| /* |
| * 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.server.policy; |
| |
| import android.app.StatusBarManager; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.os.SystemClock; |
| import android.util.Slog; |
| import android.view.View; |
| import android.view.WindowManager; |
| import android.view.animation.Animation; |
| import android.view.animation.AnimationSet; |
| import android.view.animation.Interpolator; |
| import android.view.animation.TranslateAnimation; |
| |
| import com.android.internal.statusbar.IStatusBarService; |
| |
| import static android.view.WindowManagerInternal.*; |
| |
| /** |
| * Implements status bar specific behavior. |
| */ |
| public class StatusBarController extends BarController { |
| |
| private static final long TRANSITION_DURATION = 120L; |
| |
| private final AppTransitionListener mAppTransitionListener |
| = new AppTransitionListener() { |
| |
| @Override |
| public void onAppTransitionPendingLocked() { |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| IStatusBarService statusbar = getStatusBarService(); |
| if (statusbar != null) { |
| statusbar.appTransitionPending(); |
| } |
| } catch (RemoteException e) { |
| Slog.e(mTag, "RemoteException when app transition is pending", e); |
| // re-acquire status bar service next time it is needed. |
| mStatusBarService = null; |
| } |
| } |
| }); |
| } |
| |
| @Override |
| public void onAppTransitionStartingLocked(IBinder openToken, IBinder closeToken, |
| final Animation openAnimation, final Animation closeAnimation) { |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| IStatusBarService statusbar = getStatusBarService(); |
| if (statusbar != null) { |
| long startTime = calculateStatusBarTransitionStartTime(openAnimation, |
| closeAnimation); |
| statusbar.appTransitionStarting(startTime, TRANSITION_DURATION); |
| } |
| } catch (RemoteException e) { |
| Slog.e(mTag, "RemoteException when app transition is starting", e); |
| // re-acquire status bar service next time it is needed. |
| mStatusBarService = null; |
| } |
| } |
| }); |
| } |
| |
| @Override |
| public void onAppTransitionCancelledLocked() { |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| IStatusBarService statusbar = getStatusBarService(); |
| if (statusbar != null) { |
| statusbar.appTransitionCancelled(); |
| } |
| } catch (RemoteException e) { |
| Slog.e(mTag, "RemoteException when app transition is cancelled", e); |
| // re-acquire status bar service next time it is needed. |
| mStatusBarService = null; |
| } |
| } |
| }); |
| } |
| }; |
| |
| public StatusBarController() { |
| super("StatusBar", |
| View.STATUS_BAR_TRANSIENT, |
| View.STATUS_BAR_UNHIDE, |
| View.STATUS_BAR_TRANSLUCENT, |
| StatusBarManager.WINDOW_STATUS_BAR, |
| WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); |
| } |
| |
| public AppTransitionListener getAppTransitionListener() { |
| return mAppTransitionListener; |
| } |
| |
| /** |
| * For a given app transition with {@code openAnimation} and {@code closeAnimation}, this |
| * calculates the timings for the corresponding status bar transition. |
| * |
| * @return the desired start time of the status bar transition, in uptime millis |
| */ |
| private long calculateStatusBarTransitionStartTime(Animation openAnimation, |
| Animation closeAnimation) { |
| if (openAnimation != null && closeAnimation != null) { |
| TranslateAnimation openTranslateAnimation = findTranslateAnimation(openAnimation); |
| TranslateAnimation closeTranslateAnimation = findTranslateAnimation(closeAnimation); |
| if (openTranslateAnimation != null) { |
| |
| // Some interpolators are extremely quickly mostly finished, but not completely. For |
| // our purposes, we need to find the fraction for which ther interpolator is mostly |
| // there, and use that value for the calculation. |
| float t = findAlmostThereFraction(openTranslateAnimation.getInterpolator()); |
| return SystemClock.uptimeMillis() |
| + openTranslateAnimation.getStartOffset() |
| + (long)(openTranslateAnimation.getDuration()*t) - TRANSITION_DURATION; |
| } else if (closeTranslateAnimation != null) { |
| return SystemClock.uptimeMillis(); |
| } else { |
| return SystemClock.uptimeMillis(); |
| } |
| } else { |
| return SystemClock.uptimeMillis(); |
| } |
| } |
| |
| /** |
| * Tries to find a {@link TranslateAnimation} inside the {@code animation}. |
| * |
| * @return the found animation, {@code null} otherwise |
| */ |
| private TranslateAnimation findTranslateAnimation(Animation animation) { |
| if (animation instanceof TranslateAnimation) { |
| return (TranslateAnimation) animation; |
| } else if (animation instanceof AnimationSet) { |
| AnimationSet set = (AnimationSet) animation; |
| for (int i = 0; i < set.getAnimations().size(); i++) { |
| Animation a = set.getAnimations().get(i); |
| if (a instanceof TranslateAnimation) { |
| return (TranslateAnimation) a; |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Binary searches for a {@code t} such that there exists a {@code -0.01 < eps < 0.01} for which |
| * {@code interpolator(t + eps) > 0.99}. |
| */ |
| private float findAlmostThereFraction(Interpolator interpolator) { |
| float val = 0.5f; |
| float adj = 0.25f; |
| while (adj >= 0.01f) { |
| if (interpolator.getInterpolation(val) < 0.99f) { |
| val += adj; |
| } else { |
| val -= adj; |
| } |
| adj /= 2; |
| } |
| return val; |
| } |
| } |