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40c2926482
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.
144 lines
4.7 KiB
C
144 lines
4.7 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
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/* GdkPixbuf library - Private declarations
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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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* 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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#ifndef GDK_PIXBUF_PRIVATE_H
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#define GDK_PIXBUF_PRIVATE_H
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#include "gdk-pixbuf.h"
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typedef struct _GdkPixbufClass GdkPixbufClass;
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#define GDK_PIXBUF_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF, GdkPixbufClass))
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#define GDK_IS_PIXBUF_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF))
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#define GDK_PIXBUF_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF, GdkPixbufClass))
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/* Private part of the GdkPixbuf structure */
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struct _GdkPixbuf {
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GObject parent_instance;
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/* Color space */
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GdkColorspace colorspace;
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/* Number of channels, alpha included */
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int n_channels;
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/* Bits per channel */
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int bits_per_sample;
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/* Size */
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int width, height;
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/* Offset between rows */
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int rowstride;
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/* The pixel array */
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guchar *pixels;
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/* Destroy notification function; it is supposed to free the pixel array */
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GdkPixbufDestroyNotify destroy_fn;
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/* User data for the destroy notification function */
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gpointer destroy_fn_data;
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/* Do we have an alpha channel? */
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guint has_alpha : 1;
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};
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struct _GdkPixbufClass {
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GObjectClass parent_class;
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};
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typedef struct _GdkPixbufAnimationClass GdkPixbufAnimationClass;
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#define GDK_PIXBUF_ANIMATION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_ANIMATION, GdkPixbufAnimationClass))
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#define GDK_IS_PIXBUF_ANIMATION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_ANIMATION))
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#define GDK_PIXBUF_ANIMATION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_ANIMATION, GdkPixbufAnimationClass))
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/* Private part of the GdkPixbufAnimation structure */
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struct _GdkPixbufAnimation {
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GObject parent_instance;
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};
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struct _GdkPixbufAnimationClass {
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GObjectClass parent_class;
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gboolean (*is_static_image) (GdkPixbufAnimation *anim);
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GdkPixbuf* (*get_static_image) (GdkPixbufAnimation *anim);
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void (*get_size) (GdkPixbufAnimation *anim,
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int *width,
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int *height);
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GdkPixbufAnimationIter* (*get_iter) (GdkPixbufAnimation *anim,
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const GTimeVal *start_time);
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};
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typedef struct _GdkPixbufAnimationIterClass GdkPixbufAnimationIterClass;
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#define GDK_PIXBUF_ANIMATION_ITER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_ANIMATION_ITER, GdkPixbufAnimationIterClass))
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#define GDK_IS_PIXBUF_ANIMATION_ITER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_ANIMATION_ITER))
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#define GDK_PIXBUF_ANIMATION_ITER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_ANIMATION_ITER, GdkPixbufAnimationIterClass))
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struct _GdkPixbufAnimationIter {
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GObject parent_instance;
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};
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struct _GdkPixbufAnimationIterClass {
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GObjectClass parent_class;
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int (*get_delay_time) (GdkPixbufAnimationIter *iter);
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GdkPixbuf* (*get_pixbuf) (GdkPixbufAnimationIter *iter);
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gboolean (*on_currently_loading_frame) (GdkPixbufAnimationIter *iter);
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gboolean (*advance) (GdkPixbufAnimationIter *iter,
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const GTimeVal *current_time);
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};
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GdkPixbufAnimation* gdk_pixbuf_non_anim_new (GdkPixbuf *pixbuf);
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/* key/value pairs that can be attached by the pixbuf loader */
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gboolean gdk_pixbuf_set_option (GdkPixbuf *pixbuf,
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const gchar *key,
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const gchar *value);
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#endif
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