Dogcows Code - chaz/openbox/blob - otk/rendercontrol.hh

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2 #ifndef __rendercontrol_hh
   3 #define __rendercontrol_hh
   4
   5 extern "C" {
   6 #include <X11/Xlib.h>
   7 #include <X11/Xutil.h>
   8 }
   9
  10 namespace otk {
  11
  12 class ScreenInfo;
  13 class Widget;
  14
  15 class RenderControl {
  16 protected:
  17   const ScreenInfo *_screen;
  18
  19   int _red_bits;
  20   int _green_bits;
  21   int _blue_bits;
  22
  23   // color tables, meaning, 256 (possibly) different shades of each color,
  24   // based on the number of bits there are available for each color in the
  25   // visual
  26   unsigned char _red_color_table[256];
  27   unsigned char _green_color_table[256];
  28   unsigned char _blue_color_table[256];
  29
  30 /*
  31   Bool _dither;
  32
  33   int _cpc; // colors-per-channel: must be a value between [2,6]
  34   int _bpp; // bits-per-pixel
  35
  36   unsigned int *_grad_xbuffer;
  37   unsigned int *_grad_ybuffer;
  38   unsigned int _grad_buffer_width;
  39   unsigned int _grad_buffer_height;
  40
  41   unsigned long *_sqrt_table;
  42
  43   // These values are all determined based on a visual
  44
  45   int _red_bits;    // the number of bits (1-255) that each shade of color
  46   int _green_bits;  // spans across. best case is 1, which gives 255 shades.
  47   int _blue_bits;
  48   unsigned char _red_color_table[256];
  49   unsigned char _green_color_table[256];
  50   unsigned char _blue_color_table[256];
  51
  52   // These are only used for TrueColor visuals
  53   int _red_offset;  // the offset of each color in a color mask
  54   int _green_offset;
  55   int _blue_offset;
  56
  57   // These are only used for !TrueColor visuals
  58   XColor *_colors;
  59   int _ncolors;
  60 */
  61
  62   RenderControl(const ScreenInfo *screen);
  63
  64 public:
  65   virtual ~RenderControl();
  66
  67   static RenderControl *getRenderControl(int screen);
  68
  69   virtual void render(Widget *wi) = 0;
  70 };
  71
  72 }
  73
  74 #endif // __rendercontrol_hh