Bug 1158323 - Make sure we set a base rect on document elements that have margins set. r=tn

This commit is contained in:
Kartikaya Gupta 2015-04-29 07:22:27 -04:00
parent dc74cd2fb0
commit ca4c4fda69
2 changed files with 10 additions and 0 deletions

View File

@ -59,6 +59,8 @@ ChromeProcessController::InitializeRoot()
uint32_t presShellId;
FrameMetrics::ViewID viewId;
if (APZCCallbackHelper::GetOrCreateScrollIdentifiers(content, &presShellId, &viewId)) {
// Note that the base rect that goes with these margins is set in
// nsRootBoxFrame::BuildDisplayList.
nsLayoutUtils::SetDisplayPortMargins(content, presShell, ScreenMargin(), 0,
nsLayoutUtils::RepaintMode::DoNotRepaint);
}

View File

@ -179,6 +179,14 @@ nsRootBoxFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
if (mContent && mContent->GetProperty(nsGkAtoms::DisplayPortMargins)) {
// The XUL document's root element may have displayport margins set in
// ChromeProcessController::InitializeRoot, and we should to supply the
// base rect.
nsRect displayPortBase = aDirtyRect.Intersect(nsRect(nsPoint(0, 0), GetSize()));
nsLayoutUtils::SetDisplayPortBase(mContent, displayPortBase);
}
// root boxes don't need a debug border/outline or a selection overlay...
// They *may* have a background propagated to them, so force creation
// of a background display list element.