16fbfe4e14
Root cause: There is a bunch of different logic of preferences in CaptionAppearanceFragment. It’s hard to implement new features and hard to maintain and hard to be testable. Solution: Move out color and edge preference logic of CaptionAppearanceFragment into controllers to reduce the complexity of the relationship between preference and fragment. Bug: 197695932 Test: make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.accessibility Change-Id: I8ed80b445a0d376a7e9dda87feda82420a78a9da
89 lines
3.0 KiB
Java
89 lines
3.0 KiB
Java
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.accessibility;
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import android.graphics.Color;
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import android.view.accessibility.CaptioningManager.CaptionStyle;
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/** Provides utility methods related caption. */
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public final class CaptionUtils {
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/**
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* Unpacks the specified color value to get the color value.
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*
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* @param value the specified color value.
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*/
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public static int parseColor(int value) {
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final int colorValue;
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if (!CaptionStyle.hasColor(value)) {
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// "Default" color with variable alpha.
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colorValue = CaptionStyle.COLOR_UNSPECIFIED;
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} else if ((value >>> 24) == 0) {
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// "None" color with variable alpha.
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colorValue = Color.TRANSPARENT;
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} else {
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// Normal color.
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colorValue = value | 0xFF000000;
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}
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return colorValue;
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}
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/**
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* Unpacks the specified color value to get the opacity value.
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*
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* @param value the specified color value.
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*/
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public static int parseOpacity(int value) {
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final int opacityValue;
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if (!CaptionStyle.hasColor(value)) {
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// "Default" color with variable alpha.
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opacityValue = (value & 0xFF) << 24;
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} else if ((value >>> 24) == 0) {
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// "None" color with variable alpha.
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opacityValue = (value & 0xFF) << 24;
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} else {
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// Normal color.
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opacityValue = value & 0xFF000000;
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}
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// Opacity value is always white.
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return opacityValue | 0xFFFFFF;
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}
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/**
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* Packs the specified color value and specified opacity value into merged color value.
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*
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* @param colorValue the color value.
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* @param opacityValue the opacity value.
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*/
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public static int mergeColorOpacity(int colorValue, int opacityValue) {
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final int value;
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// "Default" is 0x00FFFFFF or, for legacy support, 0x00000100.
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if (!CaptionStyle.hasColor(colorValue)) {
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// Encode "default" as 0x00FFFFaa.
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value = 0x00FFFF00 | Color.alpha(opacityValue);
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} else if (colorValue == Color.TRANSPARENT) {
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// Encode "none" as 0x000000aa.
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value = Color.alpha(opacityValue);
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} else {
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// Encode custom color normally.
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value = (colorValue & 0x00FFFFFF) | (opacityValue & 0xFF000000);
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}
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return value;
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}
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}
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