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
17package androidx.core.graphics
18
19import android.graphics.Color
20import android.graphics.ColorSpace
21import android.support.test.filters.SdkSuppress
22import org.junit.Assert.assertEquals
23import org.junit.Assert.assertFalse
24import org.junit.Assert.assertTrue
25import org.junit.Test
26
27class ColorTest {
28    @SdkSuppress(minSdkVersion = 26)
29    @Test fun destructuringColor() {
30        val (r, g, b, a) = 0x337f3010.toColor()
31        assertEquals(0.5f, r, 1e-2f)
32        assertEquals(0.19f, g, 1e-2f)
33        assertEquals(0.06f, b, 1e-2f)
34        assertEquals(0.2f, a, 1e-2f)
35    }
36
37    @Test fun destructuringInt() {
38        val (a, r, g, b) = 0x337f3010
39        assertEquals(0x33, a)
40        assertEquals(0x7f, r)
41        assertEquals(0x30, g)
42        assertEquals(0x10, b)
43    }
44
45    @SdkSuppress(minSdkVersion = 26)
46    @Test fun intToColor() = assertEquals(Color.valueOf(0x337f3010), 0x337f3010.toColor())
47
48    @SdkSuppress(minSdkVersion = 26)
49    @Test fun intToColorLong() = assertEquals(Color.pack(0x337f3010), 0x337f3010.toColorLong())
50
51    @Test fun alpha() = assertEquals(0x33, 0x337f3010.alpha)
52    @Test fun red() = assertEquals(0x7f, 0x337f3010.red)
53    @Test fun green() = assertEquals(0x30, 0x337f3010.green)
54    @Test fun blue() = assertEquals(0x10, 0x337f3010.blue)
55
56    @SdkSuppress(minSdkVersion = 26)
57    @Test fun luminance() = assertEquals(0.212f, 0xff7f7f7f.toInt().luminance, 1e-3f)
58
59    @SdkSuppress(minSdkVersion = 26)
60    @Test fun longToColor() {
61        assertEquals(Color.valueOf(0x337f3010), Color.pack(0x337f3010).toColor())
62    }
63
64    @SdkSuppress(minSdkVersion = 26)
65    @Test fun longToColorInt() = assertEquals(0x337f3010, Color.pack(0x337f3010).toColorInt())
66
67    @SdkSuppress(minSdkVersion = 26)
68    @Test fun destructuringLong() {
69        val (r, g, b, a) = Color.pack(0x337f3010)
70        assertEquals(0.20f, a, 1e-2f)
71        assertEquals(0.50f, r, 1e-2f)
72        assertEquals(0.19f, g, 1e-2f)
73        assertEquals(0.06f, b, 1e-2f)
74    }
75
76    @SdkSuppress(minSdkVersion = 26)
77    @Test fun alphaLong() = assertEquals(0.20f, Color.pack(0x337f3010).alpha, 1e-2f)
78
79    @SdkSuppress(minSdkVersion = 26)
80    @Test fun redLong() = assertEquals(0.50f, Color.pack(0x337f3010).red, 1e-2f)
81
82    @SdkSuppress(minSdkVersion = 26)
83    @Test fun greenLong() = assertEquals(0.19f, Color.pack(0x337f3010).green, 1e-2f)
84
85    @SdkSuppress(minSdkVersion = 26)
86    @Test fun blueLong() = assertEquals(0.06f, Color.pack(0x337f3010).blue, 1e-2f)
87
88    @SdkSuppress(minSdkVersion = 26)
89    @Test fun luminanceLong() {
90        assertEquals(0.212f, Color.pack(0xff7f7f7f.toInt()).luminance, 1e-3f)
91    }
92
93    @SdkSuppress(minSdkVersion = 26)
94    @Test fun isSrgb() {
95        assertTrue(0x337f3010.toColorLong().isSrgb)
96        val c = Color.pack(1.0f, 0.0f, 0.0f, 1.0f, ColorSpace.get(ColorSpace.Named.BT2020))
97        assertFalse(c.isSrgb)
98    }
99
100    @SdkSuppress(minSdkVersion = 26)
101    @Test fun isWideGamut() {
102        assertFalse(0x337f3010.toColorLong().isWideGamut)
103        val c = Color.pack(1.0f, 0.0f, 0.0f, 1.0f, ColorSpace.get(ColorSpace.Named.BT2020))
104        assertTrue(c.isWideGamut)
105    }
106
107    @SdkSuppress(minSdkVersion = 26)
108    @Test fun getColorSpace() {
109        val sRGB = ColorSpace.get(ColorSpace.Named.SRGB)
110        assertEquals(sRGB, 0x337f3010.toColorLong().colorSpace)
111
112        val bt2020 = ColorSpace.get(ColorSpace.Named.BT2020)
113        val c = Color.pack(1.0f, 0.0f, 0.0f, 1.0f, bt2020)
114        assertEquals(bt2020, c.colorSpace)
115    }
116
117    @SdkSuppress(minSdkVersion = 26)
118    @Test fun addColorsSameColorSpace() {
119        val (r, g, b, a) = 0x7f7f0000.toColor() + 0x7f007f00.toColor()
120        assertEquals(0.16f, r, 1e-2f)
121        assertEquals(0.33f, g, 1e-2f)
122        assertEquals(0.00f, b, 1e-2f)
123        assertEquals(0.75f, a, 1e-2f)
124    }
125
126    @Test fun stringToColorInt() = assertEquals(Color.GREEN, "#00ff00".toColorInt())
127}
128