Bug 1220629 - Part 6: Implement PushLayer/PopLayer API in several wrapper DT types. r=jrmuizel

--HG--
extra : rebase_source : 5a421568fa20b23d7ceef71eb58014e29dbc1c76

gfx/2d/DrawTargetD2D1.cpp

@@ -776,6 +776,9 @@ DrawTargetD2D1::PushLayer(bool aOpaque, Float aOpacity, SourceSurface* aMask,
   PushedLayer pushedLayer;
   pushedLayer.mClipsArePushed = false;
   pushedLayer.mIsOpaque = aOpaque;
+  pushedLayer.mOldPermitSubpixelAA = mPermitSubpixelAA;
+  mPermitSubpixelAA = aOpaque;
+
   mDC->CreateCommandList(getter_AddRefs(pushedLayer.mCurrentList));
   mPushedLayers.push_back(pushedLayer);
 
@@ -788,6 +791,8 @@ DrawTargetD2D1::PopLayer()
   MOZ_ASSERT(CurrentLayer().mPushedClips.size() == 0);
 
   RefPtr<ID2D1CommandList> list = CurrentLayer().mCurrentList;
+  mPermitSubpixelAA = CurrentLayer().mOldPermitSubpixelAA;
+
   mPushedLayers.pop_back();
   mDC->SetTarget(CurrentTarget());
 

gfx/2d/DrawTargetD2D1.h

@@ -243,13 +243,14 @@ private:
   // List of pushed layers.
   struct PushedLayer
   {
-    PushedLayer() : mClipsArePushed(false), mIsOpaque(false) {}
+    PushedLayer() : mClipsArePushed(false), mIsOpaque(false), mOldPermitSubpixelAA(false) {}
 
     std::vector<PushedClip> mPushedClips;
     RefPtr<ID2D1CommandList> mCurrentList;
     // True if the current clip stack is pushed to the CurrentTarget().
     bool mClipsArePushed;
     bool mIsOpaque;
+    bool mOldPermitSubpixelAA;
   };
   std::vector<PushedLayer> mPushedLayers;
   PushedLayer& CurrentLayer()

gfx/2d/DrawTargetDual.cpp

@@ -15,6 +15,11 @@ class DualSurface
 public:
   inline explicit DualSurface(SourceSurface *aSurface)
   {
+    if (!aSurface) {
+      mA = mB = nullptr;
+      return;
+    }
+
     if (aSurface->GetType() != SurfaceType::DUAL_DT) {
       mA = mB = aSurface;
       return;
@@ -181,6 +186,16 @@ DrawTargetDual::Mask(const Pattern &aSource, const Pattern &aMask, const DrawOpt
   mB->Mask(*source.mB, *mask.mB, aOptions);
 }
 
+void
+DrawTargetDual::PushLayer(bool aOpaque, Float aOpacity, SourceSurface* aMask,
+                          const Matrix& aMaskTransform, const IntRect& aBounds,
+                          bool aCopyBackground)
+{
+  DualSurface mask(aMask);
+  mA->PushLayer(aOpaque, aOpacity, mask.mA, aMaskTransform, aBounds, aCopyBackground);
+  mB->PushLayer(aOpaque, aOpacity, mask.mB, aMaskTransform, aBounds, aCopyBackground);
+}
+
 already_AddRefed<DrawTarget>
 DrawTargetDual::CreateSimilarDrawTarget(const IntSize &aSize, SurfaceFormat aFormat) const
 {

gfx/2d/DrawTargetDual.h

@@ -54,6 +54,7 @@ public:
   FORWARD_FUNCTION1(PushClip, const Path *, aPath)
   FORWARD_FUNCTION1(PushClipRect, const Rect &, aRect)
   FORWARD_FUNCTION(PopClip)
+  FORWARD_FUNCTION(PopLayer)
   FORWARD_FUNCTION1(ClearRect, const Rect &, aRect)
 
   virtual void SetTransform(const Matrix &aTransform) override {
@@ -105,6 +106,12 @@ public:
   
   virtual void Mask(const Pattern &aSource, const Pattern &aMask, const DrawOptions &aOptions) override;
 
+  virtual void PushLayer(bool aOpaque, Float aOpacity,
+                         SourceSurface* aMask,
+                         const Matrix& aMaskTransform,
+                         const IntRect& aBounds = IntRect(),
+                         bool aCopyBackground = false) override;
+
   virtual already_AddRefed<SourceSurface>
     CreateSourceSurfaceFromData(unsigned char *aData,
                                 const IntSize &aSize,
@@ -156,6 +163,8 @@ public:
     return true;
   }
 
+  virtual bool IsCurrentGroupOpaque() override { return mA->IsCurrentGroupOpaque(); }
+     
 private:
   RefPtr<DrawTarget> mA;
   RefPtr<DrawTarget> mB;

gfx/2d/DrawTargetTiled.cpp

@@ -305,5 +305,29 @@ DrawTargetTiled::Fill(const Path* aPath, const Pattern& aPattern, const DrawOpti
   }
 }
 
+void
+DrawTargetTiled::PushLayer(bool aOpaque, Float aOpacity, SourceSurface* aMask,
+                           const Matrix& aMaskTransform, const IntRect& aBounds,
+                           bool aCopyBackground)
+{
+  // XXX - not sure this is what we want or whether we want to continue drawing to a larger
+  // intermediate surface, that would require tweaking the code in here a little though.
+  for (size_t i = 0; i < mTiles.size(); i++) {
+    IntRect bounds = aBounds;
+    bounds.MoveBy(-mTiles[i].mTileOrigin);
+    mTiles[i].mDrawTarget->PushLayer(aOpaque, aOpacity, aMask, aMaskTransform, aBounds);
+  }
+}
+
+void
+DrawTargetTiled::PopLayer()
+{
+  // XXX - not sure this is what we want or whether we want to continue drawing to a larger
+  // intermediate surface, that would require tweaking the code in here a little though.
+  for (size_t i = 0; i < mTiles.size(); i++) {
+    mTiles[i].mDrawTarget->PopLayer();
+  }
+}
+
 } // namespace gfx
 } // namespace mozilla

gfx/2d/DrawTargetTiled.h

@@ -103,6 +103,13 @@ public:
   virtual void PushClip(const Path *aPath) override;
   virtual void PushClipRect(const Rect &aRect) override;
   virtual void PopClip() override;
+  virtual void PushLayer(bool aOpaque, Float aOpacity,
+                         SourceSurface* aMask,
+                         const Matrix& aMaskTransform,
+                         const IntRect& aBounds = IntRect(),
+                         bool aCopyBackground = false) override;
+  virtual void PopLayer() override;
+
 
   virtual void SetTransform(const Matrix &aTransform) override;