PathCairo.h - mozsearch

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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_PATH_CAIRO_H_

#define MOZILLA_GFX_PATH_CAIRO_H_

#include "2D.h"

#include "cairo.h"

#include <vector>

namespace mozilla {

namespace gfx {

class PathCairo;

class PathBuilderCairo : public PathBuilder {

 public:

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathBuilderCairo, override)

  explicit PathBuilderCairo(FillRule aFillRule);

  void MoveTo(const Point& aPoint) override;

  void LineTo(const Point& aPoint) override;

  void BezierTo(const Point& aCP1, const Point& aCP2,

                const Point& aCP3) override;

  void QuadraticBezierTo(const Point& aCP1, const Point& aCP2) override;

  void Close() override;

  void Arc(const Point& aOrigin, float aRadius, float aStartAngle,

           float aEndAngle, bool aAntiClockwise = false) override;

  already_AddRefed<Path> Finish() override;

  BackendType GetBackendType() const override { return BackendType::CAIRO; }

  bool IsActive() const override { return !mPathData.empty(); }

  static already_AddRefed<PathBuilder> Create(FillRule aFillRule);

 private:  // data

  friend class PathCairo;

  FillRule mFillRule;

  std::vector<cairo_path_data_t> mPathData;

};

class PathCairo : public Path {

 public:

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathCairo, override)

  PathCairo(FillRule aFillRule, std::vector<cairo_path_data_t>& aPathData,

            const Point& aCurrentPoint, const Point& aBeginPoint);

  explicit PathCairo(cairo_t* aContext);

  virtual ~PathCairo();

  BackendType GetBackendType() const override { return BackendType::CAIRO; }

  already_AddRefed<PathBuilder> CopyToBuilder(

      FillRule aFillRule) const override;

  already_AddRefed<PathBuilder> TransformedCopyToBuilder(

      const Matrix& aTransform, FillRule aFillRule) const override;

  bool ContainsPoint(const Point& aPoint,

                     const Matrix& aTransform) const override;

  bool StrokeContainsPoint(const StrokeOptions& aStrokeOptions,

                           const Point& aPoint,

                           const Matrix& aTransform) const override;

  Rect GetBounds(const Matrix& aTransform = Matrix()) const override;

  Rect GetStrokedBounds(const StrokeOptions& aStrokeOptions,

                        const Matrix& aTransform = Matrix()) const override;

  void StreamToSink(PathSink* aSink) const override;

  FillRule GetFillRule() const override { return mFillRule; }

  void SetPathOnContext(cairo_t* aContext) const;

  void AppendPathToBuilder(PathBuilderCairo* aBuilder,

                           const Matrix* aTransform = nullptr) const;

  bool IsEmpty() const override;

 private:

  void EnsureContainingContext(const Matrix& aTransform) const;

  FillRule mFillRule;

  std::vector<cairo_path_data_t> mPathData;

  mutable cairo_t* mContainingContext;

  mutable Matrix mContainingTransform;

  Point mCurrentPoint;

  Point mBeginPoint;

};

}  // namespace gfx

}  // namespace mozilla

#endif /* MOZILLA_GFX_PATH_CAIRO_H_ */