diff -r 000000000000 -r 6474c204b198 gfx/layers/ImageLayers.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/layers/ImageLayers.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,98 @@
+/* -*- 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_IMAGELAYER_H
+#define GFX_IMAGELAYER_H
+
+#include "Layers.h"                     // for Layer, etc
+#include "GraphicsFilter.h"             // for GraphicsFilter
+#include "mozilla/gfx/BaseSize.h"       // for BaseSize
+#include "mozilla/gfx/Point.h"          // for IntSize
+#include "mozilla/layers/LayersTypes.h"
+#include "nsAutoPtr.h"                  // for nsRefPtr
+#include "nscore.h"                     // for nsACString
+
+namespace mozilla {
+namespace layers {
+
+class ImageContainer;
+
+/**
+ * A Layer which renders an Image.
+ */
+class ImageLayer : public Layer {
+public:
+  /**
+   * CONSTRUCTION PHASE ONLY
+   * Set the ImageContainer. aContainer must have the same layer manager
+   * as this layer.
+   */
+  virtual void SetContainer(ImageContainer* aContainer);
+
+  /**
+   * CONSTRUCTION PHASE ONLY
+   * Set the filter used to resample this image if necessary.
+   */
+  void SetFilter(GraphicsFilter aFilter)
+  {
+    if (mFilter != aFilter) {
+      MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) Filter", this));
+      mFilter = aFilter;
+      Mutated();
+    }
+  }
+
+  /**
+   * CONSTRUCTION PHASE ONLY
+   * Set the size to scale the image to and the mode at which to scale.
+   */
+  void SetScaleToSize(const gfx::IntSize &aSize, ScaleMode aMode)
+  {
+    if (mScaleToSize != aSize || mScaleMode != aMode) {
+      mScaleToSize = aSize;
+      mScaleMode = aMode;
+      Mutated();
+    }
+  }
+
+
+  ImageContainer* GetContainer() { return mContainer; }
+  GraphicsFilter GetFilter() { return mFilter; }
+  const gfx::IntSize& GetScaleToSize() { return mScaleToSize; }
+  ScaleMode GetScaleMode() { return mScaleMode; }
+
+  MOZ_LAYER_DECL_NAME("ImageLayer", TYPE_IMAGE)
+
+  virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface);
+
+  /**
+   * if true, the image will only be backed by a single tile texture
+   */
+  void SetDisallowBigImage(bool aDisallowBigImage)
+  {
+    if (mDisallowBigImage != aDisallowBigImage) {
+      MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) DisallowBigImage", this));
+      mDisallowBigImage = aDisallowBigImage;
+      Mutated();
+    }
+  }
+
+protected:
+  ImageLayer(LayerManager* aManager, void* aImplData);
+  ~ImageLayer();
+  virtual nsACString& PrintInfo(nsACString& aTo, const char* aPrefix);
+
+
+  nsRefPtr<ImageContainer> mContainer;
+  GraphicsFilter mFilter;
+  gfx::IntSize mScaleToSize;
+  ScaleMode mScaleMode;
+  bool mDisallowBigImage;
+};
+
+}
+}
+
+#endif /* GFX_IMAGELAYER_H */