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manage view visibility better, hide collapsed views and hidden views with widgets

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This commit is contained in:
peterl@netscape.com
1999-09-29 03:37:02 +00:00
parent 3dcd60daa9
commit afedab4c16
6 changed files with 240 additions and 124 deletions
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62
layout/base/nsCSSFrameConstructor.cpp
View File

@@ -6441,26 +6441,60 @@ SyncAndInvalidateView(nsIView* aView, nsIFrame* aFrame,
aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) disp);
aViewManager->SetViewOpacity(aView, color->mOpacity);
PRBool viewVisible = (NS_STYLE_VISIBILITY_VISIBLE == disp->mVisible);
// XXX Troy, you need to hook in the leaf node logic here.
// XXX also need to set transparency in the view
if (! viewVisible) {
nsIView* parentView = nsnull;
aView->GetParent(parentView);
if (parentView) {
nsRect bounds;
aView->GetBounds(bounds);
aViewManager->UpdateView(parentView, bounds, NS_VMREFRESH_NO_SYNC);
// See if the view should be hidden or visible
PRBool viewIsVisible = PR_TRUE;
PRBool viewHasTransparentContent = (color->mBackgroundFlags &
NS_STYLE_BG_COLOR_TRANSPARENT) == NS_STYLE_BG_COLOR_TRANSPARENT;
if (NS_STYLE_VISIBILITY_COLLAPSE == disp->mVisible) {
viewIsVisible = PR_FALSE;
}
else if (NS_STYLE_VISIBILITY_HIDDEN == disp->mVisible) {
// If it has a widget, hide the view because the widget can't deal with it
nsIWidget* widget = nsnull;
aView->GetWidget(widget);
if (widget) {
viewIsVisible = PR_FALSE;
NS_RELEASE(widget);
}
else {
// XXX??? how to deal with this??? Do we even have to?
// If it's a scroll frame, then hide the view. This means that
// child elements can't override their parent's visibility, but
// it's not practical to leave it visible in all cases because
// the scrollbars will be showing
nsIAtom* frameType;
aFrame->GetFrameType(&frameType);
if (frameType == nsLayoutAtoms::scrollFrame) {
viewIsVisible = PR_FALSE;
} else {
// 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
nsIFrame* firstChild;
aFrame->FirstChild(nsnull, &firstChild);
if (firstChild) {
// It's not a left frame, so the view needs to be visible, but
// marked as having transparent content
viewHasTransparentContent = PR_TRUE;
} else {
// It's a leaf frame so go ahead and hide the view
viewIsVisible = PR_FALSE;
}
}
NS_IF_RELEASE(frameType);
}
aView->SetVisibility(nsViewVisibility_kHide);
}
if (viewIsVisible) {
aViewManager->SetViewContentTransparency(aView, viewHasTransparentContent);
aViewManager->SetViewVisibility(aView, nsViewVisibility_kShow);
}
else {
aView->SetVisibility(nsViewVisibility_kShow);
aViewManager->UpdateView(aView, nsnull, NS_VMREFRESH_NO_SYNC);
aViewManager->SetViewVisibility(aView, nsViewVisibility_kHide);
}
}