1 files changed, 77 insertions, 0 deletions
diff --git a/gfx/layers/basic/BasicCanvasLayer.cpp b/gfx/layers/basic/BasicCanvasLayer.cpp
new file mode 100644
index 0000000000..5f7399c020
--- /dev/null
+++ b/gfx/layers/basic/BasicCanvasLayer.cpp
@@ -0,0 +1,77 @@
+/* -*- 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/. */
+
+#include "BasicCanvasLayer.h"
+#include "basic/BasicLayers.h"      // for BasicLayerManager
+#include "basic/BasicLayersImpl.h"  // for GetEffectiveOperator
+#include "CanvasRenderer.h"
+#include "mozilla/mozalloc.h"  // for operator new
+#include "mozilla/Maybe.h"
+#include "nsCOMPtr.h"         // for already_AddRefed
+#include "nsISupportsImpl.h"  // for Layer::AddRef, etc
+#include "gfx2DGlue.h"
+#include "GLScreenBuffer.h"
+#include "GLContext.h"
+#include "gfxUtils.h"
+#include "mozilla/layers/PersistentBufferProvider.h"
+#include "client/TextureClientSharedSurface.h"
+
+class gfxContext;
+
+using namespace mozilla::gfx;
+using namespace mozilla::gl;
+
+namespace mozilla {
+namespace layers {
+
+void BasicCanvasLayer::Paint(DrawTarget* aDT, const Point& aDeviceOffset,
+                             Layer* aMaskLayer) {
+  if (IsHidden()) return;
+  // Ignore IsDirty().
+
+  MOZ_ASSERT(mCanvasRenderer);
+  mCanvasRenderer->FirePreTransactionCallback();
+
+  const auto snapshot = mCanvasRenderer->BorrowSnapshot();
+  if (!snapshot) return;
+  const auto& surface = snapshot->mSurf;
+
+  Maybe<Matrix> oldTM;
+  if (!mCanvasRenderer->YIsDown()) {
+    // y-flip
+    oldTM = Some(aDT->GetTransform());
+    aDT->SetTransform(Matrix(*oldTM)
+                          .PreTranslate(0.0f, mBounds.Height())
+                          .PreScale(1.0f, -1.0f));
+  }
+
+  FillRectWithMask(
+      aDT, aDeviceOffset, Rect(0, 0, mBounds.Width(), mBounds.Height()),
+      surface, mSamplingFilter,
+      DrawOptions(GetEffectiveOpacity(), GetEffectiveOperator(this)),
+      aMaskLayer);
+
+  if (oldTM) {
+    aDT->SetTransform(*oldTM);
+  }
+
+  mCanvasRenderer->FireDidTransactionCallback();
+
+  Painted();
+}
+
+RefPtr<CanvasRenderer> BasicCanvasLayer::CreateCanvasRendererInternal() {
+  return new CanvasRenderer();
+}
+
+already_AddRefed<CanvasLayer> BasicLayerManager::CreateCanvasLayer() {
+  NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
+  RefPtr<CanvasLayer> layer = new BasicCanvasLayer(this);
+  return layer.forget();
+}
+
+}  // namespace layers
+}  // namespace mozilla