gdkimage.h

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#ifndef __GDK_IMAGE_H__
#define __GDK_IMAGE_H__

#include <gdk/gdktypes.h>

#ifdef __cplusplus
extern "C" {
#endif                          /* __cplusplus */

/* Types of images.
 *   Normal: Normal X image type. These are slow as they involve passing
 *           the entire image through the X connection each time a draw
 *           request is required. On Win32, a bitmap.
 *   Shared: Shared memory X image type. These are fast as the X server
 *           and the program actually use the same piece of memory. They
 *           should be used with care though as there is the possibility
 *           for both the X server and the program to be reading/writing
 *           the image simultaneously and producing undesired results.
 *           On Win32, also a bitmap.
 *   Shared Pixmap: Also a shared memory image, which also has a
 *           pixmap using the same memory. Used by gdk_imlib with the
 *           Win32 backend.
 */
   typedef enum {
      GDK_IMAGE_NORMAL,
      GDK_IMAGE_SHARED,
      GDK_IMAGE_FASTEST,
      GDK_IMAGE_SHARED_PIXMAP
   } GdkImageType;

   struct _GdkImage {
      GdkImageType type;
      GdkVisual *visual;        /* visual used to create the image */
      GdkByteOrder byte_order;
      guint16 width;
      guint16 height;
      guint16 depth;
      guint16 bpp;              /* bytes per pixel */
      guint16 bpl;              /* bytes per line */
      gpointer mem;
   };

   GdkImage *gdk_image_new_bitmap(GdkVisual * visual,
                                  gpointer data, gint width, gint height);
   GdkImage *gdk_image_new(GdkImageType type,
                           GdkVisual * visual, gint width, gint height);
#ifdef GDK_WINDOWING_WIN32
   GdkImage *gdk_image_bitmap_new(GdkImageType type,
                                  GdkVisual * visual,
                                  gint width, gint height);

#endif
   GdkImage *gdk_image_get(GdkDrawable * drawable,
                           gint x, gint y, gint width, gint height);

   GdkImage *gdk_image_ref(GdkImage * image);
   void gdk_image_unref(GdkImage * image);

   void gdk_image_put_pixel(GdkImage * image,
                            gint x, gint y, guint32 pixel);
   guint32 gdk_image_get_pixel(GdkImage * image, gint x, gint y);


#ifdef __cplusplus
}
#endif                          /* __cplusplus */
#endif                          /* __GDK_IMAGE_H__ */

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