WallpaperController.java revision caa53afa0cae85a69da1b5bfb9b8368b152c917b
1/* 2 * Copyright (C) 2015 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 17package com.android.server.wm; 18 19import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID; 20import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER; 21import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD; 22import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_STARTING; 23import static android.view.WindowManager.LayoutParams.TYPE_KEYGUARD_SCRIM; 24import static android.view.WindowManager.LayoutParams.TYPE_WALLPAPER; 25import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_ADD_REMOVE; 26import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_APP_TRANSITIONS; 27import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_LAYERS; 28import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WINDOW_MOVEMENT; 29import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_VISIBILITY; 30import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER; 31import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER_LIGHT; 32import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME; 33import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; 34import static com.android.server.wm.WindowManagerService.H.WALLPAPER_DRAW_PENDING_TIMEOUT; 35import static com.android.server.wm.WindowManagerService.TYPE_LAYER_MULTIPLIER; 36import static com.android.server.wm.WindowManagerService.TYPE_LAYER_OFFSET; 37 38import android.os.Bundle; 39import android.os.Debug; 40import android.os.IBinder; 41import android.os.RemoteException; 42import android.os.SystemClock; 43import android.util.Slog; 44import android.view.DisplayInfo; 45import android.view.WindowManager; 46import android.view.WindowManagerPolicy; 47 48import java.io.PrintWriter; 49import java.util.ArrayList; 50 51/** 52 * Controls wallpaper windows visibility, ordering, and so on. 53 * NOTE: All methods in this class must be called with the window manager service lock held. 54 */ 55class WallpaperController { 56 private static final String TAG = TAG_WITH_CLASS_NAME ? "WallpaperController" : TAG_WM; 57 final private WindowManagerService mService; 58 59 private final ArrayList<WindowToken> mWallpaperTokens = new ArrayList<>(); 60 61 // If non-null, this is the currently visible window that is associated 62 // with the wallpaper. 63 private WindowState mWallpaperTarget = null; 64 // If non-null, we are in the middle of animating from one wallpaper target 65 // to another, and this is the lower one in Z-order. 66 private WindowState mLowerWallpaperTarget = null; 67 // If non-null, we are in the middle of animating from one wallpaper target 68 // to another, and this is the higher one in Z-order. 69 private WindowState mUpperWallpaperTarget = null; 70 71 private int mWallpaperAnimLayerAdjustment; 72 73 private float mLastWallpaperX = -1; 74 private float mLastWallpaperY = -1; 75 private float mLastWallpaperXStep = -1; 76 private float mLastWallpaperYStep = -1; 77 private int mLastWallpaperDisplayOffsetX = Integer.MIN_VALUE; 78 private int mLastWallpaperDisplayOffsetY = Integer.MIN_VALUE; 79 80 // This is set when we are waiting for a wallpaper to tell us it is done 81 // changing its scroll position. 82 WindowState mWaitingOnWallpaper; 83 84 // The last time we had a timeout when waiting for a wallpaper. 85 private long mLastWallpaperTimeoutTime; 86 // We give a wallpaper up to 150ms to finish scrolling. 87 private static final long WALLPAPER_TIMEOUT = 150; 88 // Time we wait after a timeout before trying to wait again. 89 private static final long WALLPAPER_TIMEOUT_RECOVERY = 10000; 90 91 // Set to the wallpaper window we would like to hide once the transition animations are done. 92 // This is useful in cases where we don't want the wallpaper to be hidden when the close app 93 // is a wallpaper target and is done animating out, but the opening app isn't a wallpaper 94 // target and isn't done animating in. 95 private WindowState mDeferredHideWallpaper = null; 96 97 // We give a wallpaper up to 500ms to finish drawing before playing app transitions. 98 private static final long WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION = 500; 99 private static final int WALLPAPER_DRAW_NORMAL = 0; 100 private static final int WALLPAPER_DRAW_PENDING = 1; 101 private static final int WALLPAPER_DRAW_TIMEOUT = 2; 102 private int mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; 103 104 private final FindWallpaperTargetResult mFindResults = new FindWallpaperTargetResult(); 105 106 public WallpaperController(WindowManagerService service) { 107 mService = service; 108 } 109 110 WindowState getWallpaperTarget() { 111 return mWallpaperTarget; 112 } 113 114 WindowState getLowerWallpaperTarget() { 115 return mLowerWallpaperTarget; 116 } 117 118 WindowState getUpperWallpaperTarget() { 119 return mUpperWallpaperTarget; 120 } 121 122 boolean isWallpaperTarget(WindowState win) { 123 return win == mWallpaperTarget; 124 } 125 126 boolean isBelowWallpaperTarget(WindowState win) { 127 return mWallpaperTarget != null && mWallpaperTarget.mLayer >= win.mBaseLayer; 128 } 129 130 boolean isWallpaperVisible() { 131 return isWallpaperVisible(mWallpaperTarget); 132 } 133 134 private boolean isWallpaperVisible(WindowState wallpaperTarget) { 135 if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper vis: target " + wallpaperTarget + ", obscured=" 136 + (wallpaperTarget != null ? Boolean.toString(wallpaperTarget.mObscured) : "??") 137 + " anim=" + ((wallpaperTarget != null && wallpaperTarget.mAppToken != null) 138 ? wallpaperTarget.mAppToken.mAppAnimator.animation : null) 139 + " upper=" + mUpperWallpaperTarget 140 + " lower=" + mLowerWallpaperTarget); 141 return (wallpaperTarget != null 142 && (!wallpaperTarget.mObscured || (wallpaperTarget.mAppToken != null 143 && wallpaperTarget.mAppToken.mAppAnimator.animation != null))) 144 || mUpperWallpaperTarget != null 145 || mLowerWallpaperTarget != null; 146 } 147 148 boolean isWallpaperTargetAnimating() { 149 return mWallpaperTarget != null && mWallpaperTarget.mWinAnimator.isAnimationSet() 150 && !mWallpaperTarget.mWinAnimator.isDummyAnimation(); 151 } 152 153 void updateWallpaperVisibility() { 154 final DisplayContent displayContent = mWallpaperTarget.getDisplayContent(); 155 if (displayContent == null) { 156 return; 157 } 158 final boolean visible = isWallpaperVisible(mWallpaperTarget); 159 final DisplayInfo displayInfo = displayContent.getDisplayInfo(); 160 final int dw = displayInfo.logicalWidth; 161 final int dh = displayInfo.logicalHeight; 162 163 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 164 WindowToken token = mWallpaperTokens.get(curTokenNdx); 165 if (token.hidden == visible) { 166 token.hidden = !visible; 167 // Need to do a layout to ensure the wallpaper now has the 168 // correct size. 169 displayContent.layoutNeeded = true; 170 } 171 172 final WindowList windows = token.windows; 173 for (int wallpaperNdx = windows.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) { 174 WindowState wallpaper = windows.get(wallpaperNdx); 175 if (visible) { 176 updateWallpaperOffset(wallpaper, dw, dh, false); 177 } 178 179 dispatchWallpaperVisibility(wallpaper, visible); 180 } 181 } 182 } 183 184 void hideDeferredWallpapersIfNeeded() { 185 if (mDeferredHideWallpaper != null) { 186 hideWallpapers(mDeferredHideWallpaper); 187 mDeferredHideWallpaper = null; 188 } 189 } 190 191 void hideWallpapers(final WindowState winGoingAway) { 192 if (mWallpaperTarget != null 193 && (mWallpaperTarget != winGoingAway || mLowerWallpaperTarget != null)) { 194 return; 195 } 196 if (mService.mAppTransition.isRunning()) { 197 // Defer hiding the wallpaper when app transition is running until the animations 198 // are done. 199 mDeferredHideWallpaper = winGoingAway; 200 return; 201 } 202 203 final boolean wasDeferred = (mDeferredHideWallpaper == winGoingAway); 204 for (int i = mWallpaperTokens.size() - 1; i >= 0; i--) { 205 final WindowToken token = mWallpaperTokens.get(i); 206 for (int j = token.windows.size() - 1; j >= 0; j--) { 207 final WindowState wallpaper = token.windows.get(j); 208 final WindowStateAnimator winAnimator = wallpaper.mWinAnimator; 209 if (!winAnimator.mLastHidden || wasDeferred) { 210 winAnimator.hide("hideWallpapers"); 211 dispatchWallpaperVisibility(wallpaper, false); 212 final DisplayContent displayContent = wallpaper.getDisplayContent(); 213 if (displayContent != null) { 214 displayContent.pendingLayoutChanges |= 215 WindowManagerPolicy.FINISH_LAYOUT_REDO_WALLPAPER; 216 } 217 } 218 } 219 if (DEBUG_WALLPAPER_LIGHT && !token.hidden) Slog.d(TAG, "Hiding wallpaper " + token 220 + " from " + winGoingAway + " target=" + mWallpaperTarget + " lower=" 221 + mLowerWallpaperTarget + "\n" + Debug.getCallers(5, " ")); 222 token.hidden = true; 223 } 224 } 225 226 /** 227 * Check wallpaper for visibility change and notify window if so. 228 * @param wallpaper The wallpaper to test and notify. 229 * @param visible Current visibility. 230 */ 231 void dispatchWallpaperVisibility(final WindowState wallpaper, final boolean visible) { 232 // Only send notification if the visibility actually changed and we are not trying to hide 233 // the wallpaper when we are deferring hiding of the wallpaper. 234 if (wallpaper.mWallpaperVisible != visible 235 && (mDeferredHideWallpaper == null || visible)) { 236 wallpaper.mWallpaperVisible = visible; 237 try { 238 if (DEBUG_VISIBILITY || DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 239 "Updating vis of wallpaper " + wallpaper 240 + ": " + visible + " from:\n" + Debug.getCallers(4, " ")); 241 wallpaper.mClient.dispatchAppVisibility(visible); 242 } catch (RemoteException e) { 243 } 244 } 245 } 246 247 boolean updateWallpaperOffset(WindowState wallpaperWin, int dw, int dh, boolean sync) { 248 boolean rawChanged = false; 249 float wpx = mLastWallpaperX >= 0 ? mLastWallpaperX : 0.5f; 250 float wpxs = mLastWallpaperXStep >= 0 ? mLastWallpaperXStep : -1.0f; 251 int availw = wallpaperWin.mFrame.right - wallpaperWin.mFrame.left - dw; 252 int offset = availw > 0 ? -(int)(availw * wpx + .5f) : 0; 253 if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 254 offset += mLastWallpaperDisplayOffsetX; 255 } 256 boolean changed = wallpaperWin.mXOffset != offset; 257 if (changed) { 258 if (DEBUG_WALLPAPER) Slog.v(TAG, "Update wallpaper " + wallpaperWin + " x: " + offset); 259 wallpaperWin.mXOffset = offset; 260 } 261 if (wallpaperWin.mWallpaperX != wpx || wallpaperWin.mWallpaperXStep != wpxs) { 262 wallpaperWin.mWallpaperX = wpx; 263 wallpaperWin.mWallpaperXStep = wpxs; 264 rawChanged = true; 265 } 266 267 float wpy = mLastWallpaperY >= 0 ? mLastWallpaperY : 0.5f; 268 float wpys = mLastWallpaperYStep >= 0 ? mLastWallpaperYStep : -1.0f; 269 int availh = wallpaperWin.mFrame.bottom - wallpaperWin.mFrame.top - dh; 270 offset = availh > 0 ? -(int)(availh * wpy + .5f) : 0; 271 if (mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 272 offset += mLastWallpaperDisplayOffsetY; 273 } 274 if (wallpaperWin.mYOffset != offset) { 275 if (DEBUG_WALLPAPER) Slog.v(TAG, "Update wallpaper " + wallpaperWin + " y: " + offset); 276 changed = true; 277 wallpaperWin.mYOffset = offset; 278 } 279 if (wallpaperWin.mWallpaperY != wpy || wallpaperWin.mWallpaperYStep != wpys) { 280 wallpaperWin.mWallpaperY = wpy; 281 wallpaperWin.mWallpaperYStep = wpys; 282 rawChanged = true; 283 } 284 285 if (rawChanged && (wallpaperWin.mAttrs.privateFlags & 286 WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS) != 0) { 287 try { 288 if (DEBUG_WALLPAPER) Slog.v(TAG, "Report new wp offset " 289 + wallpaperWin + " x=" + wallpaperWin.mWallpaperX 290 + " y=" + wallpaperWin.mWallpaperY); 291 if (sync) { 292 mWaitingOnWallpaper = wallpaperWin; 293 } 294 wallpaperWin.mClient.dispatchWallpaperOffsets( 295 wallpaperWin.mWallpaperX, wallpaperWin.mWallpaperY, 296 wallpaperWin.mWallpaperXStep, wallpaperWin.mWallpaperYStep, sync); 297 if (sync) { 298 if (mWaitingOnWallpaper != null) { 299 long start = SystemClock.uptimeMillis(); 300 if ((mLastWallpaperTimeoutTime + WALLPAPER_TIMEOUT_RECOVERY) 301 < start) { 302 try { 303 if (DEBUG_WALLPAPER) Slog.v(TAG, 304 "Waiting for offset complete..."); 305 mService.mWindowMap.wait(WALLPAPER_TIMEOUT); 306 } catch (InterruptedException e) { 307 } 308 if (DEBUG_WALLPAPER) Slog.v(TAG, "Offset complete!"); 309 if ((start + WALLPAPER_TIMEOUT) < SystemClock.uptimeMillis()) { 310 Slog.i(TAG, "Timeout waiting for wallpaper to offset: " 311 + wallpaperWin); 312 mLastWallpaperTimeoutTime = start; 313 } 314 } 315 mWaitingOnWallpaper = null; 316 } 317 } 318 } catch (RemoteException e) { 319 } 320 } 321 322 return changed; 323 } 324 325 void setWindowWallpaperPosition( 326 WindowState window, float x, float y, float xStep, float yStep) { 327 if (window.mWallpaperX != x || window.mWallpaperY != y) { 328 window.mWallpaperX = x; 329 window.mWallpaperY = y; 330 window.mWallpaperXStep = xStep; 331 window.mWallpaperYStep = yStep; 332 updateWallpaperOffsetLocked(window, true); 333 } 334 } 335 336 void setWindowWallpaperDisplayOffset(WindowState window, int x, int y) { 337 if (window.mWallpaperDisplayOffsetX != x || window.mWallpaperDisplayOffsetY != y) { 338 window.mWallpaperDisplayOffsetX = x; 339 window.mWallpaperDisplayOffsetY = y; 340 updateWallpaperOffsetLocked(window, true); 341 } 342 } 343 344 Bundle sendWindowWallpaperCommand( 345 WindowState window, String action, int x, int y, int z, Bundle extras, boolean sync) { 346 if (window == mWallpaperTarget 347 || window == mLowerWallpaperTarget 348 || window == mUpperWallpaperTarget) { 349 boolean doWait = sync; 350 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 351 final WindowList windows = mWallpaperTokens.get(curTokenNdx).windows; 352 for (int wallpaperNdx = windows.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) { 353 WindowState wallpaper = windows.get(wallpaperNdx); 354 try { 355 wallpaper.mClient.dispatchWallpaperCommand(action, 356 x, y, z, extras, sync); 357 // We only want to be synchronous with one wallpaper. 358 sync = false; 359 } catch (RemoteException e) { 360 } 361 } 362 } 363 364 if (doWait) { 365 // TODO: Need to wait for result. 366 } 367 } 368 369 return null; 370 } 371 372 void updateWallpaperOffsetLocked(WindowState changingTarget, boolean sync) { 373 final DisplayContent displayContent = changingTarget.getDisplayContent(); 374 if (displayContent == null) { 375 return; 376 } 377 final DisplayInfo displayInfo = displayContent.getDisplayInfo(); 378 final int dw = displayInfo.logicalWidth; 379 final int dh = displayInfo.logicalHeight; 380 381 WindowState target = mWallpaperTarget; 382 if (target != null) { 383 if (target.mWallpaperX >= 0) { 384 mLastWallpaperX = target.mWallpaperX; 385 } else if (changingTarget.mWallpaperX >= 0) { 386 mLastWallpaperX = changingTarget.mWallpaperX; 387 } 388 if (target.mWallpaperY >= 0) { 389 mLastWallpaperY = target.mWallpaperY; 390 } else if (changingTarget.mWallpaperY >= 0) { 391 mLastWallpaperY = changingTarget.mWallpaperY; 392 } 393 if (target.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 394 mLastWallpaperDisplayOffsetX = target.mWallpaperDisplayOffsetX; 395 } else if (changingTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 396 mLastWallpaperDisplayOffsetX = changingTarget.mWallpaperDisplayOffsetX; 397 } 398 if (target.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 399 mLastWallpaperDisplayOffsetY = target.mWallpaperDisplayOffsetY; 400 } else if (changingTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 401 mLastWallpaperDisplayOffsetY = changingTarget.mWallpaperDisplayOffsetY; 402 } 403 if (target.mWallpaperXStep >= 0) { 404 mLastWallpaperXStep = target.mWallpaperXStep; 405 } else if (changingTarget.mWallpaperXStep >= 0) { 406 mLastWallpaperXStep = changingTarget.mWallpaperXStep; 407 } 408 if (target.mWallpaperYStep >= 0) { 409 mLastWallpaperYStep = target.mWallpaperYStep; 410 } else if (changingTarget.mWallpaperYStep >= 0) { 411 mLastWallpaperYStep = changingTarget.mWallpaperYStep; 412 } 413 } 414 415 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 416 WindowList windows = mWallpaperTokens.get(curTokenNdx).windows; 417 for (int wallpaperNdx = windows.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) { 418 WindowState wallpaper = windows.get(wallpaperNdx); 419 if (updateWallpaperOffset(wallpaper, dw, dh, sync)) { 420 WindowStateAnimator winAnimator = wallpaper.mWinAnimator; 421 winAnimator.computeShownFrameLocked(); 422 // No need to lay out the windows - we can just set the wallpaper position 423 // directly. 424 winAnimator.setWallpaperOffset(wallpaper.mShownPosition); 425 // We only want to be synchronous with one wallpaper. 426 sync = false; 427 } 428 } 429 } 430 } 431 432 void clearLastWallpaperTimeoutTime() { 433 mLastWallpaperTimeoutTime = 0; 434 } 435 436 void wallpaperCommandComplete(IBinder window) { 437 if (mWaitingOnWallpaper != null && 438 mWaitingOnWallpaper.mClient.asBinder() == window) { 439 mWaitingOnWallpaper = null; 440 mService.mWindowMap.notifyAll(); 441 } 442 } 443 444 void wallpaperOffsetsComplete(IBinder window) { 445 if (mWaitingOnWallpaper != null && 446 mWaitingOnWallpaper.mClient.asBinder() == window) { 447 mWaitingOnWallpaper = null; 448 mService.mWindowMap.notifyAll(); 449 } 450 } 451 452 int getAnimLayerAdjustment() { 453 return mWallpaperAnimLayerAdjustment; 454 } 455 456 void setAnimLayerAdjustment(WindowState win, int adj) { 457 if (win != mWallpaperTarget || mLowerWallpaperTarget != null) { 458 return; 459 } 460 461 if (DEBUG_LAYERS || DEBUG_WALLPAPER) Slog.v(TAG, "Setting wallpaper layer adj to " + adj); 462 mWallpaperAnimLayerAdjustment = adj; 463 for (int i = mWallpaperTokens.size() - 1; i >= 0; i--) { 464 WindowList windows = mWallpaperTokens.get(i).windows; 465 for (int j = windows.size() - 1; j >= 0; j--) { 466 WindowState wallpaper = windows.get(j); 467 wallpaper.mWinAnimator.mAnimLayer = wallpaper.mLayer + adj; 468 if (DEBUG_LAYERS || DEBUG_WALLPAPER) Slog.v(TAG, "setWallpaper win " 469 + wallpaper + " anim layer: " + wallpaper.mWinAnimator.mAnimLayer); 470 } 471 } 472 } 473 474 private void findWallpaperTarget(WindowList windows, FindWallpaperTargetResult result) { 475 final WindowAnimator winAnimator = mService.mAnimator; 476 result.reset(); 477 WindowState w = null; 478 int windowDetachedI = -1; 479 boolean resetTopWallpaper = false; 480 boolean inFreeformSpace = false; 481 boolean replacing = false; 482 boolean keyguardGoingAwayWithWallpaper = false; 483 484 for (int i = windows.size() - 1; i >= 0; i--) { 485 w = windows.get(i); 486 if ((w.mAttrs.type == TYPE_WALLPAPER)) { 487 if (result.topWallpaper == null || resetTopWallpaper) { 488 result.setTopWallpaper(w, i); 489 resetTopWallpaper = false; 490 } 491 continue; 492 } 493 resetTopWallpaper = true; 494 if (w != winAnimator.mWindowDetachedWallpaper && w.mAppToken != null) { 495 // If this window's app token is hidden and not animating, 496 // it is of no interest to us. 497 if (w.mAppToken.hidden && w.mAppToken.mAppAnimator.animation == null) { 498 if (DEBUG_WALLPAPER) Slog.v(TAG, 499 "Skipping hidden and not animating token: " + w); 500 continue; 501 } 502 } 503 if (DEBUG_WALLPAPER) Slog.v(TAG, "Win #" + i + " " + w + ": isOnScreen=" 504 + w.isOnScreen() + " mDrawState=" + w.mWinAnimator.mDrawState); 505 506 if (!inFreeformSpace) { 507 TaskStack stack = w.getStack(); 508 inFreeformSpace = stack != null && stack.mStackId == FREEFORM_WORKSPACE_STACK_ID; 509 } 510 511 replacing |= w.mWillReplaceWindow; 512 keyguardGoingAwayWithWallpaper |= (w.mAppToken != null 513 && w.mWinAnimator.mKeyguardGoingAwayWithWallpaper); 514 515 final boolean hasWallpaper = (w.mAttrs.flags & FLAG_SHOW_WALLPAPER) != 0; 516 if (hasWallpaper && w.isOnScreen() && (mWallpaperTarget == w || w.isDrawFinishedLw())) { 517 if (DEBUG_WALLPAPER) Slog.v(TAG, "Found wallpaper target: #" + i + "=" + w); 518 result.setWallpaperTarget(w, i); 519 if (w == mWallpaperTarget && w.mWinAnimator.isAnimationSet()) { 520 // The current wallpaper target is animating, so we'll look behind it for 521 // another possible target and figure out what is going on later. 522 if (DEBUG_WALLPAPER) Slog.v(TAG, 523 "Win " + w + ": token animating, looking behind."); 524 continue; 525 } 526 break; 527 } else if (w == winAnimator.mWindowDetachedWallpaper) { 528 windowDetachedI = i; 529 } 530 } 531 532 if (result.wallpaperTarget != null) { 533 return; 534 } 535 536 if (windowDetachedI >= 0) { 537 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 538 "Found animating detached wallpaper activity: #" + windowDetachedI + "=" + w); 539 result.setWallpaperTarget(w, windowDetachedI); 540 } else if (inFreeformSpace || (replacing && mWallpaperTarget != null)) { 541 // In freeform mode we set the wallpaper as its own target, so we don't need an 542 // additional window to make it visible. When we are replacing a window and there was 543 // wallpaper before replacement, we want to keep the window until the new windows fully 544 // appear and can determine the visibility, to avoid flickering. 545 result.setWallpaperTarget(result.topWallpaper, result.topWallpaperIndex); 546 547 } else if (keyguardGoingAwayWithWallpaper) { 548 // If the app is executing an animation because the keyguard is going away (and the 549 // keyguard was showing the wallpaper) keep the wallpaper during the animation so it 550 // doesn't flicker out by having it be its own target. 551 result.setWallpaperTarget(result.topWallpaper, result.topWallpaperIndex); 552 } 553 } 554 555 private boolean updateWallpaperWindowsTarget( 556 WindowList windows, FindWallpaperTargetResult result) { 557 558 boolean targetChanged = false; 559 WindowState wallpaperTarget = result.wallpaperTarget; 560 int wallpaperTargetIndex = result.wallpaperTargetIndex; 561 562 if (mWallpaperTarget != wallpaperTarget 563 && (mLowerWallpaperTarget == null || mLowerWallpaperTarget != wallpaperTarget)) { 564 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 565 "New wallpaper target: " + wallpaperTarget + " oldTarget: " + mWallpaperTarget); 566 567 mLowerWallpaperTarget = null; 568 mUpperWallpaperTarget = null; 569 570 WindowState oldW = mWallpaperTarget; 571 mWallpaperTarget = wallpaperTarget; 572 targetChanged = true; 573 574 // Now what is happening... if the current and new targets are animating, 575 // then we are in our super special mode! 576 if (wallpaperTarget != null && oldW != null) { 577 boolean oldAnim = oldW.isAnimatingLw(); 578 boolean foundAnim = wallpaperTarget.isAnimatingLw(); 579 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 580 "New animation: " + foundAnim + " old animation: " + oldAnim); 581 if (foundAnim && oldAnim) { 582 int oldI = windows.indexOf(oldW); 583 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 584 "New i: " + wallpaperTargetIndex + " old i: " + oldI); 585 if (oldI >= 0) { 586 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 587 "Animating wallpapers: old#" + oldI + "=" + oldW + "; new#" 588 + wallpaperTargetIndex + "=" + wallpaperTarget); 589 590 // Set the new target correctly. 591 if (wallpaperTarget.mAppToken != null 592 && wallpaperTarget.mAppToken.hiddenRequested) { 593 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 594 "Old wallpaper still the target."); 595 mWallpaperTarget = oldW; 596 wallpaperTarget = oldW; 597 wallpaperTargetIndex = oldI; 598 } 599 // Now set the upper and lower wallpaper targets correctly, 600 // and make sure that we are positioning the wallpaper below the lower. 601 else if (wallpaperTargetIndex > oldI) { 602 // The new target is on top of the old one. 603 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 604 "Found target above old target."); 605 mUpperWallpaperTarget = wallpaperTarget; 606 mLowerWallpaperTarget = oldW; 607 wallpaperTarget = oldW; 608 wallpaperTargetIndex = oldI; 609 } else { 610 // The new target is below the old one. 611 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 612 "Found target below old target."); 613 mUpperWallpaperTarget = oldW; 614 mLowerWallpaperTarget = wallpaperTarget; 615 } 616 } 617 } 618 } 619 620 } else if (mLowerWallpaperTarget != null) { 621 // Is it time to stop animating? 622 if (!mLowerWallpaperTarget.isAnimatingLw() || !mUpperWallpaperTarget.isAnimatingLw()) { 623 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "No longer animating wallpaper targets!"); 624 mLowerWallpaperTarget = null; 625 mUpperWallpaperTarget = null; 626 mWallpaperTarget = wallpaperTarget; 627 targetChanged = true; 628 } 629 } 630 631 result.setWallpaperTarget(wallpaperTarget, wallpaperTargetIndex); 632 return targetChanged; 633 } 634 635 boolean updateWallpaperWindowsTargetByLayer( 636 WindowList windows, FindWallpaperTargetResult result) { 637 638 WindowState wallpaperTarget = result.wallpaperTarget; 639 int wallpaperTargetIndex = result.wallpaperTargetIndex; 640 boolean visible = wallpaperTarget != null; 641 642 if (visible) { 643 // The window is visible to the compositor...but is it visible to the user? 644 // That is what the wallpaper cares about. 645 visible = isWallpaperVisible(wallpaperTarget); 646 if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper visibility: " + visible); 647 648 // If the wallpaper target is animating, we may need to copy its layer adjustment. 649 // Only do this if we are not transferring between two wallpaper targets. 650 mWallpaperAnimLayerAdjustment = 651 (mLowerWallpaperTarget == null && wallpaperTarget.mAppToken != null) 652 ? wallpaperTarget.mAppToken.mAppAnimator.animLayerAdjustment : 0; 653 654 final int maxLayer = (mService.mPolicy.getMaxWallpaperLayer() * TYPE_LAYER_MULTIPLIER) 655 + TYPE_LAYER_OFFSET; 656 657 // Now w is the window we are supposed to be behind... but we 658 // need to be sure to also be behind any of its attached windows, 659 // AND any starting window associated with it, AND below the 660 // maximum layer the policy allows for wallpapers. 661 while (wallpaperTargetIndex > 0) { 662 final WindowState wb = windows.get(wallpaperTargetIndex - 1); 663 final WindowState wbParentWindow = wb.getParentWindow(); 664 final WindowState wallpaperParentWindow = wallpaperTarget.getParentWindow(); 665 if (wb.mBaseLayer < maxLayer 666 && wbParentWindow != wallpaperTarget 667 && (wallpaperParentWindow == null || wbParentWindow != wallpaperParentWindow) 668 && (wb.mAttrs.type != TYPE_APPLICATION_STARTING 669 || wallpaperTarget.mToken == null 670 || wb.mToken != wallpaperTarget.mToken)) { 671 // This window is not related to the previous one in any 672 // interesting way, so stop here. 673 break; 674 } 675 wallpaperTarget = wb; 676 wallpaperTargetIndex--; 677 } 678 } else { 679 if (DEBUG_WALLPAPER) Slog.v(TAG, "No wallpaper target"); 680 } 681 682 result.setWallpaperTarget(wallpaperTarget, wallpaperTargetIndex); 683 return visible; 684 } 685 686 boolean updateWallpaperWindowsPlacement(WindowList windows, 687 WindowState wallpaperTarget, int wallpaperTargetIndex, boolean visible) { 688 689 // TODO(multidisplay): Wallpapers on main screen only. 690 final DisplayInfo displayInfo = mService.getDefaultDisplayContentLocked().getDisplayInfo(); 691 final int dw = displayInfo.logicalWidth; 692 final int dh = displayInfo.logicalHeight; 693 694 // Start stepping backwards from here, ensuring that our wallpaper windows 695 // are correctly placed. 696 boolean changed = false; 697 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 698 WindowToken token = mWallpaperTokens.get(curTokenNdx); 699 if (token.hidden == visible) { 700 if (DEBUG_WALLPAPER_LIGHT) Slog.d(TAG, 701 "Wallpaper token " + token + " hidden=" + !visible); 702 token.hidden = !visible; 703 // Need to do a layout to ensure the wallpaper now has the correct size. 704 mService.getDefaultDisplayContentLocked().layoutNeeded = true; 705 } 706 707 final WindowList tokenWindows = token.windows; 708 for (int wallpaperNdx = tokenWindows.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) { 709 WindowState wallpaper = tokenWindows.get(wallpaperNdx); 710 711 if (visible) { 712 updateWallpaperOffset(wallpaper, dw, dh, false); 713 } 714 715 // First, make sure the client has the current visibility state. 716 dispatchWallpaperVisibility(wallpaper, visible); 717 718 wallpaper.mWinAnimator.mAnimLayer = 719 wallpaper.mLayer + mWallpaperAnimLayerAdjustment; 720 if (DEBUG_LAYERS || DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "adjustWallpaper win " 721 + wallpaper + " anim layer: " + wallpaper.mWinAnimator.mAnimLayer); 722 723 // First, if this window is at the current index, then all is well. 724 if (wallpaper == wallpaperTarget) { 725 wallpaperTargetIndex--; 726 wallpaperTarget = wallpaperTargetIndex > 0 727 ? windows.get(wallpaperTargetIndex - 1) : null; 728 continue; 729 } 730 731 // The window didn't match... the current wallpaper window, 732 // wherever it is, is in the wrong place, so make sure it is not in the list. 733 int oldIndex = windows.indexOf(wallpaper); 734 if (oldIndex >= 0) { 735 if (DEBUG_WINDOW_MOVEMENT) Slog.v(TAG, 736 "Wallpaper removing at " + oldIndex + ": " + wallpaper); 737 windows.remove(oldIndex); 738 mService.mWindowsChanged = true; 739 if (oldIndex < wallpaperTargetIndex) { 740 wallpaperTargetIndex--; 741 } 742 } 743 744 // Now stick it in. For apps over wallpaper keep the wallpaper at the bottommost 745 // layer. For keyguard over wallpaper put the wallpaper under the keyguard. 746 int insertionIndex = 0; 747 if (visible && wallpaperTarget != null) { 748 final int type = wallpaperTarget.mAttrs.type; 749 final int privateFlags = wallpaperTarget.mAttrs.privateFlags; 750 if ((privateFlags & PRIVATE_FLAG_KEYGUARD) != 0 751 || type == TYPE_KEYGUARD_SCRIM) { 752 insertionIndex = windows.indexOf(wallpaperTarget); 753 } 754 } 755 if (DEBUG_WALLPAPER_LIGHT || DEBUG_WINDOW_MOVEMENT 756 || (DEBUG_ADD_REMOVE && oldIndex != insertionIndex)) Slog.v(TAG, 757 "Moving wallpaper " + wallpaper 758 + " from " + oldIndex + " to " + insertionIndex); 759 760 windows.add(insertionIndex, wallpaper); 761 mService.mWindowsChanged = true; 762 changed = true; 763 } 764 } 765 766 return changed; 767 } 768 769 boolean adjustWallpaperWindows() { 770 mService.mWindowPlacerLocked.mWallpaperMayChange = false; 771 772 final WindowList windows = mService.getDefaultWindowListLocked(); 773 // First find top-most window that has asked to be on top of the wallpaper; 774 // all wallpapers go behind it. 775 findWallpaperTarget(windows, mFindResults); 776 final boolean targetChanged = updateWallpaperWindowsTarget(windows, mFindResults); 777 final boolean visible = updateWallpaperWindowsTargetByLayer(windows, mFindResults); 778 WindowState wallpaperTarget = mFindResults.wallpaperTarget; 779 int wallpaperTargetIndex = mFindResults.wallpaperTargetIndex; 780 781 if (wallpaperTarget == null && mFindResults.topWallpaper != null) { 782 // There is no wallpaper target, so it goes at the bottom. 783 // We will assume it is the same place as last time, if known. 784 wallpaperTarget = mFindResults.topWallpaper; 785 wallpaperTargetIndex = mFindResults.topWallpaperIndex + 1; 786 } else { 787 // Okay i is the position immediately above the wallpaper. 788 // Look at what is below it for later. 789 wallpaperTarget = wallpaperTargetIndex > 0 790 ? windows.get(wallpaperTargetIndex - 1) : null; 791 } 792 793 if (visible) { 794 if (mWallpaperTarget.mWallpaperX >= 0) { 795 mLastWallpaperX = mWallpaperTarget.mWallpaperX; 796 mLastWallpaperXStep = mWallpaperTarget.mWallpaperXStep; 797 } 798 if (mWallpaperTarget.mWallpaperY >= 0) { 799 mLastWallpaperY = mWallpaperTarget.mWallpaperY; 800 mLastWallpaperYStep = mWallpaperTarget.mWallpaperYStep; 801 } 802 if (mWallpaperTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 803 mLastWallpaperDisplayOffsetX = mWallpaperTarget.mWallpaperDisplayOffsetX; 804 } 805 if (mWallpaperTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 806 mLastWallpaperDisplayOffsetY = mWallpaperTarget.mWallpaperDisplayOffsetY; 807 } 808 } 809 810 final boolean changed = updateWallpaperWindowsPlacement( 811 windows, wallpaperTarget, wallpaperTargetIndex, visible); 812 813 if (targetChanged && DEBUG_WALLPAPER_LIGHT) Slog.d(TAG, "New wallpaper: target=" 814 + mWallpaperTarget + " lower=" + mLowerWallpaperTarget + " upper=" 815 + mUpperWallpaperTarget); 816 817 return changed; 818 } 819 820 boolean processWallpaperDrawPendingTimeout() { 821 if (mWallpaperDrawState == WALLPAPER_DRAW_PENDING) { 822 mWallpaperDrawState = WALLPAPER_DRAW_TIMEOUT; 823 if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, 824 "*** WALLPAPER DRAW TIMEOUT"); 825 return true; 826 } 827 return false; 828 } 829 830 boolean wallpaperTransitionReady() { 831 boolean transitionReady = true; 832 boolean wallpaperReady = true; 833 for (int curTokenIndex = mWallpaperTokens.size() - 1; 834 curTokenIndex >= 0 && wallpaperReady; curTokenIndex--) { 835 WindowToken token = mWallpaperTokens.get(curTokenIndex); 836 for (int curWallpaperIndex = token.windows.size() - 1; curWallpaperIndex >= 0; 837 curWallpaperIndex--) { 838 WindowState wallpaper = token.windows.get(curWallpaperIndex); 839 if (wallpaper.mWallpaperVisible && !wallpaper.isDrawnLw()) { 840 // We've told this wallpaper to be visible, but it is not drawn yet 841 wallpaperReady = false; 842 if (mWallpaperDrawState != WALLPAPER_DRAW_TIMEOUT) { 843 // wait for this wallpaper until it is drawn or timeout 844 transitionReady = false; 845 } 846 if (mWallpaperDrawState == WALLPAPER_DRAW_NORMAL) { 847 mWallpaperDrawState = WALLPAPER_DRAW_PENDING; 848 mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); 849 mService.mH.sendEmptyMessageDelayed(WALLPAPER_DRAW_PENDING_TIMEOUT, 850 WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION); 851 } 852 if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, 853 "Wallpaper should be visible but has not been drawn yet. " + 854 "mWallpaperDrawState=" + mWallpaperDrawState); 855 break; 856 } 857 } 858 } 859 if (wallpaperReady) { 860 mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; 861 mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); 862 } 863 864 return transitionReady; 865 } 866 867 void addWallpaperToken(WindowToken token) { 868 mWallpaperTokens.add(token); 869 } 870 871 void removeWallpaperToken(WindowToken token) { 872 mWallpaperTokens.remove(token); 873 } 874 875 void dump(PrintWriter pw, String prefix) { 876 pw.print(prefix); pw.print("mWallpaperTarget="); pw.println(mWallpaperTarget); 877 if (mLowerWallpaperTarget != null || mUpperWallpaperTarget != null) { 878 pw.print(prefix); pw.print("mLowerWallpaperTarget="); pw.println(mLowerWallpaperTarget); 879 pw.print(prefix); pw.print("mUpperWallpaperTarget="); pw.println(mUpperWallpaperTarget); 880 } 881 pw.print(prefix); pw.print("mLastWallpaperX="); pw.print(mLastWallpaperX); 882 pw.print(" mLastWallpaperY="); pw.println(mLastWallpaperY); 883 if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE 884 || mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 885 pw.print(prefix); 886 pw.print("mLastWallpaperDisplayOffsetX="); pw.print(mLastWallpaperDisplayOffsetX); 887 pw.print(" mLastWallpaperDisplayOffsetY="); pw.println(mLastWallpaperDisplayOffsetY); 888 } 889 } 890 891 void dumpTokens(PrintWriter pw, String prefix, boolean dumpAll) { 892 if (!mWallpaperTokens.isEmpty()) { 893 pw.println(); 894 pw.print(prefix); pw.println("Wallpaper tokens:"); 895 for (int i = mWallpaperTokens.size() - 1; i >= 0; i--) { 896 WindowToken token = mWallpaperTokens.get(i); 897 pw.print(prefix); pw.print("Wallpaper #"); pw.print(i); 898 pw.print(' '); pw.print(token); 899 if (dumpAll) { 900 pw.println(':'); 901 token.dump(pw, " "); 902 } else { 903 pw.println(); 904 } 905 } 906 } 907 } 908 909 /** Helper class for storing the results of a wallpaper target find operation. */ 910 final private static class FindWallpaperTargetResult { 911 int topWallpaperIndex = 0; 912 WindowState topWallpaper = null; 913 int wallpaperTargetIndex = 0; 914 WindowState wallpaperTarget = null; 915 916 void setTopWallpaper(WindowState win, int index) { 917 topWallpaper = win; 918 topWallpaperIndex = index; 919 } 920 921 void setWallpaperTarget(WindowState win, int index) { 922 wallpaperTarget = win; 923 wallpaperTargetIndex = index; 924 } 925 926 void reset() { 927 topWallpaperIndex = 0; 928 topWallpaper = null; 929 wallpaperTargetIndex = 0; 930 wallpaperTarget = null; 931 } 932 } 933} 934