1 files changed, 94 insertions, 0 deletions
diff --git a/gfx/layers/composite/PaintedLayerComposite.h b/gfx/layers/composite/PaintedLayerComposite.h
new file mode 100644
index 000000000..45a89eccf
--- /dev/null
+++ b/gfx/layers/composite/PaintedLayerComposite.h
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GFX_PaintedLayerComposite_H
+#define GFX_PaintedLayerComposite_H
+
+#include "Layers.h"                     // for Layer (ptr only), etc
+#include "mozilla/gfx/Rect.h"
+#include "mozilla/Attributes.h"         // for override
+#include "mozilla/RefPtr.h"             // for RefPtr
+#include "mozilla/layers/LayerManagerComposite.h"  // for LayerComposite, etc
+#include "mozilla/layers/LayersTypes.h"  // for LayerRenderState, etc
+#include "nsDebug.h"                    // for NS_RUNTIMEABORT
+#include "nsRegion.h"                   // for nsIntRegion
+#include "nscore.h"                     // for nsACString
+
+
+namespace mozilla {
+namespace layers {
+
+/**
+ * PaintedLayers use ContentHosts for their compsositable host.
+ * By using different ContentHosts, PaintedLayerComposite support tiled and
+ * non-tiled PaintedLayers and single or double buffering.
+ */
+
+class CompositableHost;
+class ContentHost;
+
+class PaintedLayerComposite : public PaintedLayer,
+                              public LayerComposite
+{
+public:
+  explicit PaintedLayerComposite(LayerManagerComposite *aManager);
+
+protected:
+  virtual ~PaintedLayerComposite();
+
+public:
+  virtual void Disconnect() override;
+
+  virtual LayerRenderState GetRenderState() override;
+
+  CompositableHost* GetCompositableHost() override;
+
+  virtual void Destroy() override;
+
+  virtual Layer* GetLayer() override;
+
+  virtual void SetLayerManager(LayerManagerComposite* aManager) override;
+
+  virtual void RenderLayer(const gfx::IntRect& aClipRect) override;
+
+  virtual void CleanupResources() override;
+
+  virtual void GenEffectChain(EffectChain& aEffect) override;
+
+  virtual bool SetCompositableHost(CompositableHost* aHost) override;
+
+  virtual LayerComposite* AsLayerComposite() override { return this; }
+
+  virtual void InvalidateRegion(const nsIntRegion& aRegion) override
+  {
+    NS_RUNTIMEABORT("PaintedLayerComposites can't fill invalidated regions");
+  }
+
+  void SetValidRegion(const nsIntRegion& aRegion)
+  {
+    MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) ValidRegion", this));
+    mValidRegion = aRegion;
+    Mutated();
+  }
+
+  const virtual gfx::TiledIntRegion& GetInvalidRegion() override;
+
+  MOZ_LAYER_DECL_NAME("PaintedLayerComposite", TYPE_PAINTED)
+
+protected:
+
+  virtual void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
+
+private:
+  gfx::SamplingFilter GetSamplingFilter() { return gfx::SamplingFilter::LINEAR; }
+
+private:
+  RefPtr<ContentHost> mBuffer;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif /* GFX_PaintedLayerComposite_H */