1 files changed, 108 insertions, 0 deletions
diff --git a/gfx/layers/basic/BasicImageLayer.cpp b/gfx/layers/basic/BasicImageLayer.cpp
new file mode 100644
index 0000000000..d1b392154f
--- /dev/null
+++ b/gfx/layers/basic/BasicImageLayer.cpp
@@ -0,0 +1,108 @@
+/* -*- 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 "BasicLayersImpl.h"      // for FillRectWithMask, etc
+#include "ImageContainer.h"       // for AutoLockImage, etc
+#include "ImageLayers.h"          // for ImageLayer
+#include "Layers.h"               // for Layer (ptr only), etc
+#include "basic/BasicImplData.h"  // for BasicImplData
+#include "basic/BasicLayers.h"    // for BasicLayerManager
+#include "mozilla/mozalloc.h"     // for operator new
+#include "nsCOMPtr.h"             // for already_AddRefed
+#include "nsDebug.h"              // for NS_ASSERTION
+#include "nsISupportsImpl.h"      // for gfxPattern::Release, etc
+#include "nsRect.h"               // for mozilla::gfx::IntRect
+#include "nsRegion.h"             // for nsIntRegion
+#include "mozilla/gfx/Point.h"    // for IntSize
+
+using namespace mozilla::gfx;
+
+namespace mozilla::layers {
+
+class BasicImageLayer : public ImageLayer, public BasicImplData {
+ public:
+  explicit BasicImageLayer(BasicLayerManager* aLayerManager)
+      : ImageLayer(aLayerManager, static_cast<BasicImplData*>(this)),
+        mSize(-1, -1) {
+    MOZ_COUNT_CTOR(BasicImageLayer);
+  }
+
+ protected:
+  MOZ_COUNTED_DTOR_OVERRIDE(BasicImageLayer)
+
+ public:
+  void SetVisibleRegion(const LayerIntRegion& aRegion) override {
+    NS_ASSERTION(BasicManager()->InConstruction(),
+                 "Can only set properties in construction phase");
+    ImageLayer::SetVisibleRegion(aRegion);
+  }
+
+  void Paint(DrawTarget* aDT, const gfx::Point& aDeviceOffset,
+             Layer* aMaskLayer) override;
+
+  already_AddRefed<SourceSurface> GetAsSourceSurface() override;
+
+ protected:
+  BasicLayerManager* BasicManager() {
+    return static_cast<BasicLayerManager*>(mManager);
+  }
+
+  gfx::IntSize mSize;
+};
+
+void BasicImageLayer::Paint(DrawTarget* aDT, const gfx::Point& aDeviceOffset,
+                            Layer* aMaskLayer) {
+  if (IsHidden() || !mContainer) {
+    return;
+  }
+
+  RefPtr<ImageFactory> originalIF = mContainer->GetImageFactory();
+  mContainer->SetImageFactory(mManager->IsCompositingCheap()
+                                  ? nullptr
+                                  : BasicManager()->GetImageFactory());
+
+  AutoLockImage autoLock(mContainer);
+  Image* image = autoLock.GetImage(BasicManager()->GetCompositionTime());
+  if (!image) {
+    mContainer->SetImageFactory(originalIF);
+    return;
+  }
+  RefPtr<gfx::SourceSurface> surface = image->GetAsSourceSurface();
+  if (!surface || !surface->IsValid()) {
+    mContainer->SetImageFactory(originalIF);
+    return;
+  }
+
+  gfx::IntSize size = mSize = surface->GetSize();
+  FillRectWithMask(
+      aDT, aDeviceOffset, Rect(0, 0, size.width, size.height), surface,
+      mSamplingFilter,
+      DrawOptions(GetEffectiveOpacity(), GetEffectiveOperator(this)),
+      aMaskLayer);
+
+  mContainer->SetImageFactory(originalIF);
+}
+
+already_AddRefed<SourceSurface> BasicImageLayer::GetAsSourceSurface() {
+  if (!mContainer) {
+    return nullptr;
+  }
+
+  AutoLockImage lockImage(mContainer);
+  Image* image = lockImage.GetImage();
+  if (!image) {
+    return nullptr;
+  }
+  return image->GetAsSourceSurface();
+}
+
+already_AddRefed<ImageLayer> BasicLayerManager::CreateImageLayer() {
+  NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
+  RefPtr<ImageLayer> layer = new BasicImageLayer(this);
+  return layer.forget();
+}
+
+}  // namespace mozilla::layers