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_POINT_F_H_ 6 #define UI_GFX_POINT_F_H_ 7 8 #include <string> 9 10 #include "ui/base/ui_export.h" 11 #include "ui/gfx/point_base.h" 12 #include "ui/gfx/vector2d_f.h" 13 14 namespace gfx { 15 16 // A floating version of gfx::Point. 17 class UI_EXPORT PointF : public PointBase<PointF, float, Vector2dF> { 18 public: 19 PointF() : PointBase<PointF, float, Vector2dF>(0, 0) {} 20 PointF(float x, float y) : PointBase<PointF, float, Vector2dF>(x, y) {} 21 ~PointF() {} 22 23 void Scale(float scale) { 24 Scale(scale, scale); 25 } 26 27 void Scale(float x_scale, float y_scale) { 28 SetPoint(x() * x_scale, y() * y_scale); 29 } 30 31 // Returns a string representation of point. 32 std::string ToString() const; 33 }; 34 35 inline bool operator==(const PointF& lhs, const PointF& rhs) { 36 return lhs.x() == rhs.x() && lhs.y() == rhs.y(); 37 } 38 39 inline bool operator!=(const PointF& lhs, const PointF& rhs) { 40 return !(lhs == rhs); 41 } 42 43 inline PointF operator+(const PointF& lhs, const Vector2dF& rhs) { 44 PointF result(lhs); 45 result += rhs; 46 return result; 47 } 48 49 inline PointF operator-(const PointF& lhs, const Vector2dF& rhs) { 50 PointF result(lhs); 51 result -= rhs; 52 return result; 53 } 54 55 inline Vector2dF operator-(const PointF& lhs, const PointF& rhs) { 56 return Vector2dF(lhs.x() - rhs.x(), lhs.y() - rhs.y()); 57 } 58 59 inline PointF PointAtOffsetFromOrigin(const Vector2dF& offset_from_origin) { 60 return PointF(offset_from_origin.x(), offset_from_origin.y()); 61 } 62 63 UI_EXPORT PointF ScalePoint(const PointF& p, float x_scale, float y_scale); 64 65 inline PointF ScalePoint(const PointF& p, float scale) { 66 return ScalePoint(p, scale, scale); 67 } 68 69 #if !defined(COMPILER_MSVC) 70 extern template class PointBase<PointF, float, Vector2dF>; 71 #endif 72 73 } // namespace gfx 74 75 #endif // UI_GFX_POINT_F_H_ 76
