_bubble && gtk_widget_get_visible (priv->selection_bubble))
gtk_widget_hide (priv->selection_bubble);
}
static void
gtk_text_view_select_all (GtkWidget *widget,
gboolean select)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextBuffer *buffer;
GtkTextIter start_iter, end_iter, insert;
buffer = text_view->priv->buffer;
if (select)
{
gtk_text_buffer_get_bounds (buffer, &start_iter, &end_iter);
gtk_text_buffer_select_range (buffer, &start_iter, &end_iter);
}
else
{
gtk_text_buffer_get_iter_at_mark (buffer, &insert,
gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_move_mark_by_name (buffer, "selection_bound", &insert);
}
}
static gboolean
range_contains_editable_text (const GtkTextIter *start,
const GtkTextIter *end,
gboolean default_editability)
{
GtkTextIter iter = *start;
while (gtk_text_iter_compare (&iter, end) < 0)
{
if (gtk_text_iter_editable (&iter, default_editability))
return TRUE;
gtk_text_iter_forward_to_tag_toggle (&iter, NULL);
}
return FALSE;
}
static void
gtk_text_view_activate_clipboard_cut (GtkWidget *widget,
const char *action_name,
GVariant *parameter)
{
GtkTextView *self = GTK_TEXT_VIEW (widget);
g_signal_emit_by_name (self, "cut-clipboard");
hide_selection_bubble (self);
}
static void
gtk_text_view_activate_clipboard_copy (GtkWidget *widget,
const char *action_name,
GVariant *parameter)
{
GtkTextView *self = GTK_TEXT_VIEW (widget);
g_signal_emit_by_name (self, "copy-clipboard");
hide_selection_bubble (self);
}
static void
gtk_text_view_activate_clipboard_paste (GtkWidget *widget,
const char *action_name,
GVariant *parameter)
{
GtkTextView *self = GTK_TEXT_VIEW (widget);
g_signal_emit_by_name (self, "paste-clipboard");
hide_selection_bubble (self);
}
static void
gtk_text_view_activate_selection_select_all (GtkWidget *widget,
const char *action_name,
GVariant *parameter)
{
gtk_text_view_select_all (widget, TRUE);
}
static void
gtk_text_view_activate_selection_delete (GtkWidget *widget,
const char *action_name,
GVariant *parameter)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE,
text_view->priv->editable);
}
static void
gtk_text_view_activate_misc_insert_emoji (GtkWidget *widget,
const char *action_name,
GVariant *parameter)
{
gtk_text_view_insert_emoji (GTK_TEXT_VIEW (widget));
}
static void
gtk_text_view_update_clipboard_actions (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
GdkClipboard *clipboard;
gboolean have_selection;
gboolean can_paste, can_insert;
GtkTextIter iter, sel_start, sel_end;
clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view));
can_paste = gdk_content_formats_contain_gtype (gdk_clipboard_get_formats (clipboard), G_TYPE_STRING);
have_selection = gtk_text_buffer_get_selection_bounds (get_buffer (text_view),
&sel_start, &sel_end);
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&iter,
gtk_text_buffer_get_insert (get_buffer (text_view)));
can_insert = gtk_text_iter_can_insert (&iter, priv->editable);
gtk_widget_action_set_enabled (GTK_WIDGET (text_view), "clipboard.cut",
have_selection &&
range_contains_editable_text (&sel_start, &sel_end, priv->editable));
gtk_widget_action_set_enabled (GTK_WIDGET (text_view), "clipboard.copy",
have_selection);
gtk_widget_action_set_enabled (GTK_WIDGET (text_view), "clipboard.paste",
can_insert && can_paste);
gtk_widget_action_set_enabled (GTK_WIDGET (text_view), "selection.delete",
have_selection &&
range_contains_editable_text (&sel_start, &sel_end, priv->editable));
gtk_widget_action_set_enabled (GTK_WIDGET (text_view), "selection.select-all",
gtk_text_buffer_get_char_count (priv->buffer) > 0);
}
static void
gtk_text_view_update_emoji_action (GtkTextView *text_view)
{
gtk_widget_action_set_enabled (GTK_WIDGET (text_view), "misc.insert-emoji",
(gtk_text_view_get_input_hints (text_view) & GTK_INPUT_HINT_NO_EMOJI) == 0 &&
text_view->priv->editable);
}
static GMenuModel *
gtk_text_view_get_menu_model (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
GtkJoinedMenu *joined;
GMenu *menu, *section;
GMenuItem *item;
joined = gtk_joined_menu_new ();
menu = g_menu_new ();
section = g_menu_new ();
item = g_menu_item_new (_("Cu_t"), "clipboard.cut");
g_menu_item_set_attribute (item, "touch-icon", "s", "edit-cut-symbolic");
g_menu_append_item (section, item);
g_object_unref (item);
item = g_menu_item_new (_("_Copy"), "clipboard.copy");
g_menu_item_set_attribute (item, "touch-icon", "s", "edit-copy-symbolic");
g_menu_append_item (section, item);
g_object_unref (item);
item = g_menu_item_new (_("_Paste"), "clipboard.paste");
g_menu_item_set_attribute (item, "touch-icon", "s", "edit-paste-symbolic");
g_menu_append_item (section, item);
g_object_unref (item);
item = g_menu_item_new (_("_Delete"), "selection.delete");
g_menu_item_set_attribute (item, "touch-icon", "s", "edit-delete-symbolic");
g_menu_append_item (section, item);
g_object_unref (item);
g_menu_append_section (menu, NULL, G_MENU_MODEL (section));
g_object_unref (section);
section = g_menu_new ();
item = g_menu_item_new (_("_Undo"), "text.undo");
g_menu_item_set_attribute (item, "touch-icon", "s", "edit-undo-symbolic");
g_menu_append_item (section, item);
g_object_unref (item);
item = g_menu_item_new (_("_Redo"), "text.redo");
g_menu_item_set_attribute (item, "touch-icon", "s", "edit-redo-symbolic");
g_menu_append_item (section, item);
g_object_unref (item);
g_menu_append_section (menu, NULL, G_MENU_MODEL (section));
g_object_unref (section);
section = g_menu_new ();
item = g_menu_item_new (_("Select _All"), "selection.select-all");
g_menu_item_set_attribute (item, "touch-icon", "s", "edit-select-all-symbolic");
g_menu_append_item (section, item);
g_object_unref (item);
item = g_menu_item_new ( _("Insert _Emoji"), "misc.insert-emoji");
g_menu_item_set_attribute (item, "hidden-when", "s", "action-disabled");
g_menu_item_set_attribute (item, "touch-icon", "s", "face-smile-symbolic");
g_menu_append_item (section, item);
g_object_unref (item);
g_menu_append_section (menu, NULL, G_MENU_MODEL (section));
g_object_unref (section);
gtk_joined_menu_append_menu (joined, G_MENU_MODEL (menu));
g_object_unref (menu);
if (priv->extra_menu)
gtk_joined_menu_append_menu (joined, priv->extra_menu);
return G_MENU_MODEL (joined);
}
static void
gtk_text_view_do_popup (GtkTextView *text_view,
GdkEvent *trigger_event)
{
GtkTextViewPrivate *priv = text_view->priv;
if (!gtk_widget_get_realized (GTK_WIDGET (text_view)))
return;
gtk_text_view_update_clipboard_actions (text_view);
if (!priv->popup_menu)
{
GMenuModel *model;
model = gtk_text_view_get_menu_model (text_view);
priv->popup_menu = gtk_popover_menu_new_from_model (model);
gtk_css_node_insert_after (gtk_widget_get_css_node (GTK_WIDGET (text_view)),
gtk_widget_get_css_node (priv->popup_menu),
priv->text_window->css_node);
gtk_widget_set_parent (priv->popup_menu, GTK_WIDGET (text_view));
gtk_popover_set_position (GTK_POPOVER (priv->popup_menu), GTK_POS_BOTTOM);
gtk_popover_set_has_arrow (GTK_POPOVER (priv->popup_menu), FALSE);
gtk_widget_set_halign (priv->popup_menu, GTK_ALIGN_START);
g_object_unref (model);
}
if (trigger_event && gdk_event_triggers_context_menu (trigger_event))
{
GdkDevice *device;
GdkSeat *seat;
GdkRectangle rect = { 0, 0, 1, 1 };
device = gdk_event_get_device (trigger_event);
seat = gdk_event_get_seat (trigger_event);
if (device == gdk_seat_get_keyboard (seat))
device = gdk_seat_get_pointer (seat);
if (device)
{
GtkNative *native;
GdkSurface *surface;
double px, py;
double nx, ny;
native = gtk_widget_get_native (GTK_WIDGET (text_view));
surface = gtk_native_get_surface (native);
gdk_surface_get_device_position (surface, device, &px, &py, NULL);
gtk_native_get_surface_transform (native, &nx, &ny);
gtk_widget_translate_coordinates (GTK_WIDGET (gtk_widget_get_native (GTK_WIDGET (text_view))),
GTK_WIDGET (text_view),
px - nx, py - ny,
&px, &py);
rect.x = px;
rect.y = py;
}
gtk_popover_set_pointing_to (GTK_POPOVER (priv->popup_menu), &rect);
}
else
{
GtkTextBuffer *buffer;
GtkTextIter iter;
GdkRectangle iter_location;
GdkRectangle visible_rect;
gboolean is_visible;
buffer = get_buffer (text_view);
gtk_text_buffer_get_iter_at_mark (buffer, &iter,
gtk_text_buffer_get_insert (buffer));
gtk_text_view_get_iter_location (text_view, &iter, &iter_location);
gtk_text_view_get_visible_rect (text_view, &visible_rect);
is_visible = (iter_location.x + iter_location.width > visible_rect.x &&
iter_location.x < visible_rect.x + visible_rect.width &&
iter_location.y + iter_location.height > visible_rect.y &&
iter_location.y < visible_rect.y + visible_rect.height);
if (is_visible)
{
gtk_text_view_buffer_to_window_coords (text_view,
GTK_TEXT_WINDOW_WIDGET,
iter_location.x,
iter_location.y,
&iter_location.x,
&iter_location.y);
gtk_popover_set_pointing_to (GTK_POPOVER (priv->popup_menu), &iter_location);
}
}
gtk_popover_popup (GTK_POPOVER (priv->popup_menu));
}
static void
gtk_text_view_popup_menu (GtkWidget *widget,
const char *action_name,
GVariant *parameters)
{
gtk_text_view_do_popup (GTK_TEXT_VIEW (widget), NULL);
}
static void
gtk_text_view_get_selection_rect (GtkTextView *text_view,
cairo_rectangle_int_t *rect)
{
cairo_rectangle_int_t rect_cursor, rect_bound;
GtkTextIter cursor, bound;
GtkTextBuffer *buffer;
int x1, y1, x2, y2;
buffer = get_buffer (text_view);
gtk_text_buffer_get_iter_at_mark (buffer, &cursor,
gtk_text_buffer_get_insert (buffer));
gtk_text_buffer_get_iter_at_mark (buffer, &bound,
gtk_text_buffer_get_selection_bound (buffer));
gtk_text_view_get_cursor_locations (text_view, &cursor, &rect_cursor, NULL);
gtk_text_view_get_cursor_locations (text_view, &bound, &rect_bound, NULL);
x1 = MIN (rect_cursor.x, rect_bound.x);
x2 = MAX (rect_cursor.x, rect_bound.x);
y1 = MIN (rect_cursor.y, rect_bound.y);
y2 = MAX (rect_cursor.y + rect_cursor.height, rect_bound.y + rect_bound.height);
rect->x = x1;
rect->y = y1;
rect->width = x2 - x1;
rect->height = y2 - y1;
}
static void
show_or_hide_handles (GtkWidget *popover,
GParamSpec *pspec,
GtkTextView *text_view)
{
gboolean visible;
visible = gtk_widget_get_visible (popover);
text_view->priv->text_handles_enabled = !visible;
gtk_text_view_update_handles (text_view);
}
static void
append_bubble_item (GtkTextView *text_view,
GtkWidget *toolbar,
GMenuModel *model,
int index)
{
GtkWidget *item, *image;
GVariant *att;
const char *icon_name;
const char *action_name;
GMenuModel *link;
gboolean is_toggle_action = FALSE;
GtkActionMuxer *muxer;
gboolean enabled;
const GVariantType *param_type;
const GVariantType *state_type;
link = g_menu_model_get_item_link (model, index, "section");
if (link)
{
int i;
for (i = 0; i < g_menu_model_get_n_items (link); i++)
append_bubble_item (text_view, toolbar, link, i);
g_object_unref (link);
return;
}
att = g_menu_model_get_item_attribute_value (model, index, "touch-icon", G_VARIANT_TYPE_STRING);
if (att == NULL)
return;
icon_name = g_variant_get_string (att, NULL);
g_variant_unref (att);
att = g_menu_model_get_item_attribute_value (model, index, "action", G_VARIANT_TYPE_STRING);
if (att == NULL)
return;
action_name = g_variant_get_string (att, NULL);
g_variant_unref (att);
muxer = _gtk_widget_get_action_muxer (GTK_WIDGET (text_view), FALSE);
if (muxer)
{
gtk_action_muxer_query_action (muxer, action_name, &enabled, &param_type, &state_type, NULL, NULL);
if (!enabled)
return;
if (param_type == NULL &&
state_type != NULL &&
g_variant_type_equal (state_type, G_VARIANT_TYPE_BOOLEAN))
is_toggle_action = TRUE;
}
if (is_toggle_action)
item = gtk_toggle_button_new ();
else
item = gtk_button_new ();
gtk_widget_set_focus_on_click (item, FALSE);
image = gtk_image_new_from_icon_name (icon_name);
gtk_button_set_child (GTK_BUTTON (item), image);
gtk_widget_add_css_class (item, "image-button");
gtk_actionable_set_action_name (GTK_ACTIONABLE (item), action_name);
gtk_box_append (GTK_BOX (toolbar), item);
}
static gboolean
gtk_text_view_selection_bubble_popup_show (gpointer user_data)
{
GtkTextView *text_view = user_data;
GtkTextViewPrivate *priv = text_view->priv;
cairo_rectangle_int_t rect;
GtkWidget *box;
GtkWidget *toolbar;
GMenuModel *model;
int i;
gtk_text_view_update_clipboard_actions (text_view);
priv->selection_bubble_timeout_id = 0;
g_clear_pointer (&priv->selection_bubble, gtk_widget_unparent);
priv->selection_bubble = gtk_popover_new ();
gtk_widget_set_parent (priv->selection_bubble, GTK_WIDGET (text_view));
gtk_widget_add_css_class (priv->selection_bubble, "touch-selection");
gtk_popover_set_position (GTK_POPOVER (priv->selection_bubble), GTK_POS_BOTTOM);
gtk_popover_set_autohide (GTK_POPOVER (priv->selection_bubble), FALSE);
g_signal_connect (priv->selection_bubble, "notify::visible",
G_CALLBACK (show_or_hide_handles), text_view);
box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5);
gtk_widget_set_margin_start (box, 10);
gtk_widget_set_margin_end (box, 10);
gtk_widget_set_margin_top (box, 10);
gtk_widget_set_margin_bottom (box, 10);
toolbar = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_add_css_class (toolbar, "linked");
gtk_popover_set_child (GTK_POPOVER (priv->selection_bubble), box);
gtk_box_append (GTK_BOX (box), toolbar);
model = gtk_text_view_get_menu_model (text_view);
for (i = 0; i < g_menu_model_get_n_items (model); i++)
append_bubble_item (text_view, toolbar, model, i);
g_object_unref (model);
gtk_text_view_get_selection_rect (text_view, &rect);
rect.x -= priv->xoffset;
rect.y -= priv->yoffset;
_text_window_to_widget_coords (text_view, &rect.x, &rect.y);
rect.x -= 5;
rect.y -= 5;
rect.width += 10;
rect.height += 10;
gtk_popover_set_pointing_to (GTK_POPOVER (priv->selection_bubble), &rect);
gtk_widget_show (priv->selection_bubble);
return G_SOURCE_REMOVE;
}
static void
gtk_text_view_selection_bubble_popup_unset (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
priv = text_view->priv;
if (priv->selection_bubble)
gtk_widget_hide (priv->selection_bubble);
if (priv->selection_bubble_timeout_id)
{
g_source_remove (priv->selection_bubble_timeout_id);
priv->selection_bubble_timeout_id = 0;
}
}
static void
gtk_text_view_selection_bubble_popup_set (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
priv = text_view->priv;
if (priv->selection_bubble_timeout_id)
g_source_remove (priv->selection_bubble_timeout_id);
priv->selection_bubble_timeout_id = g_timeout_add (50, gtk_text_view_selection_bubble_popup_show, text_view);
gdk_source_set_static_name_by_id (priv->selection_bubble_timeout_id, "[gtk] gtk_text_view_selection_bubble_popup_cb");
}
/* Child GdkSurfaces */
static void
node_style_changed_cb (GtkCssNode *node,
GtkCssStyleChange *change,
GtkWidget *widget)
{
if (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_SIZE))
gtk_widget_queue_resize (widget);
else
gtk_widget_queue_draw (widget);
}
static void
update_node_ordering (GtkWidget *widget)
{
GtkTextViewPrivate *priv = GTK_TEXT_VIEW (widget)->priv;
GtkCssNode *widget_node, *sibling, *child_node;
if (priv->text_window == NULL)
return;
widget_node = gtk_widget_get_css_node (widget);
sibling = priv->text_window->css_node;
if (priv->left_child)
{
child_node = gtk_widget_get_css_node (GTK_WIDGET (priv->left_child));
gtk_css_node_insert_before (widget_node, child_node, sibling);
sibling = child_node;
}
if (priv->top_child)
{
child_node = gtk_widget_get_css_node (GTK_WIDGET (priv->top_child));
gtk_css_node_insert_before (widget_node, child_node, sibling);
}
sibling = priv->text_window->css_node;
if (priv->right_child)
{
child_node = gtk_widget_get_css_node (GTK_WIDGET (priv->right_child));
gtk_css_node_insert_after (widget_node, child_node, sibling);
sibling = child_node;
}
if (priv->bottom_child)
{
child_node = gtk_widget_get_css_node (GTK_WIDGET (priv->bottom_child));
gtk_css_node_insert_after (widget_node, child_node, sibling);
}
}
static GtkTextWindow*
text_window_new (GtkWidget *widget)
{
GtkTextWindow *win;
GtkCssNode *widget_node;
win = g_slice_new (GtkTextWindow);
win->type = GTK_TEXT_WINDOW_TEXT;
win->widget = widget;
win->allocation.width = 0;
win->allocation.height = 0;
win->allocation.x = 0;
win->allocation.y = 0;
widget_node = gtk_widget_get_css_node (widget);
win->css_node = gtk_css_node_new ();
gtk_css_node_set_parent (win->css_node, widget_node);
gtk_css_node_set_state (win->css_node, gtk_css_node_get_state (widget_node));
g_signal_connect_object (win->css_node, "style-changed", G_CALLBACK (node_style_changed_cb), widget, 0);
gtk_css_node_set_name (win->css_node, g_quark_from_static_string ("text"));
g_object_unref (win->css_node);
return win;
}
static void
text_window_free (GtkTextWindow *win)
{
gtk_css_node_set_parent (win->css_node, NULL);
g_slice_free (GtkTextWindow, win);
}
static void
text_window_size_allocate (GtkTextWindow *win,
GdkRectangle *rect)
{
win->allocation = *rect;
}
static int
text_window_get_width (GtkTextWindow *win)
{
return win->allocation.width;
}
static int
text_window_get_height (GtkTextWindow *win)
{
return win->allocation.height;
}
/* Windows */
/**
* gtk_text_view_buffer_to_window_coords:
* @text_view: a `GtkTextView`
* @win: a `GtkTextWindowType`
* @buffer_x: buffer x coordinate
* @buffer_y: buffer y coordinate
* @window_x: (out) (optional): window x coordinate return location
* @window_y: (out) (optional): window y coordinate return location
*
* Converts buffer coordinates to window coordinates.
*/
void
gtk_text_view_buffer_to_window_coords (GtkTextView *text_view,
GtkTextWindowType win,
int buffer_x,
int buffer_y,
int *window_x,
int *window_y)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
buffer_x -= priv->xoffset;
buffer_y -= priv->yoffset;
switch (win)
{
case GTK_TEXT_WINDOW_WIDGET:
buffer_x += priv->border_window_size.left;
buffer_y += priv->border_window_size.top;
break;
case GTK_TEXT_WINDOW_TEXT:
break;
case GTK_TEXT_WINDOW_LEFT:
buffer_x += priv->border_window_size.left;
break;
case GTK_TEXT_WINDOW_RIGHT:
buffer_x -= text_window_get_width (priv->text_window);
break;
case GTK_TEXT_WINDOW_TOP:
buffer_y += priv->border_window_size.top;
break;
case GTK_TEXT_WINDOW_BOTTOM:
buffer_y -= text_window_get_height (priv->text_window);
break;
default:
g_warning ("%s: Unknown GtkTextWindowType", G_STRFUNC);
break;
}
if (window_x)
*window_x = buffer_x;
if (window_y)
*window_y = buffer_y;
}
/**
* gtk_text_view_window_to_buffer_coords:
* @text_view: a `GtkTextView`
* @win: a `GtkTextWindowType`
* @window_x: window x coordinate
* @window_y: window y coordinate
* @buffer_x: (out) (optional): buffer x coordinate return location
* @buffer_y: (out) (optional): buffer y coordinate return location
*
* Converts coordinates on the window identified by @win to buffer
* coordinates.
*/
void
gtk_text_view_window_to_buffer_coords (GtkTextView *text_view,
GtkTextWindowType win,
int window_x,
int window_y,
int *buffer_x,
int *buffer_y)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
switch (win)
{
case GTK_TEXT_WINDOW_WIDGET:
window_x -= priv->border_window_size.left;
window_y -= priv->border_window_size.top;
break;
case GTK_TEXT_WINDOW_TEXT:
break;
case GTK_TEXT_WINDOW_LEFT:
window_x -= priv->border_window_size.left;
break;
case GTK_TEXT_WINDOW_RIGHT:
window_x += text_window_get_width (priv->text_window);
break;
case GTK_TEXT_WINDOW_TOP:
window_y -= priv->border_window_size.top;
break;
case GTK_TEXT_WINDOW_BOTTOM:
window_y += text_window_get_height (priv->text_window);
break;
default:
g_warning ("%s: Unknown GtkTextWindowType", G_STRFUNC);
break;
}
if (buffer_x)
*buffer_x = window_x + priv->xoffset;
if (buffer_y)
*buffer_y = window_y + priv->yoffset;
}
/*
* Child widgets
*/
static AnchoredChild *
anchored_child_new (GtkWidget *child,
GtkTextChildAnchor *anchor,
GtkTextLayout *layout)
{
AnchoredChild *vc;
vc = g_slice_new0 (AnchoredChild);
vc->link.data = vc;
vc->widget = g_object_ref (child);
vc->anchor = g_object_ref (anchor);
vc->from_top_of_line = 0;
vc->from_left_of_buffer = 0;
g_object_set_qdata (G_OBJECT (child), quark_text_view_child, vc);
gtk_text_child_anchor_register_child (anchor, child, layout);
return vc;
}
static void
anchored_child_free (AnchoredChild *child)
{
g_assert (child->link.prev == NULL);
g_assert (child->link.next == NULL);
g_object_set_qdata (G_OBJECT (child->widget), quark_text_view_child, NULL);
gtk_text_child_anchor_unregister_child (child->anchor, child->widget);
g_object_unref (child->anchor);
g_object_unref (child->widget);
g_slice_free (AnchoredChild, child);
}
static void
add_child (GtkTextView *text_view,
AnchoredChild *vc)
{
GtkTextViewPrivate *priv = text_view->priv;
g_queue_push_head_link (&priv->anchored_children, &vc->link);
gtk_css_node_set_parent (gtk_widget_get_css_node (vc->widget),
priv->text_window->css_node);
gtk_widget_set_parent (vc->widget, GTK_WIDGET (text_view));
}
/**
* gtk_text_view_add_child_at_anchor:
* @text_view: a `GtkTextView`
* @child: a `GtkWidget`
* @anchor: a `GtkTextChildAnchor` in the `GtkTextBuffer` for @text_view
*
* Adds a child widget in the text buffer, at the given @anchor.
*/
void
gtk_text_view_add_child_at_anchor (GtkTextView *text_view,
GtkWidget *child,
GtkTextChildAnchor *anchor)
{
AnchoredChild *vc;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor));
g_return_if_fail (gtk_widget_get_parent (child) == NULL);
gtk_text_view_ensure_layout (text_view);
vc = anchored_child_new (child, anchor, text_view->priv->layout);
add_child (text_view, vc);
g_assert (vc->widget == child);
g_assert (gtk_widget_get_parent (child) == GTK_WIDGET (text_view));
}
static void
ensure_child (GtkTextView *text_view,
GtkTextViewChild **child,
GtkTextWindowType window_type)
{
GtkCssNode *css_node;
GtkWidget *new_child;
if (*child != NULL)
return;
new_child = gtk_text_view_child_new (window_type);
css_node = gtk_widget_get_css_node (new_child);
gtk_css_node_set_parent (css_node,
gtk_widget_get_css_node (GTK_WIDGET (text_view)));
*child = g_object_ref (GTK_TEXT_VIEW_CHILD (new_child));
gtk_widget_set_parent (GTK_WIDGET (new_child), GTK_WIDGET (text_view));
}
/**
* gtk_text_view_add_overlay:
* @text_view: a `GtkTextView`
* @child: a `GtkWidget`
* @xpos: X position of child in window coordinates
* @ypos: Y position of child in window coordinates
*
* Adds @child at a fixed coordinate in the `GtkTextView`'s text window.
*
* The @xpos and @ypos must be in buffer coordinates (see
* [method@Gtk.TextView.get_iter_location] to convert to
* buffer coordinates).
*
* @child will scroll with the text view.
*
* If instead you want a widget that will not move with the
* `GtkTextView` contents see `GtkOverlay`.
*/
void
gtk_text_view_add_overlay (GtkTextView *text_view,
GtkWidget *child,
int xpos,
int ypos)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (gtk_widget_get_parent (child) == NULL);
ensure_child (text_view,
&text_view->priv->center_child,
GTK_TEXT_WINDOW_TEXT);
gtk_text_view_child_add_overlay (text_view->priv->center_child,
child, xpos, ypos);
}
/**
* gtk_text_view_move_overlay:
* @text_view: a `GtkTextView`
* @child: a widget already added with [method@Gtk.TextView.add_overlay]
* @xpos: new X position in buffer coordinates
* @ypos: new Y position in buffer coordinates
*
* Updates the position of a child.
*
* See [method@Gtk.TextView.add_overlay].
*/
void
gtk_text_view_move_overlay (GtkTextView *text_view,
GtkWidget *child,
int xpos,
int ypos)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (text_view->priv->center_child != NULL);
g_return_if_fail (gtk_widget_get_parent (child) == (GtkWidget *)text_view->priv->center_child);
gtk_text_view_child_move_overlay (text_view->priv->center_child,
child, xpos, ypos);
}
/* Iterator operations */
/**
* gtk_text_view_forward_display_line:
* @text_view: a `GtkTextView`
* @iter: a `GtkTextIter`
*
* Moves the given @iter forward by one display (wrapped) line.
*
* A display line is different from a paragraph. Paragraphs are
* separated by newlines or other paragraph separator characters.
* Display lines are created by line-wrapping a paragraph. If
* wrapping is turned off, display lines and paragraphs will be the
* same. Display lines are divided differently for each view, since
* they depend on the view’s width; paragraphs are the same in all
* views, since they depend on the contents of the `GtkTextBuffer`.
*
* Returns: %TRUE if @iter was moved and is not on the end iterator
*/
gboolean
gtk_text_view_forward_display_line (GtkTextView *text_view,
GtkTextIter *iter)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_move_iter_to_next_line (text_view->priv->layout, iter);
}
/**
* gtk_text_view_backward_display_line:
* @text_view: a `GtkTextView`
* @iter: a `GtkTextIter`
*
* Moves the given @iter backward by one display (wrapped) line.
*
* A display line is different from a paragraph. Paragraphs are
* separated by newlines or other paragraph separator characters.
* Display lines are created by line-wrapping a paragraph. If
* wrapping is turned off, display lines and paragraphs will be the
* same. Display lines are divided differently for each view, since
* they depend on the view’s width; paragraphs are the same in all
* views, since they depend on the contents of the `GtkTextBuffer`.
*
* Returns: %TRUE if @iter was moved and is not on the end iterator
*/
gboolean
gtk_text_view_backward_display_line (GtkTextView *text_view,
GtkTextIter *iter)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_move_iter_to_previous_line (text_view->priv->layout, iter);
}
/**
* gtk_text_view_forward_display_line_end:
* @text_view: a `GtkTextView`
* @iter: a `GtkTextIter`
*
* Moves the given @iter forward to the next display line end.
*
* A display line is different from a paragraph. Paragraphs are
* separated by newlines or other paragraph separator characters.
* Display lines are created by line-wrapping a paragraph. If
* wrapping is turned off, display lines and paragraphs will be the
* same. Display lines are divided differently for each view, since
* they depend on the view’s width; paragraphs are the same in all
* views, since they depend on the contents of the `GtkTextBuffer`.
*
* Returns: %TRUE if @iter was moved and is not on the end iterator
*/
gboolean
gtk_text_view_forward_display_line_end (GtkTextView *text_view,
GtkTextIter *iter)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_move_iter_to_line_end (text_view->priv->layout, iter, 1);
}
/**
* gtk_text_view_backward_display_line_start:
* @text_view: a `GtkTextView`
* @iter: a `GtkTextIter`
*
* Moves the given @iter backward to the next display line start.
*
* A display line is different from a paragraph. Paragraphs are
* separated by newlines or other paragraph separator characters.
* Display lines are created by line-wrapping a paragraph. If
* wrapping is turned off, display lines and paragraphs will be the
* same. Display lines are divided differently for each view, since
* they depend on the view’s width; paragraphs are the same in all
* views, since they depend on the contents of the `GtkTextBuffer`.
*
* Returns: %TRUE if @iter was moved and is not on the end iterator
*/
gboolean
gtk_text_view_backward_display_line_start (GtkTextView *text_view,
GtkTextIter *iter)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_move_iter_to_line_end (text_view->priv->layout, iter, -1);
}
/**
* gtk_text_view_starts_display_line:
* @text_view: a `GtkTextView`
* @iter: a `GtkTextIter`
*
* Determines whether @iter is at the start of a display line.
*
* See [method@Gtk.TextView.forward_display_line] for an
* explanation of display lines vs. paragraphs.
*
* Returns: %TRUE if @iter begins a wrapped line
*/
gboolean
gtk_text_view_starts_display_line (GtkTextView *text_view,
const GtkTextIter *iter)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_iter_starts_line (text_view->priv->layout, iter);
}
/**
* gtk_text_view_move_visually:
* @text_view: a `GtkTextView`
* @iter: a `GtkTextIter`
* @count: number of characters to move (negative moves left,
* positive moves right)
*
* Move the iterator a given number of characters visually, treating
* it as the strong cursor position.
*
* If @count is positive, then the new strong cursor position will
* be @count positions to the right of the old cursor position.
* If @count is negative then the new strong cursor position will
* be @count positions to the left of the old cursor position.
*
* In the presence of bi-directional text, the correspondence
* between logical and visual order will depend on the direction
* of the current run, and there may be jumps when the cursor
* is moved off of the end of a run.
*
* Returns: %TRUE if @iter moved and is not on the end iterator
*/
gboolean
gtk_text_view_move_visually (GtkTextView *text_view,
GtkTextIter *iter,
int count)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_move_iter_visually (text_view->priv->layout, iter, count);
}
/**
* gtk_text_view_set_input_purpose: (attributes org.gtk.Method.set_property=input-purpose)
* @text_view: a `GtkTextView`
* @purpose: the purpose
*
* Sets the `input-purpose` of the `GtkTextView`.
*
* The `input-purpose` can be used by on-screen keyboards
* and other input methods to adjust their behaviour.
*/
void
gtk_text_view_set_input_purpose (GtkTextView *text_view,
GtkInputPurpose purpose)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (gtk_text_view_get_input_purpose (text_view) != purpose)
{
g_object_set (G_OBJECT (text_view->priv->im_context),
"input-purpose", purpose,
NULL);
g_object_notify (G_OBJECT (text_view), "input-purpose");
}
}
/**
* gtk_text_view_get_input_purpose: (attributes org.gtk.Method.get_property=input-purpose)
* @text_view: a `GtkTextView`
*
* Gets the `input-purpose` of the `GtkTextView`.
*/
GtkInputPurpose
gtk_text_view_get_input_purpose (GtkTextView *text_view)
{
GtkInputPurpose purpose;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), GTK_INPUT_PURPOSE_FREE_FORM);
g_object_get (G_OBJECT (text_view->priv->im_context),
"input-purpose", &purpose,
NULL);
return purpose;
}
/**
* gtk_text_view_set_input_hints: (attributes org.gtk.Method.set_property=input-hints)
* @text_view: a `GtkTextView`
* @hints: the hints
*
* Sets the `input-hints` of the `GtkTextView`.
*
* The `input-hints` allow input methods to fine-tune
* their behaviour.
*/
void
gtk_text_view_set_input_hints (GtkTextView *text_view,
GtkInputHints hints)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (gtk_text_view_get_input_hints (text_view) != hints)
{
g_object_set (G_OBJECT (text_view->priv->im_context),
"input-hints", hints,
NULL);
g_object_notify (G_OBJECT (text_view), "input-hints");
gtk_text_view_update_emoji_action (text_view);
}
}
/**
* gtk_text_view_get_input_hints: (attributes org.gtk.Method.get_property=input-hints)
* @text_view: a `GtkTextView`
*
* Gets the `input-hints` of the `GtkTextView`.
*/
GtkInputHints
gtk_text_view_get_input_hints (GtkTextView *text_view)
{
GtkInputHints hints;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), GTK_INPUT_HINT_NONE);
g_object_get (G_OBJECT (text_view->priv->im_context),
"input-hints", &hints,
NULL);
return hints;
}
/**
* gtk_text_view_set_monospace: (attributes org.gtk.Method.set_property=monospace)
* @text_view: a `GtkTextView`
* @monospace: %TRUE to request monospace styling
*
* Sets whether the `GtkTextView` should display text in
* monospace styling.
*/
void
gtk_text_view_set_monospace (GtkTextView *text_view,
gboolean monospace)
{
gboolean has_monospace;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
has_monospace = gtk_text_view_get_monospace (text_view);
if (has_monospace != monospace)
{
if (monospace)
gtk_widget_add_css_class (GTK_WIDGET (text_view), "monospace");
else
gtk_widget_remove_css_class (GTK_WIDGET (text_view), "monospace");
g_object_notify (G_OBJECT (text_view), "monospace");
}
}
/**
* gtk_text_view_get_monospace: (attributes org.gtk.Method.get_property=monospace)
* @text_view: a `GtkTextView`
*
* Gets whether the `GtkTextView` uses monospace styling.
*
* Return: %TRUE if monospace fonts are desired
*/
gboolean
gtk_text_view_get_monospace (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
return gtk_widget_has_css_class (GTK_WIDGET (text_view), "monospace");
}
static void
emoji_picked (GtkEmojiChooser *chooser,
const char *text,
GtkTextView *self)
{
GtkTextBuffer *buffer;
buffer = get_buffer (self);
gtk_text_buffer_begin_user_action (buffer);
gtk_text_buffer_delete_selection (buffer, TRUE, TRUE);
gtk_text_buffer_insert_at_cursor (buffer, text, -1);
gtk_text_buffer_end_user_action (buffer);
}
static void
gtk_text_view_insert_emoji (GtkTextView *text_view)
{
GtkWidget *chooser;
GtkTextIter iter;
GdkRectangle rect;
GdkRectangle rect2;
GtkTextBuffer *buffer;
if (gtk_widget_get_ancestor (GTK_WIDGET (text_view), GTK_TYPE_EMOJI_CHOOSER) != NULL)
return;
chooser = GTK_WIDGET (g_object_get_data (G_OBJECT (text_view), "gtk-emoji-chooser"));
if (!chooser)
{
chooser = gtk_emoji_chooser_new ();
g_object_set_data (G_OBJECT (text_view), "gtk-emoji-chooser", chooser);
gtk_widget_set_parent (chooser, GTK_WIDGET (text_view));
g_signal_connect (chooser, "emoji-picked", G_CALLBACK (emoji_picked), text_view);
g_signal_connect_swapped (chooser, "hide", G_CALLBACK (gtk_widget_grab_focus), text_view);
}
buffer = get_buffer (text_view);
gtk_text_buffer_get_iter_at_mark (buffer, &iter,
gtk_text_buffer_get_insert (buffer));
gtk_text_view_get_iter_location (text_view, &iter, (GdkRectangle *) &rect);
rect.width = MAX (rect.width, 1);
rect.height = MAX (rect.height, 1);
gtk_text_view_buffer_to_window_coords (text_view, GTK_TEXT_WINDOW_TEXT,
rect.x, rect.y, &rect.x, &rect.y);
_text_window_to_widget_coords (text_view, &rect.x, &rect.y);
gtk_text_view_get_visible_rect (text_view, &rect2);
gtk_text_view_buffer_to_window_coords (text_view, GTK_TEXT_WINDOW_TEXT,
rect2.x, rect2.y, &rect2.x, &rect2.y);
_text_window_to_widget_coords (text_view, &rect2.x, &rect2.y);
if (!gdk_rectangle_intersect (&rect2, &rect, &rect))
{
rect.x = rect2.width / 2;
rect.y = rect2.height / 2;
rect.width = 0;
rect.height = 0;
}
gtk_popover_set_pointing_to (GTK_POPOVER (chooser), &rect);
gtk_popover_popup (GTK_POPOVER (chooser));
}
/**
* gtk_text_view_set_extra_menu: (attributes org.gtk.Method.set_property=extra-menu)
* @text_view: a `GtkTextView`
* @model: (nullable): a `GMenuModel`
*
* Sets a menu model to add when constructing the context
* menu for @text_view.
*
* You can pass %NULL to remove a previously set extra menu.
*/
void
gtk_text_view_set_extra_menu (GtkTextView *text_view,
GMenuModel *model)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (g_set_object (&priv->extra_menu, model))
{
g_clear_pointer (&priv->popup_menu, gtk_widget_unparent);
g_object_notify (G_OBJECT (text_view), "extra-menu");
}
}
/**
* gtk_text_view_get_extra_menu: (attributes org.gtk.Method.get_property=extra-menu)
* @text_view: a `GtkTextView`
*
* Gets the menu model that gets added to the context menu
* or %NULL if none has been set.
*
* Returns: (transfer none): the menu model
*/
GMenuModel *
gtk_text_view_get_extra_menu (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
return priv->extra_menu;
}
static void
gtk_text_view_real_undo (GtkWidget *widget,
const char *action_name,
GVariant *parameters)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
if (gtk_text_view_get_editable (text_view))
{
gtk_text_buffer_undo (text_view->priv->buffer);
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (text_view->priv->buffer));
}
}
static void
gtk_text_view_real_redo (GtkWidget *widget,
const char *action_name,
GVariant *parameters)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
if (gtk_text_view_get_editable (text_view))
{
gtk_text_buffer_redo (text_view->priv->buffer);
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_insert (text_view->priv->buffer));
}
}
static void
gtk_text_view_buffer_notify_redo (GtkTextBuffer *buffer,
GParamSpec *pspec,
GtkTextView *view)
{
gtk_widget_action_set_enabled (GTK_WIDGET (view),
"text.redo",
(gtk_text_view_get_editable (view) &&
gtk_text_buffer_get_can_redo (buffer)));
}
static void
gtk_text_view_buffer_notify_undo (GtkTextBuffer *buffer,
GParamSpec *pspec,
GtkTextView *view)
{
gtk_widget_action_set_enabled (GTK_WIDGET (view),
"text.undo",
(gtk_text_view_get_editable (view) &&
gtk_text_buffer_get_can_undo (buffer)));
}
/**
* gtk_text_view_get_ltr_context:
* @text_view: a `GtkTextView`
*
* Gets the `PangoContext` that is used for rendering LTR directed
* text layouts.
*
* The context may be replaced when CSS changes occur.
*
* Returns: (transfer none): a `PangoContext`
*
* Since: 4.4
*/
PangoContext *
gtk_text_view_get_ltr_context (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
gtk_text_view_ensure_layout (text_view);
return text_view->priv->layout->ltr_context;
}
/**
* gtk_text_view_get_rtl_context:
* @text_view: a `GtkTextView`
*
* Gets the `PangoContext` that is used for rendering RTL directed
* text layouts.
*
* The context may be replaced when CSS changes occur.
*
* Returns: (transfer none): a `PangoContext`
*
* Since: 4.4
*/
PangoContext *
gtk_text_view_get_rtl_context (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
gtk_text_view_ensure_layout (text_view);
return text_view->priv->layout->rtl_context;
}
GtkEventController *
gtk_text_view_get_key_controller (GtkTextView *text_view)
{
return text_view->priv->key_controller;
}
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