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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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+/* -*- 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_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:
+ virtual ~BasicReadbackLayer()
+ {
+ MOZ_COUNT_DTOR(BasicReadbackLayer);
+ }
+
+public:
+ virtual void SetVisibleRegion(const LayerIntRegion& aRegion)
+ {
+ 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::Color& 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::Color& aColor,
+ const gfx::DrawOptions& aOptions,
+ Layer* aMaskLayer);
+
+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