| /* |
| * Copyright (C) 2013 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.internal.policy.impl; |
| |
| import android.app.StatusBarManager; |
| import android.os.Handler; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.util.Slog; |
| import android.view.View; |
| import android.view.WindowManager; |
| import android.view.WindowManagerPolicy.WindowState; |
| |
| import com.android.internal.statusbar.IStatusBarService; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * Controls state/behavior specific to a system bar window. |
| */ |
| public class BarController { |
| private static final boolean DEBUG = false; |
| |
| private static final int TRANSIENT_BAR_NONE = 0; |
| private static final int TRANSIENT_BAR_SHOW_REQUESTED = 1; |
| private static final int TRANSIENT_BAR_SHOWING = 2; |
| private static final int TRANSIENT_BAR_HIDING = 3; |
| |
| private static final int TRANSLUCENT_ANIMATION_DELAY_MS = 1000; |
| |
| private final String mTag; |
| private final int mTransientFlag; |
| private final int mUnhideFlag; |
| private final int mTranslucentFlag; |
| private final int mStatusBarManagerId; |
| private final int mTranslucentWmFlag; |
| private final Handler mHandler; |
| private final Object mServiceAquireLock = new Object(); |
| private IStatusBarService mStatusBarService; |
| |
| private WindowState mWin; |
| private int mState = StatusBarManager.WINDOW_STATE_SHOWING; |
| private int mTransientBarState; |
| private boolean mPendingShow; |
| private long mLastTranslucent; |
| |
| public BarController(String tag, int transientFlag, int unhideFlag, int translucentFlag, |
| int statusBarManagerId, int translucentWmFlag) { |
| mTag = "BarController." + tag; |
| mTransientFlag = transientFlag; |
| mUnhideFlag = unhideFlag; |
| mTranslucentFlag = translucentFlag; |
| mStatusBarManagerId = statusBarManagerId; |
| mTranslucentWmFlag = translucentWmFlag; |
| mHandler = new Handler(); |
| } |
| |
| public void setWindow(WindowState win) { |
| mWin = win; |
| } |
| |
| public void showTransient() { |
| if (mWin != null) { |
| setTransientBarState(TRANSIENT_BAR_SHOW_REQUESTED); |
| } |
| } |
| |
| public boolean isTransientShowing() { |
| return mTransientBarState == TRANSIENT_BAR_SHOWING; |
| } |
| |
| public boolean isTransientShowRequested() { |
| return mTransientBarState == TRANSIENT_BAR_SHOW_REQUESTED; |
| } |
| |
| public boolean wasRecentlyTranslucent() { |
| return (SystemClock.uptimeMillis() - mLastTranslucent) < TRANSLUCENT_ANIMATION_DELAY_MS; |
| } |
| |
| public void adjustSystemUiVisibilityLw(int oldVis, int vis) { |
| if (mWin != null && mTransientBarState == TRANSIENT_BAR_SHOWING && |
| (vis & mTransientFlag) == 0) { |
| // sysui requests hide |
| setTransientBarState(TRANSIENT_BAR_HIDING); |
| setBarShowingLw(false); |
| } else if (mWin != null && (oldVis & mUnhideFlag) != 0 && (vis & mUnhideFlag) == 0) { |
| // sysui ready to unhide |
| setBarShowingLw(true); |
| } |
| } |
| |
| public int applyTranslucentFlagLw(WindowState win, int vis, int oldVis) { |
| if (mWin != null) { |
| if (win != null && (win.getAttrs().privateFlags |
| & WindowManager.LayoutParams.PRIVATE_FLAG_INHERIT_TRANSLUCENT_DECOR) == 0) { |
| int fl = PolicyControl.getWindowFlags(win, null); |
| if ((fl & mTranslucentWmFlag) != 0) { |
| vis |= mTranslucentFlag; |
| } else { |
| vis &= ~mTranslucentFlag; |
| } |
| if ((fl & WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) != 0) { |
| vis |= View.SYSTEM_UI_TRANSPARENT; |
| } else { |
| vis &= ~View.SYSTEM_UI_TRANSPARENT; |
| } |
| } else { |
| vis = (vis & ~mTranslucentFlag) | (oldVis & mTranslucentFlag); |
| vis = (vis & ~View.SYSTEM_UI_TRANSPARENT) | (oldVis & View.SYSTEM_UI_TRANSPARENT); |
| } |
| } |
| return vis; |
| } |
| |
| public boolean setBarShowingLw(final boolean show) { |
| if (mWin == null) return false; |
| if (show && mTransientBarState == TRANSIENT_BAR_HIDING) { |
| mPendingShow = true; |
| return false; |
| } |
| final boolean wasVis = mWin.isVisibleLw(); |
| final boolean wasAnim = mWin.isAnimatingLw(); |
| final boolean change = show ? mWin.showLw(true) : mWin.hideLw(true); |
| final int state = computeStateLw(wasVis, wasAnim, mWin, change); |
| final boolean stateChanged = updateStateLw(state); |
| return change || stateChanged; |
| } |
| |
| private int computeStateLw(boolean wasVis, boolean wasAnim, WindowState win, boolean change) { |
| if (win.hasDrawnLw()) { |
| final boolean vis = win.isVisibleLw(); |
| final boolean anim = win.isAnimatingLw(); |
| if (mState == StatusBarManager.WINDOW_STATE_HIDING && !change && !vis) { |
| return StatusBarManager.WINDOW_STATE_HIDDEN; |
| } else if (mState == StatusBarManager.WINDOW_STATE_HIDDEN && vis) { |
| return StatusBarManager.WINDOW_STATE_SHOWING; |
| } else if (change) { |
| if (wasVis && vis && !wasAnim && anim) { |
| return StatusBarManager.WINDOW_STATE_HIDING; |
| } else { |
| return StatusBarManager.WINDOW_STATE_SHOWING; |
| } |
| } |
| } |
| return mState; |
| } |
| |
| private boolean updateStateLw(final int state) { |
| if (state != mState) { |
| mState = state; |
| if (DEBUG) Slog.d(mTag, "mState: " + StatusBarManager.windowStateToString(state)); |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| IStatusBarService statusbar = getStatusBarService(); |
| if (statusbar != null) { |
| statusbar.setWindowState(mStatusBarManagerId, state); |
| } |
| } catch (RemoteException e) { |
| if (DEBUG) Slog.w(mTag, "Error posting window state", e); |
| // re-acquire status bar service next time it is needed. |
| mStatusBarService = null; |
| } |
| } |
| }); |
| return true; |
| } |
| return false; |
| } |
| |
| public boolean checkHiddenLw() { |
| if (mWin != null && mWin.hasDrawnLw()) { |
| if (!mWin.isVisibleLw() && !mWin.isAnimatingLw()) { |
| updateStateLw(StatusBarManager.WINDOW_STATE_HIDDEN); |
| } |
| if (mTransientBarState == TRANSIENT_BAR_HIDING && !mWin.isVisibleLw()) { |
| // Finished animating out, clean up and reset style |
| setTransientBarState(TRANSIENT_BAR_NONE); |
| if (mPendingShow) { |
| setBarShowingLw(true); |
| mPendingShow = false; |
| } |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public boolean checkShowTransientBarLw() { |
| if (mTransientBarState == TRANSIENT_BAR_SHOWING) { |
| if (DEBUG) Slog.d(mTag, "Not showing transient bar, already shown"); |
| return false; |
| } else if (mTransientBarState == TRANSIENT_BAR_SHOW_REQUESTED) { |
| if (DEBUG) Slog.d(mTag, "Not showing transient bar, already requested"); |
| return false; |
| } else if (mWin == null) { |
| if (DEBUG) Slog.d(mTag, "Not showing transient bar, bar doesn't exist"); |
| return false; |
| } else if (mWin.isDisplayedLw()) { |
| if (DEBUG) Slog.d(mTag, "Not showing transient bar, bar already visible"); |
| return false; |
| } else { |
| return true; |
| } |
| } |
| |
| public int updateVisibilityLw(boolean transientAllowed, int oldVis, int vis) { |
| if (mWin == null) return vis; |
| if (isTransientShowing() || isTransientShowRequested()) { // transient bar requested |
| if (transientAllowed) { |
| vis |= mTransientFlag; |
| if ((oldVis & mTransientFlag) == 0) { |
| vis |= mUnhideFlag; // tell sysui we're ready to unhide |
| } |
| setTransientBarState(TRANSIENT_BAR_SHOWING); // request accepted |
| } else { |
| setTransientBarState(TRANSIENT_BAR_NONE); // request denied |
| } |
| } |
| if (mTransientBarState != TRANSIENT_BAR_NONE) { |
| vis |= mTransientFlag; // ignore clear requests until transition completes |
| vis &= ~View.SYSTEM_UI_FLAG_LOW_PROFILE; // never show transient bars in low profile |
| } |
| if ((vis & mTranslucentFlag) != 0 || (oldVis & mTranslucentFlag) != 0 || |
| ((vis | oldVis) & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0) { |
| mLastTranslucent = SystemClock.uptimeMillis(); |
| } |
| return vis; |
| } |
| |
| private void setTransientBarState(int state) { |
| if (mWin != null && state != mTransientBarState) { |
| if (mTransientBarState == TRANSIENT_BAR_SHOWING || state == TRANSIENT_BAR_SHOWING) { |
| mLastTranslucent = SystemClock.uptimeMillis(); |
| } |
| mTransientBarState = state; |
| if (DEBUG) Slog.d(mTag, "mTransientBarState: " + transientBarStateToString(state)); |
| } |
| } |
| |
| private IStatusBarService getStatusBarService() { |
| synchronized (mServiceAquireLock) { |
| if (mStatusBarService == null) { |
| mStatusBarService = IStatusBarService.Stub.asInterface( |
| ServiceManager.getService("statusbar")); |
| } |
| return mStatusBarService; |
| } |
| } |
| |
| private static String transientBarStateToString(int state) { |
| if (state == TRANSIENT_BAR_HIDING) return "TRANSIENT_BAR_HIDING"; |
| if (state == TRANSIENT_BAR_SHOWING) return "TRANSIENT_BAR_SHOWING"; |
| if (state == TRANSIENT_BAR_SHOW_REQUESTED) return "TRANSIENT_BAR_SHOW_REQUESTED"; |
| if (state == TRANSIENT_BAR_NONE) return "TRANSIENT_BAR_NONE"; |
| throw new IllegalArgumentException("Unknown state " + state); |
| } |
| |
| public void dump(PrintWriter pw, String prefix) { |
| if (mWin != null) { |
| pw.print(prefix); pw.println(mTag); |
| pw.print(prefix); pw.print(" "); pw.print("mState"); pw.print('='); |
| pw.println(StatusBarManager.windowStateToString(mState)); |
| pw.print(prefix); pw.print(" "); pw.print("mTransientBar"); pw.print('='); |
| pw.println(transientBarStateToString(mTransientBarState)); |
| } |
| } |
| } |
