1 files changed, 94 insertions, 0 deletions
diff --git a/gfx/layers/ImageLayers.h b/gfx/layers/ImageLayers.h
new file mode 100644
index 0000000000..90e59fc25b
--- /dev/null
+++ b/gfx/layers/ImageLayers.h
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "mozilla/gfx/BaseSize.h"  // for BaseSize
+#include "mozilla/gfx/Point.h"     // for IntSize
+#include "mozilla/layers/LayersTypes.h"
+#include "nscore.h"  // for nsACString
+
+namespace mozilla {
+namespace layers {
+
+class ImageContainer;
+
+namespace layerscope {
+class LayersPacket;
+}  // namespace layerscope
+
+/**
+ * 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 SetSamplingFilter(gfx::SamplingFilter aSamplingFilter) {
+    if (mSamplingFilter != aSamplingFilter) {
+      MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) Filter", this));
+      mSamplingFilter = aSamplingFilter;
+      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; }
+  gfx::SamplingFilter GetSamplingFilter() { return mSamplingFilter; }
+  const gfx::IntSize& GetScaleToSize() { return mScaleToSize; }
+  ScaleMode GetScaleMode() { return mScaleMode; }
+
+  MOZ_LAYER_DECL_NAME("ImageLayer", TYPE_IMAGE)
+
+  void ComputeEffectiveTransforms(
+      const gfx::Matrix4x4& aTransformToSurface) override;
+
+  const gfx::Matrix4x4& GetEffectiveTransformForBuffer() const override {
+    return mEffectiveTransformForBuffer;
+  }
+
+  ImageLayer* AsImageLayer() override { return this; }
+
+ protected:
+  ImageLayer(LayerManager* aManager, void* aImplData);
+  virtual ~ImageLayer();
+  void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
+  void DumpPacket(layerscope::LayersPacket* aPacket,
+                  const void* aParent) override;
+
+  RefPtr<ImageContainer> mContainer;
+  gfx::SamplingFilter mSamplingFilter;
+  gfx::IntSize mScaleToSize;
+  ScaleMode mScaleMode;
+  gfx::Matrix4x4 mEffectiveTransformForBuffer;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif /* GFX_IMAGELAYER_H */