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 #include "surface.hh"
  11
  12 namespace otk {
  13
  14 class ScreenInfo;
  15 class RenderTexture;
  16 class Font;
  17 class RenderColor;
  18 class ustring;
  19
  20 class RenderControl {
  21 protected:
  22   int _screen;
  23
  24   /*
  25   // color tables, meaning, 256 (possibly) different shades of each color,
  26   // based on the number of bits there are available for each color in the
  27   // visual
  28   unsigned char _red_color_table[256];
  29   unsigned char _green_color_table[256];
  30   unsigned char _blue_color_table[256];
  31   */
  32
  33 /*
  34   Bool _dither;
  35
  36   int _cpc; // colors-per-channel: must be a value between [2,6]
  37   int _bpp; // bits-per-pixel
  38
  39   unsigned int *_grad_xbuffer;
  40   unsigned int *_grad_ybuffer;
  41   unsigned int _grad_buffer_width;
  42   unsigned int _grad_buffer_height;
  43
  44   unsigned long *_sqrt_table;
  45
  46   // These values are all determined based on a visual
  47
  48   int _red_bits;    // the number of bits (1-255) that each shade of color
  49   int _green_bits;  // spans across. best case is 1, which gives 255 shades.
  50   int _blue_bits;
  51   unsigned char _red_color_table[256];
  52   unsigned char _green_color_table[256];
  53   unsigned char _blue_color_table[256];
  54
  55   // These are only used for TrueColor visuals
  56   int _red_offset;  // the offset of each color in a color mask
  57   int _green_offset;
  58   int _blue_offset;
  59
  60   // These are only used for !TrueColor visuals
  61   XColor *_colors;
  62   int _ncolors;
  63 */
  64
  65   RenderControl(int screen);
  66
  67   virtual void drawSolidBackground(Surface& sf,
  68                                    const RenderTexture& texture) const;
  69
  70 public:
  71   virtual ~RenderControl();
  72
  73   static RenderControl *getRenderControl(int screen);
  74
  75   virtual void drawRoot(const RenderColor &color) const;
  76
  77   //! Draws a string onto a Surface
  78   virtual void drawString(Surface &sf, const Font &font, int x, int y,
  79                           const RenderColor &color,
  80                           const ustring &string) const;
  81
  82   //! Draws a background onto a Surface, as specified by a RenderTexture
  83   virtual void drawBackground(Surface &sf,
  84                               const RenderTexture &texture) const = 0;
  85 };
  86
  87 }
  88
  89 #endif // __rendercontrol_hh