| /* |
| * Copyright (C) 2015 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.statusbar.notification; |
| |
| import android.graphics.Color; |
| import android.widget.ImageView; |
| |
| import com.android.internal.util.NotificationColorUtil; |
| import com.android.systemui.R; |
| |
| /** |
| * A util class for various reusable functions |
| */ |
| public class NotificationUtils { |
| public static boolean isGrayscale(ImageView v, NotificationColorUtil colorUtil) { |
| Object isGrayscale = v.getTag(R.id.icon_is_grayscale); |
| if (isGrayscale != null) { |
| return Boolean.TRUE.equals(isGrayscale); |
| } |
| boolean grayscale = colorUtil.isGrayscaleIcon(v.getDrawable()); |
| v.setTag(R.id.icon_is_grayscale, grayscale); |
| return grayscale; |
| } |
| |
| public static float interpolate(float start, float end, float amount) { |
| return start * (1.0f - amount) + end * amount; |
| } |
| |
| public static int interpolateColors(int startColor, int endColor, float amount) { |
| return Color.argb( |
| (int) interpolate(Color.alpha(startColor), Color.alpha(endColor), amount), |
| (int) interpolate(Color.red(startColor), Color.red(endColor), amount), |
| (int) interpolate(Color.green(startColor), Color.green(endColor), amount), |
| (int) interpolate(Color.blue(startColor), Color.blue(endColor), amount)); |
| } |
| } |