+ num_seen = 0;
+ while (i + 2 < num) { /* +2 is to make sure there is a w and h */
+ w = data[i++];
+ h = data[i++];
+ /* watch for the data being too small for the specified size,
+ or for zero sized icons. */
+ if (i + w*h > num || w == 0 || h == 0) break;
+
+ /* convert it to the right bit order for ObRender */
+ for (j = 0; j < w*h; ++j)
+ data[i+j] =
+ (((data[i+j] >> 24) & 0xff) << RrDefaultAlphaOffset) +
+ (((data[i+j] >> 16) & 0xff) << RrDefaultRedOffset) +
+ (((data[i+j] >> 8) & 0xff) << RrDefaultGreenOffset) +
+ (((data[i+j] >> 0) & 0xff) << RrDefaultBlueOffset);
+
+ /* is it in the cache? */
+ img = RrImageCacheFind(ob_rr_icons, &data[i], w, h);
+ if (img) RrImageRef(img); /* own it */
+
+ i += w*h;
+ ++num_seen;
+
+ /* don't bother looping anymore if we already found it in the cache
+ since we'll just use that! */
+ if (img) break;
+ }
+
+ /* if it's not in the cache yet, then add it to the cache now.
+ we have already converted it to the correct bit order above */
+ if (!img && num_seen > 0) {
+ img = RrImageNew(ob_rr_icons);
+ i = 0;
+ for (j = 0; j < num_seen; ++j) {