/**
* Translate coordinates from one window into another. Optimized for XAWT - uses cached data when
* possible. Preferable over pure XTranslateCoordinates.
*
* @return coordinates relative to dst, or null if error happened
*/
static Point toOtherWindow(long src, long dst, int x, int y) {
Point rpt = new Point(0, 0);
// Check if both windows belong to XAWT - then no X calls are necessary
XBaseWindow srcPeer = XToolkit.windowToXWindow(src);
XBaseWindow dstPeer = XToolkit.windowToXWindow(dst);
if (srcPeer != null && dstPeer != null) {
// (x, y) is relative to src
rpt.x = x + srcPeer.getAbsoluteX() - dstPeer.getAbsoluteX();
rpt.y = y + srcPeer.getAbsoluteY() - dstPeer.getAbsoluteY();
} else if (dstPeer != null && XlibUtil.isRoot(src, dstPeer.getScreenNumber())) {
// from root into peer
rpt.x = x - dstPeer.getAbsoluteX();
rpt.y = y - dstPeer.getAbsoluteY();
} else if (srcPeer != null && XlibUtil.isRoot(dst, srcPeer.getScreenNumber())) {
// from peer into root
rpt.x = x + srcPeer.getAbsoluteX();
rpt.y = y + srcPeer.getAbsoluteY();
} else {
rpt = XlibUtil.translateCoordinates(src, dst, new Point(x, y));
}
return rpt;
}
