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/gfx/gfx_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 GFX_EXPORT PointF : public PointBase<PointF, float, Vector2dF> {
18 public:
PointF()19 PointF() : PointBase<PointF, float, Vector2dF>(0, 0) {}
PointF(float x,float y)20 PointF(float x, float y) : PointBase<PointF, float, Vector2dF>(x, y) {}
~PointF()21 ~PointF() {}
22
Scale(float scale)23 void Scale(float scale) {
24 Scale(scale, scale);
25 }
26
Scale(float x_scale,float y_scale)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
PointAtOffsetFromOrigin(const Vector2dF & offset_from_origin)59 inline PointF PointAtOffsetFromOrigin(const Vector2dF& offset_from_origin) {
60 return PointF(offset_from_origin.x(), offset_from_origin.y());
61 }
62
63 GFX_EXPORT PointF ScalePoint(const PointF& p, float x_scale, float y_scale);
64
ScalePoint(const PointF & p,float scale)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