forked from AuroraMiddleware/gtk
bb8a563730
2000-01-21 Federico Mena Quintero <federico@helixcode.com> * gdk-pixbuf/gdk-pixbuf.c (gdk_pixbuf_ref): Return the same pixbuf as the input parameter. * gdk-pixbuf/gdk-pixbuf-animation.c (gdk_pixbuf_animation_ref): Return the same animation as the input parameter.
251 lines
7.3 KiB
C
251 lines
7.3 KiB
C
/* GdkPixbuf library - Main header file
|
||
*
|
||
* 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>
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Library 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
|
||
* Library General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Library 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_H
|
||
#define GDK_PIXBUF_H
|
||
|
||
#include <libart_lgpl/art_misc.h>
|
||
#include <libart_lgpl/art_pixbuf.h>
|
||
#include <libart_lgpl/art_filterlevel.h>
|
||
#include <gdk/gdk.h>
|
||
|
||
#ifdef __cplusplus
|
||
extern "C" {
|
||
#endif
|
||
|
||
#include <gdk-pixbuf/gdk-pixbuf-features.h>
|
||
|
||
/* GdkPixbuf structures */
|
||
typedef struct _GdkPixbuf GdkPixbuf;
|
||
typedef struct _GdkPixbufFrame GdkPixbufFrame;
|
||
typedef struct _GdkPixbufAnimation GdkPixbufAnimation;
|
||
|
||
struct _GdkPixbuf {
|
||
/* Reference count */
|
||
int ref_count;
|
||
|
||
/* Libart pixbuf */
|
||
ArtPixBuf *art_pixbuf;
|
||
};
|
||
|
||
/* GIF-like animation overlay modes for frames */
|
||
typedef enum {
|
||
GDK_PIXBUF_FRAME_RETAIN,
|
||
GDK_PIXBUF_FRAME_DISPOSE,
|
||
GDK_PIXBUF_FRAME_REVERT
|
||
} GdkPixbufFrameAction;
|
||
|
||
struct _GdkPixbufFrame {
|
||
/* The pixbuf with this frame's image data */
|
||
GdkPixbuf *pixbuf;
|
||
|
||
/* Offsets for overlaying onto the animation's area */
|
||
int x_offset;
|
||
int y_offset;
|
||
|
||
/* Frame duration in ms */
|
||
int delay_time;
|
||
|
||
/* Overlay mode */
|
||
GdkPixbufFrameAction action;
|
||
};
|
||
|
||
struct _GdkPixbufAnimation {
|
||
/* Reference count */
|
||
int ref_count;
|
||
|
||
/* Number of frames */
|
||
int n_frames;
|
||
|
||
/* List of GdkPixbufFrame structures */
|
||
GList *frames;
|
||
};
|
||
|
||
|
||
|
||
/* Convenience functions */
|
||
|
||
ArtPixFormat gdk_pixbuf_get_format (GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_n_channels (GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_has_alpha (GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_bits_per_sample (GdkPixbuf *pixbuf);
|
||
guchar *gdk_pixbuf_get_pixels (GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_width (GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_height (GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_rowstride (GdkPixbuf *pixbuf);
|
||
|
||
/* Reference counting */
|
||
|
||
GdkPixbuf *gdk_pixbuf_ref (GdkPixbuf *pixbuf);
|
||
void gdk_pixbuf_unref (GdkPixbuf *pixbuf);
|
||
|
||
/* Wrap a libart pixbuf */
|
||
GdkPixbuf *gdk_pixbuf_new_from_art_pixbuf (ArtPixBuf *art_pixbuf);
|
||
|
||
/* Create a blank pixbuf with an optimal rowstride and a new buffer */
|
||
GdkPixbuf *gdk_pixbuf_new (ArtPixFormat format, gboolean has_alpha, int bits_per_sample,
|
||
int width, int height);
|
||
|
||
/* Simple loading */
|
||
|
||
GdkPixbuf *gdk_pixbuf_new_from_file (const char *filename);
|
||
|
||
GdkPixbuf *gdk_pixbuf_new_from_data (guchar *data,
|
||
ArtPixFormat format,
|
||
gboolean has_alpha,
|
||
int width, int height,
|
||
int rowstride,
|
||
ArtDestroyNotify dfunc,
|
||
gpointer dfunc_data);
|
||
|
||
GdkPixbuf *gdk_pixbuf_new_from_xpm_data (const char **data);
|
||
|
||
/* Adding an alpha channel */
|
||
GdkPixbuf *gdk_pixbuf_add_alpha (GdkPixbuf *pixbuf, gboolean substitute_color,
|
||
guchar r, guchar g, guchar b);
|
||
|
||
/* Rendering to a drawable */
|
||
|
||
/* Alpha compositing mode */
|
||
typedef enum {
|
||
GDK_PIXBUF_ALPHA_BILEVEL,
|
||
GDK_PIXBUF_ALPHA_FULL
|
||
} GdkPixbufAlphaMode;
|
||
|
||
void gdk_pixbuf_render_threshold_alpha (GdkPixbuf *pixbuf, GdkBitmap *bitmap,
|
||
int src_x, int src_y,
|
||
int dest_x, int dest_y,
|
||
int width, int height,
|
||
int alpha_threshold);
|
||
|
||
void gdk_pixbuf_render_to_drawable (GdkPixbuf *pixbuf,
|
||
GdkDrawable *drawable, GdkGC *gc,
|
||
int src_x, int src_y,
|
||
int dest_x, int dest_y,
|
||
int width, int height,
|
||
GdkRgbDither dither,
|
||
int x_dither, int y_dither);
|
||
|
||
void gdk_pixbuf_render_to_drawable_alpha (GdkPixbuf *pixbuf, GdkDrawable *drawable,
|
||
int src_x, int src_y,
|
||
int dest_x, int dest_y,
|
||
int width, int height,
|
||
GdkPixbufAlphaMode alpha_mode,
|
||
int alpha_threshold,
|
||
GdkRgbDither dither,
|
||
int x_dither, int y_dither);
|
||
|
||
void gdk_pixbuf_render_pixmap_and_mask (GdkPixbuf *pixbuf,
|
||
GdkPixmap **pixmap_return, GdkBitmap **mask_return,
|
||
int alpha_threshold);
|
||
|
||
/* Fetching a region from a drawable */
|
||
GdkPixbuf *gdk_pixbuf_get_from_drawable (GdkPixbuf *dest,
|
||
GdkDrawable *src, GdkColormap *cmap,
|
||
int src_x, int src_y,
|
||
int dest_x, int dest_y,
|
||
int width, int height);
|
||
|
||
/* Copy an area of a pixbuf onto another one */
|
||
void gdk_pixbuf_copy_area (GdkPixbuf *src_pixbuf,
|
||
int src_x, int src_y,
|
||
int width, int height,
|
||
GdkPixbuf *dest_pixbuf,
|
||
int dest_x, int dest_y);
|
||
|
||
/* Scaling */
|
||
|
||
void gdk_pixbuf_scale (GdkPixbuf *src,
|
||
GdkPixbuf *dest,
|
||
int dest_x,
|
||
int dest_y,
|
||
int dest_width,
|
||
int dest_height,
|
||
double offset_x,
|
||
double offset_y,
|
||
double scale_x,
|
||
double scale_y,
|
||
ArtFilterLevel filter_level);
|
||
void gdk_pixbuf_composite (GdkPixbuf *src,
|
||
GdkPixbuf *dest,
|
||
int dest_x,
|
||
int dest_y,
|
||
int dest_width,
|
||
int dest_height,
|
||
double offset_x,
|
||
double offset_y,
|
||
double scale_x,
|
||
double scale_y,
|
||
ArtFilterLevel filter_level,
|
||
int overall_alpha);
|
||
void gdk_pixbuf_composite_color (GdkPixbuf *src,
|
||
GdkPixbuf *dest,
|
||
int dest_x,
|
||
int dest_y,
|
||
int dest_width,
|
||
int dest_height,
|
||
double offset_x,
|
||
double offset_y,
|
||
double scale_x,
|
||
double scale_y,
|
||
ArtFilterLevel filter_level,
|
||
int overall_alpha,
|
||
int check_x,
|
||
int check_y,
|
||
int check_size,
|
||
art_u32 color1,
|
||
art_u32 color2);
|
||
|
||
GdkPixbuf *gdk_pixbuf_scale_simple (GdkPixbuf *src,
|
||
int dest_width,
|
||
int dest_height,
|
||
ArtFilterLevel filter_level);
|
||
GdkPixbuf *gdk_pixbuf_composite_color_simple (GdkPixbuf *src,
|
||
int dest_width,
|
||
int dest_height,
|
||
ArtFilterLevel filter_level,
|
||
int overall_alpha,
|
||
int check_size,
|
||
art_u32 color1,
|
||
art_u32 color2);
|
||
|
||
/* Animation support */
|
||
|
||
GdkPixbufAnimation *gdk_pixbuf_animation_new_from_file (const char *filename);
|
||
|
||
GdkPixbufAnimation *gdk_pixbuf_animation_ref (GdkPixbufAnimation *animation);
|
||
void gdk_pixbuf_animation_unref (GdkPixbufAnimation *animation);
|
||
|
||
/* General (presently empty) initialization hooks, primarily for gnome-libs */
|
||
void gdk_pixbuf_preinit(gpointer app, gpointer modinfo);
|
||
void gdk_pixbuf_postinit(gpointer app, gpointer modinfo);
|
||
|
||
|
||
|
||
#ifdef __cplusplus
|
||
}
|
||
#endif
|
||
|
||
#endif
|