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Dogcows Code - chaz/openbox/blob - truerendercontrol.cc
05a1d676775d6ef03dbf5723c0ae6245dcb37463
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"
11 #include "rendertexture.hh"
16 #endif // HAVE_STDLIB_H
19 #define _(str) gettext(str)
24 TrueRenderControl::TrueRenderControl(int screen
)
25 : RenderControl(screen
),
30 printf("Initializing TrueColor RenderControl\n");
32 Visual
*visual
= display
->screenInfo(_screen
)->visual();
33 unsigned long red_mask
, green_mask
, blue_mask
;
35 // find the offsets for each color in the visual's masks
36 red_mask
= visual
->red_mask
;
37 green_mask
= visual
->green_mask
;
38 blue_mask
= visual
->blue_mask
;
40 while (! (red_mask
& 1)) { _red_offset
++; red_mask
>>= 1; }
41 while (! (green_mask
& 1)) { _green_offset
++; green_mask
>>= 1; }
42 while (! (blue_mask
& 1)) { _blue_offset
++; blue_mask
>>= 1; }
44 _red_shift
= _green_shift
= _blue_shift
= 8;
45 while (red_mask
) { red_mask
>>= 1; _red_shift
--; }
46 while (green_mask
) { green_mask
>>= 1; _green_shift
--; }
47 while (blue_mask
) { blue_mask
>>= 1; _blue_shift
--; }
50 TrueRenderControl::~TrueRenderControl()
52 printf("Destroying TrueColor RenderControl\n");
58 static inline void renderPixel(XImage
*im
, unsigned char *dp
,
61 unsigned int bpp
= im
->bits_per_pixel
+ (im
->byte_order
== MSBFirst
? 1 : 0);
98 assert(false); // wtf?
102 void TrueRenderControl::drawGradientBackground(
103 Surface
&sf
, const RenderTexture
&texture
) const
105 int w
= sf
.width(), h
= sf
.height();
107 const ScreenInfo
*info
= display
->screenInfo(_screen
);
108 XImage
*im
= XCreateImage(**display
, info
->visual(), info
->depth(),
109 ZPixmap
, 0, NULL
, w
, h
, 32, 0);
111 pixel32
*data
= new pixel32
[sf
.height()*sf
.width()];
117 dr
= (float)(texture
.secondary_color().red() - texture
.color().red());
118 dr
/= (float)sf
.height();
120 dg
= (float)(texture
.secondary_color().green() - texture
.color().green());
121 dg
/= (float)sf
.height();
123 db
= (float)(texture
.secondary_color().blue() - texture
.color().blue());
124 db
/= (float)sf
.height();
126 for (int y
= 0; y
< h
; ++y
) {
127 r
= texture
.color().red() + (int)(dr
* y
);
128 g
= texture
.color().green() + (int)(dg
* y
);
129 b
= texture
.color().blue() + (int)(db
* y
);
133 for (int x
= 0; x
< w
; ++x
, dp
++)
137 im
->data
= (char*) data
;
146 void TrueRenderControl::drawBackground(Surface
& sf
,
147 const RenderTexture
&texture
) const
149 assert(_screen
== sf
._screen
);
150 assert(_screen
== texture
.color().screen());
152 if (texture
.gradient() == RenderTexture::Solid
) {
153 drawSolidBackground(sf
, texture
);
155 drawGradientBackground(sf
, texture
);
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