/**
* Make the union of two regions.
* @param dest The destination region.
* @param source1 The first source region.
* @param source2 The second source region.
*
* Replace the contents of @p dest with the union of @p source1 and
* @p source2.
* @ingroup Ecore_X_Fixes_Group
*/
EAPI void
ecore_x_region_combine(Ecore_X_Region dest,
Ecore_X_Region source1,
Ecore_X_Region source2)
{
LOGFN(__FILE__, __LINE__, __FUNCTION__);
CHECK_XCB_CONN;
if (!_xfixes_avail) return;
#ifdef ECORE_XCB_XFIXES
xcb_xfixes_union_region(_ecore_xcb_conn, source1, source2, dest);
// ecore_x_flush();
#endif
}
/** Add the given Region to the damaged Region by either copying it if
* the global Damaged is currently empty or adding it otherwise
*
* @todo: Perhaps the copy of the region could be avoided if it
* really impacts on performances, but for now this does not
* seem to be an issue
*
* \param region Damaged Region to be added to the global one
*/
void
display_add_damaged_region(xcb_xfixes_region_t *region,
bool do_destroy_region)
{
if(!*region)
return;
if(globalconf.damaged)
{
xcb_xfixes_union_region(globalconf.connection, globalconf.damaged,
*region, globalconf.damaged);
debug("Added %x to damaged region %x", *region, globalconf.damaged);
if(do_destroy_region)
xcb_xfixes_destroy_region(globalconf.connection, *region);
}
else
{
/* If the region should not be destroyed, then copy the given
Region as it is generally the Window Region and can still be
used later on whereas the damaged Region is cleared at each
painting iteration */
if(!do_destroy_region)
{
globalconf.damaged = xcb_generate_id(globalconf.connection);
xcb_xfixes_create_region(globalconf.connection,
globalconf.damaged,
0, NULL);
xcb_xfixes_copy_region(globalconf.connection, *region,
globalconf.damaged);
}
else
globalconf.damaged = *region;
debug("Initialized damaged region to %x (copied: %d)",
globalconf.damaged, !do_destroy_region);
}
if(do_destroy_region)
*region = XCB_NONE;
}
