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Fixes for bug #2552 and bug #10961

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git-svn-id: svn://10.0.0.236/trunk@49106 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
troy%netscape.com
1999-09-26 20:40:29 +00:00
parent 73049f4edd
commit e5689ac462
6 changed files with 296 additions and 72 deletions
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48
mozilla/layout/html/base/src/nsHTMLContainerFrame.cpp
View File

@@ -387,7 +387,7 @@ nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext& aPresContext,
view->Init(viewManager, bounds, parentView);
// If the frame has a fixed background attachment, then indicate that the
// view's contents should repainted and not bitblt'd
// view's contents should be repainted and not bitblt'd
if (fixedBackgroundAttachment) {
PRUint32 viewFlags;
view->GetViewFlags(&viewFlags);
@@ -403,13 +403,45 @@ nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext& aPresContext,
viewManager->InsertChild(parentView, view, zIndex);
}
// If the background color is transparent or the visibility is hidden,
// then mark the view as having transparent content. The reason we
// need to do it for hidden visibility is that child elements can
// override their parent's visibility and be visible.
if ((NS_STYLE_BG_COLOR_TRANSPARENT & color->mBackgroundFlags) ||
(NS_STYLE_VISIBILITY_HIDDEN == display->mVisible)) {
viewManager->SetViewContentTransparency(view, PR_TRUE);
// See if the view should be hidden
PRBool viewIsVisible = PR_TRUE;
PRBool viewHasTransparentContent = (color->mBackgroundFlags &
NS_STYLE_BG_COLOR_TRANSPARENT) == NS_STYLE_BG_COLOR_TRANSPARENT;
if (NS_STYLE_VISIBILITY_HIDDEN == display->mVisible) {
// If it's a container element, then leave the view visible, but
// mark it as having transparent content. The reason we need to
// do this is that child elements can override their parent's
// hidden visibility and be visible anyway
nsIContent* content;
// Because this function is called before processing the content
// object's child elements, we can't tell if it's a leaf by looking
// at whether the frame has any child frames
aFrame->GetContent(&content);
if (content) {
PRBool isContainer;
content->CanContainChildren(isContainer);
if (isContainer) {
// The view needs to be visible, but marked as having transparent
// content
viewHasTransparentContent = PR_TRUE;
} else {
// Go ahead and hide the view
viewIsVisible = PR_FALSE;
}
NS_RELEASE(content);
}
}
if (viewIsVisible) {
if (viewHasTransparentContent) {
viewManager->SetViewContentTransparency(view, PR_TRUE);
}
} else {
view->SetVisibility(nsViewVisibility_kHide);
}
// XXX If it's fixed positioned, then create a widget so it floats