1 files changed, 145 insertions, 0 deletions
diff --git a/gfx/layers/basic/BasicLayersImpl.h b/gfx/layers/basic/BasicLayersImpl.h
new file mode 100644
index 0000000000..37d968ca80
--- /dev/null
+++ b/gfx/layers/basic/BasicLayersImpl.h
@@ -0,0 +1,145 @@
+/* -*- 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/. */
+
+#ifndef GFX_BASICLAYERSIMPL_H
+#define GFX_BASICLAYERSIMPL_H
+
+#include "BasicImplData.h"       // for BasicImplData
+#include "BasicLayers.h"         // for BasicLayerManager
+#include "ReadbackLayer.h"       // for ReadbackLayer
+#include "gfxContext.h"          // for gfxContext, etc
+#include "mozilla/Attributes.h"  // for MOZ_STACK_CLASS
+#include "mozilla/Maybe.h"       // for Maybe
+#include "nsDebug.h"             // for NS_ASSERTION
+#include "nsISupportsImpl.h"     // for gfxContext::Release, etc
+#include "nsRegion.h"            // for nsIntRegion
+
+namespace mozilla {
+namespace gfx {
+class DrawTarget;
+}  // namespace gfx
+
+namespace layers {
+
+class AutoMoz2DMaskData;
+class Layer;
+
+class AutoSetOperator {
+  typedef mozilla::gfx::CompositionOp CompositionOp;
+
+ public:
+  AutoSetOperator(gfxContext* aContext, CompositionOp aOperator) {
+    if (aOperator != CompositionOp::OP_OVER) {
+      aContext->SetOp(aOperator);
+      mContext = aContext;
+    }
+  }
+  ~AutoSetOperator() {
+    if (mContext) {
+      mContext->SetOp(CompositionOp::OP_OVER);
+    }
+  }
+
+ private:
+  RefPtr<gfxContext> mContext;
+};
+
+class BasicReadbackLayer : public ReadbackLayer, public BasicImplData {
+ public:
+  explicit BasicReadbackLayer(BasicLayerManager* aLayerManager)
+      : ReadbackLayer(aLayerManager, static_cast<BasicImplData*>(this)) {
+    MOZ_COUNT_CTOR(BasicReadbackLayer);
+  }
+
+ protected:
+  MOZ_COUNTED_DTOR_OVERRIDE(BasicReadbackLayer)
+
+ public:
+  void SetVisibleRegion(const LayerIntRegion& aRegion) override {
+    NS_ASSERTION(BasicManager()->InConstruction(),
+                 "Can only set properties in construction phase");
+    ReadbackLayer::SetVisibleRegion(aRegion);
+  }
+
+ protected:
+  BasicLayerManager* BasicManager() {
+    return static_cast<BasicLayerManager*>(mManager);
+  }
+};
+
+/*
+ * Extract a mask surface for a mask layer
+ * Returns true and through outparams a surface for the mask layer if
+ * a mask layer is present and has a valid surface and transform;
+ * false otherwise.
+ * The transform for the layer will be put in aMaskData
+ */
+bool GetMaskData(Layer* aMaskLayer, const gfx::Point& aDeviceOffset,
+                 AutoMoz2DMaskData* aMaskData);
+
+already_AddRefed<gfx::SourceSurface> GetMaskForLayer(
+    Layer* aLayer, gfx::Matrix* aMaskTransform);
+
+// Paint the current source to a context using a mask, if present
+void PaintWithMask(gfxContext* aContext, float aOpacity, Layer* aMaskLayer);
+
+// Fill the rect with the source, using a mask and opacity, if present
+void FillRectWithMask(gfx::DrawTarget* aDT, const gfx::Rect& aRect,
+                      const gfx::DeviceColor& aColor,
+                      const gfx::DrawOptions& aOptions,
+                      gfx::SourceSurface* aMaskSource = nullptr,
+                      const gfx::Matrix* aMaskTransform = nullptr);
+void FillRectWithMask(gfx::DrawTarget* aDT, const gfx::Rect& aRect,
+                      gfx::SourceSurface* aSurface,
+                      gfx::SamplingFilter aSamplingFilter,
+                      const gfx::DrawOptions& aOptions,
+                      gfx::ExtendMode aExtendMode,
+                      gfx::SourceSurface* aMaskSource = nullptr,
+                      const gfx::Matrix* aMaskTransform = nullptr,
+                      const gfx::Matrix* aSurfaceTransform = nullptr);
+void FillRectWithMask(gfx::DrawTarget* aDT, const gfx::Point& aDeviceOffset,
+                      const gfx::Rect& aRect, gfx::SourceSurface* aSurface,
+                      gfx::SamplingFilter aSamplingFilter,
+                      const gfx::DrawOptions& aOptions, Layer* aMaskLayer);
+void FillRectWithMask(gfx::DrawTarget* aDT, const gfx::Point& aDeviceOffset,
+                      const gfx::Rect& aRect, const gfx::DeviceColor& aColor,
+                      const gfx::DrawOptions& aOptions, Layer* aMaskLayer);
+
+void FillPathWithMask(gfx::DrawTarget* aDT, const gfx::Path* aPath,
+                      const gfx::Rect& aClipRect,
+                      const gfx::DeviceColor& aColor,
+                      const gfx::DrawOptions& aOptions,
+                      gfx::SourceSurface* aMaskSource = nullptr,
+                      const gfx::Matrix* aMaskTransform = nullptr);
+void FillPathWithMask(gfx::DrawTarget* aDT, const gfx::Path* aPath,
+                      const gfx::Rect& aClipRect, gfx::SourceSurface* aSurface,
+                      gfx::SamplingFilter aSamplingFilter,
+                      const gfx::DrawOptions& aOptions,
+                      gfx::ExtendMode aExtendMode,
+                      gfx::SourceSurface* aMaskSource,
+                      const gfx::Matrix* aMaskTransform,
+                      const gfx::Matrix* aSurfaceTransform);
+
+BasicImplData* ToData(Layer* aLayer);
+
+/**
+ * Returns the operator to be used when blending and compositing this layer.
+ * Currently there is no way to specify both a blending and a compositing
+ * operator other than normal and source over respectively.
+ *
+ * If the layer has
+ * an effective blend mode operator other than normal, as returned by
+ * GetEffectiveMixBlendMode, this operator is used for blending, and source
+ * over is used for compositing.
+ * If the blend mode for this layer is normal, the compositing operator
+ * returned by GetOperator is used.
+ */
+gfx::CompositionOp GetEffectiveOperator(Layer* aLayer);
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif