1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
2 #ifndef __rendercontrol_hh
3 #define __rendercontrol_hh
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
28 unsigned char _red_color_table[256];
29 unsigned char _green_color_table[256];
30 unsigned char _blue_color_table[256];
36 int _cpc; // colors-per-channel: must be a value between [2,6]
37 int _bpp; // bits-per-pixel
39 unsigned int *_grad_xbuffer;
40 unsigned int *_grad_ybuffer;
41 unsigned int _grad_buffer_width;
42 unsigned int _grad_buffer_height;
44 unsigned long *_sqrt_table;
46 // These values are all determined based on a visual
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.
51 unsigned char _red_color_table[256];
52 unsigned char _green_color_table[256];
53 unsigned char _blue_color_table[256];
55 // These are only used for TrueColor visuals
56 int _red_offset; // the offset of each color in a color mask
60 // These are only used for !TrueColor visuals
65 RenderControl(int screen);
67 virtual void drawSolidBackground(Surface& sf,
68 const RenderTexture& texture) const;
71 virtual ~RenderControl();
73 static RenderControl *getRenderControl(int screen);
75 virtual void drawRoot(const RenderColor &color) const;
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;
82 //! Draws a background onto a Surface, as specified by a RenderTexture
83 virtual void drawBackground(Surface &sf,
84 const RenderTexture &texture) const = 0;
89 #endif // __rendercontrol_hh