gfx/2d/PathCairo.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef MOZILLA_GFX_PATH_CAIRO_H_
   8 #define MOZILLA_GFX_PATH_CAIRO_H_
   9
  10 #include "2D.h"
  11 #include "cairo.h"
  12 #include <vector>
  13
  14 namespace mozilla {
  15 namespace gfx {
  16
  17 class PathCairo;
  18
  19 class PathBuilderCairo : public PathBuilder {
  20  public:
  21   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathBuilderCairo, override)
  22
  23   explicit PathBuilderCairo(FillRule aFillRule);
  24
  25   void MoveTo(const Point& aPoint) override;
  26   void LineTo(const Point& aPoint) override;
  27   void BezierTo(const Point& aCP1, const Point& aCP2,
  28                 const Point& aCP3) override;
  29   void QuadraticBezierTo(const Point& aCP1, const Point& aCP2) override;
  30   void Close() override;
  31   void Arc(const Point& aOrigin, float aRadius, float aStartAngle,
  32            float aEndAngle, bool aAntiClockwise = false) override;
  33   already_AddRefed<Path> Finish() override;
  34
  35   BackendType GetBackendType() const override { return BackendType::CAIRO; }
  36
  37  private:  // data
  38   friend class PathCairo;
  39
  40   FillRule mFillRule;
  41   std::vector<cairo_path_data_t> mPathData;
  42 };
  43
  44 class PathCairo : public Path {
  45  public:
  46   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathCairo, override)
  47
  48   PathCairo(FillRule aFillRule, std::vector<cairo_path_data_t>& aPathData,
  49             const Point& aCurrentPoint, const Point& aBeginPoint);
  50   explicit PathCairo(cairo_t* aContext);
  51   virtual ~PathCairo();
  52
  53   BackendType GetBackendType() const override { return BackendType::CAIRO; }
  54
  55   already_AddRefed<PathBuilder> CopyToBuilder(
  56       FillRule aFillRule) const override;
  57   already_AddRefed<PathBuilder> TransformedCopyToBuilder(
  58       const Matrix& aTransform, FillRule aFillRule) const override;
  59
  60   bool ContainsPoint(const Point& aPoint,
  61                      const Matrix& aTransform) const override;
  62
  63   bool StrokeContainsPoint(const StrokeOptions& aStrokeOptions,
  64                            const Point& aPoint,
  65                            const Matrix& aTransform) const override;
  66
  67   Rect GetBounds(const Matrix& aTransform = Matrix()) const override;
  68
  69   Rect GetStrokedBounds(const StrokeOptions& aStrokeOptions,
  70                         const Matrix& aTransform = Matrix()) const override;
  71
  72   void StreamToSink(PathSink* aSink) const override;
  73
  74   FillRule GetFillRule() const override { return mFillRule; }
  75
  76   void SetPathOnContext(cairo_t* aContext) const;
  77
  78   void AppendPathToBuilder(PathBuilderCairo* aBuilder,
  79                            const Matrix* aTransform = nullptr) const;
  80
  81  private:
  82   void EnsureContainingContext(const Matrix& aTransform) const;
  83
  84   FillRule mFillRule;
  85   std::vector<cairo_path_data_t> mPathData;
  86   mutable cairo_t* mContainingContext;
  87   mutable Matrix mContainingTransform;
  88   Point mCurrentPoint;
  89   Point mBeginPoint;
  90 };
  91
  92 }  // namespace gfx
  93 }  // namespace mozilla
  94
  95 #endif /* MOZILLA_GFX_PATH_CAIRO_H_ */