зеркало из https://github.com/mozilla/gecko-dev.git
92 строки
2.9 KiB
C++
92 строки
2.9 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_PATH_CAIRO_H_
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#define MOZILLA_GFX_PATH_CAIRO_H_
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#include "2D.h"
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#include "cairo.h"
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#include <vector>
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namespace mozilla {
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namespace gfx {
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class DrawTargetCairo;
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class PathCairo;
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class PathBuilderCairo : public PathBuilder
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{
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public:
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PathBuilderCairo(FillRule aFillRule);
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virtual void MoveTo(const Point &aPoint);
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virtual void LineTo(const Point &aPoint);
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virtual void BezierTo(const Point &aCP1,
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const Point &aCP2,
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const Point &aCP3);
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virtual void QuadraticBezierTo(const Point &aCP1,
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const Point &aCP2);
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virtual void Close();
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virtual void Arc(const Point &aOrigin, float aRadius, float aStartAngle,
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float aEndAngle, bool aAntiClockwise = false);
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virtual Point CurrentPoint() const;
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virtual TemporaryRef<Path> Finish();
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private: // data
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friend class PathCairo;
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FillRule mFillRule;
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std::vector<cairo_path_data_t> mPathData;
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// It's easiest to track this here, parsing the path data to find the current
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// point is a little tricky.
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Point mCurrentPoint;
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Point mBeginPoint;
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};
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class PathCairo : public Path
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{
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public:
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PathCairo(FillRule aFillRule, std::vector<cairo_path_data_t> &aPathData, const Point &aCurrentPoint);
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PathCairo(cairo_t *aContext);
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~PathCairo();
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virtual BackendType GetBackendType() const { return BACKEND_CAIRO; }
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virtual TemporaryRef<PathBuilder> CopyToBuilder(FillRule aFillRule = FILL_WINDING) const;
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virtual TemporaryRef<PathBuilder> TransformedCopyToBuilder(const Matrix &aTransform,
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FillRule aFillRule = FILL_WINDING) const;
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virtual bool ContainsPoint(const Point &aPoint, const Matrix &aTransform) const;
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virtual bool StrokeContainsPoint(const StrokeOptions &aStrokeOptions,
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const Point &aPoint,
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const Matrix &aTransform) const;
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virtual Rect GetBounds(const Matrix &aTransform = Matrix()) const;
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virtual Rect GetStrokedBounds(const StrokeOptions &aStrokeOptions,
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const Matrix &aTransform = Matrix()) const;
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virtual void StreamToSink(PathSink *aSink) const;
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virtual FillRule GetFillRule() const { return mFillRule; }
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void SetPathOnContext(cairo_t *aContext) const;
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void AppendPathToBuilder(PathBuilderCairo *aBuilder, const Matrix *aTransform = nullptr) const;
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private:
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void EnsureContainingContext() const;
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FillRule mFillRule;
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std::vector<cairo_path_data_t> mPathData;
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mutable cairo_t *mContainingContext;
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Point mCurrentPoint;
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};
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}
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}
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#endif /* MOZILLA_GFX_PATH_CAIRO_H_ */
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