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/* -*- Mode: C++; tab-width: 20; 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 MOZILLA_GFX_DRAWTARGETDUAL_H_
#define MOZILLA_GFX_DRAWTARGETDUAL_H_
#include <vector>
#include <sstream>
#include "SourceSurfaceDual.h"
#include "2D.h"
#include "Filters.h"
namespace mozilla {
namespace gfx {
#define FORWARD_FUNCTION(funcName) \
virtual void funcName() override { mA->funcName(); mB->funcName(); }
#define FORWARD_FUNCTION1(funcName, var1Type, var1Name) \
virtual void funcName(var1Type var1Name) override { mA->funcName(var1Name); mB->funcName(var1Name); }
/* This is a special type of DrawTarget. It duplicates all drawing calls
* accross two drawtargets. An exception to this is when a snapshot of another
* dual DrawTarget is used as the source for any surface data. In this case
* the snapshot of the first source DrawTarget is used as a source for the call
* to the first destination DrawTarget (mA) and the snapshot of the second
* source DrawTarget is used at the source for the second destination
* DrawTarget (mB). This class facilitates black-background/white-background
* drawing for per-component alpha extraction for backends which do not support
* native component alpha.
*/
class DrawTargetDual : public DrawTarget
{
public:
MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DrawTargetDual, override)
DrawTargetDual(DrawTarget *aA, DrawTarget *aB)
: mA(aA)
, mB(aB)
{
mFormat = aA->GetFormat();
}
virtual DrawTargetType GetType() const override { return mA->GetType(); }
virtual BackendType GetBackendType() const override { return mA->GetBackendType(); }
virtual already_AddRefed<SourceSurface> Snapshot() override {
return MakeAndAddRef<SourceSurfaceDual>(mA, mB);
}
virtual IntSize GetSize() override { return mA->GetSize(); }
virtual void DetachAllSnapshots() override;
FORWARD_FUNCTION(Flush)
FORWARD_FUNCTION1(PushClip, const Path *, aPath)
FORWARD_FUNCTION1(PushClipRect, const Rect &, aRect)
FORWARD_FUNCTION(PopClip)
FORWARD_FUNCTION(PopLayer)
FORWARD_FUNCTION1(ClearRect, const Rect &, aRect)
virtual void SetTransform(const Matrix &aTransform) override {
mTransform = aTransform;
mA->SetTransform(aTransform);
mB->SetTransform(aTransform);
}
virtual void DrawSurface(SourceSurface *aSurface, const Rect &aDest, const Rect & aSource,
const DrawSurfaceOptions &aSurfOptions, const DrawOptions &aOptions) override;
virtual void DrawFilter(FilterNode *aNode,
const Rect &aSourceRect,
const Point &aDestPoint,
const DrawOptions &aOptions = DrawOptions()) override
{
mA->DrawFilter(aNode, aSourceRect, aDestPoint, aOptions);
mB->DrawFilter(aNode, aSourceRect, aDestPoint, aOptions);
}
virtual void MaskSurface(const Pattern &aSource,
SourceSurface *aMask,
Point aOffset,
const DrawOptions &aOptions = DrawOptions()) override;
virtual void DrawSurfaceWithShadow(SourceSurface *aSurface, const Point &aDest,
const Color &aColor, const Point &aOffset,
Float aSigma, CompositionOp aOp) override;
virtual void CopySurface(SourceSurface *aSurface, const IntRect &aSourceRect,
const IntPoint &aDestination) override;
virtual void FillRect(const Rect &aRect, const Pattern &aPattern, const DrawOptions &aOptions) override;
virtual void StrokeRect(const Rect &aRect, const Pattern &aPattern,
const StrokeOptions &aStrokeOptions, const DrawOptions &aOptions) override;
virtual void StrokeLine(const Point &aStart, const Point &aEnd, const Pattern &aPattern,
const StrokeOptions &aStrokeOptions, const DrawOptions &aOptions) override;
virtual void Stroke(const Path *aPath, const Pattern &aPattern,
const StrokeOptions &aStrokeOptions, const DrawOptions &aOptions) override;
virtual void Fill(const Path *aPath, const Pattern &aPattern, const DrawOptions &aOptions) override;
virtual void FillGlyphs(ScaledFont *aScaledFont, const GlyphBuffer &aBuffer,
const Pattern &aPattern, const DrawOptions &aOptions,
const GlyphRenderingOptions *aRenderingOptions) override;
virtual void Mask(const Pattern &aSource, const Pattern &aMask, const DrawOptions &aOptions) override;
virtual void PushLayer(bool aOpaque, Float aOpacity,
SourceSurface* aMask,
const Matrix& aMaskTransform,
const IntRect& aBounds = IntRect(),
bool aCopyBackground = false) override;
virtual already_AddRefed<SourceSurface>
CreateSourceSurfaceFromData(unsigned char *aData,
const IntSize &aSize,
int32_t aStride,
SurfaceFormat aFormat) const override
{
return mA->CreateSourceSurfaceFromData(aData, aSize, aStride, aFormat);
}
virtual already_AddRefed<SourceSurface> OptimizeSourceSurface(SourceSurface *aSurface) const override
{
return mA->OptimizeSourceSurface(aSurface);
}
virtual already_AddRefed<SourceSurface>
CreateSourceSurfaceFromNativeSurface(const NativeSurface &aSurface) const override
{
return mA->CreateSourceSurfaceFromNativeSurface(aSurface);
}
virtual already_AddRefed<DrawTarget>
CreateSimilarDrawTarget(const IntSize &aSize, SurfaceFormat aFormat) const override;
virtual already_AddRefed<PathBuilder> CreatePathBuilder(FillRule aFillRule = FillRule::FILL_WINDING) const override
{
return mA->CreatePathBuilder(aFillRule);
}
virtual already_AddRefed<GradientStops>
CreateGradientStops(GradientStop *aStops,
uint32_t aNumStops,
ExtendMode aExtendMode = ExtendMode::CLAMP) const override
{
return mA->CreateGradientStops(aStops, aNumStops, aExtendMode);
}
virtual already_AddRefed<FilterNode> CreateFilter(FilterType aType) override
{
return mA->CreateFilter(aType);
}
virtual void *GetNativeSurface(NativeSurfaceType aType) override
{
return nullptr;
}
virtual bool IsDualDrawTarget() const override
{
return true;
}
virtual bool IsCurrentGroupOpaque() override { return mA->IsCurrentGroupOpaque(); }
private:
RefPtr<DrawTarget> mA;
RefPtr<DrawTarget> mB;
};
} // namespace gfx
} // namespace mozilla
#endif /* MOZILLA_GFX_DRAWTARGETDUAL_H_ */
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