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#include "base/basictypes.h"
6#include "testing/gtest/include/gtest/gtest.h"
7#include "ui/gfx/geometry/point.h"
8#include "ui/gfx/geometry/point_base.h"
9#include "ui/gfx/geometry/point_conversions.h"
10#include "ui/gfx/geometry/point_f.h"
11
12namespace gfx {
13
14namespace {
15
16int TestPointF(const PointF& p) {
17  return p.x();
18}
19
20}  // namespace
21
22TEST(PointTest, ToPointF) {
23  // Check that implicit conversion from integer to float compiles.
24  Point a(10, 20);
25  float x = TestPointF(a);
26  EXPECT_EQ(x, a.x());
27
28  PointF b(10, 20);
29  EXPECT_EQ(a, b);
30  EXPECT_EQ(b, a);
31}
32
33TEST(PointTest, IsOrigin) {
34  EXPECT_FALSE(Point(1, 0).IsOrigin());
35  EXPECT_FALSE(Point(0, 1).IsOrigin());
36  EXPECT_FALSE(Point(1, 2).IsOrigin());
37  EXPECT_FALSE(Point(-1, 0).IsOrigin());
38  EXPECT_FALSE(Point(0, -1).IsOrigin());
39  EXPECT_FALSE(Point(-1, -2).IsOrigin());
40  EXPECT_TRUE(Point(0, 0).IsOrigin());
41
42  EXPECT_FALSE(PointF(0.1f, 0).IsOrigin());
43  EXPECT_FALSE(PointF(0, 0.1f).IsOrigin());
44  EXPECT_FALSE(PointF(0.1f, 2).IsOrigin());
45  EXPECT_FALSE(PointF(-0.1f, 0).IsOrigin());
46  EXPECT_FALSE(PointF(0, -0.1f).IsOrigin());
47  EXPECT_FALSE(PointF(-0.1f, -2).IsOrigin());
48  EXPECT_TRUE(PointF(0, 0).IsOrigin());
49}
50
51TEST(PointTest, VectorArithmetic) {
52  Point a(1, 5);
53  Vector2d v1(3, -3);
54  Vector2d v2(-8, 1);
55
56  static const struct {
57    Point expected;
58    Point actual;
59  } tests[] = {
60    { Point(4, 2), a + v1 },
61    { Point(-2, 8), a - v1 },
62    { a, a - v1 + v1 },
63    { a, a + v1 - v1 },
64    { a, a + Vector2d() },
65    { Point(12, 1), a + v1 - v2 },
66    { Point(-10, 9), a - v1 + v2 }
67  };
68
69  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i)
70    EXPECT_EQ(tests[i].expected.ToString(), tests[i].actual.ToString());
71}
72
73TEST(PointTest, OffsetFromPoint) {
74  Point a(1, 5);
75  Point b(-20, 8);
76  EXPECT_EQ(Vector2d(-20 - 1, 8 - 5).ToString(), (b - a).ToString());
77}
78
79TEST(PointTest, ToRoundedPoint) {
80  EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0, 0)));
81  EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0.0001f, 0.0001f)));
82  EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0.4999f, 0.4999f)));
83  EXPECT_EQ(Point(1, 1), ToRoundedPoint(PointF(0.5f, 0.5f)));
84  EXPECT_EQ(Point(1, 1), ToRoundedPoint(PointF(0.9999f, 0.9999f)));
85
86  EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10, 10)));
87  EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10.0001f, 10.0001f)));
88  EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10.4999f, 10.4999f)));
89  EXPECT_EQ(Point(11, 11), ToRoundedPoint(PointF(10.5f, 10.5f)));
90  EXPECT_EQ(Point(11, 11), ToRoundedPoint(PointF(10.9999f, 10.9999f)));
91
92  EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10, -10)));
93  EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10.0001f, -10.0001f)));
94  EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10.4999f, -10.4999f)));
95  EXPECT_EQ(Point(-11, -11), ToRoundedPoint(PointF(-10.5f, -10.5f)));
96  EXPECT_EQ(Point(-11, -11), ToRoundedPoint(PointF(-10.9999f, -10.9999f)));
97}
98
99TEST(PointTest, Scale) {
100  EXPECT_EQ(PointF().ToString(), ScalePoint(Point(), 2).ToString());
101  EXPECT_EQ(PointF().ToString(), ScalePoint(Point(), 2, 2).ToString());
102
103  EXPECT_EQ(PointF(2, -2).ToString(),
104            ScalePoint(Point(1, -1), 2).ToString());
105  EXPECT_EQ(PointF(2, -2).ToString(),
106            ScalePoint(Point(1, -1), 2, 2).ToString());
107
108  PointF zero;
109  PointF one(1, -1);
110
111  zero.Scale(2);
112  zero.Scale(3, 1.5);
113
114  one.Scale(2);
115  one.Scale(3, 1.5);
116
117  EXPECT_EQ(PointF().ToString(), zero.ToString());
118  EXPECT_EQ(PointF(6, -3).ToString(), one.ToString());
119}
120
121TEST(PointTest, ClampPoint) {
122  Point a;
123
124  a = Point(3, 5);
125  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
126  a.SetToMax(Point(2, 4));
127  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
128  a.SetToMax(Point(3, 5));
129  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
130  a.SetToMax(Point(4, 2));
131  EXPECT_EQ(Point(4, 5).ToString(), a.ToString());
132  a.SetToMax(Point(8, 10));
133  EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
134
135  a.SetToMin(Point(9, 11));
136  EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
137  a.SetToMin(Point(8, 10));
138  EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
139  a.SetToMin(Point(11, 9));
140  EXPECT_EQ(Point(8, 9).ToString(), a.ToString());
141  a.SetToMin(Point(7, 11));
142  EXPECT_EQ(Point(7, 9).ToString(), a.ToString());
143  a.SetToMin(Point(3, 5));
144  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
145}
146
147TEST(PointTest, ClampPointF) {
148  PointF a;
149
150  a = PointF(3.5f, 5.5f);
151  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
152  a.SetToMax(PointF(2.5f, 4.5f));
153  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
154  a.SetToMax(PointF(3.5f, 5.5f));
155  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
156  a.SetToMax(PointF(4.5f, 2.5f));
157  EXPECT_EQ(PointF(4.5f, 5.5f).ToString(), a.ToString());
158  a.SetToMax(PointF(8.5f, 10.5f));
159  EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
160
161  a.SetToMin(PointF(9.5f, 11.5f));
162  EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
163  a.SetToMin(PointF(8.5f, 10.5f));
164  EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
165  a.SetToMin(PointF(11.5f, 9.5f));
166  EXPECT_EQ(PointF(8.5f, 9.5f).ToString(), a.ToString());
167  a.SetToMin(PointF(7.5f, 11.5f));
168  EXPECT_EQ(PointF(7.5f, 9.5f).ToString(), a.ToString());
169  a.SetToMin(PointF(3.5f, 5.5f));
170  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
171}
172
173}  // namespace gfx
174