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      1 /*
      2  * Copyright (C) 2016 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.server.wm;
     18 
     19 import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD;
     20 import static android.view.WindowManager.LayoutParams.TYPE_WALLPAPER;
     21 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_ADD_REMOVE;
     22 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_LAYERS;
     23 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER_LIGHT;
     24 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WINDOW_MOVEMENT;
     25 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME;
     26 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
     27 
     28 import android.os.Bundle;
     29 import android.os.IBinder;
     30 import android.os.RemoteException;
     31 import android.util.Slog;
     32 import android.view.DisplayInfo;
     33 import android.view.animation.Animation;
     34 
     35 /**
     36  * A token that represents a set of wallpaper windows.
     37  */
     38 class WallpaperWindowToken extends WindowToken {
     39 
     40     private static final String TAG = TAG_WITH_CLASS_NAME ? "WallpaperWindowToken" : TAG_WM;
     41 
     42     WallpaperWindowToken(WindowManagerService service, IBinder token, boolean explicit,
     43             DisplayContent dc, boolean ownerCanManageAppTokens) {
     44         super(service, token, TYPE_WALLPAPER, explicit, dc, ownerCanManageAppTokens);
     45         dc.mWallpaperController.addWallpaperToken(this);
     46     }
     47 
     48     @Override
     49     void setExiting() {
     50         super.setExiting();
     51         mDisplayContent.mWallpaperController.removeWallpaperToken(this);
     52     }
     53 
     54     void hideWallpaperToken(boolean wasDeferred, String reason) {
     55         for (int j = mChildren.size() - 1; j >= 0; j--) {
     56             final WindowState wallpaper = mChildren.get(j);
     57             wallpaper.hideWallpaperWindow(wasDeferred, reason);
     58         }
     59         hidden = true;
     60     }
     61 
     62     void sendWindowWallpaperCommand(
     63             String action, int x, int y, int z, Bundle extras, boolean sync) {
     64         for (int wallpaperNdx = mChildren.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) {
     65             final WindowState wallpaper = mChildren.get(wallpaperNdx);
     66             try {
     67                 wallpaper.mClient.dispatchWallpaperCommand(action, x, y, z, extras, sync);
     68                 // We only want to be synchronous with one wallpaper.
     69                 sync = false;
     70             } catch (RemoteException e) {
     71             }
     72         }
     73     }
     74 
     75     void updateWallpaperOffset(int dw, int dh, boolean sync) {
     76         final WallpaperController wallpaperController = mDisplayContent.mWallpaperController;
     77         for (int wallpaperNdx = mChildren.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) {
     78             final WindowState wallpaper = mChildren.get(wallpaperNdx);
     79             if (wallpaperController.updateWallpaperOffset(wallpaper, dw, dh, sync)) {
     80                 final WindowStateAnimator winAnimator = wallpaper.mWinAnimator;
     81                 winAnimator.computeShownFrameLocked();
     82                 // No need to lay out the windows - we can just set the wallpaper position directly.
     83                 winAnimator.setWallpaperOffset(wallpaper.mShownPosition);
     84                 // We only want to be synchronous with one wallpaper.
     85                 sync = false;
     86             }
     87         }
     88     }
     89 
     90     void updateWallpaperVisibility(boolean visible) {
     91         final DisplayInfo displayInfo = mDisplayContent.getDisplayInfo();
     92         final int dw = displayInfo.logicalWidth;
     93         final int dh = displayInfo.logicalHeight;
     94 
     95         if (hidden == visible) {
     96             hidden = !visible;
     97             // Need to do a layout to ensure the wallpaper now has the correct size.
     98             mDisplayContent.setLayoutNeeded();
     99         }
    100 
    101         final WallpaperController wallpaperController = mDisplayContent.mWallpaperController;
    102         for (int wallpaperNdx = mChildren.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) {
    103             final WindowState wallpaper = mChildren.get(wallpaperNdx);
    104             if (visible) {
    105                 wallpaperController.updateWallpaperOffset(wallpaper, dw, dh, false);
    106             }
    107 
    108             wallpaper.dispatchWallpaperVisibility(visible);
    109         }
    110     }
    111 
    112     /**
    113      * Starts {@param anim} on all children.
    114      */
    115     void startAnimation(Animation anim) {
    116         for (int ndx = mChildren.size() - 1; ndx >= 0; ndx--) {
    117             final WindowState windowState = mChildren.get(ndx);
    118             windowState.mWinAnimator.setAnimation(anim);
    119         }
    120     }
    121 
    122     void updateWallpaperWindows(boolean visible, int animLayerAdj) {
    123 
    124         if (hidden == visible) {
    125             if (DEBUG_WALLPAPER_LIGHT) Slog.d(TAG,
    126                     "Wallpaper token " + token + " hidden=" + !visible);
    127             hidden = !visible;
    128             // Need to do a layout to ensure the wallpaper now has the correct size.
    129             mDisplayContent.setLayoutNeeded();
    130         }
    131 
    132         final DisplayInfo displayInfo = mDisplayContent.getDisplayInfo();
    133         final int dw = displayInfo.logicalWidth;
    134         final int dh = displayInfo.logicalHeight;
    135         final WallpaperController wallpaperController = mDisplayContent.mWallpaperController;
    136         for (int wallpaperNdx = mChildren.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) {
    137             final WindowState wallpaper = mChildren.get(wallpaperNdx);
    138 
    139             if (visible) {
    140                 wallpaperController.updateWallpaperOffset(wallpaper, dw, dh, false);
    141             }
    142 
    143             // First, make sure the client has the current visibility state.
    144             wallpaper.dispatchWallpaperVisibility(visible);
    145 
    146             if (DEBUG_LAYERS || DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "adjustWallpaper win "
    147                     + wallpaper + " anim layer: " + wallpaper.mWinAnimator.mAnimLayer);
    148         }
    149     }
    150 
    151     boolean hasVisibleNotDrawnWallpaper() {
    152         for (int j = mChildren.size() - 1; j >= 0; --j) {
    153             final WindowState wallpaper = mChildren.get(j);
    154             if (wallpaper.hasVisibleNotDrawnWallpaper()) {
    155                 return true;
    156             }
    157         }
    158         return false;
    159     }
    160 
    161     @Override
    162     public String toString() {
    163         if (stringName == null) {
    164             StringBuilder sb = new StringBuilder();
    165             sb.append("WallpaperWindowToken{");
    166             sb.append(Integer.toHexString(System.identityHashCode(this)));
    167             sb.append(" token="); sb.append(token); sb.append('}');
    168             stringName = sb.toString();
    169         }
    170         return stringName;
    171     }
    172 }
    173