1 /*
2 * Copyright (C) 2022 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 com.android.systemui.util
18
19 import android.content.res.TypedArray
20 import android.graphics.Color
21 import android.view.ContextThemeWrapper
22 import androidx.annotation.ColorInt
23
24 /** Returns an ARGB color version of [color] at the given [alpha]. */
getColorWithAlphanull25 fun getColorWithAlpha(color: Int, alpha: Float): Int =
26 Color.argb(
27 (alpha * 255).toInt(),
28 Color.red(color),
29 Color.green(color),
30 Color.blue(color)
31 )
32
33
34 /**
35 * Returns the color provided at the specified {@param attrIndex} in {@param a} if it exists,
36 * otherwise, returns the color from the private attribute {@param privAttrId}.
37 */
38 fun getPrivateAttrColorIfUnset(
39 ctw: ContextThemeWrapper,
40 attrArray: TypedArray,
41 attrIndex: Int,
42 defColor: Int,
43 privAttrId: Int
44 ): Int {
45 // If the index is specified, use that value
46 var a = attrArray
47 if (a.hasValue(attrIndex)) {
48 return a.getColor(attrIndex, defColor)
49 }
50
51 // Otherwise fallback to the value of the private attribute
52 val customAttrs = intArrayOf(privAttrId)
53 a = ctw.obtainStyledAttributes(customAttrs)
54 val color = a.getColor(0, defColor)
55 a.recycle()
56 return color
57 }
58
59 /** Returns the color as a HTML hex color (or null) */
hexColorStringnull60 fun hexColorString(@ColorInt color: Int?): String = color
61 ?.let { String.format("#%08x", it) }
62 ?: "null"
63