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gtk2/gtk/gtktextview.c
Ignacio Casal Quinteiro 391917063e textview: do not destroy the layout in unrealize 
Now instead of invalidating when we create the layout we invalidate
when we realize the widget and we remove the invalidation when
unrealizing. It was pointless too destroying the layout in unrealize
as at the end what we just wanted was to remove the invalidation idles.
2011-06-12 17:54:07 +02:00

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/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */
/* GTK - The GIMP Toolkit
* gtktextview.c Copyright (C) 2000 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* 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 <string.h>
#define GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API
#include "gtkbindings.h"
#include "gtkdnd.h"
#include "gtkimagemenuitem.h"
#include "gtkintl.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtkseparatormenuitem.h"
#include "gtksettings.h"
#include "gtkselectionprivate.h"
#include "gtkstock.h"
#include "gtktextbufferrichtext.h"
#include "gtktextdisplay.h"
#include "gtktextview.h"
#include "gtkimmulticontext.h"
#include "gtkprivate.h"
#include "gtktextutil.h"
#include "gtkwidgetprivate.h"
#include "gtkwindow.h"
#include "gtkscrollable.h"
#include "gtktypebuiltins.h"
/**
* SECTION:gtktextview
* @Short_description: Widget that displays a GtkTextBuffer
* @Title: GtkTextView
* @See_also: #GtkTextBuffer, #GtkTextIter
*
* You may wish to begin by reading the <link linkend="TextWidget">text widget
* conceptual overview</link> which gives an overview of all the objects and data
* types related to the text widget and how they work together.
*/
/* 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_window_scroll() to reflect the new adjustment value
* - validate the lines that were moved onscreen
* - gdk_window_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
#define GTK_TEXT_VIEW_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_TEXT_VIEW, GtkTextViewPrivate))
typedef struct _GtkTextWindow GtkTextWindow;
typedef struct _GtkTextPendingScroll GtkTextPendingScroll;
struct _GtkTextViewPrivate
{
GtkTextLayout *layout;
GtkTextBuffer *buffer;
guint blink_time; /* time in msec the cursor has blinked since last user event */
guint im_spot_idle;
gchar *im_module;
GdkDevice *grab_device;
GdkDevice *dnd_device;
gulong selection_drag_handler;
GtkTextWindow *text_window;
GtkTextWindow *left_window;
GtkTextWindow *right_window;
GtkTextWindow *top_window;
GtkTextWindow *bottom_window;
GtkAdjustment *hadjustment;
GtkAdjustment *vadjustment;
gint xoffset; /* Offsets between widget coordinates and buffer coordinates */
gint yoffset;
gint width; /* Width and height of the buffer */
gint height;
/* This is used to monitor the overall size request
* and decide whether we need to queue resizes when
* the buffer content changes.
*
* FIXME: This could be done in a simpler way by
* consulting the above width/height of the buffer + some
* padding values, however all of this request code needs
* to be changed to use GtkWidget Iface and deserves
* more attention.
*/
GtkRequisition cached_size_request;
/* 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.
*/
gint virtual_cursor_x; /* -1 means use actual cursor position */
gint virtual_cursor_y; /* -1 means use actual cursor position */
GtkTextMark *first_para_mark; /* Mark at the beginning of the first onscreen paragraph */
gint first_para_pixels; /* Offset of top of screen in the first onscreen paragraph */
guint blink_timeout;
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 */
gint pending_place_cursor_button;
GtkTextMark *dnd_mark;
GtkIMContext *im_context;
GtkWidget *popup_menu;
gint drag_start_x;
gint drag_start_y;
GSList *children;
GtkTextPendingScroll *pending_scroll;
/* Default style settings */
gint pixels_above_lines;
gint pixels_below_lines;
gint pixels_inside_wrap;
GtkWrapMode wrap_mode;
GtkJustification justify;
gint left_margin;
gint right_margin;
gint indent;
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;
guint width_changed : 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;
/* GtkScrollablePolicy needs to be checked when
* driving the scrollable adjustment values */
guint hscroll_policy : 1;
guint vscroll_policy : 1;
};
struct _GtkTextPendingScroll
{
GtkTextMark *mark;
gdouble within_margin;
gboolean use_align;
gdouble xalign;
gdouble yalign;
};
enum
{
POPULATE_POPUP,
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,
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_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
};
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_destroy (GtkWidget *widget);
static void gtk_text_view_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_text_view_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_text_view_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_text_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_text_view_realize (GtkWidget *widget);
static void gtk_text_view_unrealize (GtkWidget *widget);
static void gtk_text_view_style_updated (GtkWidget *widget);
static void gtk_text_view_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction);
static void gtk_text_view_grab_notify (GtkWidget *widget,
gboolean was_grabbed);
static void gtk_text_view_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state);
static gint gtk_text_view_event (GtkWidget *widget,
GdkEvent *event);
static gint gtk_text_view_key_press_event (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_text_view_key_release_event (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_text_view_button_press_event (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_text_view_button_release_event (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_text_view_focus_in_event (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_text_view_focus_out_event (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_text_view_motion_event (GtkWidget *widget,
GdkEventMotion *event);
static gint gtk_text_view_draw (GtkWidget *widget,
cairo_t *cr);
static void gtk_text_view_draw_focus (GtkWidget *widget,
cairo_t *cr);
static gboolean gtk_text_view_focus (GtkWidget *widget,
GtkDirectionType direction);
static void gtk_text_view_select_all (GtkWidget *widget,
gboolean select);
/* Source side drag signals */
static void gtk_text_view_drag_begin (GtkWidget *widget,
GdkDragContext *context);
static void gtk_text_view_drag_end (GtkWidget *widget,
GdkDragContext *context);
static void gtk_text_view_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time);
static void gtk_text_view_drag_data_delete (GtkWidget *widget,
GdkDragContext *context);
/* Target side drag signals */
static void gtk_text_view_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time);
static gboolean gtk_text_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static gboolean gtk_text_view_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static void gtk_text_view_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time);
static gboolean gtk_text_view_popup_menu (GtkWidget *widget);
static void gtk_text_view_move_cursor (GtkTextView *text_view,
GtkMovementStep step,
gint count,
gboolean extend_selection);
static void gtk_text_view_move_viewport (GtkTextView *text_view,
GtkScrollStep step,
gint count);
static void gtk_text_view_set_anchor (GtkTextView *text_view);
static gboolean gtk_text_view_scroll_pages (GtkTextView *text_view,
gint count,
gboolean extend_selection);
static gboolean gtk_text_view_scroll_hpages(GtkTextView *text_view,
gint count,
gboolean extend_selection);
static void gtk_text_view_insert_at_cursor (GtkTextView *text_view,
const gchar *str);
static void gtk_text_view_delete_from_cursor (GtkTextView *text_view,
GtkDeleteType type,
gint 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,
GdkEventButton *event);
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,
GdkEventMotion *event);
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 gchar *str,
GtkTextView *text_view);
static void gtk_text_view_commit_text (GtkTextView *text_view,
const gchar *text);
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,
gint offset,
gint 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_target_list_notify (GtkTextBuffer *buffer,
const GParamSpec *pspec,
gpointer data);
static void gtk_text_view_paste_done_handler (GtkTextBuffer *buffer,
GtkClipboard *clipboard,
gpointer data);
static void gtk_text_view_get_virtual_cursor_pos (GtkTextView *text_view,
GtkTextIter *cursor,
gint *x,
gint *y);
static void gtk_text_view_set_virtual_cursor_pos (GtkTextView *text_view,
gint x,
gint y);
static void gtk_text_view_do_popup (GtkTextView *text_view,
GdkEventButton *event);
static void cancel_pending_scroll (GtkTextView *text_view);
static void gtk_text_view_queue_scroll (GtkTextView *text_view,
GtkTextMark *mark,
gdouble within_margin,
gboolean use_align,
gdouble xalign,
gdouble 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);
/* Container methods */
static void gtk_text_view_add (GtkContainer *container,
GtkWidget *child);
static void gtk_text_view_remove (GtkContainer *container,
GtkWidget *child);
static void gtk_text_view_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
/* FIXME probably need the focus methods. */
typedef struct _GtkTextViewChild GtkTextViewChild;
struct _GtkTextViewChild
{
GtkWidget *widget;
GtkTextChildAnchor *anchor;
gint from_top_of_line;
gint from_left_of_buffer;
/* These are ignored if anchor != NULL */
GtkTextWindowType type;
gint x;
gint y;
};
static GtkTextViewChild* text_view_child_new_anchored (GtkWidget *child,
GtkTextChildAnchor *anchor,
GtkTextLayout *layout);
static GtkTextViewChild* text_view_child_new_window (GtkWidget *child,
GtkTextWindowType type,
gint x,
gint y);
static void text_view_child_free (GtkTextViewChild *child);
static void text_view_child_set_parent_window (GtkTextView *text_view,
GtkTextViewChild *child);
struct _GtkTextWindow
{
GtkTextWindowType type;
GtkWidget *widget;
GdkWindow *window;
GdkWindow *bin_window;
GtkRequisition requisition;
GdkRectangle allocation;
};
static GtkTextWindow *text_window_new (GtkTextWindowType type,
GtkWidget *widget,
gint width_request,
gint height_request);
static void text_window_free (GtkTextWindow *win);
static void text_window_realize (GtkTextWindow *win,
GtkWidget *widget);
static void text_window_unrealize (GtkTextWindow *win);
static void text_window_size_allocate (GtkTextWindow *win,
GdkRectangle *rect);
static void text_window_scroll (GtkTextWindow *win,
gint dx,
gint dy);
static void text_window_invalidate_rect (GtkTextWindow *win,
GdkRectangle *rect);
static void text_window_invalidate_cursors (GtkTextWindow *win);
static gint text_window_get_width (GtkTextWindow *win);
static gint text_window_get_height (GtkTextWindow *win);
static guint signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkTextView, gtk_text_view, GTK_TYPE_CONTAINER,
G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
static void
add_move_binding (GtkBindingSet *binding_set,
guint keyval,
guint modmask,
GtkMovementStep step,
gint count)
{
g_assert ((modmask & GDK_SHIFT_MASK) == 0);
gtk_binding_entry_add_signal (binding_set, keyval, modmask,
"move-cursor", 3,
G_TYPE_ENUM, step,
G_TYPE_INT, count,
G_TYPE_BOOLEAN, FALSE);
/* Selection-extending version */
gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK,
"move-cursor", 3,
G_TYPE_ENUM, step,
G_TYPE_INT, count,
G_TYPE_BOOLEAN, TRUE);
}
static void
gtk_text_view_class_init (GtkTextViewClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
GtkBindingSet *binding_set;
/* 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;
widget_class->destroy = gtk_text_view_destroy;
widget_class->realize = gtk_text_view_realize;
widget_class->unrealize = gtk_text_view_unrealize;
widget_class->style_updated = gtk_text_view_style_updated;
widget_class->direction_changed = gtk_text_view_direction_changed;
widget_class->grab_notify = gtk_text_view_grab_notify;
widget_class->state_flags_changed = gtk_text_view_state_flags_changed;
widget_class->get_preferred_width = gtk_text_view_get_preferred_width;
widget_class->get_preferred_height = gtk_text_view_get_preferred_height;
widget_class->size_allocate = gtk_text_view_size_allocate;
widget_class->event = gtk_text_view_event;
widget_class->key_press_event = gtk_text_view_key_press_event;
widget_class->key_release_event = gtk_text_view_key_release_event;
widget_class->button_press_event = gtk_text_view_button_press_event;
widget_class->button_release_event = gtk_text_view_button_release_event;
widget_class->focus_in_event = gtk_text_view_focus_in_event;
widget_class->focus_out_event = gtk_text_view_focus_out_event;
widget_class->motion_notify_event = gtk_text_view_motion_event;
widget_class->draw = gtk_text_view_draw;
widget_class->focus = gtk_text_view_focus;
widget_class->drag_begin = gtk_text_view_drag_begin;
widget_class->drag_end = gtk_text_view_drag_end;
widget_class->drag_data_get = gtk_text_view_drag_data_get;
widget_class->drag_data_delete = gtk_text_view_drag_data_delete;
widget_class->drag_leave = gtk_text_view_drag_leave;
widget_class->drag_motion = gtk_text_view_drag_motion;
widget_class->drag_drop = gtk_text_view_drag_drop;
widget_class->drag_data_received = gtk_text_view_drag_data_received;
widget_class->popup_menu = gtk_text_view_popup_menu;
container_class->add = gtk_text_view_add;
container_class->remove = gtk_text_view_remove;
container_class->forall = gtk_text_view_forall;
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;
/*
* Properties
*/
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_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_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_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_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_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_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_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_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_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));
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_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));
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_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));
/**
* GtkTextView:im-module:
*
* Which IM (input method) module should be used for this entry.
* See #GtkIMContext.
*
* Setting this to a non-%NULL value overrides the
* system-wide IM module setting. See the GtkSettings
* #GtkSettings:gtk-im-module property.
*
* Since: 2.16
*/
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));
/* 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");
/*
* Style properties
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boxed ("error-underline-color",
P_("Error underline color"),
P_("Color with which to draw error-indication underlines"),
GDK_TYPE_COLOR,
GTK_PARAM_READABLE));
/*
* 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
*
* The ::move-cursor signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted when the user initiates a cursor movement.
* 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 Shift modifier extends the selection,
* the variant without the Shift modifer does not.
* There are too many key combinations to list them all here.
* <itemizedlist>
* <listitem>Arrow keys move by individual characters/lines</listitem>
* <listitem>Ctrl-arrow key combinations move by words/paragraphs</listitem>
* <listitem>Home/End keys move to the ends of the buffer</listitem>
* <listitem>PageUp/PageDown keys move vertically by pages</listitem>
* <listitem>Ctrl-PageUp/PageDown keys move horizontally by pages</listitem>
* </itemizedlist>
*/
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);
/**
* GtkTextView::move-viewport:
* @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
*
* The ::move-viewport signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* 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);
/**
* GtkTextView::set-anchor:
* @text_view: the object which received the signal
*
* The ::set-anchor signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* 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,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkTextView::insert-at-cursor:
* @text_view: the object which received the signal
* @string: the string to insert
*
* The ::insert-at-cursor signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted when the user initiates the insertion of a
* fixed string at the cursor.
*
* 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,
_gtk_marshal_VOID__STRING,
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
*
* The ::delete-from-cursor signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted when the user initiates a text deletion.
*
* 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
* Delete for deleting a character, Ctrl-Delete for
* deleting a word and Ctrl-Backspace for deleting a word
* backwords.
*/
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);
/**
* GtkTextView::backspace:
* @text_view: the object which received the signal
*
* The ::backspace signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted when the user asks for it.
*
* The default bindings for this signal are
* Backspace and Shift-Backspace.
*/
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,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkTextView::cut-clipboard:
* @text_view: the object which received the signal
*
* The ::cut-clipboard signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to cut the selection to the clipboard.
*
* The default bindings for this signal are
* Ctrl-x and Shift-Delete.
*/
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,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkTextView::copy-clipboard:
* @text_view: the object which received the signal
*
* The ::copy-clipboard signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to copy the selection to the clipboard.
*
* The default bindings for this signal are
* Ctrl-c and Ctrl-Insert.
*/
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,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkTextView::paste-clipboard:
* @text_view: the object which received the signal
*
* The ::paste-clipboard signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to paste the contents of the clipboard
* into the text view.
*
* The default bindings for this signal are
* Ctrl-v and Shift-Insert.
*/
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,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkTextView::toggle-overwrite:
* @text_view: the object which received the signal
*
* The ::toggle-overwrite signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to toggle the overwrite mode of the text view.
*
* The default bindings for this signal is Insert.
*/
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,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkTextView::populate-popup:
* @entry: The text view on which the signal is emitted
* @menu: the menu that is being populated
*
* The ::populate-popup signal gets emitted before showing the
* context menu of the text view.
*
* If you need to add items to the context menu, connect
* to this signal and append your menuitems to the @menu.
*/
signals[POPULATE_POPUP] =
g_signal_new (I_("populate-popup"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTextViewClass, populate_popup),
NULL, NULL,
_gtk_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
GTK_TYPE_MENU);
/**
* GtkTextView::select-all:
* @text_view: the object which received the signal
* @select: %TRUE to select, %FALSE to unselect
*
* The ::select-all signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to select or unselect the complete
* contents of the text view.
*
* The default bindings for this signal are Ctrl-a and Ctrl-/
* for selecting and Shift-Ctrl-a and Ctrl-\ 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,
_gtk_marshal_VOID__BOOLEAN,
G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
/**
* GtkTextView::toggle-cursor-visible:
* @text_view: the object which received the signal
*
* The ::toggle-cursor-visible signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to toggle the visibility of the cursor.
*
* The default binding for this signal is F7.
*/
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,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkTextView::preedit-changed:
* @text_view: the object which received the signal
* @preedit: the current preedit string
*
* 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.
*
* Since: 2.20
*/
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,
_gtk_marshal_VOID__STRING,
G_TYPE_NONE, 1,
G_TYPE_STRING);
/*
* Key bindings
*/
binding_set = gtk_binding_set_by_class (klass);
/* Moving the insertion point */
add_move_binding (binding_set, GDK_KEY_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
add_move_binding (binding_set, GDK_KEY_KP_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
add_move_binding (binding_set, GDK_KEY_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
add_move_binding (binding_set, GDK_KEY_KP_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
add_move_binding (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, -1);
add_move_binding (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, -1);
add_move_binding (binding_set, GDK_KEY_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (binding_set, GDK_KEY_KP_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (binding_set, GDK_KEY_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
add_move_binding (binding_set, GDK_KEY_KP_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
add_move_binding (binding_set, GDK_KEY_Up, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, -1);
add_move_binding (binding_set, GDK_KEY_KP_Up, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, -1);
add_move_binding (binding_set, GDK_KEY_Down, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, 1);
add_move_binding (binding_set, GDK_KEY_KP_Down, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, 1);
add_move_binding (binding_set, GDK_KEY_Home, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
add_move_binding (binding_set, GDK_KEY_KP_Home, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
add_move_binding (binding_set, GDK_KEY_End, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
add_move_binding (binding_set, GDK_KEY_KP_End, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
add_move_binding (binding_set, GDK_KEY_Home, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (binding_set, GDK_KEY_KP_Home, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (binding_set, GDK_KEY_End, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (binding_set, GDK_KEY_KP_End, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (binding_set, GDK_KEY_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
add_move_binding (binding_set, GDK_KEY_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
add_move_binding (binding_set, GDK_KEY_Page_Up, GDK_CONTROL_MASK,
GTK_MOVEMENT_HORIZONTAL_PAGES, -1);
add_move_binding (binding_set, GDK_KEY_KP_Page_Up, GDK_CONTROL_MASK,
GTK_MOVEMENT_HORIZONTAL_PAGES, -1);
add_move_binding (binding_set, GDK_KEY_Page_Down, GDK_CONTROL_MASK,
GTK_MOVEMENT_HORIZONTAL_PAGES, 1);
add_move_binding (binding_set, GDK_KEY_KP_Page_Down, GDK_CONTROL_MASK,
GTK_MOVEMENT_HORIZONTAL_PAGES, 1);
/* Select all */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
"select-all", 1,
G_TYPE_BOOLEAN, TRUE);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK,
"select-all", 1,
G_TYPE_BOOLEAN, TRUE);
/* Unselect all */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK,
"select-all", 1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"select-all", 1,
G_TYPE_BOOLEAN, FALSE);
/* Deleting text */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Delete, 0,
"delete-from-cursor", 2,
G_TYPE_ENUM, GTK_DELETE_CHARS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Delete, 0,
"delete-from-cursor", 2,
G_TYPE_ENUM, GTK_DELETE_CHARS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0,
"backspace", 0);
/* Make this do the same as Backspace, to help with mis-typing */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_SHIFT_MASK,
"backspace", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Delete, GDK_CONTROL_MASK,
"delete-from-cursor", 2,
G_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Delete, GDK_CONTROL_MASK,
"delete-from-cursor", 2,
G_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK,
"delete-from-cursor", 2,
G_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
G_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Delete, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"delete-from-cursor", 2,
G_TYPE_ENUM, GTK_DELETE_PARAGRAPH_ENDS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Delete, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"delete-from-cursor", 2,
G_TYPE_ENUM, GTK_DELETE_PARAGRAPH_ENDS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"delete-from-cursor", 2,
G_TYPE_ENUM, GTK_DELETE_PARAGRAPH_ENDS,
G_TYPE_INT, -1);
/* Cut/copy/paste */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_x, GDK_CONTROL_MASK,
"cut-clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_c, GDK_CONTROL_MASK,
"copy-clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_v, GDK_CONTROL_MASK,
"paste-clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Delete, GDK_SHIFT_MASK,
"cut-clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Insert, GDK_CONTROL_MASK,
"copy-clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Insert, GDK_SHIFT_MASK,
"paste-clipboard", 0);
/* Overwrite */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Insert, 0,
"toggle-overwrite", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Insert, 0,
"toggle-overwrite", 0);
/* Caret mode */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_F7, 0,
"toggle-cursor-visible", 0);
/* Control-tab focus motion */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Tab, GDK_CONTROL_MASK,
"move-focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_FORWARD);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Tab, GDK_CONTROL_MASK,
"move-focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_FORWARD);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Tab, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"move-focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_BACKWARD);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Tab, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"move-focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_BACKWARD);
g_type_class_add_private (gobject_class, sizeof (GtkTextViewPrivate));
}
static void
gtk_text_view_init (GtkTextView *text_view)
{
GtkWidget *widget = GTK_WIDGET (text_view);
GtkTargetList *target_list;
GtkTextViewPrivate *priv;
text_view->priv = GTK_TEXT_VIEW_GET_PRIVATE (text_view);
priv = text_view->priv;
gtk_widget_set_can_focus (widget, TRUE);
/* 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->left_margin = 0;
priv->right_margin = 0;
priv->indent = 0;
priv->tabs = NULL;
priv->editable = TRUE;
priv->scroll_after_paste = TRUE;
gtk_drag_dest_set (widget, 0, NULL, 0,
GDK_ACTION_COPY | GDK_ACTION_MOVE);
target_list = gtk_target_list_new (NULL, 0);
gtk_drag_dest_set_target_list (widget, target_list);
gtk_target_list_unref (target_list);
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-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 (GTK_TEXT_WINDOW_TEXT,
widget, 200, 200);
priv->drag_start_x = -1;
priv->drag_start_y = -1;
priv->pending_place_cursor_button = 0;
/* We handle all our own redrawing */
gtk_widget_set_redraw_on_allocate (widget, FALSE);
}
/**
* gtk_text_view_new:
*
* Creates a new #GtkTextView. If you don't call gtk_text_view_set_buffer()
* before using the text view, an empty default buffer will be created
* for you. Get the buffer with gtk_text_view_get_buffer(). If you want
* to specify your own buffer, consider gtk_text_view_new_with_buffer().
*
* Return value: 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 gtk_text_view_new(). The
* text view adds its own reference count to the buffer; it does not
* take over an existing reference.
*
* Return value: 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:
* @text_view: a #GtkTextView
* @buffer: (allow-none): 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;
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;
if (priv->buffer != NULL)
{
/* Destroy all anchored children */
GSList *tmp_list;
GSList *copy;
copy = g_slist_copy (priv->children);
tmp_list = copy;
while (tmp_list != NULL)
{
GtkTextViewChild *vc = tmp_list->data;
if (vc->anchor)
{
gtk_widget_destroy (vc->widget);
/* vc may now be invalid! */
}
tmp_list = g_slist_next (tmp_list);
}
g_slist_free (copy);
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_target_list_notify,
text_view);
g_signal_handlers_disconnect_by_func (priv->buffer,
gtk_text_view_paste_done_handler,
text_view);
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
{
GtkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view),
GDK_SELECTION_PRIMARY);
gtk_text_buffer_remove_selection_clipboard (priv->buffer, clipboard);
}
if (priv->layout)
gtk_text_layout_set_buffer (priv->layout, NULL);
g_object_unref (priv->buffer);
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;
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, "notify::paste-target-list",
G_CALLBACK (gtk_text_view_target_list_notify),
text_view);
g_signal_connect (priv->buffer, "paste-done",
G_CALLBACK (gtk_text_view_paste_done_handler),
text_view);
gtk_text_view_target_list_notify (priv->buffer, NULL, text_view);
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
{
GtkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view),
GDK_SELECTION_PRIMARY);
gtk_text_buffer_add_selection_clipboard (priv->buffer, clipboard);
}
}
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*
get_buffer (GtkTextView *text_view)
{
if (text_view->priv->buffer == NULL)
{
GtkTextBuffer *b;
b = gtk_text_buffer_new (NULL);
gtk_text_view_set_buffer (text_view, b);
g_object_unref (b);
}
return text_view->priv->buffer;
}
/**
* gtk_text_view_get_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.
*
* Return value: (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: (allow-none): a #GtkTextIter
* @strong: (out) (allow-none): location to store the strong
* cursor position (may be %NULL)
* @weak: (out) (allow-none): location to store the weak
* cursor position (may be %NULL)
*
* Given an @iter within a text layout, determine the positions of the
* strong and weak cursors if the insertion point is at that
* iterator. 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
* gtk_text_view_buffer_to_window_coords() to convert these
* coordinates to coordinates for one of the windows in the text view.
*
* Since: 3.0
**/
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
* gtk_text_view_window_to_buffer_coords().
**/
void
gtk_text_view_get_iter_at_location (GtkTextView *text_view,
GtkTextIter *iter,
gint x,
gint y)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (iter != NULL);
gtk_text_view_ensure_layout (text_view);
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) (allow-none): 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
* gtk_text_view_window_to_buffer_coords().
*
* Note that this is different from gtk_text_view_get_iter_at_location(),
* which returns cursor locations, i.e. positions <emphasis>between</emphasis>
* characters.
*
* Since: 2.6
**/
void
gtk_text_view_get_iter_at_position (GtkTextView *text_view,
GtkTextIter *iter,
gint *trailing,
gint x,
gint y)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (iter != NULL);
gtk_text_view_ensure_layout (text_view);
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
* gtk_text_view_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 gtk_text_view_buffer_to_window_coords().
**/
void
gtk_text_view_get_line_yrange (GtkTextView *text_view,
const GtkTextIter *iter,
gint *y,
gint *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 gtk_text_view_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,
gint y,
gint *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);
}
/**
* 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 gtk_text_view_scroll_to_mark() which saves a point to be
* scrolled to after line validation.
*
* Return value: %TRUE if scrolling occurred
**/
gboolean
gtk_text_view_scroll_to_iter (GtkTextView *text_view,
GtkTextIter *iter,
gdouble within_margin,
gboolean use_align,
gdouble xalign,
gdouble yalign)
{
GdkRectangle rect;
GdkRectangle screen;
gint screen_bottom;
gint screen_right;
gint scroll_dest;
GtkWidget *widget;
gboolean retval = FALSE;
gint scroll_inc;
gint screen_xoffset, screen_yoffset;
gint current_x_scroll, current_y_scroll;
/* 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 (text_view->priv->layout,
iter,
&rect);
DV (g_print (" target rect %d,%d %d x %d\n", rect.x, rect.y, rect.width, rect.height));
current_x_scroll = text_view->priv->xoffset;
current_y_scroll = text_view->priv->yoffset;
screen.x = current_x_scroll;
screen.y = current_y_scroll;
screen.width = SCREEN_WIDTH (widget);
screen.height = SCREEN_HEIGHT (widget);
screen_xoffset = screen.width * within_margin;
screen_yoffset = screen.height * within_margin;
screen.x += screen_xoffset;
screen.y += screen_yoffset;
screen.width -= screen_xoffset * 2;
screen.height -= screen_yoffset * 2;
/* paranoia check */
if (screen.width < 1)
screen.width = 1;
if (screen.height < 1)
screen.height = 1;
/* The -1 here ensures that we leave enough space to draw the cursor
* when this function is used for horizontal scrolling.
*/
screen_right = screen.x + screen.width - 1;
screen_bottom = screen.y + screen.height;
/* 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.
*/
/* Vertical scroll */
scroll_inc = 0;
scroll_dest = current_y_scroll;
if (use_align)
{
scroll_dest = rect.y + (rect.height * yalign) - (screen.height * yalign);
/* if scroll_dest < screen.y, we move a negative increment (up),
* else a positive increment (down)
*/
scroll_inc = scroll_dest - screen.y + screen_yoffset;
}
else
{
/* move minimum to get onscreen */
if (rect.y < screen.y)
{
scroll_dest = rect.y;
scroll_inc = scroll_dest - screen.y - screen_yoffset;
}
else if ((rect.y + rect.height) > screen_bottom)
{
scroll_dest = rect.y + rect.height;
scroll_inc = scroll_dest - screen_bottom + screen_yoffset;
}
}
if (scroll_inc != 0)
{
gtk_adjustment_set_value (text_view->priv->vadjustment,
current_y_scroll + scroll_inc);
DV (g_print (" vert increment %d\n", scroll_inc));
}
/* Horizontal scroll */
scroll_inc = 0;
scroll_dest = current_x_scroll;
if (use_align)
{
scroll_dest = rect.x + (rect.width * xalign) - (screen.width * xalign);
/* if scroll_dest < screen.y, we move a negative increment (left),
* else a positive increment (right)
*/
scroll_inc = scroll_dest - screen.x + screen_xoffset;
}
else
{
/* move minimum to get onscreen */
if (rect.x < screen.x)
{
scroll_dest = rect.x;
scroll_inc = scroll_dest - screen.x - screen_xoffset;
}
else if ((rect.x + rect.width) > screen_right)
{
scroll_dest = rect.x + rect.width;
scroll_inc = scroll_dest - screen_right + screen_xoffset;
}
}
if (scroll_inc != 0)
{
gtk_adjustment_set_value (text_view->priv->hadjustment,
current_x_scroll + scroll_inc);
DV (g_print (" horiz increment %d\n", scroll_inc));
}
retval = (current_y_scroll != gtk_adjustment_get_value (text_view->priv->vadjustment))
|| (current_x_scroll != gtk_adjustment_get_value (text_view->priv->hadjustment));
if (retval)
{
DV(g_print (">Actually scrolled ("G_STRLOC")\n"));
}
else
{
DV(g_print (">Didn't end up scrolling ("G_STRLOC")\n"));
}
return retval;
}
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_free (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,
gdouble within_margin,
gboolean use_align,
gdouble xalign,
gdouble yalign)
{
GtkTextIter iter;
GtkTextPendingScroll *scroll;
DV(g_print(G_STRLOC"\n"));
scroll = g_new (GtkTextPendingScroll, 1);
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)
{
GtkAllocation allocation;
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"));
gtk_widget_get_allocation (widget, &allocation);
gtk_text_layout_validate_yrange (text_view->priv->layout, &iter,
-(allocation.height * 2),
allocation.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);
free_pending_scroll (scroll);
return retval;
}
static void
gtk_text_view_update_adjustments (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
gint 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;
if (priv->width != width || priv->height != height)
{
if (priv->width != width)
priv->width_changed = TRUE;
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 = gdk_threads_add_idle_full (GTK_TEXT_VIEW_PRIORITY_VALIDATE - 1,
do_update_im_spot_location,
text_view,
NULL);
}
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,
gdouble within_margin,
gboolean use_align,
gdouble xalign,
gdouble 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.
*
* Return value: %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 gtk_text_view_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:
* @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:
* @text_view: a #GtkTextView
*
* Gets the line wrapping for the view.
*
* Return value: 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:
* @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);
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);
}
g_object_notify (G_OBJECT (text_view), "editable");
}
}
/**
* gtk_text_view_get_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.
*
* Return value: 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:
* @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,
gint 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:
* @text_view: a #GtkTextView
*
* Gets the default number of pixels to put above paragraphs.
*
* Return value: default number of pixels above paragraphs
**/
gint
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:
* @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,
gint 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:
* @text_view: a #GtkTextView
*
* Gets the value set by gtk_text_view_set_pixels_below_lines().
*
* Return value: default number of blank pixels below paragraphs
**/
gint
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:
* @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,
gint 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:
* @text_view: a #GtkTextView
*
* Gets the value set by gtk_text_view_set_pixels_inside_wrap().
*
* Return value: default number of pixels of blank space between wrapped lines
**/
gint
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:
* @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:
* @text_view: a #GtkTextView
*
* Gets the default justification of paragraphs in @text_view.
* Tags in the buffer may override the default.
*
* Return value: 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:
* @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.
**/
void
gtk_text_view_set_left_margin (GtkTextView *text_view,
gint left_margin)
{
GtkTextViewPrivate *priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
priv = text_view->priv;
if (priv->left_margin != left_margin)
{
priv->left_margin = left_margin;
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:
* @text_view: a #GtkTextView
*
* Gets the default left margin size of paragraphs in the @text_view.
* Tags in the buffer may override the default.
*
* Return value: left margin in pixels
**/
gint
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:
* @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.
**/
void
gtk_text_view_set_right_margin (GtkTextView *text_view,
gint 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;
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:
* @text_view: a #GtkTextView
*
* Gets the default right margin for text in @text_view. Tags
* in the buffer may override the default.
*
* Return value: right margin in pixels
**/
gint
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_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,
gint 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:
* @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.
*
* Return value: number of pixels of indentation
**/
gint
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:
* @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:
* @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 pango_tab_array_free().
*
* Return value: copy of default tab array, or %NULL if "standard"
* tabs are used; must be freed with pango_tab_array_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:
* @text_view: a #GtkTextView
* @setting: whether to show the insertion cursor
*
* Toggles whether the insertion point is displayed. A buffer with no editable
* text probably shouldn't have a visible cursor, so you may want to turn
* the cursor off.
**/
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:
* @text_view: a #GtkTextView
*
* Find out whether the cursor is being displayed.
*
* Return value: 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_place_cursor_onscreen:
* @text_view: a #GtkTextView
*
* Moves the cursor to the currently visible region of the
* buffer, it it isn't there already.
*
* Return value: %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_destroy (GtkWidget *widget)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
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;
}
GTK_WIDGET_CLASS (gtk_text_view_parent_class)->destroy (widget);
}
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);
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);
if (priv->left_window)
text_window_free (priv->left_window);
if (priv->top_window)
text_window_free (priv->top_window);
if (priv->right_window)
text_window_free (priv->right_window);
if (priv->bottom_window)
text_window_free (priv->bottom_window);
g_object_unref (priv->im_context);
g_free (priv->im_module);
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_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:
priv->hscroll_policy = g_value_get_enum (value);
gtk_widget_queue_resize (GTK_WIDGET (text_view));
break;
case PROP_VSCROLL_POLICY:
priv->vscroll_policy = g_value_get_enum (value);
gtk_widget_queue_resize (GTK_WIDGET (text_view));
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_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;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_text_view_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GSList *tmp_list;
gint focus_edge_width;
gint focus_width;
guint border_width;
gboolean interior_focus;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
NULL);
if (interior_focus)
focus_edge_width = 0;
else
focus_edge_width = focus_width;
if (priv->layout)
{
priv->text_window->requisition.width = priv->layout->width;
priv->text_window->requisition.height = priv->layout->height;
}
else
{
priv->text_window->requisition.width = 0;
priv->text_window->requisition.height = 0;
}
requisition->width = priv->text_window->requisition.width + focus_edge_width * 2;
requisition->height = priv->text_window->requisition.height + focus_edge_width * 2;
if (priv->left_window)
requisition->width += priv->left_window->requisition.width;
if (priv->right_window)
requisition->width += priv->right_window->requisition.width;
if (priv->top_window)
requisition->height += priv->top_window->requisition.height;
if (priv->bottom_window)
requisition->height += priv->bottom_window->requisition.height;
border_width = gtk_container_get_border_width (GTK_CONTAINER (text_view));
requisition->width += border_width * 2;
requisition->height += border_width * 2;
tmp_list = priv->children;
while (tmp_list != NULL)
{
GtkTextViewChild *child = tmp_list->data;
if (child->anchor)
{
GtkRequisition child_req;
GtkRequisition old_req;
gtk_widget_get_preferred_size (child->widget, &old_req, NULL);
gtk_widget_get_preferred_size (child->widget, &child_req, NULL);
/* Invalidate layout lines if required */
if (priv->layout &&
(old_req.width != child_req.width ||
old_req.height != child_req.height))
gtk_text_child_anchor_queue_resize (child->anchor,
priv->layout);
}
else
{
GtkRequisition child_req;
gtk_widget_get_preferred_size (child->widget,
&child_req, NULL);
}
tmp_list = g_slist_next (tmp_list);
}
/* Cache the requested size of the text view so we can
* compare it in the changed_handler() */
priv->cached_size_request = *requisition;
}
static void
gtk_text_view_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GtkRequisition requisition;
gtk_text_view_size_request (widget, &requisition);
*minimum = *natural = requisition.width;
}
static void
gtk_text_view_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GtkRequisition requisition;
gtk_text_view_size_request (widget, &requisition);
*minimum = *natural = requisition.height;
}
static void
gtk_text_view_compute_child_allocation (GtkTextView *text_view,
GtkTextViewChild *vc,
GtkAllocation *allocation)
{
gint 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,
GtkTextViewChild *vc)
{
GtkAllocation allocation;
gtk_text_view_compute_child_allocation (text_view, vc, &allocation);
gtk_widget_size_allocate (vc->widget, &allocation);
#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_text_view_child_allocated (GtkTextLayout *layout,
GtkWidget *child,
gint x,
gint y,
gpointer data)
{
GtkTextViewChild *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_data (G_OBJECT (child),
"gtk-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)
{
GSList *tmp_list;
DV(g_print(G_STRLOC"\n"));
tmp_list = text_view->priv->children;
while (tmp_list != NULL)
{
GtkTextViewChild *child = tmp_list->data;
g_assert (child != NULL);
if (child->anchor)
{
/* We need to force-validate the regions containing
* children.
*/
GtkTextIter child_loc;
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 (text_view->priv->layout, &child_loc, &end);
}
gtk_text_layout_validate_yrange (text_view->priv->layout,
&child_loc,
0, 1);
}
else
{
GtkAllocation allocation;
GtkRequisition child_req;
allocation.x = child->x;
allocation.y = child->y;
gtk_widget_get_preferred_size (child->widget, &child_req, NULL);
allocation.width = child_req.width;
allocation.height = child_req.height;
gtk_widget_size_allocate (child->widget, &allocation);
}
tmp_list = g_slist_next (tmp_list);
}
}
static void
gtk_text_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkAllocation widget_allocation;
GtkTextView *text_view;
GtkTextViewPrivate *priv;
gint width, height;
GdkRectangle text_rect;
GdkRectangle left_rect;
GdkRectangle right_rect;
GdkRectangle top_rect;
GdkRectangle bottom_rect;
gint focus_edge_width;
gint focus_width;
guint border_width;
gboolean interior_focus;
gboolean size_changed;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
DV(g_print(G_STRLOC"\n"));
gtk_widget_get_allocation (widget, &widget_allocation);
size_changed =
widget_allocation.width != allocation->width ||
widget_allocation.height != allocation->height;
border_width = gtk_container_get_border_width (GTK_CONTAINER (text_view));
gtk_widget_set_allocation (widget, allocation);
if (gtk_widget_get_realized (widget))
{
gdk_window_move_resize (gtk_widget_get_window (widget),
allocation->x, allocation->y,
allocation->width, allocation->height);
}
/* distribute width/height among child windows. Ensure all
* windows get at least a 1x1 allocation.
*/
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
NULL);
if (interior_focus)
focus_edge_width = 0;
else
focus_edge_width = focus_width;
width = allocation->width - focus_edge_width * 2 - border_width * 2;
if (priv->left_window)
left_rect.width = priv->left_window->requisition.width;
else
left_rect.width = 0;
width -= left_rect.width;
if (priv->right_window)
right_rect.width = priv->right_window->requisition.width;
else
right_rect.width = 0;
width -= right_rect.width;
text_rect.width = MAX (1, width);
top_rect.width = text_rect.width;
bottom_rect.width = text_rect.width;
height = allocation->height - focus_edge_width * 2 - border_width * 2;
if (priv->top_window)
top_rect.height = priv->top_window->requisition.height;
else
top_rect.height = 0;
height -= top_rect.height;
if (priv->bottom_window)
bottom_rect.height = priv->bottom_window->requisition.height;
else
bottom_rect.height = 0;
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 = focus_edge_width + border_width;
top_rect.y = focus_edge_width + border_width;
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->left_window)
text_window_size_allocate (priv->left_window,
&left_rect);
if (priv->right_window)
text_window_size_allocate (priv->right_window,
&right_rect);
if (priv->top_window)
text_window_size_allocate (priv->top_window,
&top_rect);
if (priv->bottom_window)
text_window_size_allocate (priv->bottom_window,
&bottom_rect);
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 */
gtk_text_view_set_hadjustment_values (text_view);
gtk_text_view_set_vadjustment_values (text_view);
/* 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);
/* widget->window doesn't get auto-redrawn as the layout is computed, so has to
* be invalidated
*/
if (size_changed && gtk_widget_get_realized (widget))
gdk_window_invalidate_rect (gtk_widget_get_window (widget), NULL, FALSE);
}
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 = gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, first_validate_callback, text_view, NULL);
DV (g_print (G_STRLOC": adding first validate idle %d\n",
priv->first_validate_idle));
}
if (!priv->incremental_validate_idle)
{
priv->incremental_validate_idle = gdk_threads_add_idle_full (GTK_TEXT_VIEW_PRIORITY_VALIDATE, incremental_validate_callback, text_view, NULL);
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,
gint start_y,
gint old_height,
gint new_height,
gpointer data)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkWidget *widget;
GdkRectangle visible_rect;
GdkRectangle redraw_rect;
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_text_view_get_visible_rect (text_view, &visible_rect);
redraw_rect.x = visible_rect.x;
redraw_rect.width = visible_rect.width;
redraw_rect.y = start_y;
if (old_height == new_height)
redraw_rect.height = old_height;
else if (start_y + old_height > visible_rect.y)
redraw_rect.height = MAX (0, visible_rect.y + visible_rect.height - start_y);
else
redraw_rect.height = 0;
if (gdk_rectangle_intersect (&redraw_rect, &visible_rect, &redraw_rect))
{
/* text_window_invalidate_rect() takes buffer coordinates */
text_window_invalidate_rect (priv->text_window,
&redraw_rect);
DV(g_print(" invalidated rect: %d,%d %d x %d\n",
redraw_rect.x,
redraw_rect.y,
redraw_rect.width,
redraw_rect.height));
if (priv->left_window)
text_window_invalidate_rect (priv->left_window,
&redraw_rect);
if (priv->right_window)
text_window_invalidate_rect (priv->right_window,
&redraw_rect);
if (priv->top_window)
text_window_invalidate_rect (priv->top_window,
&redraw_rect);
if (priv->bottom_window)
text_window_invalidate_rect (priv->bottom_window,
&redraw_rect);
queue_update_im_spot_location (text_view);
}
}
if (old_height != new_height)
{
GSList *tmp_list;
int new_first_para_top;
int old_first_para_top;
GtkTextIter first;
/* 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;
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 */
tmp_list = priv->children;
while (tmp_list != NULL)
{
GtkTextViewChild *child = tmp_list->data;
if (child->anchor)
gtk_text_view_update_child_allocation (text_view, child);
tmp_list = g_slist_next (tmp_list);
}
}
{
GtkRequisition old_req = priv->cached_size_request;
GtkRequisition new_req;
/* Use this instead of gtk_widget_size_request wrapper
* to avoid the optimization which just returns widget->requisition
* if a resize hasn't been queued.
*/
gtk_text_view_size_request (widget, &new_req);
if (old_req.width != new_req.width ||
old_req.height != new_req.height)
{
gtk_widget_queue_resize_no_redraw (widget);
}
}
}
static void
gtk_text_view_realize (GtkWidget *widget)
{
GtkAllocation allocation;
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkStyleContext *context;
GtkStateFlags state;
GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
GSList *tmp_list;
GdkRGBA color;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
gtk_widget_set_realized (widget, TRUE);
gtk_widget_get_allocation (widget, &allocation);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gtk_widget_set_window (widget, window);
gdk_window_set_user_data (window, widget);
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_background_color (context, state, &color);
gdk_window_set_background_rgba (window, &color);
text_window_realize (priv->text_window, widget);
if (priv->left_window)
text_window_realize (priv->left_window, widget);
if (priv->top_window)
text_window_realize (priv->top_window, widget);
if (priv->right_window)
text_window_realize (priv->right_window, widget);
if (priv->bottom_window)
text_window_realize (priv->bottom_window, widget);
gtk_text_view_ensure_layout (text_view);
gtk_text_view_invalidate (text_view);
if (priv->buffer)
{
GtkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view),
GDK_SELECTION_PRIMARY);
gtk_text_buffer_add_selection_clipboard (priv->buffer, clipboard);
}
tmp_list = priv->children;
while (tmp_list != NULL)
{
GtkTextViewChild *vc = tmp_list->data;
text_view_child_set_parent_window (text_view, vc);
tmp_list = tmp_list->next;
}
/* 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)
{
GtkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view),
GDK_SELECTION_PRIMARY);
gtk_text_buffer_remove_selection_clipboard (priv->buffer, clipboard);
}
gtk_text_view_remove_validate_idles (text_view);
if (priv->popup_menu)
{
gtk_widget_destroy (priv->popup_menu);
priv->popup_menu = NULL;
}
text_window_unrealize (priv->text_window);
if (priv->left_window)
text_window_unrealize (priv->left_window);
if (priv->top_window)
text_window_unrealize (priv->top_window);
if (priv->right_window)
text_window_unrealize (priv->right_window);
if (priv->bottom_window)
text_window_unrealize (priv->bottom_window);
GTK_WIDGET_CLASS (gtk_text_view_parent_class)->unrealize (widget);
}
static void
gtk_text_view_set_background (GtkTextView *text_view)
{
GtkStyleContext *context;
GtkStateFlags state;
GtkWidget *widget;
GtkTextViewPrivate *priv;
GdkRGBA color;
widget = GTK_WIDGET (text_view);
priv = text_view->priv;
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
/* Set bin window background */
gtk_style_context_save (context);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
gtk_style_context_get_background_color (context, state, &color);
gdk_window_set_background_rgba (priv->text_window->bin_window, &color);
gtk_style_context_restore (context);
/* Set lateral panes background */
gtk_style_context_get_background_color (context, state, &color);
gdk_window_set_background_rgba (gtk_widget_get_window (widget), &color);
if (priv->left_window)
gdk_window_set_background_rgba (priv->left_window->bin_window, &color);
if (priv->right_window)
gdk_window_set_background_rgba (priv->right_window->bin_window, &color);
if (priv->top_window)
gdk_window_set_background_rgba (priv->top_window->bin_window, &color);
if (priv->bottom_window)
gdk_window_set_background_rgba (priv->bottom_window->bin_window, &color);
}
static void
gtk_text_view_style_updated (GtkWidget *widget)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
PangoContext *ltr_context, *rtl_context;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
GTK_WIDGET_CLASS (gtk_text_view_parent_class)->style_updated (widget);
if (gtk_widget_get_realized (widget))
{
gtk_text_view_set_background (text_view);
}
if (priv->layout && priv->layout->default_style)
{
gtk_text_view_set_attributes_from_style (text_view,
priv->layout->default_style);
ltr_context = gtk_widget_create_pango_context (widget);
pango_context_set_base_dir (ltr_context, PANGO_DIRECTION_LTR);
rtl_context = gtk_widget_create_pango_context (widget);
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);
}
}
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_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GdkCursor *cursor;
if (gtk_widget_get_realized (widget))
{
gtk_text_view_set_background (text_view);
if (gtk_widget_is_sensitive (widget))
cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget), GDK_XTERM);
else
cursor = NULL;
gdk_window_set_cursor (text_view->priv->text_window->bin_window, cursor);
if (cursor)
g_object_unref (cursor);
text_view->priv->mouse_cursor_obscured = FALSE;
}
if (!gtk_widget_is_sensitive (widget))
{
/* Clear any selection */
gtk_text_view_unselect (text_view);
}
gtk_widget_queue_draw (widget);
}
static void
set_invisible_cursor (GdkWindow *window)
{
GdkDisplay *display;
GdkCursor *cursor;
display = gdk_window_get_display (window);
cursor = gdk_cursor_new_for_display (display, GDK_BLANK_CURSOR);
gdk_window_set_cursor (window, cursor);
g_object_unref (cursor);
}
static void
gtk_text_view_obscure_mouse_cursor (GtkTextView *text_view)
{
if (text_view->priv->mouse_cursor_obscured)
return;
set_invisible_cursor (text_view->priv->text_window->bin_window);
text_view->priv->mouse_cursor_obscured = TRUE;
}
static void
gtk_text_view_unobscure_mouse_cursor (GtkTextView *text_view)
{
if (text_view->priv->mouse_cursor_obscured)
{
GdkCursor *cursor;
cursor = gdk_cursor_new_for_display (gtk_widget_get_display (GTK_WIDGET (text_view)),
GDK_XTERM);
gdk_window_set_cursor (text_view->priv->text_window->bin_window, cursor);
g_object_unref (cursor);
text_view->priv->mouse_cursor_obscured = FALSE;
}
}
static void
gtk_text_view_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
GtkTextViewPrivate *priv;
priv = GTK_TEXT_VIEW (widget)->priv;
if (priv->grab_device &&
gtk_widget_device_is_shadowed (widget, priv->grab_device))
{
gtk_text_view_end_selection_drag (GTK_TEXT_VIEW (widget));
gtk_text_view_unobscure_mouse_cursor (GTK_TEXT_VIEW (widget));
}
}
/*
* Events
*/
static gboolean
get_event_coordinates (GdkEvent *event, gint *x, gint *y)
{
if (event)
switch (event->type)
{
case GDK_MOTION_NOTIFY:
*x = event->motion.x;
*y = event->motion.y;
return TRUE;
break;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
*x = event->button.x;
*y = event->button.y;
return TRUE;
break;
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
case GDK_PROPERTY_NOTIFY:
case GDK_SELECTION_CLEAR:
case GDK_SELECTION_REQUEST:
case GDK_SELECTION_NOTIFY:
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
case GDK_DRAG_ENTER:
case GDK_DRAG_LEAVE:
case GDK_DRAG_MOTION:
case GDK_DRAG_STATUS:
case GDK_DROP_START:
case GDK_DROP_FINISHED:
default:
return FALSE;
break;
}
return FALSE;
}
static gint
emit_event_on_tags (GtkWidget *widget,
GdkEvent *event,
GtkTextIter *iter)
{
GSList *tags;
GSList *tmp;
gboolean retval = FALSE;
tags = gtk_text_iter_get_tags (iter);
tmp = tags;
while (tmp != NULL)
{
GtkTextTag *tag = tmp->data;
if (gtk_text_tag_event (tag, G_OBJECT (widget), event, iter))
{
retval = TRUE;
break;
}
tmp = g_slist_next (tmp);
}
g_slist_free (tags);
return retval;
}
static gint
gtk_text_view_event (GtkWidget *widget, GdkEvent *event)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
gint x = 0, y = 0;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
if (priv->layout == NULL ||
get_buffer (text_view) == NULL)
return FALSE;
if (event->any.window != priv->text_window->bin_window)
return FALSE;
if (get_event_coordinates (event, &x, &y))
{
GtkTextIter iter;
x += priv->xoffset;
y += priv->yoffset;
/* FIXME this is slow and we do it twice per event.
* My favorite solution is to have GtkTextLayout cache
* the last couple lookups.
*/
gtk_text_layout_get_iter_at_pixel (priv->layout,
&iter,
x, y);
return emit_event_on_tags (widget, event, &iter);
}
else if (event->type == GDK_KEY_PRESS ||
event->type == GDK_KEY_RELEASE)
{
GtkTextIter iter;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter,
gtk_text_buffer_get_insert (get_buffer (text_view)));
return emit_event_on_tags (widget, event, &iter);
}
else
return FALSE;
}
static gint
gtk_text_view_key_press_event (GtkWidget *widget, GdkEventKey *event)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkTextMark *insert;
GtkTextIter iter;
gboolean can_insert;
gboolean retval = FALSE;
gboolean obscure = FALSE;
text_view = GTK_TEXT_VIEW (widget);
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);
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);
if (gtk_im_context_filter_keypress (priv->im_context, event))
{
priv->need_im_reset = TRUE;
if (!can_insert)
gtk_text_view_reset_im_context (text_view);
obscure = can_insert;
retval = TRUE;
}
/* Binding set */
else if (GTK_WIDGET_CLASS (gtk_text_view_parent_class)->key_press_event (widget, event))
{
retval = TRUE;
}
/* use overall editability not can_insert, more predictable for users */
else if (priv->editable &&
(event->keyval == GDK_KEY_Return ||
event->keyval == GDK_KEY_ISO_Enter ||
event->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");
obscure = TRUE;
retval = TRUE;
}
/* Pass through Tab as literal tab, unless Control is held down */
else if ((event->keyval == GDK_KEY_Tab ||
event->keyval == GDK_KEY_KP_Tab ||
event->keyval == GDK_KEY_ISO_Left_Tab) &&
!(event->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");
obscure = TRUE;
}
else
g_signal_emit_by_name (text_view, "move-focus",
(event->state & GDK_SHIFT_MASK) ?
GTK_DIR_TAB_BACKWARD : GTK_DIR_TAB_FORWARD);
retval = TRUE;
}
else
retval = FALSE;
if (obscure)
gtk_text_view_obscure_mouse_cursor (text_view);
gtk_text_view_reset_blink_time (text_view);
gtk_text_view_pend_cursor_blink (text_view);
return retval;
}
static gint
gtk_text_view_key_release_event (GtkWidget *widget, GdkEventKey *event)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkTextMark *insert;
GtkTextIter iter;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
if (priv->layout == NULL || get_buffer (text_view) == NULL)
return FALSE;
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_can_insert (&iter, priv->editable) &&
gtk_im_context_filter_keypress (priv->im_context, event))
{
priv->need_im_reset = TRUE;
return TRUE;
}
else
return GTK_WIDGET_CLASS (gtk_text_view_parent_class)->key_release_event (widget, event);
}
static gint
gtk_text_view_button_press_event (GtkWidget *widget, GdkEventButton *event)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
gtk_widget_grab_focus (widget);
if (event->window != priv->text_window->bin_window)
{
/* Remove selection if any. */
gtk_text_view_unselect (text_view);
return FALSE;
}
gtk_text_view_reset_blink_time (text_view);
#if 0
/* debug hack */
if (event->button == 3 && (event->state & GDK_CONTROL_MASK) != 0)
_gtk_text_buffer_spew (GTK_TEXT_VIEW (widget)->buffer);
else if (event->button == 3)
gtk_text_layout_spew (GTK_TEXT_VIEW (widget)->layout);
#endif
if (event->type == GDK_BUTTON_PRESS)
{
gtk_text_view_reset_im_context (text_view);
if (event->button == 1)
{
/* If we're in the selection, start a drag copy/move of the
* selection; otherwise, start creating a new selection.
*/
GtkTextIter iter;
GtkTextIter start, end;
gtk_text_layout_get_iter_at_pixel (priv->layout,
&iter,
event->x + priv->xoffset,
event->y + priv->yoffset);
if (gtk_text_buffer_get_selection_bounds (get_buffer (text_view),
&start, &end) &&
gtk_text_iter_in_range (&iter, &start, &end) &&
!(event->state & GDK_SHIFT_MASK))
{
priv->drag_start_x = event->x;
priv->drag_start_y = event->y;
priv->pending_place_cursor_button = event->button;
}
else
{
gtk_text_view_start_selection_drag (text_view, &iter, event);
}
return TRUE;
}
else if (event->button == 2)
{
GtkTextIter iter;
/* We do not want to scroll back to the insert iter when we paste
with the middle button */
priv->scroll_after_paste = FALSE;
gtk_text_layout_get_iter_at_pixel (priv->layout,
&iter,
event->x + priv->xoffset,
event->y + priv->yoffset);
gtk_text_buffer_paste_clipboard (get_buffer (text_view),
gtk_widget_get_clipboard (widget, GDK_SELECTION_PRIMARY),
&iter,
priv->editable);
return TRUE;
}
else if (event->button == 3)
{
gtk_text_view_do_popup (text_view, event);
return TRUE;
}
}
else if ((event->type == GDK_2BUTTON_PRESS ||
event->type == GDK_3BUTTON_PRESS) &&
event->button == 1)
{
GtkTextIter iter;
gtk_text_view_end_selection_drag (text_view);
gtk_text_layout_get_iter_at_pixel (priv->layout,
&iter,
event->x + priv->xoffset,
event->y + priv->yoffset);
gtk_text_view_start_selection_drag (text_view, &iter, event);
return TRUE;
}
return FALSE;
}
static gint
gtk_text_view_button_release_event (GtkWidget *widget, GdkEventButton *event)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
if (event->window != priv->text_window->bin_window)
return FALSE;
if (event->button == 1)
{
if (priv->drag_start_x >= 0)
{
priv->drag_start_x = -1;
priv->drag_start_y = -1;
}
if (gtk_text_view_end_selection_drag (GTK_TEXT_VIEW (widget)))
return TRUE;
else if (priv->pending_place_cursor_button == event->button)
{
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,
event->x + priv->xoffset,
event->y + priv->yoffset);
gtk_text_buffer_place_cursor (get_buffer (text_view), &iter);
gtk_text_view_check_cursor_blink (text_view);
priv->pending_place_cursor_button = 0;
return FALSE;
}
}
return FALSE;
}
static void
keymap_direction_changed (GdkKeymap *keymap,
GtkTextView *text_view)
{
gtk_text_view_check_keymap_direction (text_view);
}
static gint
gtk_text_view_focus_in_event (GtkWidget *widget, GdkEventFocus *event)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
gtk_widget_queue_draw (widget);
DV(g_print (G_STRLOC": focus_in_event\n"));
gtk_text_view_reset_blink_time (text_view);
if (priv->cursor_visible && priv->layout)
{
gtk_text_layout_set_cursor_visible (priv->layout, TRUE);
gtk_text_view_check_cursor_blink (text_view);
}
g_signal_connect (gdk_keymap_get_for_display (gtk_widget_get_display (widget)),
"direction-changed",
G_CALLBACK (keymap_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);
}
return FALSE;
}
static gint
gtk_text_view_focus_out_event (GtkWidget *widget, GdkEventFocus *event)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
gtk_text_view_end_selection_drag (text_view);
gtk_widget_queue_draw (widget);
DV(g_print (G_STRLOC": focus_out_event\n"));
if (priv->cursor_visible && priv->layout)
{
gtk_text_view_check_cursor_blink (text_view);
gtk_text_layout_set_cursor_visible (priv->layout, FALSE);
}
g_signal_handlers_disconnect_by_func (gdk_keymap_get_for_display (gtk_widget_get_display (widget)),
keymap_direction_changed,
text_view);
if (priv->editable)
{
priv->need_im_reset = TRUE;
gtk_im_context_focus_out (priv->im_context);
}
return FALSE;
}
static gint
gtk_text_view_motion_event (GtkWidget *widget, GdkEventMotion *event)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
gtk_text_view_unobscure_mouse_cursor (text_view);
if (event->window == priv->text_window->bin_window &&
priv->drag_start_x >= 0)
{
gint x = event->x;
gint y = event->y;
gdk_event_request_motions (event);
if (gtk_drag_check_threshold (widget,
priv->drag_start_x,
priv->drag_start_y,
x, y))
{
GtkTextIter iter;
gint buffer_x, buffer_y;
gtk_text_view_window_to_buffer_coords (text_view,
GTK_TEXT_WINDOW_TEXT,
priv->drag_start_x,
priv->drag_start_y,
&buffer_x,
&buffer_y);
gtk_text_layout_get_iter_at_pixel (priv->layout,
&iter,
buffer_x, buffer_y);
gtk_text_view_start_selection_dnd (text_view, &iter, event);
return TRUE;
}
}
return FALSE;
}
static void
gtk_text_view_paint (GtkWidget *widget,
cairo_t *cr)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GList *child_exposes;
GList *tmp_list;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
g_return_if_fail (priv->layout != NULL);
g_return_if_fail (priv->xoffset >= 0);
g_return_if_fail (priv->yoffset >= 0);
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 ();
}
#if 0
printf ("painting %d,%d %d x %d\n",
area->x, area->y,
area->width, area->height);
#endif
child_exposes = NULL;
cairo_save (cr);
cairo_translate (cr, -priv->xoffset, -priv->yoffset);
gtk_text_layout_draw (priv->layout,
widget,
cr,
&child_exposes);
cairo_restore (cr);
tmp_list = child_exposes;
while (tmp_list != NULL)
{
GtkWidget *child = tmp_list->data;
gtk_container_propagate_draw (GTK_CONTAINER (text_view),
child,
cr);
g_object_unref (child);
tmp_list = tmp_list->next;
}
g_list_free (child_exposes);
}
static gboolean
gtk_text_view_draw (GtkWidget *widget,
cairo_t *cr)
{
GSList *tmp_list;
GdkWindow *window;
if (gtk_cairo_should_draw_window (cr, gtk_widget_get_window (widget)))
gtk_text_view_draw_focus (widget, cr);
window = gtk_text_view_get_window (GTK_TEXT_VIEW (widget),
GTK_TEXT_WINDOW_TEXT);
if (gtk_cairo_should_draw_window (cr, window))
{
DV(g_print (">Exposed ("G_STRLOC")\n"));
cairo_save (cr);
gtk_cairo_transform_to_window (cr, widget, window);
gtk_text_view_paint (widget, cr);
cairo_restore (cr);
}
/* Propagate exposes to all unanchored children.
* Anchored children are handled in gtk_text_view_paint().
*/
tmp_list = GTK_TEXT_VIEW (widget)->priv->children;
while (tmp_list != NULL)
{
GtkTextViewChild *vc = tmp_list->data;
/* propagate_draw checks that event->window matches
* child->window
*/
if (!vc->anchor)
gtk_container_propagate_draw (GTK_CONTAINER (widget),
vc->widget,
cr);
tmp_list = tmp_list->next;
}
return FALSE;
}
static void
gtk_text_view_draw_focus (GtkWidget *widget,
cairo_t *cr)
{
gboolean interior_focus;
/* We clear the focus if we are in interior focus mode. */
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
NULL);
if (gtk_widget_has_focus (widget) && !interior_focus)
{
GtkStyleContext *context;
context = gtk_widget_get_style_context (widget);
gtk_render_focus (context, cr, 0, 0,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
}
}
static gboolean
gtk_text_view_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkContainer *container;
gboolean result;
container = GTK_CONTAINER (widget);
if (!gtk_widget_is_focus (widget) &&
gtk_container_get_focus_child (container) == NULL)
{
gtk_widget_grab_focus (widget);
return TRUE;
}
else
{
/*
* Unset CAN_FOCUS flag so that gtk_container_focus() allows
* children to get the focus
*/
gtk_widget_set_can_focus (widget, FALSE);
result = GTK_WIDGET_CLASS (gtk_text_view_parent_class)->focus (widget, direction);
gtk_widget_set_can_focus (widget, TRUE);
return result;
}
}
/*
* Container
*/
static void
gtk_text_view_add (GtkContainer *container,
GtkWidget *child)
{
/* This is pretty random. */
gtk_text_view_add_child_in_window (GTK_TEXT_VIEW (container),
child,
GTK_TEXT_WINDOW_WIDGET,
0, 0);
}
static void
gtk_text_view_remove (GtkContainer *container,
GtkWidget *child)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkTextViewChild *vc;
GSList *iter;
text_view = GTK_TEXT_VIEW (container);
priv = text_view->priv;
vc = NULL;
iter = priv->children;
while (iter != NULL)
{
vc = iter->data;
if (vc->widget == child)
break;
iter = g_slist_next (iter);
}
g_assert (iter != NULL); /* be sure we had the child in the list */
priv->children = g_slist_remove (priv->children, vc);
gtk_widget_unparent (vc->widget);
text_view_child_free (vc);
}
static void
gtk_text_view_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GSList *iter;
GtkTextView *text_view;
GSList *copy;
g_return_if_fail (GTK_IS_TEXT_VIEW (container));
g_return_if_fail (callback != NULL);
text_view = GTK_TEXT_VIEW (container);
copy = g_slist_copy (text_view->priv->children);
iter = copy;
while (iter != NULL)
{
GtkTextViewChild *vc = iter->data;
(* callback) (vc->widget, callback_data);
iter = g_slist_next (iter);
}
g_slist_free (copy);
}
#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
if (gtk_get_debug_flags () & GTK_DEBUG_UPDATES)
return FALSE;
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 gint
get_cursor_time (GtkTextView *text_view)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
gint time;
g_object_get (settings, "gtk-cursor-blink-time", &time, NULL);
return time;
}
static gint
get_cursor_blink_timeout (GtkTextView *text_view)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
gint time;
g_object_get (settings, "gtk-cursor-blink-timeout", &time, NULL);
return time;
}
/*
* Blink!
*/
static gint
blink_cb (gpointer data)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
gboolean visible;
gint blink_timeout;
text_view = GTK_TEXT_VIEW (data);
priv = text_view->priv;
if (!gtk_widget_has_focus (GTK_WIDGET (text_view)))
{
g_warning ("GtkTextView - did not receive focus-out-event. If you\n"
"connect a handler to this signal, it must return\n"
"FALSE so the text view gets the event as well");
gtk_text_view_check_cursor_blink (text_view);
return FALSE;
}
g_assert (priv->layout);
g_assert (priv->cursor_visible);
visible = gtk_text_layout_get_cursor_visible (priv->layout);
blink_timeout = get_cursor_blink_timeout (text_view);
if (priv->blink_time > 1000 * blink_timeout &&
blink_timeout < G_MAXINT/1000)
{
/* we've blinked enough without the user doing anything, stop blinking */
visible = 0;
priv->blink_timeout = 0;
}
else if (visible)
priv->blink_timeout = gdk_threads_add_timeout (get_cursor_time (text_view) * CURSOR_OFF_MULTIPLIER / CURSOR_DIVIDER,
blink_cb,
text_view);
else
{
priv->blink_timeout = gdk_threads_add_timeout (get_cursor_time (text_view) * CURSOR_ON_MULTIPLIER / CURSOR_DIVIDER,
blink_cb,
text_view);
priv->blink_time += get_cursor_time (text_view);
}
/* Block changed_handler while changing the layout's cursor visibility
* because it would expose the whole paragraph. Instead, we expose
* the cursor's area(s) manually below.
*/
g_signal_handlers_block_by_func (priv->layout,
changed_handler,
text_view);
gtk_text_layout_set_cursor_visible (priv->layout, !visible);
g_signal_handlers_unblock_by_func (priv->layout,
changed_handler,
text_view);
text_window_invalidate_cursors (priv->text_window);
/* Remove ourselves */
return FALSE;
}
static void
gtk_text_view_stop_cursor_blink (GtkTextView *text_view)
{
if (text_view->priv->blink_timeout)
{
g_source_remove (text_view->priv->blink_timeout);
text_view->priv->blink_timeout = 0;
}
}
static void
gtk_text_view_check_cursor_blink (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (priv->layout != NULL &&
priv->cursor_visible &&
gtk_widget_has_focus (GTK_WIDGET (text_view)))
{
if (cursor_blinks (text_view))
{
if (priv->blink_timeout == 0)
{
gtk_text_layout_set_cursor_visible (priv->layout, TRUE);
priv->blink_timeout = gdk_threads_add_timeout (get_cursor_time (text_view) * CURSOR_OFF_MULTIPLIER / CURSOR_DIVIDER,
blink_cb,
text_view);
}
}
else
{
gtk_text_view_stop_cursor_blink (text_view);
gtk_text_layout_set_cursor_visible (priv->layout, TRUE);
}
}
else
{
gtk_text_view_stop_cursor_blink (text_view);
gtk_text_layout_set_cursor_visible (priv->layout, FALSE);
}
}
static void
gtk_text_view_pend_cursor_blink (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (priv->layout != NULL &&
priv->cursor_visible &&
gtk_widget_has_focus (GTK_WIDGET (text_view)) &&
cursor_blinks (text_view))
{
gtk_text_view_stop_cursor_blink (text_view);
gtk_text_layout_set_cursor_visible (priv->layout, TRUE);
priv->blink_timeout = gdk_threads_add_timeout (get_cursor_time (text_view) * CURSOR_PEND_MULTIPLIER / CURSOR_DIVIDER,
blink_cb,
text_view);
}
}
static void
gtk_text_view_reset_blink_time (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
priv->blink_time = 0;
}
/*
* Key binding handlers
*/
static gboolean
gtk_text_view_move_iter_by_lines (GtkTextView *text_view,
GtkTextIter *newplace,
gint 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 void
gtk_text_view_move_cursor_internal (GtkTextView *text_view,
GtkMovementStep step,
gint count,
gboolean extend_selection)
{
GtkTextViewPrivate *priv;
GtkTextIter insert;
GtkTextIter newplace;
gboolean cancel_selection = FALSE;
gint cursor_x_pos = 0;
GtkDirectionType leave_direction = -1;
priv = text_view->priv;
if (!priv->cursor_visible)
{
GtkScrollStep scroll_step;
gdouble old_xpos, old_ypos;
switch (step)
{
case GTK_MOVEMENT_VISUAL_POSITIONS:
leave_direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
/* fall through */
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;
/* fall through */
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 = priv->xoffset;
old_ypos = priv->yoffset;
gtk_text_view_move_viewport (text_view, scroll_step, count);
if ((old_xpos != priv->xoffset || old_ypos != priv->yoffset) &&
leave_direction != -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)
{
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 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 (count > 0)
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 (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;
default:
break;
}
/* call move_cursor() even if the cursor hasn't moved, since it
cancels the selection
*/
move_cursor (text_view, &newplace, extend_selection);
if (!gtk_text_iter_equal (&insert, &newplace))
{
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);
}
else if (leave_direction != -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_cursor (GtkTextView *text_view,
GtkMovementStep step,
gint count,
gboolean extend_selection)
{
gtk_text_view_move_cursor_internal (text_view, step, count, extend_selection);
}
static void
gtk_text_view_move_viewport (GtkTextView *text_view,
GtkScrollStep step,
gint count)
{
GtkAdjustment *adjustment;
gdouble 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_set_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,
gint count,
gboolean extend_selection)
{
GtkTextViewPrivate *priv;
GtkAdjustment *adjustment;
gint cursor_x_pos, cursor_y_pos;
GtkTextMark *insert_mark;
GtkTextIter old_insert;
GtkTextIter new_insert;
GtkTextIter anchor;
gdouble newval;
gdouble oldval;
gint 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 = gtk_adjustment_get_value (adjustment);
newval = gtk_adjustment_get_value (adjustment);
newval += count * gtk_adjustment_get_page_increment (adjustment);
gtk_adjustment_set_value (adjustment, newval);
cursor_y_pos += gtk_adjustment_get_value (adjustment) - oldval;
gtk_text_layout_get_iter_at_pixel (priv->layout, &new_insert, cursor_x_pos, cursor_y_pos);
clamp_iter_onscreen (text_view, &new_insert);
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"));
gtk_text_view_scroll_mark_onscreen (text_view, insert_mark);
return !gtk_text_iter_equal (&old_insert, &new_insert);
}
static gboolean
gtk_text_view_scroll_hpages (GtkTextView *text_view,
gint count,
gboolean extend_selection)
{
GtkTextViewPrivate *priv;
GtkAdjustment *adjustment;
gint cursor_x_pos, cursor_y_pos;
GtkTextMark *insert_mark;
GtkTextIter old_insert;
GtkTextIter new_insert;
gdouble newval;
gdouble oldval;
gint 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 = gtk_adjustment_get_value (adjustment);
newval = gtk_adjustment_get_value (adjustment);
newval += count * gtk_adjustment_get_page_increment (adjustment);
gtk_adjustment_set_value (adjustment, newval);
cursor_x_pos += gtk_adjustment_get_value (adjustment) - oldval;
gtk_text_layout_get_iter_at_pixel (priv->layout, &new_insert, cursor_x_pos, cursor_y_pos);
clamp_iter_onscreen (text_view, &new_insert);
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"));
gtk_text_view_scroll_mark_onscreen (text_view, insert_mark);
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 gchar *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,
gint 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)
{
GtkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view),
GDK_SELECTION_CLIPBOARD);
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)));
}
static void
gtk_text_view_copy_clipboard (GtkTextView *text_view)
{
GtkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view),
GDK_SELECTION_CLIPBOARD);
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)
{
GtkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (text_view),
GDK_SELECTION_CLIPBOARD);
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,
GtkClipboard *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 = TRUE;
}
static void
gtk_text_view_toggle_overwrite (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (priv->text_window)
text_window_invalidate_cursors (priv->text_window);
priv->overwrite_mode = !priv->overwrite_mode;
if (priv->layout)
gtk_text_layout_set_overwrite_mode (priv->layout,
priv->overwrite_mode && priv->editable);
if (priv->text_window)
text_window_invalidate_cursors (priv->text_window);
gtk_text_view_pend_cursor_blink (text_view);
g_object_notify (G_OBJECT (text_view), "overwrite");
}
/**
* gtk_text_view_get_overwrite:
* @text_view: a #GtkTextView
*
* Returns whether the #GtkTextView is in overwrite mode or not.
*
* Return value: whether @text_view is in overwrite mode or not.
*
* Since: 2.4
**/
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:
* @text_view: a #GtkTextView
* @overwrite: %TRUE to turn on overwrite mode, %FALSE to turn it off
*
* Changes the #GtkTextView overwrite mode.
*
* Since: 2.4
**/
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:
* @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 Tab 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.
*
* Since: 2.4
**/
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:
* @text_view: A #GtkTextView
*
* Returns whether pressing the Tab key inserts a tab characters.
* gtk_text_view_set_accepts_tab().
*
* Return value: %TRUE if pressing the Tab key inserts a tab character,
* %FALSE if pressing the Tab key moves the keyboard focus.
*
* Since: 2.4
**/
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
get_iter_at_pointer (GtkTextView *text_view,
GdkDevice *device,
GtkTextIter *iter,
gint *x,
gint *y)
{
GtkTextViewPrivate *priv;
gint xcoord, ycoord;
GdkModifierType state;
priv = text_view->priv;
gdk_window_get_device_position (priv->text_window->bin_window,
device, &xcoord, &ycoord, &state);
gtk_text_layout_get_iter_at_pixel (priv->layout,
iter,
xcoord + priv->xoffset,
ycoord + priv->yoffset);
if (x)
*x = xcoord;
if (y)
*y = ycoord;
}
static void
move_mark_to_pointer_and_scroll (GtkTextView *text_view,
const gchar *mark_name,
GdkDevice *device)
{
GtkTextIter newplace;
GtkTextMark *mark;
get_iter_at_pointer (text_view, device, &newplace, NULL, NULL);
mark = gtk_text_buffer_get_mark (get_buffer (text_view), mark_name);
/* This may invalidate the layout */
DV(g_print (G_STRLOC": move mark\n"));
gtk_text_buffer_move_mark (get_buffer (text_view),
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. */
}
#define UPPER_OFFSET_ANCHOR 0.8
#define LOWER_OFFSET_ANCHOR 0.2
static gboolean
check_scroll (gdouble 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 gint
drag_scan_timeout (gpointer data)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkTextIter newplace;
gint x, y;
gdouble pointer_xoffset, pointer_yoffset;
text_view = GTK_TEXT_VIEW (data);
priv = text_view->priv;
get_iter_at_pointer (text_view, priv->dnd_device, &newplace, &x, &y);
gtk_text_buffer_move_mark (get_buffer (text_view),
priv->dnd_mark,
&newplace);
pointer_xoffset = (gdouble) x / gdk_window_get_width (priv->text_window->bin_window);
pointer_yoffset = (gdouble) y / gdk_window_get_height (priv->text_window->bin_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 TRUE;
}
typedef enum
{
SELECT_CHARACTERS,
SELECT_WORDS,
SELECT_LINES
} SelectionGranularity;
/*
* Move @start and @end to the boundaries of the selection unit (indicated by
* @granularity) which contained @start initially.
* If the selction unit is SELECT_WORDS and @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.
*/
static void
extend_selection (GtkTextView *text_view,
SelectionGranularity granularity,
GtkTextIter *start,
GtkTextIter *end)
{
*end = *start;
if (granularity == SELECT_WORDS)
{
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;
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;
else
gtk_text_iter_forward_to_line_end (end);
}
}
else if (granularity == SELECT_LINES)
{
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);
}
}
}
typedef struct
{
SelectionGranularity granularity;
GtkTextMark *orig_start;
GtkTextMark *orig_end;
} SelectionData;
static void
selection_data_free (SelectionData *data)
{
if (data->orig_start != NULL)
gtk_text_buffer_delete_mark (gtk_text_mark_get_buffer (data->orig_start),
data->orig_start);
if (data->orig_end != NULL)
gtk_text_buffer_delete_mark (gtk_text_mark_get_buffer (data->orig_end),
data->orig_end);
g_free (data);
}
static gint
selection_motion_event_handler (GtkTextView *text_view,
GdkEventMotion *event,
SelectionData *data)
{
GtkTextViewPrivate *priv;
priv = text_view->priv;
gdk_event_request_motions (event);
if (priv->grab_device != event->device)
return FALSE;
if (data->granularity == SELECT_CHARACTERS)
{
move_mark_to_pointer_and_scroll (text_view, "insert", event->device);
}
else
{
GtkTextIter cursor, 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_at_pointer (text_view, event->device, &cursor, NULL, NULL);
start = cursor;
extend_selection (text_view, data->granularity, &start, &end);
/* either the selection extends to the front, or end (or not) */
if (gtk_text_iter_compare (&cursor, &orig_start) < 0)
gtk_text_buffer_select_range (buffer, &start, &orig_end);
else
gtk_text_buffer_select_range (buffer, &end, &orig_start);
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 =
gdk_threads_add_timeout (50, selection_scan_timeout, text_view);
return TRUE;
}
static void
gtk_text_view_start_selection_drag (GtkTextView *text_view,
const GtkTextIter *iter,
GdkEventButton *button)
{
GtkTextViewPrivate *priv;
GtkTextIter cursor, ins, bound;
GtkTextIter orig_start, orig_end;
GtkTextBuffer *buffer;
SelectionData *data;
if (text_view->priv->selection_drag_handler != 0)
return;
priv = text_view->priv;
data = g_new0 (SelectionData, 1);
if (button->type == GDK_2BUTTON_PRESS)
data->granularity = SELECT_WORDS;
else if (button->type == GDK_3BUTTON_PRESS)
data->granularity = SELECT_LINES;
else
data->granularity = SELECT_CHARACTERS;
priv->grab_device = button->device;
gtk_device_grab_add (GTK_WIDGET (text_view),
priv->grab_device,
TRUE);
buffer = get_buffer (text_view);
cursor = *iter;
ins = cursor;
extend_selection (text_view, data->granularity, &ins, &bound);
orig_start = ins;
orig_end = bound;
if (button->state & GDK_SHIFT_MASK)
{
/* 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 tripple 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;
orig_start = old_end;
orig_end = old_end;
}
else
{
ins = bound;
bound = old_start;
orig_end = bound;
orig_start = 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);
gtk_text_view_check_cursor_blink (text_view);
text_view->priv->selection_drag_handler = g_signal_connect_data (text_view,
"motion-notify-event",
G_CALLBACK (selection_motion_event_handler),
data,
(GClosureNotify) selection_data_free, 0);
}
/* returns whether we were really dragging */
static gboolean
gtk_text_view_end_selection_drag (GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
priv = text_view->priv;
if (!priv->grab_device)
return FALSE;
if (priv->selection_drag_handler == 0)
return FALSE;
g_signal_handler_disconnect (text_view, priv->selection_drag_handler);
priv->selection_drag_handler = 0;
if (priv->scroll_timeout != 0)
{
g_source_remove (priv->scroll_timeout);
priv->scroll_timeout = 0;
}
gtk_device_grab_remove (GTK_WIDGET (text_view),
priv->grab_device);
priv->grab_device = NULL;
return TRUE;
}
/*
* Layout utils
*/
static void
gtk_text_view_set_attributes_from_style (GtkTextView *text_view,
GtkTextAttributes *values)
{
GtkStyleContext *context;
GdkRGBA bg_color, fg_color;
GtkStateFlags state;
context = gtk_widget_get_style_context (GTK_WIDGET (text_view));
state = gtk_widget_get_state_flags (GTK_WIDGET (text_view));
gtk_style_context_save (context);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
gtk_style_context_get_background_color (context, state, &bg_color);
gtk_style_context_get_color (context, state, &fg_color);
values->appearance.bg_color.red = CLAMP (bg_color.red * 65535. + 0.5, 0, 65535);
values->appearance.bg_color.green = CLAMP (bg_color.green * 65535. + 0.5, 0, 65535);
values->appearance.bg_color.blue = CLAMP (bg_color.blue * 65535. + 0.5, 0, 65535);
values->appearance.fg_color.red = CLAMP (fg_color.red * 65535. + 0.5, 0, 65535);
values->appearance.fg_color.green = CLAMP (fg_color.green * 65535. + 0.5, 0, 65535);
values->appearance.fg_color.blue = CLAMP (fg_color.blue * 65535. + 0.5, 0, 65535);
if (values->font)
pango_font_description_free (values->font);
values->font = pango_font_description_copy (gtk_style_context_get_font (context, state));
gtk_style_context_restore (context);
}
static void
gtk_text_view_check_keymap_direction (GtkTextView *text_view)
{
GtkTextViewPrivate *priv = text_view->priv;
if (priv->layout)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
GdkKeymap *keymap = gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (text_view)));
GtkTextDirection new_cursor_dir;
GtkTextDirection new_keyboard_dir;
gboolean split_cursor;
g_object_get (settings,
"gtk-split-cursor", &split_cursor,
NULL);
if (gdk_keymap_get_direction (keymap) == 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;
PangoContext *ltr_context, *rtl_context;
GSList *tmp_list;
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_text_view_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) && priv->cursor_visible))
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));
pango_context_set_base_dir (ltr_context, PANGO_DIRECTION_LTR);
rtl_context = gtk_widget_create_pango_context (GTK_WIDGET (text_view));
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_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;
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 */
tmp_list = priv->children;
while (tmp_list != NULL)
{
GtkTextViewChild *vc = tmp_list->data;
if (vc->anchor)
{
gtk_text_anchored_child_set_layout (vc->widget,
priv->layout);
/* vc may now be invalid! */
}
tmp_list = g_slist_next (tmp_list);
}
}
}
/**
* gtk_text_view_get_default_attributes:
* @text_view: a #GtkTextView
*
* Obtains a copy of the default text attributes. These are the
* attributes used for text unless a tag overrides them.
* You'd typically pass the default attributes in to
* gtk_text_iter_get_attributes() in order to get the
* attributes in effect at a given text position.
*
* The return value is a copy owned by the caller of this function,
* and should be freed.
*
* Return value: a new #GtkTextAttributes
**/
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)
{
GSList *tmp_list;
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);
/* Remove layout from all anchored children */
tmp_list = priv->children;
while (tmp_list != NULL)
{
GtkTextViewChild *vc = tmp_list->data;
if (vc->anchor)
{
gtk_text_anchored_child_set_layout (vc->widget, NULL);
/* vc may now be invalid! */
}
tmp_list = g_slist_next (tmp_list);
}
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.
*
* Since: 2.22
*/
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
* gtk_im_context_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.
*
* |[
* static gboolean
* gtk_foo_bar_key_press_event (GtkWidget *widget,
* GdkEventKey *event)
* {
* if ((key->keyval == GDK_KEY_Return || key->keyval == GDK_KEY_KP_Enter))
* {
* if (gtk_text_view_im_context_filter_keypress (GTK_TEXT_VIEW (view), event))
* return TRUE;
* }
*
* /&ast; Do some stuff &ast;/
*
* return GTK_WIDGET_CLASS (gtk_foo_bar_parent_class)->key_press_event (widget, event);
* }
* ]|
*
* Return value: %TRUE if the input method handled the key event.
*
* Since: 2.22
*/
gboolean
gtk_text_view_im_context_filter_keypress (GtkTextView *text_view,
GdkEventKey *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
drag_begin_cb (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextBuffer *buffer = gtk_text_view_get_buffer (text_view);
GtkTextIter start;
GtkTextIter end;
cairo_surface_t *surface = NULL;
g_signal_handlers_disconnect_by_func (widget, drag_begin_cb, NULL);
if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
surface = _gtk_text_util_create_rich_drag_icon (widget, buffer, &start, &end);
if (surface)
{
gtk_drag_set_icon_surface (context, surface);
cairo_surface_destroy (surface);
}
else
{
gtk_drag_set_icon_default (context);
}
}
static void
gtk_text_view_start_selection_dnd (GtkTextView *text_view,
const GtkTextIter *iter,
GdkEventMotion *event)
{
GtkTargetList *target_list;
text_view->priv->drag_start_x = -1;
text_view->priv->drag_start_y = -1;
text_view->priv->pending_place_cursor_button = 0;
target_list = gtk_text_buffer_get_copy_target_list (get_buffer (text_view));
g_signal_connect (text_view, "drag-begin",
G_CALLBACK (drag_begin_cb), NULL);
gtk_drag_begin (GTK_WIDGET (text_view), target_list,
GDK_ACTION_COPY | GDK_ACTION_MOVE,
1, (GdkEvent*)event);
}
static void
gtk_text_view_drag_begin (GtkWidget *widget,
GdkDragContext *context)
{
/* do nothing */
}
static void
gtk_text_view_drag_end (GtkWidget *widget,
GdkDragContext *context)
{
}
static void
gtk_text_view_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextBuffer *buffer = gtk_text_view_get_buffer (text_view);
if (info == GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS)
{
gtk_selection_data_set (selection_data,
gdk_atom_intern_static_string ("GTK_TEXT_BUFFER_CONTENTS"),
8, /* bytes */
(void*)&buffer,
sizeof (buffer));
}
else if (info == GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT)
{
GtkTextIter start;
GtkTextIter end;
guint8 *str = NULL;
gsize len;
if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
{
/* Extract the selected text */
str = gtk_text_buffer_serialize (buffer, buffer,
gtk_selection_data_get_target (selection_data),
&start, &end,
&len);
}
if (str)
{
gtk_selection_data_set (selection_data,
gtk_selection_data_get_target (selection_data),
8, /* bytes */
(guchar *) str, len);
g_free (str);
}
}
else
{
GtkTextIter start;
GtkTextIter end;
gchar *str = NULL;
if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
{
/* Extract the selected text */
str = gtk_text_iter_get_visible_text (&start, &end);
}
if (str)
{
gtk_selection_data_set_text (selection_data, str, -1);
g_free (str);
}
}
}
static void
gtk_text_view_drag_data_delete (GtkWidget *widget,
GdkDragContext *context)
{
gtk_text_buffer_delete_selection (GTK_TEXT_VIEW (widget)->priv->buffer,
TRUE, GTK_TEXT_VIEW (widget)->priv->editable);
}
static void
gtk_text_view_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
gtk_text_mark_set_visible (priv->dnd_mark, FALSE);
if (priv->dnd_device)
priv->dnd_device = NULL;
if (priv->scroll_timeout != 0)
g_source_remove (priv->scroll_timeout);
priv->scroll_timeout = 0;
}
static gboolean
gtk_text_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkTextIter newplace;
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkTextIter start;
GtkTextIter end;
GdkRectangle target_rect;
gint bx, by;
GdkAtom target;
GdkDragAction suggested_action = 0;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
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))
return FALSE; /* outside the text window, allow parent widgets to handle event */
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);
target = gtk_drag_dest_find_target (widget, context,
gtk_drag_dest_get_target_list (widget));
if (target == GDK_NONE)
{
/* can't accept any of the offered targets */
}
else 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
{
if (gtk_text_iter_can_insert (&newplace, priv->editable))
{
GtkWidget *source_widget;
suggested_action = gdk_drag_context_get_suggested_action (context);
source_widget = gtk_drag_get_source_widget (context);
if (source_widget == widget)
{
/* Default to MOVE, unless the user has
* pressed ctrl or alt to affect available actions
*/
if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
suggested_action = GDK_ACTION_MOVE;
}
}
else
{
/* Can't drop here. */
}
}
if (suggested_action != 0)
{
gtk_text_mark_set_visible (priv->dnd_mark,
priv->cursor_visible);
gdk_drag_status (context, suggested_action, time);
}
else
{
gdk_drag_status (context, 0, time);
gtk_text_mark_set_visible (priv->dnd_mark, FALSE);
}
priv->dnd_device = gdk_drag_context_get_device (context);
if (!priv->scroll_timeout)
priv->scroll_timeout =
gdk_threads_add_timeout (100, drag_scan_timeout, text_view);
/* TRUE return means don't propagate the drag motion to parent
* widgets that may also be drop sites.
*/
return TRUE;
}
static gboolean
gtk_text_view_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkTextIter drop_point;
GdkAtom target = GDK_NONE;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
if (priv->scroll_timeout != 0)
g_source_remove (priv->scroll_timeout);
priv->scroll_timeout = 0;
gtk_text_mark_set_visible (priv->dnd_mark, FALSE);
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&drop_point,
priv->dnd_mark);
if (gtk_text_iter_can_insert (&drop_point, priv->editable))
target = gtk_drag_dest_find_target (widget, context, NULL);
if (target != GDK_NONE)
gtk_drag_get_data (widget, context, target, time);
else
gtk_drag_finish (context, FALSE, FALSE, time);
return TRUE;
}
static void
insert_text_data (GtkTextView *text_view,
GtkTextIter *drop_point,
GtkSelectionData *selection_data)
{
guchar *str;
str = gtk_selection_data_get_text (selection_data);
if (str)
{
if (!gtk_text_buffer_insert_interactive (get_buffer (text_view),
drop_point, (gchar *) str, -1,
text_view->priv->editable))
{
gtk_widget_error_bell (GTK_WIDGET (text_view));
}
g_free (str);
}
}
static void
gtk_text_view_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time)
{
GtkTextIter drop_point;
GtkTextView *text_view;
GtkTextViewPrivate *priv;
gboolean success = FALSE;
GtkTextBuffer *buffer = NULL;
text_view = GTK_TEXT_VIEW (widget);
priv = text_view->priv;
if (!priv->dnd_mark)
goto done;
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))
goto done;
success = TRUE;
gtk_text_buffer_begin_user_action (buffer);
if (info == GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS)
{
GtkTextBuffer *src_buffer = NULL;
GtkTextIter start, end;
gboolean copy_tags = TRUE;
if (gtk_selection_data_get_length (selection_data) != sizeof (src_buffer))
return;
memcpy (&src_buffer, gtk_selection_data_get_data (selection_data), sizeof (src_buffer));
if (src_buffer == NULL)
return;
g_return_if_fail (GTK_IS_TEXT_BUFFER (src_buffer));
if (gtk_text_buffer_get_tag_table (src_buffer) !=
gtk_text_buffer_get_tag_table (buffer))
{
/* try to find a suitable rich text target instead */
GdkAtom *atoms;
gint n_atoms;
GList *list;
GdkAtom target = GDK_NONE;
copy_tags = FALSE;
atoms = gtk_text_buffer_get_deserialize_formats (buffer, &n_atoms);
for (list = gdk_drag_context_list_targets (context); list; list = g_list_next (list))
{
gint i;
for (i = 0; i < n_atoms; i++)
if (GUINT_TO_POINTER (atoms[i]) == list->data)
{
target = atoms[i];
break;
}
}
g_free (atoms);
if (target != GDK_NONE)
{
gtk_drag_get_data (widget, context, target, time);
gtk_text_buffer_end_user_action (buffer);
return;
}
}
if (gtk_text_buffer_get_selection_bounds (src_buffer,
&start,
&end))
{
if (copy_tags)
gtk_text_buffer_insert_range_interactive (buffer,
&drop_point,
&start,
&end,
priv->editable);
else
{
gchar *str;
str = gtk_text_iter_get_visible_text (&start, &end);
gtk_text_buffer_insert_interactive (buffer,
&drop_point, str, -1,
priv->editable);
g_free (str);
}
}
}
else if (gtk_selection_data_get_length (selection_data) > 0 &&
info == GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT)
{
gboolean retval;
GError *error = NULL;
retval = gtk_text_buffer_deserialize (buffer, buffer,
gtk_selection_data_get_target (selection_data),
&drop_point,
(guint8 *) gtk_selection_data_get_data (selection_data),
gtk_selection_data_get_length (selection_data),
&error);
if (!retval)
{
g_warning ("error pasting: %s\n", error->message);
g_clear_error (&error);
}
}
else
insert_text_data (text_view, &drop_point, selection_data);
done:
gtk_drag_finish (context, success,
success && gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE,
time);
if (success)
{
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);
}
}
/**
* gtk_text_view_get_hadjustment:
* @text_view: a #GtkTextView
*
* Gets the horizontal-scrolling #GtkAdjustment.
*
* Returns: (transfer none): pointer to the horizontal #GtkAdjustment
*
* Since: 2.22
*
* Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
**/
GtkAdjustment*
gtk_text_view_get_hadjustment (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
return text_view->priv->hadjustment;
}
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");
}
/**
* gtk_text_view_get_vadjustment:
* @text_view: a #GtkTextView
*
* Gets the vertical-scrolling #GtkAdjustment.
*
* Returns: (transfer none): pointer to the vertical #GtkAdjustment
*
* Since: 2.22
*
* Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
**/
GtkAdjustment*
gtk_text_view_get_vadjustment (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
return text_view->priv->vadjustment;
}
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;
gint screen_width;
gdouble old_value;
gdouble new_value;
gdouble 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", (gdouble)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;
gint screen_height;
gint y;
gdouble old_value;
gdouble new_value;
gdouble 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", (gdouble)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);
}
/* FIXME this adjust_allocation is a big cut-and-paste from
* GtkCList, needs to be some "official" way to do this
* factored out.
*/
typedef struct
{
GdkWindow *window;
int dx;
int dy;
} ScrollData;
/* The window to which widget->window is relative */
#define ALLOCATION_WINDOW(widget) \
(!gtk_widget_get_has_window (widget) ? \
gtk_widget_get_window (widget) : \
gdk_window_get_parent (gtk_widget_get_window (widget)))
static void
adjust_allocation_recurse (GtkWidget *widget,
gpointer data)
{
GtkAllocation allocation;
ScrollData *scroll_data = data;
/* Need to really size allocate instead of just poking
* into widget->allocation if the widget is not realized.
* FIXME someone figure out why this was.
*/
if (!gtk_widget_get_realized (widget))
{
if (gtk_widget_get_visible (widget))
{
GdkRectangle tmp_rectangle;
tmp_rectangle = allocation;
tmp_rectangle.x += scroll_data->dx;
tmp_rectangle.y += scroll_data->dy;
gtk_widget_size_allocate (widget, &tmp_rectangle);
}
}
else
{
if (ALLOCATION_WINDOW (widget) == scroll_data->window)
{
allocation.x += scroll_data->dx;
allocation.y += scroll_data->dy;
gtk_widget_set_allocation (widget, &allocation);
if (GTK_IS_CONTAINER (widget))
gtk_container_forall (GTK_CONTAINER (widget),
adjust_allocation_recurse,
data);
}
}
}
static void
adjust_allocation (GtkWidget *widget,
int dx,
int dy)
{
ScrollData scroll_data;
if (gtk_widget_get_realized (widget))
scroll_data.window = ALLOCATION_WINDOW (widget);
else
scroll_data.window = NULL;
scroll_data.dx = dx;
scroll_data.dy = dy;
adjust_allocation_recurse (widget, &scroll_data);
}
static void
gtk_text_view_value_changed (GtkAdjustment *adjustment,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
GtkTextIter iter;
gint line_top;
gint dx = 0;
gint 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 - (gint)gtk_adjustment_get_value (adjustment);
priv->xoffset = gtk_adjustment_get_value (adjustment);
/* If the change is due to a size change we need
* to invalidate the entire text window because there might be
* right-aligned or centered text
*/
if (priv->width_changed)
{
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
gdk_window_invalidate_rect (priv->text_window->bin_window, NULL, FALSE);
priv->width_changed = FALSE;
}
}
else if (adjustment == priv->vadjustment)
{
dy = priv->yoffset - (gint)gtk_adjustment_get_value (adjustment);
priv->yoffset = gtk_adjustment_get_value (adjustment);
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)
{
GSList *tmp_list;
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
{
if (dy != 0)
{
if (priv->left_window)
text_window_scroll (priv->left_window, 0, dy);
if (priv->right_window)
text_window_scroll (priv->right_window, 0, dy);
}
if (dx != 0)
{
if (priv->top_window)
text_window_scroll (priv->top_window, dx, 0);
if (priv->bottom_window)
text_window_scroll (priv->bottom_window, dx, 0);
}
/* It looks nicer to scroll the main area last, because
* it takes a while, and making the side areas update
* afterward emphasizes the slowness of scrolling the
* main area.
*/
text_window_scroll (priv->text_window, dx, dy);
}
/* Children are now "moved" in the text window, poke
* into widget->allocation for each child
*/
tmp_list = priv->children;
while (tmp_list != NULL)
{
GtkTextViewChild *child = tmp_list->data;
if (child->anchor)
adjust_allocation (child->widget, dx, dy);
tmp_list = g_slist_next (tmp_list);
}
}
/* 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);
/* process exposes */
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
{
DV (g_print ("Processing updates (%s)\n", G_STRLOC));
if (priv->left_window)
gdk_window_process_updates (priv->left_window->bin_window, TRUE);
if (priv->right_window)
gdk_window_process_updates (priv->right_window->bin_window, TRUE);
if (priv->top_window)
gdk_window_process_updates (priv->top_window->bin_window, TRUE);
if (priv->bottom_window)
gdk_window_process_updates (priv->bottom_window->bin_window, TRUE);
gdk_window_process_updates (priv->text_window->bin_window, TRUE);
}
/* 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;
}
/* 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);
DV(g_print(">End scroll offset changed handler ("G_STRLOC")\n"));
}
static void
gtk_text_view_commit_handler (GtkIMContext *context,
const gchar *str,
GtkTextView *text_view)
{
gtk_text_view_commit_text (text_view, str);
}
static void
gtk_text_view_commit_text (GtkTextView *text_view,
const gchar *str)
{
GtkTextViewPrivate *priv;
gboolean had_selection;
priv = text_view->priv;
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_changed_handler (GtkIMContext *context,
GtkTextView *text_view)
{
GtkTextViewPrivate *priv;
gchar *str;
PangoAttrList *attrs;
gint cursor_pos;
GtkTextIter iter;
priv = text_view->priv;
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 key-press-event handler.
*/
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;
gint pos;
gchar *text;
gtk_text_buffer_get_iter_at_mark (text_view->priv->buffer, &start,
gtk_text_buffer_get_insert (text_view->priv->buffer));
end = start;
pos = gtk_text_iter_get_line_index (&start);
gtk_text_iter_set_line_offset (&start, 0);
gtk_text_iter_forward_to_line_end (&end);
text = gtk_text_iter_get_slice (&start, &end);
gtk_im_context_set_surrounding (context, text, -1, pos);
g_free (text);
return TRUE;
}
static gboolean
gtk_text_view_delete_surrounding_handler (GtkIMContext *context,
gint offset,
gint 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;
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);
}
static void
gtk_text_view_target_list_notify (GtkTextBuffer *buffer,
const GParamSpec *pspec,
gpointer data)
{
GtkWidget *widget = GTK_WIDGET (data);
GtkTargetList *view_list;
GtkTargetList *buffer_list;
GList *list;
view_list = gtk_drag_dest_get_target_list (widget);
buffer_list = gtk_text_buffer_get_paste_target_list (buffer);
if (view_list)
gtk_target_list_ref (view_list);
else
view_list = gtk_target_list_new (NULL, 0);
list = view_list->list;
while (list)
{
GtkTargetPair *pair = list->data;
list = g_list_next (list); /* get next element before removing */
if (pair->info >= GTK_TEXT_BUFFER_TARGET_INFO_TEXT &&
pair->info <= GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS)
{
gtk_target_list_remove (view_list, pair->target);
}
}
for (list = buffer_list->list; list; list = g_list_next (list))
{
GtkTargetPair *pair = list->data;
gtk_target_list_add (view_list, pair->target, pair->flags, pair->info);
}
gtk_drag_dest_set_target_list (widget, view_list);
gtk_target_list_unref (view_list);
}
static void
gtk_text_view_get_virtual_cursor_pos (GtkTextView *text_view,
GtkTextIter *cursor,
gint *x,
gint *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_x != -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,
gint x,
gint 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;
}
/* Quick hack of a popup menu
*/
static void
activate_cb (GtkWidget *menuitem,
GtkTextView *text_view)
{
const gchar *signal = g_object_get_data (G_OBJECT (menuitem), "gtk-signal");
g_signal_emit_by_name (text_view, signal);
}
static void
append_action_signal (GtkTextView *text_view,
GtkWidget *menu,
const gchar *stock_id,
const gchar *signal,
gboolean sensitive)
{
GtkWidget *menuitem = gtk_image_menu_item_new_from_stock (stock_id, NULL);
g_object_set_data (G_OBJECT (menuitem), I_("gtk-signal"), (char *)signal);
g_signal_connect (menuitem, "activate",
G_CALLBACK (activate_cb), text_view);
gtk_widget_set_sensitive (menuitem, sensitive);
gtk_widget_show (menuitem);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
}
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 void
select_all_cb (GtkWidget *menuitem,
GtkTextView *text_view)
{
gtk_text_view_select_all (GTK_WIDGET (text_view), TRUE);
}
static void
delete_cb (GtkTextView *text_view)
{
gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE,
text_view->priv->editable);
}
static void
popup_menu_detach (GtkWidget *attach_widget,
GtkMenu *menu)
{
GTK_TEXT_VIEW (attach_widget)->priv->popup_menu = NULL;
}
static void
popup_position_func (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer user_data)
{
GtkAllocation allocation;
GtkTextView *text_view;
GtkWidget *widget;
GdkRectangle cursor_rect;
GdkRectangle onscreen_rect;
gint root_x, root_y;
GtkTextIter iter;
GtkRequisition req;
GdkScreen *screen;
gint monitor_num;
GdkRectangle monitor;
text_view = GTK_TEXT_VIEW (user_data);
widget = GTK_WIDGET (text_view);
g_return_if_fail (gtk_widget_get_realized (widget));
screen = gtk_widget_get_screen (widget);
gdk_window_get_origin (gtk_widget_get_window (widget),
&root_x, &root_y);
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&iter,
gtk_text_buffer_get_insert (get_buffer (text_view)));
gtk_text_view_get_iter_location (text_view,
&iter,
&cursor_rect);
gtk_text_view_get_visible_rect (text_view, &onscreen_rect);
gtk_widget_get_preferred_size (text_view->priv->popup_menu,
&req, NULL);
gtk_widget_get_allocation (widget, &allocation);
/* can't use rectangle_intersect since cursor rect can have 0 width */
if (cursor_rect.x >= onscreen_rect.x &&
cursor_rect.x < onscreen_rect.x + onscreen_rect.width &&
cursor_rect.y >= onscreen_rect.y &&
cursor_rect.y < onscreen_rect.y + onscreen_rect.height)
{
gtk_text_view_buffer_to_window_coords (text_view,
GTK_TEXT_WINDOW_WIDGET,
cursor_rect.x, cursor_rect.y,
&cursor_rect.x, &cursor_rect.y);
*x = root_x + cursor_rect.x + cursor_rect.width;
*y = root_y + cursor_rect.y + cursor_rect.height;
}
else
{
/* Just center the menu, since cursor is offscreen. */
*x = root_x + (allocation.width / 2 - req.width / 2);
*y = root_y + (allocation.height / 2 - req.height / 2);
}
/* Ensure sanity */
*x = CLAMP (*x, root_x, (root_x + allocation.width));
*y = CLAMP (*y, root_y, (root_y + allocation.height));
monitor_num = gdk_screen_get_monitor_at_point (screen, *x, *y);
gtk_menu_set_monitor (menu, monitor_num);
gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
*x = CLAMP (*x, monitor.x, monitor.x + MAX (0, monitor.width - req.width));
*y = CLAMP (*y, monitor.y, monitor.y + MAX (0, monitor.height - req.height));
*push_in = FALSE;
}
typedef struct
{
GtkTextView *text_view;
gint button;
guint time;
} PopupInfo;
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
unichar_chosen_func (const char *text,
gpointer data)
{
GtkTextView *text_view = GTK_TEXT_VIEW (data);
gtk_text_view_commit_text (text_view, text);
}
static void
popup_targets_received (GtkClipboard *clipboard,
GtkSelectionData *data,
gpointer user_data)
{
PopupInfo *info = user_data;
GtkTextView *text_view;
GtkTextViewPrivate *priv;
text_view = info->text_view;
priv = text_view->priv;
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
{
/* We implicitely rely here on the fact that if we are pasting ourself, we'll
* have text targets as well as the private GTK_TEXT_BUFFER_CONTENTS target.
*/
gboolean clipboard_contains_text;
GtkWidget *menuitem;
GtkWidget *submenu;
gboolean have_selection;
gboolean can_insert;
GtkTextIter iter;
GtkTextIter sel_start, sel_end;
gboolean show_input_method_menu;
gboolean show_unicode_menu;
clipboard_contains_text = gtk_selection_data_targets_include_text (data);
if (priv->popup_menu)
gtk_widget_destroy (priv->popup_menu);
priv->popup_menu = gtk_menu_new ();
gtk_menu_attach_to_widget (GTK_MENU (priv->popup_menu),
GTK_WIDGET (text_view),
popup_menu_detach);
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);
append_action_signal (text_view, priv->popup_menu, GTK_STOCK_CUT, "cut-clipboard",
have_selection &&
range_contains_editable_text (&sel_start, &sel_end,
priv->editable));
append_action_signal (text_view, priv->popup_menu, GTK_STOCK_COPY, "copy-clipboard",
have_selection);
append_action_signal (text_view, priv->popup_menu, GTK_STOCK_PASTE, "paste-clipboard",
can_insert && clipboard_contains_text);
menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_DELETE, NULL);
gtk_widget_set_sensitive (menuitem,
have_selection &&
range_contains_editable_text (&sel_start, &sel_end,
priv->editable));
g_signal_connect_swapped (menuitem, "activate",
G_CALLBACK (delete_cb), text_view);
gtk_widget_show (menuitem);
gtk_menu_shell_append (GTK_MENU_SHELL (priv->popup_menu), menuitem);
menuitem = gtk_separator_menu_item_new ();
gtk_widget_show (menuitem);
gtk_menu_shell_append (GTK_MENU_SHELL (priv->popup_menu), menuitem);
menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_SELECT_ALL, NULL);
gtk_widget_set_sensitive (menuitem,
gtk_text_buffer_get_char_count (priv->buffer) > 0);
g_signal_connect (menuitem, "activate",
G_CALLBACK (select_all_cb), text_view);
gtk_widget_show (menuitem);
gtk_menu_shell_append (GTK_MENU_SHELL (priv->popup_menu), menuitem);
g_object_get (gtk_widget_get_settings (GTK_WIDGET (text_view)),
"gtk-show-input-method-menu", &show_input_method_menu,
"gtk-show-unicode-menu", &show_unicode_menu,
NULL);
if (show_input_method_menu || show_unicode_menu)
{
menuitem = gtk_separator_menu_item_new ();
gtk_widget_show (menuitem);
gtk_menu_shell_append (GTK_MENU_SHELL (priv->popup_menu), menuitem);
}
if (show_input_method_menu)
{
menuitem = gtk_menu_item_new_with_mnemonic (_("Input _Methods"));
gtk_widget_show (menuitem);
gtk_widget_set_sensitive (menuitem, can_insert);
submenu = gtk_menu_new ();
gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), submenu);
gtk_menu_shell_append (GTK_MENU_SHELL (priv->popup_menu), menuitem);
gtk_im_multicontext_append_menuitems (GTK_IM_MULTICONTEXT (priv->im_context),
GTK_MENU_SHELL (submenu));
}
if (show_unicode_menu)
{
menuitem = gtk_menu_item_new_with_mnemonic (_("_Insert Unicode Control Character"));
gtk_widget_show (menuitem);
gtk_widget_set_sensitive (menuitem, can_insert);
submenu = gtk_menu_new ();
gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), submenu);
gtk_menu_shell_append (GTK_MENU_SHELL (priv->popup_menu), menuitem);
_gtk_text_util_append_special_char_menuitems (GTK_MENU_SHELL (submenu),
unichar_chosen_func,
text_view);
}
g_signal_emit (text_view,
signals[POPULATE_POPUP],
0,
priv->popup_menu);
if (info->button)
gtk_menu_popup (GTK_MENU (priv->popup_menu), NULL, NULL,
NULL, NULL,
info->button, info->time);
else
{
gtk_menu_popup (GTK_MENU (priv->popup_menu), NULL, NULL,
popup_position_func, text_view,
0, gtk_get_current_event_time ());
gtk_menu_shell_select_first (GTK_MENU_SHELL (priv->popup_menu), FALSE);
}
}
g_object_unref (text_view);
g_free (info);
}
static void
gtk_text_view_do_popup (GtkTextView *text_view,
GdkEventButton *event)
{
PopupInfo *info = g_new (PopupInfo, 1);
/* In order to know what entries we should make sensitive, we
* ask for the current targets of the clipboard, and when
* we get them, then we actually pop up the menu.
*/
info->text_view = g_object_ref (text_view);
if (event)
{
info->button = event->button;
info->time = event->time;
}
else
{
info->button = 0;
info->time = gtk_get_current_event_time ();
}
gtk_clipboard_request_contents (gtk_widget_get_clipboard (GTK_WIDGET (text_view),
GDK_SELECTION_CLIPBOARD),
gdk_atom_intern_static_string ("TARGETS"),
popup_targets_received,
info);
}
static gboolean
gtk_text_view_popup_menu (GtkWidget *widget)
{
gtk_text_view_do_popup (GTK_TEXT_VIEW (widget), NULL);
return TRUE;
}
/* Child GdkWindows */
static GtkTextWindow*
text_window_new (GtkTextWindowType type,
GtkWidget *widget,
gint width_request,
gint height_request)
{
GtkTextWindow *win;
win = g_new (GtkTextWindow, 1);
win->type = type;
win->widget = widget;
win->window = NULL;
win->bin_window = NULL;
win->requisition.width = width_request;
win->requisition.height = height_request;
win->allocation.width = width_request;
win->allocation.height = height_request;
win->allocation.x = 0;
win->allocation.y = 0;
return win;
}
static void
text_window_free (GtkTextWindow *win)
{
if (win->window)
text_window_unrealize (win);
g_free (win);
}
static void
text_window_realize (GtkTextWindow *win,
GtkWidget *widget)
{
GtkStyleContext *context;
GtkStateFlags state;
GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
GdkCursor *cursor;
GdkRGBA color;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = win->allocation.x;
attributes.y = win->allocation.y;
attributes.width = win->allocation.width;
attributes.height = win->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (win->widget);
attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
window = gtk_widget_get_window (widget);
win->window = gdk_window_new (window,
&attributes, attributes_mask);
gdk_window_show (win->window);
gdk_window_set_user_data (win->window, win->widget);
gdk_window_lower (win->window);
attributes.x = 0;
attributes.y = 0;
attributes.width = win->allocation.width;
attributes.height = win->allocation.height;
attributes.event_mask = (GDK_EXPOSURE_MASK |
GDK_SCROLL_MASK |
GDK_KEY_PRESS_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
gtk_widget_get_events (win->widget));
win->bin_window = gdk_window_new (win->window,
&attributes,
attributes_mask);
gdk_window_show (win->bin_window);
gdk_window_set_user_data (win->bin_window, win->widget);
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
if (win->type == GTK_TEXT_WINDOW_TEXT)
{
if (gtk_widget_is_sensitive (widget))
{
/* I-beam cursor */
cursor = gdk_cursor_new_for_display (gdk_window_get_display (window),
GDK_XTERM);
gdk_window_set_cursor (win->bin_window, cursor);
g_object_unref (cursor);
}
gtk_im_context_set_client_window (GTK_TEXT_VIEW (widget)->priv->im_context,
win->window);
gtk_style_context_save (context);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
gtk_style_context_get_background_color (context, state, &color);
gdk_window_set_background_rgba (win->bin_window, &color);
gtk_style_context_restore (context);
}
else
{
gtk_style_context_get_background_color (context, state, &color);
gdk_window_set_background_rgba (win->bin_window, &color);
}
g_object_set_qdata (G_OBJECT (win->window),
g_quark_from_static_string ("gtk-text-view-text-window"),
win);
g_object_set_qdata (G_OBJECT (win->bin_window),
g_quark_from_static_string ("gtk-text-view-text-window"),
win);
}
static void
text_window_unrealize (GtkTextWindow *win)
{
if (win->type == GTK_TEXT_WINDOW_TEXT)
{
gtk_im_context_set_client_window (GTK_TEXT_VIEW (win->widget)->priv->im_context,
NULL);
}
gdk_window_set_user_data (win->window, NULL);
gdk_window_set_user_data (win->bin_window, NULL);
gdk_window_destroy (win->bin_window);
gdk_window_destroy (win->window);
win->window = NULL;
win->bin_window = NULL;
}
static void
text_window_size_allocate (GtkTextWindow *win,
GdkRectangle *rect)
{
win->allocation = *rect;
if (win->window)
{
gdk_window_move_resize (win->window,
rect->x, rect->y,
rect->width, rect->height);
gdk_window_resize (win->bin_window,
rect->width, rect->height);
}
}
static void
text_window_scroll (GtkTextWindow *win,
gint dx,
gint dy)
{
if (dx != 0 || dy != 0)
{
gdk_window_scroll (win->bin_window, dx, dy);
}
}
static void
text_window_invalidate_rect (GtkTextWindow *win,
GdkRectangle *rect)
{
GdkRectangle window_rect;
gtk_text_view_buffer_to_window_coords (GTK_TEXT_VIEW (win->widget),
win->type,
rect->x,
rect->y,
&window_rect.x,
&window_rect.y);
window_rect.width = rect->width;
window_rect.height = rect->height;
/* Adjust the rect as appropriate */
switch (win->type)
{
case GTK_TEXT_WINDOW_TEXT:
break;
case GTK_TEXT_WINDOW_LEFT:
case GTK_TEXT_WINDOW_RIGHT:
window_rect.x = 0;
window_rect.width = win->allocation.width;
break;
case GTK_TEXT_WINDOW_TOP:
case GTK_TEXT_WINDOW_BOTTOM:
window_rect.y = 0;
window_rect.height = win->allocation.height;
break;
default:
g_warning ("%s: bug!", G_STRFUNC);
return;
break;
}
gdk_window_invalidate_rect (win->bin_window, &window_rect, FALSE);
#if 0
{
cairo_t *cr = gdk_cairo_create (win->bin_window);
gdk_cairo_rectangle (cr, &window_rect);
cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); /* red */
cairo_fill (cr);
cairo_destroy (cr);
}
#endif
}
static void
text_window_invalidate_cursors (GtkTextWindow *win)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkTextIter iter;
GdkRectangle strong;
GdkRectangle weak;
gboolean draw_arrow;
gfloat cursor_aspect_ratio;
gint stem_width;
gint arrow_width;
text_view = GTK_TEXT_VIEW (win->widget);
priv = text_view->priv;
gtk_text_buffer_get_iter_at_mark (priv->buffer, &iter,
gtk_text_buffer_get_insert (priv->buffer));
if (_gtk_text_layout_get_block_cursor (priv->layout, &strong))
{
text_window_invalidate_rect (win, &strong);
return;
}
gtk_text_layout_get_cursor_locations (priv->layout, &iter,
&strong, &weak);
/* cursor width calculation as in gtkstyle.c:draw_insertion_cursor(),
* ignoring the text direction be exposing both sides of the cursor
*/
draw_arrow = (strong.x != weak.x || strong.y != weak.y);
gtk_widget_style_get (win->widget,
"cursor-aspect-ratio", &cursor_aspect_ratio,
NULL);
stem_width = strong.height * cursor_aspect_ratio + 1;
arrow_width = stem_width + 1;
strong.width = stem_width;
/* round up to the next even number */
if (stem_width & 1)
stem_width++;
strong.x -= stem_width / 2;
strong.width += stem_width;
if (draw_arrow)
{
strong.x -= arrow_width;
strong.width += arrow_width * 2;
}
text_window_invalidate_rect (win, &strong);
if (draw_arrow) /* == have weak */
{
stem_width = weak.height * cursor_aspect_ratio + 1;
arrow_width = stem_width + 1;
weak.width = stem_width;
/* round up to the next even number */
if (stem_width & 1)
stem_width++;
weak.x -= stem_width / 2;
weak.width += stem_width;
weak.x -= arrow_width;
weak.width += arrow_width * 2;
text_window_invalidate_rect (win, &weak);
}
}
static gint
text_window_get_width (GtkTextWindow *win)
{
return win->allocation.width;
}
static gint
text_window_get_height (GtkTextWindow *win)
{
return win->allocation.height;
}
/* Windows */
/**
* gtk_text_view_get_window:
* @text_view: a #GtkTextView
* @win: window to get
*
* Retrieves the #GdkWindow corresponding to an area of the text view;
* possible windows include the overall widget window, child windows
* on the left, right, top, bottom, and the window that displays the
* text buffer. Windows are %NULL and nonexistent if their width or
* height is 0, and are nonexistent before the widget has been
* realized.
*
* Return value: (transfer none): a #GdkWindow, or %NULL
**/
GdkWindow*
gtk_text_view_get_window (GtkTextView *text_view,
GtkTextWindowType win)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
switch (win)
{
case GTK_TEXT_WINDOW_WIDGET:
return gtk_widget_get_window (GTK_WIDGET (text_view));
break;
case GTK_TEXT_WINDOW_TEXT:
return priv->text_window->bin_window;
break;
case GTK_TEXT_WINDOW_LEFT:
if (priv->left_window)
return priv->left_window->bin_window;
else
return NULL;
break;
case GTK_TEXT_WINDOW_RIGHT:
if (priv->right_window)
return priv->right_window->bin_window;
else
return NULL;
break;
case GTK_TEXT_WINDOW_TOP:
if (priv->top_window)
return priv->top_window->bin_window;
else
return NULL;
break;
case GTK_TEXT_WINDOW_BOTTOM:
if (priv->bottom_window)
return priv->bottom_window->bin_window;
else
return NULL;
break;
case GTK_TEXT_WINDOW_PRIVATE:
g_warning ("%s: You can't get GTK_TEXT_WINDOW_PRIVATE, it has \"PRIVATE\" in the name because it is private.", G_STRFUNC);
return NULL;
break;
}
g_warning ("%s: Unknown GtkTextWindowType", G_STRFUNC);
return NULL;
}
/**
* gtk_text_view_get_window_type:
* @text_view: a #GtkTextView
* @window: a window type
*
* Usually used to find out which window an event corresponds to.
* If you connect to an event signal on @text_view, this function
* should be called on <literal>event-&gt;window</literal> to
* see which window it was.
*
* Return value: the window type.
**/
GtkTextWindowType
gtk_text_view_get_window_type (GtkTextView *text_view,
GdkWindow *window)
{
GtkTextWindow *win;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
if (window == gtk_widget_get_window (GTK_WIDGET (text_view)))
return GTK_TEXT_WINDOW_WIDGET;
win = g_object_get_qdata (G_OBJECT (window),
g_quark_try_string ("gtk-text-view-text-window"));
if (win)
return win->type;
else
{
return GTK_TEXT_WINDOW_PRIVATE;
}
}
static void
buffer_to_widget (GtkTextView *text_view,
gint buffer_x,
gint buffer_y,
gint *window_x,
gint *window_y)
{
GtkTextViewPrivate *priv = text_view->priv;
if (window_x)
{
*window_x = buffer_x - priv->xoffset;
*window_x += priv->text_window->allocation.x;
}
if (window_y)
{
*window_y = buffer_y - priv->yoffset;
*window_y += priv->text_window->allocation.y;
}
}
static void
widget_to_text_window (GtkTextWindow *win,
gint widget_x,
gint widget_y,
gint *window_x,
gint *window_y)
{
if (window_x)
*window_x = widget_x - win->allocation.x;
if (window_y)
*window_y = widget_y - win->allocation.y;
}
static void
buffer_to_text_window (GtkTextView *text_view,
GtkTextWindow *win,
gint buffer_x,
gint buffer_y,
gint *window_x,
gint *window_y)
{
if (win == NULL)
{
g_warning ("Attempt to convert text buffer coordinates to coordinates "
"for a nonexistent or private child window of GtkTextView");
return;
}
buffer_to_widget (text_view,
buffer_x, buffer_y,
window_x, window_y);
widget_to_text_window (win,
window_x ? *window_x : 0,
window_y ? *window_y : 0,
window_x,
window_y);
}
/**
* gtk_text_view_buffer_to_window_coords:
* @text_view: a #GtkTextView
* @win: a #GtkTextWindowType except #GTK_TEXT_WINDOW_PRIVATE
* @buffer_x: buffer x coordinate
* @buffer_y: buffer y coordinate
* @window_x: (out) (allow-none): window x coordinate return location or %NULL
* @window_y: (out) (allow-none): window y coordinate return location or %NULL
*
* Converts coordinate (@buffer_x, @buffer_y) to coordinates for the window
* @win, and stores the result in (@window_x, @window_y).
*
* Note that you can't convert coordinates for a nonexisting window (see
* gtk_text_view_set_border_window_size()).
**/
void
gtk_text_view_buffer_to_window_coords (GtkTextView *text_view,
GtkTextWindowType win,
gint buffer_x,
gint buffer_y,
gint *window_x,
gint *window_y)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
switch (win)
{
case GTK_TEXT_WINDOW_WIDGET:
buffer_to_widget (text_view,
buffer_x, buffer_y,
window_x, window_y);
break;
case GTK_TEXT_WINDOW_TEXT:
if (window_x)
*window_x = buffer_x - priv->xoffset;
if (window_y)
*window_y = buffer_y - priv->yoffset;
break;
case GTK_TEXT_WINDOW_LEFT:
buffer_to_text_window (text_view,
priv->left_window,
buffer_x, buffer_y,
window_x, window_y);
break;
case GTK_TEXT_WINDOW_RIGHT:
buffer_to_text_window (text_view,
priv->right_window,
buffer_x, buffer_y,
window_x, window_y);
break;
case GTK_TEXT_WINDOW_TOP:
buffer_to_text_window (text_view,
priv->top_window,
buffer_x, buffer_y,
window_x, window_y);
break;
case GTK_TEXT_WINDOW_BOTTOM:
buffer_to_text_window (text_view,
priv->bottom_window,
buffer_x, buffer_y,
window_x, window_y);
break;
case GTK_TEXT_WINDOW_PRIVATE:
g_warning ("%s: can't get coords for private windows", G_STRFUNC);
break;
default:
g_warning ("%s: Unknown GtkTextWindowType", G_STRFUNC);
break;
}
}
static void
widget_to_buffer (GtkTextView *text_view,
gint widget_x,
gint widget_y,
gint *buffer_x,
gint *buffer_y)
{
GtkTextViewPrivate *priv = text_view->priv;
if (buffer_x)
{
*buffer_x = widget_x + priv->xoffset;
*buffer_x -= priv->text_window->allocation.x;
}
if (buffer_y)
{
*buffer_y = widget_y + priv->yoffset;
*buffer_y -= priv->text_window->allocation.y;
}
}
static void
text_window_to_widget (GtkTextWindow *win,
gint window_x,
gint window_y,
gint *widget_x,
gint *widget_y)
{
if (widget_x)
*widget_x = window_x + win->allocation.x;
if (widget_y)
*widget_y = window_y + win->allocation.y;
}
static void
text_window_to_buffer (GtkTextView *text_view,
GtkTextWindow *win,
gint window_x,
gint window_y,
gint *buffer_x,
gint *buffer_y)
{
if (win == NULL)
{
g_warning ("Attempt to convert GtkTextView buffer coordinates into "
"coordinates for a nonexistent child window.");
return;
}
text_window_to_widget (win,
window_x,
window_y,
buffer_x,
buffer_y);
widget_to_buffer (text_view,
buffer_x ? *buffer_x : 0,
buffer_y ? *buffer_y : 0,
buffer_x,
buffer_y);
}
/**
* gtk_text_view_window_to_buffer_coords:
* @text_view: a #GtkTextView
* @win: a #GtkTextWindowType except #GTK_TEXT_WINDOW_PRIVATE
* @window_x: window x coordinate
* @window_y: window y coordinate
* @buffer_x: (out) (allow-none): buffer x coordinate return location or %NULL
* @buffer_y: (out) (allow-none): buffer y coordinate return location or %NULL
*
* Converts coordinates on the window identified by @win to buffer
* coordinates, storing the result in (@buffer_x,@buffer_y).
*
* Note that you can't convert coordinates for a nonexisting window (see
* gtk_text_view_set_border_window_size()).
**/
void
gtk_text_view_window_to_buffer_coords (GtkTextView *text_view,
GtkTextWindowType win,
gint window_x,
gint window_y,
gint *buffer_x,
gint *buffer_y)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
switch (win)
{
case GTK_TEXT_WINDOW_WIDGET:
widget_to_buffer (text_view,
window_x, window_y,
buffer_x, buffer_y);
break;
case GTK_TEXT_WINDOW_TEXT:
if (buffer_x)
*buffer_x = window_x + priv->xoffset;
if (buffer_y)
*buffer_y = window_y + priv->yoffset;
break;
case GTK_TEXT_WINDOW_LEFT:
text_window_to_buffer (text_view,
priv->left_window,
window_x, window_y,
buffer_x, buffer_y);
break;
case GTK_TEXT_WINDOW_RIGHT:
text_window_to_buffer (text_view,
priv->right_window,
window_x, window_y,
buffer_x, buffer_y);
break;
case GTK_TEXT_WINDOW_TOP:
text_window_to_buffer (text_view,
priv->top_window,
window_x, window_y,
buffer_x, buffer_y);
break;
case GTK_TEXT_WINDOW_BOTTOM:
text_window_to_buffer (text_view,
priv->bottom_window,
window_x, window_y,
buffer_x, buffer_y);
break;
case GTK_TEXT_WINDOW_PRIVATE:
g_warning ("%s: can't get coords for private windows", G_STRFUNC);
break;
default:
g_warning ("%s: Unknown GtkTextWindowType", G_STRFUNC);
break;
}
}
static void
set_window_width (GtkTextView *text_view,
gint width,
GtkTextWindowType type,
GtkTextWindow **winp)
{
if (width == 0)
{
if (*winp)
{
text_window_free (*winp);
*winp = NULL;
gtk_widget_queue_resize (GTK_WIDGET (text_view));
}
}
else
{
if (*winp == NULL)
{
*winp = text_window_new (type,
GTK_WIDGET (text_view),
width, 0);
/* if the widget is already realized we need to realize the child manually */
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
text_window_realize (*winp, GTK_WIDGET (text_view));
}
else
{
if ((*winp)->requisition.width == width)
return;
(*winp)->requisition.width = width;
}
gtk_widget_queue_resize (GTK_WIDGET (text_view));
}
}
static void
set_window_height (GtkTextView *text_view,
gint height,
GtkTextWindowType type,
GtkTextWindow **winp)
{
if (height == 0)
{
if (*winp)
{
text_window_free (*winp);
*winp = NULL;
gtk_widget_queue_resize (GTK_WIDGET (text_view));
}
}
else
{
if (*winp == NULL)
{
*winp = text_window_new (type,
GTK_WIDGET (text_view),
0, height);
/* if the widget is already realized we need to realize the child manually */
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
text_window_realize (*winp, GTK_WIDGET (text_view));
}
else
{
if ((*winp)->requisition.height == height)
return;
(*winp)->requisition.height = height;
}
gtk_widget_queue_resize (GTK_WIDGET (text_view));
}
}
/**
* gtk_text_view_set_border_window_size:
* @text_view: a #GtkTextView
* @type: window to affect
* @size: width or height of the window
*
* Sets the width of %GTK_TEXT_WINDOW_LEFT or %GTK_TEXT_WINDOW_RIGHT,
* or the height of %GTK_TEXT_WINDOW_TOP or %GTK_TEXT_WINDOW_BOTTOM.
* Automatically destroys the corresponding window if the size is set
* to 0, and creates the window if the size is set to non-zero. This
* function can only be used for the "border windows," it doesn't work
* with #GTK_TEXT_WINDOW_WIDGET, #GTK_TEXT_WINDOW_TEXT, or
* #GTK_TEXT_WINDOW_PRIVATE.
**/
void
gtk_text_view_set_border_window_size (GtkTextView *text_view,
GtkTextWindowType type,
gint size)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (size >= 0);
switch (type)
{
case GTK_TEXT_WINDOW_LEFT:
set_window_width (text_view, size, GTK_TEXT_WINDOW_LEFT,
&priv->left_window);
break;
case GTK_TEXT_WINDOW_RIGHT:
set_window_width (text_view, size, GTK_TEXT_WINDOW_RIGHT,
&priv->right_window);
break;
case GTK_TEXT_WINDOW_TOP:
set_window_height (text_view, size, GTK_TEXT_WINDOW_TOP,
&priv->top_window);
break;
case GTK_TEXT_WINDOW_BOTTOM:
set_window_height (text_view, size, GTK_TEXT_WINDOW_BOTTOM,
&priv->bottom_window);
break;
default:
g_warning ("Can only set size of left/right/top/bottom border windows with gtk_text_view_set_border_window_size()");
break;
}
}
/**
* gtk_text_view_get_border_window_size:
* @text_view: a #GtkTextView
* @type: window to return size from
*
* Gets the width of the specified border window. See
* gtk_text_view_set_border_window_size().
*
* Return value: width of window
**/
gint
gtk_text_view_get_border_window_size (GtkTextView *text_view,
GtkTextWindowType type)
{
GtkTextViewPrivate *priv = text_view->priv;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
switch (type)
{
case GTK_TEXT_WINDOW_LEFT:
if (priv->left_window)
return priv->left_window->requisition.width;
break;
case GTK_TEXT_WINDOW_RIGHT:
if (priv->right_window)
return priv->right_window->requisition.width;
break;
case GTK_TEXT_WINDOW_TOP:
if (priv->top_window)
return priv->top_window->requisition.height;
break;
case GTK_TEXT_WINDOW_BOTTOM:
if (priv->bottom_window)
return priv->bottom_window->requisition.height;
break;
default:
g_warning ("Can only get size of left/right/top/bottom border windows with gtk_text_view_get_border_window_size()");
break;
}
return 0;
}
/*
* Child widgets
*/
static GtkTextViewChild*
text_view_child_new_anchored (GtkWidget *child,
GtkTextChildAnchor *anchor,
GtkTextLayout *layout)
{
GtkTextViewChild *vc;
vc = g_new (GtkTextViewChild, 1);
vc->type = GTK_TEXT_WINDOW_PRIVATE;
vc->widget = child;
vc->anchor = anchor;
vc->from_top_of_line = 0;
vc->from_left_of_buffer = 0;
g_object_ref (vc->widget);
g_object_ref (vc->anchor);
g_object_set_data (G_OBJECT (child),
I_("gtk-text-view-child"),
vc);
gtk_text_child_anchor_register_child (anchor, child, layout);
return vc;
}
static GtkTextViewChild*
text_view_child_new_window (GtkWidget *child,
GtkTextWindowType type,
gint x,
gint y)
{
GtkTextViewChild *vc;
vc = g_new (GtkTextViewChild, 1);
vc->widget = child;
vc->anchor = NULL;
vc->from_top_of_line = 0;
vc->from_left_of_buffer = 0;
g_object_ref (vc->widget);
vc->type = type;
vc->x = x;
vc->y = y;
g_object_set_data (G_OBJECT (child),
I_("gtk-text-view-child"),
vc);
return vc;
}
static void
text_view_child_free (GtkTextViewChild *child)
{
g_object_set_data (G_OBJECT (child->widget),
I_("gtk-text-view-child"), NULL);
if (child->anchor)
{
gtk_text_child_anchor_unregister_child (child->anchor,
child->widget);
g_object_unref (child->anchor);
}
g_object_unref (child->widget);
g_free (child);
}
static void
text_view_child_set_parent_window (GtkTextView *text_view,
GtkTextViewChild *vc)
{
if (vc->anchor)
gtk_widget_set_parent_window (vc->widget,
text_view->priv->text_window->bin_window);
else
{
GdkWindow *window;
window = gtk_text_view_get_window (text_view,
vc->type);
gtk_widget_set_parent_window (vc->widget, window);
}
}
static void
add_child (GtkTextView *text_view,
GtkTextViewChild *vc)
{
text_view->priv->children = g_slist_prepend (text_view->priv->children,
vc);
if (gtk_widget_get_realized (GTK_WIDGET (text_view)))
text_view_child_set_parent_window (text_view, vc);
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)
{
GtkTextViewChild *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 = text_view_child_new_anchored (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));
}
/**
* gtk_text_view_add_child_in_window:
* @text_view: a #GtkTextView
* @child: a #GtkWidget
* @which_window: which window the child should appear in
* @xpos: X position of child in window coordinates
* @ypos: Y position of child in window coordinates
*
* Adds a child at fixed coordinates in one of the text widget's
* windows.
*
* The window must have nonzero size (see
* gtk_text_view_set_border_window_size()). Note that the child
* coordinates are given relative to the #GdkWindow in question, and
* that these coordinates have no sane relationship to scrolling. When
* placing a child in #GTK_TEXT_WINDOW_WIDGET, scrolling is
* irrelevant, the child floats above all scrollable areas. But when
* placing a child in one of the scrollable windows (border windows or
* text window), you'll need to compute the child's correct position
* in buffer coordinates any time scrolling occurs or buffer changes
* occur, and then call gtk_text_view_move_child() to update the
* child's position.
*/
void
gtk_text_view_add_child_in_window (GtkTextView *text_view,
GtkWidget *child,
GtkTextWindowType which_window,
gint xpos,
gint ypos)
{
GtkTextViewChild *vc;
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);
vc = text_view_child_new_window (child, which_window,
xpos, ypos);
add_child (text_view, vc);
g_assert (vc->widget == child);
g_assert (gtk_widget_get_parent (child) == GTK_WIDGET (text_view));
}
/**
* gtk_text_view_move_child:
* @text_view: a #GtkTextView
* @child: child widget already added to the text view
* @xpos: new X position in window coordinates
* @ypos: new Y position in window coordinates
*
* Updates the position of a child, as for gtk_text_view_add_child_in_window().
**/
void
gtk_text_view_move_child (GtkTextView *text_view,
GtkWidget *child,
gint xpos,
gint ypos)
{
GtkTextViewChild *vc;
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) == GTK_WIDGET (text_view));
vc = g_object_get_data (G_OBJECT (child),
"gtk-text-view-child");
g_assert (vc != NULL);
if (vc->x == xpos &&
vc->y == ypos)
return;
vc->x = xpos;
vc->y = ypos;
if (gtk_widget_get_visible (child) &&
gtk_widget_get_visible (GTK_WIDGET (text_view)))
gtk_widget_queue_resize (child);
}
/* 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.
*
* Return value: %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.
*
* Return value: %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.
*
* Return value: %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.
*
* Return value: %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 gtk_text_view_forward_display_line() for an explanation of
* display lines vs. paragraphs.
*
* Return value: %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.
*
* Return value: %TRUE if @iter moved and is not on the end iterator
**/
gboolean
gtk_text_view_move_visually (GtkTextView *text_view,
GtkTextIter *iter,
gint 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);
}
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