Add m-esr52 at 52.6.0

1 files changed, 116 insertions, 0 deletions

diff --git a/gfx/layers/client/ClientCanvasLayer.h b/gfx/layers/client/ClientCanvasLayer.h
new file mode 100644
index 000000000..9a655727c
--- /dev/null
+++ b/gfx/layers/client/ClientCanvasLayer.h
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 2; 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_CLIENTCANVASLAYER_H
+#define GFX_CLIENTCANVASLAYER_H
+
+#include "CanvasClient.h"               // for CanvasClient, etc
+#include "ClientLayerManager.h"         // for ClientLayerManager, etc
+#include "CopyableCanvasLayer.h"        // for CopyableCanvasLayer
+#include "Layers.h"                     // for CanvasLayer, etc
+#include "mozilla/Attributes.h"         // for override
+#include "mozilla/RefPtr.h"             // for RefPtr
+#include "mozilla/layers/LayersMessages.h"  // for CanvasLayerAttributes, etc
+#include "mozilla/mozalloc.h"           // for operator delete
+#include "nsDebug.h"                    // for NS_ASSERTION
+#include "nsISupportsImpl.h"            // for MOZ_COUNT_CTOR, etc
+#include "nsRegion.h"                   // for nsIntRegion
+
+namespace mozilla {
+namespace gl {
+class SurfaceFactory;
+} // namespace gl
+
+namespace layers {
+
+class CompositableClient;
+class ShadowableLayer;
+
+class ClientCanvasLayer : public CopyableCanvasLayer,
+                          public ClientLayer
+{
+  typedef CanvasClient::CanvasClientType CanvasClientType;
+public:
+  explicit ClientCanvasLayer(ClientLayerManager* aLayerManager) :
+    CopyableCanvasLayer(aLayerManager, static_cast<ClientLayer*>(this))
+  {
+    MOZ_COUNT_CTOR(ClientCanvasLayer);
+  }
+
+protected:
+  virtual ~ClientCanvasLayer();
+
+public:
+  virtual void SetVisibleRegion(const LayerIntRegion& aRegion) override
+  {
+    NS_ASSERTION(ClientManager()->InConstruction(),
+                 "Can only set properties in construction phase");
+    CanvasLayer::SetVisibleRegion(aRegion);
+  }
+
+  virtual void Initialize(const Data& aData) override;
+
+  virtual void RenderLayer() override;
+
+  virtual void ClearCachedResources() override
+  {
+    if (mCanvasClient) {
+      mCanvasClient->Clear();
+    }
+  }
+
+  virtual void HandleMemoryPressure() override
+  {
+    if (mCanvasClient) {
+      mCanvasClient->HandleMemoryPressure();
+    }
+  }
+
+  virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs) override
+  {
+    aAttrs = CanvasLayerAttributes(mSamplingFilter, mBounds);
+  }
+
+  virtual Layer* AsLayer()  override { return this; }
+  virtual ShadowableLayer* AsShadowableLayer()  override { return this; }
+
+  virtual void Disconnect() override
+  {
+    mCanvasClient = nullptr;
+    ClientLayer::Disconnect();
+  }
+
+  virtual CompositableClient* GetCompositableClient() override
+  {
+    return mCanvasClient;
+  }
+
+  const TextureFlags& Flags() const { return mFlags; }
+
+protected:
+
+  bool UpdateTarget(gfx::DrawTarget* aDestTarget = nullptr);
+
+  ClientLayerManager* ClientManager()
+  {
+    return static_cast<ClientLayerManager*>(mManager);
+  }
+
+  CanvasClientType GetCanvasClientType();
+
+  RefPtr<CanvasClient> mCanvasClient;
+
+  UniquePtr<gl::SurfaceFactory> mFactory;
+
+  TextureFlags mFlags;
+
+  friend class CanvasClient2D;
+  friend class CanvasClientSharedSurface;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif