1/* GdkPixbuf library - Progressive loader object
2 *
3 * Copyright (C) 1999 The Free Software Foundation
4 *
5 * Authors: Mark Crichton <crichton@gimp.org>
6 * Miguel de Icaza <miguel@gnu.org>
7 * Federico Mena-Quintero <federico@gimp.org>
8 * Jonathan Blandford <jrb@redhat.com>
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
22 */
23
24#ifndef GDK_PIXBUF_LOADER_H
25#define GDK_PIXBUF_LOADER_H
26
27#if defined(GDK_PIXBUF_DISABLE_SINGLE_INCLUDES) && !defined (GDK_PIXBUF_H_INSIDE) && !defined (GDK_PIXBUF_COMPILATION)
28#error "Only <gdk-pixbuf/gdk-pixbuf.h> can be included directly."
29#endif
30
31#include <glib.h>
32#include <glib-object.h>
33#include <gdk-pixbuf/gdk-pixbuf-core.h>
34#include <gdk-pixbuf/gdk-pixbuf-animation.h>
35#include <gdk-pixbuf/gdk-pixbuf-io.h>
36
37G_BEGIN_DECLS
38
39#define GDK_TYPE_PIXBUF_LOADER (gdk_pixbuf_loader_get_type ())
40#define GDK_PIXBUF_LOADER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GDK_TYPE_PIXBUF_LOADER, GdkPixbufLoader))
41#define GDK_PIXBUF_LOADER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_LOADER, GdkPixbufLoaderClass))
42#define GDK_IS_PIXBUF_LOADER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GDK_TYPE_PIXBUF_LOADER))
43#define GDK_IS_PIXBUF_LOADER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_LOADER))
44#define GDK_PIXBUF_LOADER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_LOADER, GdkPixbufLoaderClass))
45
46/**
47 * GdkPixbufLoader:
48 *
49 * The GdkPixbufLoader struct contains only private
50 * fields.
51 */
52typedef struct _GdkPixbufLoader GdkPixbufLoader;
53struct _GdkPixbufLoader
54{
55 GObject parent_instance;
56
57 /*< private >*/
58 gpointer priv;
59};
60
61typedef struct _GdkPixbufLoaderClass GdkPixbufLoaderClass;
62struct _GdkPixbufLoaderClass
63{
64 GObjectClass parent_class;
65
66 void (*size_prepared) (GdkPixbufLoader *loader,
67 int width,
68 int height);
69
70 void (*area_prepared) (GdkPixbufLoader *loader);
71
72 /* Last known frame needs a redraw for x, y, width, height */
73 void (*area_updated) (GdkPixbufLoader *loader,
74 int x,
75 int y,
76 int width,
77 int height);
78
79 void (*closed) (GdkPixbufLoader *loader);
80};
81
82GDK_PIXBUF_AVAILABLE_IN_ALL
83GType gdk_pixbuf_loader_get_type (void) G_GNUC_CONST;
84GDK_PIXBUF_AVAILABLE_IN_ALL
85GdkPixbufLoader * gdk_pixbuf_loader_new (void);
86GDK_PIXBUF_AVAILABLE_IN_ALL
87GdkPixbufLoader * gdk_pixbuf_loader_new_with_type (const char *image_type,
88 GError **error);
89GDK_PIXBUF_AVAILABLE_IN_2_4
90GdkPixbufLoader * gdk_pixbuf_loader_new_with_mime_type (const char *mime_type,
91 GError **error);
92GDK_PIXBUF_AVAILABLE_IN_2_2
93void gdk_pixbuf_loader_set_size (GdkPixbufLoader *loader,
94 int width,
95 int height);
96GDK_PIXBUF_AVAILABLE_IN_ALL
97gboolean gdk_pixbuf_loader_write (GdkPixbufLoader *loader,
98 const guchar *buf,
99 gsize count,
100 GError **error);
101GDK_PIXBUF_AVAILABLE_IN_2_30
102gboolean gdk_pixbuf_loader_write_bytes (GdkPixbufLoader *loader,
103 GBytes *buffer,
104 GError **error);
105GDK_PIXBUF_AVAILABLE_IN_ALL
106GdkPixbuf * gdk_pixbuf_loader_get_pixbuf (GdkPixbufLoader *loader);
107GDK_PIXBUF_AVAILABLE_IN_ALL
108GdkPixbufAnimation * gdk_pixbuf_loader_get_animation (GdkPixbufLoader *loader);
109GDK_PIXBUF_AVAILABLE_IN_ALL
110gboolean gdk_pixbuf_loader_close (GdkPixbufLoader *loader,
111 GError **error);
112GDK_PIXBUF_AVAILABLE_IN_2_2
113GdkPixbufFormat *gdk_pixbuf_loader_get_format (GdkPixbufLoader *loader);
114
115G_END_DECLS
116
117#endif
118
119
120