Issue #1355 - Store the dirty rect on the display list builder rather than passing it as a parameter to BuildDisplayList

Also fix build bustage for De-unified layout/xul in nsRootBoxFrame.cpp

1 files changed, 32 insertions, 33 deletions

diff --git a/layout/generic/nsFrame.cpp b/layout/generic/nsFrame.cpp
index 024cc39bda..66f655f653 100644
--- a/layout/generic/nsFrame.cpp
+++ b/layout/generic/nsFrame.cpp
@@ -1813,7 +1813,7 @@ nsFrame::DisplayOutline(nsDisplayListBuilder*   aBuilder,
 
 void
 nsIFrame::DisplayCaret(nsDisplayListBuilder* aBuilder,
-                       const nsRect& aDirtyRect, nsDisplayList* aList)
+                       nsDisplayList* aList)
 {
   if (!IsVisibleForPainting(aBuilder))
     return;
@@ -2072,13 +2072,12 @@ ItemParticipatesIn3DContext(nsIFrame* aAncestor, nsDisplayItem* aItem)
 
 static void
 WrapSeparatorTransform(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
-                       nsRect& aDirtyRect,
                        nsDisplayList* aSource, nsDisplayList* aTarget,
                        int aIndex) {
   if (!aSource->IsEmpty()) {
     nsDisplayTransform *sepIdItem =
       new (aBuilder) nsDisplayTransform(aBuilder, aFrame, aSource,
-                                        aDirtyRect, Matrix4x4(), aIndex);
+                                        aBuilder->GetDirtyRect(), Matrix4x4(), aIndex);
     sepIdItem->SetNoExtendContext();
     aTarget->AppendToTop(sepIdItem);
   }
@@ -2086,7 +2085,6 @@ WrapSeparatorTransform(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
 
 void
 nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
-                                             const nsRect&         aDirtyRect,
                                              nsDisplayList*        aList) {
   if (GetStateBits() & NS_FRAME_TOO_DEEP_IN_FRAME_TREE)
     return;
@@ -2130,13 +2128,13 @@ nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
     autoPreserves3DContext.emplace(aBuilder);
     // Save dirty rect on the builder to avoid being distorted for
     // multiple transforms along the chain.
-    aBuilder->SetPreserves3DDirtyRect(aDirtyRect);
+    aBuilder->SavePreserves3DRects();
   }
 
   // For preserves3d, use the dirty rect already installed on the
   // builder, since aDirtyRect maybe distorted for transforms along
   // the chain.
-  nsRect dirtyRect = aDirtyRect;
+  nsRect dirtyRect = aBuilder->GetDirtyRect();
 
   bool inTransform = aBuilder->IsInTransform();
   bool isTransformed = IsTransformed();
@@ -2161,7 +2159,7 @@ nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
       // If we're in preserve-3d then grab the dirty rect that was given to the root
       // and transform using the combined transform.
       if (Combines3DTransformWithAncestors()) {
-        dirtyRect = aBuilder->GetPreserves3DDirtyRect(this);
+        dirtyRect = aBuilder->GetPreserves3DRects();
       }
 
       nsRect untransformedDirtyRect;
@@ -2281,7 +2279,7 @@ nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
 
     Maybe<nsRect> clipPropClip = GetClipPropClipRect(disp, effects, GetSize());
     if (clipPropClip) {
-      dirtyRect.IntersectRect(dirtyRect, *clipPropClip);
+      aBuilder->IntersectDirtyRect(*clipPropClip);
       nestedClipState.ClipContentDescendants(
         *clipPropClip + aBuilder->ToReferenceFrame(this));
     }
@@ -2294,7 +2292,7 @@ nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
       aBuilder->MarkPreserve3DFramesForDisplayList(this);
     }
 
-    MarkAbsoluteFramesForDisplayList(aBuilder, dirtyRect);
+    MarkAbsoluteFramesForDisplayList(aBuilder);
 
     nsDisplayLayerEventRegions* eventRegions = nullptr;
     if (aBuilder->IsBuildingLayerEventRegions()) {
@@ -2303,7 +2301,7 @@ nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
       aBuilder->SetLayerEventRegions(eventRegions);
     }
     aBuilder->AdjustWindowDraggingRegion(this);
-    BuildDisplayList(aBuilder, dirtyRect, set);
+    BuildDisplayList(aBuilder, set);
     if (eventRegions) {
       // If the event regions item ended up empty, throw it away rather than
       // adding it to the display list.
@@ -2409,7 +2407,7 @@ nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
       clipState.ExitStackingContextContents(&containerItemScrollClip);
     }
     // Revert to the post-filter dirty rect.
-    buildingDisplayList.SetDirtyRect(dirtyRectOutsideSVGEffects);
+    aBuilder->SetDirtyRect(dirtyRectOutsideSVGEffects);
 
     // Skip all filter effects while generating glyph mask.
     if (usingFilter && !aBuilder->IsForGenerateGlyphMask()) {
@@ -2474,8 +2472,7 @@ nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
     while (nsDisplayItem* item = resultList.RemoveBottom()) {
       if (ItemParticipatesIn3DContext(this, item) && !item->GetClip().HasClip()) {
         // The frame of this item participates the same 3D context.
-        WrapSeparatorTransform(aBuilder, this, dirtyRect,
-                               &nonparticipants, &participants, index++);
+        WrapSeparatorTransform(aBuilder, this, &nonparticipants, &participants, index++);
         participants.AppendToTop(item);
       } else {
         // The frame of the item doesn't participate the current
@@ -2488,8 +2485,7 @@ nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
         nonparticipants.AppendToTop(item);
       }
     }
-    WrapSeparatorTransform(aBuilder, this, dirtyRect,
-                           &nonparticipants, &participants, index++);
+    WrapSeparatorTransform(aBuilder, this, &nonparticipants, &participants, index++);
     resultList.AppendToTop(&participants);
   }
 
@@ -2500,7 +2496,7 @@ nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
     }
     // Revert to the dirtyrect coming in from the parent, without our transform
     // taken into account.
-    buildingDisplayList.SetDirtyRect(dirtyRectOutsideTransform);
+    aBuilder->SetDirtyRect(dirtyRectOutsideTransform);
     // Revert to the outer reference frame and offset because all display
     // items we create from now on are outside the transform.
     nsPoint toOuterReferenceFrame;
@@ -2604,7 +2600,6 @@ WrapInWrapList(nsDisplayListBuilder* aBuilder,
 void
 nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder*   aBuilder,
                                    nsIFrame*               aChild,
-                                   const nsRect&           aDirtyRect,
                                    const nsDisplayListSet& aLists,
                                    uint32_t                aFlags) {
   // If painting is restricted to just the background of the top level frame,
@@ -2637,12 +2632,15 @@ nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder*   aBuilder,
     pseudoStackingContext = true;
   }
 
-  // dirty rect in child-relative coordinates
-  nsRect dirty = aDirtyRect - child->GetOffsetTo(this);
-
   nsIAtom* childType = child->GetType();
   nsDisplayListBuilder::OutOfFlowDisplayData* savedOutOfFlowData = nullptr;
   bool isPlaceholder = false;
+
+  // dirty rect in child-relative coordinates
+  NS_ASSERTION(aBuilder->GetCurrentFrame() == this, "Wrong coord space!");
+  nsPoint offset = child->GetOffsetTo(this);
+  nsRect dirty = aBuilder->GetDirtyRect() - offset;
+
   if (childType == nsGkAtoms::placeholderFrame) {
     isPlaceholder = true;
     nsPlaceholderFrame* placeholder = static_cast<nsPlaceholderFrame*>(child);
@@ -2710,8 +2708,9 @@ nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder*   aBuilder,
         (shell->IgnoringViewportScrolling() && child == shell->GetRootScrollFrame());
     if (!keepDescending) {
       nsRect childDirty;
-      if (!childDirty.IntersectRect(dirty, child->GetVisualOverflowRect()))
+      if (!childDirty.IntersectRect(dirty, child->GetVisualOverflowRect())) {
         return;
+      }
       // Usually we could set dirty to childDirty now but there's no
       // benefit, and it can be confusing. It can especially confuse
       // situations where we're going to ignore a scrollframe's clipping;
@@ -2771,6 +2770,7 @@ nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder*   aBuilder,
 
   nsDisplayListBuilder::AutoBuildingDisplayList
     buildingForChild(aBuilder, child, dirty, pseudoStackingContext);
+
   DisplayListClipState::AutoClipMultiple clipState(aBuilder);
   CheckForApzAwareEventHandlers(aBuilder, child);
 
@@ -2783,7 +2783,7 @@ nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder*   aBuilder,
       savedOutOfFlowData->mContainingBlockScrollClip);
   } else if (GetStateBits() & NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO &&
              isPlaceholder) {
-    NS_ASSERTION(dirty.IsEmpty(), "should have empty dirty rect");
+    NS_ASSERTION(dirty.IsEmpty(), "should have empty visible rect");
     // Every item we build from now until we descent into an out of flow that
     // does have saved out of flow data should be invisible. This state gets
     // restored when AutoBuildingDisplayList gets out of scope.
@@ -2819,18 +2819,18 @@ nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder*   aBuilder,
     // True stacking context.
     // For stacking contexts, BuildDisplayListForStackingContext handles
     // clipping and MarkAbsoluteFramesForDisplayList.
-    child->BuildDisplayListForStackingContext(aBuilder, dirty, &list);
-    aBuilder->DisplayCaret(child, dirty, &list);
+    child->BuildDisplayListForStackingContext(aBuilder, &list);
+    aBuilder->DisplayCaret(child, &list);
   } else {
     Maybe<nsRect> clipPropClip =
       child->GetClipPropClipRect(disp, effects, child->GetSize());
     if (clipPropClip) {
-      dirty.IntersectRect(dirty, *clipPropClip);
+      aBuilder->IntersectDirtyRect(*clipPropClip);
       clipState.ClipContentDescendants(
         *clipPropClip + aBuilder->ToReferenceFrame(child));
     }
 
-    child->MarkAbsoluteFramesForDisplayList(aBuilder, dirty);
+    child->MarkAbsoluteFramesForDisplayList(aBuilder);
 
     if (aBuilder->IsBuildingLayerEventRegions()) {
       // If this frame has a different animated geometry root than its parent,
@@ -2862,8 +2862,8 @@ nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder*   aBuilder,
       // return early.
 
       aBuilder->AdjustWindowDraggingRegion(child);
-      child->BuildDisplayList(aBuilder, dirty, aLists);
-      aBuilder->DisplayCaret(child, dirty, aLists.Content());
+      child->BuildDisplayList(aBuilder, aLists);
+      aBuilder->DisplayCaret(child, aLists.Content());
 #ifdef DEBUG
       DisplayDebugBorders(aBuilder, child, aLists);
 #endif
@@ -2876,8 +2876,8 @@ nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder*   aBuilder,
     // z-index:non-auto
     nsDisplayListCollection pseudoStack;
     aBuilder->AdjustWindowDraggingRegion(child);
-    child->BuildDisplayList(aBuilder, dirty, pseudoStack);
-    aBuilder->DisplayCaret(child, dirty, pseudoStack.Content());
+    child->BuildDisplayList(aBuilder, pseudoStack);
+    aBuilder->DisplayCaret(child, pseudoStack.Content());
 
     list.AppendToTop(pseudoStack.BorderBackground());
     list.AppendToTop(pseudoStack.BlockBorderBackgrounds());
@@ -2927,11 +2927,10 @@ nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder*   aBuilder,
 }
 
 void
-nsIFrame::MarkAbsoluteFramesForDisplayList(nsDisplayListBuilder* aBuilder,
-                                           const nsRect& aDirtyRect)
+nsIFrame::MarkAbsoluteFramesForDisplayList(nsDisplayListBuilder* aBuilder)
 {
   if (IsAbsoluteContainer()) {
-    aBuilder->MarkFramesForDisplayList(this, GetAbsoluteContainingBlock()->GetChildList(), aDirtyRect);
+    aBuilder->MarkFramesForDisplayList(this, GetAbsoluteContainingBlock()->GetChildList());
   }
 }