1 /* GTK - The GIMP Toolkit
2 * gtktextbuffer.c Copyright (C) 2000 Red Hat, Inc.
3 * Copyright (C) 2004 Nokia Corporation
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
22 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
23 * file for a list of people on the GTK+ Team. See the ChangeLog
24 * files for a list of changes. These files are distributed with
25 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
32 #define GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API
33 #include "gtkclipboard.h"
35 #include "gtkinvisible.h"
36 #include "gtkmarshalers.h"
37 #include "gtktextbuffer.h"
38 #include "gtktextbufferrichtext.h"
39 #include "gtktextbtree.h"
40 #include "gtktextiterprivate.h"
41 #include "gtktexttagprivate.h"
42 #include "gtkprivate.h"
46 typedef struct _GtkTextLogAttrCache GtkTextLogAttrCache;
48 struct _GtkTextBufferPrivate
50 GtkTargetList *copy_target_list;
51 GtkTargetEntry *copy_target_entries;
52 GtkTargetList *paste_target_list;
53 GtkTargetEntry *paste_target_entries;
55 gint n_copy_target_entries;
56 gint n_paste_target_entries;
58 GtkTextTagTable *tag_table;
61 GSList *clipboard_contents_buffers;
62 GSList *selection_clipboards;
64 GtkTextLogAttrCache *log_attr_cache;
66 guint user_action_count;
68 /* Whether the buffer has been modified since last save */
70 guint has_selection : 1;
74 typedef struct _ClipboardRequest ClipboardRequest;
76 struct _ClipboardRequest
78 GtkTextBuffer *buffer;
79 guint interactive : 1;
80 guint default_editable : 1;
81 guint replace_selection : 1;
110 PROP_CURSOR_POSITION,
111 PROP_COPY_TARGET_LIST,
112 PROP_PASTE_TARGET_LIST
115 static void gtk_text_buffer_finalize (GObject *object);
117 static void gtk_text_buffer_real_insert_text (GtkTextBuffer *buffer,
121 static void gtk_text_buffer_real_insert_pixbuf (GtkTextBuffer *buffer,
124 static void gtk_text_buffer_real_insert_anchor (GtkTextBuffer *buffer,
126 GtkTextChildAnchor *anchor);
127 static void gtk_text_buffer_real_delete_range (GtkTextBuffer *buffer,
130 static void gtk_text_buffer_real_apply_tag (GtkTextBuffer *buffer,
132 const GtkTextIter *start_char,
133 const GtkTextIter *end_char);
134 static void gtk_text_buffer_real_remove_tag (GtkTextBuffer *buffer,
136 const GtkTextIter *start_char,
137 const GtkTextIter *end_char);
138 static void gtk_text_buffer_real_changed (GtkTextBuffer *buffer);
139 static void gtk_text_buffer_real_mark_set (GtkTextBuffer *buffer,
140 const GtkTextIter *iter,
143 static GtkTextBTree* get_btree (GtkTextBuffer *buffer);
144 static void free_log_attr_cache (GtkTextLogAttrCache *cache);
146 static void remove_all_selection_clipboards (GtkTextBuffer *buffer);
147 static void update_selection_clipboards (GtkTextBuffer *buffer);
149 static GtkTextBuffer *create_clipboard_contents_buffer (GtkTextBuffer *buffer);
151 static void gtk_text_buffer_free_target_lists (GtkTextBuffer *buffer);
153 static guint signals[LAST_SIGNAL] = { 0 };
155 static void gtk_text_buffer_set_property (GObject *object,
159 static void gtk_text_buffer_get_property (GObject *object,
163 static void gtk_text_buffer_notify (GObject *object,
166 G_DEFINE_TYPE (GtkTextBuffer, gtk_text_buffer, G_TYPE_OBJECT)
169 gtk_text_buffer_class_init (GtkTextBufferClass *klass)
171 GObjectClass *object_class = G_OBJECT_CLASS (klass);
173 object_class->finalize = gtk_text_buffer_finalize;
174 object_class->set_property = gtk_text_buffer_set_property;
175 object_class->get_property = gtk_text_buffer_get_property;
176 object_class->notify = gtk_text_buffer_notify;
178 klass->insert_text = gtk_text_buffer_real_insert_text;
179 klass->insert_pixbuf = gtk_text_buffer_real_insert_pixbuf;
180 klass->insert_child_anchor = gtk_text_buffer_real_insert_anchor;
181 klass->delete_range = gtk_text_buffer_real_delete_range;
182 klass->apply_tag = gtk_text_buffer_real_apply_tag;
183 klass->remove_tag = gtk_text_buffer_real_remove_tag;
184 klass->changed = gtk_text_buffer_real_changed;
185 klass->mark_set = gtk_text_buffer_real_mark_set;
188 g_object_class_install_property (object_class,
190 g_param_spec_object ("tag-table",
192 P_("Text Tag Table"),
193 GTK_TYPE_TEXT_TAG_TABLE,
194 GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
196 /* Normal properties*/
199 * GtkTextBuffer:text:
201 * The text content of the buffer. Without child widgets and images,
202 * see gtk_text_buffer_get_text() for more information.
206 g_object_class_install_property (object_class,
208 g_param_spec_string ("text",
210 P_("Current text of the buffer"),
212 GTK_PARAM_READWRITE));
215 * GtkTextBuffer:has-selection:
217 * Whether the buffer has some text currently selected.
221 g_object_class_install_property (object_class,
223 g_param_spec_boolean ("has-selection",
225 P_("Whether the buffer has some text currently selected"),
227 GTK_PARAM_READABLE));
230 * GtkTextBuffer:cursor-position:
232 * The position of the insert mark (as offset from the beginning
233 * of the buffer). It is useful for getting notified when the
238 g_object_class_install_property (object_class,
239 PROP_CURSOR_POSITION,
240 g_param_spec_int ("cursor-position",
241 P_("Cursor position"),
242 P_("The position of the insert mark (as offset from the beginning of the buffer)"),
244 GTK_PARAM_READABLE));
247 * GtkTextBuffer:copy-target-list:
249 * The list of targets this buffer supports for clipboard copying
254 g_object_class_install_property (object_class,
255 PROP_COPY_TARGET_LIST,
256 g_param_spec_boxed ("copy-target-list",
257 P_("Copy target list"),
258 P_("The list of targets this buffer supports for clipboard copying and DND source"),
259 GTK_TYPE_TARGET_LIST,
260 GTK_PARAM_READABLE));
263 * GtkTextBuffer:paste-target-list:
265 * The list of targets this buffer supports for clipboard pasting
266 * and as DND destination.
270 g_object_class_install_property (object_class,
271 PROP_PASTE_TARGET_LIST,
272 g_param_spec_boxed ("paste-target-list",
273 P_("Paste target list"),
274 P_("The list of targets this buffer supports for clipboard pasting and DND destination"),
275 GTK_TYPE_TARGET_LIST,
276 GTK_PARAM_READABLE));
279 * GtkTextBuffer::insert-text:
280 * @textbuffer: the object which received the signal
281 * @location: position to insert @text in @textbuffer
282 * @text: the UTF-8 text to be inserted
283 * @len: length of the inserted text in bytes
285 * The ::insert-text signal is emitted to insert text in a #GtkTextBuffer.
286 * Insertion actually occurs in the default handler.
288 * Note that if your handler runs before the default handler it must not
289 * invalidate the @location iter (or has to revalidate it).
290 * The default signal handler revalidates it to point to the end of the
294 * gtk_text_buffer_insert(),
295 * gtk_text_buffer_insert_range().
297 signals[INSERT_TEXT] =
298 g_signal_new (I_("insert-text"),
299 G_OBJECT_CLASS_TYPE (object_class),
301 G_STRUCT_OFFSET (GtkTextBufferClass, insert_text),
303 _gtk_marshal_VOID__BOXED_STRING_INT,
306 GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
307 G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE,
311 * GtkTextBuffer::insert-pixbuf:
312 * @textbuffer: the object which received the signal
313 * @location: position to insert @pixbuf in @textbuffer
314 * @pixbuf: the #GdkPixbuf to be inserted
316 * The ::insert-pixbuf signal is emitted to insert a #GdkPixbuf
317 * in a #GtkTextBuffer. Insertion actually occurs in the default handler.
319 * Note that if your handler runs before the default handler it must not
320 * invalidate the @location iter (or has to revalidate it).
321 * The default signal handler revalidates it to be placed after the
324 * See also: gtk_text_buffer_insert_pixbuf().
326 signals[INSERT_PIXBUF] =
327 g_signal_new (I_("insert-pixbuf"),
328 G_OBJECT_CLASS_TYPE (object_class),
330 G_STRUCT_OFFSET (GtkTextBufferClass, insert_pixbuf),
332 _gtk_marshal_VOID__BOXED_OBJECT,
335 GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
340 * GtkTextBuffer::insert-child-anchor:
341 * @textbuffer: the object which received the signal
342 * @location: position to insert @anchor in @textbuffer
343 * @anchor: the #GtkTextChildAnchor to be inserted
345 * The ::insert-child-anchor signal is emitted to insert a
346 * #GtkTextChildAnchor in a #GtkTextBuffer.
347 * Insertion actually occurs in the default handler.
349 * Note that if your handler runs before the default handler it must
350 * not invalidate the @location iter (or has to revalidate it).
351 * The default signal handler revalidates it to be placed after the
354 * See also: gtk_text_buffer_insert_child_anchor().
356 signals[INSERT_CHILD_ANCHOR] =
357 g_signal_new (I_("insert-child-anchor"),
358 G_OBJECT_CLASS_TYPE (object_class),
360 G_STRUCT_OFFSET (GtkTextBufferClass, insert_child_anchor),
362 _gtk_marshal_VOID__BOXED_OBJECT,
365 GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
366 GTK_TYPE_TEXT_CHILD_ANCHOR);
369 * GtkTextBuffer::delete-range:
370 * @textbuffer: the object which received the signal
371 * @start: the start of the range to be deleted
372 * @end: the end of the range to be deleted
374 * The ::delete-range signal is emitted to delete a range
375 * from a #GtkTextBuffer.
377 * Note that if your handler runs before the default handler it must not
378 * invalidate the @start and @end iters (or has to revalidate them).
379 * The default signal handler revalidates the @start and @end iters to
380 * both point point to the location where text was deleted. Handlers
381 * which run after the default handler (see g_signal_connect_after())
382 * do not have access to the deleted text.
384 * See also: gtk_text_buffer_delete().
386 signals[DELETE_RANGE] =
387 g_signal_new (I_("delete-range"),
388 G_OBJECT_CLASS_TYPE (object_class),
390 G_STRUCT_OFFSET (GtkTextBufferClass, delete_range),
392 _gtk_marshal_VOID__BOXED_BOXED,
395 GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
396 GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE);
399 * GtkTextBuffer::changed:
400 * @textbuffer: the object which received the signal
402 * The ::changed signal is emitted when the content of a #GtkTextBuffer
406 g_signal_new (I_("changed"),
407 G_OBJECT_CLASS_TYPE (object_class),
409 G_STRUCT_OFFSET (GtkTextBufferClass, changed),
411 _gtk_marshal_VOID__VOID,
416 * GtkTextBuffer::modified-changed:
417 * @textbuffer: the object which received the signal
419 * The ::modified-changed signal is emitted when the modified bit of a
420 * #GtkTextBuffer flips.
423 * gtk_text_buffer_set_modified().
425 signals[MODIFIED_CHANGED] =
426 g_signal_new (I_("modified-changed"),
427 G_OBJECT_CLASS_TYPE (object_class),
429 G_STRUCT_OFFSET (GtkTextBufferClass, modified_changed),
431 _gtk_marshal_VOID__VOID,
436 * GtkTextBuffer::mark-set:
437 * @textbuffer: the object which received the signal
438 * @location: The location of @mark in @textbuffer
439 * @mark: The mark that is set
441 * The ::mark-set signal is emitted as notification
442 * after a #GtkTextMark is set.
445 * gtk_text_buffer_create_mark(),
446 * gtk_text_buffer_move_mark().
449 g_signal_new (I_("mark-set"),
450 G_OBJECT_CLASS_TYPE (object_class),
452 G_STRUCT_OFFSET (GtkTextBufferClass, mark_set),
454 _gtk_marshal_VOID__BOXED_OBJECT,
461 * GtkTextBuffer::mark-deleted:
462 * @textbuffer: the object which received the signal
463 * @mark: The mark that was deleted
465 * The ::mark-deleted signal is emitted as notification
466 * after a #GtkTextMark is deleted.
469 * gtk_text_buffer_delete_mark().
471 signals[MARK_DELETED] =
472 g_signal_new (I_("mark-deleted"),
473 G_OBJECT_CLASS_TYPE (object_class),
475 G_STRUCT_OFFSET (GtkTextBufferClass, mark_deleted),
477 _gtk_marshal_VOID__OBJECT,
483 * GtkTextBuffer::apply-tag:
484 * @textbuffer: the object which received the signal
485 * @tag: the applied tag
486 * @start: the start of the range the tag is applied to
487 * @end: the end of the range the tag is applied to
489 * The ::apply-tag signal is emitted to apply a tag to a
490 * range of text in a #GtkTextBuffer.
491 * Applying actually occurs in the default handler.
493 * Note that if your handler runs before the default handler it must not
494 * invalidate the @start and @end iters (or has to revalidate them).
497 * gtk_text_buffer_apply_tag(),
498 * gtk_text_buffer_insert_with_tags(),
499 * gtk_text_buffer_insert_range().
502 g_signal_new (I_("apply-tag"),
503 G_OBJECT_CLASS_TYPE (object_class),
505 G_STRUCT_OFFSET (GtkTextBufferClass, apply_tag),
507 _gtk_marshal_VOID__OBJECT_BOXED_BOXED,
516 * GtkTextBuffer::remove-tag:
517 * @textbuffer: the object which received the signal
518 * @tag: the tag to be removed
519 * @start: the start of the range the tag is removed from
520 * @end: the end of the range the tag is removed from
522 * The ::remove-tag signal is emitted to remove all occurrences of @tag from
523 * a range of text in a #GtkTextBuffer.
524 * Removal actually occurs in the default handler.
526 * Note that if your handler runs before the default handler it must not
527 * invalidate the @start and @end iters (or has to revalidate them).
530 * gtk_text_buffer_remove_tag().
532 signals[REMOVE_TAG] =
533 g_signal_new (I_("remove-tag"),
534 G_OBJECT_CLASS_TYPE (object_class),
536 G_STRUCT_OFFSET (GtkTextBufferClass, remove_tag),
538 _gtk_marshal_VOID__OBJECT_BOXED_BOXED,
546 * GtkTextBuffer::begin-user-action:
547 * @textbuffer: the object which received the signal
549 * The ::begin-user-action signal is emitted at the beginning of a single
550 * user-visible operation on a #GtkTextBuffer.
553 * gtk_text_buffer_begin_user_action(),
554 * gtk_text_buffer_insert_interactive(),
555 * gtk_text_buffer_insert_range_interactive(),
556 * gtk_text_buffer_delete_interactive(),
557 * gtk_text_buffer_backspace(),
558 * gtk_text_buffer_delete_selection().
560 signals[BEGIN_USER_ACTION] =
561 g_signal_new (I_("begin-user-action"),
562 G_OBJECT_CLASS_TYPE (object_class),
564 G_STRUCT_OFFSET (GtkTextBufferClass, begin_user_action),
566 _gtk_marshal_VOID__VOID,
571 * GtkTextBuffer::end-user-action:
572 * @textbuffer: the object which received the signal
574 * The ::end-user-action signal is emitted at the end of a single
575 * user-visible operation on the #GtkTextBuffer.
578 * gtk_text_buffer_end_user_action(),
579 * gtk_text_buffer_insert_interactive(),
580 * gtk_text_buffer_insert_range_interactive(),
581 * gtk_text_buffer_delete_interactive(),
582 * gtk_text_buffer_backspace(),
583 * gtk_text_buffer_delete_selection(),
584 * gtk_text_buffer_backspace().
586 signals[END_USER_ACTION] =
587 g_signal_new (I_("end-user-action"),
588 G_OBJECT_CLASS_TYPE (object_class),
590 G_STRUCT_OFFSET (GtkTextBufferClass, end_user_action),
592 _gtk_marshal_VOID__VOID,
597 * GtkTextBuffer::paste-done:
598 * @textbuffer: the object which received the signal
600 * The paste-done signal is emitted after paste operation has been completed.
601 * This is useful to properly scroll the view to the end of the pasted text.
602 * See gtk_text_buffer_paste_clipboard() for more details.
606 signals[PASTE_DONE] =
607 g_signal_new (I_("paste-done"),
608 G_OBJECT_CLASS_TYPE (object_class),
610 G_STRUCT_OFFSET (GtkTextBufferClass, paste_done),
612 _gtk_marshal_VOID__OBJECT,
617 g_type_class_add_private (object_class, sizeof (GtkTextBufferPrivate));
621 gtk_text_buffer_init (GtkTextBuffer *buffer)
623 buffer->priv = G_TYPE_INSTANCE_GET_PRIVATE (buffer,
624 GTK_TYPE_TEXT_BUFFER,
625 GtkTextBufferPrivate);
627 buffer->priv->clipboard_contents_buffers = NULL;
628 buffer->priv->tag_table = NULL;
630 /* allow copying of arbiatray stuff in the internal rich text format */
631 gtk_text_buffer_register_serialize_tagset (buffer, NULL);
635 set_table (GtkTextBuffer *buffer, GtkTextTagTable *table)
637 GtkTextBufferPrivate *priv = buffer->priv;
639 g_return_if_fail (priv->tag_table == NULL);
643 priv->tag_table = table;
644 g_object_ref (priv->tag_table);
645 _gtk_text_tag_table_add_buffer (table, buffer);
649 static GtkTextTagTable*
650 get_table (GtkTextBuffer *buffer)
652 GtkTextBufferPrivate *priv = buffer->priv;
654 if (priv->tag_table == NULL)
656 priv->tag_table = gtk_text_tag_table_new ();
657 _gtk_text_tag_table_add_buffer (priv->tag_table, buffer);
660 return priv->tag_table;
664 gtk_text_buffer_set_property (GObject *object,
669 GtkTextBuffer *text_buffer;
671 text_buffer = GTK_TEXT_BUFFER (object);
676 set_table (text_buffer, g_value_get_object (value));
680 gtk_text_buffer_set_text (text_buffer,
681 g_value_get_string (value), -1);
685 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
691 gtk_text_buffer_get_property (GObject *object,
696 GtkTextBuffer *text_buffer;
699 text_buffer = GTK_TEXT_BUFFER (object);
704 g_value_set_object (value, get_table (text_buffer));
709 GtkTextIter start, end;
711 gtk_text_buffer_get_start_iter (text_buffer, &start);
712 gtk_text_buffer_get_end_iter (text_buffer, &end);
714 g_value_take_string (value,
715 gtk_text_buffer_get_text (text_buffer,
716 &start, &end, FALSE));
720 case PROP_HAS_SELECTION:
721 g_value_set_boolean (value, text_buffer->priv->has_selection);
724 case PROP_CURSOR_POSITION:
725 gtk_text_buffer_get_iter_at_mark (text_buffer, &iter,
726 gtk_text_buffer_get_insert (text_buffer));
727 g_value_set_int (value, gtk_text_iter_get_offset (&iter));
730 case PROP_COPY_TARGET_LIST:
731 g_value_set_boxed (value, gtk_text_buffer_get_copy_target_list (text_buffer));
734 case PROP_PASTE_TARGET_LIST:
735 g_value_set_boxed (value, gtk_text_buffer_get_paste_target_list (text_buffer));
739 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
745 gtk_text_buffer_notify (GObject *object,
748 if (!strcmp (pspec->name, "copy-target-list") ||
749 !strcmp (pspec->name, "paste-target-list"))
751 gtk_text_buffer_free_target_lists (GTK_TEXT_BUFFER (object));
756 * gtk_text_buffer_new:
757 * @table: (allow-none): a tag table, or %NULL to create a new one
759 * Creates a new text buffer.
761 * Return value: a new text buffer
764 gtk_text_buffer_new (GtkTextTagTable *table)
766 GtkTextBuffer *text_buffer;
768 text_buffer = g_object_new (GTK_TYPE_TEXT_BUFFER, "tag-table", table, NULL);
774 gtk_text_buffer_finalize (GObject *object)
776 GtkTextBuffer *buffer;
777 GtkTextBufferPrivate *priv;
779 buffer = GTK_TEXT_BUFFER (object);
782 remove_all_selection_clipboards (buffer);
786 _gtk_text_tag_table_remove_buffer (priv->tag_table, buffer);
787 g_object_unref (priv->tag_table);
788 priv->tag_table = NULL;
793 _gtk_text_btree_unref (priv->btree);
797 if (priv->log_attr_cache)
798 free_log_attr_cache (priv->log_attr_cache);
800 priv->log_attr_cache = NULL;
802 gtk_text_buffer_free_target_lists (buffer);
804 G_OBJECT_CLASS (gtk_text_buffer_parent_class)->finalize (object);
808 get_btree (GtkTextBuffer *buffer)
810 GtkTextBufferPrivate *priv = buffer->priv;
812 if (priv->btree == NULL)
813 priv->btree = _gtk_text_btree_new (gtk_text_buffer_get_tag_table (buffer),
820 _gtk_text_buffer_get_btree (GtkTextBuffer *buffer)
822 return get_btree (buffer);
826 * gtk_text_buffer_get_tag_table:
827 * @buffer: a #GtkTextBuffer
829 * Get the #GtkTextTagTable associated with this buffer.
831 * Return value: (transfer none): the buffer's tag table
834 gtk_text_buffer_get_tag_table (GtkTextBuffer *buffer)
836 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
838 return get_table (buffer);
842 * gtk_text_buffer_set_text:
843 * @buffer: a #GtkTextBuffer
844 * @text: UTF-8 text to insert
845 * @len: length of @text in bytes
847 * Deletes current contents of @buffer, and inserts @text instead. If
848 * @len is -1, @text must be nul-terminated. @text must be valid UTF-8.
851 gtk_text_buffer_set_text (GtkTextBuffer *buffer,
855 GtkTextIter start, end;
857 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
858 g_return_if_fail (text != NULL);
863 gtk_text_buffer_get_bounds (buffer, &start, &end);
865 gtk_text_buffer_delete (buffer, &start, &end);
869 gtk_text_buffer_get_iter_at_offset (buffer, &start, 0);
870 gtk_text_buffer_insert (buffer, &start, text, len);
873 g_object_notify (G_OBJECT (buffer), "text");
883 gtk_text_buffer_real_insert_text (GtkTextBuffer *buffer,
888 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
889 g_return_if_fail (iter != NULL);
891 _gtk_text_btree_insert (iter, text, len);
893 g_signal_emit (buffer, signals[CHANGED], 0);
894 g_object_notify (G_OBJECT (buffer), "cursor-position");
898 gtk_text_buffer_emit_insert (GtkTextBuffer *buffer,
903 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
904 g_return_if_fail (iter != NULL);
905 g_return_if_fail (text != NULL);
910 g_return_if_fail (g_utf8_validate (text, len, NULL));
914 g_signal_emit (buffer, signals[INSERT_TEXT], 0,
920 * gtk_text_buffer_insert:
921 * @buffer: a #GtkTextBuffer
922 * @iter: a position in the buffer
923 * @text: text in UTF-8 format
924 * @len: length of text in bytes, or -1
926 * Inserts @len bytes of @text at position @iter. If @len is -1,
927 * @text must be nul-terminated and will be inserted in its
928 * entirety. Emits the "insert-text" signal; insertion actually occurs
929 * in the default handler for the signal. @iter is invalidated when
930 * insertion occurs (because the buffer contents change), but the
931 * default signal handler revalidates it to point to the end of the
935 gtk_text_buffer_insert (GtkTextBuffer *buffer,
940 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
941 g_return_if_fail (iter != NULL);
942 g_return_if_fail (text != NULL);
943 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
945 gtk_text_buffer_emit_insert (buffer, iter, text, len);
949 * gtk_text_buffer_insert_at_cursor:
950 * @buffer: a #GtkTextBuffer
951 * @text: text in UTF-8 format
952 * @len: length of text, in bytes
954 * Simply calls gtk_text_buffer_insert(), using the current
955 * cursor position as the insertion point.
958 gtk_text_buffer_insert_at_cursor (GtkTextBuffer *buffer,
964 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
965 g_return_if_fail (text != NULL);
967 gtk_text_buffer_get_iter_at_mark (buffer, &iter,
968 gtk_text_buffer_get_insert (buffer));
970 gtk_text_buffer_insert (buffer, &iter, text, len);
974 * gtk_text_buffer_insert_interactive:
975 * @buffer: a #GtkTextBuffer
976 * @iter: a position in @buffer
977 * @text: some UTF-8 text
978 * @len: length of text in bytes, or -1
979 * @default_editable: default editability of buffer
981 * Like gtk_text_buffer_insert(), but the insertion will not occur if
982 * @iter is at a non-editable location in the buffer. Usually you
983 * want to prevent insertions at ineditable locations if the insertion
984 * results from a user action (is interactive).
986 * @default_editable indicates the editability of text that doesn't
987 * have a tag affecting editability applied to it. Typically the
988 * result of gtk_text_view_get_editable() is appropriate here.
990 * Return value: whether text was actually inserted
993 gtk_text_buffer_insert_interactive (GtkTextBuffer *buffer,
997 gboolean default_editable)
999 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
1000 g_return_val_if_fail (text != NULL, FALSE);
1001 g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, FALSE);
1003 if (gtk_text_iter_can_insert (iter, default_editable))
1005 gtk_text_buffer_begin_user_action (buffer);
1006 gtk_text_buffer_emit_insert (buffer, iter, text, len);
1007 gtk_text_buffer_end_user_action (buffer);
1015 * gtk_text_buffer_insert_interactive_at_cursor:
1016 * @buffer: a #GtkTextBuffer
1017 * @text: text in UTF-8 format
1018 * @len: length of text in bytes, or -1
1019 * @default_editable: default editability of buffer
1021 * Calls gtk_text_buffer_insert_interactive() at the cursor
1024 * @default_editable indicates the editability of text that doesn't
1025 * have a tag affecting editability applied to it. Typically the
1026 * result of gtk_text_view_get_editable() is appropriate here.
1028 * Return value: whether text was actually inserted
1031 gtk_text_buffer_insert_interactive_at_cursor (GtkTextBuffer *buffer,
1034 gboolean default_editable)
1038 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
1039 g_return_val_if_fail (text != NULL, FALSE);
1041 gtk_text_buffer_get_iter_at_mark (buffer, &iter,
1042 gtk_text_buffer_get_insert (buffer));
1044 return gtk_text_buffer_insert_interactive (buffer, &iter, text, len,
1049 possibly_not_text (gunichar ch,
1052 return ch == GTK_TEXT_UNKNOWN_CHAR;
1056 insert_text_range (GtkTextBuffer *buffer,
1058 const GtkTextIter *orig_start,
1059 const GtkTextIter *orig_end,
1060 gboolean interactive)
1064 text = gtk_text_iter_get_text (orig_start, orig_end);
1066 gtk_text_buffer_emit_insert (buffer, iter, text, -1);
1071 typedef struct _Range Range;
1074 GtkTextBuffer *buffer;
1075 GtkTextMark *start_mark;
1076 GtkTextMark *end_mark;
1077 GtkTextMark *whole_end_mark;
1078 GtkTextIter *range_start;
1079 GtkTextIter *range_end;
1080 GtkTextIter *whole_end;
1084 save_range (GtkTextIter *range_start,
1085 GtkTextIter *range_end,
1086 GtkTextIter *whole_end)
1090 r = g_new (Range, 1);
1092 r->buffer = gtk_text_iter_get_buffer (range_start);
1093 g_object_ref (r->buffer);
1096 gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (range_start),
1101 gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (range_start),
1107 gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (range_start),
1112 r->range_start = range_start;
1113 r->range_end = range_end;
1114 r->whole_end = whole_end;
1120 restore_range (Range *r)
1122 gtk_text_buffer_get_iter_at_mark (r->buffer,
1126 gtk_text_buffer_get_iter_at_mark (r->buffer,
1130 gtk_text_buffer_get_iter_at_mark (r->buffer,
1134 gtk_text_buffer_delete_mark (r->buffer, r->start_mark);
1135 gtk_text_buffer_delete_mark (r->buffer, r->end_mark);
1136 gtk_text_buffer_delete_mark (r->buffer, r->whole_end_mark);
1138 /* Due to the gravities on the marks, the ordering could have
1139 * gotten mangled; we switch to an empty range in that
1143 if (gtk_text_iter_compare (r->range_start, r->range_end) > 0)
1144 *r->range_start = *r->range_end;
1146 if (gtk_text_iter_compare (r->range_end, r->whole_end) > 0)
1147 *r->range_end = *r->whole_end;
1149 g_object_unref (r->buffer);
1154 insert_range_untagged (GtkTextBuffer *buffer,
1156 const GtkTextIter *orig_start,
1157 const GtkTextIter *orig_end,
1158 gboolean interactive)
1160 GtkTextIter range_start;
1161 GtkTextIter range_end;
1162 GtkTextIter start, end;
1165 if (gtk_text_iter_equal (orig_start, orig_end))
1168 start = *orig_start;
1171 range_start = start;
1176 if (gtk_text_iter_equal (&range_start, &range_end))
1178 /* Figure out how to move forward */
1180 g_assert (gtk_text_iter_compare (&range_end, &end) <= 0);
1182 if (gtk_text_iter_equal (&range_end, &end))
1184 /* nothing left to do */
1187 else if (gtk_text_iter_get_char (&range_end) == GTK_TEXT_UNKNOWN_CHAR)
1189 GdkPixbuf *pixbuf = NULL;
1190 GtkTextChildAnchor *anchor = NULL;
1191 pixbuf = gtk_text_iter_get_pixbuf (&range_end);
1192 anchor = gtk_text_iter_get_child_anchor (&range_end);
1196 r = save_range (&range_start,
1200 gtk_text_buffer_insert_pixbuf (buffer,
1207 gtk_text_iter_forward_char (&range_end);
1209 range_start = range_end;
1213 /* Just skip anchors */
1215 gtk_text_iter_forward_char (&range_end);
1216 range_start = range_end;
1220 /* The GTK_TEXT_UNKNOWN_CHAR was in a text segment, so
1223 gtk_text_iter_forward_find_char (&range_end,
1224 possibly_not_text, NULL,
1227 g_assert (gtk_text_iter_compare (&range_end, &end) <= 0);
1232 /* Text segment starts here, so forward search to
1233 * find its possible endpoint
1235 gtk_text_iter_forward_find_char (&range_end,
1236 possibly_not_text, NULL,
1239 g_assert (gtk_text_iter_compare (&range_end, &end) <= 0);
1244 r = save_range (&range_start,
1248 insert_text_range (buffer,
1257 range_start = range_end;
1263 insert_range_not_inside_self (GtkTextBuffer *buffer,
1265 const GtkTextIter *orig_start,
1266 const GtkTextIter *orig_end,
1267 gboolean interactive)
1269 /* Find each range of uniformly-tagged text, insert it,
1270 * then apply the tags.
1272 GtkTextIter start = *orig_start;
1273 GtkTextIter end = *orig_end;
1274 GtkTextIter range_start;
1275 GtkTextIter range_end;
1277 if (gtk_text_iter_equal (orig_start, orig_end))
1280 gtk_text_iter_order (&start, &end);
1282 range_start = start;
1288 GtkTextIter start_iter;
1293 if (gtk_text_iter_equal (&range_start, &end))
1294 break; /* All done */
1296 g_assert (gtk_text_iter_compare (&range_start, &end) < 0);
1298 gtk_text_iter_forward_to_tag_toggle (&range_end, NULL);
1300 g_assert (!gtk_text_iter_equal (&range_start, &range_end));
1302 /* Clamp to the end iterator */
1303 if (gtk_text_iter_compare (&range_end, &end) > 0)
1306 /* We have a range with unique tags; insert it, and
1309 start_offset = gtk_text_iter_get_offset (iter);
1311 r = save_range (&range_start, &range_end, &end);
1313 insert_range_untagged (buffer, iter, &range_start, &range_end, interactive);
1318 gtk_text_buffer_get_iter_at_offset (buffer, &start_iter, start_offset);
1320 tags = gtk_text_iter_get_tags (&range_start);
1322 while (tmp_list != NULL)
1324 gtk_text_buffer_apply_tag (buffer,
1329 tmp_list = g_slist_next (tmp_list);
1331 g_slist_free (tags);
1333 range_start = range_end;
1338 gtk_text_buffer_real_insert_range (GtkTextBuffer *buffer,
1340 const GtkTextIter *orig_start,
1341 const GtkTextIter *orig_end,
1342 gboolean interactive)
1344 GtkTextBuffer *src_buffer;
1346 /* Find each range of uniformly-tagged text, insert it,
1347 * then apply the tags.
1349 if (gtk_text_iter_equal (orig_start, orig_end))
1353 gtk_text_buffer_begin_user_action (buffer);
1355 src_buffer = gtk_text_iter_get_buffer (orig_start);
1357 if (gtk_text_iter_get_buffer (iter) != src_buffer ||
1358 !gtk_text_iter_in_range (iter, orig_start, orig_end))
1360 insert_range_not_inside_self (buffer, iter, orig_start, orig_end, interactive);
1364 /* If you insert a range into itself, it could loop infinitely
1365 * because the region being copied keeps growing as we insert. So
1366 * we have to separately copy the range before and after
1367 * the insertion point.
1369 GtkTextIter start = *orig_start;
1370 GtkTextIter end = *orig_end;
1371 GtkTextIter range_start;
1372 GtkTextIter range_end;
1376 gtk_text_iter_order (&start, &end);
1378 range_start = start;
1380 first_half = save_range (&range_start, &range_end, &end);
1382 range_start = *iter;
1384 second_half = save_range (&range_start, &range_end, &end);
1386 restore_range (first_half);
1387 insert_range_not_inside_self (buffer, iter, &range_start, &range_end, interactive);
1389 restore_range (second_half);
1390 insert_range_not_inside_self (buffer, iter, &range_start, &range_end, interactive);
1394 gtk_text_buffer_end_user_action (buffer);
1398 * gtk_text_buffer_insert_range:
1399 * @buffer: a #GtkTextBuffer
1400 * @iter: a position in @buffer
1401 * @start: a position in a #GtkTextBuffer
1402 * @end: another position in the same buffer as @start
1404 * Copies text, tags, and pixbufs between @start and @end (the order
1405 * of @start and @end doesn't matter) and inserts the copy at @iter.
1406 * Used instead of simply getting/inserting text because it preserves
1407 * images and tags. If @start and @end are in a different buffer from
1408 * @buffer, the two buffers must share the same tag table.
1410 * Implemented via emissions of the insert_text and apply_tag signals,
1414 gtk_text_buffer_insert_range (GtkTextBuffer *buffer,
1416 const GtkTextIter *start,
1417 const GtkTextIter *end)
1419 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1420 g_return_if_fail (iter != NULL);
1421 g_return_if_fail (start != NULL);
1422 g_return_if_fail (end != NULL);
1423 g_return_if_fail (gtk_text_iter_get_buffer (start) ==
1424 gtk_text_iter_get_buffer (end));
1425 g_return_if_fail (gtk_text_iter_get_buffer (start)->priv->tag_table ==
1426 buffer->priv->tag_table);
1427 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
1429 gtk_text_buffer_real_insert_range (buffer, iter, start, end, FALSE);
1433 * gtk_text_buffer_insert_range_interactive:
1434 * @buffer: a #GtkTextBuffer
1435 * @iter: a position in @buffer
1436 * @start: a position in a #GtkTextBuffer
1437 * @end: another position in the same buffer as @start
1438 * @default_editable: default editability of the buffer
1440 * Same as gtk_text_buffer_insert_range(), but does nothing if the
1441 * insertion point isn't editable. The @default_editable parameter
1442 * indicates whether the text is editable at @iter if no tags
1443 * enclosing @iter affect editability. Typically the result of
1444 * gtk_text_view_get_editable() is appropriate here.
1446 * Returns: whether an insertion was possible at @iter
1449 gtk_text_buffer_insert_range_interactive (GtkTextBuffer *buffer,
1451 const GtkTextIter *start,
1452 const GtkTextIter *end,
1453 gboolean default_editable)
1455 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
1456 g_return_val_if_fail (iter != NULL, FALSE);
1457 g_return_val_if_fail (start != NULL, FALSE);
1458 g_return_val_if_fail (end != NULL, FALSE);
1459 g_return_val_if_fail (gtk_text_iter_get_buffer (start) ==
1460 gtk_text_iter_get_buffer (end), FALSE);
1461 g_return_val_if_fail (gtk_text_iter_get_buffer (start)->priv->tag_table ==
1462 buffer->priv->tag_table, FALSE);
1464 if (gtk_text_iter_can_insert (iter, default_editable))
1466 gtk_text_buffer_real_insert_range (buffer, iter, start, end, TRUE);
1474 * gtk_text_buffer_insert_with_tags:
1475 * @buffer: a #GtkTextBuffer
1476 * @iter: an iterator in @buffer
1478 * @len: length of @text, or -1
1479 * @first_tag: first tag to apply to @text
1480 * @Varargs: NULL-terminated list of tags to apply
1482 * Inserts @text into @buffer at @iter, applying the list of tags to
1483 * the newly-inserted text. The last tag specified must be NULL to
1484 * terminate the list. Equivalent to calling gtk_text_buffer_insert(),
1485 * then gtk_text_buffer_apply_tag() on the inserted text;
1486 * gtk_text_buffer_insert_with_tags() is just a convenience function.
1489 gtk_text_buffer_insert_with_tags (GtkTextBuffer *buffer,
1493 GtkTextTag *first_tag,
1501 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1502 g_return_if_fail (iter != NULL);
1503 g_return_if_fail (text != NULL);
1504 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
1506 start_offset = gtk_text_iter_get_offset (iter);
1508 gtk_text_buffer_insert (buffer, iter, text, len);
1510 if (first_tag == NULL)
1513 gtk_text_buffer_get_iter_at_offset (buffer, &start, start_offset);
1515 va_start (args, first_tag);
1519 gtk_text_buffer_apply_tag (buffer, tag, &start, iter);
1521 tag = va_arg (args, GtkTextTag*);
1528 * gtk_text_buffer_insert_with_tags_by_name:
1529 * @buffer: a #GtkTextBuffer
1530 * @iter: position in @buffer
1532 * @len: length of @text, or -1
1533 * @first_tag_name: name of a tag to apply to @text
1534 * @Varargs: more tag names
1536 * Same as gtk_text_buffer_insert_with_tags(), but allows you
1537 * to pass in tag names instead of tag objects.
1540 gtk_text_buffer_insert_with_tags_by_name (GtkTextBuffer *buffer,
1544 const gchar *first_tag_name,
1550 const gchar *tag_name;
1552 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1553 g_return_if_fail (iter != NULL);
1554 g_return_if_fail (text != NULL);
1555 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
1557 start_offset = gtk_text_iter_get_offset (iter);
1559 gtk_text_buffer_insert (buffer, iter, text, len);
1561 if (first_tag_name == NULL)
1564 gtk_text_buffer_get_iter_at_offset (buffer, &start, start_offset);
1566 va_start (args, first_tag_name);
1567 tag_name = first_tag_name;
1572 tag = gtk_text_tag_table_lookup (buffer->priv->tag_table,
1577 g_warning ("%s: no tag with name '%s'!", G_STRLOC, tag_name);
1582 gtk_text_buffer_apply_tag (buffer, tag, &start, iter);
1584 tag_name = va_arg (args, const gchar*);
1596 gtk_text_buffer_real_delete_range (GtkTextBuffer *buffer,
1600 gboolean has_selection;
1602 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1603 g_return_if_fail (start != NULL);
1604 g_return_if_fail (end != NULL);
1606 _gtk_text_btree_delete (start, end);
1608 /* may have deleted the selection... */
1609 update_selection_clipboards (buffer);
1611 has_selection = gtk_text_buffer_get_selection_bounds (buffer, NULL, NULL);
1612 if (has_selection != buffer->priv->has_selection)
1614 buffer->priv->has_selection = has_selection;
1615 g_object_notify (G_OBJECT (buffer), "has-selection");
1618 g_signal_emit (buffer, signals[CHANGED], 0);
1619 g_object_notify (G_OBJECT (buffer), "cursor-position");
1623 gtk_text_buffer_emit_delete (GtkTextBuffer *buffer,
1627 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1628 g_return_if_fail (start != NULL);
1629 g_return_if_fail (end != NULL);
1631 if (gtk_text_iter_equal (start, end))
1634 gtk_text_iter_order (start, end);
1636 g_signal_emit (buffer,
1637 signals[DELETE_RANGE],
1643 * gtk_text_buffer_delete:
1644 * @buffer: a #GtkTextBuffer
1645 * @start: a position in @buffer
1646 * @end: another position in @buffer
1648 * Deletes text between @start and @end. The order of @start and @end
1649 * is not actually relevant; gtk_text_buffer_delete() will reorder
1650 * them. This function actually emits the "delete-range" signal, and
1651 * the default handler of that signal deletes the text. Because the
1652 * buffer is modified, all outstanding iterators become invalid after
1653 * calling this function; however, the @start and @end will be
1654 * re-initialized to point to the location where text was deleted.
1657 gtk_text_buffer_delete (GtkTextBuffer *buffer,
1661 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1662 g_return_if_fail (start != NULL);
1663 g_return_if_fail (end != NULL);
1664 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
1665 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
1667 gtk_text_buffer_emit_delete (buffer, start, end);
1671 * gtk_text_buffer_delete_interactive:
1672 * @buffer: a #GtkTextBuffer
1673 * @start_iter: start of range to delete
1674 * @end_iter: end of range
1675 * @default_editable: whether the buffer is editable by default
1677 * Deletes all <emphasis>editable</emphasis> text in the given range.
1678 * Calls gtk_text_buffer_delete() for each editable sub-range of
1679 * [@start,@end). @start and @end are revalidated to point to
1680 * the location of the last deleted range, or left untouched if
1681 * no text was deleted.
1683 * Return value: whether some text was actually deleted
1686 gtk_text_buffer_delete_interactive (GtkTextBuffer *buffer,
1687 GtkTextIter *start_iter,
1688 GtkTextIter *end_iter,
1689 gboolean default_editable)
1691 GtkTextMark *end_mark;
1692 GtkTextMark *start_mark;
1694 gboolean current_state;
1695 gboolean deleted_stuff = FALSE;
1697 /* Delete all editable text in the range start_iter, end_iter */
1699 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
1700 g_return_val_if_fail (start_iter != NULL, FALSE);
1701 g_return_val_if_fail (end_iter != NULL, FALSE);
1702 g_return_val_if_fail (gtk_text_iter_get_buffer (start_iter) == buffer, FALSE);
1703 g_return_val_if_fail (gtk_text_iter_get_buffer (end_iter) == buffer, FALSE);
1706 gtk_text_buffer_begin_user_action (buffer);
1708 gtk_text_iter_order (start_iter, end_iter);
1710 start_mark = gtk_text_buffer_create_mark (buffer, NULL,
1712 end_mark = gtk_text_buffer_create_mark (buffer, NULL,
1715 gtk_text_buffer_get_iter_at_mark (buffer, &iter, start_mark);
1717 current_state = gtk_text_iter_editable (&iter, default_editable);
1722 gboolean done = FALSE;
1725 gtk_text_iter_forward_to_tag_toggle (&iter, NULL);
1727 gtk_text_buffer_get_iter_at_mark (buffer, &end, end_mark);
1729 if (gtk_text_iter_compare (&iter, &end) >= 0)
1732 iter = end; /* clamp to the last boundary */
1735 new_state = gtk_text_iter_editable (&iter, default_editable);
1737 if (current_state == new_state)
1743 /* We're ending an editable region. Delete said region. */
1746 gtk_text_buffer_get_iter_at_mark (buffer, &start, start_mark);
1748 gtk_text_buffer_emit_delete (buffer, &start, &iter);
1750 deleted_stuff = TRUE;
1752 /* revalidate user's iterators. */
1753 *start_iter = start;
1763 if (current_state && !new_state)
1765 /* End of an editable region. Delete it. */
1768 gtk_text_buffer_get_iter_at_mark (buffer, &start, start_mark);
1770 gtk_text_buffer_emit_delete (buffer, &start, &iter);
1772 /* It's more robust to ask for the state again then to assume that
1773 * we're on the next not-editable segment. We don't know what the
1774 * ::delete-range handler did.... maybe it deleted the following
1775 * not-editable segment because it was associated with the editable
1778 current_state = gtk_text_iter_editable (&iter, default_editable);
1779 deleted_stuff = TRUE;
1781 /* revalidate user's iterators. */
1782 *start_iter = start;
1787 /* We are at the start of an editable region. We won't be deleting
1788 * the previous region. Move start mark to start of this region.
1791 g_assert (!current_state && new_state);
1793 gtk_text_buffer_move_mark (buffer, start_mark, &iter);
1795 current_state = TRUE;
1802 gtk_text_buffer_delete_mark (buffer, start_mark);
1803 gtk_text_buffer_delete_mark (buffer, end_mark);
1805 gtk_text_buffer_end_user_action (buffer);
1807 return deleted_stuff;
1811 * Extracting textual buffer contents
1815 * gtk_text_buffer_get_text:
1816 * @buffer: a #GtkTextBuffer
1817 * @start: start of a range
1818 * @end: end of a range
1819 * @include_hidden_chars: whether to include invisible text
1821 * Returns the text in the range [@start,@end). Excludes undisplayed
1822 * text (text marked with tags that set the invisibility attribute) if
1823 * @include_hidden_chars is %FALSE. Does not include characters
1824 * representing embedded images, so byte and character indexes into
1825 * the returned string do <emphasis>not</emphasis> correspond to byte
1826 * and character indexes into the buffer. Contrast with
1827 * gtk_text_buffer_get_slice().
1829 * Return value: an allocated UTF-8 string
1832 gtk_text_buffer_get_text (GtkTextBuffer *buffer,
1833 const GtkTextIter *start,
1834 const GtkTextIter *end,
1835 gboolean include_hidden_chars)
1837 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
1838 g_return_val_if_fail (start != NULL, NULL);
1839 g_return_val_if_fail (end != NULL, NULL);
1840 g_return_val_if_fail (gtk_text_iter_get_buffer (start) == buffer, NULL);
1841 g_return_val_if_fail (gtk_text_iter_get_buffer (end) == buffer, NULL);
1843 if (include_hidden_chars)
1844 return gtk_text_iter_get_text (start, end);
1846 return gtk_text_iter_get_visible_text (start, end);
1850 * gtk_text_buffer_get_slice:
1851 * @buffer: a #GtkTextBuffer
1852 * @start: start of a range
1853 * @end: end of a range
1854 * @include_hidden_chars: whether to include invisible text
1856 * Returns the text in the range [@start,@end). Excludes undisplayed
1857 * text (text marked with tags that set the invisibility attribute) if
1858 * @include_hidden_chars is %FALSE. The returned string includes a
1859 * 0xFFFC character whenever the buffer contains
1860 * embedded images, so byte and character indexes into
1861 * the returned string <emphasis>do</emphasis> correspond to byte
1862 * and character indexes into the buffer. Contrast with
1863 * gtk_text_buffer_get_text(). Note that 0xFFFC can occur in normal
1864 * text as well, so it is not a reliable indicator that a pixbuf or
1865 * widget is in the buffer.
1867 * Return value: an allocated UTF-8 string
1870 gtk_text_buffer_get_slice (GtkTextBuffer *buffer,
1871 const GtkTextIter *start,
1872 const GtkTextIter *end,
1873 gboolean include_hidden_chars)
1875 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
1876 g_return_val_if_fail (start != NULL, NULL);
1877 g_return_val_if_fail (end != NULL, NULL);
1878 g_return_val_if_fail (gtk_text_iter_get_buffer (start) == buffer, NULL);
1879 g_return_val_if_fail (gtk_text_iter_get_buffer (end) == buffer, NULL);
1881 if (include_hidden_chars)
1882 return gtk_text_iter_get_slice (start, end);
1884 return gtk_text_iter_get_visible_slice (start, end);
1892 gtk_text_buffer_real_insert_pixbuf (GtkTextBuffer *buffer,
1896 _gtk_text_btree_insert_pixbuf (iter, pixbuf);
1898 g_signal_emit (buffer, signals[CHANGED], 0);
1902 * gtk_text_buffer_insert_pixbuf:
1903 * @buffer: a #GtkTextBuffer
1904 * @iter: location to insert the pixbuf
1905 * @pixbuf: a #GdkPixbuf
1907 * Inserts an image into the text buffer at @iter. The image will be
1908 * counted as one character in character counts, and when obtaining
1909 * the buffer contents as a string, will be represented by the Unicode
1910 * "object replacement character" 0xFFFC. Note that the "slice"
1911 * variants for obtaining portions of the buffer as a string include
1912 * this character for pixbufs, but the "text" variants do
1913 * not. e.g. see gtk_text_buffer_get_slice() and
1914 * gtk_text_buffer_get_text().
1917 gtk_text_buffer_insert_pixbuf (GtkTextBuffer *buffer,
1921 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1922 g_return_if_fail (iter != NULL);
1923 g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
1924 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
1926 g_signal_emit (buffer, signals[INSERT_PIXBUF], 0,
1936 gtk_text_buffer_real_insert_anchor (GtkTextBuffer *buffer,
1938 GtkTextChildAnchor *anchor)
1940 _gtk_text_btree_insert_child_anchor (iter, anchor);
1942 g_signal_emit (buffer, signals[CHANGED], 0);
1946 * gtk_text_buffer_insert_child_anchor:
1947 * @buffer: a #GtkTextBuffer
1948 * @iter: location to insert the anchor
1949 * @anchor: a #GtkTextChildAnchor
1951 * Inserts a child widget anchor into the text buffer at @iter. The
1952 * anchor will be counted as one character in character counts, and
1953 * when obtaining the buffer contents as a string, will be represented
1954 * by the Unicode "object replacement character" 0xFFFC. Note that the
1955 * "slice" variants for obtaining portions of the buffer as a string
1956 * include this character for child anchors, but the "text" variants do
1957 * not. E.g. see gtk_text_buffer_get_slice() and
1958 * gtk_text_buffer_get_text(). Consider
1959 * gtk_text_buffer_create_child_anchor() as a more convenient
1960 * alternative to this function. The buffer will add a reference to
1961 * the anchor, so you can unref it after insertion.
1964 gtk_text_buffer_insert_child_anchor (GtkTextBuffer *buffer,
1966 GtkTextChildAnchor *anchor)
1968 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1969 g_return_if_fail (iter != NULL);
1970 g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor));
1971 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
1973 g_signal_emit (buffer, signals[INSERT_CHILD_ANCHOR], 0,
1978 * gtk_text_buffer_create_child_anchor:
1979 * @buffer: a #GtkTextBuffer
1980 * @iter: location in the buffer
1982 * This is a convenience function which simply creates a child anchor
1983 * with gtk_text_child_anchor_new() and inserts it into the buffer
1984 * with gtk_text_buffer_insert_child_anchor(). The new anchor is
1985 * owned by the buffer; no reference count is returned to
1986 * the caller of gtk_text_buffer_create_child_anchor().
1988 * Return value: (transfer none): the created child anchor
1991 gtk_text_buffer_create_child_anchor (GtkTextBuffer *buffer,
1994 GtkTextChildAnchor *anchor;
1996 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
1997 g_return_val_if_fail (iter != NULL, NULL);
1998 g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, NULL);
2000 anchor = gtk_text_child_anchor_new ();
2002 gtk_text_buffer_insert_child_anchor (buffer, iter, anchor);
2004 g_object_unref (anchor);
2014 gtk_text_buffer_mark_set (GtkTextBuffer *buffer,
2015 const GtkTextIter *location,
2018 /* IMO this should NOT work like insert_text and delete_range,
2019 * where the real action happens in the default handler.
2021 * The reason is that the default handler would be _required_,
2022 * i.e. the whole widget would start breaking and segfaulting if the
2023 * default handler didn't get run. So you can't really override the
2024 * default handler or stop the emission; that is, this signal is
2025 * purely for notification, and not to allow users to modify the
2029 g_object_ref (mark);
2031 g_signal_emit (buffer,
2037 g_object_unref (mark);
2041 * gtk_text_buffer_set_mark:
2042 * @buffer: a #GtkTextBuffer
2043 * @mark_name: name of the mark
2044 * @iter: location for the mark
2045 * @left_gravity: if the mark is created by this function, gravity for
2047 * @should_exist: if %TRUE, warn if the mark does not exist, and return
2050 * Move the mark to the given position, if not @should_exist,
2053 * Return value: mark
2056 gtk_text_buffer_set_mark (GtkTextBuffer *buffer,
2057 GtkTextMark *existing_mark,
2058 const gchar *mark_name,
2059 const GtkTextIter *iter,
2060 gboolean left_gravity,
2061 gboolean should_exist)
2063 GtkTextIter location;
2066 g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, NULL);
2068 mark = _gtk_text_btree_set_mark (get_btree (buffer),
2075 _gtk_text_btree_get_iter_at_mark (get_btree (buffer),
2079 gtk_text_buffer_mark_set (buffer, &location, mark);
2085 * gtk_text_buffer_create_mark:
2086 * @buffer: a #GtkTextBuffer
2087 * @mark_name: (allow-none): name for mark, or %NULL
2088 * @where: location to place mark
2089 * @left_gravity: whether the mark has left gravity
2091 * Creates a mark at position @where. If @mark_name is %NULL, the mark
2092 * is anonymous; otherwise, the mark can be retrieved by name using
2093 * gtk_text_buffer_get_mark(). If a mark has left gravity, and text is
2094 * inserted at the mark's current location, the mark will be moved to
2095 * the left of the newly-inserted text. If the mark has right gravity
2096 * (@left_gravity = %FALSE), the mark will end up on the right of
2097 * newly-inserted text. The standard left-to-right cursor is a mark
2098 * with right gravity (when you type, the cursor stays on the right
2099 * side of the text you're typing).
2101 * The caller of this function does <emphasis>not</emphasis> own a
2102 * reference to the returned #GtkTextMark, so you can ignore the
2103 * return value if you like. Marks are owned by the buffer and go
2104 * away when the buffer does.
2106 * Emits the "mark-set" signal as notification of the mark's initial
2109 * Return value: (transfer none): the new #GtkTextMark object
2112 gtk_text_buffer_create_mark (GtkTextBuffer *buffer,
2113 const gchar *mark_name,
2114 const GtkTextIter *where,
2115 gboolean left_gravity)
2117 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
2119 return gtk_text_buffer_set_mark (buffer, NULL, mark_name, where,
2120 left_gravity, FALSE);
2124 * gtk_text_buffer_add_mark:
2125 * @buffer: a #GtkTextBuffer
2126 * @mark: the mark to add
2127 * @where: location to place mark
2129 * Adds the mark at position @where. The mark must not be added to
2130 * another buffer, and if its name is not %NULL then there must not
2131 * be another mark in the buffer with the same name.
2133 * Emits the "mark-set" signal as notification of the mark's initial
2139 gtk_text_buffer_add_mark (GtkTextBuffer *buffer,
2141 const GtkTextIter *where)
2145 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2146 g_return_if_fail (GTK_IS_TEXT_MARK (mark));
2147 g_return_if_fail (where != NULL);
2148 g_return_if_fail (gtk_text_mark_get_buffer (mark) == NULL);
2150 name = gtk_text_mark_get_name (mark);
2152 if (name != NULL && gtk_text_buffer_get_mark (buffer, name) != NULL)
2154 g_critical ("Mark %s already exists in the buffer", name);
2158 gtk_text_buffer_set_mark (buffer, mark, NULL, where, FALSE, FALSE);
2162 * gtk_text_buffer_move_mark:
2163 * @buffer: a #GtkTextBuffer
2164 * @mark: a #GtkTextMark
2165 * @where: new location for @mark in @buffer
2167 * Moves @mark to the new location @where. Emits the "mark-set" signal
2168 * as notification of the move.
2171 gtk_text_buffer_move_mark (GtkTextBuffer *buffer,
2173 const GtkTextIter *where)
2175 g_return_if_fail (GTK_IS_TEXT_MARK (mark));
2176 g_return_if_fail (!gtk_text_mark_get_deleted (mark));
2177 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2179 gtk_text_buffer_set_mark (buffer, mark, NULL, where, FALSE, TRUE);
2183 * gtk_text_buffer_get_iter_at_mark:
2184 * @buffer: a #GtkTextBuffer
2185 * @iter: (out): iterator to initialize
2186 * @mark: a #GtkTextMark in @buffer
2188 * Initializes @iter with the current position of @mark.
2191 gtk_text_buffer_get_iter_at_mark (GtkTextBuffer *buffer,
2195 g_return_if_fail (GTK_IS_TEXT_MARK (mark));
2196 g_return_if_fail (!gtk_text_mark_get_deleted (mark));
2197 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2199 _gtk_text_btree_get_iter_at_mark (get_btree (buffer),
2205 * gtk_text_buffer_delete_mark:
2206 * @buffer: a #GtkTextBuffer
2207 * @mark: a #GtkTextMark in @buffer
2209 * Deletes @mark, so that it's no longer located anywhere in the
2210 * buffer. Removes the reference the buffer holds to the mark, so if
2211 * you haven't called g_object_ref() on the mark, it will be freed. Even
2212 * if the mark isn't freed, most operations on @mark become
2213 * invalid, until it gets added to a buffer again with
2214 * gtk_text_buffer_add_mark(). Use gtk_text_mark_get_deleted() to
2215 * find out if a mark has been removed from its buffer.
2216 * The "mark-deleted" signal will be emitted as notification after
2217 * the mark is deleted.
2220 gtk_text_buffer_delete_mark (GtkTextBuffer *buffer,
2223 g_return_if_fail (GTK_IS_TEXT_MARK (mark));
2224 g_return_if_fail (!gtk_text_mark_get_deleted (mark));
2225 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2227 g_object_ref (mark);
2229 _gtk_text_btree_remove_mark (get_btree (buffer), mark);
2231 /* See rationale above for MARK_SET on why we emit this after
2232 * removing the mark, rather than removing the mark in a default
2235 g_signal_emit (buffer, signals[MARK_DELETED],
2239 g_object_unref (mark);
2243 * gtk_text_buffer_get_mark:
2244 * @buffer: a #GtkTextBuffer
2245 * @name: a mark name
2247 * Returns the mark named @name in buffer @buffer, or %NULL if no such
2248 * mark exists in the buffer.
2250 * Return value: (transfer none): a #GtkTextMark, or %NULL
2253 gtk_text_buffer_get_mark (GtkTextBuffer *buffer,
2258 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
2259 g_return_val_if_fail (name != NULL, NULL);
2261 mark = _gtk_text_btree_get_mark_by_name (get_btree (buffer), name);
2267 * gtk_text_buffer_move_mark_by_name:
2268 * @buffer: a #GtkTextBuffer
2269 * @name: name of a mark
2270 * @where: new location for mark
2272 * Moves the mark named @name (which must exist) to location @where.
2273 * See gtk_text_buffer_move_mark() for details.
2276 gtk_text_buffer_move_mark_by_name (GtkTextBuffer *buffer,
2278 const GtkTextIter *where)
2282 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2283 g_return_if_fail (name != NULL);
2285 mark = _gtk_text_btree_get_mark_by_name (get_btree (buffer), name);
2289 g_warning ("%s: no mark named '%s'", G_STRLOC, name);
2293 gtk_text_buffer_move_mark (buffer, mark, where);
2297 * gtk_text_buffer_delete_mark_by_name:
2298 * @buffer: a #GtkTextBuffer
2299 * @name: name of a mark in @buffer
2301 * Deletes the mark named @name; the mark must exist. See
2302 * gtk_text_buffer_delete_mark() for details.
2305 gtk_text_buffer_delete_mark_by_name (GtkTextBuffer *buffer,
2310 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2311 g_return_if_fail (name != NULL);
2313 mark = _gtk_text_btree_get_mark_by_name (get_btree (buffer), name);
2317 g_warning ("%s: no mark named '%s'", G_STRLOC, name);
2321 gtk_text_buffer_delete_mark (buffer, mark);
2325 * gtk_text_buffer_get_insert:
2326 * @buffer: a #GtkTextBuffer
2328 * Returns the mark that represents the cursor (insertion point).
2329 * Equivalent to calling gtk_text_buffer_get_mark() to get the mark
2330 * named "insert", but very slightly more efficient, and involves less
2333 * Return value: (transfer none): insertion point mark
2336 gtk_text_buffer_get_insert (GtkTextBuffer *buffer)
2338 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
2340 return _gtk_text_btree_get_insert (get_btree (buffer));
2344 * gtk_text_buffer_get_selection_bound:
2345 * @buffer: a #GtkTextBuffer
2347 * Returns the mark that represents the selection bound. Equivalent
2348 * to calling gtk_text_buffer_get_mark() to get the mark named
2349 * "selection_bound", but very slightly more efficient, and involves
2352 * The currently-selected text in @buffer is the region between the
2353 * "selection_bound" and "insert" marks. If "selection_bound" and
2354 * "insert" are in the same place, then there is no current selection.
2355 * gtk_text_buffer_get_selection_bounds() is another convenient function
2356 * for handling the selection, if you just want to know whether there's a
2357 * selection and what its bounds are.
2359 * Return value: (transfer none): selection bound mark
2362 gtk_text_buffer_get_selection_bound (GtkTextBuffer *buffer)
2364 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
2366 return _gtk_text_btree_get_selection_bound (get_btree (buffer));
2370 * gtk_text_buffer_get_iter_at_child_anchor:
2371 * @buffer: a #GtkTextBuffer
2372 * @iter: (out): an iterator to be initialized
2373 * @anchor: a child anchor that appears in @buffer
2375 * Obtains the location of @anchor within @buffer.
2378 gtk_text_buffer_get_iter_at_child_anchor (GtkTextBuffer *buffer,
2380 GtkTextChildAnchor *anchor)
2382 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2383 g_return_if_fail (iter != NULL);
2384 g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor));
2385 g_return_if_fail (!gtk_text_child_anchor_get_deleted (anchor));
2387 _gtk_text_btree_get_iter_at_child_anchor (get_btree (buffer),
2393 * gtk_text_buffer_place_cursor:
2394 * @buffer: a #GtkTextBuffer
2395 * @where: where to put the cursor
2397 * This function moves the "insert" and "selection_bound" marks
2398 * simultaneously. If you move them to the same place in two steps
2399 * with gtk_text_buffer_move_mark(), you will temporarily select a
2400 * region in between their old and new locations, which can be pretty
2401 * inefficient since the temporarily-selected region will force stuff
2402 * to be recalculated. This function moves them as a unit, which can
2406 gtk_text_buffer_place_cursor (GtkTextBuffer *buffer,
2407 const GtkTextIter *where)
2409 gtk_text_buffer_select_range (buffer, where, where);
2413 * gtk_text_buffer_select_range:
2414 * @buffer: a #GtkTextBuffer
2415 * @ins: where to put the "insert" mark
2416 * @bound: where to put the "selection_bound" mark
2418 * This function moves the "insert" and "selection_bound" marks
2419 * simultaneously. If you move them in two steps
2420 * with gtk_text_buffer_move_mark(), you will temporarily select a
2421 * region in between their old and new locations, which can be pretty
2422 * inefficient since the temporarily-selected region will force stuff
2423 * to be recalculated. This function moves them as a unit, which can
2429 gtk_text_buffer_select_range (GtkTextBuffer *buffer,
2430 const GtkTextIter *ins,
2431 const GtkTextIter *bound)
2433 GtkTextIter real_ins;
2434 GtkTextIter real_bound;
2436 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2439 real_bound = *bound;
2441 _gtk_text_btree_select_range (get_btree (buffer), &real_ins, &real_bound);
2442 gtk_text_buffer_mark_set (buffer, &real_ins,
2443 gtk_text_buffer_get_insert (buffer));
2444 gtk_text_buffer_mark_set (buffer, &real_bound,
2445 gtk_text_buffer_get_selection_bound (buffer));
2453 * gtk_text_buffer_create_tag:
2454 * @buffer: a #GtkTextBuffer
2455 * @tag_name: (allow-none): name of the new tag, or %NULL
2456 * @first_property_name: (allow-none): name of first property to set, or %NULL
2457 * @Varargs: %NULL-terminated list of property names and values
2459 * Creates a tag and adds it to the tag table for @buffer.
2460 * Equivalent to calling gtk_text_tag_new() and then adding the
2461 * tag to the buffer's tag table. The returned tag is owned by
2462 * the buffer's tag table, so the ref count will be equal to one.
2464 * If @tag_name is %NULL, the tag is anonymous.
2466 * If @tag_name is non-%NULL, a tag called @tag_name must not already
2467 * exist in the tag table for this buffer.
2469 * The @first_property_name argument and subsequent arguments are a list
2470 * of properties to set on the tag, as with g_object_set().
2472 * Return value: (transfer none): a new tag
2475 gtk_text_buffer_create_tag (GtkTextBuffer *buffer,
2476 const gchar *tag_name,
2477 const gchar *first_property_name,
2483 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
2485 tag = gtk_text_tag_new (tag_name);
2487 gtk_text_tag_table_add (get_table (buffer), tag);
2489 if (first_property_name)
2491 va_start (list, first_property_name);
2492 g_object_set_valist (G_OBJECT (tag), first_property_name, list);
2496 g_object_unref (tag);
2502 gtk_text_buffer_real_apply_tag (GtkTextBuffer *buffer,
2504 const GtkTextIter *start,
2505 const GtkTextIter *end)
2507 if (tag->priv->table != buffer->priv->tag_table)
2509 g_warning ("Can only apply tags that are in the tag table for the buffer");
2513 _gtk_text_btree_tag (start, end, tag, TRUE);
2517 gtk_text_buffer_real_remove_tag (GtkTextBuffer *buffer,
2519 const GtkTextIter *start,
2520 const GtkTextIter *end)
2522 if (tag->priv->table != buffer->priv->tag_table)
2524 g_warning ("Can only remove tags that are in the tag table for the buffer");
2528 _gtk_text_btree_tag (start, end, tag, FALSE);
2532 gtk_text_buffer_real_changed (GtkTextBuffer *buffer)
2534 gtk_text_buffer_set_modified (buffer, TRUE);
2538 gtk_text_buffer_real_mark_set (GtkTextBuffer *buffer,
2539 const GtkTextIter *iter,
2542 GtkTextMark *insert;
2544 insert = gtk_text_buffer_get_insert (buffer);
2546 if (mark == insert || mark == gtk_text_buffer_get_selection_bound (buffer))
2548 gboolean has_selection;
2550 update_selection_clipboards (buffer);
2552 has_selection = gtk_text_buffer_get_selection_bounds (buffer,
2556 if (has_selection != buffer->priv->has_selection)
2558 buffer->priv->has_selection = has_selection;
2559 g_object_notify (G_OBJECT (buffer), "has-selection");
2564 g_object_notify (G_OBJECT (buffer), "cursor-position");
2568 gtk_text_buffer_emit_tag (GtkTextBuffer *buffer,
2571 const GtkTextIter *start,
2572 const GtkTextIter *end)
2574 GtkTextIter start_tmp = *start;
2575 GtkTextIter end_tmp = *end;
2577 g_return_if_fail (tag != NULL);
2579 gtk_text_iter_order (&start_tmp, &end_tmp);
2582 g_signal_emit (buffer, signals[APPLY_TAG],
2584 tag, &start_tmp, &end_tmp);
2586 g_signal_emit (buffer, signals[REMOVE_TAG],
2588 tag, &start_tmp, &end_tmp);
2592 * gtk_text_buffer_apply_tag:
2593 * @buffer: a #GtkTextBuffer
2594 * @tag: a #GtkTextTag
2595 * @start: one bound of range to be tagged
2596 * @end: other bound of range to be tagged
2598 * Emits the "apply-tag" signal on @buffer. The default
2599 * handler for the signal applies @tag to the given range.
2600 * @start and @end do not have to be in order.
2603 gtk_text_buffer_apply_tag (GtkTextBuffer *buffer,
2605 const GtkTextIter *start,
2606 const GtkTextIter *end)
2608 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2609 g_return_if_fail (GTK_IS_TEXT_TAG (tag));
2610 g_return_if_fail (start != NULL);
2611 g_return_if_fail (end != NULL);
2612 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
2613 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
2614 g_return_if_fail (tag->priv->table == buffer->priv->tag_table);
2616 gtk_text_buffer_emit_tag (buffer, tag, TRUE, start, end);
2620 * gtk_text_buffer_remove_tag:
2621 * @buffer: a #GtkTextBuffer
2622 * @tag: a #GtkTextTag
2623 * @start: one bound of range to be untagged
2624 * @end: other bound of range to be untagged
2626 * Emits the "remove-tag" signal. The default handler for the signal
2627 * removes all occurrences of @tag from the given range. @start and
2628 * @end don't have to be in order.
2631 gtk_text_buffer_remove_tag (GtkTextBuffer *buffer,
2633 const GtkTextIter *start,
2634 const GtkTextIter *end)
2637 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2638 g_return_if_fail (GTK_IS_TEXT_TAG (tag));
2639 g_return_if_fail (start != NULL);
2640 g_return_if_fail (end != NULL);
2641 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
2642 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
2643 g_return_if_fail (tag->priv->table == buffer->priv->tag_table);
2645 gtk_text_buffer_emit_tag (buffer, tag, FALSE, start, end);
2649 * gtk_text_buffer_apply_tag_by_name:
2650 * @buffer: a #GtkTextBuffer
2651 * @name: name of a named #GtkTextTag
2652 * @start: one bound of range to be tagged
2653 * @end: other bound of range to be tagged
2655 * Calls gtk_text_tag_table_lookup() on the buffer's tag table to
2656 * get a #GtkTextTag, then calls gtk_text_buffer_apply_tag().
2659 gtk_text_buffer_apply_tag_by_name (GtkTextBuffer *buffer,
2661 const GtkTextIter *start,
2662 const GtkTextIter *end)
2666 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2667 g_return_if_fail (name != NULL);
2668 g_return_if_fail (start != NULL);
2669 g_return_if_fail (end != NULL);
2670 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
2671 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
2673 tag = gtk_text_tag_table_lookup (get_table (buffer),
2678 g_warning ("Unknown tag `%s'", name);
2682 gtk_text_buffer_emit_tag (buffer, tag, TRUE, start, end);
2686 * gtk_text_buffer_remove_tag_by_name:
2687 * @buffer: a #GtkTextBuffer
2688 * @name: name of a #GtkTextTag
2689 * @start: one bound of range to be untagged
2690 * @end: other bound of range to be untagged
2692 * Calls gtk_text_tag_table_lookup() on the buffer's tag table to
2693 * get a #GtkTextTag, then calls gtk_text_buffer_remove_tag().
2696 gtk_text_buffer_remove_tag_by_name (GtkTextBuffer *buffer,
2698 const GtkTextIter *start,
2699 const GtkTextIter *end)
2703 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2704 g_return_if_fail (name != NULL);
2705 g_return_if_fail (start != NULL);
2706 g_return_if_fail (end != NULL);
2707 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
2708 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
2710 tag = gtk_text_tag_table_lookup (get_table (buffer),
2715 g_warning ("Unknown tag `%s'", name);
2719 gtk_text_buffer_emit_tag (buffer, tag, FALSE, start, end);
2723 pointer_cmp (gconstpointer a,
2735 * gtk_text_buffer_remove_all_tags:
2736 * @buffer: a #GtkTextBuffer
2737 * @start: one bound of range to be untagged
2738 * @end: other bound of range to be untagged
2740 * Removes all tags in the range between @start and @end. Be careful
2741 * with this function; it could remove tags added in code unrelated to
2742 * the code you're currently writing. That is, using this function is
2743 * probably a bad idea if you have two or more unrelated code sections
2747 gtk_text_buffer_remove_all_tags (GtkTextBuffer *buffer,
2748 const GtkTextIter *start,
2749 const GtkTextIter *end)
2751 GtkTextIter first, second, tmp;
2754 GSList *prev, *next;
2757 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2758 g_return_if_fail (start != NULL);
2759 g_return_if_fail (end != NULL);
2760 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
2761 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
2766 gtk_text_iter_order (&first, &second);
2768 /* Get all tags turned on at the start */
2769 tags = gtk_text_iter_get_tags (&first);
2771 /* Find any that are toggled on within the range */
2773 while (gtk_text_iter_forward_to_tag_toggle (&tmp, NULL))
2778 if (gtk_text_iter_compare (&tmp, &second) >= 0)
2779 break; /* past the end of the range */
2781 toggled = gtk_text_iter_get_toggled_tags (&tmp, TRUE);
2783 /* We could end up with a really big-ass list here.
2786 tmp_list2 = toggled;
2787 while (tmp_list2 != NULL)
2789 tags = g_slist_prepend (tags, tmp_list2->data);
2791 tmp_list2 = g_slist_next (tmp_list2);
2794 g_slist_free (toggled);
2798 tags = g_slist_sort (tags, pointer_cmp);
2800 /* Strip duplicates */
2804 while (tmp_list != NULL)
2806 if (tag == tmp_list->data)
2809 next = tmp_list->next;
2813 tmp_list->next = NULL;
2815 g_slist_free (tmp_list);
2818 /* prev is unchanged */
2822 /* not a duplicate */
2823 tag = GTK_TEXT_TAG (tmp_list->data);
2825 tmp_list = tmp_list->next;
2829 g_slist_foreach (tags, (GFunc) g_object_ref, NULL);
2832 while (tmp_list != NULL)
2834 tag = GTK_TEXT_TAG (tmp_list->data);
2836 gtk_text_buffer_remove_tag (buffer, tag, &first, &second);
2838 tmp_list = tmp_list->next;
2841 g_slist_foreach (tags, (GFunc) g_object_unref, NULL);
2843 g_slist_free (tags);
2848 * Obtain various iterators
2852 * gtk_text_buffer_get_iter_at_line_offset:
2853 * @buffer: a #GtkTextBuffer
2854 * @iter: (out): iterator to initialize
2855 * @line_number: line number counting from 0
2856 * @char_offset: char offset from start of line
2858 * Obtains an iterator pointing to @char_offset within the given
2859 * line. The @char_offset must exist, offsets off the end of the line
2860 * are not allowed. Note <emphasis>characters</emphasis>, not bytes;
2861 * UTF-8 may encode one character as multiple bytes.
2864 gtk_text_buffer_get_iter_at_line_offset (GtkTextBuffer *buffer,
2869 g_return_if_fail (iter != NULL);
2870 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2872 _gtk_text_btree_get_iter_at_line_char (get_btree (buffer),
2873 iter, line_number, char_offset);
2877 * gtk_text_buffer_get_iter_at_line_index:
2878 * @buffer: a #GtkTextBuffer
2879 * @iter: (out): iterator to initialize
2880 * @line_number: line number counting from 0
2881 * @byte_index: byte index from start of line
2883 * Obtains an iterator pointing to @byte_index within the given line.
2884 * @byte_index must be the start of a UTF-8 character, and must not be
2885 * beyond the end of the line. Note <emphasis>bytes</emphasis>, not
2886 * characters; UTF-8 may encode one character as multiple bytes.
2889 gtk_text_buffer_get_iter_at_line_index (GtkTextBuffer *buffer,
2894 g_return_if_fail (iter != NULL);
2895 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2897 _gtk_text_btree_get_iter_at_line_byte (get_btree (buffer),
2898 iter, line_number, byte_index);
2902 * gtk_text_buffer_get_iter_at_line:
2903 * @buffer: a #GtkTextBuffer
2904 * @iter: (out): iterator to initialize
2905 * @line_number: line number counting from 0
2907 * Initializes @iter to the start of the given line.
2910 gtk_text_buffer_get_iter_at_line (GtkTextBuffer *buffer,
2914 g_return_if_fail (iter != NULL);
2915 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2917 gtk_text_buffer_get_iter_at_line_offset (buffer, iter, line_number, 0);
2921 * gtk_text_buffer_get_iter_at_offset:
2922 * @buffer: a #GtkTextBuffer
2923 * @iter: (out): iterator to initialize
2924 * @char_offset: char offset from start of buffer, counting from 0, or -1
2926 * Initializes @iter to a position @char_offset chars from the start
2927 * of the entire buffer. If @char_offset is -1 or greater than the number
2928 * of characters in the buffer, @iter is initialized to the end iterator,
2929 * the iterator one past the last valid character in the buffer.
2932 gtk_text_buffer_get_iter_at_offset (GtkTextBuffer *buffer,
2936 g_return_if_fail (iter != NULL);
2937 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2939 _gtk_text_btree_get_iter_at_char (get_btree (buffer), iter, char_offset);
2943 * gtk_text_buffer_get_start_iter:
2944 * @buffer: a #GtkTextBuffer
2945 * @iter: (out): iterator to initialize
2947 * Initialized @iter with the first position in the text buffer. This
2948 * is the same as using gtk_text_buffer_get_iter_at_offset() to get
2949 * the iter at character offset 0.
2952 gtk_text_buffer_get_start_iter (GtkTextBuffer *buffer,
2955 g_return_if_fail (iter != NULL);
2956 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2958 _gtk_text_btree_get_iter_at_char (get_btree (buffer), iter, 0);
2962 * gtk_text_buffer_get_end_iter:
2963 * @buffer: a #GtkTextBuffer
2964 * @iter: (out): iterator to initialize
2966 * Initializes @iter with the "end iterator," one past the last valid
2967 * character in the text buffer. If dereferenced with
2968 * gtk_text_iter_get_char(), the end iterator has a character value of
2969 * 0. The entire buffer lies in the range from the first position in
2970 * the buffer (call gtk_text_buffer_get_start_iter() to get
2971 * character position 0) to the end iterator.
2974 gtk_text_buffer_get_end_iter (GtkTextBuffer *buffer,
2977 g_return_if_fail (iter != NULL);
2978 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2980 _gtk_text_btree_get_end_iter (get_btree (buffer), iter);
2984 * gtk_text_buffer_get_bounds:
2985 * @buffer: a #GtkTextBuffer
2986 * @start: (out): iterator to initialize with first position in the buffer
2987 * @end: (out): iterator to initialize with the end iterator
2989 * Retrieves the first and last iterators in the buffer, i.e. the
2990 * entire buffer lies within the range [@start,@end).
2993 gtk_text_buffer_get_bounds (GtkTextBuffer *buffer,
2997 g_return_if_fail (start != NULL);
2998 g_return_if_fail (end != NULL);
2999 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
3001 _gtk_text_btree_get_iter_at_char (get_btree (buffer), start, 0);
3002 _gtk_text_btree_get_end_iter (get_btree (buffer), end);
3010 * gtk_text_buffer_get_modified:
3011 * @buffer: a #GtkTextBuffer
3013 * Indicates whether the buffer has been modified since the last call
3014 * to gtk_text_buffer_set_modified() set the modification flag to
3015 * %FALSE. Used for example to enable a "save" function in a text
3018 * Return value: %TRUE if the buffer has been modified
3021 gtk_text_buffer_get_modified (GtkTextBuffer *buffer)
3023 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
3025 return buffer->priv->modified;
3029 * gtk_text_buffer_set_modified:
3030 * @buffer: a #GtkTextBuffer
3031 * @setting: modification flag setting
3033 * Used to keep track of whether the buffer has been modified since the
3034 * last time it was saved. Whenever the buffer is saved to disk, call
3035 * gtk_text_buffer_set_modified (@buffer, FALSE). When the buffer is modified,
3036 * it will automatically toggled on the modified bit again. When the modified
3037 * bit flips, the buffer emits a "modified-changed" signal.
3040 gtk_text_buffer_set_modified (GtkTextBuffer *buffer,
3043 gboolean fixed_setting;
3045 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
3047 fixed_setting = setting != FALSE;
3049 if (buffer->priv->modified == fixed_setting)
3053 buffer->priv->modified = fixed_setting;
3054 g_signal_emit (buffer, signals[MODIFIED_CHANGED], 0);
3059 * gtk_text_buffer_get_has_selection:
3060 * @buffer: a #GtkTextBuffer
3062 * Indicates whether the buffer has some text currently selected.
3064 * Return value: %TRUE if the there is text selected
3069 gtk_text_buffer_get_has_selection (GtkTextBuffer *buffer)
3071 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
3073 return buffer->priv->has_selection;
3078 * Assorted other stuff
3082 * gtk_text_buffer_get_line_count:
3083 * @buffer: a #GtkTextBuffer
3085 * Obtains the number of lines in the buffer. This value is cached, so
3086 * the function is very fast.
3088 * Return value: number of lines in the buffer
3091 gtk_text_buffer_get_line_count (GtkTextBuffer *buffer)
3093 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), 0);
3095 return _gtk_text_btree_line_count (get_btree (buffer));
3099 * gtk_text_buffer_get_char_count:
3100 * @buffer: a #GtkTextBuffer
3102 * Gets the number of characters in the buffer; note that characters
3103 * and bytes are not the same, you can't e.g. expect the contents of
3104 * the buffer in string form to be this many bytes long. The character
3105 * count is cached, so this function is very fast.
3107 * Return value: number of characters in the buffer
3110 gtk_text_buffer_get_char_count (GtkTextBuffer *buffer)
3112 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), 0);
3114 return _gtk_text_btree_char_count (get_btree (buffer));
3117 /* Called when we lose the primary selection.
3120 clipboard_clear_selection_cb (GtkClipboard *clipboard,
3123 /* Move selection_bound to the insertion point */
3125 GtkTextIter selection_bound;
3126 GtkTextBuffer *buffer = GTK_TEXT_BUFFER (data);
3128 gtk_text_buffer_get_iter_at_mark (buffer, &insert,
3129 gtk_text_buffer_get_insert (buffer));
3130 gtk_text_buffer_get_iter_at_mark (buffer, &selection_bound,
3131 gtk_text_buffer_get_selection_bound (buffer));
3133 if (!gtk_text_iter_equal (&insert, &selection_bound))
3134 gtk_text_buffer_move_mark (buffer,
3135 gtk_text_buffer_get_selection_bound (buffer),
3139 /* Called when we have the primary selection and someone else wants our
3140 * data in order to paste it.
3143 clipboard_get_selection_cb (GtkClipboard *clipboard,
3144 GtkSelectionData *selection_data,
3148 GtkTextBuffer *buffer = GTK_TEXT_BUFFER (data);
3149 GtkTextIter start, end;
3151 if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
3153 if (info == GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS)
3155 /* Provide the address of the buffer; this will only be
3156 * used within-process
3158 gtk_selection_data_set (selection_data,
3159 gtk_selection_data_get_target (selection_data),
3164 else if (info == GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT)
3169 str = gtk_text_buffer_serialize (buffer, buffer,
3170 gtk_selection_data_get_target (selection_data),
3171 &start, &end, &len);
3173 gtk_selection_data_set (selection_data,
3174 gtk_selection_data_get_target (selection_data),
3183 str = gtk_text_iter_get_visible_text (&start, &end);
3184 gtk_selection_data_set_text (selection_data, str, -1);
3190 static GtkTextBuffer *
3191 create_clipboard_contents_buffer (GtkTextBuffer *buffer)
3193 GtkTextBuffer *contents;
3195 contents = gtk_text_buffer_new (gtk_text_buffer_get_tag_table (buffer));
3197 g_object_set_data (G_OBJECT (contents), I_("gtk-text-buffer-clipboard-source"),
3199 g_object_set_data (G_OBJECT (contents), I_("gtk-text-buffer-clipboard"),
3200 GINT_TO_POINTER (1));
3202 /* Ref the source buffer as long as the clipboard contents buffer
3203 * exists, because it's needed for serializing the contents buffer.
3204 * See http://bugzilla.gnome.org/show_bug.cgi?id=339195
3206 g_object_ref (buffer);
3207 g_object_weak_ref (G_OBJECT (contents), (GWeakNotify) g_object_unref, buffer);
3212 /* Provide cut/copied data */
3214 clipboard_get_contents_cb (GtkClipboard *clipboard,
3215 GtkSelectionData *selection_data,
3219 GtkTextBuffer *contents = GTK_TEXT_BUFFER (data);
3221 g_assert (contents); /* This should never be called unless we own the clipboard */
3223 if (info == GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS)
3225 /* Provide the address of the clipboard buffer; this will only
3226 * be used within-process. OK to supply a NULL value for contents.
3228 gtk_selection_data_set (selection_data,
3229 gtk_selection_data_get_target (selection_data),
3234 else if (info == GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT)
3236 GtkTextBuffer *clipboard_source_buffer;
3237 GtkTextIter start, end;
3241 clipboard_source_buffer = g_object_get_data (G_OBJECT (contents),
3242 "gtk-text-buffer-clipboard-source");
3244 gtk_text_buffer_get_bounds (contents, &start, &end);
3246 str = gtk_text_buffer_serialize (clipboard_source_buffer, contents,
3247 gtk_selection_data_get_target (selection_data),
3248 &start, &end, &len);
3250 gtk_selection_data_set (selection_data,
3251 gtk_selection_data_get_target (selection_data),
3259 GtkTextIter start, end;
3261 gtk_text_buffer_get_bounds (contents, &start, &end);
3263 str = gtk_text_iter_get_visible_text (&start, &end);
3264 gtk_selection_data_set_text (selection_data, str, -1);
3270 clipboard_clear_contents_cb (GtkClipboard *clipboard,
3273 GtkTextBuffer *contents = GTK_TEXT_BUFFER (data);
3275 g_object_unref (contents);
3279 get_paste_point (GtkTextBuffer *buffer,
3281 gboolean clear_afterward)
3283 GtkTextIter insert_point;
3284 GtkTextMark *paste_point_override;
3286 paste_point_override = gtk_text_buffer_get_mark (buffer,
3287 "gtk_paste_point_override");
3289 if (paste_point_override != NULL)
3291 gtk_text_buffer_get_iter_at_mark (buffer, &insert_point,
3292 paste_point_override);
3293 if (clear_afterward)
3294 gtk_text_buffer_delete_mark (buffer, paste_point_override);
3298 gtk_text_buffer_get_iter_at_mark (buffer, &insert_point,
3299 gtk_text_buffer_get_insert (buffer));
3302 *iter = insert_point;
3306 pre_paste_prep (ClipboardRequest *request_data,
3307 GtkTextIter *insert_point)
3309 GtkTextBuffer *buffer = request_data->buffer;
3311 get_paste_point (buffer, insert_point, TRUE);
3313 /* If we're going to replace the selection, we insert before it to
3314 * avoid messing it up, then we delete the selection after inserting.
3316 if (request_data->replace_selection)
3318 GtkTextIter start, end;
3320 if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
3321 *insert_point = start;
3326 post_paste_cleanup (ClipboardRequest *request_data)
3328 if (request_data->replace_selection)
3330 GtkTextIter start, end;
3332 if (gtk_text_buffer_get_selection_bounds (request_data->buffer,
3335 if (request_data->interactive)
3336 gtk_text_buffer_delete_interactive (request_data->buffer,
3339 request_data->default_editable);
3341 gtk_text_buffer_delete (request_data->buffer, &start, &end);
3347 emit_paste_done (GtkTextBuffer *buffer,
3348 GtkClipboard *clipboard)
3350 g_signal_emit (buffer, signals[PASTE_DONE], 0, clipboard);
3354 free_clipboard_request (ClipboardRequest *request_data)
3356 g_object_unref (request_data->buffer);
3357 g_free (request_data);
3360 /* Called when we request a paste and receive the text data
3363 clipboard_text_received (GtkClipboard *clipboard,
3367 ClipboardRequest *request_data = data;
3368 GtkTextBuffer *buffer = request_data->buffer;
3372 GtkTextIter insert_point;
3374 if (request_data->interactive)
3375 gtk_text_buffer_begin_user_action (buffer);
3377 pre_paste_prep (request_data, &insert_point);
3379 if (request_data->interactive)
3380 gtk_text_buffer_insert_interactive (buffer, &insert_point,
3381 str, -1, request_data->default_editable);
3383 gtk_text_buffer_insert (buffer, &insert_point,
3386 post_paste_cleanup (request_data);
3388 if (request_data->interactive)
3389 gtk_text_buffer_end_user_action (buffer);
3391 emit_paste_done (buffer, clipboard);
3395 /* It may happen that we set a point override but we are not inserting
3396 any text, so we must remove it afterwards */
3397 GtkTextMark *paste_point_override;
3399 paste_point_override = gtk_text_buffer_get_mark (buffer,
3400 "gtk_paste_point_override");
3402 if (paste_point_override != NULL)
3403 gtk_text_buffer_delete_mark (buffer, paste_point_override);
3406 free_clipboard_request (request_data);
3409 static GtkTextBuffer*
3410 selection_data_get_buffer (GtkSelectionData *selection_data,
3411 ClipboardRequest *request_data)
3414 GtkTextBuffer *src_buffer = NULL;
3416 /* If we can get the owner, the selection is in-process */
3417 owner = gdk_selection_owner_get_for_display (gtk_selection_data_get_display (selection_data),
3418 gtk_selection_data_get_selection (selection_data));
3423 if (gdk_window_get_window_type (owner) == GDK_WINDOW_FOREIGN)
3426 if (gtk_selection_data_get_data_type (selection_data) != gdk_atom_intern_static_string ("GTK_TEXT_BUFFER_CONTENTS"))
3429 if (gtk_selection_data_get_length (selection_data) != sizeof (src_buffer))
3432 memcpy (&src_buffer, gtk_selection_data_get_data (selection_data), sizeof (src_buffer));
3434 if (src_buffer == NULL)
3437 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (src_buffer), NULL);
3439 if (gtk_text_buffer_get_tag_table (src_buffer) !=
3440 gtk_text_buffer_get_tag_table (request_data->buffer))
3447 /* These are pretty handy functions; maybe something like them
3448 * should be in the public API. Also, there are other places in this
3449 * file where they could be used.
3452 save_iter (const GtkTextIter *iter,
3453 gboolean left_gravity)
3455 return gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (iter),
3462 restore_iter (const GtkTextIter *iter,
3465 gtk_text_buffer_get_iter_at_mark (gtk_text_mark_get_buffer (save_id),
3466 (GtkTextIter*) iter,
3468 gtk_text_buffer_delete_mark (gtk_text_mark_get_buffer (save_id),
3474 clipboard_rich_text_received (GtkClipboard *clipboard,
3480 ClipboardRequest *request_data = data;
3481 GtkTextIter insert_point;
3482 gboolean retval = TRUE;
3483 GError *error = NULL;
3485 if (text != NULL && length > 0)
3487 pre_paste_prep (request_data, &insert_point);
3489 if (request_data->interactive)
3490 gtk_text_buffer_begin_user_action (request_data->buffer);
3492 if (!request_data->interactive ||
3493 gtk_text_iter_can_insert (&insert_point,
3494 request_data->default_editable))
3496 retval = gtk_text_buffer_deserialize (request_data->buffer,
3497 request_data->buffer,
3506 g_warning ("error pasting: %s\n", error->message);
3507 g_clear_error (&error);
3510 if (request_data->interactive)
3511 gtk_text_buffer_end_user_action (request_data->buffer);
3513 emit_paste_done (request_data->buffer, clipboard);
3517 post_paste_cleanup (request_data);
3522 /* Request the text selection instead */
3523 gtk_clipboard_request_text (clipboard,
3524 clipboard_text_received,
3529 paste_from_buffer (GtkClipboard *clipboard,
3530 ClipboardRequest *request_data,
3531 GtkTextBuffer *src_buffer,
3532 const GtkTextIter *start,
3533 const GtkTextIter *end)
3535 GtkTextIter insert_point;
3536 GtkTextBuffer *buffer = request_data->buffer;
3538 /* We're about to emit a bunch of signals, so be safe */
3539 g_object_ref (src_buffer);
3541 pre_paste_prep (request_data, &insert_point);
3543 if (request_data->interactive)
3544 gtk_text_buffer_begin_user_action (buffer);
3546 if (!gtk_text_iter_equal (start, end))
3548 if (!request_data->interactive ||
3549 (gtk_text_iter_can_insert (&insert_point,
3550 request_data->default_editable)))
3551 gtk_text_buffer_real_insert_range (buffer,
3555 request_data->interactive);
3558 post_paste_cleanup (request_data);
3560 if (request_data->interactive)
3561 gtk_text_buffer_end_user_action (buffer);
3563 emit_paste_done (buffer, clipboard);
3565 g_object_unref (src_buffer);
3567 free_clipboard_request (request_data);
3571 clipboard_clipboard_buffer_received (GtkClipboard *clipboard,
3572 GtkSelectionData *selection_data,
3575 ClipboardRequest *request_data = data;
3576 GtkTextBuffer *src_buffer;
3578 src_buffer = selection_data_get_buffer (selection_data, request_data);
3582 GtkTextIter start, end;
3584 if (g_object_get_data (G_OBJECT (src_buffer), "gtk-text-buffer-clipboard"))
3586 gtk_text_buffer_get_bounds (src_buffer, &start, &end);
3588 paste_from_buffer (clipboard, request_data, src_buffer,
3593 if (gtk_text_buffer_get_selection_bounds (src_buffer, &start, &end))
3594 paste_from_buffer (clipboard, request_data, src_buffer,
3600 if (gtk_clipboard_wait_is_rich_text_available (clipboard,
3601 request_data->buffer))
3603 /* Request rich text */
3604 gtk_clipboard_request_rich_text (clipboard,
3605 request_data->buffer,
3606 clipboard_rich_text_received,
3611 /* Request the text selection instead */
3612 gtk_clipboard_request_text (clipboard,
3613 clipboard_text_received,
3621 GtkClipboard *clipboard;
3623 } SelectionClipboard;
3626 update_selection_clipboards (GtkTextBuffer *buffer)
3628 GtkTextBufferPrivate *priv;
3629 GSList *tmp_list = buffer->priv->selection_clipboards;
3631 priv = buffer->priv;
3633 gtk_text_buffer_get_copy_target_list (buffer);
3640 SelectionClipboard *selection_clipboard = tmp_list->data;
3641 GtkClipboard *clipboard = selection_clipboard->clipboard;
3643 /* Determine whether we have a selection and adjust X selection
3646 if (!gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
3648 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (buffer))
3649 gtk_clipboard_clear (clipboard);
3653 /* Even if we already have the selection, we need to update our
3656 if (!gtk_clipboard_set_with_owner (clipboard,
3657 priv->copy_target_entries,
3658 priv->n_copy_target_entries,
3659 clipboard_get_selection_cb,
3660 clipboard_clear_selection_cb,
3662 clipboard_clear_selection_cb (clipboard, buffer);
3665 tmp_list = tmp_list->next;
3669 static SelectionClipboard *
3670 find_selection_clipboard (GtkTextBuffer *buffer,
3671 GtkClipboard *clipboard)
3673 GSList *tmp_list = buffer->priv->selection_clipboards;
3676 SelectionClipboard *selection_clipboard = tmp_list->data;
3677 if (selection_clipboard->clipboard == clipboard)
3678 return selection_clipboard;
3680 tmp_list = tmp_list->next;
3687 * gtk_text_buffer_add_selection_clipboard:
3688 * @buffer: a #GtkTextBuffer
3689 * @clipboard: a #GtkClipboard
3691 * Adds @clipboard to the list of clipboards in which the selection
3692 * contents of @buffer are available. In most cases, @clipboard will be
3693 * the #GtkClipboard of type %GDK_SELECTION_PRIMARY for a view of @buffer.
3696 gtk_text_buffer_add_selection_clipboard (GtkTextBuffer *buffer,
3697 GtkClipboard *clipboard)
3699 SelectionClipboard *selection_clipboard;
3701 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
3702 g_return_if_fail (clipboard != NULL);
3704 selection_clipboard = find_selection_clipboard (buffer, clipboard);
3705 if (selection_clipboard)
3707 selection_clipboard->ref_count++;
3711 selection_clipboard = g_new (SelectionClipboard, 1);
3713 selection_clipboard->clipboard = clipboard;
3714 selection_clipboard->ref_count = 1;
3716 buffer->priv->selection_clipboards = g_slist_prepend (buffer->priv->selection_clipboards,
3717 selection_clipboard);
3722 * gtk_text_buffer_remove_selection_clipboard:
3723 * @buffer: a #GtkTextBuffer
3724 * @clipboard: a #GtkClipboard added to @buffer by
3725 * gtk_text_buffer_add_selection_clipboard()
3727 * Removes a #GtkClipboard added with
3728 * gtk_text_buffer_add_selection_clipboard().
3731 gtk_text_buffer_remove_selection_clipboard (GtkTextBuffer *buffer,
3732 GtkClipboard *clipboard)
3734 SelectionClipboard *selection_clipboard;
3736 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
3737 g_return_if_fail (clipboard != NULL);
3739 selection_clipboard = find_selection_clipboard (buffer, clipboard);
3740 g_return_if_fail (selection_clipboard != NULL);
3742 selection_clipboard->ref_count--;
3743 if (selection_clipboard->ref_count == 0)
3745 if (gtk_clipboard_get_owner (selection_clipboard->clipboard) == G_OBJECT (buffer))
3746 gtk_clipboard_clear (selection_clipboard->clipboard);
3748 buffer->priv->selection_clipboards = g_slist_remove (buffer->priv->selection_clipboards,
3749 selection_clipboard);
3751 g_free (selection_clipboard);
3756 remove_all_selection_clipboards (GtkTextBuffer *buffer)
3758 GtkTextBufferPrivate *priv = buffer->priv;
3760 g_slist_foreach (priv->selection_clipboards, (GFunc)g_free, NULL);
3761 g_slist_free (priv->selection_clipboards);
3762 priv->selection_clipboards = NULL;
3766 * gtk_text_buffer_paste_clipboard:
3767 * @buffer: a #GtkTextBuffer
3768 * @clipboard: the #GtkClipboard to paste from
3769 * @override_location: (allow-none): location to insert pasted text, or %NULL for
3771 * @default_editable: whether the buffer is editable by default
3773 * Pastes the contents of a clipboard at the insertion point, or
3774 * at @override_location. (Note: pasting is asynchronous, that is,
3775 * we'll ask for the paste data and return, and at some point later
3776 * after the main loop runs, the paste data will be inserted.)
3779 gtk_text_buffer_paste_clipboard (GtkTextBuffer *buffer,
3780 GtkClipboard *clipboard,
3781 GtkTextIter *override_location,
3782 gboolean default_editable)
3784 ClipboardRequest *data = g_new (ClipboardRequest, 1);
3785 GtkTextIter paste_point;
3786 GtkTextIter start, end;
3788 if (override_location != NULL)
3789 gtk_text_buffer_create_mark (buffer,
3790 "gtk_paste_point_override",
3791 override_location, FALSE);
3793 data->buffer = g_object_ref (buffer);
3794 data->interactive = TRUE;
3795 data->default_editable = !!default_editable;
3797 /* When pasting with the cursor inside the selection area, you
3798 * replace the selection with the new text, otherwise, you
3799 * simply insert the new text at the point where the click
3800 * occured, unselecting any selected text. The replace_selection
3801 * flag toggles this behavior.
3803 data->replace_selection = FALSE;
3805 get_paste_point (buffer, &paste_point, FALSE);
3806 if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end) &&
3807 (gtk_text_iter_in_range (&paste_point, &start, &end) ||
3808 gtk_text_iter_equal (&paste_point, &end)))
3809 data->replace_selection = TRUE;
3811 gtk_clipboard_request_contents (clipboard,
3812 gdk_atom_intern_static_string ("GTK_TEXT_BUFFER_CONTENTS"),
3813 clipboard_clipboard_buffer_received, data);
3817 * gtk_text_buffer_delete_selection:
3818 * @buffer: a #GtkTextBuffer
3819 * @interactive: whether the deletion is caused by user interaction
3820 * @default_editable: whether the buffer is editable by default
3822 * Deletes the range between the "insert" and "selection_bound" marks,
3823 * that is, the currently-selected text. If @interactive is %TRUE,
3824 * the editability of the selection will be considered (users can't delete
3827 * Return value: whether there was a non-empty selection to delete
3830 gtk_text_buffer_delete_selection (GtkTextBuffer *buffer,
3831 gboolean interactive,
3832 gboolean default_editable)
3837 if (!gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
3839 return FALSE; /* No selection */
3844 gtk_text_buffer_delete_interactive (buffer, &start, &end, default_editable);
3846 gtk_text_buffer_delete (buffer, &start, &end);
3848 return TRUE; /* We deleted stuff */
3853 * gtk_text_buffer_backspace:
3854 * @buffer: a #GtkTextBuffer
3855 * @iter: a position in @buffer
3856 * @interactive: whether the deletion is caused by user interaction
3857 * @default_editable: whether the buffer is editable by default
3859 * Performs the appropriate action as if the user hit the delete
3860 * key with the cursor at the position specified by @iter. In the
3861 * normal case a single character will be deleted, but when
3862 * combining accents are involved, more than one character can
3863 * be deleted, and when precomposed character and accent combinations
3864 * are involved, less than one character will be deleted.
3866 * Because the buffer is modified, all outstanding iterators become
3867 * invalid after calling this function; however, the @iter will be
3868 * re-initialized to point to the location where text was deleted.
3870 * Return value: %TRUE if the buffer was modified
3875 gtk_text_buffer_backspace (GtkTextBuffer *buffer,
3877 gboolean interactive,
3878 gboolean default_editable)
3880 gchar *cluster_text;
3883 gboolean retval = FALSE;
3884 const PangoLogAttr *attrs;
3886 gboolean backspace_deletes_character;
3888 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
3889 g_return_val_if_fail (iter != NULL, FALSE);
3894 attrs = _gtk_text_buffer_get_line_log_attrs (buffer, &start, NULL);
3896 /* For no good reason, attrs is NULL for the empty last line in
3897 * a buffer. Special case that here. (#156164)
3901 offset = gtk_text_iter_get_line_offset (&start);
3902 backspace_deletes_character = attrs[offset].backspace_deletes_character;
3905 backspace_deletes_character = FALSE;
3907 gtk_text_iter_backward_cursor_position (&start);
3909 if (gtk_text_iter_equal (&start, &end))
3912 cluster_text = gtk_text_iter_get_text (&start, &end);
3915 gtk_text_buffer_begin_user_action (buffer);
3917 if (gtk_text_buffer_delete_interactive (buffer, &start, &end,
3920 /* special case \r\n, since we never want to reinsert \r */
3921 if (backspace_deletes_character && strcmp ("\r\n", cluster_text))
3923 gchar *normalized_text = g_utf8_normalize (cluster_text,
3924 strlen (cluster_text),
3926 glong len = g_utf8_strlen (normalized_text, -1);
3929 gtk_text_buffer_insert_interactive (buffer,
3932 g_utf8_offset_to_pointer (normalized_text, len - 1) - normalized_text,
3935 g_free (normalized_text);
3942 gtk_text_buffer_end_user_action (buffer);
3944 g_free (cluster_text);
3946 /* Revalidate the users iter */
3953 cut_or_copy (GtkTextBuffer *buffer,
3954 GtkClipboard *clipboard,
3955 gboolean delete_region_after,
3956 gboolean interactive,
3957 gboolean default_editable)
3959 GtkTextBufferPrivate *priv;
3961 /* We prefer to cut the selected region between selection_bound and
3962 * insertion point. If that region is empty, then we cut the region
3963 * between the "anchor" and the insertion point (this is for
3964 * C-space and M-w and other Emacs-style copy/yank keys). Note that
3965 * insert and selection_bound are guaranteed to exist, but the
3966 * anchor only exists sometimes.
3971 priv = buffer->priv;
3973 gtk_text_buffer_get_copy_target_list (buffer);
3975 if (!gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
3977 /* Let's try the anchor thing */
3978 GtkTextMark * anchor = gtk_text_buffer_get_mark (buffer, "anchor");
3984 gtk_text_buffer_get_iter_at_mark (buffer, &end, anchor);
3985 gtk_text_iter_order (&start, &end);
3989 if (!gtk_text_iter_equal (&start, &end))
3992 GtkTextBuffer *contents;
3994 contents = create_clipboard_contents_buffer (buffer);
3996 gtk_text_buffer_get_iter_at_offset (contents, &ins, 0);
3998 gtk_text_buffer_insert_range (contents, &ins, &start, &end);
4000 if (!gtk_clipboard_set_with_data (clipboard,
4001 priv->copy_target_entries,
4002 priv->n_copy_target_entries,
4003 clipboard_get_contents_cb,
4004 clipboard_clear_contents_cb,
4006 g_object_unref (contents);
4008 gtk_clipboard_set_can_store (clipboard,
4009 priv->copy_target_entries + 1,
4010 priv->n_copy_target_entries - 1);
4012 if (delete_region_after)
4015 gtk_text_buffer_delete_interactive (buffer, &start, &end,
4018 gtk_text_buffer_delete (buffer, &start, &end);
4024 * gtk_text_buffer_cut_clipboard:
4025 * @buffer: a #GtkTextBuffer
4026 * @clipboard: the #GtkClipboard object to cut to
4027 * @default_editable: default editability of the buffer
4029 * Copies the currently-selected text to a clipboard, then deletes
4030 * said text if it's editable.
4033 gtk_text_buffer_cut_clipboard (GtkTextBuffer *buffer,
4034 GtkClipboard *clipboard,
4035 gboolean default_editable)
4037 gtk_text_buffer_begin_user_action (buffer);
4038 cut_or_copy (buffer, clipboard, TRUE, TRUE, default_editable);
4039 gtk_text_buffer_end_user_action (buffer);
4043 * gtk_text_buffer_copy_clipboard:
4044 * @buffer: a #GtkTextBuffer
4045 * @clipboard: the #GtkClipboard object to copy to
4047 * Copies the currently-selected text to a clipboard.
4050 gtk_text_buffer_copy_clipboard (GtkTextBuffer *buffer,
4051 GtkClipboard *clipboard)
4053 cut_or_copy (buffer, clipboard, FALSE, TRUE, TRUE);
4057 * gtk_text_buffer_get_selection_bounds:
4058 * @buffer: a #GtkTextBuffer a #GtkTextBuffer
4059 * @start: (out): iterator to initialize with selection start
4060 * @end: (out): iterator to initialize with selection end
4062 * Returns %TRUE if some text is selected; places the bounds
4063 * of the selection in @start and @end (if the selection has length 0,
4064 * then @start and @end are filled in with the same value).
4065 * @start and @end will be in ascending order. If @start and @end are
4066 * NULL, then they are not filled in, but the return value still indicates
4067 * whether text is selected.
4069 * Return value: whether the selection has nonzero length
4072 gtk_text_buffer_get_selection_bounds (GtkTextBuffer *buffer,
4076 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
4078 return _gtk_text_btree_get_selection_bounds (get_btree (buffer), start, end);
4082 * gtk_text_buffer_begin_user_action:
4083 * @buffer: a #GtkTextBuffer
4085 * Called to indicate that the buffer operations between here and a
4086 * call to gtk_text_buffer_end_user_action() are part of a single
4087 * user-visible operation. The operations between
4088 * gtk_text_buffer_begin_user_action() and
4089 * gtk_text_buffer_end_user_action() can then be grouped when creating
4090 * an undo stack. #GtkTextBuffer maintains a count of calls to
4091 * gtk_text_buffer_begin_user_action() that have not been closed with
4092 * a call to gtk_text_buffer_end_user_action(), and emits the
4093 * "begin-user-action" and "end-user-action" signals only for the
4094 * outermost pair of calls. This allows you to build user actions
4095 * from other user actions.
4097 * The "interactive" buffer mutation functions, such as
4098 * gtk_text_buffer_insert_interactive(), automatically call begin/end
4099 * user action around the buffer operations they perform, so there's
4100 * no need to add extra calls if you user action consists solely of a
4101 * single call to one of those functions.
4104 gtk_text_buffer_begin_user_action (GtkTextBuffer *buffer)
4106 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
4108 buffer->priv->user_action_count += 1;
4110 if (buffer->priv->user_action_count == 1)
4112 /* Outermost nested user action begin emits the signal */
4113 g_signal_emit (buffer, signals[BEGIN_USER_ACTION], 0);
4118 * gtk_text_buffer_end_user_action:
4119 * @buffer: a #GtkTextBuffer
4121 * Should be paired with a call to gtk_text_buffer_begin_user_action().
4122 * See that function for a full explanation.
4125 gtk_text_buffer_end_user_action (GtkTextBuffer *buffer)
4127 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
4128 g_return_if_fail (buffer->priv->user_action_count > 0);
4130 buffer->priv->user_action_count -= 1;
4132 if (buffer->priv->user_action_count == 0)
4134 /* Ended the outermost-nested user action end, so emit the signal */
4135 g_signal_emit (buffer, signals[END_USER_ACTION], 0);
4140 gtk_text_buffer_free_target_lists (GtkTextBuffer *buffer)
4142 GtkTextBufferPrivate *priv = buffer->priv;
4144 if (priv->copy_target_list)
4146 gtk_target_list_unref (priv->copy_target_list);
4147 priv->copy_target_list = NULL;
4149 gtk_target_table_free (priv->copy_target_entries,
4150 priv->n_copy_target_entries);
4151 priv->copy_target_entries = NULL;
4152 priv->n_copy_target_entries = 0;
4155 if (priv->paste_target_list)
4157 gtk_target_list_unref (priv->paste_target_list);
4158 priv->paste_target_list = NULL;
4160 gtk_target_table_free (priv->paste_target_entries,
4161 priv->n_paste_target_entries);
4162 priv->paste_target_entries = NULL;
4163 priv->n_paste_target_entries = 0;
4167 static GtkTargetList *
4168 gtk_text_buffer_get_target_list (GtkTextBuffer *buffer,
4169 gboolean deserializable,
4170 GtkTargetEntry **entries,
4173 GtkTargetList *target_list;
4175 target_list = gtk_target_list_new (NULL, 0);
4177 gtk_target_list_add (target_list,
4178 gdk_atom_intern_static_string ("GTK_TEXT_BUFFER_CONTENTS"),
4179 GTK_TARGET_SAME_APP,
4180 GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS);
4182 gtk_target_list_add_rich_text_targets (target_list,
4183 GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT,
4187 gtk_target_list_add_text_targets (target_list,
4188 GTK_TEXT_BUFFER_TARGET_INFO_TEXT);
4190 *entries = gtk_target_table_new_from_list (target_list, n_entries);
4196 * gtk_text_buffer_get_copy_target_list:
4197 * @buffer: a #GtkTextBuffer
4199 * This function returns the list of targets this text buffer can
4200 * provide for copying and as DND source. The targets in the list are
4201 * added with %info values from the #GtkTextBufferTargetInfo enum,
4202 * using gtk_target_list_add_rich_text_targets() and
4203 * gtk_target_list_add_text_targets().
4205 * Return value: (transfer none): the #GtkTargetList
4210 gtk_text_buffer_get_copy_target_list (GtkTextBuffer *buffer)
4212 GtkTextBufferPrivate *priv;
4214 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
4216 priv = buffer->priv;
4218 if (! priv->copy_target_list)
4219 priv->copy_target_list =
4220 gtk_text_buffer_get_target_list (buffer, FALSE,
4221 &priv->copy_target_entries,
4222 &priv->n_copy_target_entries);
4224 return priv->copy_target_list;
4228 * gtk_text_buffer_get_paste_target_list:
4229 * @buffer: a #GtkTextBuffer
4231 * This function returns the list of targets this text buffer supports
4232 * for pasting and as DND destination. The targets in the list are
4233 * added with %info values from the #GtkTextBufferTargetInfo enum,
4234 * using gtk_target_list_add_rich_text_targets() and
4235 * gtk_target_list_add_text_targets().
4237 * Return value: (transfer none): the #GtkTargetList
4242 gtk_text_buffer_get_paste_target_list (GtkTextBuffer *buffer)
4244 GtkTextBufferPrivate *priv;
4246 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
4248 priv = buffer->priv;
4250 if (! priv->paste_target_list)
4251 priv->paste_target_list =
4252 gtk_text_buffer_get_target_list (buffer, TRUE,
4253 &priv->paste_target_entries,
4254 &priv->n_paste_target_entries);
4256 return priv->paste_target_list;
4260 * Logical attribute cache
4263 #define ATTR_CACHE_SIZE 2
4265 typedef struct _CacheEntry CacheEntry;
4270 PangoLogAttr *attrs;
4273 struct _GtkTextLogAttrCache
4275 gint chars_changed_stamp;
4276 CacheEntry entries[ATTR_CACHE_SIZE];
4280 free_log_attr_cache (GtkTextLogAttrCache *cache)
4283 while (i < ATTR_CACHE_SIZE)
4285 g_free (cache->entries[i].attrs);
4292 clear_log_attr_cache (GtkTextLogAttrCache *cache)
4295 while (i < ATTR_CACHE_SIZE)
4297 g_free (cache->entries[i].attrs);
4298 cache->entries[i].attrs = NULL;
4303 static PangoLogAttr*
4304 compute_log_attrs (const GtkTextIter *iter,
4310 gint char_len, byte_len;
4311 PangoLogAttr *attrs = NULL;
4316 gtk_text_iter_set_line_offset (&start, 0);
4317 gtk_text_iter_forward_line (&end);
4319 paragraph = gtk_text_iter_get_slice (&start, &end);
4320 char_len = g_utf8_strlen (paragraph, -1);
4321 byte_len = strlen (paragraph);
4323 g_assert (char_len > 0);
4326 *char_lenp = char_len;
4328 attrs = g_new (PangoLogAttr, char_len + 1);
4330 /* FIXME we need to follow PangoLayout and allow different language
4331 * tags within the paragraph
4333 pango_get_log_attrs (paragraph, byte_len, -1,
4334 gtk_text_iter_get_language (&start),
4343 /* The return value from this is valid until you call this a second time.
4346 _gtk_text_buffer_get_line_log_attrs (GtkTextBuffer *buffer,
4347 const GtkTextIter *anywhere_in_line,
4350 GtkTextBufferPrivate *priv;
4352 GtkTextLogAttrCache *cache;
4355 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
4356 g_return_val_if_fail (anywhere_in_line != NULL, NULL);
4358 priv = buffer->priv;
4360 /* special-case for empty last line in buffer */
4361 if (gtk_text_iter_is_end (anywhere_in_line) &&
4362 gtk_text_iter_get_line_offset (anywhere_in_line) == 0)
4369 /* FIXME we also need to recompute log attrs if the language tag at
4370 * the start of a paragraph changes
4373 if (priv->log_attr_cache == NULL)
4375 priv->log_attr_cache = g_new0 (GtkTextLogAttrCache, 1);
4376 priv->log_attr_cache->chars_changed_stamp =
4377 _gtk_text_btree_get_chars_changed_stamp (get_btree (buffer));
4379 else if (priv->log_attr_cache->chars_changed_stamp !=
4380 _gtk_text_btree_get_chars_changed_stamp (get_btree (buffer)))
4382 clear_log_attr_cache (priv->log_attr_cache);
4385 cache = priv->log_attr_cache;
4386 line = gtk_text_iter_get_line (anywhere_in_line);
4389 while (i < ATTR_CACHE_SIZE)
4391 if (cache->entries[i].attrs &&
4392 cache->entries[i].line == line)
4395 *char_len = cache->entries[i].char_len;
4396 return cache->entries[i].attrs;
4401 /* Not in cache; open up the first cache entry */
4402 g_free (cache->entries[ATTR_CACHE_SIZE-1].attrs);
4404 g_memmove (cache->entries + 1, cache->entries,
4405 sizeof (CacheEntry) * (ATTR_CACHE_SIZE - 1));
4407 cache->entries[0].line = line;
4408 cache->entries[0].attrs = compute_log_attrs (anywhere_in_line,
4409 &cache->entries[0].char_len);
4412 *char_len = cache->entries[0].char_len;
4414 return cache->entries[0].attrs;
4418 _gtk_text_buffer_notify_will_remove_tag (GtkTextBuffer *buffer,
4421 /* This removes tag from the buffer, but DOESN'T emit the
4422 * remove-tag signal, because we can't afford to have user
4423 * code messing things up at this point; the tag MUST be removed
4426 if (buffer->priv->btree)
4427 _gtk_text_btree_notify_will_remove_tag (buffer->priv->btree, tag);
4435 _gtk_text_buffer_spew (GtkTextBuffer *buffer)
4437 _gtk_text_btree_spew (get_btree (buffer));