Merge branch 'master' of https://github.com/MoonchildProductions/UXP

1 files changed, 9 insertions, 6 deletions

diff --git a/layout/generic/nsSimplePageSequenceFrame.cpp b/layout/generic/nsSimplePageSequenceFrame.cpp
index 2e74afc3b..6dcb6ccc1 100644
--- a/layout/generic/nsSimplePageSequenceFrame.cpp
+++ b/layout/generic/nsSimplePageSequenceFrame.cpp
@@ -808,7 +808,6 @@ ComputePageSequenceTransform(nsIFrame* aFrame, float aAppUnitsPerPixel)
 
 void
 nsSimplePageSequenceFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
-                                            const nsRect&           aDirtyRect,
                                             const nsDisplayListSet& aLists)
 {
   DisplayBorderBackgroundOutline(aBuilder, aLists);
@@ -822,13 +821,17 @@ nsSimplePageSequenceFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
     clipState.Clear();
 
     nsIFrame* child = PrincipalChildList().FirstChild();
-    nsRect dirty = aDirtyRect;
-    dirty.ScaleInverseRoundOut(PresContext()->GetPrintPreviewScale());
+    nsRect visible = aBuilder->GetVisibleRect();
+    visible.ScaleInverseRoundOut(PresContext()->GetPrintPreviewScale());
 
     while (child) {
-      if (child->GetVisualOverflowRectRelativeToParent().Intersects(dirty)) {
-        child->BuildDisplayListForStackingContext(aBuilder,
-            dirty - child->GetPosition(), &content);
+      if (child->GetVisualOverflowRectRelativeToParent().Intersects(visible)) {
+        nsDisplayListBuilder::AutoBuildingDisplayList
+          buildingForChild(aBuilder, child,
+                           visible - child->GetPosition(),
+                           visible - child->GetPosition(),
+                           aBuilder->IsAtRootOfPseudoStackingContext());
+        child->BuildDisplayListForStackingContext(aBuilder, &content);
         aBuilder->ResetMarkedFramesForDisplayList();
       }
       child = child->GetNextSibling();