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Bug 113232. Support translucent chrome. Relanding, fingers crossed. r+sr=bzbarsky

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git-svn-id: svn://10.0.0.236/trunk@140762 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
roc+%cs.cmu.edu
2003-04-06 02:49:40 +00:00
parent 7cee142b29
commit c43b1f1f74
15 changed files with 898 additions and 263 deletions
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32
mozilla/layout/generic/nsContainerFrame.cpp
View File

@@ -37,6 +37,7 @@
* ***** END LICENSE BLOCK ***** */
#include "nsContainerFrame.h"
#include "nsIContent.h"
#include "nsIDocument.h"
#include "nsIPresContext.h"
#include "nsIRenderingContext.h"
#include "nsStyleContext.h"
@@ -558,15 +559,42 @@ SyncFrameViewGeometryDependentProperties(nsIPresContext* aPresContext,
(bg->mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT) ||
!aFrame->CanPaintBackground() ||
HasNonZeroBorderRadius(aStyleContext);
if (isCanvas && viewHasTransparentContent) {
if (isCanvas) {
nsIView* rootView;
vm->GetRootView(rootView);
nsIView* rootParent;
rootView->GetParent(rootParent);
if (nsnull == rootParent) {
if (!rootParent) {
// We're the root of a view manager hierarchy. We will have to
// paint something. NOTE: this can be overridden below.
viewHasTransparentContent = PR_FALSE;
}
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsCOMPtr<nsIDocument> doc;
shell->GetDocument(getter_AddRefs(doc));
if (doc) {
nsCOMPtr<nsIDocument> parentDoc;
doc->GetParentDocument(getter_AddRefs(parentDoc));
nsCOMPtr<nsIContent> rootElem;
doc->GetRootContent(getter_AddRefs(rootElem));
if (!parentDoc && rootElem && rootElem->IsContentOfType(nsIContent::eXUL)) {
// we're XUL at the root of the document hierarchy. Try to make our
// window translucent.
nsCOMPtr<nsIWidget> widget;
aView->GetWidget(*getter_AddRefs(widget));
// don't proceed unless this is the root view
// (sometimes the non-root-view is a canvas)
if (widget && aView == rootView) {
viewHasTransparentContent = hasBG && (bg->mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT);
widget->SetWindowTranslucency(viewHasTransparentContent);
}
}
}
}
// XXX we should also set widget transparency for XUL popups
const nsStyleDisplay* display;
::GetStyleData(aStyleContext, &display);