1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
5 #include "rendercolor.hh"
7 #include "screeninfo.hh"
8 #include "rendercontrol.hh"
14 std::map<unsigned long, RenderColor::CacheItem*> *RenderColor::_cache = 0;
16 void RenderColor::initialize()
18 _cache = new std::map<unsigned long, CacheItem*>[ScreenCount(**display)];
21 void RenderColor::destroy()
26 RenderColor::RenderColor(int screen, unsigned char red,
27 unsigned char green, unsigned char blue)
36 RenderColor::RenderColor(int screen, RGB rgb)
45 void RenderColor::create()
47 unsigned long color = _blue | _green << 8 | _red << 16;
49 // try get a gc from the cache
50 CacheItem *item = _cache[_screen][color];
59 // allocate a color and GC from the server
60 const ScreenInfo *info = display->screenInfo(_screen);
62 XColor xcol; // convert from 0-0xff to 0-0xffff
63 xcol.red = (_red << 8) | _red;
64 xcol.green = (_green << 8) | _green;
65 xcol.blue = (_blue << 8) | _blue;
67 display->renderControl(_screen)->allocateColor(&xcol);
70 gcv.foreground = _pixel;
71 gcv.cap_style = CapProjecting;
72 _gc = XCreateGC(**display, info->rootWindow(),
73 GCForeground | GCCapStyle, &gcv);
76 // insert into the cache
77 item = new CacheItem(_gc, _pixel);
78 _cache[_screen][color] = item;
83 RenderColor::~RenderColor()
85 unsigned long color = _blue | _green << 8 | _red << 16;
87 CacheItem *item = _cache[_screen][color];
88 assert(item); // better be...
90 if (--item->count <= 0) {
91 // remove from the cache
92 XFreeGC(**display, _gc);
93 _cache[_screen][color] = 0;
96 const ScreenInfo *info = display->screenInfo(_screen);
97 XFreeColors(**display, info->colormap(), &_pixel, 1, 0);