Pileus Git - ~andy/gtk/blob - gdk/gdkimage.h

   1 #ifndef __GDK_IMAGE_H__
   2 #define __GDK_IMAGE_H__
   3
   4 #include <gdk/gdktypes.h>
   5
   6 #ifdef __cplusplus
   7 extern "C" {
   8 #endif /* __cplusplus */
   9
  10 /* Types of images.
  11  *   Normal: Normal X image type. These are slow as they involve passing
  12  *           the entire image through the X connection each time a draw
  13  *           request is required. On Win32, a bitmap.
  14  *   Shared: Shared memory X image type. These are fast as the X server
  15  *           and the program actually use the same piece of memory. They
  16  *           should be used with care though as there is the possibility
  17  *           for both the X server and the program to be reading/writing
  18  *           the image simultaneously and producing undesired results.
  19  *           On Win32, also a bitmap.
  20  */
  21 typedef enum
  22 {
  23   GDK_IMAGE_NORMAL,
  24   GDK_IMAGE_SHARED,
  25   GDK_IMAGE_FASTEST
  26 } GdkImageType;
  27
  28 typedef struct _GdkImageClass GdkImageClass;
  29
  30 #define GDK_TYPE_IMAGE              (gdk_image_get_type ())
  31 #define GDK_IMAGE(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_IMAGE, GdkImage))
  32 #define GDK_IMAGE_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_IMAGE, GdkImageClass))
  33 #define GDK_IS_IMAGE(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_IMAGE))
  34 #define GDK_IS_IMAGE_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_IMAGE))
  35 #define GDK_IMAGE_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_IMAGE, GdkImageClass))
  36
  37 struct _GdkImage
  38 {
  39   GObject parent_instance;
  40
  41   GdkImageType  type;
  42   GdkVisual    *visual;     /* visual used to create the image */
  43   GdkByteOrder  byte_order;
  44   gint          width;
  45   gint          height;
  46   guint16       depth;
  47   guint16       bpp;        /* bytes per pixel */
  48   guint16       bpl;        /* bytes per line */
  49   gpointer      mem;
  50
  51   gpointer windowing_data;
  52 };
  53
  54 struct _GdkImageClass
  55 {
  56   GObjectClass parent_class;
  57 };
  58
  59 GType     gdk_image_get_type   (void) G_GNUC_CONST;
  60
  61 GdkImage* gdk_image_new_bitmap (GdkVisual     *visual,
  62                                 gpointer      data,
  63                                 gint          width,
  64                                 gint          height);
  65 GdkImage*  gdk_image_new       (GdkImageType  type,
  66                                 GdkVisual    *visual,
  67                                 gint          width,
  68                                 gint          height);
  69
  70 GdkImage*  gdk_image_get       (GdkDrawable  *drawable,
  71                                 gint          x,
  72                                 gint          y,
  73                                 gint          width,
  74                                 gint          height);
  75
  76 GdkImage * gdk_image_ref       (GdkImage     *image);
  77 void       gdk_image_unref     (GdkImage     *image);
  78
  79 void       gdk_image_put_pixel (GdkImage     *image,
  80                                 gint          x,
  81                                 gint          y,
  82                                 guint32       pixel);
  83 guint32    gdk_image_get_pixel (GdkImage     *image,
  84                                 gint          x,
  85                                 gint          y);
  86
  87 #ifdef __cplusplus
  88 }
  89 #endif /* __cplusplus */
  90
  91 #endif /* __GDK_IMAGE_H__ */