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/* GdkPixbuf library - GdkPixbuf data structure
*
* Copyright (C) 2003 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.
*/
#if defined(GDK_PIXBUF_DISABLE_SINGLE_INCLUDES) && !defined (GDK_PIXBUF_H_INSIDE) && !defined (GDK_PIXBUF_COMPILATION)
#error "Only <gdk-pixbuf/gdk-pixbuf.h> can be included directly."
#endif
#ifndef GDK_PIXBUF_CORE_H
#define GDK_PIXBUF_CORE_H
#include <glib.h>
#include <glib-object.h>
#include <gio/gio.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;
#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))
/* 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);
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 */
#ifdef G_OS_WIN32
/* DLL ABI stability hack. */
#define gdk_pixbuf_new_from_file gdk_pixbuf_new_from_file_utf8
#define gdk_pixbuf_new_from_file_at_size gdk_pixbuf_new_from_file_at_size_utf8
#define gdk_pixbuf_new_from_file_at_scale gdk_pixbuf_new_from_file_at_scale_utf8
#endif
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_file_at_scale (const char *filename,
int width,
int height,
gboolean preserve_aspect_ratio,
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 */
#ifdef G_OS_WIN32
/* DLL ABI stability hack. */
#define gdk_pixbuf_save gdk_pixbuf_save_utf8
#define gdk_pixbuf_savev gdk_pixbuf_savev_utf8
#endif
gboolean gdk_pixbuf_save (GdkPixbuf *pixbuf,
const char *filename,
const char *type,
GError **error,
...) G_GNUC_NULL_TERMINATED;
gboolean gdk_pixbuf_savev (GdkPixbuf *pixbuf,
const char *filename,
const char *type,
char **option_keys,
char **option_values,
GError **error);
/* Saving to a callback function */
typedef gboolean (*GdkPixbufSaveFunc) (const gchar *buf,
gsize count,
GError **error,
gpointer data);
gboolean gdk_pixbuf_save_to_callback (GdkPixbuf *pixbuf,
GdkPixbufSaveFunc save_func,
gpointer user_data,
const char *type,
GError **error,
...) G_GNUC_NULL_TERMINATED;
gboolean gdk_pixbuf_save_to_callbackv (GdkPixbuf *pixbuf,
GdkPixbufSaveFunc save_func,
gpointer user_data,
const char *type,
char **option_keys,
char **option_values,
GError **error);
/* Saving into a newly allocated char array */
gboolean gdk_pixbuf_save_to_buffer (GdkPixbuf *pixbuf,
gchar **buffer,
gsize *buffer_size,
const char *type,
GError **error,
...) G_GNUC_NULL_TERMINATED;
gboolean gdk_pixbuf_save_to_bufferv (GdkPixbuf *pixbuf,
gchar **buffer,
gsize *buffer_size,
const char *type,
char **option_keys,
char **option_values,
GError **error);
GdkPixbuf *gdk_pixbuf_new_from_stream (GInputStream *stream,
GCancellable *cancellable,
GError **error);
GdkPixbuf *gdk_pixbuf_new_from_stream_at_scale (GInputStream *stream,
gint width,
gint height,
gboolean preserve_aspect_ratio,
GCancellable *cancellable,
GError **error);
gboolean gdk_pixbuf_save_to_stream (GdkPixbuf *pixbuf,
GOutputStream *stream,
const char *type,
GCancellable *cancellable,
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);
/* Transform an image to agree with its embedded orientation option / tag */
GdkPixbuf *gdk_pixbuf_apply_embedded_orientation (GdkPixbuf *src);
G_CONST_RETURN gchar * gdk_pixbuf_get_option (GdkPixbuf *pixbuf,
const gchar *key);
G_END_DECLS
#endif /* GDK_PIXBUF_CORE_H */
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