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added marking a ViewLayer dirty (ie if background needs to be cleared yet)

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15626 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus 2005-12-20 22:31:42 +00:00
parent a07317fc10
commit 3c0e5f8e8b
2 changed files with 18 additions and 1 deletions
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14
src/servers/app/ViewLayer.cpp
View File

@ -44,6 +44,7 @@ ViewLayer::ViewLayer(BRect frame, const char* name,
// ViewLayers start visible by default
fHidden(false),
fVisible(true),
fBackgroundDirty(true),
fEventMask(0),
fEventOptions(0),
@ -845,11 +846,13 @@ ViewLayer::Draw(DrawingEngine* drawingEngine, BRegion* effectiveClipping,
drawingEngine->FillRegion(redraw, fViewColor);
}
fBackgroundDirty = false;
// let children draw
if (deep) {
// before passing the clipping on to children, exclude our
// own region from the available clipping
effectiveClipping->Exclude(&ScreenClipping(windowContentClipping));
effectiveClipping->Exclude(&fScreenClipping);
for (ViewLayer* child = FirstChild(); child; child = child->NextSibling()) {
child->Draw(drawingEngine, effectiveClipping,
@ -907,6 +910,15 @@ ViewLayer::UpdateVisibleDeep(bool parentVisible)
child->UpdateVisibleDeep(fVisible);
}
// MarkBackgroundDirty
void
ViewLayer::MarkBackgroundDirty()
{
fBackgroundDirty = true;
for (ViewLayer* child = FirstChild(); child; child = child->NextSibling())
child->MarkBackgroundDirty();
}
// PrintToStream
void
ViewLayer::PrintToStream() const

5
src/servers/app/ViewLayer.h
View File

@ -160,6 +160,10 @@ class ViewLayer {
// according to the parents visibility
void UpdateVisibleDeep(bool parentVisible);
void MarkBackgroundDirty();
bool IsBackgroundDirty() const
{ return fBackgroundDirty; }
// clipping
void RebuildClipping(bool deep);
BRegion& ScreenClipping(BRegion* windowContentClipping,
@ -189,6 +193,7 @@ class ViewLayer {
uint32 fFlags;
bool fHidden;
bool fVisible;
bool fBackgroundDirty;
uint32 fEventMask;
uint32 fEventOptions;