зеркало из https://github.com/mozilla/gecko-dev.git
100 строки
3.2 KiB
C++
100 строки
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 PathCairo;
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class PathBuilderCairo : public PathBuilder {
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public:
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MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathBuilderCairo, override)
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explicit PathBuilderCairo(FillRule aFillRule);
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void MoveTo(const Point& aPoint) override;
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void LineTo(const Point& aPoint) override;
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void BezierTo(const Point& aCP1, const Point& aCP2,
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const Point& aCP3) override;
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void QuadraticBezierTo(const Point& aCP1, const Point& aCP2) override;
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void Close() override;
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void Arc(const Point& aOrigin, float aRadius, float aStartAngle,
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float aEndAngle, bool aAntiClockwise = false) override;
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Point CurrentPoint() const override;
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already_AddRefed<Path> Finish() override;
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BackendType GetBackendType() const override { return BackendType::CAIRO; }
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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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public:
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MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathCairo, override)
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PathCairo(FillRule aFillRule, std::vector<cairo_path_data_t>& aPathData,
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const Point& aCurrentPoint);
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explicit PathCairo(cairo_t* aContext);
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virtual ~PathCairo();
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BackendType GetBackendType() const override { return BackendType::CAIRO; }
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already_AddRefed<PathBuilder> CopyToBuilder(
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FillRule aFillRule) const override;
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already_AddRefed<PathBuilder> TransformedCopyToBuilder(
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const Matrix& aTransform, FillRule aFillRule) const override;
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bool ContainsPoint(const Point& aPoint,
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const Matrix& aTransform) const override;
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bool StrokeContainsPoint(const StrokeOptions& aStrokeOptions,
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const Point& aPoint,
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const Matrix& aTransform) const override;
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Rect GetBounds(const Matrix& aTransform = Matrix()) const override;
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Rect GetStrokedBounds(const StrokeOptions& aStrokeOptions,
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const Matrix& aTransform = Matrix()) const override;
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void StreamToSink(PathSink* aSink) const override;
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FillRule GetFillRule() const override { return mFillRule; }
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void SetPathOnContext(cairo_t* aContext) const;
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void AppendPathToBuilder(PathBuilderCairo* aBuilder,
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const Matrix* aTransform = nullptr) const;
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private:
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void EnsureContainingContext(const Matrix& aTransform) 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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mutable Matrix mContainingTransform;
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Point mCurrentPoint;
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};
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} // namespace gfx
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} // namespace mozilla
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#endif /* MOZILLA_GFX_PATH_CAIRO_H_ */
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