1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *       http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package androidx.core.graphics
18 
19 import android.graphics.Color
20 import android.graphics.ColorSpace
21 import androidx.test.filters.SdkSuppress
22 import androidx.test.filters.SmallTest
23 import org.junit.Assert.assertEquals
24 import org.junit.Assert.assertFalse
25 import org.junit.Assert.assertTrue
26 import org.junit.Test
27 
28 @SmallTest
29 class ColorTest {
30     @SdkSuppress(minSdkVersion = 26)
31     @Test
destructuringColornull32     fun destructuringColor() {
33         val (r, g, b, a) = 0x337f3010.toColor()
34         assertEquals(0.5f, r, 1e-2f)
35         assertEquals(0.19f, g, 1e-2f)
36         assertEquals(0.06f, b, 1e-2f)
37         assertEquals(0.2f, a, 1e-2f)
38     }
39 
40     @Test
destructuringIntnull41     fun destructuringInt() {
42         val (a, r, g, b) = 0x337f3010
43         assertEquals(0x33, a)
44         assertEquals(0x7f, r)
45         assertEquals(0x30, g)
46         assertEquals(0x10, b)
47     }
48 
49     @SdkSuppress(minSdkVersion = 26)
50     @Test
intToColornull51     fun intToColor() = assertEquals(Color.valueOf(0x337f3010), 0x337f3010.toColor())
52 
53     @SdkSuppress(minSdkVersion = 26)
54     @Test
55     fun intToColorLong() = assertEquals(Color.pack(0x337f3010), 0x337f3010.toColorLong())
56 
57     @Test fun alpha() = assertEquals(0x33, 0x337f3010.alpha)
58 
59     @Test fun red() = assertEquals(0x7f, 0x337f3010.red)
60 
61     @Test fun green() = assertEquals(0x30, 0x337f3010.green)
62 
63     @Test fun blue() = assertEquals(0x10, 0x337f3010.blue)
64 
65     @SdkSuppress(minSdkVersion = 26)
66     @Test
67     fun luminance() = assertEquals(0.212f, 0xff7f7f7f.toInt().luminance, 1e-3f)
68 
69     @SdkSuppress(minSdkVersion = 26)
70     @Test
71     fun longToColor() {
72         assertEquals(Color.valueOf(0x337f3010), Color.pack(0x337f3010).toColor())
73     }
74 
75     @SdkSuppress(minSdkVersion = 26)
76     @Test
longToColorIntnull77     fun longToColorInt() = assertEquals(0x337f3010, Color.pack(0x337f3010).toColorInt())
78 
79     @SdkSuppress(minSdkVersion = 26)
80     @Test
81     fun destructuringLong() {
82         val (r, g, b, a) = Color.pack(0x337f3010)
83         assertEquals(0.20f, a, 1e-2f)
84         assertEquals(0.50f, r, 1e-2f)
85         assertEquals(0.19f, g, 1e-2f)
86         assertEquals(0.06f, b, 1e-2f)
87     }
88 
89     @SdkSuppress(minSdkVersion = 26)
90     @Test
alphaLongnull91     fun alphaLong() = assertEquals(0.20f, Color.pack(0x337f3010).alpha, 1e-2f)
92 
93     @SdkSuppress(minSdkVersion = 26)
94     @Test
95     fun redLong() = assertEquals(0.50f, Color.pack(0x337f3010).red, 1e-2f)
96 
97     @SdkSuppress(minSdkVersion = 26)
98     @Test
99     fun greenLong() = assertEquals(0.19f, Color.pack(0x337f3010).green, 1e-2f)
100 
101     @SdkSuppress(minSdkVersion = 26)
102     @Test
103     fun blueLong() = assertEquals(0.06f, Color.pack(0x337f3010).blue, 1e-2f)
104 
105     @SdkSuppress(minSdkVersion = 26)
106     @Test
107     fun luminanceLong() {
108         assertEquals(0.212f, Color.pack(0xff7f7f7f.toInt()).luminance, 1e-3f)
109     }
110 
111     @SdkSuppress(minSdkVersion = 26)
112     @Test
isSrgbnull113     fun isSrgb() {
114         assertTrue(0x337f3010.toColorLong().isSrgb)
115         val c = Color.pack(1.0f, 0.0f, 0.0f, 1.0f, ColorSpace.get(ColorSpace.Named.BT2020))
116         assertFalse(c.isSrgb)
117     }
118 
119     @SdkSuppress(minSdkVersion = 26)
120     @Test
isWideGamutnull121     fun isWideGamut() {
122         assertFalse(0x337f3010.toColorLong().isWideGamut)
123         val c = Color.pack(1.0f, 0.0f, 0.0f, 1.0f, ColorSpace.get(ColorSpace.Named.BT2020))
124         assertTrue(c.isWideGamut)
125     }
126 
127     @SdkSuppress(minSdkVersion = 26)
128     @Test
getColorSpacenull129     fun getColorSpace() {
130         val sRGB = ColorSpace.get(ColorSpace.Named.SRGB)
131         assertEquals(sRGB, 0x337f3010.toColorLong().colorSpace)
132 
133         val bt2020 = ColorSpace.get(ColorSpace.Named.BT2020)
134         val c = Color.pack(1.0f, 0.0f, 0.0f, 1.0f, bt2020)
135         assertEquals(bt2020, c.colorSpace)
136     }
137 
138     @SdkSuppress(minSdkVersion = 26)
139     @Test
addColorsSameColorSpacenull140     fun addColorsSameColorSpace() {
141         val (r, g, b, a) = 0x7f7f0000.toColor() + 0x7f007f00.toColor()
142         assertEquals(0.16f, r, 1e-2f)
143         assertEquals(0.33f, g, 1e-2f)
144         assertEquals(0.00f, b, 1e-2f)
145         assertEquals(0.75f, a, 1e-2f)
146     }
147 
148     @SdkSuppress(minSdkVersion = 26)
149     @Test
colorConversionnull150     fun colorConversion() {
151         val bt2020 = ColorSpace.get(ColorSpace.Named.BT2020)
152 
153         // Test color ints
154         val c1 = 0x7f102030 convertTo ColorSpace.Named.BT2020
155         assertEquals(bt2020, c1.colorSpace)
156 
157         val c2 = 0x7f102030 convertTo bt2020
158         assertEquals(bt2020, c2.colorSpace)
159 
160         // Test color longs
161         val colorLong =
162             Color.pack(1.0f, 0.0f, 0.0f, 1.0f, ColorSpace.get(ColorSpace.Named.DISPLAY_P3))
163         val c3 = colorLong convertTo ColorSpace.Named.BT2020
164         assertEquals(bt2020, c3.colorSpace)
165 
166         val c4 = colorLong convertTo bt2020
167         assertEquals(bt2020, c4.colorSpace)
168 
169         // Test colors
170         val color = Color.valueOf(colorLong)
171         val c5 = color convertTo ColorSpace.Named.BT2020
172         assertEquals(bt2020, c5.colorSpace)
173 
174         val c6 = color convertTo bt2020
175         assertEquals(bt2020, c6.colorSpace)
176     }
177 
stringToColorIntnull178     @Test fun stringToColorInt() = assertEquals(Color.GREEN, "#00ff00".toColorInt())
179 }
180