forked from AuroraMiddleware/gtk
822 lines
28 KiB
C
822 lines
28 KiB
C
/* gtkrichtext.c
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*
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* Copyright (C) 2006 Imendio AB
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* Contact: Michael Natterer <mitch@imendio.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include "gtktextbufferrichtext.h"
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#include "gtktextbufferserialize.h"
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#include "gtkintl.h"
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typedef struct
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{
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gchar *mime_type;
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gboolean can_create_tags;
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GdkAtom atom;
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gpointer function;
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gpointer user_data;
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GDestroyNotify user_data_destroy;
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} GtkRichTextFormat;
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static GList * register_format (GList *formats,
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const gchar *mime_type,
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gpointer function,
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gpointer user_data,
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GDestroyNotify user_data_destroy,
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GdkAtom *atom);
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static GList * unregister_format (GList *formats,
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GdkAtom atom);
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static GdkAtom * get_formats (GList *formats,
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gint *n_formats);
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static void free_format (GtkRichTextFormat *format);
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static void free_format_list (GList *formats);
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static GQuark serialize_quark (void);
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static GQuark deserialize_quark (void);
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/**
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* gtk_text_buffer_register_serialize_format:
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* @buffer: a #GtkTextBuffer
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* @mime_type: the format’s mime-type
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* @function: the serialize function to register
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* @user_data: @function’s user_data
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* @user_data_destroy: a function to call when @user_data is no longer needed
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*
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* This function registers a rich text serialization @function along with
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* its @mime_type with the passed @buffer.
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*
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* Returns: (transfer none): the #GdkAtom that corresponds to the
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* newly registered format’s mime-type.
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*
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* Since: 2.10
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**/
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GdkAtom
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gtk_text_buffer_register_serialize_format (GtkTextBuffer *buffer,
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const gchar *mime_type,
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GtkTextBufferSerializeFunc function,
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gpointer user_data,
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GDestroyNotify user_data_destroy)
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{
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GList *formats;
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GdkAtom atom;
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g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), GDK_NONE);
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g_return_val_if_fail (mime_type != NULL && *mime_type != '\0', GDK_NONE);
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g_return_val_if_fail (function != NULL, GDK_NONE);
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formats = g_object_steal_qdata (G_OBJECT (buffer), serialize_quark ());
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formats = register_format (formats, mime_type,
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(gpointer) function,
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user_data, user_data_destroy,
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&atom);
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g_object_set_qdata_full (G_OBJECT (buffer), serialize_quark (),
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formats, (GDestroyNotify) free_format_list);
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g_object_notify (G_OBJECT (buffer), "copy-target-list");
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return atom;
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}
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/**
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* gtk_text_buffer_register_serialize_tagset:
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* @buffer: a #GtkTextBuffer
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* @tagset_name: (allow-none): an optional tagset name, on %NULL
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*
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* This function registers GTK+’s internal rich text serialization
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* format with the passed @buffer. The internal format does not comply
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* to any standard rich text format and only works between #GtkTextBuffer
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* instances. It is capable of serializing all of a text buffer’s tags
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* and embedded pixbufs.
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*
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* This function is just a wrapper around
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* gtk_text_buffer_register_serialize_format(). The mime type used
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* for registering is “application/x-gtk-text-buffer-rich-text”, or
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* “application/x-gtk-text-buffer-rich-text;format=@tagset_name” if a
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* @tagset_name was passed.
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*
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* The @tagset_name can be used to restrict the transfer of rich text
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* to buffers with compatible sets of tags, in order to avoid unknown
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* tags from being pasted. It is probably the common case to pass an
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* identifier != %NULL here, since the %NULL tagset requires the
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* receiving buffer to deal with with pasting of arbitrary tags.
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*
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* Returns: (transfer none): the #GdkAtom that corresponds to the
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* newly registered format’s mime-type.
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*
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* Since: 2.10
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**/
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GdkAtom
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gtk_text_buffer_register_serialize_tagset (GtkTextBuffer *buffer,
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const gchar *tagset_name)
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{
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gchar *mime_type = "application/x-gtk-text-buffer-rich-text";
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GdkAtom format;
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g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), GDK_NONE);
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g_return_val_if_fail (tagset_name == NULL || *tagset_name != '\0', GDK_NONE);
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if (tagset_name)
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mime_type =
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g_strdup_printf ("application/x-gtk-text-buffer-rich-text;format=%s",
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tagset_name);
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format = gtk_text_buffer_register_serialize_format (buffer, mime_type,
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_gtk_text_buffer_serialize_rich_text,
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NULL, NULL);
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if (tagset_name)
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g_free (mime_type);
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return format;
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}
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/**
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* gtk_text_buffer_register_deserialize_format:
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* @buffer: a #GtkTextBuffer
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* @mime_type: the format’s mime-type
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* @function: the deserialize function to register
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* @user_data: @function’s user_data
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* @user_data_destroy: a function to call when @user_data is no longer needed
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*
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* This function registers a rich text deserialization @function along with
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* its @mime_type with the passed @buffer.
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*
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* Returns: (transfer none): the #GdkAtom that corresponds to the
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* newly registered format’s mime-type.
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*
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* Since: 2.10
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**/
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GdkAtom
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gtk_text_buffer_register_deserialize_format (GtkTextBuffer *buffer,
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const gchar *mime_type,
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GtkTextBufferDeserializeFunc function,
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gpointer user_data,
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GDestroyNotify user_data_destroy)
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{
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GList *formats;
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GdkAtom atom;
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g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), GDK_NONE);
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g_return_val_if_fail (mime_type != NULL && *mime_type != '\0', GDK_NONE);
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g_return_val_if_fail (function != NULL, GDK_NONE);
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formats = g_object_steal_qdata (G_OBJECT (buffer), deserialize_quark ());
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formats = register_format (formats, mime_type,
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(gpointer) function,
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user_data, user_data_destroy,
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&atom);
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g_object_set_qdata_full (G_OBJECT (buffer), deserialize_quark (),
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formats, (GDestroyNotify) free_format_list);
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g_object_notify (G_OBJECT (buffer), "paste-target-list");
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return atom;
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}
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/**
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* gtk_text_buffer_register_deserialize_tagset:
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* @buffer: a #GtkTextBuffer
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* @tagset_name: (allow-none): an optional tagset name, on %NULL
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*
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* This function registers GTK+’s internal rich text serialization
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* format with the passed @buffer. See
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* gtk_text_buffer_register_serialize_tagset() for details.
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*
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* Returns: (transfer none): the #GdkAtom that corresponds to the
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* newly registered format’s mime-type.
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*
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* Since: 2.10
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**/
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GdkAtom
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gtk_text_buffer_register_deserialize_tagset (GtkTextBuffer *buffer,
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const gchar *tagset_name)
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{
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gchar *mime_type = "application/x-gtk-text-buffer-rich-text";
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GdkAtom format;
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g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), GDK_NONE);
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g_return_val_if_fail (tagset_name == NULL || *tagset_name != '\0', GDK_NONE);
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if (tagset_name)
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mime_type =
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g_strdup_printf ("application/x-gtk-text-buffer-rich-text;format=%s",
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tagset_name);
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format = gtk_text_buffer_register_deserialize_format (buffer, mime_type,
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_gtk_text_buffer_deserialize_rich_text,
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NULL, NULL);
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if (tagset_name)
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g_free (mime_type);
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return format;
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}
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/**
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* gtk_text_buffer_unregister_serialize_format:
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* @buffer: a #GtkTextBuffer
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* @format: a #GdkAtom representing a registered rich text format.
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*
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* This function unregisters a rich text format that was previously
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* registered using gtk_text_buffer_register_serialize_format() or
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* gtk_text_buffer_register_serialize_tagset()
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*
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* Since: 2.10
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**/
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void
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gtk_text_buffer_unregister_serialize_format (GtkTextBuffer *buffer,
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GdkAtom format)
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{
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GList *formats;
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g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
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g_return_if_fail (format != GDK_NONE);
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formats = g_object_steal_qdata (G_OBJECT (buffer), serialize_quark ());
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formats = unregister_format (formats, format);
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g_object_set_qdata_full (G_OBJECT (buffer), serialize_quark (),
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formats, (GDestroyNotify) free_format_list);
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g_object_notify (G_OBJECT (buffer), "copy-target-list");
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}
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/**
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* gtk_text_buffer_unregister_deserialize_format:
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* @buffer: a #GtkTextBuffer
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* @format: a #GdkAtom representing a registered rich text format.
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*
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* This function unregisters a rich text format that was previously
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* registered using gtk_text_buffer_register_deserialize_format() or
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* gtk_text_buffer_register_deserialize_tagset().
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*
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* Since: 2.10
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**/
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void
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gtk_text_buffer_unregister_deserialize_format (GtkTextBuffer *buffer,
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GdkAtom format)
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{
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GList *formats;
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g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
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g_return_if_fail (format != GDK_NONE);
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formats = g_object_steal_qdata (G_OBJECT (buffer), deserialize_quark ());
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formats = unregister_format (formats, format);
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g_object_set_qdata_full (G_OBJECT (buffer), deserialize_quark (),
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formats, (GDestroyNotify) free_format_list);
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g_object_notify (G_OBJECT (buffer), "paste-target-list");
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}
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/**
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* gtk_text_buffer_deserialize_set_can_create_tags:
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* @buffer: a #GtkTextBuffer
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* @format: a #GdkAtom representing a registered rich text format
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* @can_create_tags: whether deserializing this format may create tags
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*
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* Use this function to allow a rich text deserialization function to
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* create new tags in the receiving buffer. Note that using this
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* function is almost always a bad idea, because the rich text
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* functions you register should know how to map the rich text format
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* they handler to your text buffers set of tags.
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*
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* The ability of creating new (arbitrary!) tags in the receiving buffer
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* is meant for special rich text formats like the internal one that
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* is registered using gtk_text_buffer_register_deserialize_tagset(),
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* because that format is essentially a dump of the internal structure
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* of the source buffer, including its tag names.
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*
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* You should allow creation of tags only if you know what you are
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* doing, e.g. if you defined a tagset name for your application
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* suite’s text buffers and you know that it’s fine to receive new
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* tags from these buffers, because you know that your application can
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* handle the newly created tags.
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*
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* Since: 2.10
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**/
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void
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gtk_text_buffer_deserialize_set_can_create_tags (GtkTextBuffer *buffer,
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GdkAtom format,
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gboolean can_create_tags)
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{
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GList *formats;
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GList *list;
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gchar *format_name;
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g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
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g_return_if_fail (format != GDK_NONE);
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formats = g_object_get_qdata (G_OBJECT (buffer), deserialize_quark ());
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for (list = formats; list; list = g_list_next (list))
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{
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GtkRichTextFormat *fmt = list->data;
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if (fmt->atom == format)
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{
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fmt->can_create_tags = can_create_tags ? TRUE : FALSE;
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return;
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}
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}
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format_name = gdk_atom_name (format);
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g_warning ("%s: \"%s\" is not registered as deserializable format "
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"with text buffer %p",
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G_STRFUNC, format_name ? format_name : "not a GdkAtom", buffer);
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g_free (format_name);
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}
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/**
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* gtk_text_buffer_deserialize_get_can_create_tags:
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* @buffer: a #GtkTextBuffer
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* @format: a #GdkAtom representing a registered rich text format
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*
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* This functions returns the value set with
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* gtk_text_buffer_deserialize_set_can_create_tags()
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*
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* Returns: whether deserializing this format may create tags
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*
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* Since: 2.10
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**/
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gboolean
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gtk_text_buffer_deserialize_get_can_create_tags (GtkTextBuffer *buffer,
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GdkAtom format)
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{
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GList *formats;
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GList *list;
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gchar *format_name;
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g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
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g_return_val_if_fail (format != GDK_NONE, FALSE);
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formats = g_object_get_qdata (G_OBJECT (buffer), deserialize_quark ());
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for (list = formats; list; list = g_list_next (list))
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{
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GtkRichTextFormat *fmt = list->data;
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if (fmt->atom == format)
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{
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return fmt->can_create_tags;
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}
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}
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format_name = gdk_atom_name (format);
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g_warning ("%s: \"%s\" is not registered as deserializable format "
|
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"with text buffer %p",
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G_STRFUNC, format_name ? format_name : "not a GdkAtom", buffer);
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g_free (format_name);
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return FALSE;
|
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}
|
||
|
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/**
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* gtk_text_buffer_get_serialize_formats:
|
||
* @buffer: a #GtkTextBuffer
|
||
* @n_formats: (out): return location for the number of formats
|
||
*
|
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* This function returns the rich text serialize formats registered
|
||
* with @buffer using gtk_text_buffer_register_serialize_format() or
|
||
* gtk_text_buffer_register_serialize_tagset()
|
||
*
|
||
* Returns: (array length=n_formats) (transfer container): an array of
|
||
* #GdkAtoms representing the registered formats.
|
||
*
|
||
* Since: 2.10
|
||
**/
|
||
GdkAtom *
|
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gtk_text_buffer_get_serialize_formats (GtkTextBuffer *buffer,
|
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gint *n_formats)
|
||
{
|
||
GList *formats;
|
||
|
||
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
|
||
g_return_val_if_fail (n_formats != NULL, NULL);
|
||
|
||
formats = g_object_get_qdata (G_OBJECT (buffer), serialize_quark ());
|
||
|
||
return get_formats (formats, n_formats);
|
||
}
|
||
|
||
/**
|
||
* gtk_text_buffer_get_deserialize_formats:
|
||
* @buffer: a #GtkTextBuffer
|
||
* @n_formats: (out): return location for the number of formats
|
||
*
|
||
* This function returns the rich text deserialize formats registered
|
||
* with @buffer using gtk_text_buffer_register_deserialize_format() or
|
||
* gtk_text_buffer_register_deserialize_tagset()
|
||
*
|
||
* Returns: (array length=n_formats) (transfer container): an array of
|
||
* #GdkAtoms representing the registered formats.
|
||
*
|
||
* Since: 2.10
|
||
**/
|
||
GdkAtom *
|
||
gtk_text_buffer_get_deserialize_formats (GtkTextBuffer *buffer,
|
||
gint *n_formats)
|
||
{
|
||
GList *formats;
|
||
|
||
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
|
||
g_return_val_if_fail (n_formats != NULL, NULL);
|
||
|
||
formats = g_object_get_qdata (G_OBJECT (buffer), deserialize_quark ());
|
||
|
||
return get_formats (formats, n_formats);
|
||
}
|
||
|
||
/**
|
||
* gtk_text_buffer_serialize:
|
||
* @register_buffer: the #GtkTextBuffer @format is registered with
|
||
* @content_buffer: the #GtkTextBuffer to serialize
|
||
* @format: the rich text format to use for serializing
|
||
* @start: start of block of text to serialize
|
||
* @end: end of block of test to serialize
|
||
* @length: (out): return location for the length of the serialized data
|
||
*
|
||
* This function serializes the portion of text between @start
|
||
* and @end in the rich text format represented by @format.
|
||
*
|
||
* @formats to be used must be registered using
|
||
* gtk_text_buffer_register_serialize_format() or
|
||
* gtk_text_buffer_register_serialize_tagset() beforehand.
|
||
*
|
||
* Returns: (array length=length) (transfer full): the serialized
|
||
* data, encoded as @format
|
||
*
|
||
* Since: 2.10
|
||
**/
|
||
guint8 *
|
||
gtk_text_buffer_serialize (GtkTextBuffer *register_buffer,
|
||
GtkTextBuffer *content_buffer,
|
||
GdkAtom format,
|
||
const GtkTextIter *start,
|
||
const GtkTextIter *end,
|
||
gsize *length)
|
||
{
|
||
GList *formats;
|
||
GList *list;
|
||
|
||
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (register_buffer), NULL);
|
||
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (content_buffer), NULL);
|
||
g_return_val_if_fail (format != GDK_NONE, NULL);
|
||
g_return_val_if_fail (start != NULL, NULL);
|
||
g_return_val_if_fail (end != NULL, NULL);
|
||
g_return_val_if_fail (length != NULL, NULL);
|
||
|
||
*length = 0;
|
||
|
||
formats = g_object_get_qdata (G_OBJECT (register_buffer),
|
||
serialize_quark ());
|
||
|
||
for (list = formats; list; list = g_list_next (list))
|
||
{
|
||
GtkRichTextFormat *fmt = list->data;
|
||
|
||
if (fmt->atom == format)
|
||
{
|
||
GtkTextBufferSerializeFunc function = fmt->function;
|
||
|
||
return function (register_buffer, content_buffer,
|
||
start, end, length, fmt->user_data);
|
||
}
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
* gtk_text_buffer_deserialize:
|
||
* @register_buffer: the #GtkTextBuffer @format is registered with
|
||
* @content_buffer: the #GtkTextBuffer to deserialize into
|
||
* @format: the rich text format to use for deserializing
|
||
* @iter: insertion point for the deserialized text
|
||
* @data: (array length=length): data to deserialize
|
||
* @length: length of @data
|
||
* @error: return location for a #GError
|
||
*
|
||
* This function deserializes rich text in format @format and inserts
|
||
* it at @iter.
|
||
*
|
||
* @formats to be used must be registered using
|
||
* gtk_text_buffer_register_deserialize_format() or
|
||
* gtk_text_buffer_register_deserialize_tagset() beforehand.
|
||
*
|
||
* Returns: %TRUE on success, %FALSE otherwise.
|
||
*
|
||
* Since: 2.10
|
||
**/
|
||
gboolean
|
||
gtk_text_buffer_deserialize (GtkTextBuffer *register_buffer,
|
||
GtkTextBuffer *content_buffer,
|
||
GdkAtom format,
|
||
GtkTextIter *iter,
|
||
const guint8 *data,
|
||
gsize length,
|
||
GError **error)
|
||
{
|
||
GList *formats;
|
||
GList *list;
|
||
|
||
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (register_buffer), FALSE);
|
||
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (content_buffer), FALSE);
|
||
g_return_val_if_fail (format != GDK_NONE, FALSE);
|
||
g_return_val_if_fail (iter != NULL, FALSE);
|
||
g_return_val_if_fail (data != NULL, FALSE);
|
||
g_return_val_if_fail (length > 0, FALSE);
|
||
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
|
||
|
||
formats = g_object_get_qdata (G_OBJECT (register_buffer),
|
||
deserialize_quark ());
|
||
|
||
for (list = formats; list; list = g_list_next (list))
|
||
{
|
||
GtkRichTextFormat *fmt = list->data;
|
||
|
||
if (fmt->atom == format)
|
||
{
|
||
GtkTextBufferDeserializeFunc function = fmt->function;
|
||
gboolean success;
|
||
GSList *split_tags;
|
||
GSList *list;
|
||
GtkTextMark *left_end = NULL;
|
||
GtkTextMark *right_start = NULL;
|
||
GSList *left_start_list = NULL;
|
||
GSList *right_end_list = NULL;
|
||
|
||
/* We don't want the tags that are effective at the insertion
|
||
* point to affect the pasted text, therefore we remove and
|
||
* remember them, so they can be re-applied left and right of
|
||
* the inserted text after pasting
|
||
*/
|
||
split_tags = gtk_text_iter_get_tags (iter);
|
||
|
||
list = split_tags;
|
||
while (list)
|
||
{
|
||
GtkTextTag *tag = list->data;
|
||
|
||
list = g_slist_next (list);
|
||
|
||
/* If a tag begins at the insertion point, ignore it
|
||
* because it doesn't affect the pasted text
|
||
*/
|
||
if (gtk_text_iter_begins_tag (iter, tag))
|
||
split_tags = g_slist_remove (split_tags, tag);
|
||
}
|
||
|
||
if (split_tags)
|
||
{
|
||
/* Need to remember text marks, because text iters
|
||
* don't survive pasting
|
||
*/
|
||
left_end = gtk_text_buffer_create_mark (content_buffer,
|
||
NULL, iter, TRUE);
|
||
right_start = gtk_text_buffer_create_mark (content_buffer,
|
||
NULL, iter, FALSE);
|
||
|
||
for (list = split_tags; list; list = g_slist_next (list))
|
||
{
|
||
GtkTextTag *tag = list->data;
|
||
GtkTextIter *backward_toggle = gtk_text_iter_copy (iter);
|
||
GtkTextIter *forward_toggle = gtk_text_iter_copy (iter);
|
||
GtkTextMark *left_start = NULL;
|
||
GtkTextMark *right_end = NULL;
|
||
|
||
gtk_text_iter_backward_to_tag_toggle (backward_toggle, tag);
|
||
left_start = gtk_text_buffer_create_mark (content_buffer,
|
||
NULL,
|
||
backward_toggle,
|
||
FALSE);
|
||
|
||
gtk_text_iter_forward_to_tag_toggle (forward_toggle, tag);
|
||
right_end = gtk_text_buffer_create_mark (content_buffer,
|
||
NULL,
|
||
forward_toggle,
|
||
TRUE);
|
||
|
||
left_start_list = g_slist_prepend (left_start_list, left_start);
|
||
right_end_list = g_slist_prepend (right_end_list, right_end);
|
||
|
||
gtk_text_buffer_remove_tag (content_buffer, tag,
|
||
backward_toggle,
|
||
forward_toggle);
|
||
|
||
gtk_text_iter_free (forward_toggle);
|
||
gtk_text_iter_free (backward_toggle);
|
||
}
|
||
|
||
left_start_list = g_slist_reverse (left_start_list);
|
||
right_end_list = g_slist_reverse (right_end_list);
|
||
}
|
||
|
||
success = function (register_buffer, content_buffer,
|
||
iter, data, length,
|
||
fmt->can_create_tags,
|
||
fmt->user_data,
|
||
error);
|
||
|
||
if (!success && error != NULL && *error == NULL)
|
||
g_set_error (error, 0, 0,
|
||
_("Unknown error when trying to deserialize %s"),
|
||
gdk_atom_name (format));
|
||
|
||
if (split_tags)
|
||
{
|
||
GSList *left_list;
|
||
GSList *right_list;
|
||
GtkTextIter left_e;
|
||
GtkTextIter right_s;
|
||
|
||
/* Turn the remembered marks back into iters so they
|
||
* can by used to re-apply the remembered tags
|
||
*/
|
||
gtk_text_buffer_get_iter_at_mark (content_buffer,
|
||
&left_e, left_end);
|
||
gtk_text_buffer_get_iter_at_mark (content_buffer,
|
||
&right_s, right_start);
|
||
|
||
for (list = split_tags,
|
||
left_list = left_start_list,
|
||
right_list = right_end_list;
|
||
list && left_list && right_list;
|
||
list = g_slist_next (list),
|
||
left_list = g_slist_next (left_list),
|
||
right_list = g_slist_next (right_list))
|
||
{
|
||
GtkTextTag *tag = list->data;
|
||
GtkTextMark *left_start = left_list->data;
|
||
GtkTextMark *right_end = right_list->data;
|
||
GtkTextIter left_s;
|
||
GtkTextIter right_e;
|
||
|
||
gtk_text_buffer_get_iter_at_mark (content_buffer,
|
||
&left_s, left_start);
|
||
gtk_text_buffer_get_iter_at_mark (content_buffer,
|
||
&right_e, right_end);
|
||
|
||
gtk_text_buffer_apply_tag (content_buffer, tag,
|
||
&left_s, &left_e);
|
||
gtk_text_buffer_apply_tag (content_buffer, tag,
|
||
&right_s, &right_e);
|
||
|
||
gtk_text_buffer_delete_mark (content_buffer, left_start);
|
||
gtk_text_buffer_delete_mark (content_buffer, right_end);
|
||
}
|
||
|
||
gtk_text_buffer_delete_mark (content_buffer, left_end);
|
||
gtk_text_buffer_delete_mark (content_buffer, right_start);
|
||
|
||
g_slist_free (split_tags);
|
||
g_slist_free (left_start_list);
|
||
g_slist_free (right_end_list);
|
||
}
|
||
|
||
return success;
|
||
}
|
||
}
|
||
|
||
g_set_error (error, 0, 0,
|
||
_("No deserialize function found for format %s"),
|
||
gdk_atom_name (format));
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
|
||
/* private functions */
|
||
|
||
static GList *
|
||
register_format (GList *formats,
|
||
const gchar *mime_type,
|
||
gpointer function,
|
||
gpointer user_data,
|
||
GDestroyNotify user_data_destroy,
|
||
GdkAtom *atom)
|
||
{
|
||
GtkRichTextFormat *format;
|
||
|
||
*atom = gdk_atom_intern (mime_type, FALSE);
|
||
|
||
formats = unregister_format (formats, *atom);
|
||
|
||
format = g_new0 (GtkRichTextFormat, 1);
|
||
|
||
format->mime_type = g_strdup (mime_type);
|
||
format->can_create_tags = FALSE;
|
||
format->atom = *atom;
|
||
format->function = function;
|
||
format->user_data = user_data;
|
||
format->user_data_destroy = user_data_destroy;
|
||
|
||
return g_list_append (formats, format);
|
||
}
|
||
|
||
static GList *
|
||
unregister_format (GList *formats,
|
||
GdkAtom atom)
|
||
{
|
||
GList *list;
|
||
|
||
for (list = formats; list; list = g_list_next (list))
|
||
{
|
||
GtkRichTextFormat *format = list->data;
|
||
|
||
if (format->atom == atom)
|
||
{
|
||
free_format (format);
|
||
|
||
return g_list_delete_link (formats, list);
|
||
}
|
||
}
|
||
|
||
return formats;
|
||
}
|
||
|
||
static GdkAtom *
|
||
get_formats (GList *formats,
|
||
gint *n_formats)
|
||
{
|
||
GdkAtom *array;
|
||
GList *list;
|
||
gint i;
|
||
|
||
*n_formats = g_list_length (formats);
|
||
array = g_new0 (GdkAtom, *n_formats);
|
||
|
||
for (list = formats, i = 0; list; list = g_list_next (list), i++)
|
||
{
|
||
GtkRichTextFormat *format = list->data;
|
||
|
||
array[i] = format->atom;
|
||
}
|
||
|
||
return array;
|
||
}
|
||
|
||
static void
|
||
free_format (GtkRichTextFormat *format)
|
||
{
|
||
if (format->user_data_destroy)
|
||
format->user_data_destroy (format->user_data);
|
||
|
||
g_free (format->mime_type);
|
||
g_free (format);
|
||
}
|
||
|
||
static void
|
||
free_format_list (GList *formats)
|
||
{
|
||
g_list_free_full (formats, (GDestroyNotify) free_format);
|
||
}
|
||
|
||
static GQuark
|
||
serialize_quark (void)
|
||
{
|
||
static GQuark quark = 0;
|
||
|
||
if (! quark)
|
||
quark = g_quark_from_static_string ("gtk-text-buffer-serialize-formats");
|
||
|
||
return quark;
|
||
}
|
||
|
||
static GQuark
|
||
deserialize_quark (void)
|
||
{
|
||
static GQuark quark = 0;
|
||
|
||
if (! quark)
|
||
quark = g_quark_from_static_string ("gtk-text-buffer-deserialize-formats");
|
||
|
||
return quark;
|
||
}
|