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 "ui/gfx/point_base.h"
6
7#include "base/basictypes.h"
8#include "testing/gtest/include/gtest/gtest.h"
9#include "ui/gfx/point.h"
10#include "ui/gfx/point_conversions.h"
11#include "ui/gfx/point_f.h"
12
13namespace gfx {
14
15namespace {
16
17int TestPointF(const PointF& p) {
18  return p.x();
19}
20
21}  // namespace
22
23TEST(PointTest, ToPointF) {
24  // Check that implicit conversion from integer to float compiles.
25  Point a(10, 20);
26  float x = TestPointF(a);
27  EXPECT_EQ(x, a.x());
28
29  PointF b(10, 20);
30  EXPECT_EQ(a, b);
31  EXPECT_EQ(b, a);
32}
33
34TEST(PointTest, IsOrigin) {
35  EXPECT_FALSE(Point(1, 0).IsOrigin());
36  EXPECT_FALSE(Point(0, 1).IsOrigin());
37  EXPECT_FALSE(Point(1, 2).IsOrigin());
38  EXPECT_FALSE(Point(-1, 0).IsOrigin());
39  EXPECT_FALSE(Point(0, -1).IsOrigin());
40  EXPECT_FALSE(Point(-1, -2).IsOrigin());
41  EXPECT_TRUE(Point(0, 0).IsOrigin());
42
43  EXPECT_FALSE(PointF(0.1f, 0).IsOrigin());
44  EXPECT_FALSE(PointF(0, 0.1f).IsOrigin());
45  EXPECT_FALSE(PointF(0.1f, 2).IsOrigin());
46  EXPECT_FALSE(PointF(-0.1f, 0).IsOrigin());
47  EXPECT_FALSE(PointF(0, -0.1f).IsOrigin());
48  EXPECT_FALSE(PointF(-0.1f, -2).IsOrigin());
49  EXPECT_TRUE(PointF(0, 0).IsOrigin());
50}
51
52TEST(PointTest, VectorArithmetic) {
53  Point a(1, 5);
54  Vector2d v1(3, -3);
55  Vector2d v2(-8, 1);
56
57  static const struct {
58    Point expected;
59    Point actual;
60  } tests[] = {
61    { Point(4, 2), a + v1 },
62    { Point(-2, 8), a - v1 },
63    { a, a - v1 + v1 },
64    { a, a + v1 - v1 },
65    { a, a + Vector2d() },
66    { Point(12, 1), a + v1 - v2 },
67    { Point(-10, 9), a - v1 + v2 }
68  };
69
70  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i)
71    EXPECT_EQ(tests[i].expected.ToString(), tests[i].actual.ToString());
72}
73
74TEST(PointTest, OffsetFromPoint) {
75  Point a(1, 5);
76  Point b(-20, 8);
77  EXPECT_EQ(Vector2d(-20 - 1, 8 - 5).ToString(), (b - a).ToString());
78}
79
80TEST(PointTest, ToRoundedPoint) {
81  EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0, 0)));
82  EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0.0001f, 0.0001f)));
83  EXPECT_EQ(Point(0, 0), ToRoundedPoint(PointF(0.4999f, 0.4999f)));
84  EXPECT_EQ(Point(1, 1), ToRoundedPoint(PointF(0.5f, 0.5f)));
85  EXPECT_EQ(Point(1, 1), ToRoundedPoint(PointF(0.9999f, 0.9999f)));
86
87  EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10, 10)));
88  EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10.0001f, 10.0001f)));
89  EXPECT_EQ(Point(10, 10), ToRoundedPoint(PointF(10.4999f, 10.4999f)));
90  EXPECT_EQ(Point(11, 11), ToRoundedPoint(PointF(10.5f, 10.5f)));
91  EXPECT_EQ(Point(11, 11), ToRoundedPoint(PointF(10.9999f, 10.9999f)));
92
93  EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10, -10)));
94  EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10.0001f, -10.0001f)));
95  EXPECT_EQ(Point(-10, -10), ToRoundedPoint(PointF(-10.4999f, -10.4999f)));
96  EXPECT_EQ(Point(-11, -11), ToRoundedPoint(PointF(-10.5f, -10.5f)));
97  EXPECT_EQ(Point(-11, -11), ToRoundedPoint(PointF(-10.9999f, -10.9999f)));
98}
99
100TEST(PointTest, Scale) {
101  EXPECT_EQ(PointF().ToString(), ScalePoint(Point(), 2).ToString());
102  EXPECT_EQ(PointF().ToString(), ScalePoint(Point(), 2, 2).ToString());
103
104  EXPECT_EQ(PointF(2, -2).ToString(),
105            ScalePoint(Point(1, -1), 2).ToString());
106  EXPECT_EQ(PointF(2, -2).ToString(),
107            ScalePoint(Point(1, -1), 2, 2).ToString());
108
109  PointF zero;
110  PointF one(1, -1);
111
112  zero.Scale(2);
113  zero.Scale(3, 1.5);
114
115  one.Scale(2);
116  one.Scale(3, 1.5);
117
118  EXPECT_EQ(PointF().ToString(), zero.ToString());
119  EXPECT_EQ(PointF(6, -3).ToString(), one.ToString());
120}
121
122TEST(PointTest, ClampPoint) {
123  Point a;
124
125  a = Point(3, 5);
126  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
127  a.SetToMax(Point(2, 4));
128  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
129  a.SetToMax(Point(3, 5));
130  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
131  a.SetToMax(Point(4, 2));
132  EXPECT_EQ(Point(4, 5).ToString(), a.ToString());
133  a.SetToMax(Point(8, 10));
134  EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
135
136  a.SetToMin(Point(9, 11));
137  EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
138  a.SetToMin(Point(8, 10));
139  EXPECT_EQ(Point(8, 10).ToString(), a.ToString());
140  a.SetToMin(Point(11, 9));
141  EXPECT_EQ(Point(8, 9).ToString(), a.ToString());
142  a.SetToMin(Point(7, 11));
143  EXPECT_EQ(Point(7, 9).ToString(), a.ToString());
144  a.SetToMin(Point(3, 5));
145  EXPECT_EQ(Point(3, 5).ToString(), a.ToString());
146}
147
148TEST(PointTest, ClampPointF) {
149  PointF a;
150
151  a = PointF(3.5f, 5.5f);
152  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
153  a.SetToMax(PointF(2.5f, 4.5f));
154  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
155  a.SetToMax(PointF(3.5f, 5.5f));
156  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
157  a.SetToMax(PointF(4.5f, 2.5f));
158  EXPECT_EQ(PointF(4.5f, 5.5f).ToString(), a.ToString());
159  a.SetToMax(PointF(8.5f, 10.5f));
160  EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
161
162  a.SetToMin(PointF(9.5f, 11.5f));
163  EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
164  a.SetToMin(PointF(8.5f, 10.5f));
165  EXPECT_EQ(PointF(8.5f, 10.5f).ToString(), a.ToString());
166  a.SetToMin(PointF(11.5f, 9.5f));
167  EXPECT_EQ(PointF(8.5f, 9.5f).ToString(), a.ToString());
168  a.SetToMin(PointF(7.5f, 11.5f));
169  EXPECT_EQ(PointF(7.5f, 9.5f).ToString(), a.ToString());
170  a.SetToMin(PointF(3.5f, 5.5f));
171  EXPECT_EQ(PointF(3.5f, 5.5f).ToString(), a.ToString());
172}
173
174}  // namespace gfx
175