forked from AuroraMiddleware/gtk
b9db8ea3ea
2003-07-13 Matthias Clasen <maclas@gmx.de> * gdk-pixbuf.h: * gdk-pixbuf-io.c (gdk_pixbuf_new_from_file_at_size): New function to load an image from a file at a specified size. (#105326, Dom Lachowicz)
313 lines
11 KiB
C
313 lines
11 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 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_H
|
||
#define GDK_PIXBUF_H
|
||
|
||
#include <glib.h>
|
||
#include <gdk-pixbuf/gdk-pixbuf-features.h>
|
||
#include <glib-object.h>
|
||
|
||
G_BEGIN_DECLS
|
||
|
||
|
||
|
||
/* Alpha compositing mode */
|
||
typedef enum
|
||
{
|
||
GDK_PIXBUF_ALPHA_BILEVEL,
|
||
GDK_PIXBUF_ALPHA_FULL
|
||
} GdkPixbufAlphaMode;
|
||
|
||
/* Color spaces; right now only RGB is supported.
|
||
* Note that these values are encoded in inline pixbufs
|
||
* as ints, so don't reorder them
|
||
*/
|
||
typedef enum {
|
||
GDK_COLORSPACE_RGB
|
||
} GdkColorspace;
|
||
|
||
/* All of these are opaque structures */
|
||
typedef struct _GdkPixbuf GdkPixbuf;
|
||
typedef struct _GdkPixbufAnimation GdkPixbufAnimation;
|
||
typedef struct _GdkPixbufAnimationIter GdkPixbufAnimationIter;
|
||
|
||
#define GDK_TYPE_PIXBUF (gdk_pixbuf_get_type ())
|
||
#define GDK_PIXBUF(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF, GdkPixbuf))
|
||
#define GDK_IS_PIXBUF(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF))
|
||
|
||
#define GDK_TYPE_PIXBUF_ANIMATION (gdk_pixbuf_animation_get_type ())
|
||
#define GDK_PIXBUF_ANIMATION(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF_ANIMATION, GdkPixbufAnimation))
|
||
#define GDK_IS_PIXBUF_ANIMATION(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF_ANIMATION))
|
||
|
||
#define GDK_TYPE_PIXBUF_ANIMATION_ITER (gdk_pixbuf_animation_iter_get_type ())
|
||
#define GDK_PIXBUF_ANIMATION_ITER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF_ANIMATION_ITER, GdkPixbufAnimationIter))
|
||
#define GDK_IS_PIXBUF_ANIMATION_ITER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF_ANIMATION_ITER))
|
||
|
||
/* Handler that must free the pixel array */
|
||
typedef void (* GdkPixbufDestroyNotify) (guchar *pixels, gpointer data);
|
||
|
||
#define GDK_PIXBUF_ERROR gdk_pixbuf_error_quark ()
|
||
|
||
typedef enum {
|
||
/* image data hosed */
|
||
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
|
||
/* no mem to load image */
|
||
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
|
||
/* bad option passed to save routine */
|
||
GDK_PIXBUF_ERROR_BAD_OPTION,
|
||
/* unsupported image type (sort of an ENOSYS) */
|
||
GDK_PIXBUF_ERROR_UNKNOWN_TYPE,
|
||
/* unsupported operation (load, save) for image type */
|
||
GDK_PIXBUF_ERROR_UNSUPPORTED_OPERATION,
|
||
GDK_PIXBUF_ERROR_FAILED
|
||
} GdkPixbufError;
|
||
|
||
GQuark gdk_pixbuf_error_quark (void) G_GNUC_CONST;
|
||
|
||
|
||
|
||
GType gdk_pixbuf_get_type (void) G_GNUC_CONST;
|
||
|
||
/* Reference counting */
|
||
|
||
#ifndef GDK_PIXBUF_DISABLE_DEPRECATED
|
||
GdkPixbuf *gdk_pixbuf_ref (GdkPixbuf *pixbuf);
|
||
void gdk_pixbuf_unref (GdkPixbuf *pixbuf);
|
||
#endif
|
||
|
||
/* 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);
|
||
|
||
/* Create a pixbuf which points to the pixels of another pixbuf */
|
||
GdkPixbuf *gdk_pixbuf_new_subpixbuf (GdkPixbuf *src_pixbuf,
|
||
int src_x,
|
||
int src_y,
|
||
int width,
|
||
int height);
|
||
|
||
/* Simple loading */
|
||
|
||
GdkPixbuf *gdk_pixbuf_new_from_file (const char *filename,
|
||
GError **error);
|
||
|
||
GdkPixbuf *gdk_pixbuf_new_from_file_at_size (const char *filename,
|
||
int width,
|
||
int height,
|
||
GError **error);
|
||
|
||
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);
|
||
GdkPixbuf* gdk_pixbuf_new_from_inline (gint data_length,
|
||
const guint8 *data,
|
||
gboolean copy_pixels,
|
||
GError **error);
|
||
|
||
/* Mutations */
|
||
void gdk_pixbuf_fill (GdkPixbuf *pixbuf,
|
||
guint32 pixel);
|
||
|
||
/* Saving */
|
||
|
||
gboolean gdk_pixbuf_save (GdkPixbuf *pixbuf,
|
||
const char *filename,
|
||
const char *type,
|
||
GError **error,
|
||
...);
|
||
|
||
gboolean gdk_pixbuf_savev (GdkPixbuf *pixbuf,
|
||
const char *filename,
|
||
const char *type,
|
||
char **option_keys,
|
||
char **option_values,
|
||
GError **error);
|
||
|
||
/* 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);
|
||
|
||
/* Brighten/darken and optionally make it pixelated-looking */
|
||
void gdk_pixbuf_saturate_and_pixelate (const GdkPixbuf *src,
|
||
GdkPixbuf *dest,
|
||
gfloat saturation,
|
||
gboolean pixelate);
|
||
|
||
|
||
|
||
/* Rendering to a drawable */
|
||
|
||
|
||
/* 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 */
|
||
|
||
GType gdk_pixbuf_animation_get_type (void) G_GNUC_CONST;
|
||
|
||
GdkPixbufAnimation *gdk_pixbuf_animation_new_from_file (const char *filename,
|
||
GError **error);
|
||
|
||
#ifndef GDK_PIXBUF_DISABLE_DEPRECATED
|
||
GdkPixbufAnimation *gdk_pixbuf_animation_ref (GdkPixbufAnimation *animation);
|
||
void gdk_pixbuf_animation_unref (GdkPixbufAnimation *animation);
|
||
#endif
|
||
|
||
int gdk_pixbuf_animation_get_width (GdkPixbufAnimation *animation);
|
||
int gdk_pixbuf_animation_get_height (GdkPixbufAnimation *animation);
|
||
gboolean gdk_pixbuf_animation_is_static_image (GdkPixbufAnimation *animation);
|
||
GdkPixbuf *gdk_pixbuf_animation_get_static_image (GdkPixbufAnimation *animation);
|
||
|
||
GdkPixbufAnimationIter *gdk_pixbuf_animation_get_iter (GdkPixbufAnimation *animation,
|
||
const GTimeVal *start_time);
|
||
GType gdk_pixbuf_animation_iter_get_type (void) G_GNUC_CONST;
|
||
int gdk_pixbuf_animation_iter_get_delay_time (GdkPixbufAnimationIter *iter);
|
||
GdkPixbuf *gdk_pixbuf_animation_iter_get_pixbuf (GdkPixbufAnimationIter *iter);
|
||
gboolean gdk_pixbuf_animation_iter_on_currently_loading_frame (GdkPixbufAnimationIter *iter);
|
||
gboolean gdk_pixbuf_animation_iter_advance (GdkPixbufAnimationIter *iter,
|
||
const GTimeVal *current_time);
|
||
|
||
|
||
|
||
|
||
G_CONST_RETURN gchar * gdk_pixbuf_get_option (GdkPixbuf *pixbuf,
|
||
const gchar *key);
|
||
|
||
|
||
|
||
typedef struct _GdkPixbufFormat GdkPixbufFormat;
|
||
|
||
GSList *gdk_pixbuf_get_formats (void);
|
||
gchar *gdk_pixbuf_format_get_name (GdkPixbufFormat *format);
|
||
gchar *gdk_pixbuf_format_get_description (GdkPixbufFormat *format);
|
||
gchar **gdk_pixbuf_format_get_mime_types (GdkPixbufFormat *format);
|
||
gchar **gdk_pixbuf_format_get_extensions (GdkPixbufFormat *format);
|
||
gboolean gdk_pixbuf_format_is_writable (GdkPixbufFormat *format);
|
||
|
||
G_END_DECLS
|
||
|
||
#include <gdk-pixbuf/gdk-pixbuf-loader.h>
|
||
#include <gdk-pixbuf/gdk-pixbuf-enum-types.h>
|
||
|
||
|
||
|
||
#endif
|