forked from AuroraMiddleware/gtk
37ac7d593e
Your eyes are bloodshot. Your mouth starts to foam. Your hands are shaking. You know your need your fix. NEED MORE ABSTRACTION! 2000-04-12 Federico Mena Quintero <federico@helixcode.com> This comes from an excellent idea by Tim Janik (timj@gtk.org) to hook to the last unref operation. * gdk-pixbuf/gdk-pixbuf.c (gdk_pixbuf_set_last_unref_handler): New function to set the last unref handler for a pixbuf. (gdk_pixbuf_finalize): New function to actually finalize a pixbuf. It calls the pixbuf's destroy notification function and frees the GdkPixbuf structure itself. (gdk_pixbuf_unref): Use the last unref function of the pixbuf if available. * gdk-pixbuf/gdk-pixbuf-private.h (struct _GdkPixbuf): New fields for the last unref handler and its user data. * gdk-pixbuf/gdk-pixbuf-data.c (gdk_pixbuf_new_from_data): Use g_new0() to allocate the pixbuf. * gdk-pixbuf/gdk-pixbuf-loader.c (gdk_pixbuf_loader_class_init): Fixed the call to gtk_signal_new() for the "frame_done" signal; it was not specifying the `frame' argument. * gdk-pixbuf/gdk-pixbuf-animation.c (gdk_pixbuf_animation_get_width): Fixed docstring. (gdk_pixbuf_animation_get_height): Likewise. (gdk_pixbuf_animation_get_num_frames): Likewise. (gdk_pixbuf_animation_get_frames): Likewise. * doc/gdk-pixbuf-sections.txt: Updated with the new functions and types. * doc/tmpl/gdk-pixbuf.sgml: Added the description for GdkColorspace. * doc/tmpl/scaling.sgml: Added the description for GdkInterpType. * doc/tmpl/refcounting.sgml: Updated with the information about the last unref handler. * doc/tmpl/*.sgml: Markup tweaks. * gdk-pixbuf/Makefile.am (libgnomecanvaspixbuf_la_LDFLAGS): Sigh, update the libtool version number for libgnomecanvaspixbuf as well. (libpixbufloader_*_la_LDFLAGS): The loaders need to be versioned as well, or the old ones won't work with the new stuff. Also, renamed the modules as follows. * gdk-pixbuf/gdk-pixbuf-io.c (gdk_pixbuf_load_module): Now the modules are called "libpixbufloader-<format>.so" instead of "libpixbuf-<format>.so". They needed renaming so that the new loaders won't overwrite the old ones; even with the versioning stuff, the new .so symlink to the .so.1.0.0 would overwrite the old real .so file.
267 lines
8.4 KiB
C
267 lines
8.4 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>
|
||
* Havoc Pennington <hp@redhat.com>
|
||
*
|
||
* 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 <gdk/gdk.h>
|
||
|
||
#ifdef __cplusplus
|
||
extern "C" {
|
||
#endif
|
||
|
||
#include <gdk-pixbuf/gdk-pixbuf-features.h>
|
||
|
||
|
||
|
||
/* Color spaces; right now only RGB is supported */
|
||
typedef enum {
|
||
GDK_COLORSPACE_RGB
|
||
} GdkColorspace;
|
||
|
||
/* All of these are opaque structures */
|
||
typedef struct _GdkPixbuf GdkPixbuf;
|
||
typedef struct _GdkPixbufFrame GdkPixbufFrame;
|
||
typedef struct _GdkPixbufAnimation GdkPixbufAnimation;
|
||
|
||
/* Handler that must free the pixel array */
|
||
typedef void (* GdkPixbufDestroyNotify) (guchar *pixels, gpointer data);
|
||
|
||
/* Handler for the last unref operation */
|
||
typedef void (* GdkPixbufLastUnref) (GdkPixbuf *pixbuf, gpointer data);
|
||
|
||
|
||
|
||
/* Reference counting */
|
||
|
||
GdkPixbuf *gdk_pixbuf_ref (GdkPixbuf *pixbuf);
|
||
void gdk_pixbuf_unref (GdkPixbuf *pixbuf);
|
||
|
||
void gdk_pixbuf_set_last_unref_handler (GdkPixbuf *pixbuf,
|
||
GdkPixbufLastUnref last_unref_fn,
|
||
gpointer last_unref_fn_data);
|
||
|
||
void gdk_pixbuf_finalize (GdkPixbuf *pixbuf);
|
||
|
||
/* GdkPixbuf accessors */
|
||
|
||
GdkColorspace gdk_pixbuf_get_colorspace (const GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_n_channels (const GdkPixbuf *pixbuf);
|
||
gboolean gdk_pixbuf_get_has_alpha (const GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_bits_per_sample (const GdkPixbuf *pixbuf);
|
||
guchar *gdk_pixbuf_get_pixels (const GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_width (const GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_height (const GdkPixbuf *pixbuf);
|
||
int gdk_pixbuf_get_rowstride (const GdkPixbuf *pixbuf);
|
||
|
||
|
||
|
||
/* Create a blank pixbuf with an optimal rowstride and a new buffer */
|
||
GdkPixbuf *gdk_pixbuf_new (GdkColorspace colorspace, gboolean has_alpha, int bits_per_sample,
|
||
int width, int height);
|
||
|
||
/* Copy a pixbuf */
|
||
|
||
GdkPixbuf *gdk_pixbuf_copy (const GdkPixbuf *pixbuf);
|
||
|
||
/* Simple loading */
|
||
|
||
GdkPixbuf *gdk_pixbuf_new_from_file (const char *filename);
|
||
|
||
GdkPixbuf *gdk_pixbuf_new_from_data (const guchar *data,
|
||
GdkColorspace colorspace,
|
||
gboolean has_alpha,
|
||
int bits_per_sample,
|
||
int width, int height,
|
||
int rowstride,
|
||
GdkPixbufDestroyNotify destroy_fn,
|
||
gpointer destroy_fn_data);
|
||
|
||
GdkPixbuf *gdk_pixbuf_new_from_xpm_data (const char **data);
|
||
|
||
/* Adding an alpha channel */
|
||
GdkPixbuf *gdk_pixbuf_add_alpha (const GdkPixbuf *pixbuf, gboolean substitute_color,
|
||
guchar r, guchar g, guchar b);
|
||
|
||
/* Copy an area of a pixbuf onto another one */
|
||
void gdk_pixbuf_copy_area (const GdkPixbuf *src_pixbuf,
|
||
int src_x, int src_y,
|
||
int width, int height,
|
||
GdkPixbuf *dest_pixbuf,
|
||
int dest_x, int dest_y);
|
||
|
||
|
||
|
||
/* 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);
|
||
|
||
|
||
|
||
/* Scaling */
|
||
|
||
/* Interpolation modes */
|
||
typedef enum {
|
||
GDK_INTERP_NEAREST,
|
||
GDK_INTERP_TILES,
|
||
GDK_INTERP_BILINEAR,
|
||
GDK_INTERP_HYPER
|
||
} GdkInterpType;
|
||
|
||
void gdk_pixbuf_scale (const 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,
|
||
GdkInterpType interp_type);
|
||
void gdk_pixbuf_composite (const 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,
|
||
GdkInterpType interp_type,
|
||
int overall_alpha);
|
||
void gdk_pixbuf_composite_color (const 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,
|
||
GdkInterpType interp_type,
|
||
int overall_alpha,
|
||
int check_x,
|
||
int check_y,
|
||
int check_size,
|
||
guint32 color1,
|
||
guint32 color2);
|
||
|
||
GdkPixbuf *gdk_pixbuf_scale_simple (const GdkPixbuf *src,
|
||
int dest_width,
|
||
int dest_height,
|
||
GdkInterpType interp_type);
|
||
|
||
GdkPixbuf *gdk_pixbuf_composite_color_simple (const GdkPixbuf *src,
|
||
int dest_width,
|
||
int dest_height,
|
||
GdkInterpType interp_type,
|
||
int overall_alpha,
|
||
int check_size,
|
||
guint32 color1,
|
||
guint32 color2);
|
||
|
||
|
||
|
||
/* Animation support */
|
||
|
||
/* GIF-like animation overlay modes for frames */
|
||
typedef enum {
|
||
GDK_PIXBUF_FRAME_RETAIN,
|
||
GDK_PIXBUF_FRAME_DISPOSE,
|
||
GDK_PIXBUF_FRAME_REVERT
|
||
} GdkPixbufFrameAction;
|
||
|
||
GdkPixbufAnimation *gdk_pixbuf_animation_new_from_file (const char *filename);
|
||
|
||
GdkPixbufAnimation *gdk_pixbuf_animation_ref (GdkPixbufAnimation *animation);
|
||
void gdk_pixbuf_animation_unref (GdkPixbufAnimation *animation);
|
||
|
||
int gdk_pixbuf_animation_get_width (GdkPixbufAnimation *animation);
|
||
int gdk_pixbuf_animation_get_height (GdkPixbufAnimation *animation);
|
||
GList *gdk_pixbuf_animation_get_frames (GdkPixbufAnimation *animation);
|
||
int gdk_pixbuf_animation_get_num_frames (GdkPixbufAnimation *animation);
|
||
|
||
/* Frame accessors */
|
||
|
||
GdkPixbuf *gdk_pixbuf_frame_get_pixbuf (GdkPixbufFrame *frame);
|
||
int gdk_pixbuf_frame_get_x_offset (GdkPixbufFrame *frame);
|
||
int gdk_pixbuf_frame_get_y_offset (GdkPixbufFrame *frame);
|
||
int gdk_pixbuf_frame_get_delay_time (GdkPixbufFrame *frame);
|
||
GdkPixbufFrameAction gdk_pixbuf_frame_get_action (GdkPixbufFrame *frame);
|
||
|
||
|
||
/* 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
|