forked from AuroraMiddleware/gtk
f55cffb074
2005-08-31 Matthias Clasen <mclasen@redhat.com> * io-ani-animation.c (gdk_pixbuf_ani_anim_iter_get_type) (gdk_pixbuf_ani_anim_get_type): * io-gif-animation.c (gdk_pixbuf_gif_anim_get_type) (gdk_pixbuf_gif_anim_iter_get_type): * gdk-pixbuf-loader.c (gdk_pixbuf_loader_get_type): * gdk-pixbuf.c (gdk_pixbuf_get_type): * gdk-pixbuf-animation.c (gdk_pixbuf_animation_get_type): Intern type names before registering the type to avoid unnecessary copies.
813 lines
29 KiB
C
813 lines
29 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
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/* GdkPixbuf library - Progressive loader object
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*
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* Copyright (C) 1999 The Free Software Foundation
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*
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* Authors: Mark Crichton <crichton@gimp.org>
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* Miguel de Icaza <miguel@gnu.org>
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* Federico Mena-Quintero <federico@gimp.org>
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* Jonathan Blandford <jrb@redhat.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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include <string.h>
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#include "gdk-pixbuf-private.h"
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#include "gdk-pixbuf-animation.h"
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#include "gdk-pixbuf-io.h"
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#include "gdk-pixbuf-loader.h"
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#include "gdk-pixbuf-marshal.h"
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#include "gdk-pixbuf-alias.h"
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enum {
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SIZE_PREPARED,
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AREA_PREPARED,
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AREA_UPDATED,
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CLOSED,
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LAST_SIGNAL
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};
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static void gdk_pixbuf_loader_class_init (GdkPixbufLoaderClass *klass);
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static void gdk_pixbuf_loader_init (GdkPixbufLoader *loader);
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static void gdk_pixbuf_loader_finalize (GObject *loader);
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static gpointer parent_class = NULL;
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static guint pixbuf_loader_signals[LAST_SIGNAL] = { 0 };
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/* Internal data */
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#define LOADER_HEADER_SIZE 128
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typedef struct
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{
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GdkPixbufAnimation *animation;
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gboolean closed;
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gboolean holds_threadlock;
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guchar header_buf[LOADER_HEADER_SIZE];
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gint header_buf_offset;
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GdkPixbufModule *image_module;
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gpointer context;
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gint width;
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gint height;
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gboolean size_fixed;
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gboolean needs_scale;
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} GdkPixbufLoaderPrivate;
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/**
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* gdk_pixbuf_loader_get_type:
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*
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* Registers the #GdkPixbufLoader class if necessary, and returns the type ID
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* associated to it.
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*
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* Return value: The type ID of the #GdkPixbufLoader class.
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**/
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GType
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gdk_pixbuf_loader_get_type (void)
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{
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static GType loader_type = 0;
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if (!loader_type)
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{
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static const GTypeInfo loader_info = {
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sizeof (GdkPixbufLoaderClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gdk_pixbuf_loader_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GdkPixbufLoader),
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0, /* n_preallocs */
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(GInstanceInitFunc) gdk_pixbuf_loader_init
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};
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loader_type = g_type_register_static (G_TYPE_OBJECT,
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g_intern_static_string ("GdkPixbufLoader"),
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&loader_info,
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0);
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}
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return loader_type;
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}
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static void
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gdk_pixbuf_loader_class_init (GdkPixbufLoaderClass *class)
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{
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GObjectClass *object_class;
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object_class = (GObjectClass *) class;
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parent_class = g_type_class_peek_parent (class);
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object_class->finalize = gdk_pixbuf_loader_finalize;
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/**
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* GdkPixbufLoader::size-prepared:
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* @loader: the object which received the signal.
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* @width: the original width of the image
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* @height: the original height of the image
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*
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* This signal is emitted when the pixbuf loader has been fed the
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* initial amount of data that is required to figure out the size
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* of the image that it will create. Applications can call
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* gdk_pixbuf_loader_set_size() in response to this signal to set
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* the desired size to which the image should be scaled.
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*/
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pixbuf_loader_signals[SIZE_PREPARED] =
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g_signal_new ("size_prepared",
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GdkPixbufLoaderClass, size_prepared),
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NULL, NULL,
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_gdk_pixbuf_marshal_VOID__INT_INT,
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G_TYPE_NONE, 2,
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G_TYPE_INT,
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G_TYPE_INT);
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/**
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* GdkPixbufLoader::area-prepared:
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* @loader: the object which received the signal.
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*
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* This signal is emitted when the pixbuf loader has allocated the
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* pixbuf in the desired size. After this signal is emitted,
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* applications can call gdk_pixbuf_loader_get_pixbuf() to fetch
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* the partially-loaded pixbuf.
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*/
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pixbuf_loader_signals[AREA_PREPARED] =
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g_signal_new ("area_prepared",
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GdkPixbufLoaderClass, area_prepared),
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NULL, NULL,
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_gdk_pixbuf_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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/**
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* GdkPixbufLoader::area-updated:
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* @loader: the object which received the signal.
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* @x: X offset of upper-left corner of the updated area.
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* @y: Y offset of upper-left corner of the updated area.
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* @width: Width of updated area.
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* @height: Height of updated area.
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*
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* This signal is emitted when a significant area of the image being
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* loaded has been updated. Normally it means that a complete
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* scanline has been read in, but it could be a different area as
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* well. Applications can use this signal to know when to repaint
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* areas of an image that is being loaded.
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*/
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pixbuf_loader_signals[AREA_UPDATED] =
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g_signal_new ("area_updated",
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GdkPixbufLoaderClass, area_updated),
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NULL, NULL,
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_gdk_pixbuf_marshal_VOID__INT_INT_INT_INT,
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G_TYPE_NONE, 4,
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G_TYPE_INT,
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G_TYPE_INT,
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G_TYPE_INT,
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G_TYPE_INT);
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/**
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* GdkPixbufLoader::closed:
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* @loader: the object which received the signal.
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*
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* This signal is emitted when gdk_pixbuf_loader_close() is called.
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* It can be used by different parts of an application to receive
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* notification when an image loader is closed by the code that
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* drives it.
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*/
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pixbuf_loader_signals[CLOSED] =
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g_signal_new ("closed",
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GdkPixbufLoaderClass, closed),
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NULL, NULL,
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_gdk_pixbuf_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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}
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static void
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gdk_pixbuf_loader_init (GdkPixbufLoader *loader)
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{
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GdkPixbufLoaderPrivate *priv;
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priv = g_new0 (GdkPixbufLoaderPrivate, 1);
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priv->width = -1;
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priv->height = -1;
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loader->priv = priv;
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}
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static void
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gdk_pixbuf_loader_finalize (GObject *object)
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{
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GdkPixbufLoader *loader;
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GdkPixbufLoaderPrivate *priv = NULL;
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loader = GDK_PIXBUF_LOADER (object);
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priv = loader->priv;
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if (!priv->closed) {
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g_warning ("GdkPixbufLoader finalized without calling gdk_pixbuf_loader_close() - this is not allowed. You must explicitly end the data stream to the loader before dropping the last reference.");
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if (priv->holds_threadlock) {
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_gdk_pixbuf_unlock (priv->image_module);
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}
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}
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if (priv->animation)
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g_object_unref (priv->animation);
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g_free (priv);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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/**
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* gdk_pixbuf_loader_set_size:
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* @loader: A pixbuf loader.
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* @width: The desired width of the image being loaded.
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* @height: The desired height of the image being loaded.
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*
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* Causes the image to be scaled while it is loaded. The desired
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* image size can be determined relative to the original size of
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* the image by calling gdk_pixbuf_loader_set_size() from a
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* signal handler for the ::size_prepared signal.
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*
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* Attempts to set the desired image size are ignored after the
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* emission of the ::size_prepared signal.
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*
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* Since: 2.2
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*/
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void
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gdk_pixbuf_loader_set_size (GdkPixbufLoader *loader,
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gint width,
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gint height)
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{
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GdkPixbufLoaderPrivate *priv = GDK_PIXBUF_LOADER (loader)->priv;
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g_return_if_fail (width >= 0 && height >= 0);
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if (!priv->size_fixed)
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{
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priv->width = width;
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priv->height = height;
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}
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}
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static void
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gdk_pixbuf_loader_size_func (gint *width, gint *height, gpointer loader)
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{
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GdkPixbufLoaderPrivate *priv = GDK_PIXBUF_LOADER (loader)->priv;
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/* allow calling gdk_pixbuf_loader_set_size() before the signal */
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if (priv->width == -1 && priv->height == -1)
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{
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priv->width = *width;
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priv->height = *height;
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}
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g_signal_emit (loader, pixbuf_loader_signals[SIZE_PREPARED], 0, *width, *height);
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priv->size_fixed = TRUE;
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*width = priv->width;
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*height = priv->height;
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}
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static void
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gdk_pixbuf_loader_prepare (GdkPixbuf *pixbuf,
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GdkPixbufAnimation *anim,
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gpointer loader)
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{
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GdkPixbufLoaderPrivate *priv = GDK_PIXBUF_LOADER (loader)->priv;
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g_return_if_fail (pixbuf != NULL);
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if (!priv->size_fixed)
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{
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/* Defend against lazy loaders which don't call size_func */
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gint width = gdk_pixbuf_get_width (pixbuf);
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gint height = gdk_pixbuf_get_height (pixbuf);
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gdk_pixbuf_loader_size_func (&width, &height, loader);
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}
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priv->needs_scale = FALSE;
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if (priv->width > 0 && priv->height > 0 &&
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(priv->width != gdk_pixbuf_get_width (pixbuf) ||
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priv->height != gdk_pixbuf_get_height (pixbuf)))
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priv->needs_scale = TRUE;
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if (anim)
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g_object_ref (anim);
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else
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anim = gdk_pixbuf_non_anim_new (pixbuf);
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priv->animation = anim;
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if (!priv->needs_scale)
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g_signal_emit (loader, pixbuf_loader_signals[AREA_PREPARED], 0);
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}
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static void
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gdk_pixbuf_loader_update (GdkPixbuf *pixbuf,
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gint x,
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gint y,
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gint width,
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gint height,
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gpointer loader)
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{
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GdkPixbufLoaderPrivate *priv = GDK_PIXBUF_LOADER (loader)->priv;
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if (!priv->needs_scale)
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g_signal_emit (loader,
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pixbuf_loader_signals[AREA_UPDATED],
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0,
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x, y,
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/* sanity check in here. Defend against an errant loader */
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MIN (width, gdk_pixbuf_animation_get_width (priv->animation)),
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MIN (height, gdk_pixbuf_animation_get_height (priv->animation)));
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}
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static gint
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gdk_pixbuf_loader_load_module (GdkPixbufLoader *loader,
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const char *image_type,
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GError **error)
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{
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GdkPixbufLoaderPrivate *priv = loader->priv;
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if (image_type)
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{
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priv->image_module = _gdk_pixbuf_get_named_module (image_type,
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error);
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}
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else
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{
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priv->image_module = _gdk_pixbuf_get_module (priv->header_buf,
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priv->header_buf_offset,
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NULL,
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error);
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}
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if (priv->image_module == NULL)
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return 0;
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if (priv->image_module->module == NULL)
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if (!_gdk_pixbuf_load_module (priv->image_module, error))
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return 0;
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if (priv->image_module->module == NULL)
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return 0;
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if ((priv->image_module->begin_load == NULL) ||
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(priv->image_module->stop_load == NULL) ||
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(priv->image_module->load_increment == NULL))
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{
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g_set_error (error,
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GDK_PIXBUF_ERROR,
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GDK_PIXBUF_ERROR_UNSUPPORTED_OPERATION,
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_("Incremental loading of image type '%s' is not supported"),
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priv->image_module->module_name);
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return 0;
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}
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if (!priv->holds_threadlock) {
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priv->holds_threadlock = _gdk_pixbuf_lock (priv->image_module);
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}
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priv->context = priv->image_module->begin_load (gdk_pixbuf_loader_size_func,
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gdk_pixbuf_loader_prepare,
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gdk_pixbuf_loader_update,
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loader,
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error);
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if (priv->context == NULL)
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{
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/* Defense against broken loaders; DO NOT take this as a GError
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* example
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*/
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if (error && *error == NULL)
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{
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g_warning ("Bug! loader '%s' didn't set an error on failure",
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priv->image_module->module_name);
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g_set_error (error,
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GDK_PIXBUF_ERROR,
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GDK_PIXBUF_ERROR_FAILED,
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_("Internal error: Image loader module '%s'"
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" failed to begin loading an image, but didn't"
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" give a reason for the failure"),
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priv->image_module->module_name);
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}
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return 0;
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}
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if (priv->header_buf_offset
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&& priv->image_module->load_increment (priv->context, priv->header_buf, priv->header_buf_offset, error))
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return priv->header_buf_offset;
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return 0;
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}
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static int
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gdk_pixbuf_loader_eat_header_write (GdkPixbufLoader *loader,
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const guchar *buf,
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gsize count,
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GError **error)
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{
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gint n_bytes;
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GdkPixbufLoaderPrivate *priv = loader->priv;
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n_bytes = MIN(LOADER_HEADER_SIZE - priv->header_buf_offset, count);
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memcpy (priv->header_buf + priv->header_buf_offset, buf, n_bytes);
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priv->header_buf_offset += n_bytes;
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if (priv->header_buf_offset >= LOADER_HEADER_SIZE)
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{
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if (gdk_pixbuf_loader_load_module (loader, NULL, error) == 0)
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return 0;
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}
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return n_bytes;
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}
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/**
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* gdk_pixbuf_loader_write:
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* @loader: A pixbuf loader.
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* @buf: Pointer to image data.
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* @count: Length of the @buf buffer in bytes.
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* @error: return location for errors
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*
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* This will cause a pixbuf loader to parse the next @count bytes of
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* an image. It will return %TRUE if the data was loaded successfully,
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* and %FALSE if an error occurred. In the latter case, the loader
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* will be closed, and will not accept further writes. If %FALSE is
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* returned, @error will be set to an error from the #GDK_PIXBUF_ERROR
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* or #G_FILE_ERROR domains.
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*
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* Return value: %TRUE if the write was successful, or %FALSE if the loader
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* cannot parse the buffer.
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**/
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gboolean
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gdk_pixbuf_loader_write (GdkPixbufLoader *loader,
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const guchar *buf,
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gsize count,
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GError **error)
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{
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GdkPixbufLoaderPrivate *priv;
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g_return_val_if_fail (loader != NULL, FALSE);
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g_return_val_if_fail (GDK_IS_PIXBUF_LOADER (loader), FALSE);
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g_return_val_if_fail (buf != NULL, FALSE);
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g_return_val_if_fail (count >= 0, FALSE);
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g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
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priv = loader->priv;
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/* we expect it's not to be closed */
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g_return_val_if_fail (priv->closed == FALSE, FALSE);
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if (priv->image_module == NULL)
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{
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gint eaten;
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eaten = gdk_pixbuf_loader_eat_header_write (loader, buf, count, error);
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if (eaten <= 0)
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return FALSE;
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count -= eaten;
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buf += eaten;
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}
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if (count > 0 && priv->image_module->load_increment)
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{
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gboolean retval;
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retval = priv->image_module->load_increment (priv->context, buf, count,
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error);
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if (!retval && error && *error == NULL)
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{
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/* Fix up busted image loader */
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g_warning ("Bug! loader '%s' didn't set an error on failure",
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priv->image_module->module_name);
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g_set_error (error,
|
|
GDK_PIXBUF_ERROR,
|
|
GDK_PIXBUF_ERROR_FAILED,
|
|
_("Internal error: Image loader module '%s'"
|
|
" failed to begin loading an image, but didn't"
|
|
" give a reason for the failure"),
|
|
priv->image_module->module_name);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gdk_pixbuf_loader_new:
|
|
*
|
|
* Creates a new pixbuf loader object.
|
|
*
|
|
* Return value: A newly-created pixbuf loader.
|
|
**/
|
|
GdkPixbufLoader *
|
|
gdk_pixbuf_loader_new (void)
|
|
{
|
|
return g_object_new (GDK_TYPE_PIXBUF_LOADER, NULL);
|
|
}
|
|
|
|
/**
|
|
* gdk_pixbuf_loader_new_with_type:
|
|
* @image_type: name of the image format to be loaded with the image
|
|
* @error: return location for an allocated #GError, or %NULL to ignore errors
|
|
*
|
|
* Creates a new pixbuf loader object that always attempts to parse
|
|
* image data as if it were an image of type @image_type, instead of
|
|
* identifying the type automatically. Useful if you want an error if
|
|
* the image isn't the expected type, for loading image formats
|
|
* that can't be reliably identified by looking at the data, or if
|
|
* the user manually forces a specific type.
|
|
*
|
|
* Return value: A newly-created pixbuf loader.
|
|
**/
|
|
GdkPixbufLoader *
|
|
gdk_pixbuf_loader_new_with_type (const char *image_type,
|
|
GError **error)
|
|
{
|
|
GdkPixbufLoader *retval;
|
|
GError *tmp;
|
|
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
|
|
|
|
retval = g_object_new (GDK_TYPE_PIXBUF_LOADER, NULL);
|
|
|
|
tmp = NULL;
|
|
gdk_pixbuf_loader_load_module (retval, image_type, &tmp);
|
|
if (tmp != NULL)
|
|
{
|
|
g_propagate_error (error, tmp);
|
|
gdk_pixbuf_loader_close (retval, NULL);
|
|
g_object_unref (retval);
|
|
return NULL;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* gdk_pixbuf_loader_new_with_mime_type:
|
|
* @mime_type: the mime type to be loaded
|
|
* @error: return location for an allocated #GError, or %NULL to ignore errors
|
|
*
|
|
* Creates a new pixbuf loader object that always attempts to parse
|
|
* image data as if it were an image of mime type @mime_type, instead of
|
|
* identifying the type automatically. Useful if you want an error if
|
|
* the image isn't the expected mime type, for loading image formats
|
|
* that can't be reliably identified by looking at the data, or if
|
|
* the user manually forces a specific mime type.
|
|
*
|
|
* Return value: A newly-created pixbuf loader.
|
|
* Since: 2.4
|
|
**/
|
|
GdkPixbufLoader *
|
|
gdk_pixbuf_loader_new_with_mime_type (const char *mime_type,
|
|
GError **error)
|
|
{
|
|
const char * image_type = NULL;
|
|
char ** mimes;
|
|
|
|
GdkPixbufLoader *retval;
|
|
GError *tmp;
|
|
|
|
GSList * formats;
|
|
GdkPixbufFormat *info;
|
|
int i, j, length;
|
|
|
|
formats = gdk_pixbuf_get_formats ();
|
|
length = g_slist_length (formats);
|
|
|
|
for (i = 0; i < length && image_type == NULL; i++) {
|
|
info = (GdkPixbufFormat *)g_slist_nth_data (formats, i);
|
|
mimes = info->mime_types;
|
|
|
|
for (j = 0; mimes[j] != NULL; j++)
|
|
if (g_ascii_strcasecmp (mimes[j], mime_type) == 0) {
|
|
image_type = info->name;
|
|
break;
|
|
}
|
|
}
|
|
|
|
g_slist_free (formats);
|
|
|
|
retval = g_object_new (GDK_TYPE_PIXBUF_LOADER, NULL);
|
|
|
|
tmp = NULL;
|
|
gdk_pixbuf_loader_load_module (retval, image_type, &tmp);
|
|
if (tmp != NULL)
|
|
{
|
|
g_propagate_error (error, tmp);
|
|
gdk_pixbuf_loader_close (retval, NULL);
|
|
g_object_unref (retval);
|
|
return NULL;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* gdk_pixbuf_loader_get_pixbuf:
|
|
* @loader: A pixbuf loader.
|
|
*
|
|
* Queries the #GdkPixbuf that a pixbuf loader is currently creating.
|
|
* In general it only makes sense to call this function after the
|
|
* "area_prepared" signal has been emitted by the loader; this means
|
|
* that enough data has been read to know the size of the image that
|
|
* will be allocated. If the loader has not received enough data via
|
|
* gdk_pixbuf_loader_write(), then this function returns %NULL. The
|
|
* returned pixbuf will be the same in all future calls to the loader,
|
|
* so simply calling g_object_ref() should be sufficient to continue
|
|
* using it. Additionally, if the loader is an animation, it will
|
|
* return the "static image" of the animation
|
|
* (see gdk_pixbuf_animation_get_static_image()).
|
|
*
|
|
* Return value: The #GdkPixbuf that the loader is creating, or %NULL if not
|
|
* enough data has been read to determine how to create the image buffer.
|
|
**/
|
|
GdkPixbuf *
|
|
gdk_pixbuf_loader_get_pixbuf (GdkPixbufLoader *loader)
|
|
{
|
|
GdkPixbufLoaderPrivate *priv;
|
|
|
|
g_return_val_if_fail (loader != NULL, NULL);
|
|
g_return_val_if_fail (GDK_IS_PIXBUF_LOADER (loader), NULL);
|
|
|
|
priv = loader->priv;
|
|
|
|
if (priv->animation)
|
|
return gdk_pixbuf_animation_get_static_image (priv->animation);
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* gdk_pixbuf_loader_get_animation:
|
|
* @loader: A pixbuf loader
|
|
*
|
|
* Queries the #GdkPixbufAnimation that a pixbuf loader is currently creating.
|
|
* In general it only makes sense to call this function after the "area_prepared"
|
|
* signal has been emitted by the loader. If the loader doesn't have enough
|
|
* bytes yet (hasn't emitted the "area_prepared" signal) this function will
|
|
* return %NULL.
|
|
*
|
|
* Return value: The #GdkPixbufAnimation that the loader is loading, or %NULL if
|
|
not enough data has been read to determine the information.
|
|
**/
|
|
GdkPixbufAnimation *
|
|
gdk_pixbuf_loader_get_animation (GdkPixbufLoader *loader)
|
|
{
|
|
GdkPixbufLoaderPrivate *priv;
|
|
|
|
g_return_val_if_fail (loader != NULL, NULL);
|
|
g_return_val_if_fail (GDK_IS_PIXBUF_LOADER (loader), NULL);
|
|
|
|
priv = loader->priv;
|
|
|
|
return priv->animation;
|
|
}
|
|
|
|
/**
|
|
* gdk_pixbuf_loader_close:
|
|
* @loader: A pixbuf loader.
|
|
* @error: return location for a #GError, or %NULL to ignore errors
|
|
*
|
|
* Informs a pixbuf loader that no further writes with
|
|
* gdk_pixbuf_loader_write() will occur, so that it can free its
|
|
* internal loading structures. Also, tries to parse any data that
|
|
* hasn't yet been parsed; if the remaining data is partial or
|
|
* corrupt, an error will be returned. If %FALSE is returned, @error
|
|
* will be set to an error from the #GDK_PIXBUF_ERROR or #G_FILE_ERROR
|
|
* domains. If you're just cancelling a load rather than expecting it
|
|
* to be finished, passing %NULL for @error to ignore it is
|
|
* reasonable.
|
|
*
|
|
* Returns: %TRUE if all image data written so far was successfully
|
|
passed out via the update_area signal
|
|
**/
|
|
gboolean
|
|
gdk_pixbuf_loader_close (GdkPixbufLoader *loader,
|
|
GError **error)
|
|
{
|
|
GdkPixbufLoaderPrivate *priv;
|
|
gboolean retval = TRUE;
|
|
|
|
g_return_val_if_fail (loader != NULL, TRUE);
|
|
g_return_val_if_fail (GDK_IS_PIXBUF_LOADER (loader), TRUE);
|
|
g_return_val_if_fail (error == NULL || *error == NULL, TRUE);
|
|
|
|
priv = loader->priv;
|
|
|
|
/* we expect it's not closed */
|
|
g_return_val_if_fail (priv->closed == FALSE, TRUE);
|
|
|
|
/* We have less the 128 bytes in the image. Flush it, and keep going. */
|
|
if (priv->image_module == NULL)
|
|
{
|
|
GError *tmp = NULL;
|
|
gdk_pixbuf_loader_load_module (loader, NULL, &tmp);
|
|
if (tmp != NULL)
|
|
{
|
|
g_propagate_error (error, tmp);
|
|
retval = FALSE;
|
|
}
|
|
}
|
|
|
|
if (priv->image_module && priv->image_module->stop_load && priv->context)
|
|
{
|
|
if (!priv->image_module->stop_load (priv->context, error))
|
|
retval = FALSE;
|
|
}
|
|
|
|
priv->closed = TRUE;
|
|
if (priv->image_module && priv->holds_threadlock) {
|
|
_gdk_pixbuf_unlock (priv->image_module);
|
|
priv->holds_threadlock = FALSE;
|
|
}
|
|
|
|
if (priv->needs_scale)
|
|
{
|
|
GdkPixbuf *tmp, *pixbuf;
|
|
|
|
tmp = gdk_pixbuf_animation_get_static_image (priv->animation);
|
|
g_object_ref (tmp);
|
|
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, tmp->has_alpha, 8, priv->width, priv->height);
|
|
g_object_unref (priv->animation);
|
|
priv->animation = gdk_pixbuf_non_anim_new (pixbuf);
|
|
g_object_unref (pixbuf);
|
|
g_signal_emit (loader, pixbuf_loader_signals[AREA_PREPARED], 0);
|
|
gdk_pixbuf_scale (tmp, pixbuf, 0, 0, priv->width, priv->height, 0, 0,
|
|
(double) priv->width / tmp->width,
|
|
(double) priv->height / tmp->height,
|
|
GDK_INTERP_BILINEAR);
|
|
g_object_unref (tmp);
|
|
|
|
g_signal_emit (loader, pixbuf_loader_signals[AREA_UPDATED], 0,
|
|
0, 0, priv->width, priv->height);
|
|
}
|
|
|
|
|
|
g_signal_emit (loader, pixbuf_loader_signals[CLOSED], 0);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* gdk_pixbuf_loader_get_format:
|
|
* @loader: A pixbuf loader.
|
|
*
|
|
* Obtains the available information about the format of the
|
|
* currently loading image file.
|
|
*
|
|
* Returns: A #GdkPixbufFormat or %NULL. The return value is owned
|
|
* by GdkPixbuf and should not be freed.
|
|
*
|
|
* Since: 2.2
|
|
*/
|
|
GdkPixbufFormat *
|
|
gdk_pixbuf_loader_get_format (GdkPixbufLoader *loader)
|
|
{
|
|
GdkPixbufLoaderPrivate *priv;
|
|
|
|
g_return_val_if_fail (loader != NULL, NULL);
|
|
g_return_val_if_fail (GDK_IS_PIXBUF_LOADER (loader), NULL);
|
|
|
|
priv = loader->priv;
|
|
|
|
if (priv->image_module)
|
|
return _gdk_pixbuf_get_format (priv->image_module);
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
|
|
#define __GDK_PIXBUF_LOADER_C__
|
|
#include "gdk-pixbuf-aliasdef.c"
|
|
|