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5f913e9558
gtk2/gtk/gtktextview.c
Jordan Yelloz 5f913e9558 gtktextview: Fixed arrow key crash. 
When pressing the keyboard arrows to move around when the insertion point is
hidden, it causes an assertion error in blink_cb.

Insertion point blinks should only be scheduled when blinking is enabled and the
insertion point is visible.

Closes #4275
2021-09-21 09:14:22 -07:00

10152 lines
327 KiB
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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 */
GtkTextMark *dnd_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",
P_("Pixels Above Lines"),
P_("Pixels of blank space above paragraphs"),
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",
P_("Pixels Below Lines"),
P_("Pixels of blank space below paragraphs"),
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",
P_("Pixels Inside Wrap"),
P_("Pixels of blank space between wrapped lines in a paragraph"),
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",
P_("Editable"),
P_("Whether the text can be modified by the user"),
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",
P_("Wrap Mode"),
P_("Whether to wrap lines never, at word boundaries, or at character boundaries"),
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",
P_("Justification"),
P_("Left, right, or center justification"),
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",
P_("Left Margin"),
P_("Width of the left margin in pixels"),
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",
P_("Right Margin"),
P_("Width of the right margin in pixels"),
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",
P_("Top Margin"),
P_("Height of the top margin in pixels"),
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",
P_("Bottom Margin"),
P_("Height of the bottom margin in pixels"),
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",
P_("Indent"),
P_("Amount to indent the paragraph, in pixels"),
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",
P_("Tabs"),
P_("Custom tabs for this text"),
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",
P_("Cursor Visible"),
P_("If the insertion cursor is shown"),
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",
P_("Buffer"),
P_("The buffer which is displayed"),
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",
P_("Overwrite mode"),
P_("Whether entered text overwrites existing contents"),
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",
P_("Accepts tab"),
P_("Whether Tab will result in a tab character being entered"),
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",
P_("IM module"),
P_("Which IM module should be used"),
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",
P_("Purpose"),
P_("Purpose of the text field"),
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",
P_("hints"),
P_("Hints for the text field behaviour"),
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",
P_("Monospace"),
P_("Whether to use a monospace font"),
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",
P_("Extra menu"),
P_("Menu model to append to the context menu"),
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_signal (widget_class,
GDK_KEY_period, GDK_CONTROL_MASK,
"insert-emoji",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_semicolon, GDK_CONTROL_MASK,
"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 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;
allocation->y = buffer_y - text_view->priv->yoffset;
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)
{
GtkAllocation allocation;
gtk_text_view_compute_child_allocation (text_view, vc, &allocation);
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
gtk_anchored_child_allocated (GtkTextLayout *layout,
GtkWidget *child,
int x,
int y,
gpointer data)
{
AnchoredChild *vc = NULL;
GtkTextView *text_view = data;
/* 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);
}
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;
/* 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);
}
}
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;
/* 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);
}
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;
GtkTextMark *insert;
GtkTextIter iter;
gboolean can_insert;
insert = gtk_text_buffer_get_insert (get_buffer (text_view));
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, insert);
can_insert = gtk_text_iter_can_insert (&iter, priv->editable);
priv->need_im_reset = TRUE;
if (!can_insert)
gtk_text_view_reset_im_context (text_view);
}
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);
/* Propagate exposes to all unanchored children.
* Anchored children are handled in gtk_text_view_paint().
*/
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;
}
gtk_text_view_reset_im_context (text_view);
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);
}
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;
gtk_text_view_reset_im_context (text_view);
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))
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));
}
}
static void
gtk_text_view_backspace (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
GtkTextIter insert;
priv = text_view->priv;
gtk_text_view_reset_im_context (text_view);
/* Backspace deletes the selection, if one exists */
if (gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE,
priv->editable))
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)));
}
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)
{
if (gdk_drag_get_selected_action (drag) == GDK_ACTION_MOVE)
gtk_text_buffer_delete_selection (self->priv->buffer, TRUE, self->priv->editable);
self->priv->drag = NULL;
}
static void
dnd_cancel_cb (GdkDrag *drag,
GdkDragCancelReason reason,
GtkTextView *self)
{
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->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);
}
static void
gtk_text_view_commit_text (GtkTextView *text_view,
const char *str)
{
GtkTextViewPrivate *priv;
gboolean had_selection;
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),
NULL, NULL);
gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE,
priv->editable);
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;
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);
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);
gtk_text_buffer_delete_interactive (priv->buffer, &start, &end,
priv->editable);
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);
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);
}
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);
}
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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