/* GTK - The GIMP Toolkit * gtktextbuffer.c Copyright (C) 2000 Red Hat, Inc. * Copyright (C) 2004 Nokia Corporation * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see . */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include "config.h" #include #include #define GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API #include "gtkclipboard.h" #include "gtkdnd.h" #include "gtkinvisible.h" #include "gtkmarshalers.h" #include "gtktextbuffer.h" #include "gtktextbufferrichtext.h" #include "gtktextbtree.h" #include "gtktextiterprivate.h" #include "gtktexttagprivate.h" #include "gtkprivate.h" #include "gtkintl.h" /** * SECTION:gtktextbuffer * @Short_description: Stores attributed text for display in a GtkTextView * @Title: GtkTextBuffer * @See_also: #GtkTextView, #GtkTextIter, #GtkTextMark * * You may wish to begin by reading the * [text widget conceptual overview][TextWidget] * which gives an overview of all the objects and data * types related to the text widget and how they work together. */ typedef struct _GtkTextLogAttrCache GtkTextLogAttrCache; struct _GtkTextBufferPrivate { GtkTargetList *copy_target_list; GtkTargetEntry *copy_target_entries; GtkTargetList *paste_target_list; GtkTargetEntry *paste_target_entries; gint n_copy_target_entries; gint n_paste_target_entries; GtkTextTagTable *tag_table; GtkTextBTree *btree; GSList *clipboard_contents_buffers; GSList *selection_clipboards; GtkTextLogAttrCache *log_attr_cache; guint user_action_count; /* Whether the buffer has been modified since last save */ guint modified : 1; guint has_selection : 1; }; typedef struct _ClipboardRequest ClipboardRequest; struct _ClipboardRequest { GtkTextBuffer *buffer; guint interactive : 1; guint default_editable : 1; guint replace_selection : 1; }; enum { INSERT_TEXT, INSERT_PIXBUF, INSERT_CHILD_ANCHOR, DELETE_RANGE, CHANGED, MODIFIED_CHANGED, MARK_SET, MARK_DELETED, APPLY_TAG, REMOVE_TAG, BEGIN_USER_ACTION, END_USER_ACTION, PASTE_DONE, LAST_SIGNAL }; enum { PROP_0, /* Construct */ PROP_TAG_TABLE, /* Normal */ PROP_TEXT, PROP_HAS_SELECTION, PROP_CURSOR_POSITION, PROP_COPY_TARGET_LIST, PROP_PASTE_TARGET_LIST }; static void gtk_text_buffer_finalize (GObject *object); static void gtk_text_buffer_real_insert_text (GtkTextBuffer *buffer, GtkTextIter *iter, const gchar *text, gint len); static void gtk_text_buffer_real_insert_pixbuf (GtkTextBuffer *buffer, GtkTextIter *iter, GdkPixbuf *pixbuf); static void gtk_text_buffer_real_insert_anchor (GtkTextBuffer *buffer, GtkTextIter *iter, GtkTextChildAnchor *anchor); static void gtk_text_buffer_real_delete_range (GtkTextBuffer *buffer, GtkTextIter *start, GtkTextIter *end); static void gtk_text_buffer_real_apply_tag (GtkTextBuffer *buffer, GtkTextTag *tag, const GtkTextIter *start_char, const GtkTextIter *end_char); static void gtk_text_buffer_real_remove_tag (GtkTextBuffer *buffer, GtkTextTag *tag, const GtkTextIter *start_char, const GtkTextIter *end_char); static void gtk_text_buffer_real_changed (GtkTextBuffer *buffer); static void gtk_text_buffer_real_mark_set (GtkTextBuffer *buffer, const GtkTextIter *iter, GtkTextMark *mark); static GtkTextBTree* get_btree (GtkTextBuffer *buffer); static void free_log_attr_cache (GtkTextLogAttrCache *cache); static void remove_all_selection_clipboards (GtkTextBuffer *buffer); static void update_selection_clipboards (GtkTextBuffer *buffer); static GtkTextBuffer *create_clipboard_contents_buffer (GtkTextBuffer *buffer); static void gtk_text_buffer_free_target_lists (GtkTextBuffer *buffer); static guint signals[LAST_SIGNAL] = { 0 }; static void gtk_text_buffer_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_text_buffer_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gtk_text_buffer_notify (GObject *object, GParamSpec *pspec); G_DEFINE_TYPE_WITH_PRIVATE (GtkTextBuffer, gtk_text_buffer, G_TYPE_OBJECT) static void gtk_text_buffer_class_init (GtkTextBufferClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->finalize = gtk_text_buffer_finalize; object_class->set_property = gtk_text_buffer_set_property; object_class->get_property = gtk_text_buffer_get_property; object_class->notify = gtk_text_buffer_notify; klass->insert_text = gtk_text_buffer_real_insert_text; klass->insert_pixbuf = gtk_text_buffer_real_insert_pixbuf; klass->insert_child_anchor = gtk_text_buffer_real_insert_anchor; klass->delete_range = gtk_text_buffer_real_delete_range; klass->apply_tag = gtk_text_buffer_real_apply_tag; klass->remove_tag = gtk_text_buffer_real_remove_tag; klass->changed = gtk_text_buffer_real_changed; klass->mark_set = gtk_text_buffer_real_mark_set; /* Construct */ g_object_class_install_property (object_class, PROP_TAG_TABLE, g_param_spec_object ("tag-table", P_("Tag Table"), P_("Text Tag Table"), GTK_TYPE_TEXT_TAG_TABLE, GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); /* Normal properties*/ /** * GtkTextBuffer:text: * * The text content of the buffer. Without child widgets and images, * see gtk_text_buffer_get_text() for more information. * * Since: 2.8 */ g_object_class_install_property (object_class, PROP_TEXT, g_param_spec_string ("text", P_("Text"), P_("Current text of the buffer"), "", GTK_PARAM_READWRITE)); /** * GtkTextBuffer:has-selection: * * Whether the buffer has some text currently selected. * * Since: 2.10 */ g_object_class_install_property (object_class, PROP_HAS_SELECTION, g_param_spec_boolean ("has-selection", P_("Has selection"), P_("Whether the buffer has some text currently selected"), FALSE, GTK_PARAM_READABLE)); /** * GtkTextBuffer:cursor-position: * * The position of the insert mark (as offset from the beginning * of the buffer). It is useful for getting notified when the * cursor moves. * * Since: 2.10 */ g_object_class_install_property (object_class, PROP_CURSOR_POSITION, g_param_spec_int ("cursor-position", P_("Cursor position"), P_("The position of the insert mark (as offset from the beginning of the buffer)"), 0, G_MAXINT, 0, GTK_PARAM_READABLE)); /** * GtkTextBuffer:copy-target-list: * * The list of targets this buffer supports for clipboard copying * and as DND source. * * Since: 2.10 */ g_object_class_install_property (object_class, PROP_COPY_TARGET_LIST, g_param_spec_boxed ("copy-target-list", P_("Copy target list"), P_("The list of targets this buffer supports for clipboard copying and DND source"), GTK_TYPE_TARGET_LIST, GTK_PARAM_READABLE)); /** * GtkTextBuffer:paste-target-list: * * The list of targets this buffer supports for clipboard pasting * and as DND destination. * * Since: 2.10 */ g_object_class_install_property (object_class, PROP_PASTE_TARGET_LIST, g_param_spec_boxed ("paste-target-list", P_("Paste target list"), P_("The list of targets this buffer supports for clipboard pasting and DND destination"), GTK_TYPE_TARGET_LIST, GTK_PARAM_READABLE)); /** * GtkTextBuffer::insert-text: * @textbuffer: the object which received the signal * @location: position to insert @text in @textbuffer * @text: the UTF-8 text to be inserted * @len: length of the inserted text in bytes * * The ::insert-text signal is emitted to insert text in a #GtkTextBuffer. * Insertion actually occurs in the default handler. * * Note that if your handler runs before the default handler it must not * invalidate the @location iter (or has to revalidate it). * The default signal handler revalidates it to point to the end of the * inserted text. * * See also: * gtk_text_buffer_insert(), * gtk_text_buffer_insert_range(). */ signals[INSERT_TEXT] = g_signal_new (I_("insert-text"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, insert_text), NULL, NULL, _gtk_marshal_VOID__BOXED_STRING_INT, G_TYPE_NONE, 3, GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE, G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE, G_TYPE_INT); g_signal_set_va_marshaller (signals[INSERT_TEXT], G_TYPE_FROM_CLASS (klass), _gtk_marshal_VOID__BOXED_STRING_INTv); /** * GtkTextBuffer::insert-pixbuf: * @textbuffer: the object which received the signal * @location: position to insert @pixbuf in @textbuffer * @pixbuf: the #GdkPixbuf to be inserted * * The ::insert-pixbuf signal is emitted to insert a #GdkPixbuf * in a #GtkTextBuffer. Insertion actually occurs in the default handler. * * Note that if your handler runs before the default handler it must not * invalidate the @location iter (or has to revalidate it). * The default signal handler revalidates it to be placed after the * inserted @pixbuf. * * See also: gtk_text_buffer_insert_pixbuf(). */ signals[INSERT_PIXBUF] = g_signal_new (I_("insert-pixbuf"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, insert_pixbuf), NULL, NULL, _gtk_marshal_VOID__BOXED_OBJECT, G_TYPE_NONE, 2, GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE, GDK_TYPE_PIXBUF); /** * GtkTextBuffer::insert-child-anchor: * @textbuffer: the object which received the signal * @location: position to insert @anchor in @textbuffer * @anchor: the #GtkTextChildAnchor to be inserted * * The ::insert-child-anchor signal is emitted to insert a * #GtkTextChildAnchor in a #GtkTextBuffer. * Insertion actually occurs in the default handler. * * Note that if your handler runs before the default handler it must * not invalidate the @location iter (or has to revalidate it). * The default signal handler revalidates it to be placed after the * inserted @anchor. * * See also: gtk_text_buffer_insert_child_anchor(). */ signals[INSERT_CHILD_ANCHOR] = g_signal_new (I_("insert-child-anchor"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, insert_child_anchor), NULL, NULL, _gtk_marshal_VOID__BOXED_OBJECT, G_TYPE_NONE, 2, GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE, GTK_TYPE_TEXT_CHILD_ANCHOR); /** * GtkTextBuffer::delete-range: * @textbuffer: the object which received the signal * @start: the start of the range to be deleted * @end: the end of the range to be deleted * * The ::delete-range signal is emitted to delete a range * from a #GtkTextBuffer. * * Note that if your handler runs before the default handler it must not * invalidate the @start and @end iters (or has to revalidate them). * The default signal handler revalidates the @start and @end iters to * both point to the location where text was deleted. Handlers * which run after the default handler (see g_signal_connect_after()) * do not have access to the deleted text. * * See also: gtk_text_buffer_delete(). */ signals[DELETE_RANGE] = g_signal_new (I_("delete-range"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, delete_range), NULL, NULL, _gtk_marshal_VOID__BOXED_BOXED, G_TYPE_NONE, 2, GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE, GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE); /** * GtkTextBuffer::changed: * @textbuffer: the object which received the signal * * The ::changed signal is emitted when the content of a #GtkTextBuffer * has changed. */ signals[CHANGED] = g_signal_new (I_("changed"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, changed), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * GtkTextBuffer::modified-changed: * @textbuffer: the object which received the signal * * The ::modified-changed signal is emitted when the modified bit of a * #GtkTextBuffer flips. * * See also: * gtk_text_buffer_set_modified(). */ signals[MODIFIED_CHANGED] = g_signal_new (I_("modified-changed"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, modified_changed), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * GtkTextBuffer::mark-set: * @textbuffer: the object which received the signal * @location: The location of @mark in @textbuffer * @mark: The mark that is set * * The ::mark-set signal is emitted as notification * after a #GtkTextMark is set. * * See also: * gtk_text_buffer_create_mark(), * gtk_text_buffer_move_mark(). */ signals[MARK_SET] = g_signal_new (I_("mark-set"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, mark_set), NULL, NULL, _gtk_marshal_VOID__BOXED_OBJECT, G_TYPE_NONE, 2, GTK_TYPE_TEXT_ITER, GTK_TYPE_TEXT_MARK); /** * GtkTextBuffer::mark-deleted: * @textbuffer: the object which received the signal * @mark: The mark that was deleted * * The ::mark-deleted signal is emitted as notification * after a #GtkTextMark is deleted. * * See also: * gtk_text_buffer_delete_mark(). */ signals[MARK_DELETED] = g_signal_new (I_("mark-deleted"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, mark_deleted), NULL, NULL, _gtk_marshal_VOID__OBJECT, G_TYPE_NONE, 1, GTK_TYPE_TEXT_MARK); /** * GtkTextBuffer::apply-tag: * @textbuffer: the object which received the signal * @tag: the applied tag * @start: the start of the range the tag is applied to * @end: the end of the range the tag is applied to * * The ::apply-tag signal is emitted to apply a tag to a * range of text in a #GtkTextBuffer. * Applying actually occurs in the default handler. * * Note that if your handler runs before the default handler it must not * invalidate the @start and @end iters (or has to revalidate them). * * See also: * gtk_text_buffer_apply_tag(), * gtk_text_buffer_insert_with_tags(), * gtk_text_buffer_insert_range(). */ signals[APPLY_TAG] = g_signal_new (I_("apply-tag"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, apply_tag), NULL, NULL, _gtk_marshal_VOID__OBJECT_BOXED_BOXED, G_TYPE_NONE, 3, GTK_TYPE_TEXT_TAG, GTK_TYPE_TEXT_ITER, GTK_TYPE_TEXT_ITER); /** * GtkTextBuffer::remove-tag: * @textbuffer: the object which received the signal * @tag: the tag to be removed * @start: the start of the range the tag is removed from * @end: the end of the range the tag is removed from * * The ::remove-tag signal is emitted to remove all occurrences of @tag from * a range of text in a #GtkTextBuffer. * Removal actually occurs in the default handler. * * Note that if your handler runs before the default handler it must not * invalidate the @start and @end iters (or has to revalidate them). * * See also: * gtk_text_buffer_remove_tag(). */ signals[REMOVE_TAG] = g_signal_new (I_("remove-tag"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, remove_tag), NULL, NULL, _gtk_marshal_VOID__OBJECT_BOXED_BOXED, G_TYPE_NONE, 3, GTK_TYPE_TEXT_TAG, GTK_TYPE_TEXT_ITER, GTK_TYPE_TEXT_ITER); /** * GtkTextBuffer::begin-user-action: * @textbuffer: the object which received the signal * * The ::begin-user-action signal is emitted at the beginning of a single * user-visible operation on a #GtkTextBuffer. * * See also: * gtk_text_buffer_begin_user_action(), * gtk_text_buffer_insert_interactive(), * gtk_text_buffer_insert_range_interactive(), * gtk_text_buffer_delete_interactive(), * gtk_text_buffer_backspace(), * gtk_text_buffer_delete_selection(). */ signals[BEGIN_USER_ACTION] = g_signal_new (I_("begin-user-action"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, begin_user_action), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * GtkTextBuffer::end-user-action: * @textbuffer: the object which received the signal * * The ::end-user-action signal is emitted at the end of a single * user-visible operation on the #GtkTextBuffer. * * See also: * gtk_text_buffer_end_user_action(), * gtk_text_buffer_insert_interactive(), * gtk_text_buffer_insert_range_interactive(), * gtk_text_buffer_delete_interactive(), * gtk_text_buffer_backspace(), * gtk_text_buffer_delete_selection(), * gtk_text_buffer_backspace(). */ signals[END_USER_ACTION] = g_signal_new (I_("end-user-action"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, end_user_action), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * GtkTextBuffer::paste-done: * @textbuffer: the object which received the signal * @clipboard: the #GtkClipboard pasted from * * The paste-done signal is emitted after paste operation has been completed. * This is useful to properly scroll the view to the end of the pasted text. * See gtk_text_buffer_paste_clipboard() for more details. * * Since: 2.16 */ signals[PASTE_DONE] = g_signal_new (I_("paste-done"), G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkTextBufferClass, paste_done), NULL, NULL, _gtk_marshal_VOID__OBJECT, G_TYPE_NONE, 1, GTK_TYPE_CLIPBOARD); } static void gtk_text_buffer_init (GtkTextBuffer *buffer) { buffer->priv = gtk_text_buffer_get_instance_private (buffer); buffer->priv->clipboard_contents_buffers = NULL; buffer->priv->tag_table = NULL; /* allow copying of arbiatray stuff in the internal rich text format */ gtk_text_buffer_register_serialize_tagset (buffer, NULL); } static void set_table (GtkTextBuffer *buffer, GtkTextTagTable *table) { GtkTextBufferPrivate *priv = buffer->priv; g_return_if_fail (priv->tag_table == NULL); if (table) { priv->tag_table = table; g_object_ref (priv->tag_table); _gtk_text_tag_table_add_buffer (table, buffer); } } static GtkTextTagTable* get_table (GtkTextBuffer *buffer) { GtkTextBufferPrivate *priv = buffer->priv; if (priv->tag_table == NULL) { priv->tag_table = gtk_text_tag_table_new (); _gtk_text_tag_table_add_buffer (priv->tag_table, buffer); } return priv->tag_table; } static void gtk_text_buffer_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkTextBuffer *text_buffer; text_buffer = GTK_TEXT_BUFFER (object); switch (prop_id) { case PROP_TAG_TABLE: set_table (text_buffer, g_value_get_object (value)); break; case PROP_TEXT: gtk_text_buffer_set_text (text_buffer, g_value_get_string (value), -1); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_text_buffer_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkTextBuffer *text_buffer; GtkTextIter iter; text_buffer = GTK_TEXT_BUFFER (object); switch (prop_id) { case PROP_TAG_TABLE: g_value_set_object (value, get_table (text_buffer)); break; case PROP_TEXT: { GtkTextIter start, end; gtk_text_buffer_get_start_iter (text_buffer, &start); gtk_text_buffer_get_end_iter (text_buffer, &end); g_value_take_string (value, gtk_text_buffer_get_text (text_buffer, &start, &end, FALSE)); break; } case PROP_HAS_SELECTION: g_value_set_boolean (value, text_buffer->priv->has_selection); break; case PROP_CURSOR_POSITION: gtk_text_buffer_get_iter_at_mark (text_buffer, &iter, gtk_text_buffer_get_insert (text_buffer)); g_value_set_int (value, gtk_text_iter_get_offset (&iter)); break; case PROP_COPY_TARGET_LIST: g_value_set_boxed (value, gtk_text_buffer_get_copy_target_list (text_buffer)); break; case PROP_PASTE_TARGET_LIST: g_value_set_boxed (value, gtk_text_buffer_get_paste_target_list (text_buffer)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_text_buffer_notify (GObject *object, GParamSpec *pspec) { if (!strcmp (pspec->name, "copy-target-list") || !strcmp (pspec->name, "paste-target-list")) { gtk_text_buffer_free_target_lists (GTK_TEXT_BUFFER (object)); } } /** * gtk_text_buffer_new: * @table: (allow-none): a tag table, or %NULL to create a new one * * Creates a new text buffer. * * Returns: a new text buffer **/ GtkTextBuffer* gtk_text_buffer_new (GtkTextTagTable *table) { GtkTextBuffer *text_buffer; text_buffer = g_object_new (GTK_TYPE_TEXT_BUFFER, "tag-table", table, NULL); return text_buffer; } static void gtk_text_buffer_finalize (GObject *object) { GtkTextBuffer *buffer; GtkTextBufferPrivate *priv; buffer = GTK_TEXT_BUFFER (object); priv = buffer->priv; remove_all_selection_clipboards (buffer); if (priv->tag_table) { _gtk_text_tag_table_remove_buffer (priv->tag_table, buffer); g_object_unref (priv->tag_table); priv->tag_table = NULL; } if (priv->btree) { _gtk_text_btree_unref (priv->btree); priv->btree = NULL; } if (priv->log_attr_cache) free_log_attr_cache (priv->log_attr_cache); priv->log_attr_cache = NULL; gtk_text_buffer_free_target_lists (buffer); G_OBJECT_CLASS (gtk_text_buffer_parent_class)->finalize (object); } static GtkTextBTree* get_btree (GtkTextBuffer *buffer) { GtkTextBufferPrivate *priv = buffer->priv; if (priv->btree == NULL) priv->btree = _gtk_text_btree_new (gtk_text_buffer_get_tag_table (buffer), buffer); return priv->btree; } GtkTextBTree* _gtk_text_buffer_get_btree (GtkTextBuffer *buffer) { return get_btree (buffer); } /** * gtk_text_buffer_get_tag_table: * @buffer: a #GtkTextBuffer * * Get the #GtkTextTagTable associated with this buffer. * * Returns: (transfer none): the buffer’s tag table **/ GtkTextTagTable* gtk_text_buffer_get_tag_table (GtkTextBuffer *buffer) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); return get_table (buffer); } /** * gtk_text_buffer_set_text: * @buffer: a #GtkTextBuffer * @text: UTF-8 text to insert * @len: length of @text in bytes * * Deletes current contents of @buffer, and inserts @text instead. If * @len is -1, @text must be nul-terminated. @text must be valid UTF-8. **/ void gtk_text_buffer_set_text (GtkTextBuffer *buffer, const gchar *text, gint len) { GtkTextIter start, end; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (text != NULL); if (len < 0) len = strlen (text); gtk_text_buffer_get_bounds (buffer, &start, &end); gtk_text_buffer_delete (buffer, &start, &end); if (len > 0) { gtk_text_buffer_get_iter_at_offset (buffer, &start, 0); gtk_text_buffer_insert (buffer, &start, text, len); } } /* * Insertion */ static void gtk_text_buffer_real_insert_text (GtkTextBuffer *buffer, GtkTextIter *iter, const gchar *text, gint len) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (iter != NULL); _gtk_text_btree_insert (iter, text, len); g_signal_emit (buffer, signals[CHANGED], 0); g_object_notify (G_OBJECT (buffer), "cursor-position"); } static void gtk_text_buffer_emit_insert (GtkTextBuffer *buffer, GtkTextIter *iter, const gchar *text, gint len) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (iter != NULL); g_return_if_fail (text != NULL); if (len < 0) len = strlen (text); g_return_if_fail (g_utf8_validate (text, len, NULL)); if (len > 0) { g_signal_emit (buffer, signals[INSERT_TEXT], 0, iter, text, len); } } /** * gtk_text_buffer_insert: * @buffer: a #GtkTextBuffer * @iter: a position in the buffer * @text: text in UTF-8 format * @len: length of text in bytes, or -1 * * Inserts @len bytes of @text at position @iter. If @len is -1, * @text must be nul-terminated and will be inserted in its * entirety. Emits the “insert-text” signal; insertion actually occurs * in the default handler for the signal. @iter is invalidated when * insertion occurs (because the buffer contents change), but the * default signal handler revalidates it to point to the end of the * inserted text. **/ void gtk_text_buffer_insert (GtkTextBuffer *buffer, GtkTextIter *iter, const gchar *text, gint len) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (iter != NULL); g_return_if_fail (text != NULL); g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); gtk_text_buffer_emit_insert (buffer, iter, text, len); } /** * gtk_text_buffer_insert_at_cursor: * @buffer: a #GtkTextBuffer * @text: text in UTF-8 format * @len: length of text, in bytes * * Simply calls gtk_text_buffer_insert(), using the current * cursor position as the insertion point. **/ void gtk_text_buffer_insert_at_cursor (GtkTextBuffer *buffer, const gchar *text, gint len) { GtkTextIter iter; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (text != NULL); gtk_text_buffer_get_iter_at_mark (buffer, &iter, gtk_text_buffer_get_insert (buffer)); gtk_text_buffer_insert (buffer, &iter, text, len); } /** * gtk_text_buffer_insert_interactive: * @buffer: a #GtkTextBuffer * @iter: a position in @buffer * @text: some UTF-8 text * @len: length of text in bytes, or -1 * @default_editable: default editability of buffer * * Like gtk_text_buffer_insert(), but the insertion will not occur if * @iter is at a non-editable location in the buffer. Usually you * want to prevent insertions at ineditable locations if the insertion * results from a user action (is interactive). * * @default_editable indicates the editability of text that doesn't * have a tag affecting editability applied to it. Typically the * result of gtk_text_view_get_editable() is appropriate here. * * Returns: whether text was actually inserted **/ gboolean gtk_text_buffer_insert_interactive (GtkTextBuffer *buffer, GtkTextIter *iter, const gchar *text, gint len, gboolean default_editable) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); g_return_val_if_fail (text != NULL, FALSE); g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, FALSE); if (gtk_text_iter_can_insert (iter, default_editable)) { gtk_text_buffer_begin_user_action (buffer); gtk_text_buffer_emit_insert (buffer, iter, text, len); gtk_text_buffer_end_user_action (buffer); return TRUE; } else return FALSE; } /** * gtk_text_buffer_insert_interactive_at_cursor: * @buffer: a #GtkTextBuffer * @text: text in UTF-8 format * @len: length of text in bytes, or -1 * @default_editable: default editability of buffer * * Calls gtk_text_buffer_insert_interactive() at the cursor * position. * * @default_editable indicates the editability of text that doesn't * have a tag affecting editability applied to it. Typically the * result of gtk_text_view_get_editable() is appropriate here. * * Returns: whether text was actually inserted **/ gboolean gtk_text_buffer_insert_interactive_at_cursor (GtkTextBuffer *buffer, const gchar *text, gint len, gboolean default_editable) { GtkTextIter iter; g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); g_return_val_if_fail (text != NULL, FALSE); gtk_text_buffer_get_iter_at_mark (buffer, &iter, gtk_text_buffer_get_insert (buffer)); return gtk_text_buffer_insert_interactive (buffer, &iter, text, len, default_editable); } static gboolean possibly_not_text (gunichar ch, gpointer user_data) { return ch == GTK_TEXT_UNKNOWN_CHAR; } static void insert_text_range (GtkTextBuffer *buffer, GtkTextIter *iter, const GtkTextIter *orig_start, const GtkTextIter *orig_end, gboolean interactive) { gchar *text; text = gtk_text_iter_get_text (orig_start, orig_end); gtk_text_buffer_emit_insert (buffer, iter, text, -1); g_free (text); } typedef struct _Range Range; struct _Range { GtkTextBuffer *buffer; GtkTextMark *start_mark; GtkTextMark *end_mark; GtkTextMark *whole_end_mark; GtkTextIter *range_start; GtkTextIter *range_end; GtkTextIter *whole_end; }; static Range* save_range (GtkTextIter *range_start, GtkTextIter *range_end, GtkTextIter *whole_end) { Range *r; r = g_slice_new (Range); r->buffer = gtk_text_iter_get_buffer (range_start); g_object_ref (r->buffer); r->start_mark = gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (range_start), NULL, range_start, FALSE); r->end_mark = gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (range_start), NULL, range_end, TRUE); r->whole_end_mark = gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (range_start), NULL, whole_end, TRUE); r->range_start = range_start; r->range_end = range_end; r->whole_end = whole_end; return r; } static void restore_range (Range *r) { gtk_text_buffer_get_iter_at_mark (r->buffer, r->range_start, r->start_mark); gtk_text_buffer_get_iter_at_mark (r->buffer, r->range_end, r->end_mark); gtk_text_buffer_get_iter_at_mark (r->buffer, r->whole_end, r->whole_end_mark); gtk_text_buffer_delete_mark (r->buffer, r->start_mark); gtk_text_buffer_delete_mark (r->buffer, r->end_mark); gtk_text_buffer_delete_mark (r->buffer, r->whole_end_mark); /* Due to the gravities on the marks, the ordering could have * gotten mangled; we switch to an empty range in that * case */ if (gtk_text_iter_compare (r->range_start, r->range_end) > 0) *r->range_start = *r->range_end; if (gtk_text_iter_compare (r->range_end, r->whole_end) > 0) *r->range_end = *r->whole_end; g_object_unref (r->buffer); g_slice_free (Range, r); } static void insert_range_untagged (GtkTextBuffer *buffer, GtkTextIter *iter, const GtkTextIter *orig_start, const GtkTextIter *orig_end, gboolean interactive) { GtkTextIter range_start; GtkTextIter range_end; GtkTextIter start, end; Range *r; if (gtk_text_iter_equal (orig_start, orig_end)) return; start = *orig_start; end = *orig_end; range_start = start; range_end = start; while (TRUE) { if (gtk_text_iter_equal (&range_start, &range_end)) { /* Figure out how to move forward */ g_assert (gtk_text_iter_compare (&range_end, &end) <= 0); if (gtk_text_iter_equal (&range_end, &end)) { /* nothing left to do */ break; } else if (gtk_text_iter_get_char (&range_end) == GTK_TEXT_UNKNOWN_CHAR) { GdkPixbuf *pixbuf = NULL; GtkTextChildAnchor *anchor = NULL; pixbuf = gtk_text_iter_get_pixbuf (&range_end); anchor = gtk_text_iter_get_child_anchor (&range_end); if (pixbuf) { r = save_range (&range_start, &range_end, &end); gtk_text_buffer_insert_pixbuf (buffer, iter, pixbuf); restore_range (r); r = NULL; gtk_text_iter_forward_char (&range_end); range_start = range_end; } else if (anchor) { /* Just skip anchors */ gtk_text_iter_forward_char (&range_end); range_start = range_end; } else { /* The GTK_TEXT_UNKNOWN_CHAR was in a text segment, so * keep going. */ gtk_text_iter_forward_find_char (&range_end, possibly_not_text, NULL, &end); g_assert (gtk_text_iter_compare (&range_end, &end) <= 0); } } else { /* Text segment starts here, so forward search to * find its possible endpoint */ gtk_text_iter_forward_find_char (&range_end, possibly_not_text, NULL, &end); g_assert (gtk_text_iter_compare (&range_end, &end) <= 0); } } else { r = save_range (&range_start, &range_end, &end); insert_text_range (buffer, iter, &range_start, &range_end, interactive); restore_range (r); r = NULL; range_start = range_end; } } } static void insert_range_not_inside_self (GtkTextBuffer *buffer, GtkTextIter *iter, const GtkTextIter *orig_start, const GtkTextIter *orig_end, gboolean interactive) { /* Find each range of uniformly-tagged text, insert it, * then apply the tags. */ GtkTextIter start = *orig_start; GtkTextIter end = *orig_end; GtkTextIter range_start; GtkTextIter range_end; if (gtk_text_iter_equal (orig_start, orig_end)) return; gtk_text_iter_order (&start, &end); range_start = start; range_end = start; while (TRUE) { gint start_offset; GtkTextIter start_iter; GSList *tags; GSList *tmp_list; Range *r; if (gtk_text_iter_equal (&range_start, &end)) break; /* All done */ g_assert (gtk_text_iter_compare (&range_start, &end) < 0); gtk_text_iter_forward_to_tag_toggle (&range_end, NULL); g_assert (!gtk_text_iter_equal (&range_start, &range_end)); /* Clamp to the end iterator */ if (gtk_text_iter_compare (&range_end, &end) > 0) range_end = end; /* We have a range with unique tags; insert it, and * apply all tags. */ start_offset = gtk_text_iter_get_offset (iter); r = save_range (&range_start, &range_end, &end); insert_range_untagged (buffer, iter, &range_start, &range_end, interactive); restore_range (r); r = NULL; gtk_text_buffer_get_iter_at_offset (buffer, &start_iter, start_offset); tags = gtk_text_iter_get_tags (&range_start); tmp_list = tags; while (tmp_list != NULL) { gtk_text_buffer_apply_tag (buffer, tmp_list->data, &start_iter, iter); tmp_list = g_slist_next (tmp_list); } g_slist_free (tags); range_start = range_end; } } static void gtk_text_buffer_real_insert_range (GtkTextBuffer *buffer, GtkTextIter *iter, const GtkTextIter *orig_start, const GtkTextIter *orig_end, gboolean interactive) { GtkTextBuffer *src_buffer; /* Find each range of uniformly-tagged text, insert it, * then apply the tags. */ if (gtk_text_iter_equal (orig_start, orig_end)) return; if (interactive) gtk_text_buffer_begin_user_action (buffer); src_buffer = gtk_text_iter_get_buffer (orig_start); if (gtk_text_iter_get_buffer (iter) != src_buffer || !gtk_text_iter_in_range (iter, orig_start, orig_end)) { insert_range_not_inside_self (buffer, iter, orig_start, orig_end, interactive); } else { /* If you insert a range into itself, it could loop infinitely * because the region being copied keeps growing as we insert. So * we have to separately copy the range before and after * the insertion point. */ GtkTextIter start = *orig_start; GtkTextIter end = *orig_end; GtkTextIter range_start; GtkTextIter range_end; Range *first_half; Range *second_half; gtk_text_iter_order (&start, &end); range_start = start; range_end = *iter; first_half = save_range (&range_start, &range_end, &end); range_start = *iter; range_end = end; second_half = save_range (&range_start, &range_end, &end); restore_range (first_half); insert_range_not_inside_self (buffer, iter, &range_start, &range_end, interactive); restore_range (second_half); insert_range_not_inside_self (buffer, iter, &range_start, &range_end, interactive); } if (interactive) gtk_text_buffer_end_user_action (buffer); } /** * gtk_text_buffer_insert_range: * @buffer: a #GtkTextBuffer * @iter: a position in @buffer * @start: a position in a #GtkTextBuffer * @end: another position in the same buffer as @start * * Copies text, tags, and pixbufs between @start and @end (the order * of @start and @end doesn’t matter) and inserts the copy at @iter. * Used instead of simply getting/inserting text because it preserves * images and tags. If @start and @end are in a different buffer from * @buffer, the two buffers must share the same tag table. * * Implemented via emissions of the insert_text and apply_tag signals, * so expect those. **/ void gtk_text_buffer_insert_range (GtkTextBuffer *buffer, GtkTextIter *iter, const GtkTextIter *start, const GtkTextIter *end) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (iter != NULL); g_return_if_fail (start != NULL); g_return_if_fail (end != NULL); g_return_if_fail (gtk_text_iter_get_buffer (start) == gtk_text_iter_get_buffer (end)); g_return_if_fail (gtk_text_iter_get_buffer (start)->priv->tag_table == buffer->priv->tag_table); g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); gtk_text_buffer_real_insert_range (buffer, iter, start, end, FALSE); } /** * gtk_text_buffer_insert_range_interactive: * @buffer: a #GtkTextBuffer * @iter: a position in @buffer * @start: a position in a #GtkTextBuffer * @end: another position in the same buffer as @start * @default_editable: default editability of the buffer * * Same as gtk_text_buffer_insert_range(), but does nothing if the * insertion point isn’t editable. The @default_editable parameter * indicates whether the text is editable at @iter if no tags * enclosing @iter affect editability. Typically the result of * gtk_text_view_get_editable() is appropriate here. * * Returns: whether an insertion was possible at @iter **/ gboolean gtk_text_buffer_insert_range_interactive (GtkTextBuffer *buffer, GtkTextIter *iter, const GtkTextIter *start, const GtkTextIter *end, gboolean default_editable) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); g_return_val_if_fail (iter != NULL, FALSE); g_return_val_if_fail (start != NULL, FALSE); g_return_val_if_fail (end != NULL, FALSE); g_return_val_if_fail (gtk_text_iter_get_buffer (start) == gtk_text_iter_get_buffer (end), FALSE); g_return_val_if_fail (gtk_text_iter_get_buffer (start)->priv->tag_table == buffer->priv->tag_table, FALSE); if (gtk_text_iter_can_insert (iter, default_editable)) { gtk_text_buffer_real_insert_range (buffer, iter, start, end, TRUE); return TRUE; } else return FALSE; } /** * gtk_text_buffer_insert_with_tags: * @buffer: a #GtkTextBuffer * @iter: an iterator in @buffer * @text: UTF-8 text * @len: length of @text, or -1 * @first_tag: first tag to apply to @text * @...: %NULL-terminated list of tags to apply * * Inserts @text into @buffer at @iter, applying the list of tags to * the newly-inserted text. The last tag specified must be %NULL to * terminate the list. Equivalent to calling gtk_text_buffer_insert(), * then gtk_text_buffer_apply_tag() on the inserted text; * gtk_text_buffer_insert_with_tags() is just a convenience function. **/ void gtk_text_buffer_insert_with_tags (GtkTextBuffer *buffer, GtkTextIter *iter, const gchar *text, gint len, GtkTextTag *first_tag, ...) { gint start_offset; GtkTextIter start; va_list args; GtkTextTag *tag; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (iter != NULL); g_return_if_fail (text != NULL); g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); start_offset = gtk_text_iter_get_offset (iter); gtk_text_buffer_insert (buffer, iter, text, len); if (first_tag == NULL) return; gtk_text_buffer_get_iter_at_offset (buffer, &start, start_offset); va_start (args, first_tag); tag = first_tag; while (tag) { gtk_text_buffer_apply_tag (buffer, tag, &start, iter); tag = va_arg (args, GtkTextTag*); } va_end (args); } /** * gtk_text_buffer_insert_with_tags_by_name: * @buffer: a #GtkTextBuffer * @iter: position in @buffer * @text: UTF-8 text * @len: length of @text, or -1 * @first_tag_name: name of a tag to apply to @text * @...: more tag names * * Same as gtk_text_buffer_insert_with_tags(), but allows you * to pass in tag names instead of tag objects. **/ void gtk_text_buffer_insert_with_tags_by_name (GtkTextBuffer *buffer, GtkTextIter *iter, const gchar *text, gint len, const gchar *first_tag_name, ...) { gint start_offset; GtkTextIter start; va_list args; const gchar *tag_name; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (iter != NULL); g_return_if_fail (text != NULL); g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); start_offset = gtk_text_iter_get_offset (iter); gtk_text_buffer_insert (buffer, iter, text, len); if (first_tag_name == NULL) return; gtk_text_buffer_get_iter_at_offset (buffer, &start, start_offset); va_start (args, first_tag_name); tag_name = first_tag_name; while (tag_name) { GtkTextTag *tag; tag = gtk_text_tag_table_lookup (buffer->priv->tag_table, tag_name); if (tag == NULL) { g_warning ("%s: no tag with name '%s'!", G_STRLOC, tag_name); va_end (args); return; } gtk_text_buffer_apply_tag (buffer, tag, &start, iter); tag_name = va_arg (args, const gchar*); } va_end (args); } /* * Deletion */ static void gtk_text_buffer_real_delete_range (GtkTextBuffer *buffer, GtkTextIter *start, GtkTextIter *end) { gboolean has_selection; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (start != NULL); g_return_if_fail (end != NULL); _gtk_text_btree_delete (start, end); /* may have deleted the selection... */ update_selection_clipboards (buffer); has_selection = gtk_text_buffer_get_selection_bounds (buffer, NULL, NULL); if (has_selection != buffer->priv->has_selection) { buffer->priv->has_selection = has_selection; g_object_notify (G_OBJECT (buffer), "has-selection"); } g_signal_emit (buffer, signals[CHANGED], 0); g_object_notify (G_OBJECT (buffer), "cursor-position"); } static void gtk_text_buffer_emit_delete (GtkTextBuffer *buffer, GtkTextIter *start, GtkTextIter *end) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (start != NULL); g_return_if_fail (end != NULL); if (gtk_text_iter_equal (start, end)) return; gtk_text_iter_order (start, end); g_signal_emit (buffer, signals[DELETE_RANGE], 0, start, end); } /** * gtk_text_buffer_delete: * @buffer: a #GtkTextBuffer * @start: a position in @buffer * @end: another position in @buffer * * Deletes text between @start and @end. The order of @start and @end * is not actually relevant; gtk_text_buffer_delete() will reorder * them. This function actually emits the “delete-range” signal, and * the default handler of that signal deletes the text. Because the * buffer is modified, all outstanding iterators become invalid after * calling this function; however, the @start and @end will be * re-initialized to point to the location where text was deleted. **/ void gtk_text_buffer_delete (GtkTextBuffer *buffer, GtkTextIter *start, GtkTextIter *end) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (start != NULL); g_return_if_fail (end != NULL); g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); gtk_text_buffer_emit_delete (buffer, start, end); } /** * gtk_text_buffer_delete_interactive: * @buffer: a #GtkTextBuffer * @start_iter: start of range to delete * @end_iter: end of range * @default_editable: whether the buffer is editable by default * * Deletes all editable text in the given range. * Calls gtk_text_buffer_delete() for each editable sub-range of * [@start,@end). @start and @end are revalidated to point to * the location of the last deleted range, or left untouched if * no text was deleted. * * Returns: whether some text was actually deleted **/ gboolean gtk_text_buffer_delete_interactive (GtkTextBuffer *buffer, GtkTextIter *start_iter, GtkTextIter *end_iter, gboolean default_editable) { GtkTextMark *end_mark; GtkTextMark *start_mark; GtkTextIter iter; gboolean current_state; gboolean deleted_stuff = FALSE; /* Delete all editable text in the range start_iter, end_iter */ g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); g_return_val_if_fail (start_iter != NULL, FALSE); g_return_val_if_fail (end_iter != NULL, FALSE); g_return_val_if_fail (gtk_text_iter_get_buffer (start_iter) == buffer, FALSE); g_return_val_if_fail (gtk_text_iter_get_buffer (end_iter) == buffer, FALSE); gtk_text_buffer_begin_user_action (buffer); gtk_text_iter_order (start_iter, end_iter); start_mark = gtk_text_buffer_create_mark (buffer, NULL, start_iter, TRUE); end_mark = gtk_text_buffer_create_mark (buffer, NULL, end_iter, FALSE); gtk_text_buffer_get_iter_at_mark (buffer, &iter, start_mark); current_state = gtk_text_iter_editable (&iter, default_editable); while (TRUE) { gboolean new_state; gboolean done = FALSE; GtkTextIter end; gtk_text_iter_forward_to_tag_toggle (&iter, NULL); gtk_text_buffer_get_iter_at_mark (buffer, &end, end_mark); if (gtk_text_iter_compare (&iter, &end) >= 0) { done = TRUE; iter = end; /* clamp to the last boundary */ } new_state = gtk_text_iter_editable (&iter, default_editable); if (current_state == new_state) { if (done) { if (current_state) { /* We're ending an editable region. Delete said region. */ GtkTextIter start; gtk_text_buffer_get_iter_at_mark (buffer, &start, start_mark); gtk_text_buffer_emit_delete (buffer, &start, &iter); deleted_stuff = TRUE; /* revalidate user's iterators. */ *start_iter = start; *end_iter = iter; } break; } else continue; } if (current_state && !new_state) { /* End of an editable region. Delete it. */ GtkTextIter start; gtk_text_buffer_get_iter_at_mark (buffer, &start, start_mark); gtk_text_buffer_emit_delete (buffer, &start, &iter); /* It's more robust to ask for the state again then to assume that * we're on the next not-editable segment. We don't know what the * ::delete-range handler did.... maybe it deleted the following * not-editable segment because it was associated with the editable * segment. */ current_state = gtk_text_iter_editable (&iter, default_editable); deleted_stuff = TRUE; /* revalidate user's iterators. */ *start_iter = start; *end_iter = iter; } else { /* We are at the start of an editable region. We won't be deleting * the previous region. Move start mark to start of this region. */ g_assert (!current_state && new_state); gtk_text_buffer_move_mark (buffer, start_mark, &iter); current_state = TRUE; } if (done) break; } gtk_text_buffer_delete_mark (buffer, start_mark); gtk_text_buffer_delete_mark (buffer, end_mark); gtk_text_buffer_end_user_action (buffer); return deleted_stuff; } /* * Extracting textual buffer contents */ /** * gtk_text_buffer_get_text: * @buffer: a #GtkTextBuffer * @start: start of a range * @end: end of a range * @include_hidden_chars: whether to include invisible text * * Returns the text in the range [@start,@end). Excludes undisplayed * text (text marked with tags that set the invisibility attribute) if * @include_hidden_chars is %FALSE. Does not include characters * representing embedded images, so byte and character indexes into * the returned string do not correspond to byte * and character indexes into the buffer. Contrast with * gtk_text_buffer_get_slice(). * * Returns: an allocated UTF-8 string **/ gchar* gtk_text_buffer_get_text (GtkTextBuffer *buffer, const GtkTextIter *start, const GtkTextIter *end, gboolean include_hidden_chars) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); g_return_val_if_fail (start != NULL, NULL); g_return_val_if_fail (end != NULL, NULL); g_return_val_if_fail (gtk_text_iter_get_buffer (start) == buffer, NULL); g_return_val_if_fail (gtk_text_iter_get_buffer (end) == buffer, NULL); if (include_hidden_chars) return gtk_text_iter_get_text (start, end); else return gtk_text_iter_get_visible_text (start, end); } /** * gtk_text_buffer_get_slice: * @buffer: a #GtkTextBuffer * @start: start of a range * @end: end of a range * @include_hidden_chars: whether to include invisible text * * Returns the text in the range [@start,@end). Excludes undisplayed * text (text marked with tags that set the invisibility attribute) if * @include_hidden_chars is %FALSE. The returned string includes a * 0xFFFC character whenever the buffer contains * embedded images, so byte and character indexes into * the returned string do correspond to byte * and character indexes into the buffer. Contrast with * gtk_text_buffer_get_text(). Note that 0xFFFC can occur in normal * text as well, so it is not a reliable indicator that a pixbuf or * widget is in the buffer. * * Returns: an allocated UTF-8 string **/ gchar* gtk_text_buffer_get_slice (GtkTextBuffer *buffer, const GtkTextIter *start, const GtkTextIter *end, gboolean include_hidden_chars) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); g_return_val_if_fail (start != NULL, NULL); g_return_val_if_fail (end != NULL, NULL); g_return_val_if_fail (gtk_text_iter_get_buffer (start) == buffer, NULL); g_return_val_if_fail (gtk_text_iter_get_buffer (end) == buffer, NULL); if (include_hidden_chars) return gtk_text_iter_get_slice (start, end); else return gtk_text_iter_get_visible_slice (start, end); } /* * Pixbufs */ static void gtk_text_buffer_real_insert_pixbuf (GtkTextBuffer *buffer, GtkTextIter *iter, GdkPixbuf *pixbuf) { _gtk_text_btree_insert_pixbuf (iter, pixbuf); g_signal_emit (buffer, signals[CHANGED], 0); } /** * gtk_text_buffer_insert_pixbuf: * @buffer: a #GtkTextBuffer * @iter: location to insert the pixbuf * @pixbuf: a #GdkPixbuf * * Inserts an image into the text buffer at @iter. The image will be * counted as one character in character counts, and when obtaining * the buffer contents as a string, will be represented by the Unicode * “object replacement character” 0xFFFC. Note that the “slice” * variants for obtaining portions of the buffer as a string include * this character for pixbufs, but the “text” variants do * not. e.g. see gtk_text_buffer_get_slice() and * gtk_text_buffer_get_text(). **/ void gtk_text_buffer_insert_pixbuf (GtkTextBuffer *buffer, GtkTextIter *iter, GdkPixbuf *pixbuf) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (iter != NULL); g_return_if_fail (GDK_IS_PIXBUF (pixbuf)); g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); g_signal_emit (buffer, signals[INSERT_PIXBUF], 0, iter, pixbuf); } /* * Child anchor */ static void gtk_text_buffer_real_insert_anchor (GtkTextBuffer *buffer, GtkTextIter *iter, GtkTextChildAnchor *anchor) { _gtk_text_btree_insert_child_anchor (iter, anchor); g_signal_emit (buffer, signals[CHANGED], 0); } /** * gtk_text_buffer_insert_child_anchor: * @buffer: a #GtkTextBuffer * @iter: location to insert the anchor * @anchor: a #GtkTextChildAnchor * * Inserts a child widget anchor into the text buffer at @iter. The * anchor will be counted as one character in character counts, and * when obtaining the buffer contents as a string, will be represented * by the Unicode “object replacement character” 0xFFFC. Note that the * “slice” variants for obtaining portions of the buffer as a string * include this character for child anchors, but the “text” variants do * not. E.g. see gtk_text_buffer_get_slice() and * gtk_text_buffer_get_text(). Consider * gtk_text_buffer_create_child_anchor() as a more convenient * alternative to this function. The buffer will add a reference to * the anchor, so you can unref it after insertion. **/ void gtk_text_buffer_insert_child_anchor (GtkTextBuffer *buffer, GtkTextIter *iter, GtkTextChildAnchor *anchor) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (iter != NULL); g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor)); g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); g_signal_emit (buffer, signals[INSERT_CHILD_ANCHOR], 0, iter, anchor); } /** * gtk_text_buffer_create_child_anchor: * @buffer: a #GtkTextBuffer * @iter: location in the buffer * * This is a convenience function which simply creates a child anchor * with gtk_text_child_anchor_new() and inserts it into the buffer * with gtk_text_buffer_insert_child_anchor(). The new anchor is * owned by the buffer; no reference count is returned to * the caller of gtk_text_buffer_create_child_anchor(). * * Returns: (transfer none): the created child anchor **/ GtkTextChildAnchor* gtk_text_buffer_create_child_anchor (GtkTextBuffer *buffer, GtkTextIter *iter) { GtkTextChildAnchor *anchor; g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); g_return_val_if_fail (iter != NULL, NULL); g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, NULL); anchor = gtk_text_child_anchor_new (); gtk_text_buffer_insert_child_anchor (buffer, iter, anchor); g_object_unref (anchor); return anchor; } /* * Mark manipulation */ static void gtk_text_buffer_mark_set (GtkTextBuffer *buffer, const GtkTextIter *location, GtkTextMark *mark) { /* IMO this should NOT work like insert_text and delete_range, * where the real action happens in the default handler. * * The reason is that the default handler would be _required_, * i.e. the whole widget would start breaking and segfaulting if the * default handler didn't get run. So you can't really override the * default handler or stop the emission; that is, this signal is * purely for notification, and not to allow users to modify the * default behavior. */ g_object_ref (mark); g_signal_emit (buffer, signals[MARK_SET], 0, location, mark); g_object_unref (mark); } /** * gtk_text_buffer_set_mark: * @buffer: a #GtkTextBuffer * @mark_name: name of the mark * @iter: location for the mark * @left_gravity: if the mark is created by this function, gravity for * the new mark * @should_exist: if %TRUE, warn if the mark does not exist, and return * immediately * * Move the mark to the given position, if not @should_exist, * create the mark. * * Returns: mark **/ static GtkTextMark* gtk_text_buffer_set_mark (GtkTextBuffer *buffer, GtkTextMark *existing_mark, const gchar *mark_name, const GtkTextIter *iter, gboolean left_gravity, gboolean should_exist) { GtkTextIter location; GtkTextMark *mark; g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, NULL); mark = _gtk_text_btree_set_mark (get_btree (buffer), existing_mark, mark_name, left_gravity, iter, should_exist); _gtk_text_btree_get_iter_at_mark (get_btree (buffer), &location, mark); gtk_text_buffer_mark_set (buffer, &location, mark); return mark; } /** * gtk_text_buffer_create_mark: * @buffer: a #GtkTextBuffer * @mark_name: (allow-none): name for mark, or %NULL * @where: location to place mark * @left_gravity: whether the mark has left gravity * * Creates a mark at position @where. If @mark_name is %NULL, the mark * is anonymous; otherwise, the mark can be retrieved by name using * gtk_text_buffer_get_mark(). If a mark has left gravity, and text is * inserted at the mark’s current location, the mark will be moved to * the left of the newly-inserted text. If the mark has right gravity * (@left_gravity = %FALSE), the mark will end up on the right of * newly-inserted text. The standard left-to-right cursor is a mark * with right gravity (when you type, the cursor stays on the right * side of the text you’re typing). * * The caller of this function does not own a * reference to the returned #GtkTextMark, so you can ignore the * return value if you like. Marks are owned by the buffer and go * away when the buffer does. * * Emits the #GtkTextBuffer::mark-set signal as notification of the mark's * initial placement. * * Returns: (transfer none): the new #GtkTextMark object **/ GtkTextMark* gtk_text_buffer_create_mark (GtkTextBuffer *buffer, const gchar *mark_name, const GtkTextIter *where, gboolean left_gravity) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); return gtk_text_buffer_set_mark (buffer, NULL, mark_name, where, left_gravity, FALSE); } /** * gtk_text_buffer_add_mark: * @buffer: a #GtkTextBuffer * @mark: the mark to add * @where: location to place mark * * Adds the mark at position @where. The mark must not be added to * another buffer, and if its name is not %NULL then there must not * be another mark in the buffer with the same name. * * Emits the #GtkTextBuffer::mark-set signal as notification of the mark's * initial placement. * * Since: 2.12 **/ void gtk_text_buffer_add_mark (GtkTextBuffer *buffer, GtkTextMark *mark, const GtkTextIter *where) { const gchar *name; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (GTK_IS_TEXT_MARK (mark)); g_return_if_fail (where != NULL); g_return_if_fail (gtk_text_mark_get_buffer (mark) == NULL); name = gtk_text_mark_get_name (mark); if (name != NULL && gtk_text_buffer_get_mark (buffer, name) != NULL) { g_critical ("Mark %s already exists in the buffer", name); return; } gtk_text_buffer_set_mark (buffer, mark, NULL, where, FALSE, FALSE); } /** * gtk_text_buffer_move_mark: * @buffer: a #GtkTextBuffer * @mark: a #GtkTextMark * @where: new location for @mark in @buffer * * Moves @mark to the new location @where. Emits the #GtkTextBuffer::mark-set * signal as notification of the move. **/ void gtk_text_buffer_move_mark (GtkTextBuffer *buffer, GtkTextMark *mark, const GtkTextIter *where) { g_return_if_fail (GTK_IS_TEXT_MARK (mark)); g_return_if_fail (!gtk_text_mark_get_deleted (mark)); g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); gtk_text_buffer_set_mark (buffer, mark, NULL, where, FALSE, TRUE); } /** * gtk_text_buffer_get_iter_at_mark: * @buffer: a #GtkTextBuffer * @iter: (out): iterator to initialize * @mark: a #GtkTextMark in @buffer * * Initializes @iter with the current position of @mark. **/ void gtk_text_buffer_get_iter_at_mark (GtkTextBuffer *buffer, GtkTextIter *iter, GtkTextMark *mark) { g_return_if_fail (GTK_IS_TEXT_MARK (mark)); g_return_if_fail (!gtk_text_mark_get_deleted (mark)); g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); _gtk_text_btree_get_iter_at_mark (get_btree (buffer), iter, mark); } /** * gtk_text_buffer_delete_mark: * @buffer: a #GtkTextBuffer * @mark: a #GtkTextMark in @buffer * * Deletes @mark, so that it’s no longer located anywhere in the * buffer. Removes the reference the buffer holds to the mark, so if * you haven’t called g_object_ref() on the mark, it will be freed. Even * if the mark isn’t freed, most operations on @mark become * invalid, until it gets added to a buffer again with * gtk_text_buffer_add_mark(). Use gtk_text_mark_get_deleted() to * find out if a mark has been removed from its buffer. * The #GtkTextBuffer::mark-deleted signal will be emitted as notification after * the mark is deleted. **/ void gtk_text_buffer_delete_mark (GtkTextBuffer *buffer, GtkTextMark *mark) { g_return_if_fail (GTK_IS_TEXT_MARK (mark)); g_return_if_fail (!gtk_text_mark_get_deleted (mark)); g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_object_ref (mark); _gtk_text_btree_remove_mark (get_btree (buffer), mark); /* See rationale above for MARK_SET on why we emit this after * removing the mark, rather than removing the mark in a default * handler. */ g_signal_emit (buffer, signals[MARK_DELETED], 0, mark); g_object_unref (mark); } /** * gtk_text_buffer_get_mark: * @buffer: a #GtkTextBuffer * @name: a mark name * * Returns the mark named @name in buffer @buffer, or %NULL if no such * mark exists in the buffer. * * Returns: (transfer none): a #GtkTextMark, or %NULL **/ GtkTextMark* gtk_text_buffer_get_mark (GtkTextBuffer *buffer, const gchar *name) { GtkTextMark *mark; g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); g_return_val_if_fail (name != NULL, NULL); mark = _gtk_text_btree_get_mark_by_name (get_btree (buffer), name); return mark; } /** * gtk_text_buffer_move_mark_by_name: * @buffer: a #GtkTextBuffer * @name: name of a mark * @where: new location for mark * * Moves the mark named @name (which must exist) to location @where. * See gtk_text_buffer_move_mark() for details. **/ void gtk_text_buffer_move_mark_by_name (GtkTextBuffer *buffer, const gchar *name, const GtkTextIter *where) { GtkTextMark *mark; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (name != NULL); mark = _gtk_text_btree_get_mark_by_name (get_btree (buffer), name); if (mark == NULL) { g_warning ("%s: no mark named '%s'", G_STRLOC, name); return; } gtk_text_buffer_move_mark (buffer, mark, where); } /** * gtk_text_buffer_delete_mark_by_name: * @buffer: a #GtkTextBuffer * @name: name of a mark in @buffer * * Deletes the mark named @name; the mark must exist. See * gtk_text_buffer_delete_mark() for details. **/ void gtk_text_buffer_delete_mark_by_name (GtkTextBuffer *buffer, const gchar *name) { GtkTextMark *mark; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (name != NULL); mark = _gtk_text_btree_get_mark_by_name (get_btree (buffer), name); if (mark == NULL) { g_warning ("%s: no mark named '%s'", G_STRLOC, name); return; } gtk_text_buffer_delete_mark (buffer, mark); } /** * gtk_text_buffer_get_insert: * @buffer: a #GtkTextBuffer * * Returns the mark that represents the cursor (insertion point). * Equivalent to calling gtk_text_buffer_get_mark() to get the mark * named “insert”, but very slightly more efficient, and involves less * typing. * * Returns: (transfer none): insertion point mark **/ GtkTextMark* gtk_text_buffer_get_insert (GtkTextBuffer *buffer) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); return _gtk_text_btree_get_insert (get_btree (buffer)); } /** * gtk_text_buffer_get_selection_bound: * @buffer: a #GtkTextBuffer * * Returns the mark that represents the selection bound. Equivalent * to calling gtk_text_buffer_get_mark() to get the mark named * “selection_bound”, but very slightly more efficient, and involves * less typing. * * The currently-selected text in @buffer is the region between the * “selection_bound” and “insert” marks. If “selection_bound” and * “insert” are in the same place, then there is no current selection. * gtk_text_buffer_get_selection_bounds() is another convenient function * for handling the selection, if you just want to know whether there’s a * selection and what its bounds are. * * Returns: (transfer none): selection bound mark **/ GtkTextMark* gtk_text_buffer_get_selection_bound (GtkTextBuffer *buffer) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); return _gtk_text_btree_get_selection_bound (get_btree (buffer)); } /** * gtk_text_buffer_get_iter_at_child_anchor: * @buffer: a #GtkTextBuffer * @iter: (out): an iterator to be initialized * @anchor: a child anchor that appears in @buffer * * Obtains the location of @anchor within @buffer. **/ void gtk_text_buffer_get_iter_at_child_anchor (GtkTextBuffer *buffer, GtkTextIter *iter, GtkTextChildAnchor *anchor) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (iter != NULL); g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor)); g_return_if_fail (!gtk_text_child_anchor_get_deleted (anchor)); _gtk_text_btree_get_iter_at_child_anchor (get_btree (buffer), iter, anchor); } /** * gtk_text_buffer_place_cursor: * @buffer: a #GtkTextBuffer * @where: where to put the cursor * * This function moves the “insert” and “selection_bound” marks * simultaneously. If you move them to the same place in two steps * with gtk_text_buffer_move_mark(), you will temporarily select a * region in between their old and new locations, which can be pretty * inefficient since the temporarily-selected region will force stuff * to be recalculated. This function moves them as a unit, which can * be optimized. **/ void gtk_text_buffer_place_cursor (GtkTextBuffer *buffer, const GtkTextIter *where) { gtk_text_buffer_select_range (buffer, where, where); } /** * gtk_text_buffer_select_range: * @buffer: a #GtkTextBuffer * @ins: where to put the “insert” mark * @bound: where to put the “selection_bound” mark * * This function moves the “insert” and “selection_bound” marks * simultaneously. If you move them in two steps * with gtk_text_buffer_move_mark(), you will temporarily select a * region in between their old and new locations, which can be pretty * inefficient since the temporarily-selected region will force stuff * to be recalculated. This function moves them as a unit, which can * be optimized. * * Since: 2.4 **/ void gtk_text_buffer_select_range (GtkTextBuffer *buffer, const GtkTextIter *ins, const GtkTextIter *bound) { GtkTextIter real_ins; GtkTextIter real_bound; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); real_ins = *ins; real_bound = *bound; _gtk_text_btree_select_range (get_btree (buffer), &real_ins, &real_bound); gtk_text_buffer_mark_set (buffer, &real_ins, gtk_text_buffer_get_insert (buffer)); gtk_text_buffer_mark_set (buffer, &real_bound, gtk_text_buffer_get_selection_bound (buffer)); } /* * Tags */ /** * gtk_text_buffer_create_tag: * @buffer: a #GtkTextBuffer * @tag_name: (allow-none): name of the new tag, or %NULL * @first_property_name: (allow-none): name of first property to set, or %NULL * @...: %NULL-terminated list of property names and values * * Creates a tag and adds it to the tag table for @buffer. * Equivalent to calling gtk_text_tag_new() and then adding the * tag to the buffer’s tag table. The returned tag is owned by * the buffer’s tag table, so the ref count will be equal to one. * * If @tag_name is %NULL, the tag is anonymous. * * If @tag_name is non-%NULL, a tag called @tag_name must not already * exist in the tag table for this buffer. * * The @first_property_name argument and subsequent arguments are a list * of properties to set on the tag, as with g_object_set(). * * Returns: (transfer none): a new tag */ GtkTextTag* gtk_text_buffer_create_tag (GtkTextBuffer *buffer, const gchar *tag_name, const gchar *first_property_name, ...) { GtkTextTag *tag; va_list list; g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); tag = gtk_text_tag_new (tag_name); if (!gtk_text_tag_table_add (get_table (buffer), tag)) { g_object_unref (tag); return NULL; } if (first_property_name) { va_start (list, first_property_name); g_object_set_valist (G_OBJECT (tag), first_property_name, list); va_end (list); } g_object_unref (tag); return tag; } static void gtk_text_buffer_real_apply_tag (GtkTextBuffer *buffer, GtkTextTag *tag, const GtkTextIter *start, const GtkTextIter *end) { if (tag->priv->table != buffer->priv->tag_table) { g_warning ("Can only apply tags that are in the tag table for the buffer"); return; } _gtk_text_btree_tag (start, end, tag, TRUE); } static void gtk_text_buffer_real_remove_tag (GtkTextBuffer *buffer, GtkTextTag *tag, const GtkTextIter *start, const GtkTextIter *end) { if (tag->priv->table != buffer->priv->tag_table) { g_warning ("Can only remove tags that are in the tag table for the buffer"); return; } _gtk_text_btree_tag (start, end, tag, FALSE); } static void gtk_text_buffer_real_changed (GtkTextBuffer *buffer) { gtk_text_buffer_set_modified (buffer, TRUE); g_object_notify (G_OBJECT (buffer), "text"); } static void gtk_text_buffer_real_mark_set (GtkTextBuffer *buffer, const GtkTextIter *iter, GtkTextMark *mark) { GtkTextMark *insert; insert = gtk_text_buffer_get_insert (buffer); if (mark == insert || mark == gtk_text_buffer_get_selection_bound (buffer)) { gboolean has_selection; update_selection_clipboards (buffer); has_selection = gtk_text_buffer_get_selection_bounds (buffer, NULL, NULL); if (has_selection != buffer->priv->has_selection) { buffer->priv->has_selection = has_selection; g_object_notify (G_OBJECT (buffer), "has-selection"); } } if (mark == insert) g_object_notify (G_OBJECT (buffer), "cursor-position"); } static void gtk_text_buffer_emit_tag (GtkTextBuffer *buffer, GtkTextTag *tag, gboolean apply, const GtkTextIter *start, const GtkTextIter *end) { GtkTextIter start_tmp = *start; GtkTextIter end_tmp = *end; g_return_if_fail (tag != NULL); gtk_text_iter_order (&start_tmp, &end_tmp); if (apply) g_signal_emit (buffer, signals[APPLY_TAG], 0, tag, &start_tmp, &end_tmp); else g_signal_emit (buffer, signals[REMOVE_TAG], 0, tag, &start_tmp, &end_tmp); } /** * gtk_text_buffer_apply_tag: * @buffer: a #GtkTextBuffer * @tag: a #GtkTextTag * @start: one bound of range to be tagged * @end: other bound of range to be tagged * * Emits the “apply-tag” signal on @buffer. The default * handler for the signal applies @tag to the given range. * @start and @end do not have to be in order. **/ void gtk_text_buffer_apply_tag (GtkTextBuffer *buffer, GtkTextTag *tag, const GtkTextIter *start, const GtkTextIter *end) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (GTK_IS_TEXT_TAG (tag)); g_return_if_fail (start != NULL); g_return_if_fail (end != NULL); g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); g_return_if_fail (tag->priv->table == buffer->priv->tag_table); gtk_text_buffer_emit_tag (buffer, tag, TRUE, start, end); } /** * gtk_text_buffer_remove_tag: * @buffer: a #GtkTextBuffer * @tag: a #GtkTextTag * @start: one bound of range to be untagged * @end: other bound of range to be untagged * * Emits the “remove-tag” signal. The default handler for the signal * removes all occurrences of @tag from the given range. @start and * @end don’t have to be in order. **/ void gtk_text_buffer_remove_tag (GtkTextBuffer *buffer, GtkTextTag *tag, const GtkTextIter *start, const GtkTextIter *end) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (GTK_IS_TEXT_TAG (tag)); g_return_if_fail (start != NULL); g_return_if_fail (end != NULL); g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); g_return_if_fail (tag->priv->table == buffer->priv->tag_table); gtk_text_buffer_emit_tag (buffer, tag, FALSE, start, end); } /** * gtk_text_buffer_apply_tag_by_name: * @buffer: a #GtkTextBuffer * @name: name of a named #GtkTextTag * @start: one bound of range to be tagged * @end: other bound of range to be tagged * * Calls gtk_text_tag_table_lookup() on the buffer’s tag table to * get a #GtkTextTag, then calls gtk_text_buffer_apply_tag(). **/ void gtk_text_buffer_apply_tag_by_name (GtkTextBuffer *buffer, const gchar *name, const GtkTextIter *start, const GtkTextIter *end) { GtkTextTag *tag; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (name != NULL); g_return_if_fail (start != NULL); g_return_if_fail (end != NULL); g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); tag = gtk_text_tag_table_lookup (get_table (buffer), name); if (tag == NULL) { g_warning ("Unknown tag `%s'", name); return; } gtk_text_buffer_emit_tag (buffer, tag, TRUE, start, end); } /** * gtk_text_buffer_remove_tag_by_name: * @buffer: a #GtkTextBuffer * @name: name of a #GtkTextTag * @start: one bound of range to be untagged * @end: other bound of range to be untagged * * Calls gtk_text_tag_table_lookup() on the buffer’s tag table to * get a #GtkTextTag, then calls gtk_text_buffer_remove_tag(). **/ void gtk_text_buffer_remove_tag_by_name (GtkTextBuffer *buffer, const gchar *name, const GtkTextIter *start, const GtkTextIter *end) { GtkTextTag *tag; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (name != NULL); g_return_if_fail (start != NULL); g_return_if_fail (end != NULL); g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); tag = gtk_text_tag_table_lookup (get_table (buffer), name); if (tag == NULL) { g_warning ("Unknown tag `%s'", name); return; } gtk_text_buffer_emit_tag (buffer, tag, FALSE, start, end); } static gint pointer_cmp (gconstpointer a, gconstpointer b) { if (a < b) return -1; else if (a > b) return 1; else return 0; } /** * gtk_text_buffer_remove_all_tags: * @buffer: a #GtkTextBuffer * @start: one bound of range to be untagged * @end: other bound of range to be untagged * * Removes all tags in the range between @start and @end. Be careful * with this function; it could remove tags added in code unrelated to * the code you’re currently writing. That is, using this function is * probably a bad idea if you have two or more unrelated code sections * that add tags. **/ void gtk_text_buffer_remove_all_tags (GtkTextBuffer *buffer, const GtkTextIter *start, const GtkTextIter *end) { GtkTextIter first, second, tmp; GSList *tags; GSList *tmp_list; GSList *prev, *next; GtkTextTag *tag; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (start != NULL); g_return_if_fail (end != NULL); g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); first = *start; second = *end; gtk_text_iter_order (&first, &second); /* Get all tags turned on at the start */ tags = gtk_text_iter_get_tags (&first); /* Find any that are toggled on within the range */ tmp = first; while (gtk_text_iter_forward_to_tag_toggle (&tmp, NULL)) { GSList *toggled; GSList *tmp_list2; if (gtk_text_iter_compare (&tmp, &second) >= 0) break; /* past the end of the range */ toggled = gtk_text_iter_get_toggled_tags (&tmp, TRUE); /* We could end up with a really big-ass list here. * Fix it someday. */ tmp_list2 = toggled; while (tmp_list2 != NULL) { tags = g_slist_prepend (tags, tmp_list2->data); tmp_list2 = g_slist_next (tmp_list2); } g_slist_free (toggled); } /* Sort the list */ tags = g_slist_sort (tags, pointer_cmp); /* Strip duplicates */ tag = NULL; prev = NULL; tmp_list = tags; while (tmp_list != NULL) { if (tag == tmp_list->data) { /* duplicate */ next = tmp_list->next; if (prev) prev->next = next; tmp_list->next = NULL; g_slist_free (tmp_list); tmp_list = next; /* prev is unchanged */ } else { /* not a duplicate */ tag = GTK_TEXT_TAG (tmp_list->data); prev = tmp_list; tmp_list = tmp_list->next; } } g_slist_foreach (tags, (GFunc) g_object_ref, NULL); tmp_list = tags; while (tmp_list != NULL) { tag = GTK_TEXT_TAG (tmp_list->data); gtk_text_buffer_remove_tag (buffer, tag, &first, &second); tmp_list = tmp_list->next; } g_slist_foreach (tags, (GFunc) g_object_unref, NULL); g_slist_free (tags); } /* * Obtain various iterators */ /** * gtk_text_buffer_get_iter_at_line_offset: * @buffer: a #GtkTextBuffer * @iter: (out): iterator to initialize * @line_number: line number counting from 0 * @char_offset: char offset from start of line * * Obtains an iterator pointing to @char_offset within the given * line. The @char_offset must exist, offsets off the end of the line * are not allowed. Note characters, not bytes; * UTF-8 may encode one character as multiple bytes. **/ void gtk_text_buffer_get_iter_at_line_offset (GtkTextBuffer *buffer, GtkTextIter *iter, gint line_number, gint char_offset) { g_return_if_fail (iter != NULL); g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); _gtk_text_btree_get_iter_at_line_char (get_btree (buffer), iter, line_number, char_offset); } /** * gtk_text_buffer_get_iter_at_line_index: * @buffer: a #GtkTextBuffer * @iter: (out): iterator to initialize * @line_number: line number counting from 0 * @byte_index: byte index from start of line * * Obtains an iterator pointing to @byte_index within the given line. * @byte_index must be the start of a UTF-8 character, and must not be * beyond the end of the line. Note bytes, not * characters; UTF-8 may encode one character as multiple bytes. **/ void gtk_text_buffer_get_iter_at_line_index (GtkTextBuffer *buffer, GtkTextIter *iter, gint line_number, gint byte_index) { g_return_if_fail (iter != NULL); g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); _gtk_text_btree_get_iter_at_line_byte (get_btree (buffer), iter, line_number, byte_index); } /** * gtk_text_buffer_get_iter_at_line: * @buffer: a #GtkTextBuffer * @iter: (out): iterator to initialize * @line_number: line number counting from 0 * * Initializes @iter to the start of the given line. If @line_number is greater * than the number of lines in the @buffer, the end iterator is returned. **/ void gtk_text_buffer_get_iter_at_line (GtkTextBuffer *buffer, GtkTextIter *iter, gint line_number) { g_return_if_fail (iter != NULL); g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); gtk_text_buffer_get_iter_at_line_offset (buffer, iter, line_number, 0); } /** * gtk_text_buffer_get_iter_at_offset: * @buffer: a #GtkTextBuffer * @iter: (out): iterator to initialize * @char_offset: char offset from start of buffer, counting from 0, or -1 * * Initializes @iter to a position @char_offset chars from the start * of the entire buffer. If @char_offset is -1 or greater than the number * of characters in the buffer, @iter is initialized to the end iterator, * the iterator one past the last valid character in the buffer. **/ void gtk_text_buffer_get_iter_at_offset (GtkTextBuffer *buffer, GtkTextIter *iter, gint char_offset) { g_return_if_fail (iter != NULL); g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); _gtk_text_btree_get_iter_at_char (get_btree (buffer), iter, char_offset); } /** * gtk_text_buffer_get_start_iter: * @buffer: a #GtkTextBuffer * @iter: (out): iterator to initialize * * Initialized @iter with the first position in the text buffer. This * is the same as using gtk_text_buffer_get_iter_at_offset() to get * the iter at character offset 0. **/ void gtk_text_buffer_get_start_iter (GtkTextBuffer *buffer, GtkTextIter *iter) { g_return_if_fail (iter != NULL); g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); _gtk_text_btree_get_iter_at_char (get_btree (buffer), iter, 0); } /** * gtk_text_buffer_get_end_iter: * @buffer: a #GtkTextBuffer * @iter: (out): iterator to initialize * * Initializes @iter with the “end iterator,” one past the last valid * character in the text buffer. If dereferenced with * gtk_text_iter_get_char(), the end iterator has a character value of 0. * The entire buffer lies in the range from the first position in * the buffer (call gtk_text_buffer_get_start_iter() to get * character position 0) to the end iterator. **/ void gtk_text_buffer_get_end_iter (GtkTextBuffer *buffer, GtkTextIter *iter) { g_return_if_fail (iter != NULL); g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); _gtk_text_btree_get_end_iter (get_btree (buffer), iter); } /** * gtk_text_buffer_get_bounds: * @buffer: a #GtkTextBuffer * @start: (out): iterator to initialize with first position in the buffer * @end: (out): iterator to initialize with the end iterator * * Retrieves the first and last iterators in the buffer, i.e. the * entire buffer lies within the range [@start,@end). **/ void gtk_text_buffer_get_bounds (GtkTextBuffer *buffer, GtkTextIter *start, GtkTextIter *end) { g_return_if_fail (start != NULL); g_return_if_fail (end != NULL); g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); _gtk_text_btree_get_iter_at_char (get_btree (buffer), start, 0); _gtk_text_btree_get_end_iter (get_btree (buffer), end); } /* * Modified flag */ /** * gtk_text_buffer_get_modified: * @buffer: a #GtkTextBuffer * * Indicates whether the buffer has been modified since the last call * to gtk_text_buffer_set_modified() set the modification flag to * %FALSE. Used for example to enable a “save” function in a text * editor. * * Returns: %TRUE if the buffer has been modified **/ gboolean gtk_text_buffer_get_modified (GtkTextBuffer *buffer) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); return buffer->priv->modified; } /** * gtk_text_buffer_set_modified: * @buffer: a #GtkTextBuffer * @setting: modification flag setting * * Used to keep track of whether the buffer has been modified since the * last time it was saved. Whenever the buffer is saved to disk, call * gtk_text_buffer_set_modified (@buffer, FALSE). When the buffer is modified, * it will automatically toggled on the modified bit again. When the modified * bit flips, the buffer emits the #GtkTextBuffer::modified-changed signal. **/ void gtk_text_buffer_set_modified (GtkTextBuffer *buffer, gboolean setting) { gboolean fixed_setting; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); fixed_setting = setting != FALSE; if (buffer->priv->modified == fixed_setting) return; else { buffer->priv->modified = fixed_setting; g_signal_emit (buffer, signals[MODIFIED_CHANGED], 0); } } /** * gtk_text_buffer_get_has_selection: * @buffer: a #GtkTextBuffer * * Indicates whether the buffer has some text currently selected. * * Returns: %TRUE if the there is text selected * * Since: 2.10 **/ gboolean gtk_text_buffer_get_has_selection (GtkTextBuffer *buffer) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); return buffer->priv->has_selection; } /* * Assorted other stuff */ /** * gtk_text_buffer_get_line_count: * @buffer: a #GtkTextBuffer * * Obtains the number of lines in the buffer. This value is cached, so * the function is very fast. * * Returns: number of lines in the buffer **/ gint gtk_text_buffer_get_line_count (GtkTextBuffer *buffer) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), 0); return _gtk_text_btree_line_count (get_btree (buffer)); } /** * gtk_text_buffer_get_char_count: * @buffer: a #GtkTextBuffer * * Gets the number of characters in the buffer; note that characters * and bytes are not the same, you can’t e.g. expect the contents of * the buffer in string form to be this many bytes long. The character * count is cached, so this function is very fast. * * Returns: number of characters in the buffer **/ gint gtk_text_buffer_get_char_count (GtkTextBuffer *buffer) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), 0); return _gtk_text_btree_char_count (get_btree (buffer)); } /* Called when we lose the primary selection. */ static void clipboard_clear_selection_cb (GtkClipboard *clipboard, gpointer data) { /* Move selection_bound to the insertion point */ GtkTextIter insert; GtkTextIter selection_bound; GtkTextBuffer *buffer = GTK_TEXT_BUFFER (data); gtk_text_buffer_get_iter_at_mark (buffer, &insert, gtk_text_buffer_get_insert (buffer)); gtk_text_buffer_get_iter_at_mark (buffer, &selection_bound, gtk_text_buffer_get_selection_bound (buffer)); if (!gtk_text_iter_equal (&insert, &selection_bound)) gtk_text_buffer_move_mark (buffer, gtk_text_buffer_get_selection_bound (buffer), &insert); } /* Called when we have the primary selection and someone else wants our * data in order to paste it. */ static void clipboard_get_selection_cb (GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info, gpointer data) { GtkTextBuffer *buffer = GTK_TEXT_BUFFER (data); GtkTextIter start, end; if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end)) { if (info == GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS) { /* Provide the address of the buffer; this will only be * used within-process */ gtk_selection_data_set (selection_data, gtk_selection_data_get_target (selection_data), 8, /* bytes */ (void*)&buffer, sizeof (buffer)); } else if (info == GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT) { guint8 *str; gsize len; str = gtk_text_buffer_serialize (buffer, buffer, gtk_selection_data_get_target (selection_data), &start, &end, &len); gtk_selection_data_set (selection_data, gtk_selection_data_get_target (selection_data), 8, /* bytes */ str, len); g_free (str); } else { gchar *str; str = gtk_text_iter_get_visible_text (&start, &end); gtk_selection_data_set_text (selection_data, str, -1); g_free (str); } } } static GtkTextBuffer * create_clipboard_contents_buffer (GtkTextBuffer *buffer) { GtkTextBuffer *contents; contents = gtk_text_buffer_new (gtk_text_buffer_get_tag_table (buffer)); g_object_set_data (G_OBJECT (contents), I_("gtk-text-buffer-clipboard-source"), buffer); g_object_set_data (G_OBJECT (contents), I_("gtk-text-buffer-clipboard"), GINT_TO_POINTER (1)); /* Ref the source buffer as long as the clipboard contents buffer * exists, because it's needed for serializing the contents buffer. * See http://bugzilla.gnome.org/show_bug.cgi?id=339195 */ g_object_ref (buffer); g_object_weak_ref (G_OBJECT (contents), (GWeakNotify) g_object_unref, buffer); return contents; } /* Provide cut/copied data */ static void clipboard_get_contents_cb (GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info, gpointer data) { GtkTextBuffer *contents = GTK_TEXT_BUFFER (data); g_assert (contents); /* This should never be called unless we own the clipboard */ if (info == GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS) { /* Provide the address of the clipboard buffer; this will only * be used within-process. OK to supply a NULL value for contents. */ gtk_selection_data_set (selection_data, gtk_selection_data_get_target (selection_data), 8, /* bytes */ (void*)&contents, sizeof (contents)); } else if (info == GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT) { GtkTextBuffer *clipboard_source_buffer; GtkTextIter start, end; guint8 *str; gsize len; clipboard_source_buffer = g_object_get_data (G_OBJECT (contents), "gtk-text-buffer-clipboard-source"); gtk_text_buffer_get_bounds (contents, &start, &end); str = gtk_text_buffer_serialize (clipboard_source_buffer, contents, gtk_selection_data_get_target (selection_data), &start, &end, &len); gtk_selection_data_set (selection_data, gtk_selection_data_get_target (selection_data), 8, /* bytes */ str, len); g_free (str); } else { gchar *str; GtkTextIter start, end; gtk_text_buffer_get_bounds (contents, &start, &end); str = gtk_text_iter_get_visible_text (&start, &end); gtk_selection_data_set_text (selection_data, str, -1); g_free (str); } } static void clipboard_clear_contents_cb (GtkClipboard *clipboard, gpointer data) { GtkTextBuffer *contents = GTK_TEXT_BUFFER (data); g_object_unref (contents); } static void get_paste_point (GtkTextBuffer *buffer, GtkTextIter *iter, gboolean clear_afterward) { GtkTextIter insert_point; GtkTextMark *paste_point_override; paste_point_override = gtk_text_buffer_get_mark (buffer, "gtk_paste_point_override"); if (paste_point_override != NULL) { gtk_text_buffer_get_iter_at_mark (buffer, &insert_point, paste_point_override); if (clear_afterward) gtk_text_buffer_delete_mark (buffer, paste_point_override); } else { gtk_text_buffer_get_iter_at_mark (buffer, &insert_point, gtk_text_buffer_get_insert (buffer)); } *iter = insert_point; } static void pre_paste_prep (ClipboardRequest *request_data, GtkTextIter *insert_point) { GtkTextBuffer *buffer = request_data->buffer; get_paste_point (buffer, insert_point, TRUE); if (request_data->replace_selection) { GtkTextIter start, end; if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end)) { if (request_data->interactive) gtk_text_buffer_delete_interactive (request_data->buffer, &start, &end, request_data->default_editable); else gtk_text_buffer_delete (request_data->buffer, &start, &end); *insert_point = start; } } } static void emit_paste_done (GtkTextBuffer *buffer, GtkClipboard *clipboard) { g_signal_emit (buffer, signals[PASTE_DONE], 0, clipboard); } static void free_clipboard_request (ClipboardRequest *request_data) { g_object_unref (request_data->buffer); g_slice_free (ClipboardRequest, request_data); } /* Called when we request a paste and receive the text data */ static void clipboard_text_received (GtkClipboard *clipboard, const gchar *str, gpointer data) { ClipboardRequest *request_data = data; GtkTextBuffer *buffer = request_data->buffer; if (str) { GtkTextIter insert_point; if (request_data->interactive) gtk_text_buffer_begin_user_action (buffer); pre_paste_prep (request_data, &insert_point); if (request_data->interactive) gtk_text_buffer_insert_interactive (buffer, &insert_point, str, -1, request_data->default_editable); else gtk_text_buffer_insert (buffer, &insert_point, str, -1); if (request_data->interactive) gtk_text_buffer_end_user_action (buffer); emit_paste_done (buffer, clipboard); } else { /* It may happen that we set a point override but we are not inserting any text, so we must remove it afterwards */ GtkTextMark *paste_point_override; paste_point_override = gtk_text_buffer_get_mark (buffer, "gtk_paste_point_override"); if (paste_point_override != NULL) gtk_text_buffer_delete_mark (buffer, paste_point_override); } free_clipboard_request (request_data); } static GtkTextBuffer* selection_data_get_buffer (GtkSelectionData *selection_data, ClipboardRequest *request_data) { GdkWindow *owner; GtkTextBuffer *src_buffer = NULL; /* If we can get the owner, the selection is in-process */ owner = gdk_selection_owner_get_for_display (gtk_selection_data_get_display (selection_data), gtk_selection_data_get_selection (selection_data)); if (owner == NULL) return NULL; if (gdk_window_get_window_type (owner) == GDK_WINDOW_FOREIGN) return NULL; if (gtk_selection_data_get_data_type (selection_data) != gdk_atom_intern_static_string ("GTK_TEXT_BUFFER_CONTENTS")) return NULL; if (gtk_selection_data_get_length (selection_data) != sizeof (src_buffer)) return NULL; memcpy (&src_buffer, gtk_selection_data_get_data (selection_data), sizeof (src_buffer)); if (src_buffer == NULL) return NULL; g_return_val_if_fail (GTK_IS_TEXT_BUFFER (src_buffer), NULL); if (gtk_text_buffer_get_tag_table (src_buffer) != gtk_text_buffer_get_tag_table (request_data->buffer)) return NULL; return src_buffer; } #if 0 /* These are pretty handy functions; maybe something like them * should be in the public API. Also, there are other places in this * file where they could be used. */ static gpointer save_iter (const GtkTextIter *iter, gboolean left_gravity) { return gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (iter), NULL, iter, TRUE); } static void restore_iter (const GtkTextIter *iter, gpointer save_id) { gtk_text_buffer_get_iter_at_mark (gtk_text_mark_get_buffer (save_id), (GtkTextIter*) iter, save_id); gtk_text_buffer_delete_mark (gtk_text_mark_get_buffer (save_id), save_id); } #endif static void clipboard_rich_text_received (GtkClipboard *clipboard, GdkAtom format, const guint8 *text, gsize length, gpointer data) { ClipboardRequest *request_data = data; GtkTextIter insert_point; gboolean retval = TRUE; GError *error = NULL; if (text != NULL && length > 0) { if (request_data->interactive) gtk_text_buffer_begin_user_action (request_data->buffer); pre_paste_prep (request_data, &insert_point); if (!request_data->interactive || gtk_text_iter_can_insert (&insert_point, request_data->default_editable)) { retval = gtk_text_buffer_deserialize (request_data->buffer, request_data->buffer, format, &insert_point, text, length, &error); } if (!retval) { g_warning ("error pasting: %s\n", error->message); g_clear_error (&error); } if (request_data->interactive) gtk_text_buffer_end_user_action (request_data->buffer); emit_paste_done (request_data->buffer, clipboard); if (retval) return; } /* Request the text selection instead */ gtk_clipboard_request_text (clipboard, clipboard_text_received, data); } static void paste_from_buffer (GtkClipboard *clipboard, ClipboardRequest *request_data, GtkTextBuffer *src_buffer, const GtkTextIter *start, const GtkTextIter *end) { GtkTextIter insert_point; GtkTextBuffer *buffer = request_data->buffer; /* We're about to emit a bunch of signals, so be safe */ g_object_ref (src_buffer); /* Replacing the selection with itself */ if (request_data->replace_selection && buffer == src_buffer) { /* Clear the paste point if needed */ get_paste_point (buffer, &insert_point, TRUE); goto done; } if (request_data->interactive) gtk_text_buffer_begin_user_action (buffer); pre_paste_prep (request_data, &insert_point); if (!gtk_text_iter_equal (start, end)) { if (!request_data->interactive || (gtk_text_iter_can_insert (&insert_point, request_data->default_editable))) gtk_text_buffer_real_insert_range (buffer, &insert_point, start, end, request_data->interactive); } if (request_data->interactive) gtk_text_buffer_end_user_action (buffer); done: emit_paste_done (buffer, clipboard); g_object_unref (src_buffer); free_clipboard_request (request_data); } static void clipboard_clipboard_buffer_received (GtkClipboard *clipboard, GtkSelectionData *selection_data, gpointer data) { ClipboardRequest *request_data = data; GtkTextBuffer *src_buffer; src_buffer = selection_data_get_buffer (selection_data, request_data); if (src_buffer) { GtkTextIter start, end; if (g_object_get_data (G_OBJECT (src_buffer), "gtk-text-buffer-clipboard")) { gtk_text_buffer_get_bounds (src_buffer, &start, &end); paste_from_buffer (clipboard, request_data, src_buffer, &start, &end); } else { if (gtk_text_buffer_get_selection_bounds (src_buffer, &start, &end)) paste_from_buffer (clipboard, request_data, src_buffer, &start, &end); } } else { if (gtk_clipboard_wait_is_rich_text_available (clipboard, request_data->buffer)) { /* Request rich text */ gtk_clipboard_request_rich_text (clipboard, request_data->buffer, clipboard_rich_text_received, data); } else { /* Request the text selection instead */ gtk_clipboard_request_text (clipboard, clipboard_text_received, data); } } } typedef struct { GtkClipboard *clipboard; guint ref_count; } SelectionClipboard; static void update_selection_clipboards (GtkTextBuffer *buffer) { GtkTextBufferPrivate *priv; GSList *tmp_list = buffer->priv->selection_clipboards; priv = buffer->priv; gtk_text_buffer_get_copy_target_list (buffer); while (tmp_list) { GtkTextIter start; GtkTextIter end; SelectionClipboard *selection_clipboard = tmp_list->data; GtkClipboard *clipboard = selection_clipboard->clipboard; /* Determine whether we have a selection and adjust X selection * accordingly. */ if (!gtk_text_buffer_get_selection_bounds (buffer, &start, &end)) { if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (buffer)) gtk_clipboard_clear (clipboard); } else { /* Even if we already have the selection, we need to update our * timestamp. */ gtk_clipboard_set_with_owner (clipboard, priv->copy_target_entries, priv->n_copy_target_entries, clipboard_get_selection_cb, clipboard_clear_selection_cb, G_OBJECT (buffer)); } tmp_list = tmp_list->next; } } static SelectionClipboard * find_selection_clipboard (GtkTextBuffer *buffer, GtkClipboard *clipboard) { GSList *tmp_list = buffer->priv->selection_clipboards; while (tmp_list) { SelectionClipboard *selection_clipboard = tmp_list->data; if (selection_clipboard->clipboard == clipboard) return selection_clipboard; tmp_list = tmp_list->next; } return NULL; } /** * gtk_text_buffer_add_selection_clipboard: * @buffer: a #GtkTextBuffer * @clipboard: a #GtkClipboard * * Adds @clipboard to the list of clipboards in which the selection * contents of @buffer are available. In most cases, @clipboard will be * the #GtkClipboard of type %GDK_SELECTION_PRIMARY for a view of @buffer. **/ void gtk_text_buffer_add_selection_clipboard (GtkTextBuffer *buffer, GtkClipboard *clipboard) { SelectionClipboard *selection_clipboard; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (clipboard != NULL); selection_clipboard = find_selection_clipboard (buffer, clipboard); if (selection_clipboard) { selection_clipboard->ref_count++; } else { selection_clipboard = g_slice_new (SelectionClipboard); selection_clipboard->clipboard = clipboard; selection_clipboard->ref_count = 1; buffer->priv->selection_clipboards = g_slist_prepend (buffer->priv->selection_clipboards, selection_clipboard); } } /** * gtk_text_buffer_remove_selection_clipboard: * @buffer: a #GtkTextBuffer * @clipboard: a #GtkClipboard added to @buffer by * gtk_text_buffer_add_selection_clipboard() * * Removes a #GtkClipboard added with * gtk_text_buffer_add_selection_clipboard(). **/ void gtk_text_buffer_remove_selection_clipboard (GtkTextBuffer *buffer, GtkClipboard *clipboard) { SelectionClipboard *selection_clipboard; g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (clipboard != NULL); selection_clipboard = find_selection_clipboard (buffer, clipboard); g_return_if_fail (selection_clipboard != NULL); selection_clipboard->ref_count--; if (selection_clipboard->ref_count == 0) { if (gtk_clipboard_get_owner (selection_clipboard->clipboard) == G_OBJECT (buffer)) gtk_clipboard_clear (selection_clipboard->clipboard); buffer->priv->selection_clipboards = g_slist_remove (buffer->priv->selection_clipboards, selection_clipboard); g_slice_free (SelectionClipboard, selection_clipboard); } } static void remove_all_selection_clipboards (GtkTextBuffer *buffer) { GtkTextBufferPrivate *priv = buffer->priv; GSList *l; for (l = priv->selection_clipboards; l != NULL; l = l->next) { SelectionClipboard *selection_clipboard = l->data; g_slice_free (SelectionClipboard, selection_clipboard); } g_slist_free (priv->selection_clipboards); priv->selection_clipboards = NULL; } /** * gtk_text_buffer_paste_clipboard: * @buffer: a #GtkTextBuffer * @clipboard: the #GtkClipboard to paste from * @override_location: (allow-none): location to insert pasted text, or %NULL * @default_editable: whether the buffer is editable by default * * Pastes the contents of a clipboard. If @override_location is %NULL, the * pasted text will be inserted at the cursor position, or the buffer selection * will be replaced if the selection is non-empty. * * Note: pasting is asynchronous, that is, we’ll ask for the paste data and * return, and at some point later after the main loop runs, the paste data will * be inserted. **/ void gtk_text_buffer_paste_clipboard (GtkTextBuffer *buffer, GtkClipboard *clipboard, GtkTextIter *override_location, gboolean default_editable) { ClipboardRequest *data = g_slice_new (ClipboardRequest); GtkTextIter paste_point; GtkTextIter start, end; if (override_location != NULL) gtk_text_buffer_create_mark (buffer, "gtk_paste_point_override", override_location, FALSE); data->buffer = g_object_ref (buffer); data->interactive = TRUE; data->default_editable = !!default_editable; /* When pasting with the cursor inside the selection area, you * replace the selection with the new text, otherwise, you * simply insert the new text at the point where the click * occured, unselecting any selected text. The replace_selection * flag toggles this behavior. */ data->replace_selection = FALSE; get_paste_point (buffer, &paste_point, FALSE); if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end) && (gtk_text_iter_in_range (&paste_point, &start, &end) || gtk_text_iter_equal (&paste_point, &end))) data->replace_selection = TRUE; gtk_clipboard_request_contents (clipboard, gdk_atom_intern_static_string ("GTK_TEXT_BUFFER_CONTENTS"), clipboard_clipboard_buffer_received, data); } /** * gtk_text_buffer_delete_selection: * @buffer: a #GtkTextBuffer * @interactive: whether the deletion is caused by user interaction * @default_editable: whether the buffer is editable by default * * Deletes the range between the “insert” and “selection_bound” marks, * that is, the currently-selected text. If @interactive is %TRUE, * the editability of the selection will be considered (users can’t delete * uneditable text). * * Returns: whether there was a non-empty selection to delete **/ gboolean gtk_text_buffer_delete_selection (GtkTextBuffer *buffer, gboolean interactive, gboolean default_editable) { GtkTextIter start; GtkTextIter end; if (!gtk_text_buffer_get_selection_bounds (buffer, &start, &end)) { return FALSE; /* No selection */ } else { if (interactive) gtk_text_buffer_delete_interactive (buffer, &start, &end, default_editable); else gtk_text_buffer_delete (buffer, &start, &end); return TRUE; /* We deleted stuff */ } } /** * gtk_text_buffer_backspace: * @buffer: a #GtkTextBuffer * @iter: a position in @buffer * @interactive: whether the deletion is caused by user interaction * @default_editable: whether the buffer is editable by default * * Performs the appropriate action as if the user hit the delete * key with the cursor at the position specified by @iter. In the * normal case a single character will be deleted, but when * combining accents are involved, more than one character can * be deleted, and when precomposed character and accent combinations * are involved, less than one character will be deleted. * * Because the buffer is modified, all outstanding iterators become * invalid after calling this function; however, the @iter will be * re-initialized to point to the location where text was deleted. * * Returns: %TRUE if the buffer was modified * * Since: 2.6 **/ gboolean gtk_text_buffer_backspace (GtkTextBuffer *buffer, GtkTextIter *iter, gboolean interactive, gboolean default_editable) { gchar *cluster_text; GtkTextIter start; GtkTextIter end; gboolean retval = FALSE; const PangoLogAttr *attrs; int offset; gboolean backspace_deletes_character; g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); g_return_val_if_fail (iter != NULL, FALSE); start = *iter; end = *iter; attrs = _gtk_text_buffer_get_line_log_attrs (buffer, &start, NULL); /* For no good reason, attrs is NULL for the empty last line in * a buffer. Special case that here. (#156164) */ if (attrs) { offset = gtk_text_iter_get_line_offset (&start); backspace_deletes_character = attrs[offset].backspace_deletes_character; } else backspace_deletes_character = FALSE; gtk_text_iter_backward_cursor_position (&start); if (gtk_text_iter_equal (&start, &end)) return FALSE; cluster_text = gtk_text_iter_get_text (&start, &end); if (interactive) gtk_text_buffer_begin_user_action (buffer); if (gtk_text_buffer_delete_interactive (buffer, &start, &end, default_editable)) { /* special case \r\n, since we never want to reinsert \r */ if (backspace_deletes_character && strcmp ("\r\n", cluster_text)) { gchar *normalized_text = g_utf8_normalize (cluster_text, strlen (cluster_text), G_NORMALIZE_NFD); glong len = g_utf8_strlen (normalized_text, -1); if (len > 1) gtk_text_buffer_insert_interactive (buffer, &start, normalized_text, g_utf8_offset_to_pointer (normalized_text, len - 1) - normalized_text, default_editable); g_free (normalized_text); } retval = TRUE; } if (interactive) gtk_text_buffer_end_user_action (buffer); g_free (cluster_text); /* Revalidate the users iter */ *iter = start; return retval; } static void cut_or_copy (GtkTextBuffer *buffer, GtkClipboard *clipboard, gboolean delete_region_after, gboolean interactive, gboolean default_editable) { GtkTextBufferPrivate *priv; /* We prefer to cut the selected region between selection_bound and * insertion point. If that region is empty, then we cut the region * between the "anchor" and the insertion point (this is for * C-space and M-w and other Emacs-style copy/yank keys). Note that * insert and selection_bound are guaranteed to exist, but the * anchor only exists sometimes. */ GtkTextIter start; GtkTextIter end; priv = buffer->priv; gtk_text_buffer_get_copy_target_list (buffer); if (!gtk_text_buffer_get_selection_bounds (buffer, &start, &end)) { /* Let's try the anchor thing */ GtkTextMark * anchor = gtk_text_buffer_get_mark (buffer, "anchor"); if (anchor == NULL) return; else { gtk_text_buffer_get_iter_at_mark (buffer, &end, anchor); gtk_text_iter_order (&start, &end); } } if (!gtk_text_iter_equal (&start, &end)) { GtkTextIter ins; GtkTextBuffer *contents; contents = create_clipboard_contents_buffer (buffer); gtk_text_buffer_get_iter_at_offset (contents, &ins, 0); gtk_text_buffer_insert_range (contents, &ins, &start, &end); if (!gtk_clipboard_set_with_data (clipboard, priv->copy_target_entries, priv->n_copy_target_entries, clipboard_get_contents_cb, clipboard_clear_contents_cb, contents)) g_object_unref (contents); else gtk_clipboard_set_can_store (clipboard, priv->copy_target_entries + 1, priv->n_copy_target_entries - 1); if (delete_region_after) { if (interactive) gtk_text_buffer_delete_interactive (buffer, &start, &end, default_editable); else gtk_text_buffer_delete (buffer, &start, &end); } } } /** * gtk_text_buffer_cut_clipboard: * @buffer: a #GtkTextBuffer * @clipboard: the #GtkClipboard object to cut to * @default_editable: default editability of the buffer * * Copies the currently-selected text to a clipboard, then deletes * said text if it’s editable. **/ void gtk_text_buffer_cut_clipboard (GtkTextBuffer *buffer, GtkClipboard *clipboard, gboolean default_editable) { gtk_text_buffer_begin_user_action (buffer); cut_or_copy (buffer, clipboard, TRUE, TRUE, default_editable); gtk_text_buffer_end_user_action (buffer); } /** * gtk_text_buffer_copy_clipboard: * @buffer: a #GtkTextBuffer * @clipboard: the #GtkClipboard object to copy to * * Copies the currently-selected text to a clipboard. **/ void gtk_text_buffer_copy_clipboard (GtkTextBuffer *buffer, GtkClipboard *clipboard) { cut_or_copy (buffer, clipboard, FALSE, TRUE, TRUE); } /** * gtk_text_buffer_get_selection_bounds: * @buffer: a #GtkTextBuffer a #GtkTextBuffer * @start: (out): iterator to initialize with selection start * @end: (out): iterator to initialize with selection end * * Returns %TRUE if some text is selected; places the bounds * of the selection in @start and @end (if the selection has length 0, * then @start and @end are filled in with the same value). * @start and @end will be in ascending order. If @start and @end are * NULL, then they are not filled in, but the return value still indicates * whether text is selected. * * Returns: whether the selection has nonzero length **/ gboolean gtk_text_buffer_get_selection_bounds (GtkTextBuffer *buffer, GtkTextIter *start, GtkTextIter *end) { g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); return _gtk_text_btree_get_selection_bounds (get_btree (buffer), start, end); } /** * gtk_text_buffer_begin_user_action: * @buffer: a #GtkTextBuffer * * Called to indicate that the buffer operations between here and a * call to gtk_text_buffer_end_user_action() are part of a single * user-visible operation. The operations between * gtk_text_buffer_begin_user_action() and * gtk_text_buffer_end_user_action() can then be grouped when creating * an undo stack. #GtkTextBuffer maintains a count of calls to * gtk_text_buffer_begin_user_action() that have not been closed with * a call to gtk_text_buffer_end_user_action(), and emits the * “begin-user-action” and “end-user-action” signals only for the * outermost pair of calls. This allows you to build user actions * from other user actions. * * The “interactive” buffer mutation functions, such as * gtk_text_buffer_insert_interactive(), automatically call begin/end * user action around the buffer operations they perform, so there's * no need to add extra calls if you user action consists solely of a * single call to one of those functions. **/ void gtk_text_buffer_begin_user_action (GtkTextBuffer *buffer) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); buffer->priv->user_action_count += 1; if (buffer->priv->user_action_count == 1) { /* Outermost nested user action begin emits the signal */ g_signal_emit (buffer, signals[BEGIN_USER_ACTION], 0); } } /** * gtk_text_buffer_end_user_action: * @buffer: a #GtkTextBuffer * * Should be paired with a call to gtk_text_buffer_begin_user_action(). * See that function for a full explanation. **/ void gtk_text_buffer_end_user_action (GtkTextBuffer *buffer) { g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); g_return_if_fail (buffer->priv->user_action_count > 0); buffer->priv->user_action_count -= 1; if (buffer->priv->user_action_count == 0) { /* Ended the outermost-nested user action end, so emit the signal */ g_signal_emit (buffer, signals[END_USER_ACTION], 0); } } static void gtk_text_buffer_free_target_lists (GtkTextBuffer *buffer) { GtkTextBufferPrivate *priv = buffer->priv; if (priv->copy_target_list) { gtk_target_list_unref (priv->copy_target_list); priv->copy_target_list = NULL; gtk_target_table_free (priv->copy_target_entries, priv->n_copy_target_entries); priv->copy_target_entries = NULL; priv->n_copy_target_entries = 0; } if (priv->paste_target_list) { gtk_target_list_unref (priv->paste_target_list); priv->paste_target_list = NULL; gtk_target_table_free (priv->paste_target_entries, priv->n_paste_target_entries); priv->paste_target_entries = NULL; priv->n_paste_target_entries = 0; } } static GtkTargetList * gtk_text_buffer_get_target_list (GtkTextBuffer *buffer, gboolean deserializable, GtkTargetEntry **entries, gint *n_entries) { GtkTargetList *target_list; target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add (target_list, gdk_atom_intern_static_string ("GTK_TEXT_BUFFER_CONTENTS"), GTK_TARGET_SAME_APP, GTK_TEXT_BUFFER_TARGET_INFO_BUFFER_CONTENTS); gtk_target_list_add_rich_text_targets (target_list, GTK_TEXT_BUFFER_TARGET_INFO_RICH_TEXT, deserializable, buffer); gtk_target_list_add_text_targets (target_list, GTK_TEXT_BUFFER_TARGET_INFO_TEXT); *entries = gtk_target_table_new_from_list (target_list, n_entries); return target_list; } /** * gtk_text_buffer_get_copy_target_list: * @buffer: a #GtkTextBuffer * * This function returns the list of targets this text buffer can * provide for copying and as DND source. The targets in the list are * added with @info values from the #GtkTextBufferTargetInfo enum, * using gtk_target_list_add_rich_text_targets() and * gtk_target_list_add_text_targets(). * * Returns: (transfer none): the #GtkTargetList * * Since: 2.10 **/ GtkTargetList * gtk_text_buffer_get_copy_target_list (GtkTextBuffer *buffer) { GtkTextBufferPrivate *priv; g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); priv = buffer->priv; if (! priv->copy_target_list) priv->copy_target_list = gtk_text_buffer_get_target_list (buffer, FALSE, &priv->copy_target_entries, &priv->n_copy_target_entries); return priv->copy_target_list; } /** * gtk_text_buffer_get_paste_target_list: * @buffer: a #GtkTextBuffer * * This function returns the list of targets this text buffer supports * for pasting and as DND destination. The targets in the list are * added with @info values from the #GtkTextBufferTargetInfo enum, * using gtk_target_list_add_rich_text_targets() and * gtk_target_list_add_text_targets(). * * Returns: (transfer none): the #GtkTargetList * * Since: 2.10 **/ GtkTargetList * gtk_text_buffer_get_paste_target_list (GtkTextBuffer *buffer) { GtkTextBufferPrivate *priv; g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); priv = buffer->priv; if (! priv->paste_target_list) priv->paste_target_list = gtk_text_buffer_get_target_list (buffer, TRUE, &priv->paste_target_entries, &priv->n_paste_target_entries); return priv->paste_target_list; } /* * Logical attribute cache */ #define ATTR_CACHE_SIZE 2 typedef struct _CacheEntry CacheEntry; struct _CacheEntry { gint line; gint char_len; PangoLogAttr *attrs; }; struct _GtkTextLogAttrCache { gint chars_changed_stamp; CacheEntry entries[ATTR_CACHE_SIZE]; }; static void free_log_attr_cache (GtkTextLogAttrCache *cache) { gint i = 0; while (i < ATTR_CACHE_SIZE) { g_free (cache->entries[i].attrs); ++i; } g_slice_free (GtkTextLogAttrCache, cache); } static void clear_log_attr_cache (GtkTextLogAttrCache *cache) { gint i = 0; while (i < ATTR_CACHE_SIZE) { g_free (cache->entries[i].attrs); cache->entries[i].attrs = NULL; ++i; } } static PangoLogAttr* compute_log_attrs (const GtkTextIter *iter, gint *char_lenp) { GtkTextIter start; GtkTextIter end; gchar *paragraph; gint char_len, byte_len; PangoLogAttr *attrs = NULL; start = *iter; end = *iter; gtk_text_iter_set_line_offset (&start, 0); gtk_text_iter_forward_line (&end); paragraph = gtk_text_iter_get_slice (&start, &end); char_len = g_utf8_strlen (paragraph, -1); byte_len = strlen (paragraph); g_assert (char_len > 0); if (char_lenp) *char_lenp = char_len; attrs = g_new (PangoLogAttr, char_len + 1); /* FIXME we need to follow PangoLayout and allow different language * tags within the paragraph */ pango_get_log_attrs (paragraph, byte_len, -1, gtk_text_iter_get_language (&start), attrs, char_len + 1); g_free (paragraph); return attrs; } /* The return value from this is valid until you call this a second time. */ const PangoLogAttr* _gtk_text_buffer_get_line_log_attrs (GtkTextBuffer *buffer, const GtkTextIter *anywhere_in_line, gint *char_len) { GtkTextBufferPrivate *priv; gint line; GtkTextLogAttrCache *cache; gint i; g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); g_return_val_if_fail (anywhere_in_line != NULL, NULL); priv = buffer->priv; /* special-case for empty last line in buffer */ if (gtk_text_iter_is_end (anywhere_in_line) && gtk_text_iter_get_line_offset (anywhere_in_line) == 0) { if (char_len) *char_len = 0; return NULL; } /* FIXME we also need to recompute log attrs if the language tag at * the start of a paragraph changes */ if (priv->log_attr_cache == NULL) { priv->log_attr_cache = g_slice_new0 (GtkTextLogAttrCache); priv->log_attr_cache->chars_changed_stamp = _gtk_text_btree_get_chars_changed_stamp (get_btree (buffer)); } else if (priv->log_attr_cache->chars_changed_stamp != _gtk_text_btree_get_chars_changed_stamp (get_btree (buffer))) { clear_log_attr_cache (priv->log_attr_cache); } cache = priv->log_attr_cache; line = gtk_text_iter_get_line (anywhere_in_line); i = 0; while (i < ATTR_CACHE_SIZE) { if (cache->entries[i].attrs && cache->entries[i].line == line) { if (char_len) *char_len = cache->entries[i].char_len; return cache->entries[i].attrs; } ++i; } /* Not in cache; open up the first cache entry */ g_free (cache->entries[ATTR_CACHE_SIZE-1].attrs); g_memmove (cache->entries + 1, cache->entries, sizeof (CacheEntry) * (ATTR_CACHE_SIZE - 1)); cache->entries[0].line = line; cache->entries[0].attrs = compute_log_attrs (anywhere_in_line, &cache->entries[0].char_len); if (char_len) *char_len = cache->entries[0].char_len; return cache->entries[0].attrs; } void _gtk_text_buffer_notify_will_remove_tag (GtkTextBuffer *buffer, GtkTextTag *tag) { /* This removes tag from the buffer, but DOESN'T emit the * remove-tag signal, because we can't afford to have user * code messing things up at this point; the tag MUST be removed * entirely. */ if (buffer->priv->btree) _gtk_text_btree_notify_will_remove_tag (buffer->priv->btree, tag); } /* * Debug spew */ void _gtk_text_buffer_spew (GtkTextBuffer *buffer) { _gtk_text_btree_spew (get_btree (buffer)); } void _gtk_text_buffer_get_text_before (GtkTextBuffer *buffer, AtkTextBoundary boundary_type, GtkTextIter *position, GtkTextIter *start, GtkTextIter *end) { gint line_number; *start = *position; *end = *start; switch (boundary_type) { case ATK_TEXT_BOUNDARY_CHAR: gtk_text_iter_backward_char (start); break; case ATK_TEXT_BOUNDARY_WORD_START: if (!gtk_text_iter_starts_word (start)) gtk_text_iter_backward_word_start (start); *end = *start; gtk_text_iter_backward_word_start (start); break; case ATK_TEXT_BOUNDARY_WORD_END: if (gtk_text_iter_inside_word (start) && !gtk_text_iter_starts_word (start)) gtk_text_iter_backward_word_start (start); while (!gtk_text_iter_ends_word (start)) { if (!gtk_text_iter_backward_char (start)) break; } *end = *start; gtk_text_iter_backward_word_start (start); while (!gtk_text_iter_ends_word (start)) { if (!gtk_text_iter_backward_char (start)) break; } break; case ATK_TEXT_BOUNDARY_SENTENCE_START: if (!gtk_text_iter_starts_sentence (start)) gtk_text_iter_backward_sentence_start (start); *end = *start; gtk_text_iter_backward_sentence_start (start); break; case ATK_TEXT_BOUNDARY_SENTENCE_END: if (gtk_text_iter_inside_sentence (start) && !gtk_text_iter_starts_sentence (start)) gtk_text_iter_backward_sentence_start (start); while (!gtk_text_iter_ends_sentence (start)) { if (!gtk_text_iter_backward_char (start)) break; } *end = *start; gtk_text_iter_backward_sentence_start (start); while (!gtk_text_iter_ends_sentence (start)) { if (!gtk_text_iter_backward_char (start)) break; } break; case ATK_TEXT_BOUNDARY_LINE_START: line_number = gtk_text_iter_get_line (start); if (line_number == 0) { gtk_text_buffer_get_iter_at_offset (buffer, start, 0); } else { gtk_text_iter_backward_line (start); gtk_text_iter_forward_line (start); } *end = *start; gtk_text_iter_backward_line (start); break; case ATK_TEXT_BOUNDARY_LINE_END: line_number = gtk_text_iter_get_line (start); if (line_number == 0) { gtk_text_buffer_get_iter_at_offset (buffer, start, 0); *end = *start; } else { gtk_text_iter_backward_line (start); *end = *start; while (!gtk_text_iter_ends_line (start)) { if (!gtk_text_iter_backward_char (start)) break; } gtk_text_iter_forward_to_line_end (end); } break; } } void _gtk_text_buffer_get_text_at (GtkTextBuffer *buffer, AtkTextBoundary boundary_type, GtkTextIter *position, GtkTextIter *start, GtkTextIter *end) { gint line_number; *start = *position; *end = *start; switch (boundary_type) { case ATK_TEXT_BOUNDARY_CHAR: gtk_text_iter_forward_char (end); break; case ATK_TEXT_BOUNDARY_WORD_START: if (!gtk_text_iter_starts_word (start)) gtk_text_iter_backward_word_start (start); if (gtk_text_iter_inside_word (end)) gtk_text_iter_forward_word_end (end); while (!gtk_text_iter_starts_word (end)) { if (!gtk_text_iter_forward_char (end)) break; } break; case ATK_TEXT_BOUNDARY_WORD_END: if (gtk_text_iter_inside_word (start) && !gtk_text_iter_starts_word (start)) gtk_text_iter_backward_word_start (start); while (!gtk_text_iter_ends_word (start)) { if (!gtk_text_iter_backward_char (start)) break; } gtk_text_iter_forward_word_end (end); break; case ATK_TEXT_BOUNDARY_SENTENCE_START: if (!gtk_text_iter_starts_sentence (start)) gtk_text_iter_backward_sentence_start (start); if (gtk_text_iter_inside_sentence (end)) gtk_text_iter_forward_sentence_end (end); while (!gtk_text_iter_starts_sentence (end)) { if (!gtk_text_iter_forward_char (end)) break; } break; case ATK_TEXT_BOUNDARY_SENTENCE_END: if (gtk_text_iter_inside_sentence (start) && !gtk_text_iter_starts_sentence (start)) gtk_text_iter_backward_sentence_start (start); while (!gtk_text_iter_ends_sentence (start)) { if (!gtk_text_iter_backward_char (start)) break; } gtk_text_iter_forward_sentence_end (end); break; case ATK_TEXT_BOUNDARY_LINE_START: line_number = gtk_text_iter_get_line (start); if (line_number == 0) { gtk_text_buffer_get_iter_at_offset (buffer, start, 0); } else { gtk_text_iter_backward_line (start); gtk_text_iter_forward_line (start); } gtk_text_iter_forward_line (end); break; case ATK_TEXT_BOUNDARY_LINE_END: line_number = gtk_text_iter_get_line (start); if (line_number == 0) { gtk_text_buffer_get_iter_at_offset (buffer, start, 0); } else { gtk_text_iter_backward_line (start); gtk_text_iter_forward_line (start); } while (!gtk_text_iter_ends_line (start)) { if (!gtk_text_iter_backward_char (start)) break; } gtk_text_iter_forward_to_line_end (end); break; } } void _gtk_text_buffer_get_text_after (GtkTextBuffer *buffer, AtkTextBoundary boundary_type, GtkTextIter *position, GtkTextIter *start, GtkTextIter *end) { *start = *position; *end = *start; switch (boundary_type) { case ATK_TEXT_BOUNDARY_CHAR: gtk_text_iter_forward_char (start); gtk_text_iter_forward_chars (end, 2); break; case ATK_TEXT_BOUNDARY_WORD_START: if (gtk_text_iter_inside_word (end)) gtk_text_iter_forward_word_end (end); while (!gtk_text_iter_starts_word (end)) { if (!gtk_text_iter_forward_char (end)) break; } *start = *end; if (!gtk_text_iter_is_end (end)) { gtk_text_iter_forward_word_end (end); while (!gtk_text_iter_starts_word (end)) { if (!gtk_text_iter_forward_char (end)) break; } } break; case ATK_TEXT_BOUNDARY_WORD_END: gtk_text_iter_forward_word_end (end); *start = *end; if (!gtk_text_iter_is_end (end)) gtk_text_iter_forward_word_end (end); break; case ATK_TEXT_BOUNDARY_SENTENCE_START: if (gtk_text_iter_inside_sentence (end)) gtk_text_iter_forward_sentence_end (end); while (!gtk_text_iter_starts_sentence (end)) { if (!gtk_text_iter_forward_char (end)) break; } *start = *end; if (!gtk_text_iter_is_end (end)) { gtk_text_iter_forward_sentence_end (end); while (!gtk_text_iter_starts_sentence (end)) { if (!gtk_text_iter_forward_char (end)) break; } } break; case ATK_TEXT_BOUNDARY_SENTENCE_END: gtk_text_iter_forward_sentence_end (end); *start = *end; if (!gtk_text_iter_is_end (end)) gtk_text_iter_forward_sentence_end (end); break; case ATK_TEXT_BOUNDARY_LINE_START: gtk_text_iter_forward_line (end); *start = *end; gtk_text_iter_forward_line (end); break; case ATK_TEXT_BOUNDARY_LINE_END: gtk_text_iter_forward_line (start); *end = *start; if (!gtk_text_iter_is_end (start)) { while (!gtk_text_iter_ends_line (start)) { if (!gtk_text_iter_backward_char (start)) break; } gtk_text_iter_forward_to_line_end (end); } break; } }