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https://gitlab.winehq.org/wine/wine-gecko.git
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173 lines
6.4 KiB
C++
173 lines
6.4 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef _MOZILLA_GFX_DRAWTARGET_CAIRO_H_
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#define _MOZILLA_GFX_DRAWTARGET_CAIRO_H_
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#include "2D.h"
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#include "cairo.h"
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#include "PathCairo.h"
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#include <vector>
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namespace mozilla {
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namespace gfx {
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class SourceSurfaceCairo;
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class GradientStopsCairo : public GradientStops
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{
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public:
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GradientStopsCairo(GradientStop* aStops, uint32_t aNumStops)
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{
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for (uint32_t i = 0; i < aNumStops; ++i) {
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mStops.push_back(aStops[i]);
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}
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}
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virtual ~GradientStopsCairo() {}
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const std::vector<GradientStop>& GetStops() const
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{
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return mStops;
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}
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virtual BackendType GetBackendType() const { return BACKEND_CAIRO; }
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private:
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std::vector<GradientStop> mStops;
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};
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class DrawTargetCairo : public DrawTarget
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{
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public:
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DrawTargetCairo();
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virtual ~DrawTargetCairo();
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virtual BackendType GetType() const { return BACKEND_CAIRO; }
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virtual TemporaryRef<SourceSurface> Snapshot();
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virtual IntSize GetSize();
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virtual void Flush();
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virtual void DrawSurface(SourceSurface *aSurface,
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const Rect &aDest,
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const Rect &aSource,
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const DrawSurfaceOptions &aSurfOptions = DrawSurfaceOptions(),
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const DrawOptions &aOptions = DrawOptions());
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virtual void DrawSurfaceWithShadow(SourceSurface *aSurface,
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const Point &aDest,
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const Color &aColor,
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const Point &aOffset,
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Float aSigma,
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CompositionOp aOperator);
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virtual void ClearRect(const Rect &aRect);
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virtual void CopySurface(SourceSurface *aSurface,
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const IntRect &aSourceRect,
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const IntPoint &aDestination);
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virtual void FillRect(const Rect &aRect,
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const Pattern &aPattern,
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const DrawOptions &aOptions = DrawOptions());
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virtual void StrokeRect(const Rect &aRect,
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const Pattern &aPattern,
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const StrokeOptions &aStrokeOptions = StrokeOptions(),
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const DrawOptions &aOptions = DrawOptions());
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virtual void StrokeLine(const Point &aStart,
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const Point &aEnd,
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const Pattern &aPattern,
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const StrokeOptions &aStrokeOptions = StrokeOptions(),
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const DrawOptions &aOptions = DrawOptions());
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virtual void Stroke(const Path *aPath,
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const Pattern &aPattern,
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const StrokeOptions &aStrokeOptions = StrokeOptions(),
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const DrawOptions &aOptions = DrawOptions());
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virtual void Fill(const Path *aPath,
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const Pattern &aPattern,
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const DrawOptions &aOptions = DrawOptions());
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virtual void FillGlyphs(ScaledFont *aFont,
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const GlyphBuffer &aBuffer,
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const Pattern &aPattern,
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const DrawOptions &aOptions,
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const GlyphRenderingOptions *aRenderingOptions = NULL);
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virtual void Mask(const Pattern &aSource,
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const Pattern &aMask,
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const DrawOptions &aOptions = DrawOptions());
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virtual void PushClip(const Path *aPath);
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virtual void PushClipRect(const Rect &aRect);
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virtual void PopClip();
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virtual TemporaryRef<PathBuilder> CreatePathBuilder(FillRule aFillRule = FILL_WINDING) const;
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virtual TemporaryRef<SourceSurface> CreateSourceSurfaceFromData(unsigned char *aData,
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const IntSize &aSize,
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int32_t aStride,
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SurfaceFormat aFormat) const;
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virtual TemporaryRef<SourceSurface> OptimizeSourceSurface(SourceSurface *aSurface) const;
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virtual TemporaryRef<SourceSurface>
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CreateSourceSurfaceFromNativeSurface(const NativeSurface &aSurface) const;
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virtual TemporaryRef<DrawTarget>
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CreateSimilarDrawTarget(const IntSize &aSize, SurfaceFormat aFormat) const;
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virtual TemporaryRef<GradientStops>
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CreateGradientStops(GradientStop *aStops,
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uint32_t aNumStops,
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ExtendMode aExtendMode = EXTEND_CLAMP) const;
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virtual void *GetNativeSurface(NativeSurfaceType aType);
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bool Init(cairo_surface_t* aSurface, const IntSize& aSize);
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void SetPathObserver(CairoPathContext* aPathObserver);
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virtual void SetTransform(const Matrix& aTransform);
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// Call to set up aContext for drawing (with the current transform, etc).
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// Pass the path you're going to be using if you have one.
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// Implicitly calls WillChange(aPath).
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void PrepareForDrawing(cairo_t* aContext, const Path* aPath = NULL);
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private: // methods
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enum DrawPatternType { DRAW_FILL, DRAW_STROKE };
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void DrawPattern(const Pattern& aPattern,
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const StrokeOptions& aStrokeOptions,
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const DrawOptions& aOptions,
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DrawPatternType aDrawType);
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// Copy-on-write support for snapshot surfaces.
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friend class SourceSurfaceCairo;
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void AppendSnapshot(SourceSurfaceCairo* aSnapshot);
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void RemoveSnapshot(SourceSurfaceCairo* aSnapshot);
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// Call before you make any changes to the backing surface with which this
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// context is associated. Pass the path you're going to be using if you have
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// one.
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void WillChange(const Path* aPath = NULL);
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// Call if there is any reason to disassociate all snapshots from this draw
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// target; for example, because we're going to be destroyed.
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void MarkSnapshotsIndependent();
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// If the current operator is "source" then clear the destination before we
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// draw into it, to simulate the effect of an unbounded source operator.
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void ClearSurfaceForUnboundedSource(const CompositionOp &aOperator);
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private: // data
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cairo_t* mContext;
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cairo_surface_t* mSurface;
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IntSize mSize;
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std::vector<SourceSurfaceCairo*> mSnapshots;
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mutable RefPtr<CairoPathContext> mPathObserver;
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};
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}
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}
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#endif // _MOZILLA_GFX_DRAWTARGET_CAIRO_H_
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