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
23 /** Returns an ARGB color version of [color] at the given [alpha]. */
getColorWithAlphanull24 fun getColorWithAlpha(color: Int, alpha: Float): Int =
25 Color.argb(
26 (alpha * 255).toInt(),
27 Color.red(color),
28 Color.green(color),
29 Color.blue(color)
30 )
31
32
33 /**
34 * Returns the color provided at the specified {@param attrIndex} in {@param a} if it exists,
35 * otherwise, returns the color from the private attribute {@param privAttrId}.
36 */
37 fun getPrivateAttrColorIfUnset(
38 ctw: ContextThemeWrapper, attrArray: TypedArray,
39 attrIndex: Int, defColor: Int, privAttrId: Int
40 ): Int {
41 // If the index is specified, use that value
42 var a = attrArray
43 if (a.hasValue(attrIndex)) {
44 return a.getColor(attrIndex, defColor)
45 }
46
47 // Otherwise fallback to the value of the private attribute
48 val customAttrs = intArrayOf(privAttrId)
49 a = ctw.obtainStyledAttributes(customAttrs)
50 val color = a.getColor(0, defColor)
51 a.recycle()
52 return color
53 }
54