/* add region to window update region*/
BOOL WINAPI
InvalidateRgn(HWND hwnd, HRGN hrgn, BOOL bErase)
{
if(hwnd) {
if(!hrgn)
/* add client area to update region*/
return InvalidateRect(hwnd, NULL, bErase);
/* passed region is in client coords, convert to screen*/
GdOffsetRegion(((MWRGNOBJ *)hrgn)->rgn,
hwnd->clirect.left, hwnd->clirect.top);
GdUnionRegion(hwnd->update, hwnd->update,
((MWRGNOBJ *)hrgn)->rgn);
GdOffsetRegion(((MWRGNOBJ *)hrgn)->rgn,
-hwnd->clirect.left, -hwnd->clirect.top);
/* if update region not empty, mark as needing painting*/
if(hwnd->update->numRects != 0)
if(hwnd->gotPaintMsg == PAINT_PAINTED)
hwnd->gotPaintMsg = PAINT_NEEDSPAINT;
if( bErase )
hwnd->nEraseBkGnd++;
}
return TRUE;
}
/*
* Note: The behavior is correct even if src and dest regions are the same.
*/
INT WINAPI
CombineRgn(HRGN hDest, HRGN hSrc1, HRGN hSrc2, INT mode)
{
MWRGNOBJ *destObj = (MWRGNOBJ *) GDI_GetObjPtr( hDest, OBJ_REGION);
INT result = ERRORREGION;
/*TRACE(region, " %04x,%04x -> %04x mode=%x\n", hSrc1, hSrc2, hDest,mode);*/
if (destObj)
{
MWRGNOBJ *src1Obj = (MWRGNOBJ *) GDI_GetObjPtr( hSrc1, OBJ_REGION);
if (src1Obj)
{
/*TRACE(region, "dump:\n");
if(TRACE_ON(region))
REGION_DumpRegion(src1Obj->rgn);*/
if (mode == RGN_COPY)
{
GdCopyRegion( destObj->rgn, src1Obj->rgn );
result = destObj->rgn->type;
}
else
{
MWRGNOBJ *src2Obj = (MWRGNOBJ *) GDI_GetObjPtr( hSrc2, OBJ_REGION);
if (src2Obj)
{
/*TRACE(region, "dump:\n");
if(TRACE_ON(region))
REGION_DumpRegion(src2Obj->rgn);*/
switch (mode)
{
case RGN_AND:
GdIntersectRegion( destObj->rgn, src1Obj->rgn, src2Obj->rgn);
break;
case RGN_OR:
GdUnionRegion( destObj->rgn, src1Obj->rgn, src2Obj->rgn );
break;
case RGN_XOR:
GdXorRegion( destObj->rgn, src1Obj->rgn, src2Obj->rgn );
break;
case RGN_DIFF:
GdSubtractRegion( destObj->rgn, src1Obj->rgn, src2Obj->rgn );
break;
}
result = destObj->rgn->type;
}
}
}
/*TRACE(region, "dump:\n");
if(TRACE_ON(region))
REGION_DumpRegion(destObj->rgn);*/
}
return result;
}
