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the current clipping is the combined user defined clipping from all previous states

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14846 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus
2005-11-11 00:14:58 +00:00
parent d3b27f09af
commit 41f78f7884
1 changed files with 17 additions and 5 deletions
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src/servers/app/DrawState.cpp
+17 -5
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@@ -66,7 +66,10 @@ DrawState::operator=(const DrawState& from)
fScale = from.fScale; fScale = from.fScale;
if (from.fClippingRegion) { if (from.fClippingRegion) {
SetClippingRegion(*(from.fClippingRegion)); if (fClippingRegion)
*fClippingRegion = *from.fClippingRegion;
else
fClippingRegion = new BRegion(*from.fClippingRegion);
} else { } else {
delete fClippingRegion; delete fClippingRegion;
fClippingRegion = NULL; fClippingRegion = NULL;
@@ -302,15 +305,24 @@ DrawState::SetScale(float scale)
void void
DrawState::SetClippingRegion(const BRegion& region) DrawState::SetClippingRegion(const BRegion& region)
{ {
if (region.Frame().IsValid()) { // reset clipping to that of previous state
if (PreviousState() != NULL && PreviousState()->ClippingRegion()) {
if (fClippingRegion) if (fClippingRegion)
*fClippingRegion = region; *fClippingRegion = *(PreviousState()->ClippingRegion());
else else
fClippingRegion = new BRegion(region); fClippingRegion = new BRegion(*(PreviousState()->ClippingRegion()));
} else { } else {
delete fClippingRegion; delete fClippingRegion;
fClippingRegion = NULL; fClippingRegion = NULL;
} }
// add the clipping from the passed region
if (region.Frame().IsValid()) {
if (fClippingRegion)
fClippingRegion->IntersectWith(&region);
else
fClippingRegion = new BRegion(region);
}
} }