| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.systemui |
| |
| import android.animation.ArgbEvaluator |
| import android.content.Context |
| import android.view.ContextThemeWrapper |
| import com.android.settingslib.Utils |
| |
| /** |
| * A color blender for `Theme.SystemUI` and other themes. |
| * |
| * This class is used to handle colors from themes in [Context] in the following fashion: |
| * * The theme associated has a `darkIconTheme` and a `lightIconTheme` |
| * * Each of these themes define colors for the items `singleToneColor`, `backgroundColor`, |
| * and `fillColor`. |
| * |
| * In particular, `Theme.SystemUI` is a valid [Context]. If the provided [Context] does not have |
| * the correct themes, the colors that are not found will default to black. |
| * |
| * It provides a way to obtain these colors and blends for a given background intensity. |
| */ |
| class DualToneHandler(context: Context) { |
| private lateinit var darkColor: Color |
| private lateinit var lightColor: Color |
| |
| init { |
| setColorsFromContext(context) |
| } |
| |
| /** |
| * Sets the colors in this object from the given [Context] |
| * |
| * @param[context] A context with the appropriate themes to extract the colors from. |
| */ |
| fun setColorsFromContext(context: Context) { |
| val dualToneDarkTheme = ContextThemeWrapper(context, |
| Utils.getThemeAttr(context, R.attr.darkIconTheme)) |
| val dualToneLightTheme = ContextThemeWrapper(context, |
| Utils.getThemeAttr(context, R.attr.lightIconTheme)) |
| darkColor = Color( |
| Utils.getColorAttrDefaultColor(dualToneDarkTheme, R.attr.singleToneColor), |
| Utils.getColorAttrDefaultColor(dualToneDarkTheme, R.attr.backgroundColor), |
| Utils.getColorAttrDefaultColor(dualToneDarkTheme, R.attr.fillColor)) |
| lightColor = Color( |
| Utils.getColorAttrDefaultColor(dualToneLightTheme, R.attr.singleToneColor), |
| Utils.getColorAttrDefaultColor(dualToneLightTheme, R.attr.backgroundColor), |
| Utils.getColorAttrDefaultColor(dualToneLightTheme, R.attr.fillColor)) |
| } |
| |
| private fun getColorForDarkIntensity(darkIntensity: Float, lightColor: Int, darkColor: Int) = |
| ArgbEvaluator.getInstance().evaluate(darkIntensity, lightColor, darkColor) as Int |
| |
| /** |
| * Blends the single color associated with the light and dark theme |
| * |
| * @param[intensity] Intensity of the background. Correspond with the "percentage" of color |
| * from `darkIconTheme` to use |
| * @return The blended color |
| */ |
| fun getSingleColor(intensity: Float) = |
| getColorForDarkIntensity(intensity, lightColor.single, darkColor.single) |
| |
| /** |
| * Blends the background color associated with the light and dark theme |
| * |
| * @param[intensity] Intensity of the background. Correspond with the "percentage" of color |
| * from `darkIconTheme` to use |
| * @return The blended color |
| */ |
| fun getBackgroundColor(intensity: Float) = |
| getColorForDarkIntensity(intensity, lightColor.background, darkColor.background) |
| |
| /** |
| * Blends the fill color associated with the light and dark theme |
| * |
| * @param[intensity] Intensity of the background. Correspond with the "percentage" of color |
| * from `darkIconTheme` to use |
| * @return The blended color |
| */ |
| fun getFillColor(intensity: Float) = |
| getColorForDarkIntensity(intensity, lightColor.fill, darkColor.fill) |
| |
| private data class Color(val single: Int, val background: Int, val fill: Int) |
| } |