gtk/gdk-pixbuf/gdk-pixbuf-private.h
Sven Neumann 40c2926482 gdk-pixbuf/gdk-pixbuf-io.c gdk-pixbuf/gdk-pixbuf-private.h
2001-10-05  Sven Neumann  <sven@gimp.org>

	* gdk-pixbuf/gdk-pixbuf-io.c
	* gdk-pixbuf/gdk-pixbuf-private.h
	* gdk-pixbuf/gdk-pixbuf.c
	* gdk-pixbuf/gdk-pixbuf.h
	* gdk-pixbuf/io-jpeg.c
	* gdk-pixbuf/io-png.c: changed GDK_PIXBUF_ERROR_BAD_OPTION_VALUE to
	GDK_PIXBUF_ERROR_BAD_OPTION to we can use it for bad keys too. Added
	new public API gdk_pixbuf_get_option() to retrieve key/value pairs
	set by an image loader. Added support for saving and reading PNG tEXt
	chunks in PNG images.

	* demos/testpixbuf-save.c
	* demos/testpixbuf-scale.c: simple tests for the new PNG tEXt chunk
	feature.

	* gdk-pixbuf/tmpl/gdk-pixbuf.sgml: adapt to changes in GDK_PIXBUF_ERROR
	enum.
2001-10-05 18:51:47 +00:00

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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
/* GdkPixbuf library - Private declarations
*
* Copyright (C) 1999 The Free Software Foundation
*
* Authors: Mark Crichton <crichton@gimp.org>
* Miguel de Icaza <miguel@gnu.org>
* Federico Mena-Quintero <federico@gimp.org>
* Havoc Pennington <hp@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef GDK_PIXBUF_PRIVATE_H
#define GDK_PIXBUF_PRIVATE_H
#include "gdk-pixbuf.h"
typedef struct _GdkPixbufClass GdkPixbufClass;
#define GDK_PIXBUF_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF, GdkPixbufClass))
#define GDK_IS_PIXBUF_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF))
#define GDK_PIXBUF_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF, GdkPixbufClass))
/* Private part of the GdkPixbuf structure */
struct _GdkPixbuf {
GObject parent_instance;
/* Color space */
GdkColorspace colorspace;
/* Number of channels, alpha included */
int n_channels;
/* Bits per channel */
int bits_per_sample;
/* Size */
int width, height;
/* Offset between rows */
int rowstride;
/* The pixel array */
guchar *pixels;
/* Destroy notification function; it is supposed to free the pixel array */
GdkPixbufDestroyNotify destroy_fn;
/* User data for the destroy notification function */
gpointer destroy_fn_data;
/* Do we have an alpha channel? */
guint has_alpha : 1;
};
struct _GdkPixbufClass {
GObjectClass parent_class;
};
typedef struct _GdkPixbufAnimationClass GdkPixbufAnimationClass;
#define GDK_PIXBUF_ANIMATION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_ANIMATION, GdkPixbufAnimationClass))
#define GDK_IS_PIXBUF_ANIMATION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_ANIMATION))
#define GDK_PIXBUF_ANIMATION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_ANIMATION, GdkPixbufAnimationClass))
/* Private part of the GdkPixbufAnimation structure */
struct _GdkPixbufAnimation {
GObject parent_instance;
};
struct _GdkPixbufAnimationClass {
GObjectClass parent_class;
gboolean (*is_static_image) (GdkPixbufAnimation *anim);
GdkPixbuf* (*get_static_image) (GdkPixbufAnimation *anim);
void (*get_size) (GdkPixbufAnimation *anim,
int *width,
int *height);
GdkPixbufAnimationIter* (*get_iter) (GdkPixbufAnimation *anim,
const GTimeVal *start_time);
};
typedef struct _GdkPixbufAnimationIterClass GdkPixbufAnimationIterClass;
#define GDK_PIXBUF_ANIMATION_ITER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_ANIMATION_ITER, GdkPixbufAnimationIterClass))
#define GDK_IS_PIXBUF_ANIMATION_ITER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_ANIMATION_ITER))
#define GDK_PIXBUF_ANIMATION_ITER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_ANIMATION_ITER, GdkPixbufAnimationIterClass))
struct _GdkPixbufAnimationIter {
GObject parent_instance;
};
struct _GdkPixbufAnimationIterClass {
GObjectClass parent_class;
int (*get_delay_time) (GdkPixbufAnimationIter *iter);
GdkPixbuf* (*get_pixbuf) (GdkPixbufAnimationIter *iter);
gboolean (*on_currently_loading_frame) (GdkPixbufAnimationIter *iter);
gboolean (*advance) (GdkPixbufAnimationIter *iter,
const GTimeVal *current_time);
};
GdkPixbufAnimation* gdk_pixbuf_non_anim_new (GdkPixbuf *pixbuf);
/* key/value pairs that can be attached by the pixbuf loader */
gboolean gdk_pixbuf_set_option (GdkPixbuf *pixbuf,
const gchar *key,
const gchar *value);
#endif