1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/2d/DrawTargetDual.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,164 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef MOZILLA_GFX_DRAWTARGETDUAL_H_
1.10 +#define MOZILLA_GFX_DRAWTARGETDUAL_H_
1.11 +
1.12 +#include <vector>
1.13 +#include <sstream>
1.14 +
1.15 +#include "SourceSurfaceDual.h"
1.16 +
1.17 +#include "2D.h"
1.18 +#include "Filters.h"
1.19 +
1.20 +namespace mozilla {
1.21 +namespace gfx {
1.22 +
1.23 +#define FORWARD_FUNCTION(funcName) \
1.24 + virtual void funcName() { mA->funcName(); mB->funcName(); }
1.25 +#define FORWARD_FUNCTION1(funcName, var1Type, var1Name) \
1.26 + virtual void funcName(var1Type var1Name) { mA->funcName(var1Name); mB->funcName(var1Name); }
1.27 +
1.28 +/* This is a special type of DrawTarget. It duplicates all drawing calls
1.29 + * accross two drawtargets. An exception to this is when a snapshot of another
1.30 + * dual DrawTarget is used as the source for any surface data. In this case
1.31 + * the snapshot of the first source DrawTarget is used as a source for the call
1.32 + * to the first destination DrawTarget (mA) and the snapshot of the second
1.33 + * source DrawTarget is used at the source for the second destination
1.34 + * DrawTarget (mB). This class facilitates black-background/white-background
1.35 + * drawing for per-component alpha extraction for backends which do not support
1.36 + * native component alpha.
1.37 + */
1.38 +class DrawTargetDual : public DrawTarget
1.39 +{
1.40 +public:
1.41 + MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DrawTargetDual)
1.42 + DrawTargetDual(DrawTarget *aA, DrawTarget *aB)
1.43 + : mA(aA)
1.44 + , mB(aB)
1.45 + {
1.46 + mFormat = aA->GetFormat();
1.47 + }
1.48 +
1.49 + virtual BackendType GetType() const { return mA->GetType(); }
1.50 + virtual TemporaryRef<SourceSurface> Snapshot() { return new SourceSurfaceDual(mA, mB); }
1.51 + virtual IntSize GetSize() { return mA->GetSize(); }
1.52 +
1.53 + FORWARD_FUNCTION(Flush)
1.54 + FORWARD_FUNCTION1(PushClip, const Path *, aPath)
1.55 + FORWARD_FUNCTION1(PushClipRect, const Rect &, aRect)
1.56 + FORWARD_FUNCTION(PopClip)
1.57 + FORWARD_FUNCTION1(ClearRect, const Rect &, aRect)
1.58 +
1.59 + virtual void SetTransform(const Matrix &aTransform) {
1.60 + mTransform = aTransform;
1.61 + mA->SetTransform(aTransform);
1.62 + mB->SetTransform(aTransform);
1.63 + }
1.64 +
1.65 + virtual void DrawSurface(SourceSurface *aSurface, const Rect &aDest, const Rect & aSource,
1.66 + const DrawSurfaceOptions &aSurfOptions, const DrawOptions &aOptions);
1.67 +
1.68 + virtual void DrawFilter(FilterNode *aNode,
1.69 + const Rect &aSourceRect,
1.70 + const Point &aDestPoint,
1.71 + const DrawOptions &aOptions = DrawOptions())
1.72 + {
1.73 + mA->DrawFilter(aNode, aSourceRect, aDestPoint, aOptions);
1.74 + mB->DrawFilter(aNode, aSourceRect, aDestPoint, aOptions);
1.75 + }
1.76 +
1.77 + virtual void MaskSurface(const Pattern &aSource,
1.78 + SourceSurface *aMask,
1.79 + Point aOffset,
1.80 + const DrawOptions &aOptions = DrawOptions());
1.81 +
1.82 + virtual void DrawSurfaceWithShadow(SourceSurface *aSurface, const Point &aDest,
1.83 + const Color &aColor, const Point &aOffset,
1.84 + Float aSigma, CompositionOp aOp);
1.85 +
1.86 + virtual void CopySurface(SourceSurface *aSurface, const IntRect &aSourceRect,
1.87 + const IntPoint &aDestination);
1.88 +
1.89 + virtual void FillRect(const Rect &aRect, const Pattern &aPattern, const DrawOptions &aOptions);
1.90 +
1.91 + virtual void StrokeRect(const Rect &aRect, const Pattern &aPattern,
1.92 + const StrokeOptions &aStrokeOptions, const DrawOptions &aOptions);
1.93 +
1.94 + virtual void StrokeLine(const Point &aStart, const Point &aEnd, const Pattern &aPattern,
1.95 + const StrokeOptions &aStrokeOptions, const DrawOptions &aOptions);
1.96 +
1.97 + virtual void Stroke(const Path *aPath, const Pattern &aPattern,
1.98 + const StrokeOptions &aStrokeOptions, const DrawOptions &aOptions);
1.99 +
1.100 + virtual void Fill(const Path *aPath, const Pattern &aPattern, const DrawOptions &aOptions);
1.101 +
1.102 + virtual void FillGlyphs(ScaledFont *aScaledFont, const GlyphBuffer &aBuffer,
1.103 + const Pattern &aPattern, const DrawOptions &aOptions,
1.104 + const GlyphRenderingOptions *aRenderingOptions);
1.105 +
1.106 + virtual void Mask(const Pattern &aSource, const Pattern &aMask, const DrawOptions &aOptions);
1.107 +
1.108 + virtual TemporaryRef<SourceSurface>
1.109 + CreateSourceSurfaceFromData(unsigned char *aData,
1.110 + const IntSize &aSize,
1.111 + int32_t aStride,
1.112 + SurfaceFormat aFormat) const
1.113 + {
1.114 + return mA->CreateSourceSurfaceFromData(aData, aSize, aStride, aFormat);
1.115 + }
1.116 +
1.117 + virtual TemporaryRef<SourceSurface> OptimizeSourceSurface(SourceSurface *aSurface) const
1.118 + {
1.119 + return mA->OptimizeSourceSurface(aSurface);
1.120 + }
1.121 +
1.122 + virtual TemporaryRef<SourceSurface>
1.123 + CreateSourceSurfaceFromNativeSurface(const NativeSurface &aSurface) const
1.124 + {
1.125 + return mA->CreateSourceSurfaceFromNativeSurface(aSurface);
1.126 + }
1.127 +
1.128 + virtual TemporaryRef<DrawTarget>
1.129 + CreateSimilarDrawTarget(const IntSize &aSize, SurfaceFormat aFormat) const;
1.130 +
1.131 + virtual TemporaryRef<PathBuilder> CreatePathBuilder(FillRule aFillRule = FillRule::FILL_WINDING) const
1.132 + {
1.133 + return mA->CreatePathBuilder(aFillRule);
1.134 + }
1.135 +
1.136 + virtual TemporaryRef<GradientStops>
1.137 + CreateGradientStops(GradientStop *aStops,
1.138 + uint32_t aNumStops,
1.139 + ExtendMode aExtendMode = ExtendMode::CLAMP) const
1.140 + {
1.141 + return mA->CreateGradientStops(aStops, aNumStops, aExtendMode);
1.142 + }
1.143 +
1.144 + virtual TemporaryRef<FilterNode> CreateFilter(FilterType aType)
1.145 + {
1.146 + return mA->CreateFilter(aType);
1.147 + }
1.148 +
1.149 + virtual void *GetNativeSurface(NativeSurfaceType aType)
1.150 + {
1.151 + return nullptr;
1.152 + }
1.153 +
1.154 + virtual bool IsDualDrawTarget()
1.155 + {
1.156 + return true;
1.157 + }
1.158 +
1.159 +private:
1.160 + RefPtr<DrawTarget> mA;
1.161 + RefPtr<DrawTarget> mB;
1.162 +};
1.163 +
1.164 +}
1.165 +}
1.166 +
1.167 +#endif /* MOZILLA_GFX_DRAWTARGETDUAL_H_ */
