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https://gitlab.gnome.org/GNOME/gtk.git
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e836166664
Add a new function callback called GtkTetBufferCommitNotify to be notified of changes to a GtkTextBuffer without being involved in a signal chain. This is necessary for some situations because signal handlers may modify the parameters as they proceed down to default handler. As such, the signal is unsuitable for applications heavily utilizing plug-ins such as Builder due to non-deterministic signal connection ordering. This technique has been used in Builder for the better part of a decade and now would also vastly help in situations like libspelling where you also want to know about changes to the buffer right before they are committed to the b-tree. Fixes: #6133
525 lines
25 KiB
C
525 lines
25 KiB
C
/* GTK - The GIMP Toolkit
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* gtktextbuffer.h Copyright (C) 2000 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#pragma once
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#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk.h> can be included directly."
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#endif
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#include <gtk/gtkwidget.h>
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#include <gtk/gtktexttagtable.h>
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#include <gtk/gtktextiter.h>
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#include <gtk/gtktextmark.h>
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#include <gtk/gtktextchild.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_TEXT_BUFFER (gtk_text_buffer_get_type ())
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#define GTK_TEXT_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TEXT_BUFFER, GtkTextBuffer))
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#define GTK_TEXT_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT_BUFFER, GtkTextBufferClass))
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#define GTK_IS_TEXT_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TEXT_BUFFER))
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#define GTK_IS_TEXT_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT_BUFFER))
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#define GTK_TEXT_BUFFER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TEXT_BUFFER, GtkTextBufferClass))
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typedef struct _GtkTextBufferPrivate GtkTextBufferPrivate;
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typedef struct _GtkTextBufferClass GtkTextBufferClass;
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struct _GtkTextBuffer
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{
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GObject parent_instance;
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GtkTextBufferPrivate *priv;
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};
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/**
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* GtkTextBufferCommitNotify:
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* @buffer: the text buffer being notified
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* @flags: the type of commit notification
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* @position: the position of the text operation
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* @length: the length of the text operation in characters
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* @user_data: (closure): user data passed to the callback
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*
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* A notification callback used by [method@Gtk.TextBuffer.add_commit_notify].
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*
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* You may not modify the [class@Gtk.TextBuffer] from a
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* [callback@Gtk.TextBufferCommitNotify] callback and that is enforced
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* by the [class@Gtk.TextBuffer] API.
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*
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* [callback@Gtk.TextBufferCommitNotify] may be used to be notified about
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* changes to the underlying buffer right before-or-after the changes are
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* committed to the underlying B-Tree. This is useful if you want to observe
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* changes to the buffer without other signal handlers potentially modifying
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* state on the way to the default signal handler.
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*
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* When @flags is `GTK_TEXT_BUFFER_NOTIFY_BEFORE_INSERT`, `position` is set to
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* the offset in characters from the start of the buffer where the insertion
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* will occur. `length` is set to the number of characters to be inserted. You
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* may not yet retrieve the text until it has been inserted. You may access the
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* text from `GTK_TEXT_BUFFER_NOTIFY_AFTER_INSERT` using
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* [method@Gtk.TextBuffer.get_slice].
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*
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* When @flags is `GTK_TEXT_BUFFER_NOTIFY_AFTER_INSERT`, `position` is set to
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* offset in characters where the insertion occurred and `length` is set
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* to the number of characters inserted.
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*
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* When @flags is `GTK_TEXT_BUFFER_NOTIFY_BEFORE_DELETE`, `position` is set to
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* offset in characters where the deletion will occur and `length` is set
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* to the number of characters that will be removed. You may still retrieve
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* the text from this handler using `position` and `length`.
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*
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* When @flags is `GTK_TEXT_BUFFER_NOTIFY_AFTER_DELETE`, `length` is set to
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* zero to denote that the delete-range has already been committed to the
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* underlying B-Tree. You may no longer retrieve the text that has been
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* deleted from the [class@Gtk.TextBuffer].
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*
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* Since: 4.16
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*/
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typedef void (*GtkTextBufferCommitNotify) (GtkTextBuffer *buffer,
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GtkTextBufferNotifyFlags flags,
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guint position,
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guint length,
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gpointer user_data);
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/**
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* GtkTextBufferClass:
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* @parent_class: The object class structure needs to be the first.
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* @insert_text: The class handler for the `GtkTextBuffer::insert-text` signal.
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* @insert_paintable: The class handler for the `GtkTextBuffer::insert-paintable` signal.
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* @insert_child_anchor: The class handler for the `GtkTextBuffer::insert-child-anchor` signal.
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* @delete_range: The class handler for the `GtkTextBuffer::delete-range` signal.
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* @changed: The class handler for the `GtkTextBuffer::changed` signal.
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* @modified_changed: The class handler for the `GtkTextBuffer::modified-changed` signal.
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* @mark_set: The class handler for the `GtkTextBuffer::mark-set` signal.
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* @mark_deleted: The class handler for the `GtkTextBuffer::mark-deleted` signal.
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* @apply_tag: The class handler for the `GtkTextBuffer::apply-tag` signal.
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* @remove_tag: The class handler for the `GtkTextBuffer::remove-tag` signal.
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* @begin_user_action: The class handler for the `GtkTextBuffer::begin-user-action` signal.
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* @end_user_action: The class handler for the `GtkTextBuffer::end-user-action` signal.
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* @paste_done: The class handler for the `GtkTextBuffer::paste-done` signal.
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* @undo: The class handler for the `GtkTextBuffer::undo` signal
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* @redo: The class handler for the `GtkTextBuffer::redo` signal
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*
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* The class structure for `GtkTextBuffer`.
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*/
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struct _GtkTextBufferClass
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{
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GObjectClass parent_class;
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void (* insert_text) (GtkTextBuffer *buffer,
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GtkTextIter *pos,
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const char *new_text,
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int new_text_length);
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void (* insert_paintable) (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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GdkPaintable *paintable);
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void (* insert_child_anchor) (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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GtkTextChildAnchor *anchor);
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void (* delete_range) (GtkTextBuffer *buffer,
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GtkTextIter *start,
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GtkTextIter *end);
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void (* changed) (GtkTextBuffer *buffer);
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void (* modified_changed) (GtkTextBuffer *buffer);
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void (* mark_set) (GtkTextBuffer *buffer,
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const GtkTextIter *location,
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GtkTextMark *mark);
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void (* mark_deleted) (GtkTextBuffer *buffer,
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GtkTextMark *mark);
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void (* apply_tag) (GtkTextBuffer *buffer,
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GtkTextTag *tag,
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const GtkTextIter *start,
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const GtkTextIter *end);
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void (* remove_tag) (GtkTextBuffer *buffer,
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GtkTextTag *tag,
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const GtkTextIter *start,
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const GtkTextIter *end);
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void (* begin_user_action) (GtkTextBuffer *buffer);
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void (* end_user_action) (GtkTextBuffer *buffer);
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void (* paste_done) (GtkTextBuffer *buffer,
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GdkClipboard *clipboard);
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void (* undo) (GtkTextBuffer *buffer);
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void (* redo) (GtkTextBuffer *buffer);
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/*< private >*/
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/* Padding for future expansion */
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void (*_gtk_reserved1) (void);
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void (*_gtk_reserved2) (void);
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void (*_gtk_reserved3) (void);
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void (*_gtk_reserved4) (void);
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};
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GDK_AVAILABLE_IN_ALL
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GType gtk_text_buffer_get_type (void) G_GNUC_CONST;
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/* table is NULL to create a new one */
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GDK_AVAILABLE_IN_ALL
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GtkTextBuffer *gtk_text_buffer_new (GtkTextTagTable *table);
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GDK_AVAILABLE_IN_ALL
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int gtk_text_buffer_get_line_count (GtkTextBuffer *buffer);
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GDK_AVAILABLE_IN_ALL
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int gtk_text_buffer_get_char_count (GtkTextBuffer *buffer);
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GDK_AVAILABLE_IN_ALL
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GtkTextTagTable* gtk_text_buffer_get_tag_table (GtkTextBuffer *buffer);
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/* Delete whole buffer, then insert */
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_set_text (GtkTextBuffer *buffer,
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const char *text,
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int len);
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/* Insert into the buffer */
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_insert (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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const char *text,
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int len);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_insert_at_cursor (GtkTextBuffer *buffer,
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const char *text,
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int len);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_text_buffer_insert_interactive (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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const char *text,
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int len,
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gboolean default_editable);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_text_buffer_insert_interactive_at_cursor (GtkTextBuffer *buffer,
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const char *text,
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int len,
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gboolean default_editable);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_insert_range (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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const GtkTextIter *start,
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const GtkTextIter *end);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_text_buffer_insert_range_interactive (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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const GtkTextIter *start,
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const GtkTextIter *end,
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gboolean default_editable);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_insert_with_tags (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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const char *text,
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int len,
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GtkTextTag *first_tag,
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...) G_GNUC_NULL_TERMINATED;
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_insert_with_tags_by_name (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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const char *text,
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int len,
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const char *first_tag_name,
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...) G_GNUC_NULL_TERMINATED;
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_insert_markup (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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const char *markup,
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int len);
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/* Delete from the buffer */
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_delete (GtkTextBuffer *buffer,
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GtkTextIter *start,
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GtkTextIter *end);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_text_buffer_delete_interactive (GtkTextBuffer *buffer,
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GtkTextIter *start_iter,
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GtkTextIter *end_iter,
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gboolean default_editable);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_text_buffer_backspace (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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gboolean interactive,
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gboolean default_editable);
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/* Obtain strings from the buffer */
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GDK_AVAILABLE_IN_ALL
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char *gtk_text_buffer_get_text (GtkTextBuffer *buffer,
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const GtkTextIter *start,
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const GtkTextIter *end,
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gboolean include_hidden_chars);
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GDK_AVAILABLE_IN_ALL
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char *gtk_text_buffer_get_slice (GtkTextBuffer *buffer,
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const GtkTextIter *start,
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const GtkTextIter *end,
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gboolean include_hidden_chars);
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/* Insert a paintable */
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_insert_paintable (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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GdkPaintable *paintable);
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/* Insert a child anchor */
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_insert_child_anchor (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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GtkTextChildAnchor *anchor);
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/* Convenience, create and insert a child anchor */
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GDK_AVAILABLE_IN_ALL
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GtkTextChildAnchor *gtk_text_buffer_create_child_anchor (GtkTextBuffer *buffer,
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GtkTextIter *iter);
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/* Mark manipulation */
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_add_mark (GtkTextBuffer *buffer,
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GtkTextMark *mark,
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const GtkTextIter *where);
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GDK_AVAILABLE_IN_ALL
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GtkTextMark *gtk_text_buffer_create_mark (GtkTextBuffer *buffer,
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const char *mark_name,
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const GtkTextIter *where,
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gboolean left_gravity);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_move_mark (GtkTextBuffer *buffer,
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GtkTextMark *mark,
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const GtkTextIter *where);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_delete_mark (GtkTextBuffer *buffer,
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GtkTextMark *mark);
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GDK_AVAILABLE_IN_ALL
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GtkTextMark* gtk_text_buffer_get_mark (GtkTextBuffer *buffer,
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const char *name);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_move_mark_by_name (GtkTextBuffer *buffer,
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const char *name,
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const GtkTextIter *where);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_delete_mark_by_name (GtkTextBuffer *buffer,
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const char *name);
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GDK_AVAILABLE_IN_ALL
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GtkTextMark* gtk_text_buffer_get_insert (GtkTextBuffer *buffer);
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GDK_AVAILABLE_IN_ALL
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GtkTextMark* gtk_text_buffer_get_selection_bound (GtkTextBuffer *buffer);
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/* efficiently move insert and selection_bound at the same time */
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_place_cursor (GtkTextBuffer *buffer,
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const GtkTextIter *where);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_select_range (GtkTextBuffer *buffer,
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const GtkTextIter *ins,
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const GtkTextIter *bound);
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/* Tag manipulation */
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_apply_tag (GtkTextBuffer *buffer,
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GtkTextTag *tag,
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const GtkTextIter *start,
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const GtkTextIter *end);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_remove_tag (GtkTextBuffer *buffer,
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GtkTextTag *tag,
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const GtkTextIter *start,
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const GtkTextIter *end);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_apply_tag_by_name (GtkTextBuffer *buffer,
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const char *name,
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const GtkTextIter *start,
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const GtkTextIter *end);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_remove_tag_by_name (GtkTextBuffer *buffer,
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const char *name,
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const GtkTextIter *start,
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const GtkTextIter *end);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_remove_all_tags (GtkTextBuffer *buffer,
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const GtkTextIter *start,
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const GtkTextIter *end);
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/* You can either ignore the return value, or use it to
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* set the attributes of the tag. tag_name can be NULL
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*/
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GDK_AVAILABLE_IN_ALL
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GtkTextTag *gtk_text_buffer_create_tag (GtkTextBuffer *buffer,
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const char *tag_name,
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const char *first_property_name,
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...);
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/* Obtain iterators pointed at various places, then you can move the
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* iterator around using the GtkTextIter operators
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*/
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_text_buffer_get_iter_at_line_offset (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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int line_number,
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int char_offset);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_text_buffer_get_iter_at_line_index (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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int line_number,
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int byte_index);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_get_iter_at_offset (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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int char_offset);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_text_buffer_get_iter_at_line (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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int line_number);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_get_start_iter (GtkTextBuffer *buffer,
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GtkTextIter *iter);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_get_end_iter (GtkTextBuffer *buffer,
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GtkTextIter *iter);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_get_bounds (GtkTextBuffer *buffer,
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GtkTextIter *start,
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GtkTextIter *end);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_get_iter_at_mark (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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GtkTextMark *mark);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_get_iter_at_child_anchor (GtkTextBuffer *buffer,
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GtkTextIter *iter,
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GtkTextChildAnchor *anchor);
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/* There's no get_first_iter because you just get the iter for
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line or char 0 */
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/* Used to keep track of whether the buffer needs saving; anytime the
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buffer contents change, the modified flag is turned on. Whenever
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you save, turn it off. Tags and marks do not affect the modified
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flag, but if you would like them to you can connect a handler to
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the tag/mark signals and call set_modified in your handler */
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_text_buffer_get_modified (GtkTextBuffer *buffer);
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GDK_AVAILABLE_IN_ALL
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void gtk_text_buffer_set_modified (GtkTextBuffer *buffer,
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gboolean setting);
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
gboolean gtk_text_buffer_get_has_selection (GtkTextBuffer *buffer);
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_add_selection_clipboard (GtkTextBuffer *buffer,
|
|
GdkClipboard *clipboard);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_remove_selection_clipboard (GtkTextBuffer *buffer,
|
|
GdkClipboard *clipboard);
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_cut_clipboard (GtkTextBuffer *buffer,
|
|
GdkClipboard *clipboard,
|
|
gboolean default_editable);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_copy_clipboard (GtkTextBuffer *buffer,
|
|
GdkClipboard *clipboard);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_paste_clipboard (GtkTextBuffer *buffer,
|
|
GdkClipboard *clipboard,
|
|
GtkTextIter *override_location,
|
|
gboolean default_editable);
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
gboolean gtk_text_buffer_get_selection_bounds (GtkTextBuffer *buffer,
|
|
GtkTextIter *start,
|
|
GtkTextIter *end);
|
|
GDK_AVAILABLE_IN_ALL
|
|
gboolean gtk_text_buffer_delete_selection (GtkTextBuffer *buffer,
|
|
gboolean interactive,
|
|
gboolean default_editable);
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
GdkContentProvider *
|
|
gtk_text_buffer_get_selection_content (GtkTextBuffer *buffer);
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
gboolean gtk_text_buffer_get_can_undo (GtkTextBuffer *buffer);
|
|
GDK_AVAILABLE_IN_ALL
|
|
gboolean gtk_text_buffer_get_can_redo (GtkTextBuffer *buffer);
|
|
GDK_AVAILABLE_IN_ALL
|
|
gboolean gtk_text_buffer_get_enable_undo (GtkTextBuffer *buffer);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_set_enable_undo (GtkTextBuffer *buffer,
|
|
gboolean enable_undo);
|
|
GDK_AVAILABLE_IN_ALL
|
|
guint gtk_text_buffer_get_max_undo_levels (GtkTextBuffer *buffer);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_set_max_undo_levels (GtkTextBuffer *buffer,
|
|
guint max_undo_levels);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_undo (GtkTextBuffer *buffer);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_redo (GtkTextBuffer *buffer);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_begin_irreversible_action (GtkTextBuffer *buffer);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_end_irreversible_action (GtkTextBuffer *buffer);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_begin_user_action (GtkTextBuffer *buffer);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gtk_text_buffer_end_user_action (GtkTextBuffer *buffer);
|
|
GDK_AVAILABLE_IN_4_16
|
|
guint gtk_text_buffer_add_commit_notify (GtkTextBuffer *buffer,
|
|
GtkTextBufferNotifyFlags flags,
|
|
GtkTextBufferCommitNotify commit_notify,
|
|
gpointer user_data,
|
|
GDestroyNotify destroy);
|
|
GDK_AVAILABLE_IN_4_16
|
|
void gtk_text_buffer_remove_commit_notify (GtkTextBuffer *buffer,
|
|
guint commit_notify_handler);
|
|
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GtkTextBuffer, g_object_unref)
|
|
|
|
G_END_DECLS
|
|
|