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* Use B_DRAW_ON_CHILDREN for the Desktop pose view. 

* Draw the selection rect in DrawAfterChildren().
* Call DrawAfterChildren() manually in Draw(), if B_DRAW_ON_CHILDREN is not set.

This change allows replicants, in case they want to be aware of being embedded
in the desktop, to use alpha blending to draw on top of the desktop pose view.
For replicants which do not care, this patch changes nothing. When views
with B_DRAW_ON_CHILDREN invalidate themselves, they will automatically trigger
an update of children that sit on top the invalidated area, at least with our
app_server. So this change works just like one would expect, ie like
compositing views. Of course it should have flickering when app_server does not
run in double buffered mode.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29759 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus 2009-03-28 19:30:39 +00:00
parent 2d1f2ca799
commit 0834dd807f
3 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/kits/tracker/DesktopPoseView.cpp
View File

@ -80,9 +80,9 @@ DesktopEntryListCollection::DesktopEntryListCollection()
// #pragma mark -
DesktopPoseView::DesktopPoseView(Model *model, BRect frame, uint32 viewMode,
uint32 resizeMask)
: BPoseView(model, frame, viewMode, resizeMask)
DesktopPoseView::DesktopPoseView(Model *model, BRect frame, uint32 resizeMask,
uint32 flags)
: BPoseView(model, frame, resizeMask, flags | B_DRAW_ON_CHILDREN)
{
SetWidgetTextOutline(true);
}

8
src/kits/tracker/PoseView.cpp
View File

@ -8101,6 +8101,14 @@ BPoseView::Draw(BRect updateRect)
}
DrawViewCommon(updateRect);
if ((Flags() & B_DRAW_ON_CHILDREN) == 0)
DrawAfterChildren(updateRect);
}
void
BPoseView::DrawAfterChildren(BRect updateRect)
{
if (fTransparentSelection && fSelectionRect.IsValid()) {
SetDrawingMode(B_OP_ALPHA);
SetHighColor(255, 255, 255, 128);

1
src/kits/tracker/PoseView.h
View File

@ -161,6 +161,7 @@ class BPoseView : public BView {
virtual void MakeFocus(bool = true);
virtual void MouseMoved(BPoint, uint32, const BMessage *);
virtual void Draw(BRect update_rect);
virtual void DrawAfterChildren(BRect update_rect);
virtual void MouseDown(BPoint where);
virtual void KeyDown(const char *, int32);
virtual void Pulse();