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
12 namespace gfx {
13
14 namespace {
15
TestPointF(const PointF & p)16 int TestPointF(const PointF& p) {
17 return p.x();
18 }
19
20 } // namespace
21
TEST(PointTest,ToPointF)22 TEST(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
TEST(PointTest,IsOrigin)33 TEST(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
TEST(PointTest,VectorArithmetic)51 TEST(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
TEST(PointTest,OffsetFromPoint)73 TEST(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
TEST(PointTest,ToRoundedPoint)79 TEST(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
TEST(PointTest,Scale)99 TEST(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
TEST(PointTest,ClampPoint)121 TEST(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
TEST(PointTest,ClampPointF)147 TEST(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