gtk2/gtk/gtktextview.h
Christian Hergert fea2a82ef6 textview: use GtkTextViewChild for border and overlay children
This creates a new GtkTextViewChild that can manage overlay children at
given x,y offsets in buffer coordinates. This simplifies GtkTextView by
extracting this from GtkTextWindow as well as providing a real widget for
the borders.

With this change, we also rename gtk_text_view_add_child_in_window() to
gtk_text_view_add_overlay(). For those that were using
GTK_TEXT_WINDOW_WIDGET, they can use a GtkOverlay. It does not appear
that anyone was using GTK_TEXT_WINDOW_(LEFT|RIGHT|TOP|BOTTOM) for widgets
in this fashion, but that can be done by setting a gutter widget with
gtk_text_view_set_gutter(). We can make GtkTextViewChild public if
necessary to simplify this should it become necessary.

GtkTextViewChild will setup a CSS node of either "text" or "border"
depending on the GtkTextWindowType.

The old GtkTextViewChild has been renamed to AnchoredChild as it is only
used for widgets with anchors in the GtkTextBuffer. This also removes the
use of allocated GSList and instead embeds a GQueue and GList to save a
few extraneous allocations.
2019-10-04 14:45:43 -07:00

432 lines
20 KiB
C

/* GTK - The GIMP Toolkit
* gtktextview.h 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/.
*/
#ifndef __GTK_TEXT_VIEW_H__
#define __GTK_TEXT_VIEW_H__
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#include <gtk/gtkcontainer.h>
#include <gtk/gtkimcontext.h>
#include <gtk/gtktextbuffer.h>
G_BEGIN_DECLS
#define GTK_TYPE_TEXT_VIEW (gtk_text_view_get_type ())
#define GTK_TEXT_VIEW(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TEXT_VIEW, GtkTextView))
#define GTK_TEXT_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT_VIEW, GtkTextViewClass))
#define GTK_IS_TEXT_VIEW(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TEXT_VIEW))
#define GTK_IS_TEXT_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT_VIEW))
#define GTK_TEXT_VIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TEXT_VIEW, GtkTextViewClass))
/**
* GtkTextWindowType:
* @GTK_TEXT_WINDOW_WIDGET: Window that floats over scrolling areas.
* @GTK_TEXT_WINDOW_TEXT: Scrollable text window.
* @GTK_TEXT_WINDOW_LEFT: Left side border window.
* @GTK_TEXT_WINDOW_RIGHT: Right side border window.
* @GTK_TEXT_WINDOW_TOP: Top border window.
* @GTK_TEXT_WINDOW_BOTTOM: Bottom border window.
*
* Used to reference the parts of #GtkTextView.
*/
typedef enum
{
GTK_TEXT_WINDOW_WIDGET = 1,
GTK_TEXT_WINDOW_TEXT,
GTK_TEXT_WINDOW_LEFT,
GTK_TEXT_WINDOW_RIGHT,
GTK_TEXT_WINDOW_TOP,
GTK_TEXT_WINDOW_BOTTOM
} GtkTextWindowType;
/**
* GtkTextViewLayer:
* @GTK_TEXT_VIEW_LAYER_BELOW_TEXT: The layer rendered below the text (but above the background).
* @GTK_TEXT_VIEW_LAYER_ABOVE_TEXT: The layer rendered above the text.
*
* Used to reference the layers of #GtkTextView for the purpose of customized
* drawing with the ::snapshot_layer vfunc.
*/
typedef enum
{
GTK_TEXT_VIEW_LAYER_BELOW_TEXT,
GTK_TEXT_VIEW_LAYER_ABOVE_TEXT
} GtkTextViewLayer;
/**
* GtkTextExtendSelection:
* @GTK_TEXT_EXTEND_SELECTION_WORD: Selects the current word. It is triggered by
* a double-click for example.
* @GTK_TEXT_EXTEND_SELECTION_LINE: Selects the current line. It is triggered by
* a triple-click for example.
*
* Granularity types that extend the text selection. Use the
* #GtkTextView::extend-selection signal to customize the selection.
*/
typedef enum
{
GTK_TEXT_EXTEND_SELECTION_WORD,
GTK_TEXT_EXTEND_SELECTION_LINE
} GtkTextExtendSelection;
/**
* GTK_TEXT_VIEW_PRIORITY_VALIDATE: (value 125)
*
* The priority at which the text view validates onscreen lines
* in an idle job in the background.
*/
#define GTK_TEXT_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
typedef struct _GtkTextView GtkTextView;
typedef struct _GtkTextViewPrivate GtkTextViewPrivate;
typedef struct _GtkTextViewClass GtkTextViewClass;
struct _GtkTextView
{
GtkContainer parent_instance;
/*< private >*/
GtkTextViewPrivate *priv;
};
/**
* GtkTextViewClass:
* @parent_class: The object class structure needs to be the first
* @move_cursor: The class handler for the #GtkTextView::move-cursor
* keybinding signal.
* @set_anchor: The class handler for the #GtkTextView::set-anchor
* keybinding signal.
* @insert_at_cursor: The class handler for the #GtkTextView::insert-at-cursor
* keybinding signal.
* @delete_from_cursor: The class handler for the #GtkTextView::delete-from-cursor
* keybinding signal.
* @backspace: The class handler for the #GtkTextView::backspace
* keybinding signal.
* @cut_clipboard: The class handler for the #GtkTextView::cut-clipboard
* keybinding signal
* @copy_clipboard: The class handler for the #GtkTextview::copy-clipboard
* keybinding signal.
* @paste_clipboard: The class handler for the #GtkTextView::paste-clipboard
* keybinding signal.
* @toggle_overwrite: The class handler for the #GtkTextView::toggle-overwrite
* keybinding signal.
* @create_buffer: The create_buffer vfunc is called to create a #GtkTextBuffer
* for the text view. The default implementation is to just call
* gtk_text_buffer_new().
* @snapshot_layer: The snapshot_layer vfunc is called before and after the text
* view is drawing its own text. Applications can override this vfunc
* in a subclass to draw customized content underneath or above the
* text. In the %GTK_TEXT_VIEW_LAYER_BELOW_TEXT and %GTK_TEXT_VIEW_LAYER_ABOVE_TEXT
* the drawing is done in the buffer coordinate space, but the older (deprecated)
* layers %GTK_TEXT_VIEW_LAYER_BELOW and %GTK_TEXT_VIEW_LAYER_ABOVE work in viewport
* coordinates, which makes them unnecessarily hard to use.
* @extend_selection: The class handler for the #GtkTextView::extend-selection signal.
* @insert_emoji: The class handler for the #GtkTextView::insert-emoji signal.
*/
struct _GtkTextViewClass
{
GtkContainerClass parent_class;
/*< public >*/
void (* move_cursor) (GtkTextView *text_view,
GtkMovementStep step,
gint count,
gboolean extend_selection);
void (* set_anchor) (GtkTextView *text_view);
void (* insert_at_cursor) (GtkTextView *text_view,
const gchar *str);
void (* delete_from_cursor) (GtkTextView *text_view,
GtkDeleteType type,
gint count);
void (* backspace) (GtkTextView *text_view);
void (* cut_clipboard) (GtkTextView *text_view);
void (* copy_clipboard) (GtkTextView *text_view);
void (* paste_clipboard) (GtkTextView *text_view);
void (* toggle_overwrite) (GtkTextView *text_view);
GtkTextBuffer * (* create_buffer) (GtkTextView *text_view);
void (* snapshot_layer) (GtkTextView *text_view,
GtkTextViewLayer layer,
GtkSnapshot *snapshot);
gboolean (* extend_selection) (GtkTextView *text_view,
GtkTextExtendSelection granularity,
const GtkTextIter *location,
GtkTextIter *start,
GtkTextIter *end);
void (* insert_emoji) (GtkTextView *text_view);
/*< private >*/
gpointer padding[8];
};
GDK_AVAILABLE_IN_ALL
GType gtk_text_view_get_type (void) G_GNUC_CONST;
GDK_AVAILABLE_IN_ALL
GtkWidget * gtk_text_view_new (void);
GDK_AVAILABLE_IN_ALL
GtkWidget * gtk_text_view_new_with_buffer (GtkTextBuffer *buffer);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_buffer (GtkTextView *text_view,
GtkTextBuffer *buffer);
GDK_AVAILABLE_IN_ALL
GtkTextBuffer *gtk_text_view_get_buffer (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_scroll_to_iter (GtkTextView *text_view,
GtkTextIter *iter,
gdouble within_margin,
gboolean use_align,
gdouble xalign,
gdouble yalign);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_scroll_to_mark (GtkTextView *text_view,
GtkTextMark *mark,
gdouble within_margin,
gboolean use_align,
gdouble xalign,
gdouble yalign);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_scroll_mark_onscreen (GtkTextView *text_view,
GtkTextMark *mark);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_move_mark_onscreen (GtkTextView *text_view,
GtkTextMark *mark);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_place_cursor_onscreen (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_get_visible_rect (GtkTextView *text_view,
GdkRectangle *visible_rect);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_cursor_visible (GtkTextView *text_view,
gboolean setting);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_get_cursor_visible (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_reset_cursor_blink (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_get_cursor_locations (GtkTextView *text_view,
const GtkTextIter *iter,
GdkRectangle *strong,
GdkRectangle *weak);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_get_iter_location (GtkTextView *text_view,
const GtkTextIter *iter,
GdkRectangle *location);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_get_iter_at_location (GtkTextView *text_view,
GtkTextIter *iter,
gint x,
gint y);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_get_iter_at_position (GtkTextView *text_view,
GtkTextIter *iter,
gint *trailing,
gint x,
gint y);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_get_line_yrange (GtkTextView *text_view,
const GtkTextIter *iter,
gint *y,
gint *height);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_get_line_at_y (GtkTextView *text_view,
GtkTextIter *target_iter,
gint y,
gint *line_top);
GDK_AVAILABLE_IN_ALL
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);
GDK_AVAILABLE_IN_ALL
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);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_forward_display_line (GtkTextView *text_view,
GtkTextIter *iter);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_backward_display_line (GtkTextView *text_view,
GtkTextIter *iter);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_forward_display_line_end (GtkTextView *text_view,
GtkTextIter *iter);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_backward_display_line_start (GtkTextView *text_view,
GtkTextIter *iter);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_starts_display_line (GtkTextView *text_view,
const GtkTextIter *iter);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_move_visually (GtkTextView *text_view,
GtkTextIter *iter,
gint count);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_im_context_filter_keypress (GtkTextView *text_view,
GdkEventKey *event);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_reset_im_context (GtkTextView *text_view);
/* Adding child widgets */
GDK_AVAILABLE_IN_ALL
GtkWidget *gtk_text_view_get_gutter (GtkTextView *text_view,
GtkTextWindowType win);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_gutter (GtkTextView *text_view,
GtkTextWindowType win,
GtkWidget *widget);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_add_child_at_anchor (GtkTextView *text_view,
GtkWidget *child,
GtkTextChildAnchor *anchor);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_add_overlay (GtkTextView *text_view,
GtkWidget *child,
gint xpos,
gint ypos);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_move_overlay (GtkTextView *text_view,
GtkWidget *child,
gint xpos,
gint ypos);
/* Default style settings (fallbacks if no tag affects the property) */
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_wrap_mode (GtkTextView *text_view,
GtkWrapMode wrap_mode);
GDK_AVAILABLE_IN_ALL
GtkWrapMode gtk_text_view_get_wrap_mode (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_editable (GtkTextView *text_view,
gboolean setting);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_get_editable (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_overwrite (GtkTextView *text_view,
gboolean overwrite);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_get_overwrite (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_accepts_tab (GtkTextView *text_view,
gboolean accepts_tab);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_get_accepts_tab (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_pixels_above_lines (GtkTextView *text_view,
gint pixels_above_lines);
GDK_AVAILABLE_IN_ALL
gint gtk_text_view_get_pixels_above_lines (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_pixels_below_lines (GtkTextView *text_view,
gint pixels_below_lines);
GDK_AVAILABLE_IN_ALL
gint gtk_text_view_get_pixels_below_lines (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_pixels_inside_wrap (GtkTextView *text_view,
gint pixels_inside_wrap);
GDK_AVAILABLE_IN_ALL
gint gtk_text_view_get_pixels_inside_wrap (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_justification (GtkTextView *text_view,
GtkJustification justification);
GDK_AVAILABLE_IN_ALL
GtkJustification gtk_text_view_get_justification (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_left_margin (GtkTextView *text_view,
gint left_margin);
GDK_AVAILABLE_IN_ALL
gint gtk_text_view_get_left_margin (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_right_margin (GtkTextView *text_view,
gint right_margin);
GDK_AVAILABLE_IN_ALL
gint gtk_text_view_get_right_margin (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_top_margin (GtkTextView *text_view,
gint top_margin);
GDK_AVAILABLE_IN_ALL
gint gtk_text_view_get_top_margin (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_bottom_margin (GtkTextView *text_view,
gint bottom_margin);
GDK_AVAILABLE_IN_ALL
gint gtk_text_view_get_bottom_margin (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_indent (GtkTextView *text_view,
gint indent);
GDK_AVAILABLE_IN_ALL
gint gtk_text_view_get_indent (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_tabs (GtkTextView *text_view,
PangoTabArray *tabs);
GDK_AVAILABLE_IN_ALL
PangoTabArray* gtk_text_view_get_tabs (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_input_purpose (GtkTextView *text_view,
GtkInputPurpose purpose);
GDK_AVAILABLE_IN_ALL
GtkInputPurpose gtk_text_view_get_input_purpose (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_input_hints (GtkTextView *text_view,
GtkInputHints hints);
GDK_AVAILABLE_IN_ALL
GtkInputHints gtk_text_view_get_input_hints (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_monospace (GtkTextView *text_view,
gboolean monospace);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_get_monospace (GtkTextView *text_view);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_extra_menu (GtkTextView *text_view,
GMenuModel *model);
GDK_AVAILABLE_IN_ALL
GMenuModel * gtk_text_view_get_extra_menu (GtkTextView *text_view);
G_END_DECLS
#endif /* __GTK_TEXT_VIEW_H__ */