1 files changed, 68 insertions, 0 deletions
diff --git a/gfx/layers/LayerScope.h b/gfx/layers/LayerScope.h
new file mode 100644
index 0000000000..89c09d46a2
--- /dev/null
+++ b/gfx/layers/LayerScope.h
@@ -0,0 +1,68 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=4 sw=2 sts=2 et: */
+/* 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_LAYERSCOPE_H
+#define GFX_LAYERSCOPE_H
+
+#include <stdint.h>
+#include <mozilla/UniquePtr.h>
+#include "gfxMatrix.h"
+#include "mozilla/gfx/Rect.h"
+
+namespace mozilla {
+
+namespace gl {
+class GLContext;
+}
+
+namespace layers {
+
+namespace layerscope {
+class Packet;
+}
+
+struct EffectChain;
+class LayerComposite;
+class TextureHost;
+
+class LayerScope {
+ public:
+  static void DrawBegin();
+  static void SetRenderOffset(float aX, float aY);
+  static void SetLayerTransform(const gfx::Matrix4x4& aMatrix);
+  static void SetDrawRects(size_t aRects, const gfx::Rect* aLayerRects,
+                           const gfx::Rect* aTextureRects);
+  static void DrawEnd(gl::GLContext* aGLContext,
+                      const EffectChain& aEffectChain, int aWidth, int aHeight);
+
+  static void SendLayer(LayerComposite* aLayer, int aWidth, int aHeight);
+  static void SendLayerDump(UniquePtr<layerscope::Packet> aPacket);
+  static bool CheckSendable();
+  static void CleanLayer();
+  static void SetHWComposed();
+
+  static void SetPixelScale(double devPixelsPerCSSPixel);
+  static void ContentChanged(TextureHost* host);
+
+ private:
+  static void Init();
+};
+
+// Perform BeginFrame and EndFrame automatically
+class LayerScopeAutoFrame final {
+ public:
+  explicit LayerScopeAutoFrame(int64_t aFrameStamp);
+  ~LayerScopeAutoFrame();
+
+ private:
+  static void BeginFrame(int64_t aFrameStamp);
+  static void EndFrame();
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif /* GFX_LAYERSCOPE_H */