/* * 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.wm; import com.android.internal.util.ToBooleanFunction; import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID; import static android.view.ViewGroup.LayoutParams.MATCH_PARENT; import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER; import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED; import static android.view.WindowManager.LayoutParams.TYPE_WALLPAPER; import static android.view.WindowManagerPolicy.FINISH_LAYOUT_REDO_WALLPAPER; import static com.android.server.wm.AppTransition.TRANSIT_FLAG_KEYGUARD_GOING_AWAY_WITH_WALLPAPER; import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_APP_TRANSITIONS; import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER; import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER_LIGHT; import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME; import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; import static com.android.server.wm.WindowManagerService.H.WALLPAPER_DRAW_PENDING_TIMEOUT; import android.os.Bundle; import android.os.Debug; import android.os.IBinder; import android.os.RemoteException; import android.os.SystemClock; import android.util.ArraySet; import android.util.Slog; import android.view.DisplayInfo; import android.view.WindowManager; import android.view.animation.Animation; import java.io.PrintWriter; import java.util.ArrayList; /** * Controls wallpaper windows visibility, ordering, and so on. * NOTE: All methods in this class must be called with the window manager service lock held. */ class WallpaperController { private static final String TAG = TAG_WITH_CLASS_NAME ? "WallpaperController" : TAG_WM; private WindowManagerService mService; private final ArrayList mWallpaperTokens = new ArrayList<>(); // If non-null, this is the currently visible window that is associated // with the wallpaper. private WindowState mWallpaperTarget = null; // If non-null, we are in the middle of animating from one wallpaper target // to another, and this is the previous wallpaper target. private WindowState mPrevWallpaperTarget = null; private int mWallpaperAnimLayerAdjustment; private float mLastWallpaperX = -1; private float mLastWallpaperY = -1; private float mLastWallpaperXStep = -1; private float mLastWallpaperYStep = -1; private int mLastWallpaperDisplayOffsetX = Integer.MIN_VALUE; private int mLastWallpaperDisplayOffsetY = Integer.MIN_VALUE; // This is set when we are waiting for a wallpaper to tell us it is done // changing its scroll position. private WindowState mWaitingOnWallpaper; // The last time we had a timeout when waiting for a wallpaper. private long mLastWallpaperTimeoutTime; // We give a wallpaper up to 150ms to finish scrolling. private static final long WALLPAPER_TIMEOUT = 150; // Time we wait after a timeout before trying to wait again. private static final long WALLPAPER_TIMEOUT_RECOVERY = 10000; // Set to the wallpaper window we would like to hide once the transition animations are done. // This is useful in cases where we don't want the wallpaper to be hidden when the close app // is a wallpaper target and is done animating out, but the opening app isn't a wallpaper // target and isn't done animating in. WindowState mDeferredHideWallpaper = null; // We give a wallpaper up to 500ms to finish drawing before playing app transitions. private static final long WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION = 500; private static final int WALLPAPER_DRAW_NORMAL = 0; private static final int WALLPAPER_DRAW_PENDING = 1; private static final int WALLPAPER_DRAW_TIMEOUT = 2; private int mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; private final FindWallpaperTargetResult mFindResults = new FindWallpaperTargetResult(); private final ToBooleanFunction mFindWallpaperTargetFunction = w -> { final WindowAnimator winAnimator = mService.mAnimator; if ((w.mAttrs.type == TYPE_WALLPAPER)) { if (mFindResults.topWallpaper == null || mFindResults.resetTopWallpaper) { mFindResults.setTopWallpaper(w); mFindResults.resetTopWallpaper = false; } return false; } mFindResults.resetTopWallpaper = true; if (w != winAnimator.mWindowDetachedWallpaper && w.mAppToken != null) { // If this window's app token is hidden and not animating, it is of no interest to us. if (w.mAppToken.hidden && w.mAppToken.mAppAnimator.animation == null) { if (DEBUG_WALLPAPER) Slog.v(TAG, "Skipping hidden and not animating token: " + w); return false; } } if (DEBUG_WALLPAPER) Slog.v(TAG, "Win " + w + ": isOnScreen=" + w.isOnScreen() + " mDrawState=" + w.mWinAnimator.mDrawState); if (w.mWillReplaceWindow && mWallpaperTarget == null && !mFindResults.useTopWallpaperAsTarget) { // When we are replacing a window and there was wallpaper before replacement, we want to // keep the window until the new windows fully appear and can determine the visibility, // to avoid flickering. mFindResults.setUseTopWallpaperAsTarget(true); } final boolean keyguardGoingAwayWithWallpaper = (w.mAppToken != null && AppTransition.isKeyguardGoingAwayTransit( w.mAppToken.mAppAnimator.getTransit()) && (w.mAppToken.mAppAnimator.getTransitFlags() & TRANSIT_FLAG_KEYGUARD_GOING_AWAY_WITH_WALLPAPER) != 0); boolean needsShowWhenLockedWallpaper = false; if ((w.mAttrs.flags & FLAG_SHOW_WHEN_LOCKED) != 0 && mService.mPolicy.isKeyguardLocked() && mService.mPolicy.isKeyguardOccluded()) { // The lowest show when locked window decides whether we need to put the wallpaper // behind. needsShowWhenLockedWallpaper = !isFullscreen(w.mAttrs) || (w.mAppToken != null && !w.mAppToken.fillsParent()); } if (keyguardGoingAwayWithWallpaper || needsShowWhenLockedWallpaper) { // Keep the wallpaper during Keyguard exit but also when it's needed for a // non-fullscreen show when locked activity. mFindResults.setUseTopWallpaperAsTarget(true); } final boolean hasWallpaper = (w.mAttrs.flags & FLAG_SHOW_WALLPAPER) != 0; if (hasWallpaper && w.isOnScreen() && (mWallpaperTarget == w || w.isDrawFinishedLw())) { if (DEBUG_WALLPAPER) Slog.v(TAG, "Found wallpaper target: " + w); mFindResults.setWallpaperTarget(w); if (w == mWallpaperTarget && w.mWinAnimator.isAnimationSet()) { // The current wallpaper target is animating, so we'll look behind it for // another possible target and figure out what is going on later. if (DEBUG_WALLPAPER) Slog.v(TAG, "Win " + w + ": token animating, looking behind."); } // Found a target! End search. return true; } else if (w == winAnimator.mWindowDetachedWallpaper) { if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "Found animating detached wallpaper target win: " + w); mFindResults.setUseTopWallpaperAsTarget(true); } return false; }; public WallpaperController(WindowManagerService service) { mService = service; } WindowState getWallpaperTarget() { return mWallpaperTarget; } boolean isWallpaperTarget(WindowState win) { return win == mWallpaperTarget; } boolean isBelowWallpaperTarget(WindowState win) { return mWallpaperTarget != null && mWallpaperTarget.mLayer >= win.mBaseLayer; } boolean isWallpaperVisible() { return isWallpaperVisible(mWallpaperTarget); } /** * Starts {@param a} on all wallpaper windows. */ void startWallpaperAnimation(Animation a) { for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); token.startAnimation(a); } } private boolean isWallpaperVisible(WindowState wallpaperTarget) { if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper vis: target " + wallpaperTarget + ", obscured=" + (wallpaperTarget != null ? Boolean.toString(wallpaperTarget.mObscured) : "??") + " anim=" + ((wallpaperTarget != null && wallpaperTarget.mAppToken != null) ? wallpaperTarget.mAppToken.mAppAnimator.animation : null) + " prev=" + mPrevWallpaperTarget); return (wallpaperTarget != null && (!wallpaperTarget.mObscured || (wallpaperTarget.mAppToken != null && wallpaperTarget.mAppToken.mAppAnimator.animation != null))) || mPrevWallpaperTarget != null; } boolean isWallpaperTargetAnimating() { return mWallpaperTarget != null && mWallpaperTarget.mWinAnimator.isAnimationSet() && !mWallpaperTarget.mWinAnimator.isDummyAnimation(); } void updateWallpaperVisibility() { final boolean visible = isWallpaperVisible(mWallpaperTarget); for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); token.updateWallpaperVisibility(visible); } } void hideDeferredWallpapersIfNeeded() { if (mDeferredHideWallpaper != null) { hideWallpapers(mDeferredHideWallpaper); mDeferredHideWallpaper = null; } } void hideWallpapers(final WindowState winGoingAway) { if (mWallpaperTarget != null && (mWallpaperTarget != winGoingAway || mPrevWallpaperTarget != null)) { return; } if (mService.mAppTransition.isRunning()) { // Defer hiding the wallpaper when app transition is running until the animations // are done. mDeferredHideWallpaper = winGoingAway; return; } final boolean wasDeferred = (mDeferredHideWallpaper == winGoingAway); for (int i = mWallpaperTokens.size() - 1; i >= 0; i--) { final WallpaperWindowToken token = mWallpaperTokens.get(i); token.hideWallpaperToken(wasDeferred, "hideWallpapers"); if (DEBUG_WALLPAPER_LIGHT && !token.hidden) Slog.d(TAG, "Hiding wallpaper " + token + " from " + winGoingAway + " target=" + mWallpaperTarget + " prev=" + mPrevWallpaperTarget + "\n" + Debug.getCallers(5, " ")); } } boolean updateWallpaperOffset(WindowState wallpaperWin, int dw, int dh, boolean sync) { boolean rawChanged = false; // Set the default wallpaper x-offset to either edge of the screen (depending on RTL), to // match the behavior of most Launchers float defaultWallpaperX = wallpaperWin.isRtl() ? 1f : 0f; float wpx = mLastWallpaperX >= 0 ? mLastWallpaperX : defaultWallpaperX; float wpxs = mLastWallpaperXStep >= 0 ? mLastWallpaperXStep : -1.0f; int availw = wallpaperWin.mFrame.right - wallpaperWin.mFrame.left - dw; int offset = availw > 0 ? -(int)(availw * wpx + .5f) : 0; if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE) { offset += mLastWallpaperDisplayOffsetX; } boolean changed = wallpaperWin.mXOffset != offset; if (changed) { if (DEBUG_WALLPAPER) Slog.v(TAG, "Update wallpaper " + wallpaperWin + " x: " + offset); wallpaperWin.mXOffset = offset; } if (wallpaperWin.mWallpaperX != wpx || wallpaperWin.mWallpaperXStep != wpxs) { wallpaperWin.mWallpaperX = wpx; wallpaperWin.mWallpaperXStep = wpxs; rawChanged = true; } float wpy = mLastWallpaperY >= 0 ? mLastWallpaperY : 0.5f; float wpys = mLastWallpaperYStep >= 0 ? mLastWallpaperYStep : -1.0f; int availh = wallpaperWin.mFrame.bottom - wallpaperWin.mFrame.top - dh; offset = availh > 0 ? -(int)(availh * wpy + .5f) : 0; if (mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { offset += mLastWallpaperDisplayOffsetY; } if (wallpaperWin.mYOffset != offset) { if (DEBUG_WALLPAPER) Slog.v(TAG, "Update wallpaper " + wallpaperWin + " y: " + offset); changed = true; wallpaperWin.mYOffset = offset; } if (wallpaperWin.mWallpaperY != wpy || wallpaperWin.mWallpaperYStep != wpys) { wallpaperWin.mWallpaperY = wpy; wallpaperWin.mWallpaperYStep = wpys; rawChanged = true; } if (rawChanged && (wallpaperWin.mAttrs.privateFlags & WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS) != 0) { try { if (DEBUG_WALLPAPER) Slog.v(TAG, "Report new wp offset " + wallpaperWin + " x=" + wallpaperWin.mWallpaperX + " y=" + wallpaperWin.mWallpaperY); if (sync) { mWaitingOnWallpaper = wallpaperWin; } wallpaperWin.mClient.dispatchWallpaperOffsets( wallpaperWin.mWallpaperX, wallpaperWin.mWallpaperY, wallpaperWin.mWallpaperXStep, wallpaperWin.mWallpaperYStep, sync); if (sync) { if (mWaitingOnWallpaper != null) { long start = SystemClock.uptimeMillis(); if ((mLastWallpaperTimeoutTime + WALLPAPER_TIMEOUT_RECOVERY) < start) { try { if (DEBUG_WALLPAPER) Slog.v(TAG, "Waiting for offset complete..."); mService.mWindowMap.wait(WALLPAPER_TIMEOUT); } catch (InterruptedException e) { } if (DEBUG_WALLPAPER) Slog.v(TAG, "Offset complete!"); if ((start + WALLPAPER_TIMEOUT) < SystemClock.uptimeMillis()) { Slog.i(TAG, "Timeout waiting for wallpaper to offset: " + wallpaperWin); mLastWallpaperTimeoutTime = start; } } mWaitingOnWallpaper = null; } } } catch (RemoteException e) { } } return changed; } void setWindowWallpaperPosition( WindowState window, float x, float y, float xStep, float yStep) { if (window.mWallpaperX != x || window.mWallpaperY != y) { window.mWallpaperX = x; window.mWallpaperY = y; window.mWallpaperXStep = xStep; window.mWallpaperYStep = yStep; updateWallpaperOffsetLocked(window, true); } } void setWindowWallpaperDisplayOffset(WindowState window, int x, int y) { if (window.mWallpaperDisplayOffsetX != x || window.mWallpaperDisplayOffsetY != y) { window.mWallpaperDisplayOffsetX = x; window.mWallpaperDisplayOffsetY = y; updateWallpaperOffsetLocked(window, true); } } Bundle sendWindowWallpaperCommand( WindowState window, String action, int x, int y, int z, Bundle extras, boolean sync) { if (window == mWallpaperTarget || window == mPrevWallpaperTarget) { boolean doWait = sync; for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); token.sendWindowWallpaperCommand(action, x, y, z, extras, sync); } if (doWait) { // TODO: Need to wait for result. } } return null; } private void updateWallpaperOffsetLocked(WindowState changingTarget, boolean sync) { final DisplayContent displayContent = changingTarget.getDisplayContent(); if (displayContent == null) { return; } final DisplayInfo displayInfo = displayContent.getDisplayInfo(); final int dw = displayInfo.logicalWidth; final int dh = displayInfo.logicalHeight; WindowState target = mWallpaperTarget; if (target != null) { if (target.mWallpaperX >= 0) { mLastWallpaperX = target.mWallpaperX; } else if (changingTarget.mWallpaperX >= 0) { mLastWallpaperX = changingTarget.mWallpaperX; } if (target.mWallpaperY >= 0) { mLastWallpaperY = target.mWallpaperY; } else if (changingTarget.mWallpaperY >= 0) { mLastWallpaperY = changingTarget.mWallpaperY; } if (target.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { mLastWallpaperDisplayOffsetX = target.mWallpaperDisplayOffsetX; } else if (changingTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { mLastWallpaperDisplayOffsetX = changingTarget.mWallpaperDisplayOffsetX; } if (target.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { mLastWallpaperDisplayOffsetY = target.mWallpaperDisplayOffsetY; } else if (changingTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { mLastWallpaperDisplayOffsetY = changingTarget.mWallpaperDisplayOffsetY; } if (target.mWallpaperXStep >= 0) { mLastWallpaperXStep = target.mWallpaperXStep; } else if (changingTarget.mWallpaperXStep >= 0) { mLastWallpaperXStep = changingTarget.mWallpaperXStep; } if (target.mWallpaperYStep >= 0) { mLastWallpaperYStep = target.mWallpaperYStep; } else if (changingTarget.mWallpaperYStep >= 0) { mLastWallpaperYStep = changingTarget.mWallpaperYStep; } } for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { mWallpaperTokens.get(curTokenNdx).updateWallpaperOffset(dw, dh, sync); } } void clearLastWallpaperTimeoutTime() { mLastWallpaperTimeoutTime = 0; } void wallpaperCommandComplete(IBinder window) { if (mWaitingOnWallpaper != null && mWaitingOnWallpaper.mClient.asBinder() == window) { mWaitingOnWallpaper = null; mService.mWindowMap.notifyAll(); } } void wallpaperOffsetsComplete(IBinder window) { if (mWaitingOnWallpaper != null && mWaitingOnWallpaper.mClient.asBinder() == window) { mWaitingOnWallpaper = null; mService.mWindowMap.notifyAll(); } } int getAnimLayerAdjustment() { return mWallpaperAnimLayerAdjustment; } private void findWallpaperTarget(DisplayContent dc) { mFindResults.reset(); if (dc.isStackVisible(FREEFORM_WORKSPACE_STACK_ID)) { // In freeform mode we set the wallpaper as its own target, so we don't need an // additional window to make it visible. mFindResults.setUseTopWallpaperAsTarget(true); } dc.forAllWindows(mFindWallpaperTargetFunction, true /* traverseTopToBottom */); if (mFindResults.wallpaperTarget == null && mFindResults.useTopWallpaperAsTarget) { mFindResults.setWallpaperTarget(mFindResults.topWallpaper); } } private boolean isFullscreen(WindowManager.LayoutParams attrs) { return attrs.x == 0 && attrs.y == 0 && attrs.width == MATCH_PARENT && attrs.height == MATCH_PARENT; } /** Updates the target wallpaper if needed and returns true if an update happened. */ private void updateWallpaperWindowsTarget(DisplayContent dc, FindWallpaperTargetResult result) { WindowState wallpaperTarget = result.wallpaperTarget; if (mWallpaperTarget == wallpaperTarget || (mPrevWallpaperTarget != null && mPrevWallpaperTarget == wallpaperTarget)) { if (mPrevWallpaperTarget == null) { return; } // Is it time to stop animating? if (!mPrevWallpaperTarget.isAnimatingLw()) { if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "No longer animating wallpaper targets!"); mPrevWallpaperTarget = null; mWallpaperTarget = wallpaperTarget; } return; } if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "New wallpaper target: " + wallpaperTarget + " prevTarget: " + mWallpaperTarget); mPrevWallpaperTarget = null; final WindowState prevWallpaperTarget = mWallpaperTarget; mWallpaperTarget = wallpaperTarget; if (wallpaperTarget == null || prevWallpaperTarget == null) { return; } // Now what is happening... if the current and new targets are animating, // then we are in our super special mode! boolean oldAnim = prevWallpaperTarget.isAnimatingLw(); boolean foundAnim = wallpaperTarget.isAnimatingLw(); if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "New animation: " + foundAnim + " old animation: " + oldAnim); if (!foundAnim || !oldAnim) { return; } if (dc.getWindow(w -> w == prevWallpaperTarget) == null) { return; } final boolean newTargetHidden = wallpaperTarget.mAppToken != null && wallpaperTarget.mAppToken.hiddenRequested; final boolean oldTargetHidden = prevWallpaperTarget.mAppToken != null && prevWallpaperTarget.mAppToken.hiddenRequested; if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "Animating wallpapers:" + " old: " + prevWallpaperTarget + " hidden=" + oldTargetHidden + " new: " + wallpaperTarget + " hidden=" + newTargetHidden); mPrevWallpaperTarget = prevWallpaperTarget; if (newTargetHidden && !oldTargetHidden) { if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "Old wallpaper still the target."); // Use the old target if new target is hidden but old target // is not. If they're both hidden, still use the new target. mWallpaperTarget = prevWallpaperTarget; } else if (newTargetHidden == oldTargetHidden && !mService.mOpeningApps.contains(wallpaperTarget.mAppToken) && (mService.mOpeningApps.contains(prevWallpaperTarget.mAppToken) || mService.mClosingApps.contains(prevWallpaperTarget.mAppToken))) { // If they're both hidden (or both not hidden), prefer the one that's currently in // opening or closing app list, this allows transition selection logic to better // determine the wallpaper status of opening/closing apps. mWallpaperTarget = prevWallpaperTarget; } result.setWallpaperTarget(wallpaperTarget); } private void updateWallpaperTokens(boolean visible) { for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); token.updateWallpaperWindows(visible, mWallpaperAnimLayerAdjustment); token.getDisplayContent().assignWindowLayers(false); } } void adjustWallpaperWindows(DisplayContent dc) { mService.mRoot.mWallpaperMayChange = false; // First find top-most window that has asked to be on top of the wallpaper; // all wallpapers go behind it. findWallpaperTarget(dc); updateWallpaperWindowsTarget(dc, mFindResults); // The window is visible to the compositor...but is it visible to the user? // That is what the wallpaper cares about. final boolean visible = mWallpaperTarget != null && isWallpaperVisible(mWallpaperTarget); if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper visibility: " + visible); if (visible) { // If the wallpaper target is animating, we may need to copy its layer adjustment. // Only do this if we are not transferring between two wallpaper targets. mWallpaperAnimLayerAdjustment = (mPrevWallpaperTarget == null && mWallpaperTarget.mAppToken != null) ? mWallpaperTarget.mAppToken.getAnimLayerAdjustment() : 0; if (mWallpaperTarget.mWallpaperX >= 0) { mLastWallpaperX = mWallpaperTarget.mWallpaperX; mLastWallpaperXStep = mWallpaperTarget.mWallpaperXStep; } if (mWallpaperTarget.mWallpaperY >= 0) { mLastWallpaperY = mWallpaperTarget.mWallpaperY; mLastWallpaperYStep = mWallpaperTarget.mWallpaperYStep; } if (mWallpaperTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { mLastWallpaperDisplayOffsetX = mWallpaperTarget.mWallpaperDisplayOffsetX; } if (mWallpaperTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { mLastWallpaperDisplayOffsetY = mWallpaperTarget.mWallpaperDisplayOffsetY; } } updateWallpaperTokens(visible); if (DEBUG_WALLPAPER_LIGHT) Slog.d(TAG, "New wallpaper: target=" + mWallpaperTarget + " prev=" + mPrevWallpaperTarget); } boolean processWallpaperDrawPendingTimeout() { if (mWallpaperDrawState == WALLPAPER_DRAW_PENDING) { mWallpaperDrawState = WALLPAPER_DRAW_TIMEOUT; if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, "*** WALLPAPER DRAW TIMEOUT"); return true; } return false; } boolean wallpaperTransitionReady() { boolean transitionReady = true; boolean wallpaperReady = true; for (int curTokenIndex = mWallpaperTokens.size() - 1; curTokenIndex >= 0 && wallpaperReady; curTokenIndex--) { final WallpaperWindowToken token = mWallpaperTokens.get(curTokenIndex); if (token.hasVisibleNotDrawnWallpaper()) { // We've told this wallpaper to be visible, but it is not drawn yet wallpaperReady = false; if (mWallpaperDrawState != WALLPAPER_DRAW_TIMEOUT) { // wait for this wallpaper until it is drawn or timeout transitionReady = false; } if (mWallpaperDrawState == WALLPAPER_DRAW_NORMAL) { mWallpaperDrawState = WALLPAPER_DRAW_PENDING; mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); mService.mH.sendEmptyMessageDelayed(WALLPAPER_DRAW_PENDING_TIMEOUT, WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION); } if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper should be visible but has not been drawn yet. " + "mWallpaperDrawState=" + mWallpaperDrawState); break; } } if (wallpaperReady) { mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); } return transitionReady; } /** * Adjusts the wallpaper windows if the input display has a pending wallpaper layout or one of * the opening apps should be a wallpaper target. */ void adjustWallpaperWindowsForAppTransitionIfNeeded(DisplayContent dc, ArraySet openingApps) { boolean adjust = false; if ((dc.pendingLayoutChanges & FINISH_LAYOUT_REDO_WALLPAPER) != 0) { adjust = true; } else { for (int i = openingApps.size() - 1; i >= 0; --i) { final AppWindowToken token = openingApps.valueAt(i); if (token.windowsCanBeWallpaperTarget()) { adjust = true; break; } } } if (adjust) { adjustWallpaperWindows(dc); } } void addWallpaperToken(WallpaperWindowToken token) { mWallpaperTokens.add(token); } void removeWallpaperToken(WallpaperWindowToken token) { mWallpaperTokens.remove(token); } void dump(PrintWriter pw, String prefix) { pw.print(prefix); pw.print("mWallpaperTarget="); pw.println(mWallpaperTarget); if (mPrevWallpaperTarget != null) { pw.print(prefix); pw.print("mPrevWallpaperTarget="); pw.println(mPrevWallpaperTarget); } pw.print(prefix); pw.print("mLastWallpaperX="); pw.print(mLastWallpaperX); pw.print(" mLastWallpaperY="); pw.println(mLastWallpaperY); if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE || mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { pw.print(prefix); pw.print("mLastWallpaperDisplayOffsetX="); pw.print(mLastWallpaperDisplayOffsetX); pw.print(" mLastWallpaperDisplayOffsetY="); pw.println(mLastWallpaperDisplayOffsetY); } if (mWallpaperAnimLayerAdjustment != 0) { pw.println(prefix + "mWallpaperAnimLayerAdjustment=" + mWallpaperAnimLayerAdjustment); } } /** Helper class for storing the results of a wallpaper target find operation. */ final private static class FindWallpaperTargetResult { WindowState topWallpaper = null; boolean useTopWallpaperAsTarget = false; WindowState wallpaperTarget = null; boolean resetTopWallpaper = false; void setTopWallpaper(WindowState win) { topWallpaper = win; } void setWallpaperTarget(WindowState win) { wallpaperTarget = win; } void setUseTopWallpaperAsTarget(boolean topWallpaperAsTarget) { useTopWallpaperAsTarget = topWallpaperAsTarget; } void reset() { topWallpaper = null; wallpaperTarget = null; useTopWallpaperAsTarget = false; resetTopWallpaper = false; } } }