173 lines
6.2 KiB
Java
173 lines
6.2 KiB
Java
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2017 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.util;
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import android.annotation.TargetApi;
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import android.os.Build;
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import android.os.Handler;
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import android.os.Looper;
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import android.view.Choreographer;
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import java.util.Map;
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import java.util.WeakHashMap;
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/**
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* Created by mariotaku on 2017/8/20.
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*/
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public abstract class ChoreographerCompat {
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private ChoreographerCompat() {
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}
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public abstract void postFrameCallback(ChoreographerCompat.FrameCallback callback);
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public abstract void postFrameCallbackDelayed(ChoreographerCompat.FrameCallback callback, long delayMillis);
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public abstract void removeFrameCallback(ChoreographerCompat.FrameCallback callback);
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public static ChoreographerCompat getInstance() {
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
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return ChoreographerCompatImpl.getCompatInstance();
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}
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return ChoreographerNativeDelegate.getNativeInstance();
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}
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public interface FrameCallback {
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void doFrame(long frameTimeNanos);
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}
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private static class ChoreographerCompatImpl extends ChoreographerCompat {
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private static final Map<Looper, ChoreographerCompat> sInstances = new WeakHashMap<>();
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private final Handler handler;
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ChoreographerCompatImpl(Looper looper) {
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handler = new Handler(looper);
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}
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@Override
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public void postFrameCallback(FrameCallback callback) {
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handler.postDelayed(CompatFrameCallbackWrapper.wrap(callback), 0);
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}
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@Override
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public void postFrameCallbackDelayed(FrameCallback callback, long delayMillis) {
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handler.postDelayed(CompatFrameCallbackWrapper.wrap(callback), delayMillis + 16);
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}
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@Override
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public void removeFrameCallback(FrameCallback callback) {
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handler.removeCallbacks(CompatFrameCallbackWrapper.wrap(callback));
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}
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static ChoreographerCompat getCompatInstance() {
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final Looper looper = Looper.myLooper();
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ChoreographerCompat instance = sInstances.get(looper);
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if (instance != null) return instance;
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instance = new ChoreographerCompatImpl(looper);
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sInstances.put(looper, instance);
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return instance;
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}
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private static class CompatFrameCallbackWrapper implements Runnable {
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private static final Map<FrameCallback, Runnable> sInstances = new WeakHashMap<>();
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private final FrameCallback callback;
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private CompatFrameCallbackWrapper(ChoreographerCompat.FrameCallback callback) {
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this.callback = callback;
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}
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@Override
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public void run() {
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callback.doFrame(System.nanoTime());
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}
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static Runnable wrap(FrameCallback callback) {
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Runnable wrapper = sInstances.get(callback);
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if (wrapper != null) return wrapper;
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wrapper = new CompatFrameCallbackWrapper(callback);
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sInstances.put(callback, wrapper);
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return wrapper;
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}
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}
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}
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@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
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private static class ChoreographerNativeDelegate extends ChoreographerCompat {
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private static final Map<Choreographer, ChoreographerCompat> sInstances = new WeakHashMap<>();
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private final Choreographer implementation;
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ChoreographerNativeDelegate(Choreographer implementation) {
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this.implementation = implementation;
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}
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public void postFrameCallback(ChoreographerCompat.FrameCallback callback) {
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implementation.postFrameCallback(NativeFrameCallbackWrapper.wrap(callback));
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}
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public void postFrameCallbackDelayed(ChoreographerCompat.FrameCallback callback, long delayMillis) {
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implementation.postFrameCallbackDelayed(NativeFrameCallbackWrapper.wrap(callback), delayMillis);
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}
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public void removeFrameCallback(ChoreographerCompat.FrameCallback callback) {
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implementation.removeFrameCallback(NativeFrameCallbackWrapper.wrap(callback));
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}
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static ChoreographerCompat getNativeInstance() {
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final Choreographer implementation = Choreographer.getInstance();
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ChoreographerCompat instance = sInstances.get(implementation);
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if (instance != null) return instance;
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instance = new ChoreographerNativeDelegate(implementation);
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sInstances.put(implementation, instance);
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return instance;
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}
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private static class NativeFrameCallbackWrapper implements Choreographer.FrameCallback {
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private static final Map<FrameCallback, Choreographer.FrameCallback> sInstances = new WeakHashMap<>();
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private final FrameCallback callback;
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private NativeFrameCallbackWrapper(ChoreographerCompat.FrameCallback callback) {
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this.callback = callback;
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}
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@Override
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public void doFrame(long frameTimeNanos) {
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callback.doFrame(frameTimeNanos);
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}
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static Choreographer.FrameCallback wrap(ChoreographerCompat.FrameCallback callback) {
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Choreographer.FrameCallback wrapper = sInstances.get(callback);
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if (wrapper != null) return wrapper;
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wrapper = new NativeFrameCallbackWrapper(callback);
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sInstances.put(callback, wrapper);
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return wrapper;
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}
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}
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}
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}
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