forked from AuroraMiddleware/gtk
780 lines
27 KiB
C
780 lines
27 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
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/* GdkPixbuf library - Simple animation support
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*
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* Copyright (C) 1999 The Free Software Foundation
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*
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* Authors: Jonathan Blandford <jrb@redhat.com>
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* Havoc Pennington <hp@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 <errno.h>
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#include "gdk-pixbuf-private.h"
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#include "gdk-pixbuf-io.h"
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#include "gdk-pixbuf-i18n.h"
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#include "gdk-pixbuf-animation.h"
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typedef struct _GdkPixbufNonAnim GdkPixbufNonAnim;
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typedef struct _GdkPixbufNonAnimClass GdkPixbufNonAnimClass;
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#define GDK_TYPE_PIXBUF_NON_ANIM (gdk_pixbuf_non_anim_get_type ())
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#define GDK_PIXBUF_NON_ANIM(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF_NON_ANIM, GdkPixbufNonAnim))
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#define GDK_IS_PIXBUF_NON_ANIM(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF_NON_ANIM))
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#define GDK_PIXBUF_NON_ANIM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_NON_ANIM, GdkPixbufNonAnimClass))
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#define GDK_IS_PIXBUF_NON_ANIM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_NON_ANIM))
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#define GDK_PIXBUF_NON_ANIM_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_NON_ANIM, GdkPixbufNonAnimClass))
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/* Private part of the GdkPixbufNonAnim structure */
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struct _GdkPixbufNonAnim {
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GdkPixbufAnimation parent_instance;
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GdkPixbuf *pixbuf;
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};
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struct _GdkPixbufNonAnimClass {
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GdkPixbufAnimationClass parent_class;
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};
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static GType gdk_pixbuf_non_anim_get_type (void) G_GNUC_CONST;
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typedef struct _GdkPixbufNonAnimIter GdkPixbufNonAnimIter;
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typedef struct _GdkPixbufNonAnimIterClass GdkPixbufNonAnimIterClass;
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#define GDK_TYPE_PIXBUF_NON_ANIM_ITER (gdk_pixbuf_non_anim_iter_get_type ())
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#define GDK_PIXBUF_NON_ANIM_ITER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF_NON_ANIM_ITER, GdkPixbufNonAnimIter))
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#define GDK_IS_PIXBUF_NON_ANIM_ITER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF_NON_ANIM_ITER))
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#define GDK_PIXBUF_NON_ANIM_ITER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_NON_ANIM_ITER, GdkPixbufNonAnimIterClass))
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#define GDK_IS_PIXBUF_NON_ANIM_ITER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_NON_ANIM_ITER))
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#define GDK_PIXBUF_NON_ANIM_ITER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_NON_ANIM_ITER, GdkPixbufNonAnimIterClass))
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struct _GdkPixbufNonAnimIter {
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GdkPixbufAnimationIter parent_instance;
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GdkPixbufNonAnim *non_anim;
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};
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struct _GdkPixbufNonAnimIterClass {
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GdkPixbufAnimationIterClass parent_class;
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};
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static GType gdk_pixbuf_non_anim_iter_get_type (void) G_GNUC_CONST;
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GType
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gdk_pixbuf_animation_get_type (void)
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{
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static GType object_type = 0;
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if (!object_type) {
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static const GTypeInfo object_info = {
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sizeof (GdkPixbufAnimationClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) NULL,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GdkPixbufAnimation),
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0, /* n_preallocs */
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(GInstanceInitFunc) NULL,
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};
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object_type = g_type_register_static (G_TYPE_OBJECT,
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"GdkPixbufAnimation",
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&object_info, 0);
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}
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return object_type;
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}
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/**
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* gdk_pixbuf_animation_new_from_file:
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* @filename: Name of file to load.
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* @error: return location for error
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*
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* Creates a new animation by loading it from a file. The file format is
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* detected automatically. If the file's format does not support multi-frame
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* images, then an animation with a single frame will be created. Possible errors
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* are in the #GDK_PIXBUF_ERROR and #G_FILE_ERROR domains.
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*
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* Return value: A newly-created animation with a reference count of 1, or %NULL
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* if any of several error conditions ocurred: the file could not be opened,
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* there was no loader for the file's format, there was not enough memory to
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* allocate the image buffer, or the image file contained invalid data.
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**/
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GdkPixbufAnimation *
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gdk_pixbuf_animation_new_from_file (const char *filename,
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GError **error)
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{
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GdkPixbufAnimation *animation;
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int size;
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FILE *f;
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guchar buffer [128];
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GdkPixbufModule *image_module;
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g_return_val_if_fail (filename != NULL, NULL);
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f = fopen (filename, "rb");
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if (!f) {
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g_set_error (error,
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G_FILE_ERROR,
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g_file_error_from_errno (errno),
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_("Failed to open file '%s': %s"),
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filename, g_strerror (errno));
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return NULL;
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}
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size = fread (&buffer, 1, sizeof (buffer), f);
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if (size == 0) {
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g_set_error (error,
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GDK_PIXBUF_ERROR,
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GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
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_("Image file '%s' contains no data"),
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filename);
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fclose (f);
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return NULL;
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}
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image_module = _gdk_pixbuf_get_module (buffer, size, filename, error);
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if (!image_module) {
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fclose (f);
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return NULL;
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}
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if (image_module->module == NULL)
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if (!_gdk_pixbuf_load_module (image_module, error)) {
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fclose (f);
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return NULL;
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}
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if (image_module->load_animation == NULL) {
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GdkPixbuf *pixbuf;
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/* Keep this logic in sync with gdk_pixbuf_new_from_file() */
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fseek (f, 0, SEEK_SET);
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pixbuf = _gdk_pixbuf_generic_image_load (image_module, f, error);
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fclose (f);
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if (pixbuf == NULL && error != NULL && *error == NULL) {
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/* I don't trust these crufty longjmp()'ing image libs
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* to maintain proper error invariants, and I don't
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* want user code to segfault as a result. We need to maintain
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* the invariant that error gets set if NULL is returned.
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*/
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g_warning ("Bug! gdk-pixbuf loader '%s' didn't set an error on failure.",
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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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_("Failed to load image '%s': reason not known, probably a corrupt image file"),
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filename);
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}
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if (pixbuf == NULL)
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return NULL;
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animation = gdk_pixbuf_non_anim_new (pixbuf);
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g_object_unref (pixbuf);
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} else {
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fseek (f, 0, SEEK_SET);
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animation = (* image_module->load_animation) (f, error);
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if (animation == NULL && error != NULL && *error == NULL) {
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/* I don't trust these crufty longjmp()'ing
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* image libs to maintain proper error
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* invariants, and I don't want user code to
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* segfault as a result. We need to maintain
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* the invariant that error gets set if NULL
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* is returned.
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*/
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g_warning ("Bug! gdk-pixbuf loader '%s' didn't set an error on failure.",
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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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_("Failed to load animation '%s': reason not known, probably a corrupt animation file"),
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filename);
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}
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fclose (f);
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}
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return animation;
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}
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/**
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* gdk_pixbuf_animation_ref:
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* @animation: An animation.
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*
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* Adds a reference to an animation.
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*
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* Return value: The same as the @animation argument.
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*
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* Deprecated: Use g_object_ref().
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**/
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GdkPixbufAnimation *
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gdk_pixbuf_animation_ref (GdkPixbufAnimation *animation)
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{
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return (GdkPixbufAnimation*) g_object_ref (animation);
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}
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/**
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* gdk_pixbuf_animation_unref:
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* @animation: An animation.
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*
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* Removes a reference from an animation.
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*
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* Deprecated: Use g_object_unref().
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**/
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void
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gdk_pixbuf_animation_unref (GdkPixbufAnimation *animation)
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{
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g_object_unref (animation);
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}
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/**
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* gdk_pixbuf_animation_is_static_image:
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* @animation: a #GdkPixbufAnimation
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*
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* If you load a file with gdk_pixbuf_animation_new_from_file() and it turns
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* out to be a plain, unanimated image, then this function will return
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* %TRUE. Use gdk_pixbuf_animation_get_static_image() to retrieve
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* the image.
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*
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* Return value: %TRUE if the "animation" was really just an image
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**/
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gboolean
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gdk_pixbuf_animation_is_static_image (GdkPixbufAnimation *animation)
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{
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g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), FALSE);
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return GDK_PIXBUF_ANIMATION_GET_CLASS (animation)->is_static_image (animation);
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}
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/**
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* gdk_pixbuf_animation_get_static_image:
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* @animation: a #GdkPixbufAnimation
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*
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* If an animation is really just a plain image (has only one frame),
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* this function returns that image. If the animation is an animation,
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* this function returns a reasonable thing to display as a static
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* unanimated image, which might be the first frame, or something more
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* sophisticated. If an animation hasn't loaded any frames yet, this
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* function will return %NULL.
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*
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* Return value: unanimated image representing the animation
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**/
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GdkPixbuf*
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gdk_pixbuf_animation_get_static_image (GdkPixbufAnimation *animation)
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{
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g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), NULL);
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return GDK_PIXBUF_ANIMATION_GET_CLASS (animation)->get_static_image (animation);
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}
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/**
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* gdk_pixbuf_animation_get_width:
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* @animation: An animation.
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*
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* Queries the width of the bounding box of a pixbuf animation.
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*
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* Return value: Width of the bounding box of the animation.
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**/
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int
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gdk_pixbuf_animation_get_width (GdkPixbufAnimation *animation)
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{
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int width;
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g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), 0);
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width = 0;
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GDK_PIXBUF_ANIMATION_GET_CLASS (animation)->get_size (animation,
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&width, NULL);
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return width;
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}
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/**
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* gdk_pixbuf_animation_get_height:
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* @animation: An animation.
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*
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* Queries the height of the bounding box of a pixbuf animation.
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*
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* Return value: Height of the bounding box of the animation.
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**/
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int
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gdk_pixbuf_animation_get_height (GdkPixbufAnimation *animation)
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{
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int height;
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g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), 0);
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height = 0;
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GDK_PIXBUF_ANIMATION_GET_CLASS (animation)->get_size (animation,
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NULL, &height);
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return height;
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}
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/**
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* gdk_pixbuf_animation_get_iter:
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* @animation: a #GdkPixbufAnimation
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* @start_time: time when the animation starts playing
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*
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* Get an iterator for displaying an animation. The iterator provides
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* the frames that should be displayed at a given time.
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* It should be freed after use with g_object_unref().
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*
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* @start_time would normally come from g_get_current_time(), and
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* marks the beginning of animation playback. After creating an
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* iterator, you should immediately display the pixbuf returned by
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* gdk_pixbuf_animation_iter_get_pixbuf(). Then, you should install a
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* timeout (with g_timeout_add()) or by some other mechanism ensure
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* that you'll update the image after
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* gdk_pixbuf_animation_iter_get_delay_time() milliseconds. Each time
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* the image is updated, you should reinstall the timeout with the new,
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* possibly-changed delay time.
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*
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* As a shortcut, if @start_time is %NULL, the result of
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* g_get_current_time() will be used automatically.
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*
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* To update the image (i.e. possibly change the result of
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* gdk_pixbuf_animation_iter_get_pixbuf() to a new frame of the animation),
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* call gdk_pixbuf_animation_iter_advance().
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*
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* If you're using #GdkPixbufLoader, in addition to updating the image
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* after the delay time, you should also update it whenever you
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* receive the area_updated signal and
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* gdk_pixbuf_animation_iter_on_currently_loading_frame() returns
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* %TRUE. In this case, the frame currently being fed into the loader
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* has received new data, so needs to be refreshed. The delay time for
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* a frame may also be modified after an area_updated signal, for
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* example if the delay time for a frame is encoded in the data after
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* the frame itself. So your timeout should be reinstalled after any
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* area_updated signal.
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*
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* A delay time of -1 is possible, indicating "infinite."
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*
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* Return value: an iterator to move over the animation
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**/
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GdkPixbufAnimationIter*
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gdk_pixbuf_animation_get_iter (GdkPixbufAnimation *animation,
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const GTimeVal *start_time)
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{
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GTimeVal val;
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g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), NULL);
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if (start_time)
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val = *start_time;
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else
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g_get_current_time (&val);
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return GDK_PIXBUF_ANIMATION_GET_CLASS (animation)->get_iter (animation, &val);
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}
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GType
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gdk_pixbuf_animation_iter_get_type (void)
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{
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static GType object_type = 0;
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if (!object_type) {
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static const GTypeInfo object_info = {
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sizeof (GdkPixbufAnimationIterClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) NULL,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GdkPixbufAnimationIter),
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0, /* n_preallocs */
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(GInstanceInitFunc) NULL,
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};
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object_type = g_type_register_static (G_TYPE_OBJECT,
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"GdkPixbufAnimationIter",
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&object_info, 0);
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}
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return object_type;
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}
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/**
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* gdk_pixbuf_animation_iter_get_delay_time:
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* @iter: an animation iterator
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*
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* Gets the number of milliseconds the current pixbuf should be displayed,
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* or -1 if the current pixbuf should be displayed forever. g_timeout_add()
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* conveniently takes a timeout in milliseconds, so you can use a timeout
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* to schedule the next update.
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*
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* Return value: delay time in milliseconds (thousandths of a second)
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**/
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int
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gdk_pixbuf_animation_iter_get_delay_time (GdkPixbufAnimationIter *iter)
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{
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g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION_ITER (iter), -1);
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return GDK_PIXBUF_ANIMATION_ITER_GET_CLASS (iter)->get_delay_time (iter);
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}
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/**
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* gdk_pixbuf_animation_iter_get_pixbuf:
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* @iter: an animation iterator
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*
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* Gets the current pixbuf which should be displayed; the pixbuf will
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* be the same size as the animation itself
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* (gdk_pixbuf_animation_get_width(),
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* gdk_pixbuf_animation_get_height()). This pixbuf should be displayed
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* for gdk_pixbuf_animation_get_delay_time() milliseconds. The caller
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* of this function does not own a reference to the returned pixbuf;
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* the returned pixbuf will become invalid when the iterator advances
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* to the next frame, which may happen anytime you call
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* gdk_pixbuf_animation_iter_advance(). Copy the pixbuf to keep it
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* (don't just add a reference), as it may get recycled as you advance
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* the iterator.
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*
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* Return value: the pixbuf to be displayed
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**/
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GdkPixbuf*
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gdk_pixbuf_animation_iter_get_pixbuf (GdkPixbufAnimationIter *iter)
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{
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g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION_ITER (iter), NULL);
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return GDK_PIXBUF_ANIMATION_ITER_GET_CLASS (iter)->get_pixbuf (iter);
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}
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/**
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* gdk_pixbuf_animation_iter_on_currently_loading_frame:
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* @iter: a #GdkPixbufAnimationIter
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*
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* Used to determine how to respond to the area_updated signal on
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* #GdkPixbufLoader when loading an animation. area_updated is emitted
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* for an area of the frame currently streaming in to the loader. So if
|
||
* you're on the currently loading frame, you need to redraw the screen for
|
||
* the updated area.
|
||
*
|
||
* Return value: %TRUE if the frame we're on is partially loaded, or the last frame
|
||
**/
|
||
gboolean
|
||
gdk_pixbuf_animation_iter_on_currently_loading_frame (GdkPixbufAnimationIter *iter)
|
||
{
|
||
g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION_ITER (iter), FALSE);
|
||
|
||
return GDK_PIXBUF_ANIMATION_ITER_GET_CLASS (iter)->on_currently_loading_frame (iter);
|
||
}
|
||
|
||
/**
|
||
* gdk_pixbuf_animation_iter_advance:
|
||
* @iter: a #GdkPixbufAnimationIter
|
||
* @current_time: current time
|
||
*
|
||
* Possibly advances an animation to a new frame. Chooses the frame based
|
||
* on the start time passed to gdk_pixbuf_animation_get_iter().
|
||
*
|
||
* @current_time would normally come from g_get_current_time(), and
|
||
* must be greater than or equal to the time passed to
|
||
* gdk_pixbuf_animation_get_iter(), and must increase or remain
|
||
* unchanged each time gdk_pixbuf_animation_iter_get_pixbuf() is
|
||
* called. That is, you can't go backward in time; animations only
|
||
* play forward.
|
||
*
|
||
* As a shortcut, pass %NULL for the current time and g_get_current_time()
|
||
* will be invoked on your behalf. So you only need to explicitly pass
|
||
* @current_time if you're doing something odd like playing the animation
|
||
* at double speed.
|
||
*
|
||
* If this function returns %FALSE, there's no need to update the animation
|
||
* display, assuming the display had been rendered prior to advancing;
|
||
* if %TRUE, you need to call gdk_animation_iter_get_pixbuf() and update the
|
||
* display with the new pixbuf.
|
||
*
|
||
* Returns: %TRUE if the image may need updating
|
||
*
|
||
**/
|
||
gboolean
|
||
gdk_pixbuf_animation_iter_advance (GdkPixbufAnimationIter *iter,
|
||
const GTimeVal *current_time)
|
||
{
|
||
GTimeVal val;
|
||
|
||
g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION_ITER (iter), FALSE);
|
||
|
||
if (current_time)
|
||
val = *current_time;
|
||
else
|
||
g_get_current_time (&val);
|
||
|
||
return GDK_PIXBUF_ANIMATION_ITER_GET_CLASS (iter)->advance (iter, &val);
|
||
}
|
||
|
||
|
||
|
||
static void gdk_pixbuf_non_anim_class_init (GdkPixbufNonAnimClass *klass);
|
||
static void gdk_pixbuf_non_anim_finalize (GObject *object);
|
||
|
||
static gboolean gdk_pixbuf_non_anim_is_static_image (GdkPixbufAnimation *animation);
|
||
static GdkPixbuf* gdk_pixbuf_non_anim_get_static_image (GdkPixbufAnimation *animation);
|
||
static void gdk_pixbuf_non_anim_get_size (GdkPixbufAnimation *anim,
|
||
int *width,
|
||
int *height);
|
||
static GdkPixbufAnimationIter* gdk_pixbuf_non_anim_get_iter (GdkPixbufAnimation *anim,
|
||
const GTimeVal *start_time);
|
||
|
||
|
||
|
||
|
||
|
||
static gpointer non_parent_class;
|
||
|
||
GType
|
||
gdk_pixbuf_non_anim_get_type (void)
|
||
{
|
||
static GType object_type = 0;
|
||
|
||
if (!object_type) {
|
||
static const GTypeInfo object_info = {
|
||
sizeof (GdkPixbufNonAnimClass),
|
||
(GBaseInitFunc) NULL,
|
||
(GBaseFinalizeFunc) NULL,
|
||
(GClassInitFunc) gdk_pixbuf_non_anim_class_init,
|
||
NULL, /* class_finalize */
|
||
NULL, /* class_data */
|
||
sizeof (GdkPixbufNonAnim),
|
||
0, /* n_preallocs */
|
||
(GInstanceInitFunc) NULL,
|
||
};
|
||
|
||
object_type = g_type_register_static (GDK_TYPE_PIXBUF_ANIMATION,
|
||
"GdkPixbufNonAnim",
|
||
&object_info, 0);
|
||
}
|
||
|
||
return object_type;
|
||
}
|
||
|
||
static void
|
||
gdk_pixbuf_non_anim_class_init (GdkPixbufNonAnimClass *klass)
|
||
{
|
||
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||
GdkPixbufAnimationClass *anim_class = GDK_PIXBUF_ANIMATION_CLASS (klass);
|
||
|
||
non_parent_class = g_type_class_peek_parent (klass);
|
||
|
||
object_class->finalize = gdk_pixbuf_non_anim_finalize;
|
||
|
||
anim_class->is_static_image = gdk_pixbuf_non_anim_is_static_image;
|
||
anim_class->get_static_image = gdk_pixbuf_non_anim_get_static_image;
|
||
anim_class->get_size = gdk_pixbuf_non_anim_get_size;
|
||
anim_class->get_iter = gdk_pixbuf_non_anim_get_iter;
|
||
}
|
||
|
||
static void
|
||
gdk_pixbuf_non_anim_finalize (GObject *object)
|
||
{
|
||
GdkPixbufNonAnim *non_anim = GDK_PIXBUF_NON_ANIM (object);
|
||
|
||
if (non_anim->pixbuf)
|
||
g_object_unref (non_anim->pixbuf);
|
||
|
||
G_OBJECT_CLASS (non_parent_class)->finalize (object);
|
||
}
|
||
|
||
GdkPixbufAnimation*
|
||
gdk_pixbuf_non_anim_new (GdkPixbuf *pixbuf)
|
||
{
|
||
GdkPixbufNonAnim *non_anim;
|
||
|
||
non_anim = g_object_new (GDK_TYPE_PIXBUF_NON_ANIM, NULL);
|
||
|
||
non_anim->pixbuf = pixbuf;
|
||
|
||
if (pixbuf)
|
||
g_object_ref (pixbuf);
|
||
|
||
return GDK_PIXBUF_ANIMATION (non_anim);
|
||
}
|
||
|
||
static gboolean
|
||
gdk_pixbuf_non_anim_is_static_image (GdkPixbufAnimation *animation)
|
||
{
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static GdkPixbuf*
|
||
gdk_pixbuf_non_anim_get_static_image (GdkPixbufAnimation *animation)
|
||
{
|
||
GdkPixbufNonAnim *non_anim;
|
||
|
||
non_anim = GDK_PIXBUF_NON_ANIM (animation);
|
||
|
||
return non_anim->pixbuf;
|
||
}
|
||
|
||
static void
|
||
gdk_pixbuf_non_anim_get_size (GdkPixbufAnimation *anim,
|
||
int *width,
|
||
int *height)
|
||
{
|
||
GdkPixbufNonAnim *non_anim;
|
||
|
||
non_anim = GDK_PIXBUF_NON_ANIM (anim);
|
||
|
||
if (width)
|
||
*width = gdk_pixbuf_get_width (non_anim->pixbuf);
|
||
|
||
if (height)
|
||
*height = gdk_pixbuf_get_height (non_anim->pixbuf);
|
||
}
|
||
|
||
|
||
static GdkPixbufAnimationIter*
|
||
gdk_pixbuf_non_anim_get_iter (GdkPixbufAnimation *anim,
|
||
const GTimeVal *start_time)
|
||
{
|
||
GdkPixbufNonAnimIter *iter;
|
||
|
||
iter = g_object_new (GDK_TYPE_PIXBUF_NON_ANIM_ITER, NULL);
|
||
|
||
iter->non_anim = GDK_PIXBUF_NON_ANIM (anim);
|
||
|
||
g_object_ref (iter->non_anim);
|
||
|
||
return GDK_PIXBUF_ANIMATION_ITER (iter);
|
||
}
|
||
|
||
|
||
|
||
static void gdk_pixbuf_non_anim_iter_class_init (GdkPixbufNonAnimIterClass *klass);
|
||
static void gdk_pixbuf_non_anim_iter_finalize (GObject *object);
|
||
static int gdk_pixbuf_non_anim_iter_get_delay_time (GdkPixbufAnimationIter *iter);
|
||
static GdkPixbuf* gdk_pixbuf_non_anim_iter_get_pixbuf (GdkPixbufAnimationIter *iter);
|
||
static gboolean gdk_pixbuf_non_anim_iter_on_currently_loading_frame (GdkPixbufAnimationIter *iter);
|
||
static gboolean gdk_pixbuf_non_anim_iter_advance (GdkPixbufAnimationIter *iter,
|
||
const GTimeVal *current_time);
|
||
|
||
|
||
|
||
|
||
|
||
static gpointer non_iter_parent_class;
|
||
|
||
GType
|
||
gdk_pixbuf_non_anim_iter_get_type (void)
|
||
{
|
||
static GType object_type = 0;
|
||
|
||
if (!object_type) {
|
||
static const GTypeInfo object_info = {
|
||
sizeof (GdkPixbufNonAnimIterClass),
|
||
(GBaseInitFunc) NULL,
|
||
(GBaseFinalizeFunc) NULL,
|
||
(GClassInitFunc) gdk_pixbuf_non_anim_iter_class_init,
|
||
NULL, /* class_finalize */
|
||
NULL, /* class_data */
|
||
sizeof (GdkPixbufNonAnimIter),
|
||
0, /* n_preallocs */
|
||
(GInstanceInitFunc) NULL,
|
||
};
|
||
|
||
object_type = g_type_register_static (GDK_TYPE_PIXBUF_ANIMATION_ITER,
|
||
"GdkPixbufNonAnimIter",
|
||
&object_info, 0);
|
||
}
|
||
|
||
return object_type;
|
||
}
|
||
|
||
static void
|
||
gdk_pixbuf_non_anim_iter_class_init (GdkPixbufNonAnimIterClass *klass)
|
||
{
|
||
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||
GdkPixbufAnimationIterClass *anim_iter_class =
|
||
GDK_PIXBUF_ANIMATION_ITER_CLASS (klass);
|
||
|
||
non_iter_parent_class = g_type_class_peek_parent (klass);
|
||
|
||
object_class->finalize = gdk_pixbuf_non_anim_iter_finalize;
|
||
|
||
anim_iter_class->get_delay_time = gdk_pixbuf_non_anim_iter_get_delay_time;
|
||
anim_iter_class->get_pixbuf = gdk_pixbuf_non_anim_iter_get_pixbuf;
|
||
anim_iter_class->on_currently_loading_frame = gdk_pixbuf_non_anim_iter_on_currently_loading_frame;
|
||
anim_iter_class->advance = gdk_pixbuf_non_anim_iter_advance;
|
||
}
|
||
|
||
static void
|
||
gdk_pixbuf_non_anim_iter_finalize (GObject *object)
|
||
{
|
||
GdkPixbufNonAnimIter *iter = GDK_PIXBUF_NON_ANIM_ITER (object);
|
||
|
||
g_object_unref (iter->non_anim);
|
||
|
||
G_OBJECT_CLASS (non_iter_parent_class)->finalize (object);
|
||
}
|
||
|
||
static int
|
||
gdk_pixbuf_non_anim_iter_get_delay_time (GdkPixbufAnimationIter *iter)
|
||
{
|
||
return -1; /* show only frame forever */
|
||
}
|
||
|
||
static GdkPixbuf*
|
||
gdk_pixbuf_non_anim_iter_get_pixbuf (GdkPixbufAnimationIter *iter)
|
||
{
|
||
return GDK_PIXBUF_NON_ANIM_ITER (iter)->non_anim->pixbuf;
|
||
}
|
||
|
||
|
||
static gboolean
|
||
gdk_pixbuf_non_anim_iter_on_currently_loading_frame (GdkPixbufAnimationIter *iter)
|
||
{
|
||
return TRUE;
|
||
}
|
||
|
||
static gboolean
|
||
gdk_pixbuf_non_anim_iter_advance (GdkPixbufAnimationIter *iter,
|
||
const GTimeVal *current_time)
|
||
{
|
||
|
||
/* Advancing never requires a refresh */
|
||
return FALSE;
|
||
}
|
||
|