void IVGAMap::setMergePoint(int id, int merge_id)
{
if (id == -1) {
return;
}
PixelRef pix;
if (merge_id == -1) {
pix = id;
}
else {
pix = PixelRef(merge_id);
}
// you cannot just set the merge point, as this is associated with a merge line
// so this piece of code sets up the merge for you properly:
((PointMap *)m_data)->mergePixels(id,pix);
}
unsigned long bt::ColorCache::find(unsigned int screen, int r, int g, int b) {
if (r < 0 && r > 255)
r = 0;
if (g < 0 && g > 255)
g = 0;
if (b < 0 && b > 255)
b = 0;
// see if we have allocated this color before
RGB rgb(screen, r, g, b);
Cache::iterator it = cache.find(rgb);
if (it != cache.end()) {
// found a cached color, use it
++it->second.count;
#ifdef COLORCACHE_DEBUG
fprintf(stderr, "bt::ColorCache: use %02x/%02x/%02x, count %4u\n",
r, g, b, it->second.count);
#endif // COLORCACHE_DEBUG
return it->second.pixel;
}
XColor xcol;
xcol.red = r | r << 8;
xcol.green = g | g << 8;
xcol.blue = b | b << 8;
xcol.pixel = 0;
xcol.flags = DoRed | DoGreen | DoBlue;
Colormap colormap = _display.screenInfo(screen).colormap();
if (!XAllocColor(_display.XDisplay(), colormap, &xcol)) {
fprintf(stderr,
"bt::Color::pixel: cannot allocate color 'rgb:%02x/%02x/%02x'\n",
r, g, b);
xcol.pixel = BlackPixel(_display.XDisplay(), screen);
}
#ifdef COLORCACHE_DEBUG
fprintf(stderr, "bt::ColorCache: add %02x/%02x/%02x, pixel %08lx\n",
r, g, b, xcol.pixel);
#endif // COLORCACHE_DEBUG
cache.insert(CacheItem(rgb, PixelRef(xcol.pixel)));
return xcol.pixel;
}
