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 "gtkprivate.h"
46 #define GTK_TEXT_BUFFER_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_TEXT_BUFFER, GtkTextBufferPrivate))
48 typedef struct _GtkTextBufferPrivate GtkTextBufferPrivate;
50 struct _GtkTextBufferPrivate
52 GtkTargetList *copy_target_list;
53 GtkTargetEntry *copy_target_entries;
54 gint n_copy_target_entries;
56 GtkTargetList *paste_target_list;
57 GtkTargetEntry *paste_target_entries;
58 gint n_paste_target_entries;
62 typedef struct _ClipboardRequest ClipboardRequest;
64 struct _ClipboardRequest
66 GtkTextBuffer *buffer;
68 gboolean default_editable;
69 gboolean is_clipboard;
70 gboolean replace_selection;
99 PROP_COPY_TARGET_LIST,
100 PROP_PASTE_TARGET_LIST
103 static void gtk_text_buffer_finalize (GObject *object);
105 static void gtk_text_buffer_real_insert_text (GtkTextBuffer *buffer,
109 static void gtk_text_buffer_real_insert_pixbuf (GtkTextBuffer *buffer,
112 static void gtk_text_buffer_real_insert_anchor (GtkTextBuffer *buffer,
114 GtkTextChildAnchor *anchor);
115 static void gtk_text_buffer_real_delete_range (GtkTextBuffer *buffer,
118 static void gtk_text_buffer_real_apply_tag (GtkTextBuffer *buffer,
120 const GtkTextIter *start_char,
121 const GtkTextIter *end_char);
122 static void gtk_text_buffer_real_remove_tag (GtkTextBuffer *buffer,
124 const GtkTextIter *start_char,
125 const GtkTextIter *end_char);
126 static void gtk_text_buffer_real_changed (GtkTextBuffer *buffer);
127 static void gtk_text_buffer_real_mark_set (GtkTextBuffer *buffer,
128 const GtkTextIter *iter,
131 static GtkTextBTree* get_btree (GtkTextBuffer *buffer);
132 static void free_log_attr_cache (GtkTextLogAttrCache *cache);
134 static void remove_all_selection_clipboards (GtkTextBuffer *buffer);
135 static void update_selection_clipboards (GtkTextBuffer *buffer);
137 static GtkTextBuffer *create_clipboard_contents_buffer (GtkTextBuffer *buffer);
139 static void gtk_text_buffer_free_target_lists (GtkTextBuffer *buffer);
141 static guint signals[LAST_SIGNAL] = { 0 };
143 static void gtk_text_buffer_set_property (GObject *object,
147 static void gtk_text_buffer_get_property (GObject *object,
151 static void gtk_text_buffer_notify (GObject *object,
154 G_DEFINE_TYPE (GtkTextBuffer, gtk_text_buffer, G_TYPE_OBJECT)
157 gtk_text_buffer_class_init (GtkTextBufferClass *klass)
159 GObjectClass *object_class = G_OBJECT_CLASS (klass);
161 object_class->finalize = gtk_text_buffer_finalize;
162 object_class->set_property = gtk_text_buffer_set_property;
163 object_class->get_property = gtk_text_buffer_get_property;
164 object_class->notify = gtk_text_buffer_notify;
166 klass->insert_text = gtk_text_buffer_real_insert_text;
167 klass->insert_pixbuf = gtk_text_buffer_real_insert_pixbuf;
168 klass->insert_child_anchor = gtk_text_buffer_real_insert_anchor;
169 klass->delete_range = gtk_text_buffer_real_delete_range;
170 klass->apply_tag = gtk_text_buffer_real_apply_tag;
171 klass->remove_tag = gtk_text_buffer_real_remove_tag;
172 klass->changed = gtk_text_buffer_real_changed;
173 klass->mark_set = gtk_text_buffer_real_mark_set;
176 g_object_class_install_property (object_class,
178 g_param_spec_object ("tag-table",
180 P_("Text Tag Table"),
181 GTK_TYPE_TEXT_TAG_TABLE,
182 GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
184 /* Normal properties*/
187 * GtkTextBuffer:text:
189 * The text content of the buffer. Without child widgets and images,
190 * see gtk_text_buffer_get_text() for more information.
194 g_object_class_install_property (object_class,
196 g_param_spec_string ("text",
198 P_("Current text of the buffer"),
200 GTK_PARAM_READWRITE));
203 * GtkTextBuffer:has-selection:
205 * Whether the buffer has some text currently selected.
209 g_object_class_install_property (object_class,
211 g_param_spec_boolean ("has-selection",
213 P_("Whether the buffer has some text currently selected"),
215 GTK_PARAM_READABLE));
218 * GtkTextBuffer:cursor-position:
220 * The position of the insert mark (as offset from the beginning
221 * of the buffer). It is useful for getting notified when the
226 g_object_class_install_property (object_class,
227 PROP_CURSOR_POSITION,
228 g_param_spec_int ("cursor-position",
229 P_("Cursor position"),
230 P_("The position of the insert mark (as offset from the beginning of the buffer)"),
232 GTK_PARAM_READABLE));
235 * GtkTextBuffer:copy-target-list:
237 * The list of targets this buffer supports for clipboard copying
242 g_object_class_install_property (object_class,
243 PROP_COPY_TARGET_LIST,
244 g_param_spec_boxed ("copy-target-list",
245 P_("Copy target list"),
246 P_("The list of targets this buffer supports for clipboard copying and DND source"),
247 GTK_TYPE_TARGET_LIST,
248 GTK_PARAM_READABLE));
251 * GtkTextBuffer:paste-target-list:
253 * The list of targets this buffer supports for clipboard pasting
254 * and as DND destination.
258 g_object_class_install_property (object_class,
259 PROP_PASTE_TARGET_LIST,
260 g_param_spec_boxed ("paste-target-list",
261 P_("Paste target list"),
262 P_("The list of targets this buffer supports for clipboard pasting and DND destination"),
263 GTK_TYPE_TARGET_LIST,
264 GTK_PARAM_READABLE));
267 * GtkTextBuffer::insert-text:
268 * @textbuffer: the object which received the signal
269 * @location: position to insert @text in @textbuffer
270 * @text: the UTF-8 text to be inserted
271 * @len: length of the inserted text in bytes
273 * The ::insert-text signal is emitted to insert text in a #GtkTextBuffer.
274 * Insertion actually occurs in the default handler.
276 * Note that if your handler runs before the default handler it must not
277 * invalidate the @location iter (or has to revalidate it).
278 * The default signal handler revalidates it to point to the end of the
282 * gtk_text_buffer_insert(),
283 * gtk_text_buffer_insert_range().
285 signals[INSERT_TEXT] =
286 g_signal_new (I_("insert-text"),
287 G_OBJECT_CLASS_TYPE (object_class),
289 G_STRUCT_OFFSET (GtkTextBufferClass, insert_text),
291 _gtk_marshal_VOID__BOXED_STRING_INT,
294 GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
295 G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE,
299 * GtkTextBuffer::insert-pixbuf:
300 * @textbuffer: the object which received the signal
301 * @location: position to insert @pixbuf in @textbuffer
302 * @pixbuf: the #GdkPixbuf to be inserted
304 * The ::insert-pixbuf signal is emitted to insert a #GdkPixbuf
305 * in a #GtkTextBuffer. Insertion actually occurs in the default handler.
307 * Note that if your handler runs before the default handler it must not
308 * invalidate the @location iter (or has to revalidate it).
309 * The default signal handler revalidates it to be placed after the
312 * See also: gtk_text_buffer_insert_pixbuf().
314 signals[INSERT_PIXBUF] =
315 g_signal_new (I_("insert-pixbuf"),
316 G_OBJECT_CLASS_TYPE (object_class),
318 G_STRUCT_OFFSET (GtkTextBufferClass, insert_pixbuf),
320 _gtk_marshal_VOID__BOXED_OBJECT,
323 GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
328 * GtkTextBuffer::insert-child-anchor:
329 * @textbuffer: the object which received the signal
330 * @location: position to insert @anchor in @textbuffer
331 * @anchor: the #GtkTextChildAnchor to be inserted
333 * The ::insert-child-anchor signal is emitted to insert a
334 * #GtkTextChildAnchor in a #GtkTextBuffer.
335 * Insertion actually occurs in the default handler.
337 * Note that if your handler runs before the default handler it must
338 * not invalidate the @location iter (or has to revalidate it).
339 * The default signal handler revalidates it to be placed after the
342 * See also: gtk_text_buffer_insert_child_anchor().
344 signals[INSERT_CHILD_ANCHOR] =
345 g_signal_new (I_("insert-child-anchor"),
346 G_OBJECT_CLASS_TYPE (object_class),
348 G_STRUCT_OFFSET (GtkTextBufferClass, insert_child_anchor),
350 _gtk_marshal_VOID__BOXED_OBJECT,
353 GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
354 GTK_TYPE_TEXT_CHILD_ANCHOR);
357 * GtkTextBuffer::delete-range:
358 * @textbuffer: the object which received the signal
359 * @start: the start of the range to be deleted
360 * @end: the end of the range to be deleted
362 * The ::delete-range signal is emitted to delete a range
363 * from a #GtkTextBuffer.
365 * Note that if your handler runs before the default handler it must not
366 * invalidate the @start and @end iters (or has to revalidate them).
367 * The default signal handler revalidates the @start and @end iters to
368 * both point point to the location where text was deleted. Handlers
369 * which run after the default handler (see g_signal_connect_after())
370 * do not have access to the deleted text.
372 * See also: gtk_text_buffer_delete().
374 signals[DELETE_RANGE] =
375 g_signal_new (I_("delete-range"),
376 G_OBJECT_CLASS_TYPE (object_class),
378 G_STRUCT_OFFSET (GtkTextBufferClass, delete_range),
380 _gtk_marshal_VOID__BOXED_BOXED,
383 GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
384 GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE);
387 * GtkTextBuffer::changed:
388 * @textbuffer: the object which received the signal
390 * The ::changed signal is emitted when the content of a #GtkTextBuffer
394 g_signal_new (I_("changed"),
395 G_OBJECT_CLASS_TYPE (object_class),
397 G_STRUCT_OFFSET (GtkTextBufferClass, changed),
399 _gtk_marshal_VOID__VOID,
404 * GtkTextBuffer::modified-changed:
405 * @textbuffer: the object which received the signal
407 * The ::modified-changed signal is emitted when the modified bit of a
408 * #GtkTextBuffer flips.
411 * gtk_text_buffer_set_modified().
413 signals[MODIFIED_CHANGED] =
414 g_signal_new (I_("modified-changed"),
415 G_OBJECT_CLASS_TYPE (object_class),
417 G_STRUCT_OFFSET (GtkTextBufferClass, modified_changed),
419 _gtk_marshal_VOID__VOID,
424 * GtkTextBuffer::mark-set:
425 * @textbuffer: the object which received the signal
426 * @location: The location of @mark in @textbuffer
427 * @mark: The mark that is set
429 * The ::mark-set signal is emitted as notification
430 * after a #GtkTextMark is set.
433 * gtk_text_buffer_create_mark(),
434 * gtk_text_buffer_move_mark().
437 g_signal_new (I_("mark-set"),
438 G_OBJECT_CLASS_TYPE (object_class),
440 G_STRUCT_OFFSET (GtkTextBufferClass, mark_set),
442 _gtk_marshal_VOID__BOXED_OBJECT,
449 * GtkTextBuffer::mark-deleted:
450 * @textbuffer: the object which received the signal
451 * @mark: The mark that was deleted
453 * The ::mark-deleted signal is emitted as notification
454 * after a #GtkTextMark is deleted.
457 * gtk_text_buffer_delete_mark().
459 signals[MARK_DELETED] =
460 g_signal_new (I_("mark-deleted"),
461 G_OBJECT_CLASS_TYPE (object_class),
463 G_STRUCT_OFFSET (GtkTextBufferClass, mark_deleted),
465 _gtk_marshal_VOID__OBJECT,
471 * GtkTextBuffer::apply-tag:
472 * @textbuffer: the object which received the signal
473 * @tag: the applied tag
474 * @start: the start of the range the tag is applied to
475 * @end: the end of the range the tag is applied to
477 * The ::apply-tag signal is emitted to apply a tag to a
478 * range of text in a #GtkTextBuffer.
479 * Applying actually occurs in the default handler.
481 * Note that if your handler runs before the default handler it must not
482 * invalidate the @start and @end iters (or has to revalidate them).
485 * gtk_text_buffer_apply_tag(),
486 * gtk_text_buffer_insert_with_tags(),
487 * gtk_text_buffer_insert_range().
490 g_signal_new (I_("apply-tag"),
491 G_OBJECT_CLASS_TYPE (object_class),
493 G_STRUCT_OFFSET (GtkTextBufferClass, apply_tag),
495 _gtk_marshal_VOID__OBJECT_BOXED_BOXED,
504 * GtkTextBuffer::remove-tag:
505 * @textbuffer: the object which received the signal
506 * @tag: the tag to be removed
507 * @start: the start of the range the tag is removed from
508 * @end: the end of the range the tag is removed from
510 * The ::remove-tag signal is emitted to remove all occurrences of @tag from
511 * a range of text in a #GtkTextBuffer.
512 * Removal actually occurs in the default handler.
514 * Note that if your handler runs before the default handler it must not
515 * invalidate the @start and @end iters (or has to revalidate them).
518 * gtk_text_buffer_remove_tag().
520 signals[REMOVE_TAG] =
521 g_signal_new (I_("remove-tag"),
522 G_OBJECT_CLASS_TYPE (object_class),
524 G_STRUCT_OFFSET (GtkTextBufferClass, remove_tag),
526 _gtk_marshal_VOID__OBJECT_BOXED_BOXED,
534 * GtkTextBuffer::begin-user-action:
535 * @textbuffer: the object which received the signal
537 * The ::begin-user-action signal is emitted at the beginning of a single
538 * user-visible operation on a #GtkTextBuffer.
541 * gtk_text_buffer_begin_user_action(),
542 * gtk_text_buffer_insert_interactive(),
543 * gtk_text_buffer_insert_range_interactive(),
544 * gtk_text_buffer_delete_interactive(),
545 * gtk_text_buffer_backspace(),
546 * gtk_text_buffer_delete_selection().
548 signals[BEGIN_USER_ACTION] =
549 g_signal_new (I_("begin-user-action"),
550 G_OBJECT_CLASS_TYPE (object_class),
552 G_STRUCT_OFFSET (GtkTextBufferClass, begin_user_action),
554 _gtk_marshal_VOID__VOID,
559 * GtkTextBuffer::end-user-action:
560 * @textbuffer: the object which received the signal
562 * The ::end-user-action signal is emitted at the end of a single
563 * user-visible operation #GtkTextBuffer.
566 * gtk_text_buffer_end_user_action(),
567 * gtk_text_buffer_insert_interactive(),
568 * gtk_text_buffer_insert_range_interactive(),
569 * gtk_text_buffer_delete_interactive(),
570 * gtk_text_buffer_backspace(),
571 * gtk_text_buffer_delete_selection(),
572 * gtk_text_buffer_backspace().
574 signals[END_USER_ACTION] =
575 g_signal_new (I_("end-user-action"),
576 G_OBJECT_CLASS_TYPE (object_class),
578 G_STRUCT_OFFSET (GtkTextBufferClass, end_user_action),
580 _gtk_marshal_VOID__VOID,
584 g_type_class_add_private (object_class, sizeof (GtkTextBufferPrivate));
588 gtk_text_buffer_init (GtkTextBuffer *buffer)
590 buffer->clipboard_contents_buffers = NULL;
591 buffer->tag_table = NULL;
593 /* allow copying of arbiatray stuff in the internal rich text format */
594 gtk_text_buffer_register_serialize_tagset (buffer, NULL);
598 set_table (GtkTextBuffer *buffer, GtkTextTagTable *table)
600 g_return_if_fail (buffer->tag_table == NULL);
604 buffer->tag_table = table;
605 g_object_ref (buffer->tag_table);
606 _gtk_text_tag_table_add_buffer (table, buffer);
610 static GtkTextTagTable*
611 get_table (GtkTextBuffer *buffer)
613 if (buffer->tag_table == NULL)
615 buffer->tag_table = gtk_text_tag_table_new ();
616 _gtk_text_tag_table_add_buffer (buffer->tag_table, buffer);
619 return buffer->tag_table;
623 gtk_text_buffer_set_property (GObject *object,
628 GtkTextBuffer *text_buffer;
630 text_buffer = GTK_TEXT_BUFFER (object);
635 set_table (text_buffer, g_value_get_object (value));
639 gtk_text_buffer_set_text (text_buffer,
640 g_value_get_string (value), -1);
644 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
650 gtk_text_buffer_get_property (GObject *object,
655 GtkTextBuffer *text_buffer;
658 text_buffer = GTK_TEXT_BUFFER (object);
663 g_value_set_object (value, get_table (text_buffer));
668 GtkTextIter start, end;
670 gtk_text_buffer_get_start_iter (text_buffer, &start);
671 gtk_text_buffer_get_end_iter (text_buffer, &end);
673 g_value_take_string (value,
674 gtk_text_buffer_get_text (text_buffer,
675 &start, &end, FALSE));
679 case PROP_HAS_SELECTION:
680 g_value_set_boolean (value, text_buffer->has_selection);
683 case PROP_CURSOR_POSITION:
684 gtk_text_buffer_get_iter_at_mark (text_buffer, &iter,
685 gtk_text_buffer_get_insert (text_buffer));
686 g_value_set_int (value, gtk_text_iter_get_offset (&iter));
689 case PROP_COPY_TARGET_LIST:
690 g_value_set_boxed (value, gtk_text_buffer_get_copy_target_list (text_buffer));
693 case PROP_PASTE_TARGET_LIST:
694 g_value_set_boxed (value, gtk_text_buffer_get_paste_target_list (text_buffer));
698 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
704 gtk_text_buffer_notify (GObject *object,
707 if (!strcmp (pspec->name, "copy-target-list") ||
708 !strcmp (pspec->name, "paste-target-list"))
710 gtk_text_buffer_free_target_lists (GTK_TEXT_BUFFER (object));
715 * gtk_text_buffer_new:
716 * @table: a tag table, or %NULL to create a new one
718 * Creates a new text buffer.
720 * Return value: a new text buffer
723 gtk_text_buffer_new (GtkTextTagTable *table)
725 GtkTextBuffer *text_buffer;
727 text_buffer = g_object_new (GTK_TYPE_TEXT_BUFFER, "tag-table", table, NULL);
733 gtk_text_buffer_finalize (GObject *object)
735 GtkTextBuffer *buffer;
737 buffer = GTK_TEXT_BUFFER (object);
739 remove_all_selection_clipboards (buffer);
741 if (buffer->tag_table)
743 _gtk_text_tag_table_remove_buffer (buffer->tag_table, buffer);
744 g_object_unref (buffer->tag_table);
745 buffer->tag_table = NULL;
750 _gtk_text_btree_unref (buffer->btree);
751 buffer->btree = NULL;
754 if (buffer->log_attr_cache)
755 free_log_attr_cache (buffer->log_attr_cache);
757 buffer->log_attr_cache = NULL;
759 gtk_text_buffer_free_target_lists (buffer);
761 G_OBJECT_CLASS (gtk_text_buffer_parent_class)->finalize (object);
765 get_btree (GtkTextBuffer *buffer)
767 if (buffer->btree == NULL)
768 buffer->btree = _gtk_text_btree_new (gtk_text_buffer_get_tag_table (buffer),
771 return buffer->btree;
775 _gtk_text_buffer_get_btree (GtkTextBuffer *buffer)
777 return get_btree (buffer);
781 * gtk_text_buffer_get_tag_table:
782 * @buffer: a #GtkTextBuffer
784 * Get the #GtkTextTagTable associated with this buffer.
786 * Return value: the buffer's tag table
789 gtk_text_buffer_get_tag_table (GtkTextBuffer *buffer)
791 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
793 return get_table (buffer);
797 * gtk_text_buffer_set_text:
798 * @buffer: a #GtkTextBuffer
799 * @text: UTF-8 text to insert
800 * @len: length of @text in bytes
802 * Deletes current contents of @buffer, and inserts @text instead. If
803 * @len is -1, @text must be nul-terminated. @text must be valid UTF-8.
806 gtk_text_buffer_set_text (GtkTextBuffer *buffer,
810 GtkTextIter start, end;
812 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
813 g_return_if_fail (text != NULL);
818 gtk_text_buffer_get_bounds (buffer, &start, &end);
820 gtk_text_buffer_delete (buffer, &start, &end);
824 gtk_text_buffer_get_iter_at_offset (buffer, &start, 0);
825 gtk_text_buffer_insert (buffer, &start, text, len);
828 g_object_notify (G_OBJECT (buffer), "text");
838 gtk_text_buffer_real_insert_text (GtkTextBuffer *buffer,
843 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
844 g_return_if_fail (iter != NULL);
846 _gtk_text_btree_insert (iter, text, len);
848 g_signal_emit (buffer, signals[CHANGED], 0);
849 g_object_notify (G_OBJECT (buffer), "cursor-position");
853 gtk_text_buffer_emit_insert (GtkTextBuffer *buffer,
858 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
859 g_return_if_fail (iter != NULL);
860 g_return_if_fail (text != NULL);
865 g_return_if_fail (g_utf8_validate (text, len, NULL));
869 g_signal_emit (buffer, signals[INSERT_TEXT], 0,
875 * gtk_text_buffer_insert:
876 * @buffer: a #GtkTextBuffer
877 * @iter: a position in the buffer
878 * @text: UTF-8 format text to insert
879 * @len: length of text in bytes, or -1
881 * Inserts @len bytes of @text at position @iter. If @len is -1,
882 * @text must be nul-terminated and will be inserted in its
883 * entirety. Emits the "insert-text" signal; insertion actually occurs
884 * in the default handler for the signal. @iter is invalidated when
885 * insertion occurs (because the buffer contents change), but the
886 * default signal handler revalidates it to point to the end of the
890 gtk_text_buffer_insert (GtkTextBuffer *buffer,
895 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
896 g_return_if_fail (iter != NULL);
897 g_return_if_fail (text != NULL);
898 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
900 gtk_text_buffer_emit_insert (buffer, iter, text, len);
904 * gtk_text_buffer_insert_at_cursor:
905 * @buffer: a #GtkTextBuffer
906 * @text: some text in UTF-8 format
907 * @len: length of text, in bytes
909 * Simply calls gtk_text_buffer_insert(), using the current
910 * cursor position as the insertion point.
913 gtk_text_buffer_insert_at_cursor (GtkTextBuffer *buffer,
919 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
920 g_return_if_fail (text != NULL);
922 gtk_text_buffer_get_iter_at_mark (buffer, &iter,
923 gtk_text_buffer_get_insert (buffer));
925 gtk_text_buffer_insert (buffer, &iter, text, len);
929 * gtk_text_buffer_insert_interactive:
930 * @buffer: a #GtkTextBuffer
931 * @iter: a position in @buffer
932 * @text: some UTF-8 text
933 * @len: length of text in bytes, or -1
934 * @default_editable: default editability of buffer
936 * Like gtk_text_buffer_insert(), but the insertion will not occur if
937 * @iter is at a non-editable location in the buffer. Usually you
938 * want to prevent insertions at ineditable locations if the insertion
939 * results from a user action (is interactive).
941 * @default_editable indicates the editability of text that doesn't
942 * have a tag affecting editability applied to it. Typically the
943 * result of gtk_text_view_get_editable() is appropriate here.
945 * Return value: whether text was actually inserted
948 gtk_text_buffer_insert_interactive (GtkTextBuffer *buffer,
952 gboolean default_editable)
954 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
955 g_return_val_if_fail (text != NULL, FALSE);
956 g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, FALSE);
958 if (gtk_text_iter_can_insert (iter, default_editable))
960 gtk_text_buffer_begin_user_action (buffer);
961 gtk_text_buffer_emit_insert (buffer, iter, text, len);
962 gtk_text_buffer_end_user_action (buffer);
970 * gtk_text_buffer_insert_interactive_at_cursor:
971 * @buffer: a #GtkTextBuffer
972 * @text: text in UTF-8 format
973 * @len: length of text in bytes, or -1
974 * @default_editable: default editability of buffer
976 * Calls gtk_text_buffer_insert_interactive() at the cursor
979 * @default_editable indicates the editability of text that doesn't
980 * have a tag affecting editability applied to it. Typically the
981 * result of gtk_text_view_get_editable() is appropriate here.
983 * Return value: whether text was actually inserted
986 gtk_text_buffer_insert_interactive_at_cursor (GtkTextBuffer *buffer,
989 gboolean default_editable)
993 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
994 g_return_val_if_fail (text != NULL, FALSE);
996 gtk_text_buffer_get_iter_at_mark (buffer, &iter,
997 gtk_text_buffer_get_insert (buffer));
999 return gtk_text_buffer_insert_interactive (buffer, &iter, text, len,
1004 possibly_not_text (gunichar ch,
1007 return ch == GTK_TEXT_UNKNOWN_CHAR;
1011 insert_text_range (GtkTextBuffer *buffer,
1013 const GtkTextIter *orig_start,
1014 const GtkTextIter *orig_end,
1015 gboolean interactive)
1019 text = gtk_text_iter_get_text (orig_start, orig_end);
1021 gtk_text_buffer_emit_insert (buffer, iter, text, -1);
1026 typedef struct _Range Range;
1029 GtkTextBuffer *buffer;
1030 GtkTextMark *start_mark;
1031 GtkTextMark *end_mark;
1032 GtkTextMark *whole_end_mark;
1033 GtkTextIter *range_start;
1034 GtkTextIter *range_end;
1035 GtkTextIter *whole_end;
1039 save_range (GtkTextIter *range_start,
1040 GtkTextIter *range_end,
1041 GtkTextIter *whole_end)
1045 r = g_new (Range, 1);
1047 r->buffer = gtk_text_iter_get_buffer (range_start);
1048 g_object_ref (r->buffer);
1051 gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (range_start),
1056 gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (range_start),
1062 gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (range_start),
1067 r->range_start = range_start;
1068 r->range_end = range_end;
1069 r->whole_end = whole_end;
1075 restore_range (Range *r)
1077 gtk_text_buffer_get_iter_at_mark (r->buffer,
1081 gtk_text_buffer_get_iter_at_mark (r->buffer,
1085 gtk_text_buffer_get_iter_at_mark (r->buffer,
1089 gtk_text_buffer_delete_mark (r->buffer, r->start_mark);
1090 gtk_text_buffer_delete_mark (r->buffer, r->end_mark);
1091 gtk_text_buffer_delete_mark (r->buffer, r->whole_end_mark);
1093 /* Due to the gravities on the marks, the ordering could have
1094 * gotten mangled; we switch to an empty range in that
1098 if (gtk_text_iter_compare (r->range_start, r->range_end) > 0)
1099 *r->range_start = *r->range_end;
1101 if (gtk_text_iter_compare (r->range_end, r->whole_end) > 0)
1102 *r->range_end = *r->whole_end;
1104 g_object_unref (r->buffer);
1109 insert_range_untagged (GtkTextBuffer *buffer,
1111 const GtkTextIter *orig_start,
1112 const GtkTextIter *orig_end,
1113 gboolean interactive)
1115 GtkTextIter range_start;
1116 GtkTextIter range_end;
1117 GtkTextIter start, end;
1120 if (gtk_text_iter_equal (orig_start, orig_end))
1123 start = *orig_start;
1126 range_start = start;
1131 if (gtk_text_iter_equal (&range_start, &range_end))
1133 /* Figure out how to move forward */
1135 g_assert (gtk_text_iter_compare (&range_end, &end) <= 0);
1137 if (gtk_text_iter_equal (&range_end, &end))
1139 /* nothing left to do */
1142 else if (gtk_text_iter_get_char (&range_end) == GTK_TEXT_UNKNOWN_CHAR)
1144 GdkPixbuf *pixbuf = NULL;
1145 GtkTextChildAnchor *anchor = NULL;
1146 pixbuf = gtk_text_iter_get_pixbuf (&range_end);
1147 anchor = gtk_text_iter_get_child_anchor (&range_end);
1151 r = save_range (&range_start,
1155 gtk_text_buffer_insert_pixbuf (buffer,
1162 gtk_text_iter_forward_char (&range_end);
1164 range_start = range_end;
1168 /* Just skip anchors */
1170 gtk_text_iter_forward_char (&range_end);
1171 range_start = range_end;
1175 /* The GTK_TEXT_UNKNOWN_CHAR was in a text segment, so
1178 gtk_text_iter_forward_find_char (&range_end,
1179 possibly_not_text, NULL,
1182 g_assert (gtk_text_iter_compare (&range_end, &end) <= 0);
1187 /* Text segment starts here, so forward search to
1188 * find its possible endpoint
1190 gtk_text_iter_forward_find_char (&range_end,
1191 possibly_not_text, NULL,
1194 g_assert (gtk_text_iter_compare (&range_end, &end) <= 0);
1199 r = save_range (&range_start,
1203 insert_text_range (buffer,
1212 range_start = range_end;
1218 insert_range_not_inside_self (GtkTextBuffer *buffer,
1220 const GtkTextIter *orig_start,
1221 const GtkTextIter *orig_end,
1222 gboolean interactive)
1224 /* Find each range of uniformly-tagged text, insert it,
1225 * then apply the tags.
1227 GtkTextIter start = *orig_start;
1228 GtkTextIter end = *orig_end;
1229 GtkTextIter range_start;
1230 GtkTextIter range_end;
1232 if (gtk_text_iter_equal (orig_start, orig_end))
1235 gtk_text_iter_order (&start, &end);
1237 range_start = start;
1243 GtkTextIter start_iter;
1248 if (gtk_text_iter_equal (&range_start, &end))
1249 break; /* All done */
1251 g_assert (gtk_text_iter_compare (&range_start, &end) < 0);
1253 gtk_text_iter_forward_to_tag_toggle (&range_end, NULL);
1255 g_assert (!gtk_text_iter_equal (&range_start, &range_end));
1257 /* Clamp to the end iterator */
1258 if (gtk_text_iter_compare (&range_end, &end) > 0)
1261 /* We have a range with unique tags; insert it, and
1264 start_offset = gtk_text_iter_get_offset (iter);
1266 r = save_range (&range_start, &range_end, &end);
1268 insert_range_untagged (buffer, iter, &range_start, &range_end, interactive);
1273 gtk_text_buffer_get_iter_at_offset (buffer, &start_iter, start_offset);
1275 tags = gtk_text_iter_get_tags (&range_start);
1277 while (tmp_list != NULL)
1279 gtk_text_buffer_apply_tag (buffer,
1284 tmp_list = g_slist_next (tmp_list);
1286 g_slist_free (tags);
1288 range_start = range_end;
1293 gtk_text_buffer_real_insert_range (GtkTextBuffer *buffer,
1295 const GtkTextIter *orig_start,
1296 const GtkTextIter *orig_end,
1297 gboolean interactive)
1299 GtkTextBuffer *src_buffer;
1301 /* Find each range of uniformly-tagged text, insert it,
1302 * then apply the tags.
1304 if (gtk_text_iter_equal (orig_start, orig_end))
1308 gtk_text_buffer_begin_user_action (buffer);
1310 src_buffer = gtk_text_iter_get_buffer (orig_start);
1312 if (gtk_text_iter_get_buffer (iter) != src_buffer ||
1313 !gtk_text_iter_in_range (iter, orig_start, orig_end))
1315 insert_range_not_inside_self (buffer, iter, orig_start, orig_end, interactive);
1319 /* If you insert a range into itself, it could loop infinitely
1320 * because the region being copied keeps growing as we insert. So
1321 * we have to separately copy the range before and after
1322 * the insertion point.
1324 GtkTextIter start = *orig_start;
1325 GtkTextIter end = *orig_end;
1326 GtkTextIter range_start;
1327 GtkTextIter range_end;
1331 gtk_text_iter_order (&start, &end);
1333 range_start = start;
1335 first_half = save_range (&range_start, &range_end, &end);
1337 range_start = *iter;
1339 second_half = save_range (&range_start, &range_end, &end);
1341 restore_range (first_half);
1342 insert_range_not_inside_self (buffer, iter, &range_start, &range_end, interactive);
1344 restore_range (second_half);
1345 insert_range_not_inside_self (buffer, iter, &range_start, &range_end, interactive);
1349 gtk_text_buffer_end_user_action (buffer);
1353 * gtk_text_buffer_insert_range:
1354 * @buffer: a #GtkTextBuffer
1355 * @iter: a position in @buffer
1356 * @start: a position in a #GtkTextBuffer
1357 * @end: another position in the same buffer as @start
1359 * Copies text, tags, and pixbufs between @start and @end (the order
1360 * of @start and @end doesn't matter) and inserts the copy at @iter.
1361 * Used instead of simply getting/inserting text because it preserves
1362 * images and tags. If @start and @end are in a different buffer from
1363 * @buffer, the two buffers must share the same tag table.
1365 * Implemented via emissions of the insert_text and apply_tag signals,
1369 gtk_text_buffer_insert_range (GtkTextBuffer *buffer,
1371 const GtkTextIter *start,
1372 const GtkTextIter *end)
1374 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1375 g_return_if_fail (iter != NULL);
1376 g_return_if_fail (start != NULL);
1377 g_return_if_fail (end != NULL);
1378 g_return_if_fail (gtk_text_iter_get_buffer (start) ==
1379 gtk_text_iter_get_buffer (end));
1380 g_return_if_fail (gtk_text_iter_get_buffer (start)->tag_table ==
1382 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
1384 gtk_text_buffer_real_insert_range (buffer, iter, start, end, FALSE);
1388 * gtk_text_buffer_insert_range_interactive:
1389 * @buffer: a #GtkTextBuffer
1390 * @iter: a position in @buffer
1391 * @start: a position in a #GtkTextBuffer
1392 * @end: another position in the same buffer as @start
1393 * @default_editable: default editability of the buffer
1395 * Same as gtk_text_buffer_insert_range(), but does nothing if the
1396 * insertion point isn't editable. The @default_editable parameter
1397 * indicates whether the text is editable at @iter if no tags
1398 * enclosing @iter affect editability. Typically the result of
1399 * gtk_text_view_get_editable() is appropriate here.
1401 * Returns: whether an insertion was possible at @iter
1404 gtk_text_buffer_insert_range_interactive (GtkTextBuffer *buffer,
1406 const GtkTextIter *start,
1407 const GtkTextIter *end,
1408 gboolean default_editable)
1410 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
1411 g_return_val_if_fail (iter != NULL, FALSE);
1412 g_return_val_if_fail (start != NULL, FALSE);
1413 g_return_val_if_fail (end != NULL, FALSE);
1414 g_return_val_if_fail (gtk_text_iter_get_buffer (start) ==
1415 gtk_text_iter_get_buffer (end), FALSE);
1416 g_return_val_if_fail (gtk_text_iter_get_buffer (start)->tag_table ==
1417 buffer->tag_table, FALSE);
1419 if (gtk_text_iter_can_insert (iter, default_editable))
1421 gtk_text_buffer_real_insert_range (buffer, iter, start, end, TRUE);
1429 * gtk_text_buffer_insert_with_tags:
1430 * @buffer: a #GtkTextBuffer
1431 * @iter: an iterator in @buffer
1433 * @len: length of @text, or -1
1434 * @first_tag: first tag to apply to @text
1435 * @Varargs: NULL-terminated list of tags to apply
1437 * Inserts @text into @buffer at @iter, applying the list of tags to
1438 * the newly-inserted text. The last tag specified must be NULL to
1439 * terminate the list. Equivalent to calling gtk_text_buffer_insert(),
1440 * then gtk_text_buffer_apply_tag() on the inserted text;
1441 * gtk_text_buffer_insert_with_tags() is just a convenience function.
1444 gtk_text_buffer_insert_with_tags (GtkTextBuffer *buffer,
1448 GtkTextTag *first_tag,
1456 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1457 g_return_if_fail (iter != NULL);
1458 g_return_if_fail (text != NULL);
1459 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
1461 start_offset = gtk_text_iter_get_offset (iter);
1463 gtk_text_buffer_insert (buffer, iter, text, len);
1465 if (first_tag == NULL)
1468 gtk_text_buffer_get_iter_at_offset (buffer, &start, start_offset);
1470 va_start (args, first_tag);
1474 gtk_text_buffer_apply_tag (buffer, tag, &start, iter);
1476 tag = va_arg (args, GtkTextTag*);
1483 * gtk_text_buffer_insert_with_tags_by_name:
1484 * @buffer: a #GtkTextBuffer
1485 * @iter: position in @buffer
1487 * @len: length of @text, or -1
1488 * @first_tag_name: name of a tag to apply to @text
1489 * @Varargs: more tag names
1491 * Same as gtk_text_buffer_insert_with_tags(), but allows you
1492 * to pass in tag names instead of tag objects.
1495 gtk_text_buffer_insert_with_tags_by_name (GtkTextBuffer *buffer,
1499 const gchar *first_tag_name,
1505 const gchar *tag_name;
1507 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1508 g_return_if_fail (iter != NULL);
1509 g_return_if_fail (text != NULL);
1510 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
1512 start_offset = gtk_text_iter_get_offset (iter);
1514 gtk_text_buffer_insert (buffer, iter, text, len);
1516 if (first_tag_name == NULL)
1519 gtk_text_buffer_get_iter_at_offset (buffer, &start, start_offset);
1521 va_start (args, first_tag_name);
1522 tag_name = first_tag_name;
1527 tag = gtk_text_tag_table_lookup (buffer->tag_table,
1532 g_warning ("%s: no tag with name '%s'!", G_STRLOC, tag_name);
1536 gtk_text_buffer_apply_tag (buffer, tag, &start, iter);
1538 tag_name = va_arg (args, const gchar*);
1550 gtk_text_buffer_real_delete_range (GtkTextBuffer *buffer,
1554 gboolean has_selection;
1556 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1557 g_return_if_fail (start != NULL);
1558 g_return_if_fail (end != NULL);
1560 _gtk_text_btree_delete (start, end);
1562 /* may have deleted the selection... */
1563 update_selection_clipboards (buffer);
1565 has_selection = gtk_text_buffer_get_selection_bounds (buffer, NULL, NULL);
1566 if (has_selection != buffer->has_selection)
1568 buffer->has_selection = has_selection;
1569 g_object_notify (G_OBJECT (buffer), "has-selection");
1572 g_signal_emit (buffer, signals[CHANGED], 0);
1573 g_object_notify (G_OBJECT (buffer), "cursor-position");
1577 gtk_text_buffer_emit_delete (GtkTextBuffer *buffer,
1581 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1582 g_return_if_fail (start != NULL);
1583 g_return_if_fail (end != NULL);
1585 if (gtk_text_iter_equal (start, end))
1588 gtk_text_iter_order (start, end);
1590 g_signal_emit (buffer,
1591 signals[DELETE_RANGE],
1597 * gtk_text_buffer_delete:
1598 * @buffer: a #GtkTextBuffer
1599 * @start: a position in @buffer
1600 * @end: another position in @buffer
1602 * Deletes text between @start and @end. The order of @start and @end
1603 * is not actually relevant; gtk_text_buffer_delete() will reorder
1604 * them. This function actually emits the "delete-range" signal, and
1605 * the default handler of that signal deletes the text. Because the
1606 * buffer is modified, all outstanding iterators become invalid after
1607 * calling this function; however, the @start and @end will be
1608 * re-initialized to point to the location where text was deleted.
1611 gtk_text_buffer_delete (GtkTextBuffer *buffer,
1615 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1616 g_return_if_fail (start != NULL);
1617 g_return_if_fail (end != NULL);
1618 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
1619 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
1621 gtk_text_buffer_emit_delete (buffer, start, end);
1625 * gtk_text_buffer_delete_interactive:
1626 * @buffer: a #GtkTextBuffer
1627 * @start_iter: start of range to delete
1628 * @end_iter: end of range
1629 * @default_editable: whether the buffer is editable by default
1631 * Deletes all <emphasis>editable</emphasis> text in the given range.
1632 * Calls gtk_text_buffer_delete() for each editable sub-range of
1633 * [@start,@end). @start and @end are revalidated to point to
1634 * the location of the last deleted range, or left untouched if
1635 * no text was deleted.
1637 * Return value: whether some text was actually deleted
1640 gtk_text_buffer_delete_interactive (GtkTextBuffer *buffer,
1641 GtkTextIter *start_iter,
1642 GtkTextIter *end_iter,
1643 gboolean default_editable)
1645 GtkTextMark *end_mark;
1646 GtkTextMark *start_mark;
1648 gboolean current_state;
1649 gboolean deleted_stuff = FALSE;
1651 /* Delete all editable text in the range start_iter, end_iter */
1653 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
1654 g_return_val_if_fail (start_iter != NULL, FALSE);
1655 g_return_val_if_fail (end_iter != NULL, FALSE);
1656 g_return_val_if_fail (gtk_text_iter_get_buffer (start_iter) == buffer, FALSE);
1657 g_return_val_if_fail (gtk_text_iter_get_buffer (end_iter) == buffer, FALSE);
1660 gtk_text_buffer_begin_user_action (buffer);
1662 gtk_text_iter_order (start_iter, end_iter);
1664 start_mark = gtk_text_buffer_create_mark (buffer, NULL,
1666 end_mark = gtk_text_buffer_create_mark (buffer, NULL,
1669 gtk_text_buffer_get_iter_at_mark (buffer, &iter, start_mark);
1671 current_state = gtk_text_iter_editable (&iter, default_editable);
1676 gboolean done = FALSE;
1679 gtk_text_iter_forward_to_tag_toggle (&iter, NULL);
1681 gtk_text_buffer_get_iter_at_mark (buffer, &end, end_mark);
1683 if (gtk_text_iter_compare (&iter, &end) >= 0)
1686 iter = end; /* clamp to the last boundary */
1689 new_state = gtk_text_iter_editable (&iter, default_editable);
1691 if (current_state == new_state)
1697 /* We're ending an editable region. Delete said region. */
1700 gtk_text_buffer_get_iter_at_mark (buffer, &start, start_mark);
1702 gtk_text_buffer_emit_delete (buffer, &start, &iter);
1704 deleted_stuff = TRUE;
1706 /* revalidate user's iterators. */
1707 *start_iter = start;
1717 if (current_state && !new_state)
1719 /* End of an editable region. Delete it. */
1722 gtk_text_buffer_get_iter_at_mark (buffer, &start, start_mark);
1724 gtk_text_buffer_emit_delete (buffer, &start, &iter);
1726 /* It's more robust to ask for the state again then to assume that
1727 * we're on the next not-editable segment. We don't know what the
1728 * ::delete-range handler did.... maybe it deleted the following
1729 * not-editable segment because it was associated with the editable
1732 current_state = gtk_text_iter_editable (&iter, default_editable);
1733 deleted_stuff = TRUE;
1735 /* revalidate user's iterators. */
1736 *start_iter = start;
1741 /* We are at the start of an editable region. We won't be deleting
1742 * the previous region. Move start mark to start of this region.
1745 g_assert (!current_state && new_state);
1747 gtk_text_buffer_move_mark (buffer, start_mark, &iter);
1749 current_state = TRUE;
1756 gtk_text_buffer_delete_mark (buffer, start_mark);
1757 gtk_text_buffer_delete_mark (buffer, end_mark);
1759 gtk_text_buffer_end_user_action (buffer);
1761 return deleted_stuff;
1765 * Extracting textual buffer contents
1769 * gtk_text_buffer_get_text:
1770 * @buffer: a #GtkTextBuffer
1771 * @start: start of a range
1772 * @end: end of a range
1773 * @include_hidden_chars: whether to include invisible text
1775 * Returns the text in the range [@start,@end). Excludes undisplayed
1776 * text (text marked with tags that set the invisibility attribute) if
1777 * @include_hidden_chars is %FALSE. Does not include characters
1778 * representing embedded images, so byte and character indexes into
1779 * the returned string do <emphasis>not</emphasis> correspond to byte
1780 * and character indexes into the buffer. Contrast with
1781 * gtk_text_buffer_get_slice().
1783 * Return value: an allocated UTF-8 string
1786 gtk_text_buffer_get_text (GtkTextBuffer *buffer,
1787 const GtkTextIter *start,
1788 const GtkTextIter *end,
1789 gboolean include_hidden_chars)
1791 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
1792 g_return_val_if_fail (start != NULL, NULL);
1793 g_return_val_if_fail (end != NULL, NULL);
1794 g_return_val_if_fail (gtk_text_iter_get_buffer (start) == buffer, NULL);
1795 g_return_val_if_fail (gtk_text_iter_get_buffer (end) == buffer, NULL);
1797 if (include_hidden_chars)
1798 return gtk_text_iter_get_text (start, end);
1800 return gtk_text_iter_get_visible_text (start, end);
1804 * gtk_text_buffer_get_slice:
1805 * @buffer: a #GtkTextBuffer
1806 * @start: start of a range
1807 * @end: end of a range
1808 * @include_hidden_chars: whether to include invisible text
1810 * Returns the text in the range [@start,@end). Excludes undisplayed
1811 * text (text marked with tags that set the invisibility attribute) if
1812 * @include_hidden_chars is %FALSE. The returned string includes a
1813 * 0xFFFC character whenever the buffer contains
1814 * embedded images, so byte and character indexes into
1815 * the returned string <emphasis>do</emphasis> correspond to byte
1816 * and character indexes into the buffer. Contrast with
1817 * gtk_text_buffer_get_text(). Note that 0xFFFC can occur in normal
1818 * text as well, so it is not a reliable indicator that a pixbuf or
1819 * widget is in the buffer.
1821 * Return value: an allocated UTF-8 string
1824 gtk_text_buffer_get_slice (GtkTextBuffer *buffer,
1825 const GtkTextIter *start,
1826 const GtkTextIter *end,
1827 gboolean include_hidden_chars)
1829 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
1830 g_return_val_if_fail (start != NULL, NULL);
1831 g_return_val_if_fail (end != NULL, NULL);
1832 g_return_val_if_fail (gtk_text_iter_get_buffer (start) == buffer, NULL);
1833 g_return_val_if_fail (gtk_text_iter_get_buffer (end) == buffer, NULL);
1835 if (include_hidden_chars)
1836 return gtk_text_iter_get_slice (start, end);
1838 return gtk_text_iter_get_visible_slice (start, end);
1846 gtk_text_buffer_real_insert_pixbuf (GtkTextBuffer *buffer,
1850 _gtk_text_btree_insert_pixbuf (iter, pixbuf);
1852 g_signal_emit (buffer, signals[CHANGED], 0);
1856 * gtk_text_buffer_insert_pixbuf:
1857 * @buffer: a #GtkTextBuffer
1858 * @iter: location to insert the pixbuf
1859 * @pixbuf: a #GdkPixbuf
1861 * Inserts an image into the text buffer at @iter. The image will be
1862 * counted as one character in character counts, and when obtaining
1863 * the buffer contents as a string, will be represented by the Unicode
1864 * "object replacement character" 0xFFFC. Note that the "slice"
1865 * variants for obtaining portions of the buffer as a string include
1866 * this character for pixbufs, but the "text" variants do
1867 * not. e.g. see gtk_text_buffer_get_slice() and
1868 * gtk_text_buffer_get_text().
1871 gtk_text_buffer_insert_pixbuf (GtkTextBuffer *buffer,
1875 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1876 g_return_if_fail (iter != NULL);
1877 g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
1878 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
1880 g_signal_emit (buffer, signals[INSERT_PIXBUF], 0,
1890 gtk_text_buffer_real_insert_anchor (GtkTextBuffer *buffer,
1892 GtkTextChildAnchor *anchor)
1894 _gtk_text_btree_insert_child_anchor (iter, anchor);
1896 g_signal_emit (buffer, signals[CHANGED], 0);
1900 * gtk_text_buffer_insert_child_anchor:
1901 * @buffer: a #GtkTextBuffer
1902 * @iter: location to insert the anchor
1903 * @anchor: a #GtkTextChildAnchor
1905 * Inserts a child widget anchor into the text buffer at @iter. The
1906 * anchor will be counted as one character in character counts, and
1907 * when obtaining the buffer contents as a string, will be represented
1908 * by the Unicode "object replacement character" 0xFFFC. Note that the
1909 * "slice" variants for obtaining portions of the buffer as a string
1910 * include this character for child anchors, but the "text" variants do
1911 * not. E.g. see gtk_text_buffer_get_slice() and
1912 * gtk_text_buffer_get_text(). Consider
1913 * gtk_text_buffer_create_child_anchor() as a more convenient
1914 * alternative to this function. The buffer will add a reference to
1915 * the anchor, so you can unref it after insertion.
1918 gtk_text_buffer_insert_child_anchor (GtkTextBuffer *buffer,
1920 GtkTextChildAnchor *anchor)
1922 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
1923 g_return_if_fail (iter != NULL);
1924 g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor));
1925 g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
1927 g_signal_emit (buffer, signals[INSERT_CHILD_ANCHOR], 0,
1932 * gtk_text_buffer_create_child_anchor:
1933 * @buffer: a #GtkTextBuffer
1934 * @iter: location in the buffer
1936 * This is a convenience function which simply creates a child anchor
1937 * with gtk_text_child_anchor_new() and inserts it into the buffer
1938 * with gtk_text_buffer_insert_child_anchor(). The new anchor is
1939 * owned by the buffer; no reference count is returned to
1940 * the caller of gtk_text_buffer_create_child_anchor().
1942 * Return value: the created child anchor
1945 gtk_text_buffer_create_child_anchor (GtkTextBuffer *buffer,
1948 GtkTextChildAnchor *anchor;
1950 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
1951 g_return_val_if_fail (iter != NULL, NULL);
1952 g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, NULL);
1954 anchor = gtk_text_child_anchor_new ();
1956 gtk_text_buffer_insert_child_anchor (buffer, iter, anchor);
1958 g_object_unref (anchor);
1968 gtk_text_buffer_mark_set (GtkTextBuffer *buffer,
1969 const GtkTextIter *location,
1972 /* IMO this should NOT work like insert_text and delete_range,
1973 * where the real action happens in the default handler.
1975 * The reason is that the default handler would be _required_,
1976 * i.e. the whole widget would start breaking and segfaulting if the
1977 * default handler didn't get run. So you can't really override the
1978 * default handler or stop the emission; that is, this signal is
1979 * purely for notification, and not to allow users to modify the
1983 g_object_ref (mark);
1985 g_signal_emit (buffer,
1991 g_object_unref (mark);
1995 * gtk_text_buffer_set_mark:
1996 * @buffer: a #GtkTextBuffer
1997 * @mark_name: name of the mark
1998 * @iter: location for the mark
1999 * @left_gravity: if the mark is created by this function, gravity for
2001 * @should_exist: if %TRUE, warn if the mark does not exist, and return
2004 * Move the mark to the given position, if not @should_exist,
2007 * Return value: mark
2010 gtk_text_buffer_set_mark (GtkTextBuffer *buffer,
2011 GtkTextMark *existing_mark,
2012 const gchar *mark_name,
2013 const GtkTextIter *iter,
2014 gboolean left_gravity,
2015 gboolean should_exist)
2017 GtkTextIter location;
2020 g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, NULL);
2022 mark = _gtk_text_btree_set_mark (get_btree (buffer),
2029 _gtk_text_btree_get_iter_at_mark (get_btree (buffer),
2033 gtk_text_buffer_mark_set (buffer, &location, mark);
2039 * gtk_text_buffer_create_mark:
2040 * @buffer: a #GtkTextBuffer
2041 * @mark_name: name for mark, or %NULL
2042 * @where: location to place mark
2043 * @left_gravity: whether the mark has left gravity
2045 * Creates a mark at position @where. If @mark_name is %NULL, the mark
2046 * is anonymous; otherwise, the mark can be retrieved by name using
2047 * gtk_text_buffer_get_mark(). If a mark has left gravity, and text is
2048 * inserted at the mark's current location, the mark will be moved to
2049 * the left of the newly-inserted text. If the mark has right gravity
2050 * (@left_gravity = %FALSE), the mark will end up on the right of
2051 * newly-inserted text. The standard left-to-right cursor is a mark
2052 * with right gravity (when you type, the cursor stays on the right
2053 * side of the text you're typing).
2055 * The caller of this function does <emphasis>not</emphasis> own a
2056 * reference to the returned #GtkTextMark, so you can ignore the
2057 * return value if you like. Marks are owned by the buffer and go
2058 * away when the buffer does.
2060 * Emits the "mark-set" signal as notification of the mark's initial
2063 * Return value: the new #GtkTextMark object
2066 gtk_text_buffer_create_mark (GtkTextBuffer *buffer,
2067 const gchar *mark_name,
2068 const GtkTextIter *where,
2069 gboolean left_gravity)
2071 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
2073 return gtk_text_buffer_set_mark (buffer, NULL, mark_name, where,
2074 left_gravity, FALSE);
2078 * gtk_text_buffer_add_mark:
2079 * @buffer: a #GtkTextBuffer
2080 * @mark: the mark to add
2081 * @where: location to place mark
2083 * Adds the mark at position @where. The mark must not be added to
2084 * another buffer, and if its name is not %NULL then there must not
2085 * be another mark in the buffer with the same name.
2087 * Emits the "mark-set" signal as notification of the mark's initial
2093 gtk_text_buffer_add_mark (GtkTextBuffer *buffer,
2095 const GtkTextIter *where)
2099 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2100 g_return_if_fail (GTK_IS_TEXT_MARK (mark));
2101 g_return_if_fail (where != NULL);
2102 g_return_if_fail (gtk_text_mark_get_buffer (mark) == NULL);
2104 name = gtk_text_mark_get_name (mark);
2106 if (name != NULL && gtk_text_buffer_get_mark (buffer, name) != NULL)
2108 g_critical ("Mark %s already exists in the buffer", name);
2112 gtk_text_buffer_set_mark (buffer, mark, NULL, where, FALSE, FALSE);
2116 * gtk_text_buffer_move_mark:
2117 * @buffer: a #GtkTextBuffer
2118 * @mark: a #GtkTextMark
2119 * @where: new location for @mark in @buffer
2121 * Moves @mark to the new location @where. Emits the "mark-set" signal
2122 * as notification of the move.
2125 gtk_text_buffer_move_mark (GtkTextBuffer *buffer,
2127 const GtkTextIter *where)
2129 g_return_if_fail (GTK_IS_TEXT_MARK (mark));
2130 g_return_if_fail (!gtk_text_mark_get_deleted (mark));
2131 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2133 gtk_text_buffer_set_mark (buffer, mark, NULL, where, FALSE, TRUE);
2137 * gtk_text_buffer_get_iter_at_mark:
2138 * @buffer: a #GtkTextBuffer
2139 * @iter: iterator to initialize
2140 * @mark: a #GtkTextMark in @buffer
2142 * Initializes @iter with the current position of @mark.
2145 gtk_text_buffer_get_iter_at_mark (GtkTextBuffer *buffer,
2149 g_return_if_fail (GTK_IS_TEXT_MARK (mark));
2150 g_return_if_fail (!gtk_text_mark_get_deleted (mark));
2151 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2153 _gtk_text_btree_get_iter_at_mark (get_btree (buffer),
2159 * gtk_text_buffer_delete_mark:
2160 * @buffer: a #GtkTextBuffer
2161 * @mark: a #GtkTextMark in @buffer
2163 * Deletes @mark, so that it's no longer located anywhere in the
2164 * buffer. Removes the reference the buffer holds to the mark, so if
2165 * you haven't called g_object_ref() on the mark, it will be freed. Even
2166 * if the mark isn't freed, most operations on @mark become
2167 * invalid, until it gets added to a buffer again with
2168 * gtk_text_buffer_add_mark(). Use gtk_text_mark_get_deleted() to
2169 * find out if a mark has been removed from its buffer.
2170 * The "mark-deleted" signal will be emitted as notification after
2171 * the mark is deleted.
2174 gtk_text_buffer_delete_mark (GtkTextBuffer *buffer,
2177 g_return_if_fail (GTK_IS_TEXT_MARK (mark));
2178 g_return_if_fail (!gtk_text_mark_get_deleted (mark));
2179 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2181 g_object_ref (mark);
2183 _gtk_text_btree_remove_mark (get_btree (buffer), mark);
2185 /* See rationale above for MARK_SET on why we emit this after
2186 * removing the mark, rather than removing the mark in a default
2189 g_signal_emit (buffer, signals[MARK_DELETED],
2193 g_object_unref (mark);
2197 * gtk_text_buffer_get_mark:
2198 * @buffer: a #GtkTextBuffer
2199 * @name: a mark name
2201 * Returns the mark named @name in buffer @buffer, or %NULL if no such
2202 * mark exists in the buffer.
2204 * Return value: a #GtkTextMark, or %NULL
2207 gtk_text_buffer_get_mark (GtkTextBuffer *buffer,
2212 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
2213 g_return_val_if_fail (name != NULL, NULL);
2215 mark = _gtk_text_btree_get_mark_by_name (get_btree (buffer), name);
2221 * gtk_text_buffer_move_mark_by_name:
2222 * @buffer: a #GtkTextBuffer
2223 * @name: name of a mark
2224 * @where: new location for mark
2226 * Moves the mark named @name (which must exist) to location @where.
2227 * See gtk_text_buffer_move_mark() for details.
2230 gtk_text_buffer_move_mark_by_name (GtkTextBuffer *buffer,
2232 const GtkTextIter *where)
2236 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2237 g_return_if_fail (name != NULL);
2239 mark = _gtk_text_btree_get_mark_by_name (get_btree (buffer), name);
2243 g_warning ("%s: no mark named '%s'", G_STRLOC, name);
2247 gtk_text_buffer_move_mark (buffer, mark, where);
2251 * gtk_text_buffer_delete_mark_by_name:
2252 * @buffer: a #GtkTextBuffer
2253 * @name: name of a mark in @buffer
2255 * Deletes the mark named @name; the mark must exist. See
2256 * gtk_text_buffer_delete_mark() for details.
2259 gtk_text_buffer_delete_mark_by_name (GtkTextBuffer *buffer,
2264 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2265 g_return_if_fail (name != NULL);
2267 mark = _gtk_text_btree_get_mark_by_name (get_btree (buffer), name);
2271 g_warning ("%s: no mark named '%s'", G_STRLOC, name);
2275 gtk_text_buffer_delete_mark (buffer, mark);
2279 * gtk_text_buffer_get_insert:
2280 * @buffer: a #GtkTextBuffer
2282 * Returns the mark that represents the cursor (insertion point).
2283 * Equivalent to calling gtk_text_buffer_get_mark() to get the mark
2284 * named "insert", but very slightly more efficient, and involves less
2287 * Return value: insertion point mark
2290 gtk_text_buffer_get_insert (GtkTextBuffer *buffer)
2292 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
2294 return _gtk_text_btree_get_insert (get_btree (buffer));
2298 * gtk_text_buffer_get_selection_bound:
2299 * @buffer: a #GtkTextBuffer
2301 * Returns the mark that represents the selection bound. Equivalent
2302 * to calling gtk_text_buffer_get_mark() to get the mark named
2303 * "selection_bound", but very slightly more efficient, and involves
2306 * The currently-selected text in @buffer is the region between the
2307 * "selection_bound" and "insert" marks. If "selection_bound" and
2308 * "insert" are in the same place, then there is no current selection.
2309 * gtk_text_buffer_get_selection_bounds() is another convenient function
2310 * for handling the selection, if you just want to know whether there's a
2311 * selection and what its bounds are.
2313 * Return value: selection bound mark
2316 gtk_text_buffer_get_selection_bound (GtkTextBuffer *buffer)
2318 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
2320 return _gtk_text_btree_get_selection_bound (get_btree (buffer));
2324 * gtk_text_buffer_get_iter_at_child_anchor:
2325 * @buffer: a #GtkTextBuffer
2326 * @iter: an iterator to be initialized
2327 * @anchor: a child anchor that appears in @buffer
2329 * Obtains the location of @anchor within @buffer.
2332 gtk_text_buffer_get_iter_at_child_anchor (GtkTextBuffer *buffer,
2334 GtkTextChildAnchor *anchor)
2336 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2337 g_return_if_fail (iter != NULL);
2338 g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor));
2339 g_return_if_fail (!gtk_text_child_anchor_get_deleted (anchor));
2341 _gtk_text_btree_get_iter_at_child_anchor (get_btree (buffer),
2347 * gtk_text_buffer_place_cursor:
2348 * @buffer: a #GtkTextBuffer
2349 * @where: where to put the cursor
2351 * This function moves the "insert" and "selection_bound" marks
2352 * simultaneously. If you move them to the same place in two steps
2353 * with gtk_text_buffer_move_mark(), you will temporarily select a
2354 * region in between their old and new locations, which can be pretty
2355 * inefficient since the temporarily-selected region will force stuff
2356 * to be recalculated. This function moves them as a unit, which can
2360 gtk_text_buffer_place_cursor (GtkTextBuffer *buffer,
2361 const GtkTextIter *where)
2363 gtk_text_buffer_select_range (buffer, where, where);
2367 * gtk_text_buffer_select_range:
2368 * @buffer: a #GtkTextBuffer
2369 * @ins: where to put the "insert" mark
2370 * @bound: where to put the "selection_bound" mark
2372 * This function moves the "insert" and "selection_bound" marks
2373 * simultaneously. If you move them in two steps
2374 * with gtk_text_buffer_move_mark(), you will temporarily select a
2375 * region in between their old and new locations, which can be pretty
2376 * inefficient since the temporarily-selected region will force stuff
2377 * to be recalculated. This function moves them as a unit, which can
2383 gtk_text_buffer_select_range (GtkTextBuffer *buffer,
2384 const GtkTextIter *ins,
2385 const GtkTextIter *bound)
2387 GtkTextIter real_ins;
2388 GtkTextIter real_bound;
2390 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2393 real_bound = *bound;
2395 _gtk_text_btree_select_range (get_btree (buffer), &real_ins, &real_bound);
2396 gtk_text_buffer_mark_set (buffer, &real_ins,
2397 gtk_text_buffer_get_insert (buffer));
2398 gtk_text_buffer_mark_set (buffer, &real_bound,
2399 gtk_text_buffer_get_selection_bound (buffer));
2407 * gtk_text_buffer_create_tag:
2408 * @buffer: a #GtkTextBuffer
2409 * @tag_name: name of the new tag, or %NULL
2410 * @first_property_name: name of first property to set, or %NULL
2411 * @Varargs: %NULL-terminated list of property names and values
2414 * Creates a tag and adds it to the tag table for @buffer.
2415 * Equivalent to calling gtk_text_tag_new() and then adding the
2416 * tag to the buffer's tag table. The returned tag is owned by
2417 * the buffer's tag table, so the ref count will be equal to one.
2419 * If @tag_name is %NULL, the tag is anonymous.
2421 * If @tag_name is non-%NULL, a tag called @tag_name must not already
2422 * exist in the tag table for this buffer.
2424 * The @first_property_name argument and subsequent arguments are a list
2425 * of properties to set on the tag, as with g_object_set().
2427 * Return value: a new tag
2430 gtk_text_buffer_create_tag (GtkTextBuffer *buffer,
2431 const gchar *tag_name,
2432 const gchar *first_property_name,
2438 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
2440 tag = gtk_text_tag_new (tag_name);
2442 gtk_text_tag_table_add (get_table (buffer), tag);
2444 if (first_property_name)
2446 va_start (list, first_property_name);
2447 g_object_set_valist (G_OBJECT (tag), first_property_name, list);
2451 g_object_unref (tag);
2457 gtk_text_buffer_real_apply_tag (GtkTextBuffer *buffer,
2459 const GtkTextIter *start,
2460 const GtkTextIter *end)
2462 if (tag->table != buffer->tag_table)
2464 g_warning ("Can only apply tags that are in the tag table for the buffer");
2468 _gtk_text_btree_tag (start, end, tag, TRUE);
2472 gtk_text_buffer_real_remove_tag (GtkTextBuffer *buffer,
2474 const GtkTextIter *start,
2475 const GtkTextIter *end)
2477 if (tag->table != buffer->tag_table)
2479 g_warning ("Can only remove tags that are in the tag table for the buffer");
2483 _gtk_text_btree_tag (start, end, tag, FALSE);
2487 gtk_text_buffer_real_changed (GtkTextBuffer *buffer)
2489 gtk_text_buffer_set_modified (buffer, TRUE);
2493 gtk_text_buffer_real_mark_set (GtkTextBuffer *buffer,
2494 const GtkTextIter *iter,
2497 GtkTextMark *insert;
2499 insert = gtk_text_buffer_get_insert (buffer);
2501 if (mark == insert || mark == gtk_text_buffer_get_selection_bound (buffer))
2503 gboolean has_selection;
2505 update_selection_clipboards (buffer);
2507 has_selection = gtk_text_buffer_get_selection_bounds (buffer,
2511 if (has_selection != buffer->has_selection)
2513 buffer->has_selection = has_selection;
2514 g_object_notify (G_OBJECT (buffer), "has-selection");
2519 g_object_notify (G_OBJECT (buffer), "cursor-position");
2523 gtk_text_buffer_emit_tag (GtkTextBuffer *buffer,
2526 const GtkTextIter *start,
2527 const GtkTextIter *end)
2529 GtkTextIter start_tmp = *start;
2530 GtkTextIter end_tmp = *end;
2532 g_return_if_fail (tag != NULL);
2534 gtk_text_iter_order (&start_tmp, &end_tmp);
2537 g_signal_emit (buffer, signals[APPLY_TAG],
2539 tag, &start_tmp, &end_tmp);
2541 g_signal_emit (buffer, signals[REMOVE_TAG],
2543 tag, &start_tmp, &end_tmp);
2547 * gtk_text_buffer_apply_tag:
2548 * @buffer: a #GtkTextBuffer
2549 * @tag: a #GtkTextTag
2550 * @start: one bound of range to be tagged
2551 * @end: other bound of range to be tagged
2553 * Emits the "apply-tag" signal on @buffer. The default
2554 * handler for the signal applies @tag to the given range.
2555 * @start and @end do not have to be in order.
2558 gtk_text_buffer_apply_tag (GtkTextBuffer *buffer,
2560 const GtkTextIter *start,
2561 const GtkTextIter *end)
2563 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2564 g_return_if_fail (GTK_IS_TEXT_TAG (tag));
2565 g_return_if_fail (start != NULL);
2566 g_return_if_fail (end != NULL);
2567 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
2568 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
2569 g_return_if_fail (tag->table == buffer->tag_table);
2571 gtk_text_buffer_emit_tag (buffer, tag, TRUE, start, end);
2575 * gtk_text_buffer_remove_tag:
2576 * @buffer: a #GtkTextBuffer
2577 * @tag: a #GtkTextTag
2578 * @start: one bound of range to be untagged
2579 * @end: other bound of range to be untagged
2581 * Emits the "remove-tag" signal. The default handler for the signal
2582 * removes all occurrences of @tag from the given range. @start and
2583 * @end don't have to be in order.
2586 gtk_text_buffer_remove_tag (GtkTextBuffer *buffer,
2588 const GtkTextIter *start,
2589 const GtkTextIter *end)
2592 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2593 g_return_if_fail (GTK_IS_TEXT_TAG (tag));
2594 g_return_if_fail (start != NULL);
2595 g_return_if_fail (end != NULL);
2596 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
2597 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
2598 g_return_if_fail (tag->table == buffer->tag_table);
2600 gtk_text_buffer_emit_tag (buffer, tag, FALSE, start, end);
2604 * gtk_text_buffer_apply_tag_by_name:
2605 * @buffer: a #GtkTextBuffer
2606 * @name: name of a named #GtkTextTag
2607 * @start: one bound of range to be tagged
2608 * @end: other bound of range to be tagged
2610 * Calls gtk_text_tag_table_lookup() on the buffer's tag table to
2611 * get a #GtkTextTag, then calls gtk_text_buffer_apply_tag().
2614 gtk_text_buffer_apply_tag_by_name (GtkTextBuffer *buffer,
2616 const GtkTextIter *start,
2617 const GtkTextIter *end)
2621 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2622 g_return_if_fail (name != NULL);
2623 g_return_if_fail (start != NULL);
2624 g_return_if_fail (end != NULL);
2625 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
2626 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
2628 tag = gtk_text_tag_table_lookup (get_table (buffer),
2633 g_warning ("Unknown tag `%s'", name);
2637 gtk_text_buffer_emit_tag (buffer, tag, TRUE, start, end);
2641 * gtk_text_buffer_remove_tag_by_name:
2642 * @buffer: a #GtkTextBuffer
2643 * @name: name of a #GtkTextTag
2644 * @start: one bound of range to be untagged
2645 * @end: other bound of range to be untagged
2647 * Calls gtk_text_tag_table_lookup() on the buffer's tag table to
2648 * get a #GtkTextTag, then calls gtk_text_buffer_remove_tag().
2651 gtk_text_buffer_remove_tag_by_name (GtkTextBuffer *buffer,
2653 const GtkTextIter *start,
2654 const GtkTextIter *end)
2658 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2659 g_return_if_fail (name != NULL);
2660 g_return_if_fail (start != NULL);
2661 g_return_if_fail (end != NULL);
2662 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
2663 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
2665 tag = gtk_text_tag_table_lookup (get_table (buffer),
2670 g_warning ("Unknown tag `%s'", name);
2674 gtk_text_buffer_emit_tag (buffer, tag, FALSE, start, end);
2678 pointer_cmp (gconstpointer a,
2690 * gtk_text_buffer_remove_all_tags:
2691 * @buffer: a #GtkTextBuffer
2692 * @start: one bound of range to be untagged
2693 * @end: other bound of range to be untagged
2695 * Removes all tags in the range between @start and @end. Be careful
2696 * with this function; it could remove tags added in code unrelated to
2697 * the code you're currently writing. That is, using this function is
2698 * probably a bad idea if you have two or more unrelated code sections
2702 gtk_text_buffer_remove_all_tags (GtkTextBuffer *buffer,
2703 const GtkTextIter *start,
2704 const GtkTextIter *end)
2706 GtkTextIter first, second, tmp;
2709 GSList *prev, *next;
2712 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2713 g_return_if_fail (start != NULL);
2714 g_return_if_fail (end != NULL);
2715 g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
2716 g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
2721 gtk_text_iter_order (&first, &second);
2723 /* Get all tags turned on at the start */
2724 tags = gtk_text_iter_get_tags (&first);
2726 /* Find any that are toggled on within the range */
2728 while (gtk_text_iter_forward_to_tag_toggle (&tmp, NULL))
2733 if (gtk_text_iter_compare (&tmp, &second) >= 0)
2734 break; /* past the end of the range */
2736 toggled = gtk_text_iter_get_toggled_tags (&tmp, TRUE);
2738 /* We could end up with a really big-ass list here.
2741 tmp_list2 = toggled;
2742 while (tmp_list2 != NULL)
2744 tags = g_slist_prepend (tags, tmp_list2->data);
2746 tmp_list2 = g_slist_next (tmp_list2);
2749 g_slist_free (toggled);
2753 tags = g_slist_sort (tags, pointer_cmp);
2755 /* Strip duplicates */
2759 while (tmp_list != NULL)
2761 if (tag == tmp_list->data)
2764 next = tmp_list->next;
2768 tmp_list->next = NULL;
2770 g_slist_free (tmp_list);
2773 /* prev is unchanged */
2777 /* not a duplicate */
2778 tag = GTK_TEXT_TAG (tmp_list->data);
2780 tmp_list = tmp_list->next;
2784 g_slist_foreach (tags, (GFunc) g_object_ref, NULL);
2787 while (tmp_list != NULL)
2789 tag = GTK_TEXT_TAG (tmp_list->data);
2791 gtk_text_buffer_remove_tag (buffer, tag, &first, &second);
2793 tmp_list = tmp_list->next;
2796 g_slist_foreach (tags, (GFunc) g_object_unref, NULL);
2798 g_slist_free (tags);
2803 * Obtain various iterators
2807 * gtk_text_buffer_get_iter_at_line_offset:
2808 * @buffer: a #GtkTextBuffer
2809 * @iter: iterator to initialize
2810 * @line_number: line number counting from 0
2811 * @char_offset: char offset from start of line
2813 * Obtains an iterator pointing to @char_offset within the given
2814 * line. The @char_offset must exist, offsets off the end of the line
2815 * are not allowed. Note <emphasis>characters</emphasis>, not bytes;
2816 * UTF-8 may encode one character as multiple bytes.
2819 gtk_text_buffer_get_iter_at_line_offset (GtkTextBuffer *buffer,
2824 g_return_if_fail (iter != NULL);
2825 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2827 _gtk_text_btree_get_iter_at_line_char (get_btree (buffer),
2828 iter, line_number, char_offset);
2832 * gtk_text_buffer_get_iter_at_line_index:
2833 * @buffer: a #GtkTextBuffer
2834 * @iter: iterator to initialize
2835 * @line_number: line number counting from 0
2836 * @byte_index: byte index from start of line
2838 * Obtains an iterator pointing to @byte_index within the given line.
2839 * @byte_index must be the start of a UTF-8 character, and must not be
2840 * beyond the end of the line. Note <emphasis>bytes</emphasis>, not
2841 * characters; UTF-8 may encode one character as multiple bytes.
2844 gtk_text_buffer_get_iter_at_line_index (GtkTextBuffer *buffer,
2849 g_return_if_fail (iter != NULL);
2850 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2852 _gtk_text_btree_get_iter_at_line_byte (get_btree (buffer),
2853 iter, line_number, byte_index);
2857 * gtk_text_buffer_get_iter_at_line:
2858 * @buffer: a #GtkTextBuffer
2859 * @iter: iterator to initialize
2860 * @line_number: line number counting from 0
2862 * Initializes @iter to the start of the given line.
2865 gtk_text_buffer_get_iter_at_line (GtkTextBuffer *buffer,
2869 g_return_if_fail (iter != NULL);
2870 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2872 gtk_text_buffer_get_iter_at_line_offset (buffer, iter, line_number, 0);
2876 * gtk_text_buffer_get_iter_at_offset:
2877 * @buffer: a #GtkTextBuffer
2878 * @iter: iterator to initialize
2879 * @char_offset: char offset from start of buffer, counting from 0, or -1
2881 * Initializes @iter to a position @char_offset chars from the start
2882 * of the entire buffer. If @char_offset is -1 or greater than the number
2883 * of characters in the buffer, @iter is initialized to the end iterator,
2884 * the iterator one past the last valid character in the buffer.
2887 gtk_text_buffer_get_iter_at_offset (GtkTextBuffer *buffer,
2891 g_return_if_fail (iter != NULL);
2892 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2894 _gtk_text_btree_get_iter_at_char (get_btree (buffer), iter, char_offset);
2898 * gtk_text_buffer_get_start_iter:
2899 * @buffer: a #GtkTextBuffer
2900 * @iter: iterator to initialize
2902 * Initialized @iter with the first position in the text buffer. This
2903 * is the same as using gtk_text_buffer_get_iter_at_offset() to get
2904 * the iter at character offset 0.
2907 gtk_text_buffer_get_start_iter (GtkTextBuffer *buffer,
2910 g_return_if_fail (iter != NULL);
2911 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2913 _gtk_text_btree_get_iter_at_char (get_btree (buffer), iter, 0);
2917 * gtk_text_buffer_get_end_iter:
2918 * @buffer: a #GtkTextBuffer
2919 * @iter: iterator to initialize
2921 * Initializes @iter with the "end iterator," one past the last valid
2922 * character in the text buffer. If dereferenced with
2923 * gtk_text_iter_get_char(), the end iterator has a character value of
2924 * 0. The entire buffer lies in the range from the first position in
2925 * the buffer (call gtk_text_buffer_get_start_iter() to get
2926 * character position 0) to the end iterator.
2929 gtk_text_buffer_get_end_iter (GtkTextBuffer *buffer,
2932 g_return_if_fail (iter != NULL);
2933 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2935 _gtk_text_btree_get_end_iter (get_btree (buffer), iter);
2939 * gtk_text_buffer_get_bounds:
2940 * @buffer: a #GtkTextBuffer
2941 * @start: iterator to initialize with first position in the buffer
2942 * @end: iterator to initialize with the end iterator
2944 * Retrieves the first and last iterators in the buffer, i.e. the
2945 * entire buffer lies within the range [@start,@end).
2948 gtk_text_buffer_get_bounds (GtkTextBuffer *buffer,
2952 g_return_if_fail (start != NULL);
2953 g_return_if_fail (end != NULL);
2954 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
2956 _gtk_text_btree_get_iter_at_char (get_btree (buffer), start, 0);
2957 _gtk_text_btree_get_end_iter (get_btree (buffer), end);
2965 * gtk_text_buffer_get_modified:
2966 * @buffer: a #GtkTextBuffer
2968 * Indicates whether the buffer has been modified since the last call
2969 * to gtk_text_buffer_set_modified() set the modification flag to
2970 * %FALSE. Used for example to enable a "save" function in a text
2973 * Return value: %TRUE if the buffer has been modified
2976 gtk_text_buffer_get_modified (GtkTextBuffer *buffer)
2978 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
2980 return buffer->modified;
2984 * gtk_text_buffer_set_modified:
2985 * @buffer: a #GtkTextBuffer
2986 * @setting: modification flag setting
2988 * Used to keep track of whether the buffer has been modified since the
2989 * last time it was saved. Whenever the buffer is saved to disk, call
2990 * gtk_text_buffer_set_modified (@buffer, FALSE). When the buffer is modified,
2991 * it will automatically toggled on the modified bit again. When the modified
2992 * bit flips, the buffer emits a "modified-changed" signal.
2995 gtk_text_buffer_set_modified (GtkTextBuffer *buffer,
2998 gboolean fixed_setting;
3000 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
3002 fixed_setting = setting != FALSE;
3004 if (buffer->modified == fixed_setting)
3008 buffer->modified = fixed_setting;
3009 g_signal_emit (buffer, signals[MODIFIED_CHANGED], 0);
3014 * gtk_text_buffer_get_has_selection:
3015 * @buffer: a #GtkTextBuffer
3017 * Indicates whether the buffer has some text currently selected.
3019 * Return value: %TRUE if the there is text selected
3024 gtk_text_buffer_get_has_selection (GtkTextBuffer *buffer)
3026 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
3028 return buffer->has_selection;
3033 * Assorted other stuff
3037 * gtk_text_buffer_get_line_count:
3038 * @buffer: a #GtkTextBuffer
3040 * Obtains the number of lines in the buffer. This value is cached, so
3041 * the function is very fast.
3043 * Return value: number of lines in the buffer
3046 gtk_text_buffer_get_line_count (GtkTextBuffer *buffer)
3048 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), 0);
3050 return _gtk_text_btree_line_count (get_btree (buffer));
3054 * gtk_text_buffer_get_char_count:
3055 * @buffer: a #GtkTextBuffer
3057 * Gets the number of characters in the buffer; note that characters
3058 * and bytes are not the same, you can't e.g. expect the contents of
3059 * the buffer in string form to be this many bytes long. The character
3060 * count is cached, so this function is very fast.
3062 * Return value: number of characters in the buffer
3065 gtk_text_buffer_get_char_count (GtkTextBuffer *buffer)
3067 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), 0);
3069 return _gtk_text_btree_char_count (get_btree (buffer));
3072 /* Called when we lose the primary selection.
3075 clipboard_clear_selection_cb (GtkClipboard *clipboard,
3078 /* Move selection_bound to the insertion point */
3080 GtkTextIter selection_bound;
3081 GtkTextBuffer *buffer = GTK_TEXT_BUFFER (data);
3083 gtk_text_buffer_get_iter_at_mark (buffer, &insert,
3084 gtk_text_buffer_get_insert (buffer));
3085 gtk_text_buffer_get_iter_at_mark (buffer, &selection_bound,
3086 gtk_text_buffer_get_selection_bound (buffer));
3088 if (!gtk_text_iter_equal (&insert, &selection_bound))
3089 gtk_text_buffer_move_mark (buffer,
3090 gtk_text_buffer_get_selection_bound (buffer),
3094 /* Called when we have the primary selection and someone else wants our
3095 * data in order to paste it.
3098 clipboard_get_selection_cb (GtkClipboard *clipboard,
3099 GtkSelectionData *selection_data,
3103 GtkTextBuffer *buffer = GTK_TEXT_BUFFER (data);
3104 GtkTextIter start, end;
3106 if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
3108 if (info == GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS)
3110 /* Provide the address of the buffer; this will only be
3111 * used within-process
3113 gtk_selection_data_set (selection_data,
3114 selection_data->target,
3119 else if (info == GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT)
3124 str = gtk_text_buffer_serialize (buffer, buffer,
3125 selection_data->target,
3126 &start, &end, &len);
3128 gtk_selection_data_set (selection_data,
3129 selection_data->target,
3138 str = gtk_text_iter_get_visible_text (&start, &end);
3139 gtk_selection_data_set_text (selection_data, str, -1);
3145 static GtkTextBuffer *
3146 create_clipboard_contents_buffer (GtkTextBuffer *buffer)
3148 GtkTextBuffer *contents;
3150 contents = gtk_text_buffer_new (gtk_text_buffer_get_tag_table (buffer));
3152 g_object_set_data (G_OBJECT (contents), I_("gtk-text-buffer-clipboard-source"),
3154 g_object_set_data (G_OBJECT (contents), I_("gtk-text-buffer-clipboard"),
3155 GINT_TO_POINTER (1));
3157 /* Ref the source buffer as long as the clipboard contents buffer
3158 * exists, because it's needed for serializing the contents buffer.
3159 * See http://bugzilla.gnome.org/show_bug.cgi?id=339195
3161 g_object_ref (buffer);
3162 g_object_weak_ref (G_OBJECT (contents), (GWeakNotify) g_object_unref, buffer);
3167 /* Provide cut/copied data */
3169 clipboard_get_contents_cb (GtkClipboard *clipboard,
3170 GtkSelectionData *selection_data,
3174 GtkTextBuffer *contents = GTK_TEXT_BUFFER (data);
3176 g_assert (contents); /* This should never be called unless we own the clipboard */
3178 if (info == GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS)
3180 /* Provide the address of the clipboard buffer; this will only
3181 * be used within-process. OK to supply a NULL value for contents.
3183 gtk_selection_data_set (selection_data,
3184 selection_data->target,
3189 else if (info == GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT)
3191 GtkTextBuffer *clipboard_source_buffer;
3192 GtkTextIter start, end;
3196 clipboard_source_buffer = g_object_get_data (G_OBJECT (contents),
3197 "gtk-text-buffer-clipboard-source");
3199 gtk_text_buffer_get_bounds (contents, &start, &end);
3201 str = gtk_text_buffer_serialize (clipboard_source_buffer, contents,
3202 selection_data->target,
3203 &start, &end, &len);
3205 gtk_selection_data_set (selection_data,
3206 selection_data->target,
3214 GtkTextIter start, end;
3216 gtk_text_buffer_get_bounds (contents, &start, &end);
3218 str = gtk_text_iter_get_visible_text (&start, &end);
3219 gtk_selection_data_set_text (selection_data, str, -1);
3225 clipboard_clear_contents_cb (GtkClipboard *clipboard,
3228 GtkTextBuffer *contents = GTK_TEXT_BUFFER (data);
3230 g_object_unref (contents);
3234 get_paste_point (GtkTextBuffer *buffer,
3236 gboolean clear_afterward)
3238 GtkTextIter insert_point;
3239 GtkTextMark *paste_point_override;
3241 paste_point_override = gtk_text_buffer_get_mark (buffer,
3242 "gtk_paste_point_override");
3244 if (paste_point_override != NULL)
3246 gtk_text_buffer_get_iter_at_mark (buffer, &insert_point,
3247 paste_point_override);
3248 if (clear_afterward)
3249 gtk_text_buffer_delete_mark (buffer,
3250 gtk_text_buffer_get_mark (buffer,
3251 "gtk_paste_point_override"));
3255 gtk_text_buffer_get_iter_at_mark (buffer, &insert_point,
3256 gtk_text_buffer_get_insert (buffer));
3259 *iter = insert_point;
3263 pre_paste_prep (ClipboardRequest *request_data,
3264 GtkTextIter *insert_point)
3266 GtkTextBuffer *buffer = request_data->buffer;
3268 get_paste_point (buffer, insert_point, TRUE);
3270 /* If we're going to replace the selection, we insert before it to
3271 * avoid messing it up, then we delete the selection after inserting.
3273 if (request_data->replace_selection)
3275 GtkTextIter start, end;
3277 if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
3278 *insert_point = start;
3283 post_paste_cleanup (ClipboardRequest *request_data)
3285 if (request_data->replace_selection)
3287 GtkTextIter start, end;
3289 if (gtk_text_buffer_get_selection_bounds (request_data->buffer,
3292 if (request_data->interactive)
3293 gtk_text_buffer_delete_interactive (request_data->buffer,
3296 request_data->default_editable);
3298 gtk_text_buffer_delete (request_data->buffer, &start, &end);
3304 free_clipboard_request (ClipboardRequest *request_data)
3306 g_object_unref (request_data->buffer);
3307 g_free (request_data);
3310 /* Called when we request a paste and receive the text data
3313 clipboard_text_received (GtkClipboard *clipboard,
3317 ClipboardRequest *request_data = data;
3318 GtkTextBuffer *buffer = request_data->buffer;
3322 GtkTextIter insert_point;
3324 if (request_data->interactive)
3325 gtk_text_buffer_begin_user_action (buffer);
3327 pre_paste_prep (request_data, &insert_point);
3329 if (request_data->interactive)
3330 gtk_text_buffer_insert_interactive (buffer, &insert_point,
3331 str, -1, request_data->default_editable);
3333 gtk_text_buffer_insert (buffer, &insert_point,
3336 post_paste_cleanup (request_data);
3338 if (request_data->interactive)
3339 gtk_text_buffer_end_user_action (buffer);
3342 free_clipboard_request (request_data);
3345 static GtkTextBuffer*
3346 selection_data_get_buffer (GtkSelectionData *selection_data,
3347 ClipboardRequest *request_data)
3350 GtkTextBuffer *src_buffer = NULL;
3352 /* If we can get the owner, the selection is in-process */
3353 owner = gdk_selection_owner_get_for_display (selection_data->display,
3354 selection_data->selection);
3359 if (gdk_window_get_window_type (owner) == GDK_WINDOW_FOREIGN)
3362 if (selection_data->type !=
3363 gdk_atom_intern_static_string ("GTK_TEXT_BUFFER_CONTENTS"))
3366 if (selection_data->length != sizeof (src_buffer))
3369 memcpy (&src_buffer, selection_data->data, sizeof (src_buffer));
3371 if (src_buffer == NULL)
3374 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (src_buffer), NULL);
3376 if (gtk_text_buffer_get_tag_table (src_buffer) !=
3377 gtk_text_buffer_get_tag_table (request_data->buffer))
3384 /* These are pretty handy functions; maybe something like them
3385 * should be in the public API. Also, there are other places in this
3386 * file where they could be used.
3389 save_iter (const GtkTextIter *iter,
3390 gboolean left_gravity)
3392 return gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (iter),
3399 restore_iter (const GtkTextIter *iter,
3402 gtk_text_buffer_get_iter_at_mark (gtk_text_mark_get_buffer (save_id),
3403 (GtkTextIter*) iter,
3405 gtk_text_buffer_delete_mark (gtk_text_mark_get_buffer (save_id),
3411 clipboard_rich_text_received (GtkClipboard *clipboard,
3417 ClipboardRequest *request_data = data;
3418 GtkTextIter insert_point;
3419 gboolean retval = TRUE;
3420 GError *error = NULL;
3422 if (text != NULL && length > 0)
3424 pre_paste_prep (request_data, &insert_point);
3426 if (request_data->interactive)
3427 gtk_text_buffer_begin_user_action (request_data->buffer);
3429 if (!request_data->interactive ||
3430 gtk_text_iter_can_insert (&insert_point,
3431 request_data->default_editable))
3433 retval = gtk_text_buffer_deserialize (request_data->buffer,
3434 request_data->buffer,
3443 g_warning ("error pasting: %s\n", error->message);
3444 g_clear_error (&error);
3447 if (request_data->interactive)
3448 gtk_text_buffer_end_user_action (request_data->buffer);
3452 post_paste_cleanup (request_data);
3457 /* Request the text selection instead */
3458 gtk_clipboard_request_text (clipboard,
3459 clipboard_text_received,
3464 paste_from_buffer (ClipboardRequest *request_data,
3465 GtkTextBuffer *src_buffer,
3466 const GtkTextIter *start,
3467 const GtkTextIter *end)
3469 GtkTextIter insert_point;
3470 GtkTextBuffer *buffer = request_data->buffer;
3472 /* We're about to emit a bunch of signals, so be safe */
3473 g_object_ref (src_buffer);
3475 pre_paste_prep (request_data, &insert_point);
3477 if (request_data->interactive)
3478 gtk_text_buffer_begin_user_action (buffer);
3480 if (!gtk_text_iter_equal (start, end))
3482 if (!request_data->interactive ||
3483 (gtk_text_iter_can_insert (&insert_point,
3484 request_data->default_editable)))
3485 gtk_text_buffer_real_insert_range (buffer,
3489 request_data->interactive);
3492 post_paste_cleanup (request_data);
3494 if (request_data->interactive)
3495 gtk_text_buffer_end_user_action (buffer);
3497 g_object_unref (src_buffer);
3499 free_clipboard_request (request_data);
3503 clipboard_clipboard_buffer_received (GtkClipboard *clipboard,
3504 GtkSelectionData *selection_data,
3507 ClipboardRequest *request_data = data;
3508 GtkTextBuffer *src_buffer;
3510 src_buffer = selection_data_get_buffer (selection_data, request_data);
3514 GtkTextIter start, end;
3516 if (g_object_get_data (G_OBJECT (src_buffer), "gtk-text-buffer-clipboard"))
3518 gtk_text_buffer_get_bounds (src_buffer, &start, &end);
3520 paste_from_buffer (request_data, src_buffer,
3525 if (gtk_text_buffer_get_selection_bounds (src_buffer, &start, &end))
3526 paste_from_buffer (request_data, src_buffer,
3532 if (gtk_clipboard_wait_is_rich_text_available (clipboard,
3533 request_data->buffer))
3535 /* Request rich text */
3536 gtk_clipboard_request_rich_text (clipboard,
3537 request_data->buffer,
3538 clipboard_rich_text_received,
3543 /* Request the text selection instead */
3544 gtk_clipboard_request_text (clipboard,
3545 clipboard_text_received,
3553 GtkClipboard *clipboard;
3555 } SelectionClipboard;
3558 update_selection_clipboards (GtkTextBuffer *buffer)
3560 GtkTextBufferPrivate *priv;
3561 GSList *tmp_list = buffer->selection_clipboards;
3563 priv = GTK_TEXT_BUFFER_GET_PRIVATE (buffer);
3565 gtk_text_buffer_get_copy_target_list (buffer);
3572 SelectionClipboard *selection_clipboard = tmp_list->data;
3573 GtkClipboard *clipboard = selection_clipboard->clipboard;
3575 /* Determine whether we have a selection and adjust X selection
3578 if (!gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
3580 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (buffer))
3581 gtk_clipboard_clear (clipboard);
3585 /* Even if we already have the selection, we need to update our
3588 if (!gtk_clipboard_set_with_owner (clipboard,
3589 priv->copy_target_entries,
3590 priv->n_copy_target_entries,
3591 clipboard_get_selection_cb,
3592 clipboard_clear_selection_cb,
3594 clipboard_clear_selection_cb (clipboard, buffer);
3597 tmp_list = tmp_list->next;
3601 static SelectionClipboard *
3602 find_selection_clipboard (GtkTextBuffer *buffer,
3603 GtkClipboard *clipboard)
3605 GSList *tmp_list = buffer->selection_clipboards;
3608 SelectionClipboard *selection_clipboard = tmp_list->data;
3609 if (selection_clipboard->clipboard == clipboard)
3610 return selection_clipboard;
3612 tmp_list = tmp_list->next;
3619 * gtk_text_buffer_add_selection_clipboard:
3620 * @buffer: a #GtkTextBuffer
3621 * @clipboard: a #GtkClipboard
3623 * Adds @clipboard to the list of clipboards in which the selection
3624 * contents of @buffer are available. In most cases, @clipboard will be
3625 * the #GtkClipboard of type %GDK_SELECTION_PRIMARY for a view of @buffer.
3628 gtk_text_buffer_add_selection_clipboard (GtkTextBuffer *buffer,
3629 GtkClipboard *clipboard)
3631 SelectionClipboard *selection_clipboard;
3633 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
3634 g_return_if_fail (clipboard != NULL);
3636 selection_clipboard = find_selection_clipboard (buffer, clipboard);
3637 if (selection_clipboard)
3639 selection_clipboard->ref_count++;
3643 selection_clipboard = g_new (SelectionClipboard, 1);
3645 selection_clipboard->clipboard = clipboard;
3646 selection_clipboard->ref_count = 1;
3648 buffer->selection_clipboards = g_slist_prepend (buffer->selection_clipboards, selection_clipboard);
3653 * gtk_text_buffer_remove_selection_clipboard:
3654 * @buffer: a #GtkTextBuffer
3655 * @clipboard: a #GtkClipboard added to @buffer by
3656 * gtk_text_buffer_add_selection_clipboard()
3658 * Removes a #GtkClipboard added with
3659 * gtk_text_buffer_add_selection_clipboard().
3662 gtk_text_buffer_remove_selection_clipboard (GtkTextBuffer *buffer,
3663 GtkClipboard *clipboard)
3665 SelectionClipboard *selection_clipboard;
3667 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
3668 g_return_if_fail (clipboard != NULL);
3670 selection_clipboard = find_selection_clipboard (buffer, clipboard);
3671 g_return_if_fail (selection_clipboard != NULL);
3673 selection_clipboard->ref_count--;
3674 if (selection_clipboard->ref_count == 0)
3676 if (gtk_clipboard_get_owner (selection_clipboard->clipboard) == G_OBJECT (buffer))
3677 gtk_clipboard_clear (selection_clipboard->clipboard);
3679 buffer->selection_clipboards = g_slist_remove (buffer->selection_clipboards,
3680 selection_clipboard);
3682 g_free (selection_clipboard);
3687 remove_all_selection_clipboards (GtkTextBuffer *buffer)
3689 g_slist_foreach (buffer->selection_clipboards, (GFunc)g_free, NULL);
3690 g_slist_free (buffer->selection_clipboards);
3691 buffer->selection_clipboards = NULL;
3695 * gtk_text_buffer_paste_clipboard:
3696 * @buffer: a #GtkTextBuffer
3697 * @clipboard: the #GtkClipboard to paste from
3698 * @override_location: location to insert pasted text, or %NULL for
3700 * @default_editable: whether the buffer is editable by default
3702 * Pastes the contents of a clipboard at the insertion point, or at
3703 * @override_location. (Note: pasting is asynchronous, that is, we'll
3704 * ask for the paste data and return, and at some point later after
3705 * the main loop runs, the paste data will be inserted.)
3708 gtk_text_buffer_paste_clipboard (GtkTextBuffer *buffer,
3709 GtkClipboard *clipboard,
3710 GtkTextIter *override_location,
3711 gboolean default_editable)
3713 ClipboardRequest *data = g_new (ClipboardRequest, 1);
3714 GtkTextIter paste_point;
3715 GtkTextIter start, end;
3717 if (override_location != NULL)
3718 gtk_text_buffer_create_mark (buffer,
3719 "gtk_paste_point_override",
3720 override_location, FALSE);
3722 data->buffer = g_object_ref (buffer);
3723 data->interactive = TRUE;
3724 data->default_editable = default_editable;
3726 /* When pasting with the cursor inside the selection area, you
3727 * replace the selection with the new text, otherwise, you
3728 * simply insert the new text at the point where the click
3729 * occured, unselecting any selected text. The replace_selection
3730 * flag toggles this behavior.
3732 data->replace_selection = FALSE;
3734 get_paste_point (buffer, &paste_point, FALSE);
3735 if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end) &&
3736 (gtk_text_iter_in_range (&paste_point, &start, &end) ||
3737 gtk_text_iter_equal (&paste_point, &end)))
3738 data->replace_selection = TRUE;
3740 gtk_clipboard_request_contents (clipboard,
3741 gdk_atom_intern_static_string ("GTK_TEXT_BUFFER_CONTENTS"),
3742 clipboard_clipboard_buffer_received, data);
3746 * gtk_text_buffer_delete_selection:
3747 * @buffer: a #GtkTextBuffer
3748 * @interactive: whether the deletion is caused by user interaction
3749 * @default_editable: whether the buffer is editable by default
3751 * Deletes the range between the "insert" and "selection_bound" marks,
3752 * that is, the currently-selected text. If @interactive is %TRUE,
3753 * the editability of the selection will be considered (users can't delete
3756 * Return value: whether there was a non-empty selection to delete
3759 gtk_text_buffer_delete_selection (GtkTextBuffer *buffer,
3760 gboolean interactive,
3761 gboolean default_editable)
3766 if (!gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
3768 return FALSE; /* No selection */
3774 gtk_text_buffer_begin_user_action (buffer);
3775 gtk_text_buffer_delete_interactive (buffer, &start, &end, default_editable);
3776 gtk_text_buffer_end_user_action (buffer);
3779 gtk_text_buffer_delete (buffer, &start, &end);
3781 return TRUE; /* We deleted stuff */
3786 * gtk_text_buffer_backspace:
3787 * @buffer: a #GtkTextBuffer
3788 * @iter: a position in @buffer
3789 * @interactive: whether the deletion is caused by user interaction
3790 * @default_editable: whether the buffer is editable by default
3792 * Performs the appropriate action as if the user hit the delete
3793 * key with the cursor at the position specified by @iter. In the
3794 * normal case a single character will be deleted, but when
3795 * combining accents are involved, more than one character can
3796 * be deleted, and when precomposed character and accent combinations
3797 * are involved, less than one character will be deleted.
3799 * Because the buffer is modified, all outstanding iterators become
3800 * invalid after calling this function; however, the @iter will be
3801 * re-initialized to point to the location where text was deleted.
3803 * Return value: %TRUE if the buffer was modified
3808 gtk_text_buffer_backspace (GtkTextBuffer *buffer,
3810 gboolean interactive,
3811 gboolean default_editable)
3813 gchar *cluster_text;
3816 gboolean retval = FALSE;
3817 const PangoLogAttr *attrs;
3819 gboolean backspace_deletes_character;
3821 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
3822 g_return_val_if_fail (iter != NULL, FALSE);
3827 attrs = _gtk_text_buffer_get_line_log_attrs (buffer, &start, NULL);
3829 /* For no good reason, attrs is NULL for the empty last line in
3830 * a buffer. Special case that here. (#156164)
3834 offset = gtk_text_iter_get_line_offset (&start);
3835 backspace_deletes_character = attrs[offset].backspace_deletes_character;
3838 backspace_deletes_character = FALSE;
3840 gtk_text_iter_backward_cursor_position (&start);
3842 if (gtk_text_iter_equal (&start, &end))
3845 cluster_text = gtk_text_iter_get_text (&start, &end);
3848 gtk_text_buffer_begin_user_action (buffer);
3850 if (gtk_text_buffer_delete_interactive (buffer, &start, &end,
3853 if (backspace_deletes_character)
3855 gchar *normalized_text = g_utf8_normalize (cluster_text,
3856 strlen (cluster_text),
3858 glong len = g_utf8_strlen (normalized_text, -1);
3861 gtk_text_buffer_insert_interactive (buffer,
3864 g_utf8_offset_to_pointer (normalized_text, len - 1) - normalized_text,
3867 g_free (normalized_text);
3874 gtk_text_buffer_end_user_action (buffer);
3876 g_free (cluster_text);
3878 /* Revalidate the users iter */
3885 cut_or_copy (GtkTextBuffer *buffer,
3886 GtkClipboard *clipboard,
3887 gboolean delete_region_after,
3888 gboolean interactive,
3889 gboolean default_editable)
3891 GtkTextBufferPrivate *priv;
3893 /* We prefer to cut the selected region between selection_bound and
3894 * insertion point. If that region is empty, then we cut the region
3895 * between the "anchor" and the insertion point (this is for
3896 * C-space and M-w and other Emacs-style copy/yank keys). Note that
3897 * insert and selection_bound are guaranteed to exist, but the
3898 * anchor only exists sometimes.
3903 priv = GTK_TEXT_BUFFER_GET_PRIVATE (buffer);
3905 gtk_text_buffer_get_copy_target_list (buffer);
3907 if (!gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
3909 /* Let's try the anchor thing */
3910 GtkTextMark * anchor = gtk_text_buffer_get_mark (buffer, "anchor");
3916 gtk_text_buffer_get_iter_at_mark (buffer, &end, anchor);
3917 gtk_text_iter_order (&start, &end);
3921 if (!gtk_text_iter_equal (&start, &end))
3924 GtkTextBuffer *contents;
3926 contents = create_clipboard_contents_buffer (buffer);
3928 gtk_text_buffer_get_iter_at_offset (contents, &ins, 0);
3930 gtk_text_buffer_insert_range (contents, &ins, &start, &end);
3932 if (!gtk_clipboard_set_with_data (clipboard,
3933 priv->copy_target_entries,
3934 priv->n_copy_target_entries,
3935 clipboard_get_contents_cb,
3936 clipboard_clear_contents_cb,
3938 g_object_unref (contents);
3940 gtk_clipboard_set_can_store (clipboard,
3941 priv->copy_target_entries + 1,
3942 priv->n_copy_target_entries - 1);
3944 if (delete_region_after)
3947 gtk_text_buffer_delete_interactive (buffer, &start, &end,
3950 gtk_text_buffer_delete (buffer, &start, &end);
3956 * gtk_text_buffer_cut_clipboard:
3957 * @buffer: a #GtkTextBuffer
3958 * @clipboard: the #GtkClipboard object to cut to
3959 * @default_editable: default editability of the buffer
3961 * Copies the currently-selected text to a clipboard, then deletes
3962 * said text if it's editable.
3965 gtk_text_buffer_cut_clipboard (GtkTextBuffer *buffer,
3966 GtkClipboard *clipboard,
3967 gboolean default_editable)
3969 gtk_text_buffer_begin_user_action (buffer);
3970 cut_or_copy (buffer, clipboard, TRUE, TRUE, default_editable);
3971 gtk_text_buffer_end_user_action (buffer);
3975 * gtk_text_buffer_copy_clipboard:
3976 * @buffer: a #GtkTextBuffer
3977 * @clipboard: the #GtkClipboard object to copy to
3979 * Copies the currently-selected text to a clipboard.
3982 gtk_text_buffer_copy_clipboard (GtkTextBuffer *buffer,
3983 GtkClipboard *clipboard)
3985 gtk_text_buffer_begin_user_action (buffer);
3986 cut_or_copy (buffer, clipboard, FALSE, TRUE, TRUE);
3987 gtk_text_buffer_end_user_action (buffer);
3991 * gtk_text_buffer_get_selection_bounds:
3992 * @buffer: a #GtkTextBuffer a #GtkTextBuffer
3993 * @start: iterator to initialize with selection start
3994 * @end: iterator to initialize with selection end
3996 * Returns %TRUE if some text is selected; places the bounds
3997 * of the selection in @start and @end (if the selection has length 0,
3998 * then @start and @end are filled in with the same value).
3999 * @start and @end will be in ascending order. If @start and @end are
4000 * NULL, then they are not filled in, but the return value still indicates
4001 * whether text is selected.
4003 * Return value: whether the selection has nonzero length
4006 gtk_text_buffer_get_selection_bounds (GtkTextBuffer *buffer,
4010 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
4012 return _gtk_text_btree_get_selection_bounds (get_btree (buffer), start, end);
4016 * gtk_text_buffer_begin_user_action:
4017 * @buffer: a #GtkTextBuffer
4019 * Called to indicate that the buffer operations between here and a
4020 * call to gtk_text_buffer_end_user_action() are part of a single
4021 * user-visible operation. The operations between
4022 * gtk_text_buffer_begin_user_action() and
4023 * gtk_text_buffer_end_user_action() can then be grouped when creating
4024 * an undo stack. #GtkTextBuffer maintains a count of calls to
4025 * gtk_text_buffer_begin_user_action() that have not been closed with
4026 * a call to gtk_text_buffer_end_user_action(), and emits the
4027 * "begin-user-action" and "end-user-action" signals only for the
4028 * outermost pair of calls. This allows you to build user actions
4029 * from other user actions.
4031 * The "interactive" buffer mutation functions, such as
4032 * gtk_text_buffer_insert_interactive(), automatically call begin/end
4033 * user action around the buffer operations they perform, so there's
4034 * no need to add extra calls if you user action consists solely of a
4035 * single call to one of those functions.
4038 gtk_text_buffer_begin_user_action (GtkTextBuffer *buffer)
4040 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
4042 buffer->user_action_count += 1;
4044 if (buffer->user_action_count == 1)
4046 /* Outermost nested user action begin emits the signal */
4047 g_signal_emit (buffer, signals[BEGIN_USER_ACTION], 0);
4052 * gtk_text_buffer_end_user_action:
4053 * @buffer: a #GtkTextBuffer
4055 * Should be paired with a call to gtk_text_buffer_begin_user_action().
4056 * See that function for a full explanation.
4059 gtk_text_buffer_end_user_action (GtkTextBuffer *buffer)
4061 g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
4062 g_return_if_fail (buffer->user_action_count > 0);
4064 buffer->user_action_count -= 1;
4066 if (buffer->user_action_count == 0)
4068 /* Ended the outermost-nested user action end, so emit the signal */
4069 g_signal_emit (buffer, signals[END_USER_ACTION], 0);
4074 gtk_text_buffer_free_target_lists (GtkTextBuffer *buffer)
4076 GtkTextBufferPrivate *priv = GTK_TEXT_BUFFER_GET_PRIVATE (buffer);
4078 if (priv->copy_target_list)
4080 gtk_target_list_unref (priv->copy_target_list);
4081 priv->copy_target_list = NULL;
4083 gtk_target_table_free (priv->copy_target_entries,
4084 priv->n_copy_target_entries);
4085 priv->copy_target_entries = NULL;
4086 priv->n_copy_target_entries = 0;
4089 if (priv->paste_target_list)
4091 gtk_target_list_unref (priv->paste_target_list);
4092 priv->paste_target_list = NULL;
4094 gtk_target_table_free (priv->paste_target_entries,
4095 priv->n_paste_target_entries);
4096 priv->paste_target_entries = NULL;
4097 priv->n_paste_target_entries = 0;
4101 static GtkTargetList *
4102 gtk_text_buffer_get_target_list (GtkTextBuffer *buffer,
4103 gboolean deserializable,
4104 GtkTargetEntry **entries,
4107 GtkTargetList *target_list;
4109 target_list = gtk_target_list_new (NULL, 0);
4111 gtk_target_list_add (target_list,
4112 gdk_atom_intern_static_string ("GTK_TEXT_BUFFER_CONTENTS"),
4113 GTK_TARGET_SAME_APP,
4114 GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS);
4116 gtk_target_list_add_rich_text_targets (target_list,
4117 GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT,
4121 gtk_target_list_add_text_targets (target_list,
4122 GTK_TEXT_BUFFER_TARGET_INFO_TEXT);
4124 *entries = gtk_target_table_new_from_list (target_list, n_entries);
4130 * gtk_text_buffer_get_copy_target_list:
4131 * @buffer: a #GtkTextBuffer
4133 * This function returns the list of targets this text buffer can
4134 * provide for copying and as DND source. The targets in the list are
4135 * added with %info values from the #GtkTextBufferTargetInfo enum,
4136 * using gtk_target_list_add_rich_text_targets() and
4137 * gtk_target_list_add_text_targets().
4139 * Return value: the #GtkTargetList
4144 gtk_text_buffer_get_copy_target_list (GtkTextBuffer *buffer)
4146 GtkTextBufferPrivate *priv;
4148 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
4150 priv = GTK_TEXT_BUFFER_GET_PRIVATE (buffer);
4152 if (! priv->copy_target_list)
4153 priv->copy_target_list =
4154 gtk_text_buffer_get_target_list (buffer, FALSE,
4155 &priv->copy_target_entries,
4156 &priv->n_copy_target_entries);
4158 return priv->copy_target_list;
4162 * gtk_text_buffer_get_paste_target_list:
4163 * @buffer: a #GtkTextBuffer
4165 * This function returns the list of targets this text buffer supports
4166 * for pasting and as DND destination. The targets in the list are
4167 * added with %info values from the #GtkTextBufferTargetInfo enum,
4168 * using gtk_target_list_add_rich_text_targets() and
4169 * gtk_target_list_add_text_targets().
4171 * Return value: the #GtkTargetList
4176 gtk_text_buffer_get_paste_target_list (GtkTextBuffer *buffer)
4178 GtkTextBufferPrivate *priv;
4180 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
4182 priv = GTK_TEXT_BUFFER_GET_PRIVATE (buffer);
4184 if (! priv->paste_target_list)
4185 priv->paste_target_list =
4186 gtk_text_buffer_get_target_list (buffer, TRUE,
4187 &priv->paste_target_entries,
4188 &priv->n_paste_target_entries);
4190 return priv->paste_target_list;
4194 * Logical attribute cache
4197 #define ATTR_CACHE_SIZE 2
4199 typedef struct _CacheEntry CacheEntry;
4204 PangoLogAttr *attrs;
4207 struct _GtkTextLogAttrCache
4209 gint chars_changed_stamp;
4210 CacheEntry entries[ATTR_CACHE_SIZE];
4214 free_log_attr_cache (GtkTextLogAttrCache *cache)
4217 while (i < ATTR_CACHE_SIZE)
4219 g_free (cache->entries[i].attrs);
4226 clear_log_attr_cache (GtkTextLogAttrCache *cache)
4229 while (i < ATTR_CACHE_SIZE)
4231 g_free (cache->entries[i].attrs);
4232 cache->entries[i].attrs = NULL;
4237 static PangoLogAttr*
4238 compute_log_attrs (const GtkTextIter *iter,
4244 gint char_len, byte_len;
4245 PangoLogAttr *attrs = NULL;
4250 gtk_text_iter_set_line_offset (&start, 0);
4251 gtk_text_iter_forward_line (&end);
4253 paragraph = gtk_text_iter_get_slice (&start, &end);
4254 char_len = g_utf8_strlen (paragraph, -1);
4255 byte_len = strlen (paragraph);
4257 g_assert (char_len > 0);
4260 *char_lenp = char_len;
4262 attrs = g_new (PangoLogAttr, char_len + 1);
4264 /* FIXME we need to follow PangoLayout and allow different language
4265 * tags within the paragraph
4267 pango_get_log_attrs (paragraph, byte_len, -1,
4268 gtk_text_iter_get_language (&start),
4277 /* The return value from this is valid until you call this a second time.
4280 _gtk_text_buffer_get_line_log_attrs (GtkTextBuffer *buffer,
4281 const GtkTextIter *anywhere_in_line,
4285 GtkTextLogAttrCache *cache;
4288 g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
4289 g_return_val_if_fail (anywhere_in_line != NULL, NULL);
4291 /* special-case for empty last line in buffer */
4292 if (gtk_text_iter_is_end (anywhere_in_line) &&
4293 gtk_text_iter_get_line_offset (anywhere_in_line) == 0)
4300 /* FIXME we also need to recompute log attrs if the language tag at
4301 * the start of a paragraph changes
4304 if (buffer->log_attr_cache == NULL)
4306 buffer->log_attr_cache = g_new0 (GtkTextLogAttrCache, 1);
4307 buffer->log_attr_cache->chars_changed_stamp =
4308 _gtk_text_btree_get_chars_changed_stamp (get_btree (buffer));
4310 else if (buffer->log_attr_cache->chars_changed_stamp !=
4311 _gtk_text_btree_get_chars_changed_stamp (get_btree (buffer)))
4313 clear_log_attr_cache (buffer->log_attr_cache);
4316 cache = buffer->log_attr_cache;
4317 line = gtk_text_iter_get_line (anywhere_in_line);
4320 while (i < ATTR_CACHE_SIZE)
4322 if (cache->entries[i].attrs &&
4323 cache->entries[i].line == line)
4326 *char_len = cache->entries[i].char_len;
4327 return cache->entries[i].attrs;
4332 /* Not in cache; open up the first cache entry */
4333 g_free (cache->entries[ATTR_CACHE_SIZE-1].attrs);
4335 g_memmove (cache->entries + 1, cache->entries,
4336 sizeof (CacheEntry) * (ATTR_CACHE_SIZE - 1));
4338 cache->entries[0].line = line;
4339 cache->entries[0].attrs = compute_log_attrs (anywhere_in_line,
4340 &cache->entries[0].char_len);
4343 *char_len = cache->entries[0].char_len;
4345 return cache->entries[0].attrs;
4349 _gtk_text_buffer_notify_will_remove_tag (GtkTextBuffer *buffer,
4352 /* This removes tag from the buffer, but DOESN'T emit the
4353 * remove-tag signal, because we can't afford to have user
4354 * code messing things up at this point; the tag MUST be removed
4358 _gtk_text_btree_notify_will_remove_tag (buffer->btree, tag);
4366 _gtk_text_buffer_spew (GtkTextBuffer *buffer)
4368 _gtk_text_btree_spew (get_btree (buffer));
4371 #define __GTK_TEXT_BUFFER_C__
4372 #include "gtkaliasdef.c"