Bug 1384043 - Support solid color for layers free mode. r=mattwoodrow

MozReview-Commit-ID: H4YWgdl1yAV

--HG--
extra : rebase_source : ea2920a5b25c2fde2950af189c7245c90d370934

layout/painting/nsDisplayList.cpp

@@ -2892,6 +2892,31 @@ nsDisplaySolidColor::WriteDebugInfo(std::stringstream& aStream)
           << (int)NS_GET_A(mColor) << ")";
 }
 
+bool
+nsDisplaySolidColor::CreateWebRenderCommands(mozilla::wr::DisplayListBuilder& aBuilder,
+                                             const StackingContextHelper& aSc,
+                                             nsTArray<WebRenderParentCommand>& aParentCommands,
+                                             mozilla::layers::WebRenderLayerManager* aManager,
+                                             nsDisplayListBuilder* aDisplayListBuilder)
+{
+  if (aManager->IsLayersFreeTransaction()) {
+    ContainerLayerParameters parameter;
+    if (GetLayerState(aDisplayListBuilder, aManager, parameter) != LAYER_ACTIVE) {
+      return false;
+    }
+  }
+
+  LayoutDeviceRect bounds = LayoutDeviceRect::FromAppUnits(
+        mVisibleRect, mFrame->PresContext()->AppUnitsPerDevPixel());
+  wr::LayoutRect transformedRect = aSc.ToRelativeLayoutRect(bounds);
+
+  aBuilder.PushRect(transformedRect,
+                    transformedRect,
+                    wr::ToColorF(ToDeviceColor(mColor)));
+
+  return true;
+}
+
 nsRect
 nsDisplaySolidColorRegion::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
 {

layout/painting/nsDisplayList.h

@@ -3004,6 +3004,12 @@ public:
 
   virtual void WriteDebugInfo(std::stringstream& aStream) override;
 
+  virtual bool CreateWebRenderCommands(mozilla::wr::DisplayListBuilder& aBuilder,
+                                       const StackingContextHelper& aSc,
+                                       nsTArray<WebRenderParentCommand>& aParentCommands,
+                                       mozilla::layers::WebRenderLayerManager* aManager,
+                                       nsDisplayListBuilder* aDisplayListBuilder) override;
+
   NS_DISPLAY_DECL_NAME("SolidColor", TYPE_SOLID_COLOR)
 
 private: