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Dogcows Code - chaz/openbox/blob - rendercolor.cc
448b3e109610c3fb00f8dc322b0f9d383a98a7d3
1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
5 #include "rendercolor.hh"
7 #include "screeninfo.hh"
13 std::map
<unsigned long, RenderColor::CacheItem
*> *RenderColor::_cache
= 0;
15 void RenderColor::initialize()
17 _cache
= new std::map
<unsigned long, CacheItem
*>[ScreenCount(**display
)];
20 void RenderColor::destroy()
25 RenderColor::RenderColor(int screen
, unsigned char red
,
26 unsigned char green
, unsigned char blue
)
36 RenderColor::RenderColor(int screen
, RGB rgb
)
46 void RenderColor::create() const
48 unsigned long color
= _blue
| _green
<< 8 | _red
<< 16;
50 // try get a gc from the cache
51 CacheItem
*item
= _cache
[_screen
][color
];
60 // allocate a color and GC from the server
61 const ScreenInfo
*info
= display
->screenInfo(_screen
);
63 XColor xcol
; // convert from 0-0xff to 0-0xffff
64 xcol
.red
= (_red
<< 8) | _red
;
65 xcol
.green
= (_green
<< 8) | _green
;
66 xcol
.blue
= (_blue
<< 8) | _blue
;
69 if (!XAllocColor(**display
, info
->colormap(), &xcol
)) {
70 fprintf(stderr
, "RenderColor: color alloc error: rgb:%x/%x/%x\n",
77 gcv
.foreground
= _pixel
;
78 gcv
.cap_style
= CapProjecting
;
79 _gc
= XCreateGC(**display
, info
->rootWindow(),
80 GCForeground
| GCCapStyle
, &gcv
);
83 // insert into the cache
84 item
= new CacheItem(_gc
, _pixel
);
85 _cache
[_screen
][color
] = item
;
92 unsigned long RenderColor::pixel() const
94 if (!_created
) create();
98 GC
RenderColor::gc() const
100 if (!_created
) create();
104 RenderColor::~RenderColor()
106 unsigned long color
= _blue
| _green
<< 8 | _red
<< 16;
109 CacheItem
*item
= _cache
[_screen
][color
];
110 assert(item
); // better be...
112 if (--item
->count
<= 0) {
113 // remove from the cache
114 XFreeGC(**display
, _gc
);
115 _cache
[_screen
][color
] = 0;
119 const ScreenInfo
*info
= display
->screenInfo(_screen
);
120 XFreeColors(**display
, info
->colormap(), &_pixel
, 1, 0);
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