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Dogcows Code - chaz/openbox/blob - otk/truerendercontrol.cc
a99b1997e3e09d66267f3b78e4cdae7ac4054777
1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
4 # include "../config.h"
5 #endif // HAVE_CONFIG_H
7 #include "truerendercontrol.hh"
9 #include "screeninfo.hh"
14 #endif // HAVE_STDLIB_H
17 #define _(str) gettext(str)
22 TrueRenderControl::TrueRenderControl(const ScreenInfo
*screen
)
23 : RenderControl(screen
)
25 printf("Initializing TrueColor RenderControl\n");
27 unsigned long red_mask
, green_mask
, blue_mask
;
29 // find the offsets for each color in the visual's masks
30 red_mask
= screen
->visual()->red_mask
;
31 green_mask
= screen
->visual()->green_mask
;
32 blue_mask
= screen
->visual()->blue_mask
;
34 while (! (red_mask
& 1)) { _red_offset
++; red_mask
>>= 1; }
35 while (! (green_mask
& 1)) { _green_offset
++; green_mask
>>= 1; }
36 while (! (blue_mask
& 1)) { _blue_offset
++; blue_mask
>>= 1; }
38 // use the mask to determine the number of bits for each shade of color
39 // so, best case, red_mask == 0xff (255), with each bit as a different
41 _red_bits
= 255 / red_mask
;
42 _green_bits
= 255 / green_mask
;
43 _blue_bits
= 255 / blue_mask
;
45 // compute color tables, based on the number of bits for each shade
46 for (int i
= 0; i
< 256; i
++) {
47 _red_color_table
[i
] = i
/ _red_bits
;
48 _green_color_table
[i
] = i
/ _green_bits
;
49 _blue_color_table
[i
] = i
/ _blue_bits
;
53 TrueRenderControl::~TrueRenderControl()
55 printf("Destroying TrueColor RenderControl\n");
60 void TrueRenderControl::render(::Drawable d
)
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