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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef UI_GFX_PATH_H_
      6 #define UI_GFX_PATH_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "third_party/skia/include/core/SkPath.h"
     10 #include "ui/gfx/gfx_export.h"
     11 #include "ui/gfx/native_widget_types.h"
     12 
     13 namespace gfx {
     14 
     15 class GFX_EXPORT Path : public SkPath {
     16  public:
     17   // Used by Path(Point,size_t) constructor.
     18   struct Point {
     19     int x;
     20     int y;
     21   };
     22   struct PointF {
     23     float x;
     24     float y;
     25   };
     26 
     27   Path();
     28 
     29   // Creates a path populated with the specified points.
     30   Path(const Point* points, size_t count);
     31   Path(const PointF* points, size_t count);
     32 
     33   ~Path();
     34 
     35 #if defined(USE_AURA) || defined(USE_X11)
     36   // Creates a NativeRegion from the path. The caller is responsible for freeing
     37   // resources used by this region. This only supports polygon paths.
     38   NativeRegion CreateNativeRegion() const;
     39 
     40   // Returns the intersection of the two regions. The caller owns the returned
     41   // object.
     42   static gfx::NativeRegion IntersectRegions(gfx::NativeRegion r1,
     43                                             gfx::NativeRegion r2);
     44 
     45   // Returns the union of the two regions. The caller owns the returned object.
     46   static gfx::NativeRegion CombineRegions(gfx::NativeRegion r1,
     47                                           gfx::NativeRegion r2);
     48 
     49   // Returns the difference of the two regions. The caller owns the returned
     50   // object.
     51   static gfx::NativeRegion SubtractRegion(gfx::NativeRegion r1,
     52                                           gfx::NativeRegion r2);
     53 #endif
     54 
     55  private:
     56   DISALLOW_COPY_AND_ASSIGN(Path);
     57 };
     58 
     59 }
     60 
     61 #endif  // UI_GFX_PATH_H_
     62