+ unsigned long red_mask, green_mask, blue_mask;
+ XImage *timage = NULL;
+
+ timage = XCreateImage(ob_display, render_visual, render_depth,
+ ZPixmap, 0, NULL, 1, 1, 32, 0);
+ g_assert(timage != NULL);
+ /* find the offsets for each color in the visual's masks */
+ red_mask = timage->red_mask;
+ green_mask = timage->green_mask;
+ blue_mask = timage->blue_mask;
+
+ render_red_offset = 0;
+ render_green_offset = 0;
+ render_blue_offset = 0;
+
+ while (! (red_mask & 1)) { render_red_offset++; red_mask >>= 1; }
+ while (! (green_mask & 1)) { render_green_offset++; green_mask >>= 1; }
+ while (! (blue_mask & 1)) { render_blue_offset++; blue_mask >>= 1; }
+
+ render_red_shift = render_green_shift = render_blue_shift = 8;
+ while (red_mask) { red_mask >>= 1; render_red_shift--; }
+ while (green_mask) { green_mask >>= 1; render_green_shift--; }
+ while (blue_mask) { blue_mask >>= 1; render_blue_shift--; }
+ XFree(timage);
+}
+
+void pseudocolor_startup(void)
+{
+ XColor icolors[256];
+ int tr, tg, tb, n, r, g, b, i, incolors, ii;
+ unsigned long dev;
+ int cpc, _ncolors;
+ g_message("Initializing PseudoColor RenderControl\n");
+
+ /* determine the number of colors and the bits-per-color */
+ pseudo_bpc = 2; /* XXX THIS SHOULD BE A USER OPTION */
+ g_assert(pseudo_bpc >= 1);
+ _ncolors = 1 << (pseudo_bpc * 3);
+
+ if (_ncolors > 1 << render_depth) {
+ g_warning("PseudoRenderControl: Invalid colormap size. Resizing.\n");
+ pseudo_bpc = 1 << (render_depth/3) >> 3;
+ _ncolors = 1 << (pseudo_bpc * 3);
+ }
+
+ /* build a color cube */
+ pseudo_colors = malloc(_ncolors * sizeof(XColor));
+ cpc = 1 << pseudo_bpc; /* colors per channel */
+
+ for (n = 0, r = 0; r < cpc; r++)
+ for (g = 0; g < cpc; g++)
+ for (b = 0; b < cpc; b++, n++) {
+ tr = (int)(((float)(r)/(float)(cpc-1)) * 0xFF);
+ tg = (int)(((float)(g)/(float)(cpc-1)) * 0xFF);
+ tb = (int)(((float)(b)/(float)(cpc-1)) * 0xFF);
+ pseudo_colors[n].red = tr | tr << 8;
+ pseudo_colors[n].green = tg | tg << 8;
+ pseudo_colors[n].blue = tb | tb << 8;
+ pseudo_colors[n].flags = DoRed|DoGreen|DoBlue; /* used to track
+ allocation */
+ }
+
+ /* allocate the colors */
+ for (i = 0; i < _ncolors; i++)
+ if (!XAllocColor(ob_display, render_colormap, &pseudo_colors[i]))
+ pseudo_colors[i].flags = 0; /* mark it as unallocated */
+
+ /* try allocate any colors that failed allocation above */
+
+ /* get the allocated values from the X server (only the first 256 XXX why!?)
+ */
+ incolors = (((1 << render_depth) > 256) ? 256 : (1 << render_depth));
+ for (i = 0; i < incolors; i++)
+ icolors[i].pixel = i;
+ XQueryColors(ob_display, render_colormap, icolors, incolors);
+
+ /* try match unallocated ones */
+ for (i = 0; i < _ncolors; i++) {
+ if (!pseudo_colors[i].flags) { /* if it wasn't allocated... */
+ unsigned long closest = 0xffffffff, close = 0;
+ for (ii = 0; ii < incolors; ii++) {
+ /* find deviations */
+ r = (pseudo_colors[i].red - icolors[ii].red) & 0xff;
+ g = (pseudo_colors[i].green - icolors[ii].green) & 0xff;
+ b = (pseudo_colors[i].blue - icolors[ii].blue) & 0xff;
+ /* find a weighted absolute deviation */
+ dev = (r * r) + (g * g) + (b * b);
+
+ if (dev < closest) {
+ closest = dev;
+ close = ii;
+ }
+ }
+
+ pseudo_colors[i].red = icolors[close].red;
+ pseudo_colors[i].green = icolors[close].green;
+ pseudo_colors[i].blue = icolors[close].blue;
+ pseudo_colors[i].pixel = icolors[close].pixel;
+
+ /* try alloc this closest color, it had better succeed! */
+ if (XAllocColor(ob_display, render_colormap, &pseudo_colors[i]))
+ pseudo_colors[i].flags = DoRed|DoGreen|DoBlue; /* mark as alloced */
+ else
+ g_assert(FALSE); /* wtf has gone wrong, its already alloced for
+ chissake! */
+ }
+ }
+}
+
+void x_paint(Window win, Appearance *l)
+{
+ int i, transferred = 0, sw;
+ pixel32 *source, *dest;