--- /dev/null
+#include "render.h"
+#include "instance.h"
+
+static RrInstance *definst = NULL;
+
+void RrTrueColorSetup (RrInstance *inst);
+void RrPseudoColorSetup (RrInstance *inst);
+
+RrInstance* RrInstanceNew (Display *display, gint screen)
+{
+ definst = g_new (RrInstance, 1);
+ definst->display = display;
+ definst->screen = screen;
+
+ definst->depth = DefaultDepth(display, screen);
+ definst->visual = DefaultVisual(display, screen);
+ definst->colormap = DefaultColormap(display, screen);
+
+ definst->pseudo_colors = NULL;
+
+ switch (definst->visual->class) {
+ case TrueColor:
+ RrTrueColorSetup(definst);
+ break;
+ case PseudoColor:
+ case StaticColor:
+ case GrayScale:
+ case StaticGray:
+ RrPseudoColorSetup(definst);
+ break;
+ default:
+ g_critical("Unsupported visual class");
+ g_free (definst);
+ return definst = NULL;
+ }
+ return definst;
+}
+
+void RrTrueColorSetup (RrInstance *inst)
+{
+ unsigned long red_mask, green_mask, blue_mask;
+ XImage *timage = NULL;
+
+ timage = XCreateImage(inst->display, inst->visual, inst->depth,
+ ZPixmap, 0, NULL, 1, 1, 32, 0);
+ g_assert(timage != NULL);
+ /* find the offsets for each color in the visual's masks */
+ inst->red_mask = red_mask = timage->red_mask;
+ inst->green_mask = green_mask = timage->green_mask;
+ inst->blue_mask = blue_mask = timage->blue_mask;
+
+ inst->red_offset = 0;
+ inst->green_offset = 0;
+ inst->blue_offset = 0;
+
+ while (! (red_mask & 1)) { inst->red_offset++; red_mask >>= 1; }
+ while (! (green_mask & 1)) { inst->green_offset++; green_mask >>= 1; }
+ while (! (blue_mask & 1)) { inst->blue_offset++; blue_mask >>= 1; }
+
+ inst->red_shift = inst->green_shift = inst->blue_shift = 8;
+ while (red_mask) { red_mask >>= 1; inst->red_shift--; }
+ while (green_mask) { green_mask >>= 1; inst->green_shift--; }
+ while (blue_mask) { blue_mask >>= 1; inst->blue_shift--; }
+ XFree(timage);
+}
+
+#define RrPseudoNcolors(isnt) (1 << (inst->pseudo_bpc * 3))
+
+void RrPseudoColorSetup (RrInstance *inst)
+{
+ 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 */
+ inst->pseudo_bpc = 2; /* XXX THIS SHOULD BE A USER OPTION */
+ g_assert(inst->pseudo_bpc >= 1);
+ _ncolors = RrPseudoNcolors(inst);
+
+ if (_ncolors > 1 << inst->depth) {
+ g_warning("PseudoRenderControl: Invalid colormap size. Resizing.\n");
+ inst->pseudo_bpc = 1 << (inst->depth/3) >> 3;
+ _ncolors = 1 << (inst->pseudo_bpc * 3);
+ }
+
+ /* build a color cube */
+ inst->pseudo_colors = g_new(XColor, _ncolors);
+ cpc = 1 << inst->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);
+ inst->pseudo_colors[n].red = tr | tr << 8;
+ inst->pseudo_colors[n].green = tg | tg << 8;
+ inst->pseudo_colors[n].blue = tb | tb << 8;
+ /* used to track allocation */
+ inst->pseudo_colors[n].flags = DoRed|DoGreen|DoBlue;
+ }
+
+ /* allocate the colors */
+ for (i = 0; i < _ncolors; i++)
+ if (!XAllocColor(inst->display, inst->colormap,
+ &inst->pseudo_colors[i]))
+ inst->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 << inst->depth) > 256) ? 256 : (1 << inst->depth));
+ for (i = 0; i < incolors; i++)
+ icolors[i].pixel = i;
+ XQueryColors(inst->display, inst->colormap, icolors, incolors);
+
+ /* try match unallocated ones */
+ for (i = 0; i < _ncolors; i++) {
+ if (!inst->pseudo_colors[i].flags) { /* if it wasn't allocated... */
+ unsigned long closest = 0xffffffff, close = 0;
+ for (ii = 0; ii < incolors; ii++) {
+ /* find deviations */
+ r = (inst->pseudo_colors[i].red - icolors[ii].red) & 0xff;
+ g = (inst->pseudo_colors[i].green - icolors[ii].green) & 0xff;
+ b = (inst->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;
+ }
+ }
+
+ inst->pseudo_colors[i].red = icolors[close].red;
+ inst->pseudo_colors[i].green = icolors[close].green;
+ inst->pseudo_colors[i].blue = icolors[close].blue;
+ inst->pseudo_colors[i].pixel = icolors[close].pixel;
+
+ /* try alloc this closest color, it had better succeed! */
+ if (XAllocColor(inst->display, inst->colormap,
+ &inst->pseudo_colors[i]))
+ /* mark as alloced */
+ inst->pseudo_colors[i].flags = DoRed|DoGreen|DoBlue;
+ else
+ /* wtf has gone wrong, its already alloced for chissake! */
+ g_assert_not_reached();
+ }
+ }
+}
+
+void RrInstanceFree (RrInstance *inst)
+{
+ if (inst) {
+ if (inst == definst) definst = NULL;
+ g_free(inst->pseudo_colors);
+ }
+}
+
+Display* RrDisplay (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->display;
+}
+
+gint RrScreen (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->screen;
+}
+
+Window RrRootWindow (const RrInstance *inst)
+{
+ return RootWindow (RrDisplay (inst), RrScreen (inst));
+}
+
+Visual *RrVisual (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->visual;
+}
+
+gint RrDepth (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->depth;
+}
+
+Colormap RrColormap (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->colormap;
+}
+
+gint RrRedOffset (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->red_offset;
+}
+
+gint RrGreenOffset (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->green_offset;
+}
+
+gint RrBlueOffset (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->blue_offset;
+}
+
+gint RrRedShift (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->red_shift;
+}
+
+gint RrGreenShift (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->green_shift;
+}
+
+gint RrBlueShift (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->blue_shift;
+}
+
+gint RrRedMask (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->red_mask;
+}
+
+gint RrGreenMask (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->green_mask;
+}
+
+gint RrBlueMask (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->blue_mask;
+}
+
+guint RrPseudoBPC (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->pseudo_bpc;
+}
+
+XColor *RrPseudoColors (const RrInstance *inst)
+{
+ return (inst ? inst : definst)->pseudo_colors;
+}
projects / chaz / openbox / blobdiff