+
+gboolean render_pixmap_to_rgba(Pixmap pmap, Pixmap mask,
+ int *w, int *h, pixel32 **data)
+{
+ Window xr;
+ int xx, xy;
+ guint pw, ph, mw, mh, xb, xd, i, x, y, di;
+ XImage *xi, *xm = NULL;
+
+ if (!XGetGeometry(ob_display, pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
+ return FALSE;
+ if (mask) {
+ if (!XGetGeometry(ob_display, mask, &xr, &xx, &xy, &mw, &mh, &xb, &xd))
+ return FALSE;
+ if (pw != mw || ph != mh || xd != 1)
+ return FALSE;
+ }
+
+ xi = XGetImage(ob_display, pmap, 0, 0, pw, ph, 0xffffffff, ZPixmap);
+ if (!xi)
+ return FALSE;
+
+ if (mask) {
+ xm = XGetImage(ob_display, mask, 0, 0, mw, mh, 0xffffffff, ZPixmap);
+ if (!xm)
+ return FALSE;
+ }
+
+ *data = g_new(pixel32, pw * ph);
+ increase_depth(*data, xi);
+
+ if (mask) {
+ /* apply transparency from the mask */
+ di = 0;
+ for (i = 0, y = 0; y < ph; ++y) {
+ for (x = 0; x < pw; ++x, ++i) {
+ if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
+ (*data)[i] &= ~(0xff << default_alpha_offset);
+ }
+ di += xm->bytes_per_line;
+ }
+ }
+
+ *w = pw;
+ *h = ph;
+
+ return TRUE;
+}