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Dogcows Code - chaz/openbox/blob - otk/rendercolor.cc
1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
4 # include "../config.h"
5 #endif // HAVE_CONFIG_H
7 #include "rendercolor.hh"
9 #include "screeninfo.hh"
19 std::map
<unsigned long, RenderColor::CacheItem
*> *RenderColor::_cache
= 0;
21 void RenderColor::initialize()
23 _cache
= new std::map
<unsigned long, CacheItem
*>[ScreenCount(**display
)];
26 void RenderColor::destroy()
31 RenderColor::RenderColor(int screen
, unsigned char red
,
32 unsigned char green
, unsigned char blue
)
42 RenderColor::RenderColor(int screen
, RGB rgb
)
52 void RenderColor::create()
54 unsigned long color
= _blue
| _green
<< 8 | _red
<< 16;
56 // try get a gc from the cache
57 CacheItem
*item
= _cache
[_screen
][color
];
66 // allocate a color and GC from the server
67 const ScreenInfo
*info
= display
->screenInfo(_screen
);
69 XColor xcol
; // convert from 0-0xff to 0-0xffff
70 xcol
.red
= _red
; xcol
.red
|= xcol
.red
<< 8;
71 xcol
.green
= _green
; xcol
.green
|= xcol
.green
<< 8;
72 xcol
.blue
= _blue
; xcol
.blue
|= xcol
.blue
<< 8;
75 if (! XAllocColor(**display
, info
->colormap(), &xcol
)) {
76 fprintf(stderr
, "RenderColor: color alloc error: rgb:%x/%x/%x\n",
82 gcv
.foreground
= _pixel
;
83 gcv
.cap_style
= CapProjecting
;
84 _gc
= XCreateGC(**display
, info
->rootWindow(),
85 GCForeground
| GCCapStyle
, &gcv
);
88 // insert into the cache
89 item
= new CacheItem(_gc
, _pixel
);
90 _cache
[_screen
][color
] = item
;
95 RenderColor::~RenderColor()
97 unsigned long color
= _blue
| _green
<< 8 | _red
<< 16;
99 CacheItem
*item
= _cache
[_screen
][color
];
100 assert(item
); // it better be in the cache ...
102 if (--item
->count
<= 0) {
103 // remove from the cache
104 XFreeGC(**display
, _gc
);
105 _cache
[_screen
][color
] = 0;
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