From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 gfx/layers/ImageLayers.h | 94 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 gfx/layers/ImageLayers.h

(limited to 'gfx/layers/ImageLayers.h')

diff --git a/gfx/layers/ImageLayers.h b/gfx/layers/ImageLayers.h
new file mode 100644
index 000000000..9c5d4f4f0
--- /dev/null
+++ b/gfx/layers/ImageLayers.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_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 "nsAutoPtr.h"                  // for nsRefPtr
+#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)
+
+  virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface) override;
+
+  virtual const gfx::Matrix4x4& GetEffectiveTransformForBuffer() const override
+  {
+    return mEffectiveTransformForBuffer;
+  }
+
+protected:
+  ImageLayer(LayerManager* aManager, void* aImplData);
+  ~ImageLayer();
+  virtual void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
+  virtual 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 */
-- 
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