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gtktextview.c
9765 lines (8141 loc) · 313 KB
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gtktextview.c
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/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */
/* GTK - The GIMP Toolkit
* gtktextview.c Copyright (C) 2000 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtktextviewprivate.h"
#include <string.h>
#include "gtkadjustmentprivate.h"
#include "gtkcsscolorvalueprivate.h"
#include "gtkdebug.h"
#include "gtkdropcontrollermotion.h"
#include "gtkintl.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkrenderbackgroundprivate.h"
#include "gtksettings.h"
#include "gtktextiterprivate.h"
#include "gtkimmulticontext.h"
#include "gtkprivate.h"
#include "gtktextutil.h"
#include "gtkwidgetprivate.h"
#include "gtkwindow.h"
#include "gtkscrollable.h"
#include "gtktypebuiltins.h"
#include "gtktextviewchildprivate.h"
#include "gtktexthandleprivate.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtkpopover.h"
#include "gtkmagnifierprivate.h"
#include "gtkemojichooser.h"
#include "gtkpango.h"
#include "gtknative.h"
#include "gtkwidgetprivate.h"
/**
* SECTION:gtktextview
* @Short_description: Widget that displays a GtkTextBuffer
* @Title: GtkTextView
* @See_also: #GtkTextBuffer, #GtkTextIter
*
* You may wish to begin by reading the
* [text widget conceptual overview][TextWidget]
* which gives an overview of all the objects and data
* types related to the text widget and how they work together.
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* textview.view
* ├── border.top
* ├── border.left
* ├── text
* │ ╰── [selection]
* ├── border.right
* ├── border.bottom
* ╰── [window.popup]
* ]|
*
* GtkTextView has a main css node with name textview and style class .view,
* and subnodes for each of the border windows, and the main text area,
* with names border and text, respectively. The border nodes each get
* one of the style classes .left, .right, .top or .bottom.
*
* A node representing the selection will appear below the text node.
*
* If a context menu is opened, the window node will appear as a subnode
* of the main node.
*
* # Accessibility
*
* GtkTextView uses the #GTK_ACCESSIBLE_ROLE_TEXT_BOX role.
*/
/* How scrolling, validation, exposes, etc. work.
*
* The expose_event handler has the invariant that the onscreen lines
* have been validated.
*
* There are two ways that onscreen lines can become invalid. The first
* is to change which lines are onscreen. This happens when the value
* of a scroll adjustment changes. So the code path begins in
* gtk_text_view_value_changed() and goes like this:
* - gdk_surface_scroll() to reflect the new adjustment value
* - validate the lines that were moved onscreen
* - gdk_surface_process_updates() to handle the exposes immediately
*
* The second way is that you get the “invalidated” signal from the layout,
* indicating that lines have become invalid. This code path begins in
* invalidated_handler() and goes like this:
* - install high-priority idle which does the rest of the steps
* - if a scroll is pending from scroll_to_mark(), do the scroll,
* jumping to the gtk_text_view_value_changed() code path
* - otherwise, validate the onscreen lines
* - DO NOT process updates
*
* In both cases, validating the onscreen lines can trigger a scroll
* due to maintaining the first_para on the top of the screen.
* If validation triggers a scroll, we jump to the top of the code path
* for value_changed, and bail out of the current code path.
*
* Also, in size_allocate, if we invalidate some lines from changing
* the layout width, we need to go ahead and run the high-priority idle,
* because GTK sends exposes right after doing the size allocates without
* returning to the main loop. This is also why the high-priority idle
* is at a higher priority than resizing.
*
*/
#if 0
#define DEBUG_VALIDATION_AND_SCROLLING
#endif
#ifdef DEBUG_VALIDATION_AND_SCROLLING
#define DV(x) (x)
#else
#define DV(x)
#endif
#define SCREEN_WIDTH(widget) text_window_get_width (GTK_TEXT_VIEW (widget)->priv->text_window)
#define SCREEN_HEIGHT(widget) text_window_get_height (GTK_TEXT_VIEW (widget)->priv->text_window)
#define SPACE_FOR_CURSOR 1
typedef struct _GtkTextWindow GtkTextWindow;
typedef struct _GtkTextPendingScroll GtkTextPendingScroll;
enum
{
TEXT_HANDLE_CURSOR,
TEXT_HANDLE_SELECTION_BOUND,
TEXT_HANDLE_N_HANDLES
};
struct _GtkTextViewPrivate
{
GtkTextLayout *layout;
GtkTextBuffer *buffer;
guint blink_time; /* time in msec the cursor has blinked since last user event */
guint im_spot_idle;
char *im_module;
int dnd_x;
int dnd_y;
GtkTextHandle *text_handles[TEXT_HANDLE_N_HANDLES];
GtkWidget *selection_bubble;
guint selection_bubble_timeout_id;
GtkWidget *magnifier_popover;
GtkWidget *magnifier;
GtkBorder border_window_size;
GtkTextWindow *text_window;
GQueue anchored_children;
GtkTextViewChild *left_child;
GtkTextViewChild *right_child;
GtkTextViewChild *top_child;
GtkTextViewChild *bottom_child;
GtkTextViewChild *center_child;
GtkAdjustment *hadjustment;
GtkAdjustment *vadjustment;
/* X offset between widget coordinates and buffer coordinates
* taking left_padding in account
*/
int xoffset;
/* Y offset between widget coordinates and buffer coordinates
* taking top_padding and top_margin in account
*/
int yoffset;
/* Width and height of the buffer */
int width;
int height;
/* The virtual cursor position is normally the same as the
* actual (strong) cursor position, except in two circumstances:
*
* a) When the cursor is moved vertically with the keyboard
* b) When the text view is scrolled with the keyboard
*
* In case a), virtual_cursor_x is preserved, but not virtual_cursor_y
* In case b), both virtual_cursor_x and virtual_cursor_y are preserved.
*/
int virtual_cursor_x; /* -1 means use actual cursor position */
int virtual_cursor_y; /* -1 means use actual cursor position */
GtkTextMark *first_para_mark; /* Mark at the beginning of the first onscreen paragraph */
int first_para_pixels; /* Offset of top of screen in the first onscreen paragraph */
guint64 blink_start_time;
guint blink_tick;
float cursor_alpha;
guint scroll_timeout;
guint first_validate_idle; /* Idle to revalidate onscreen portion, runs before resize */
guint incremental_validate_idle; /* Idle to revalidate offscreen portions, runs after redraw */
GtkTextMark *dnd_mark;
GtkIMContext *im_context;
GtkWidget *popup_menu;
GMenuModel *extra_menu;
GtkTextPendingScroll *pending_scroll;
GtkGesture *drag_gesture;
GtkEventController *key_controller;
GtkCssNode *selection_node;
GdkDrag *drag;
/* Default style settings */
int pixels_above_lines;
int pixels_below_lines;
int pixels_inside_wrap;
GtkWrapMode wrap_mode;
GtkJustification justify;
int left_margin;
int right_margin;
int top_margin;
int bottom_margin;
int left_padding;
int right_padding;
int top_padding;
int bottom_padding;
int indent;
gint64 handle_place_time;
PangoTabArray *tabs;
guint editable : 1;
guint overwrite_mode : 1;
guint cursor_visible : 1;
/* if we have reset the IM since the last character entered */
guint need_im_reset : 1;
guint accepts_tab : 1;
/* debug flag - means that we've validated onscreen since the
* last "invalidate" signal from the layout
*/
guint onscreen_validated : 1;
guint mouse_cursor_obscured : 1;
guint scroll_after_paste : 1;
guint text_handles_enabled : 1;
/* GtkScrollablePolicy needs to be checked when
* driving the scrollable adjustment values */
guint hscroll_policy : 1;
guint vscroll_policy : 1;
guint cursor_handle_dragged : 1;
guint selection_handle_dragged : 1;
};
struct _GtkTextPendingScroll
{
GtkTextMark *mark;
double within_margin;
gboolean use_align;
double xalign;
double yalign;
};
typedef enum
{
SELECT_CHARACTERS,
SELECT_WORDS,
SELECT_LINES
} SelectionGranularity;
enum
{
MOVE_CURSOR,
PAGE_HORIZONTALLY,
SET_ANCHOR,
INSERT_AT_CURSOR,
DELETE_FROM_CURSOR,
BACKSPACE,
CUT_CLIPBOARD,
COPY_CLIPBOARD,
PASTE_CLIPBOARD,
TOGGLE_OVERWRITE,
MOVE_VIEWPORT,
SELECT_ALL,
TOGGLE_CURSOR_VISIBLE,
PREEDIT_CHANGED,
EXTEND_SELECTION,
INSERT_EMOJI,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_PIXELS_ABOVE_LINES,
PROP_PIXELS_BELOW_LINES,
PROP_PIXELS_INSIDE_WRAP,
PROP_EDITABLE,
PROP_WRAP_MODE,
PROP_JUSTIFICATION,
PROP_LEFT_MARGIN,
PROP_RIGHT_MARGIN,
PROP_TOP_MARGIN,
PROP_BOTTOM_MARGIN,
PROP_INDENT,
PROP_TABS,
PROP_CURSOR_VISIBLE,
PROP_BUFFER,
PROP_OVERWRITE,
PROP_ACCEPTS_TAB,
PROP_IM_MODULE,
PROP_HADJUSTMENT,
PROP_VADJUSTMENT,
PROP_HSCROLL_POLICY,
PROP_VSCROLL_POLICY,
PROP_INPUT_PURPOSE,
PROP_INPUT_HINTS,
PROP_MONOSPACE,
PROP_EXTRA_MENU
};
static GQuark quark_text_selection_data = 0;
static GQuark quark_gtk_signal = 0;
static GQuark quark_text_view_child = 0;
static void gtk_text_view_finalize (GObject *object);
static void gtk_text_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_text_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_text_view_dispose (GObject *object);
static void gtk_text_view_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline);
static void gtk_text_view_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline);
static void gtk_text_view_realize (GtkWidget *widget);
static void gtk_text_view_unrealize (GtkWidget *widget);
static void gtk_text_view_map (GtkWidget *widget);
static void gtk_text_view_css_changed (GtkWidget *widget,
GtkCssStyleChange *change);
static void gtk_text_view_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction);
static void gtk_text_view_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state);
static void gtk_text_view_click_gesture_pressed (GtkGestureClick *gesture,
int n_press,
double x,
double y,
GtkTextView *text_view);
static void gtk_text_view_drag_gesture_update (GtkGestureDrag *gesture,
double offset_x,
double offset_y,
GtkTextView *text_view);
static void gtk_text_view_drag_gesture_end (GtkGestureDrag *gesture,
double offset_x,
double offset_y,
GtkTextView *text_view);
static gboolean gtk_text_view_key_controller_key_pressed (GtkEventControllerKey *controller,
guint keyval,
guint keycode,
GdkModifierType state,
GtkTextView *text_view);
static void gtk_text_view_key_controller_im_update (GtkEventControllerKey *controller,
GtkTextView *text_view);
static void gtk_text_view_focus_in (GtkWidget *widget);
static void gtk_text_view_focus_out (GtkWidget *widget);
static void gtk_text_view_motion (GtkEventController *controller,
double x,
double y,
gpointer user_data);
static void gtk_text_view_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot);
static void gtk_text_view_select_all (GtkWidget *widget,
gboolean select);
static gboolean get_middle_click_paste (GtkTextView *text_view);
static GtkTextBuffer* gtk_text_view_create_buffer (GtkTextView *text_view);
/* Target side drag signals */
static void gtk_text_view_drag_leave (GtkDropTarget *dest,
GtkTextView *text_view);
static GdkDragAction
gtk_text_view_drag_motion (GtkDropTarget *dest,
double x,
double y,
GtkTextView *text_view);
static gboolean gtk_text_view_drag_drop (GtkDropTarget *dest,
const GValue *value,
double x,
double y,
GtkTextView *text_view);
static void gtk_text_view_popup_menu (GtkWidget *widget,
const char *action_name,
GVariant *parameters);
static void gtk_text_view_move_cursor (GtkTextView *text_view,
GtkMovementStep step,
int count,
gboolean extend_selection);
static void gtk_text_view_move_viewport (GtkTextView *text_view,
GtkScrollStep step,
int count);
static void gtk_text_view_set_anchor (GtkTextView *text_view);
static gboolean gtk_text_view_scroll_pages (GtkTextView *text_view,
int count,
gboolean extend_selection);
static gboolean gtk_text_view_scroll_hpages(GtkTextView *text_view,
int count,
gboolean extend_selection);
static void gtk_text_view_insert_at_cursor (GtkTextView *text_view,
const char *str);
static void gtk_text_view_delete_from_cursor (GtkTextView *text_view,
GtkDeleteType type,
int count);
static void gtk_text_view_backspace (GtkTextView *text_view);
static void gtk_text_view_cut_clipboard (GtkTextView *text_view);
static void gtk_text_view_copy_clipboard (GtkTextView *text_view);
static void gtk_text_view_paste_clipboard (GtkTextView *text_view);
static void gtk_text_view_toggle_overwrite (GtkTextView *text_view);
static void gtk_text_view_toggle_cursor_visible (GtkTextView *text_view);
static void gtk_text_view_unselect (GtkTextView *text_view);
static void gtk_text_view_validate_onscreen (GtkTextView *text_view);
static void gtk_text_view_get_first_para_iter (GtkTextView *text_view,
GtkTextIter *iter);
static void gtk_text_view_update_layout_width (GtkTextView *text_view);
static void gtk_text_view_set_attributes_from_style (GtkTextView *text_view,
GtkTextAttributes *values);
static void gtk_text_view_ensure_layout (GtkTextView *text_view);
static void gtk_text_view_destroy_layout (GtkTextView *text_view);
static void gtk_text_view_check_keymap_direction (GtkTextView *text_view);
static void gtk_text_view_start_selection_drag (GtkTextView *text_view,
const GtkTextIter *iter,
SelectionGranularity granularity,
gboolean extends);
static gboolean gtk_text_view_end_selection_drag (GtkTextView *text_view);
static void gtk_text_view_start_selection_dnd (GtkTextView *text_view,
const GtkTextIter *iter,
GdkEvent *event,
int x,
int y);
static void gtk_text_view_check_cursor_blink (GtkTextView *text_view);
static void gtk_text_view_pend_cursor_blink (GtkTextView *text_view);
static void gtk_text_view_stop_cursor_blink (GtkTextView *text_view);
static void gtk_text_view_reset_blink_time (GtkTextView *text_view);
static void gtk_text_view_value_changed (GtkAdjustment *adjustment,
GtkTextView *view);
static void gtk_text_view_commit_handler (GtkIMContext *context,
const char *str,
GtkTextView *text_view);
static void gtk_text_view_commit_text (GtkTextView *text_view,
const char *text);
static void gtk_text_view_preedit_changed_handler (GtkIMContext *context,
GtkTextView *text_view);
static gboolean gtk_text_view_retrieve_surrounding_handler (GtkIMContext *context,
GtkTextView *text_view);
static gboolean gtk_text_view_delete_surrounding_handler (GtkIMContext *context,
int offset,
int n_chars,
GtkTextView *text_view);
static void gtk_text_view_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data);
static void gtk_text_view_paste_done_handler (GtkTextBuffer *buffer,
GdkClipboard *clipboard,
gpointer data);
static void gtk_text_view_buffer_changed_handler (GtkTextBuffer *buffer,
gpointer data);
static void gtk_text_view_buffer_notify_redo (GtkTextBuffer *buffer,
GParamSpec *pspec,
GtkTextView *view);
static void gtk_text_view_buffer_notify_undo (GtkTextBuffer *buffer,
GParamSpec *pspec,
GtkTextView *view);
static void gtk_text_view_get_virtual_cursor_pos (GtkTextView *text_view,
GtkTextIter *cursor,
int *x,
int *y);
static void gtk_text_view_set_virtual_cursor_pos (GtkTextView *text_view,
int x,
int y);
static void gtk_text_view_do_popup (GtkTextView *text_view,
GdkEvent *event);
static void cancel_pending_scroll (GtkTextView *text_view);
static void gtk_text_view_queue_scroll (GtkTextView *text_view,
GtkTextMark *mark,
double within_margin,
gboolean use_align,
double xalign,
double yalign);
static gboolean gtk_text_view_flush_scroll (GtkTextView *text_view);
static void gtk_text_view_update_adjustments (GtkTextView *text_view);
static void gtk_text_view_invalidate (GtkTextView *text_view);
static void gtk_text_view_flush_first_validate (GtkTextView *text_view);
static void gtk_text_view_set_hadjustment (GtkTextView *text_view,
GtkAdjustment *adjustment);
static void gtk_text_view_set_vadjustment (GtkTextView *text_view,
GtkAdjustment *adjustment);
static void gtk_text_view_set_hadjustment_values (GtkTextView *text_view);
static void gtk_text_view_set_vadjustment_values (GtkTextView *text_view);
static void gtk_text_view_update_im_spot_location (GtkTextView *text_view);
static void gtk_text_view_insert_emoji (GtkTextView *text_view);
static void update_node_ordering (GtkWidget *widget);
/* GtkTextHandle handlers */
static void gtk_text_view_handle_drag_started (GtkTextHandle *handle,
GtkTextView *text_view);
static void gtk_text_view_handle_dragged (GtkTextHandle *handle,
int x,
int y,
GtkTextView *text_view);
static void gtk_text_view_handle_drag_finished (GtkTextHandle *handle,
GtkTextView *text_view);
static void gtk_text_view_update_handles (GtkTextView *text_view);
static void gtk_text_view_selection_bubble_popup_unset (GtkTextView *text_view);
static void gtk_text_view_selection_bubble_popup_set (GtkTextView *text_view);
static gboolean gtk_text_view_extend_selection (GtkTextView *text_view,
GtkTextExtendSelection granularity,
const GtkTextIter *location,
GtkTextIter *start,
GtkTextIter *end);
static void extend_selection (GtkTextView *text_view,
SelectionGranularity granularity,
const GtkTextIter *location,
GtkTextIter *start,
GtkTextIter *end);
static void gtk_text_view_update_clipboard_actions (GtkTextView *text_view);
static void gtk_text_view_update_emoji_action (GtkTextView *text_view);
static void gtk_text_view_activate_clipboard_cut (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_activate_clipboard_copy (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_activate_clipboard_paste (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_activate_selection_delete (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_activate_selection_select_all (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_activate_misc_insert_emoji (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_real_undo (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
static void gtk_text_view_real_redo (GtkWidget *widget,
const char *action_name,
GVariant *parameter);
/* FIXME probably need the focus methods. */
typedef struct
{
GList link;
GtkWidget *widget;
GtkTextChildAnchor *anchor;
int from_top_of_line;
int from_left_of_buffer;
} AnchoredChild;
static AnchoredChild *anchored_child_new (GtkWidget *child,
GtkTextChildAnchor *anchor,
GtkTextLayout *layout);
static void anchored_child_free (AnchoredChild *child);
struct _GtkTextWindow
{
GtkTextWindowType type;
GtkWidget *widget;
GtkCssNode *css_node;
GdkRectangle allocation;
};
static GtkTextWindow *text_window_new (GtkWidget *widget);
static void text_window_free (GtkTextWindow *win);
static void text_window_size_allocate (GtkTextWindow *win,
GdkRectangle *rect);
static int text_window_get_width (GtkTextWindow *win);
static int text_window_get_height (GtkTextWindow *win);
static guint signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkTextView, gtk_text_view, GTK_TYPE_WIDGET,
G_ADD_PRIVATE (GtkTextView)
G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
static GtkTextBuffer*
get_buffer (GtkTextView *text_view)
{
if (text_view->priv->buffer == NULL)
{
GtkTextBuffer *b;
b = GTK_TEXT_VIEW_GET_CLASS (text_view)->create_buffer (text_view);
gtk_text_view_set_buffer (text_view, b);
g_object_unref (b);
}
return text_view->priv->buffer;
}
#define UPPER_OFFSET_ANCHOR 0.8
#define LOWER_OFFSET_ANCHOR 0.2
static gboolean
check_scroll (double offset, GtkAdjustment *adjustment)
{
if ((offset > UPPER_OFFSET_ANCHOR &&
gtk_adjustment_get_value (adjustment) + gtk_adjustment_get_page_size (adjustment) < gtk_adjustment_get_upper (adjustment)) ||
(offset < LOWER_OFFSET_ANCHOR &&
gtk_adjustment_get_value (adjustment) > gtk_adjustment_get_lower (adjustment)))
return TRUE;
return FALSE;
}
static int
gtk_text_view_drop_motion_scroll_timeout (gpointer data)
{
GtkTextView *text_view;
GtkTextViewPrivate *priv;
GtkTextIter newplace;
double pointer_xoffset, pointer_yoffset;
text_view = GTK_TEXT_VIEW (data);
priv = text_view->priv;
gtk_text_layout_get_iter_at_pixel (priv->layout,
&newplace,
priv->dnd_x + priv->xoffset,
priv->dnd_y + priv->yoffset);
gtk_text_buffer_move_mark (get_buffer (text_view), priv->dnd_mark, &newplace);
pointer_xoffset = (double) priv->dnd_x / text_window_get_width (priv->text_window);
pointer_yoffset = (double) priv->dnd_y / text_window_get_height (priv->text_window);
if (check_scroll (pointer_xoffset, priv->hadjustment) ||
check_scroll (pointer_yoffset, priv->vadjustment))
{
/* do not make offsets surpass lower nor upper anchors, this makes
* scrolling speed relative to the distance of the pointer to the
* anchors when it moves beyond them.
*/
pointer_xoffset = CLAMP (pointer_xoffset, LOWER_OFFSET_ANCHOR, UPPER_OFFSET_ANCHOR);
pointer_yoffset = CLAMP (pointer_yoffset, LOWER_OFFSET_ANCHOR, UPPER_OFFSET_ANCHOR);
gtk_text_view_scroll_to_mark (text_view,
priv->dnd_mark,
0., TRUE, pointer_xoffset, pointer_yoffset);
}
return G_SOURCE_CONTINUE;
}
static void
gtk_text_view_drop_scroll_motion (GtkDropControllerMotion *motion,
double x,
double y,
GtkTextView *self)
{
GtkTextViewPrivate *priv = self->priv;
GdkRectangle target_rect;
target_rect = priv->text_window->allocation;
if (x < target_rect.x ||
y < target_rect.y ||
x > (target_rect.x + target_rect.width) ||
y > (target_rect.y + target_rect.height))
{
priv->dnd_x = priv->dnd_y = -1;
g_clear_handle_id (&priv->scroll_timeout, g_source_remove);
return;
}
/* DnD uses text window coords, so subtract extra widget
* coords that happen e.g. when displaying line numbers.
*/
priv->dnd_x = x - target_rect.x;
priv->dnd_y = y - target_rect.y;
if (!priv->scroll_timeout)
{
priv->scroll_timeout = g_timeout_add (100, gtk_text_view_drop_motion_scroll_timeout, self);
g_source_set_name_by_id (priv->scroll_timeout, "[gtk] gtk_text_view_drop_motion_scroll_timeout");
}
}
static void
gtk_text_view_drop_scroll_leave (GtkDropControllerMotion *motion,
GtkTextView *self)
{
GtkTextViewPrivate *priv = self->priv;
priv->dnd_x = priv->dnd_y = -1;
g_clear_handle_id (&priv->scroll_timeout, g_source_remove);
}
static void
add_move_binding (GtkWidgetClass *widget_class,
guint keyval,
guint modmask,
GtkMovementStep step,
int count)
{
g_assert ((modmask & GDK_SHIFT_MASK) == 0);
gtk_widget_class_add_binding_signal (widget_class,
keyval, modmask,
"move-cursor",
"(iib)", step, count, FALSE);
/* Selection-extending version */
gtk_widget_class_add_binding_signal (widget_class,
keyval, modmask | GDK_SHIFT_MASK,
"move-cursor",
"(iib)", step, count, TRUE);
}
static void
gtk_text_view_class_init (GtkTextViewClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
/* Default handlers and virtual methods
*/
gobject_class->set_property = gtk_text_view_set_property;
gobject_class->get_property = gtk_text_view_get_property;
gobject_class->finalize = gtk_text_view_finalize;
gobject_class->dispose = gtk_text_view_dispose;
widget_class->realize = gtk_text_view_realize;
widget_class->unrealize = gtk_text_view_unrealize;
widget_class->map = gtk_text_view_map;
widget_class->css_changed = gtk_text_view_css_changed;
widget_class->direction_changed = gtk_text_view_direction_changed;
widget_class->state_flags_changed = gtk_text_view_state_flags_changed;
widget_class->measure = gtk_text_view_measure;
widget_class->size_allocate = gtk_text_view_size_allocate;
widget_class->snapshot = gtk_text_view_snapshot;
klass->move_cursor = gtk_text_view_move_cursor;
klass->set_anchor = gtk_text_view_set_anchor;
klass->insert_at_cursor = gtk_text_view_insert_at_cursor;
klass->delete_from_cursor = gtk_text_view_delete_from_cursor;
klass->backspace = gtk_text_view_backspace;
klass->cut_clipboard = gtk_text_view_cut_clipboard;
klass->copy_clipboard = gtk_text_view_copy_clipboard;
klass->paste_clipboard = gtk_text_view_paste_clipboard;
klass->toggle_overwrite = gtk_text_view_toggle_overwrite;
klass->create_buffer = gtk_text_view_create_buffer;
klass->extend_selection = gtk_text_view_extend_selection;
klass->insert_emoji = gtk_text_view_insert_emoji;
/*
* Properties
*/
g_object_class_install_property (gobject_class,
PROP_PIXELS_ABOVE_LINES,
g_param_spec_int ("pixels-above-lines",
P_("Pixels Above Lines"),
P_("Pixels of blank space above paragraphs"),
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_PIXELS_BELOW_LINES,
g_param_spec_int ("pixels-below-lines",
P_("Pixels Below Lines"),
P_("Pixels of blank space below paragraphs"),
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_PIXELS_INSIDE_WRAP,
g_param_spec_int ("pixels-inside-wrap",
P_("Pixels Inside Wrap"),
P_("Pixels of blank space between wrapped lines in a paragraph"),
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_EDITABLE,
g_param_spec_boolean ("editable",
P_("Editable"),
P_("Whether the text can be modified by the user"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_WRAP_MODE,
g_param_spec_enum ("wrap-mode",
P_("Wrap Mode"),
P_("Whether to wrap lines never, at word boundaries, or at character boundaries"),
GTK_TYPE_WRAP_MODE,
GTK_WRAP_NONE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_JUSTIFICATION,
g_param_spec_enum ("justification",
P_("Justification"),
P_("Left, right, or center justification"),
GTK_TYPE_JUSTIFICATION,
GTK_JUSTIFY_LEFT,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:left-margin:
*
* The default left margin for text in the text view.
* Tags in the buffer may override the default.
*
* Note that this property is confusingly named. In CSS terms,
* the value set here is padding, and it is applied in addition
* to the padding from the theme.
*/
g_object_class_install_property (gobject_class,
PROP_LEFT_MARGIN,
g_param_spec_int ("left-margin",
P_("Left Margin"),
P_("Width of the left margin in pixels"),
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:right-margin:
*
* The default right margin for text in the text view.
* Tags in the buffer may override the default.
*
* Note that this property is confusingly named. In CSS terms,
* the value set here is padding, and it is applied in addition
* to the padding from the theme.
*/
g_object_class_install_property (gobject_class,
PROP_RIGHT_MARGIN,
g_param_spec_int ("right-margin",
P_("Right Margin"),
P_("Width of the right margin in pixels"),
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:top-margin:
*
* The top margin for text in the text view.
*
* Note that this property is confusingly named. In CSS terms,
* the value set here is padding, and it is applied in addition
* to the padding from the theme.
*
* Don't confuse this property with #GtkWidget:margin-top.
*/
g_object_class_install_property (gobject_class,
PROP_TOP_MARGIN,
g_param_spec_int ("top-margin",
P_("Top Margin"),
P_("Height of the top margin in pixels"),
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkTextView:bottom-margin:
*
* The bottom margin for text in the text view.
*
* Note that this property is confusingly named. In CSS terms,
* the value set here is padding, and it is applied in addition
* to the padding from the theme.
*
* Don't confuse this property with #GtkWidget:margin-bottom.
*/
g_object_class_install_property (gobject_class,
PROP_BOTTOM_MARGIN,
g_param_spec_int ("bottom-margin",
P_("Bottom Margin"),
P_("Height of the bottom margin in pixels"),
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_INDENT,
g_param_spec_int ("indent",
P_("Indent"),
P_("Amount to indent the paragraph, in pixels"),
G_MININT, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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_PARAM_EXPLICIT_NOTIFY));
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_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_ACCEPTS_TAB,
g_param_spec_boolean ("accepts-tab",
P_("Accepts tab"),