Jorim Jaggi | 86b273f | 2015-07-14 18:08:43 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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; |
| 18 | |
Adrian Roos | 79bacbb | 2016-10-26 11:00:12 -0700 | [diff] [blame] | 19 | import com.android.systemui.util.Assert; |
| 20 | |
Jorim Jaggi | 86b273f | 2015-07-14 18:08:43 -0700 | [diff] [blame] | 21 | import android.os.Handler; |
Jorim Jaggi | 86b273f | 2015-07-14 18:08:43 -0700 | [diff] [blame] | 22 | import android.view.Choreographer; |
| 23 | |
| 24 | import java.util.ArrayList; |
| 25 | |
| 26 | /** |
| 27 | * Utility class for methods used to dejank the UI. |
| 28 | */ |
| 29 | public class DejankUtils { |
| 30 | |
| 31 | private static final Choreographer sChoreographer = Choreographer.getInstance(); |
| 32 | private static final Handler sHandler = new Handler(); |
| 33 | |
| 34 | private static final ArrayList<Runnable> sPendingRunnables = new ArrayList<>(); |
| 35 | |
| 36 | private static final Runnable sAnimationCallbackRunnable = new Runnable() { |
| 37 | @Override |
| 38 | public void run() { |
| 39 | for (int i = 0; i < sPendingRunnables.size(); i++) { |
| 40 | sHandler.post(sPendingRunnables.get(i)); |
| 41 | } |
| 42 | sPendingRunnables.clear(); |
| 43 | } |
| 44 | }; |
| 45 | |
| 46 | /** |
| 47 | * Executes {@code r} after performTraversals. Use this do to CPU heavy work for which the |
| 48 | * timing is not critical for animation. The work is then scheduled at the same time |
| 49 | * RenderThread is doing its thing, leading to better parallelization. |
| 50 | * |
| 51 | * <p>Needs to be called from the main thread. |
| 52 | */ |
| 53 | public static void postAfterTraversal(Runnable r) { |
Adrian Roos | 79bacbb | 2016-10-26 11:00:12 -0700 | [diff] [blame] | 54 | Assert.isMainThread(); |
Jorim Jaggi | 86b273f | 2015-07-14 18:08:43 -0700 | [diff] [blame] | 55 | sPendingRunnables.add(r); |
| 56 | postAnimationCallback(); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Removes a previously scheduled runnable. |
| 61 | * |
| 62 | * <p>Needs to be called from the main thread. |
| 63 | */ |
| 64 | public static void removeCallbacks(Runnable r) { |
Adrian Roos | 79bacbb | 2016-10-26 11:00:12 -0700 | [diff] [blame] | 65 | Assert.isMainThread(); |
Jorim Jaggi | 86b273f | 2015-07-14 18:08:43 -0700 | [diff] [blame] | 66 | sPendingRunnables.remove(r); |
| 67 | sHandler.removeCallbacks(r); |
| 68 | } |
| 69 | |
| 70 | private static void postAnimationCallback() { |
| 71 | sChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, sAnimationCallbackRunnable, |
| 72 | null); |
| 73 | } |
Jorim Jaggi | 86b273f | 2015-07-14 18:08:43 -0700 | [diff] [blame] | 74 | } |