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

   1 #ifndef __GDK_CC_H__
   2 #define __GDK_CC_H__
   3
   4 #include <gdk/gdktypes.h>
   5
   6 #ifdef __cplusplus
   7 extern "C" {
   8 #endif /* __cplusplus */
   9
  10 typedef struct _GdkColorContextDither GdkColorContextDither;
  11 typedef struct _GdkColorContext GdkColorContext;
  12
  13
  14 /* Color Context modes.
  15  *
  16  * GDK_CC_MODE_UNDEFINED - unknown
  17  * GDK_CC_MODE_BW        - default B/W
  18  * GDK_CC_MODE_STD_CMAP  - has a standard colormap
  19  * GDK_CC_MODE_TRUE      - is a TrueColor/DirectColor visual
  20  * GDK_CC_MODE_MY_GRAY   - my grayramp
  21  * GDK_CC_MODE_PALETTE   - has a pre-allocated palette
  22  */
  23
  24 typedef enum
  25 {
  26   GDK_CC_MODE_UNDEFINED,
  27   GDK_CC_MODE_BW,
  28   GDK_CC_MODE_STD_CMAP,
  29   GDK_CC_MODE_TRUE,
  30   GDK_CC_MODE_MY_GRAY,
  31   GDK_CC_MODE_PALETTE
  32 } GdkColorContextMode;
  33
  34 struct _GdkColorContextDither
  35 {
  36   gint fast_rgb[32][32][32]; /* quick look-up table for faster rendering */
  37   gint fast_err[32][32][32]; /* internal RGB error information */
  38   gint fast_erg[32][32][32];
  39   gint fast_erb[32][32][32];
  40 };
  41
  42 struct _GdkColorContext
  43 {
  44   GdkVisual *visual;
  45   GdkColormap *colormap;
  46
  47   gint num_colors;              /* available no. of colors in colormap */
  48   gint max_colors;              /* maximum no. of colors */
  49   gint num_allocated;           /* no. of allocated colors */
  50
  51   GdkColorContextMode mode;
  52   gint need_to_free_colormap;
  53   GdkAtom std_cmap_atom;
  54
  55   gulong *clut;                 /* color look-up table */
  56   GdkColor *cmap;               /* colormap */
  57
  58   GHashTable *color_hash;       /* hash table of allocated colors */
  59   GdkColor *palette;            /* preallocated palette */
  60   gint num_palette;             /* size of palette */
  61
  62   GdkColorContextDither *fast_dither;   /* fast dither matrix */
  63
  64   struct
  65   {
  66     gint red;
  67     gint green;
  68     gint blue;
  69   } shifts;
  70
  71   struct
  72   {
  73     gulong red;
  74     gulong green;
  75     gulong blue;
  76   } masks;
  77
  78   struct
  79   {
  80     gint red;
  81     gint green;
  82     gint blue;
  83   } bits;
  84
  85   gulong max_entry;
  86
  87   gulong black_pixel;
  88   gulong white_pixel;
  89 };
  90
  91 GdkColorContext *gdk_color_context_new                    (GdkVisual   *visual,
  92                                                            GdkColormap *colormap);
  93
  94 GdkColorContext *gdk_color_context_new_mono               (GdkVisual   *visual,
  95                                                            GdkColormap *colormap);
  96
  97 void             gdk_color_context_free                   (GdkColorContext *cc);
  98
  99 gulong           gdk_color_context_get_pixel              (GdkColorContext *cc,
 100                                                            gushort          red,
 101                                                            gushort          green,
 102                                                            gushort          blue,
 103                                                            gint            *failed);
 104 void             gdk_color_context_get_pixels             (GdkColorContext *cc,
 105                                                            gushort         *reds,
 106                                                            gushort         *greens,
 107                                                            gushort         *blues,
 108                                                            gint             ncolors,
 109                                                            gulong          *colors,
 110                                                            gint            *nallocated);
 111 void             gdk_color_context_get_pixels_incremental (GdkColorContext *cc,
 112                                                            gushort         *reds,
 113                                                            gushort         *greens,
 114                                                            gushort         *blues,
 115                                                            gint             ncolors,
 116                                                            gint            *used,
 117                                                            gulong          *colors,
 118                                                            gint            *nallocated);
 119
 120 gint             gdk_color_context_query_color            (GdkColorContext *cc,
 121                                                            GdkColor        *color);
 122 gint             gdk_color_context_query_colors           (GdkColorContext *cc,
 123                                                            GdkColor        *colors,
 124                                                            gint             num_colors);
 125
 126 gint             gdk_color_context_add_palette            (GdkColorContext *cc,
 127                                                            GdkColor        *palette,
 128                                                            gint             num_palette);
 129
 130 void             gdk_color_context_init_dither            (GdkColorContext *cc);
 131 void             gdk_color_context_free_dither            (GdkColorContext *cc);
 132
 133 gulong           gdk_color_context_get_pixel_from_palette (GdkColorContext *cc,
 134                                                            gushort         *red,
 135                                                            gushort         *green,
 136                                                            gushort         *blue,
 137                                                            gint            *failed);
 138 guchar           gdk_color_context_get_index_from_palette (GdkColorContext *cc,
 139                                                            gint            *red,
 140                                                            gint            *green,
 141                                                            gint            *blue,
 142                                                            gint            *failed);
 143
 144
 145 #ifdef __cplusplus
 146 }
 147 #endif /* __cplusplus */
 148
 149 #endif /* __GDK_CC_H__ */