WallpaperController.java revision 51cb83e1db4d84ced550a41e172d523ec6614c0a
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.WindowManagerService.DEBUG_ADD_REMOVE; 26import static com.android.server.wm.WindowManagerService.DEBUG_APP_TRANSITIONS; 27import static com.android.server.wm.WindowManagerService.DEBUG_LAYERS; 28import static com.android.server.wm.WindowManagerService.DEBUG_WINDOW_MOVEMENT; 29import static com.android.server.wm.WindowManagerService.DEBUG_VISIBILITY; 30import static com.android.server.wm.WindowManagerService.DEBUG_WALLPAPER; 31import static com.android.server.wm.WindowManagerService.DEBUG_WALLPAPER_LIGHT; 32import static com.android.server.wm.WindowManagerService.H.WALLPAPER_DRAW_PENDING_TIMEOUT; 33import static com.android.server.wm.WindowManagerService.TYPE_LAYER_MULTIPLIER; 34import static com.android.server.wm.WindowManagerService.TYPE_LAYER_OFFSET; 35 36import android.os.Bundle; 37import android.os.Debug; 38import android.os.IBinder; 39import android.os.RemoteException; 40import android.os.SystemClock; 41import android.util.Slog; 42import android.view.DisplayInfo; 43import android.view.WindowManager; 44import android.view.WindowManagerPolicy; 45 46import java.io.PrintWriter; 47import java.util.ArrayList; 48 49/** 50 * Controls wallpaper windows visibility, ordering, and so on. 51 * NOTE: All methods in this class must be called with the window manager service lock held. 52 */ 53class WallpaperController { 54 private static final String TAG = com.android.server.wm.WindowManagerService.TAG; 55 final private WindowManagerService mService; 56 57 private final ArrayList<WindowToken> mWallpaperTokens = new ArrayList<>(); 58 59 // If non-null, this is the currently visible window that is associated 60 // with the wallpaper. 61 private WindowState mWallpaperTarget = null; 62 // If non-null, we are in the middle of animating from one wallpaper target 63 // to another, and this is the lower one in Z-order. 64 private WindowState mLowerWallpaperTarget = null; 65 // If non-null, we are in the middle of animating from one wallpaper target 66 // to another, and this is the higher one in Z-order. 67 private WindowState mUpperWallpaperTarget = null; 68 69 private int mWallpaperAnimLayerAdjustment; 70 71 private float mLastWallpaperX = -1; 72 private float mLastWallpaperY = -1; 73 private float mLastWallpaperXStep = -1; 74 private float mLastWallpaperYStep = -1; 75 private int mLastWallpaperDisplayOffsetX = Integer.MIN_VALUE; 76 private int mLastWallpaperDisplayOffsetY = Integer.MIN_VALUE; 77 78 // This is set when we are waiting for a wallpaper to tell us it is done 79 // changing its scroll position. 80 WindowState mWaitingOnWallpaper; 81 82 // The last time we had a timeout when waiting for a wallpaper. 83 private long mLastWallpaperTimeoutTime; 84 // We give a wallpaper up to 150ms to finish scrolling. 85 private static final long WALLPAPER_TIMEOUT = 150; 86 // Time we wait after a timeout before trying to wait again. 87 private static final long WALLPAPER_TIMEOUT_RECOVERY = 10000; 88 89 // Set to the wallpaper window we would like to hide once the transition animations are done. 90 // This is useful in cases where we don't want the wallpaper to be hidden when the close app 91 // is a wallpaper target and is done animating out, but the opening app isn't a wallpaper 92 // target and isn't done animating in. 93 private WindowState mDeferredHideWallpaper = null; 94 95 // We give a wallpaper up to 500ms to finish drawing before playing app transitions. 96 private static final long WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION = 500; 97 private static final int WALLPAPER_DRAW_NORMAL = 0; 98 private static final int WALLPAPER_DRAW_PENDING = 1; 99 private static final int WALLPAPER_DRAW_TIMEOUT = 2; 100 private int mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; 101 102 private final FindWallpaperTargetResult mFindResults = new FindWallpaperTargetResult(); 103 104 public WallpaperController(WindowManagerService service) { 105 mService = service; 106 } 107 108 WindowState getWallpaperTarget() { 109 return mWallpaperTarget; 110 } 111 112 WindowState getLowerWallpaperTarget() { 113 return mLowerWallpaperTarget; 114 } 115 116 WindowState getUpperWallpaperTarget() { 117 return mUpperWallpaperTarget; 118 } 119 120 boolean isWallpaperTarget(WindowState win) { 121 return win == mWallpaperTarget; 122 } 123 124 boolean isBelowWallpaperTarget(WindowState win) { 125 return mWallpaperTarget != null && mWallpaperTarget.mLayer >= win.mBaseLayer; 126 } 127 128 boolean isWallpaperVisible() { 129 return isWallpaperVisible(mWallpaperTarget); 130 } 131 132 private boolean isWallpaperVisible(WindowState wallpaperTarget) { 133 if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper vis: target " + wallpaperTarget + ", obscured=" 134 + (wallpaperTarget != null ? Boolean.toString(wallpaperTarget.mObscured) : "??") 135 + " anim=" + ((wallpaperTarget != null && wallpaperTarget.mAppToken != null) 136 ? wallpaperTarget.mAppToken.mAppAnimator.animation : null) 137 + " upper=" + mUpperWallpaperTarget 138 + " lower=" + mLowerWallpaperTarget); 139 return (wallpaperTarget != null 140 && (!wallpaperTarget.mObscured || (wallpaperTarget.mAppToken != null 141 && wallpaperTarget.mAppToken.mAppAnimator.animation != null))) 142 || mUpperWallpaperTarget != null 143 || mLowerWallpaperTarget != null; 144 } 145 146 boolean isWallpaperTargetAnimating() { 147 return mWallpaperTarget != null && mWallpaperTarget.mWinAnimator.isAnimating() 148 && !mWallpaperTarget.mWinAnimator.isDummyAnimation(); 149 } 150 151 void updateWallpaperVisibility() { 152 final boolean visible = isWallpaperVisible(mWallpaperTarget); 153 final DisplayContent displayContent = mWallpaperTarget.getDisplayContent(); 154 if (displayContent == null) { 155 return; 156 } 157 final DisplayInfo displayInfo = displayContent.getDisplayInfo(); 158 final int dw = displayInfo.logicalWidth; 159 final int dh = displayInfo.logicalHeight; 160 161 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 162 WindowToken token = mWallpaperTokens.get(curTokenNdx); 163 if (token.hidden == visible) { 164 token.hidden = !visible; 165 // Need to do a layout to ensure the wallpaper now has the 166 // correct size. 167 displayContent.layoutNeeded = true; 168 } 169 170 final WindowList windows = token.windows; 171 for (int wallpaperNdx = windows.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) { 172 WindowState wallpaper = windows.get(wallpaperNdx); 173 if (visible) { 174 updateWallpaperOffset(wallpaper, dw, dh, false); 175 } 176 177 dispatchWallpaperVisibility(wallpaper, visible); 178 } 179 } 180 } 181 182 void hideDeferredWallpapersIfNeeded() { 183 if (mDeferredHideWallpaper != null) { 184 hideWallpapers(mDeferredHideWallpaper); 185 mDeferredHideWallpaper = null; 186 } 187 } 188 189 void hideWallpapers(final WindowState winGoingAway) { 190 if (mWallpaperTarget != null 191 && (mWallpaperTarget != winGoingAway || mLowerWallpaperTarget != null)) { 192 return; 193 } 194 if (mService.mAppTransition.isRunning()) { 195 // Defer hiding the wallpaper when app transition is running until the animations 196 // are done. 197 mDeferredHideWallpaper = winGoingAway; 198 return; 199 } 200 201 final boolean wasDeferred = (mDeferredHideWallpaper == winGoingAway); 202 for (int i = mWallpaperTokens.size() - 1; i >= 0; i--) { 203 final WindowToken token = mWallpaperTokens.get(i); 204 for (int j = token.windows.size() - 1; j >= 0; j--) { 205 final WindowState wallpaper = token.windows.get(j); 206 final WindowStateAnimator winAnimator = wallpaper.mWinAnimator; 207 if (!winAnimator.mLastHidden || wasDeferred) { 208 winAnimator.hide(); 209 dispatchWallpaperVisibility(wallpaper, false); 210 final DisplayContent displayContent = wallpaper.getDisplayContent(); 211 if (displayContent != null) { 212 displayContent.pendingLayoutChanges |= 213 WindowManagerPolicy.FINISH_LAYOUT_REDO_WALLPAPER; 214 } 215 } 216 } 217 if (DEBUG_WALLPAPER_LIGHT && !token.hidden) Slog.d(TAG, "Hiding wallpaper " + token 218 + " from " + winGoingAway + " target=" + mWallpaperTarget + " lower=" 219 + mLowerWallpaperTarget + "\n" + Debug.getCallers(5, " ")); 220 token.hidden = true; 221 } 222 } 223 224 /** 225 * Check wallpaper for visibility change and notify window if so. 226 * @param wallpaper The wallpaper to test and notify. 227 * @param visible Current visibility. 228 */ 229 void dispatchWallpaperVisibility(final WindowState wallpaper, final boolean visible) { 230 // Only send notification if the visibility actually changed and we are not trying to hide 231 // the wallpaper when we are deferring hiding of the wallpaper. 232 if (wallpaper.mWallpaperVisible != visible 233 && (mDeferredHideWallpaper == null || visible)) { 234 wallpaper.mWallpaperVisible = visible; 235 try { 236 if (DEBUG_VISIBILITY || DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 237 "Updating vis of wallpaper " + wallpaper 238 + ": " + visible + " from:\n" + Debug.getCallers(4, " ")); 239 wallpaper.mClient.dispatchAppVisibility(visible); 240 } catch (RemoteException e) { 241 } 242 } 243 } 244 245 boolean updateWallpaperOffset(WindowState wallpaperWin, int dw, int dh, boolean sync) { 246 boolean rawChanged = false; 247 float wpx = mLastWallpaperX >= 0 ? mLastWallpaperX : 0.5f; 248 float wpxs = mLastWallpaperXStep >= 0 ? mLastWallpaperXStep : -1.0f; 249 int availw = wallpaperWin.mFrame.right - wallpaperWin.mFrame.left - dw; 250 int offset = availw > 0 ? -(int)(availw * wpx + .5f) : 0; 251 if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 252 offset += mLastWallpaperDisplayOffsetX; 253 } 254 boolean changed = wallpaperWin.mXOffset != offset; 255 if (changed) { 256 if (DEBUG_WALLPAPER) Slog.v(TAG, "Update wallpaper " + wallpaperWin + " x: " + offset); 257 wallpaperWin.mXOffset = offset; 258 } 259 if (wallpaperWin.mWallpaperX != wpx || wallpaperWin.mWallpaperXStep != wpxs) { 260 wallpaperWin.mWallpaperX = wpx; 261 wallpaperWin.mWallpaperXStep = wpxs; 262 rawChanged = true; 263 } 264 265 float wpy = mLastWallpaperY >= 0 ? mLastWallpaperY : 0.5f; 266 float wpys = mLastWallpaperYStep >= 0 ? mLastWallpaperYStep : -1.0f; 267 int availh = wallpaperWin.mFrame.bottom - wallpaperWin.mFrame.top - dh; 268 offset = availh > 0 ? -(int)(availh * wpy + .5f) : 0; 269 if (mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 270 offset += mLastWallpaperDisplayOffsetY; 271 } 272 if (wallpaperWin.mYOffset != offset) { 273 if (DEBUG_WALLPAPER) Slog.v(TAG, "Update wallpaper " + wallpaperWin + " y: " + offset); 274 changed = true; 275 wallpaperWin.mYOffset = offset; 276 } 277 if (wallpaperWin.mWallpaperY != wpy || wallpaperWin.mWallpaperYStep != wpys) { 278 wallpaperWin.mWallpaperY = wpy; 279 wallpaperWin.mWallpaperYStep = wpys; 280 rawChanged = true; 281 } 282 283 if (rawChanged && (wallpaperWin.mAttrs.privateFlags & 284 WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS) != 0) { 285 try { 286 if (DEBUG_WALLPAPER) Slog.v(TAG, "Report new wp offset " 287 + wallpaperWin + " x=" + wallpaperWin.mWallpaperX 288 + " y=" + wallpaperWin.mWallpaperY); 289 if (sync) { 290 mWaitingOnWallpaper = wallpaperWin; 291 } 292 wallpaperWin.mClient.dispatchWallpaperOffsets( 293 wallpaperWin.mWallpaperX, wallpaperWin.mWallpaperY, 294 wallpaperWin.mWallpaperXStep, wallpaperWin.mWallpaperYStep, sync); 295 if (sync) { 296 if (mWaitingOnWallpaper != null) { 297 long start = SystemClock.uptimeMillis(); 298 if ((mLastWallpaperTimeoutTime + WALLPAPER_TIMEOUT_RECOVERY) 299 < start) { 300 try { 301 if (DEBUG_WALLPAPER) Slog.v(TAG, 302 "Waiting for offset complete..."); 303 mService.mWindowMap.wait(WALLPAPER_TIMEOUT); 304 } catch (InterruptedException e) { 305 } 306 if (DEBUG_WALLPAPER) Slog.v(TAG, "Offset complete!"); 307 if ((start + WALLPAPER_TIMEOUT) < SystemClock.uptimeMillis()) { 308 Slog.i(TAG, "Timeout waiting for wallpaper to offset: " 309 + wallpaperWin); 310 mLastWallpaperTimeoutTime = start; 311 } 312 } 313 mWaitingOnWallpaper = null; 314 } 315 } 316 } catch (RemoteException e) { 317 } 318 } 319 320 return changed; 321 } 322 323 void setWindowWallpaperPosition( 324 WindowState window, float x, float y, float xStep, float yStep) { 325 if (window.mWallpaperX != x || window.mWallpaperY != y) { 326 window.mWallpaperX = x; 327 window.mWallpaperY = y; 328 window.mWallpaperXStep = xStep; 329 window.mWallpaperYStep = yStep; 330 updateWallpaperOffsetLocked(window, true); 331 } 332 } 333 334 void setWindowWallpaperDisplayOffset(WindowState window, int x, int y) { 335 if (window.mWallpaperDisplayOffsetX != x || window.mWallpaperDisplayOffsetY != y) { 336 window.mWallpaperDisplayOffsetX = x; 337 window.mWallpaperDisplayOffsetY = y; 338 updateWallpaperOffsetLocked(window, true); 339 } 340 } 341 342 Bundle sendWindowWallpaperCommand( 343 WindowState window, String action, int x, int y, int z, Bundle extras, boolean sync) { 344 if (window == mWallpaperTarget 345 || window == mLowerWallpaperTarget 346 || window == mUpperWallpaperTarget) { 347 boolean doWait = sync; 348 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 349 final WindowList windows = mWallpaperTokens.get(curTokenNdx).windows; 350 for (int wallpaperNdx = windows.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) { 351 WindowState wallpaper = windows.get(wallpaperNdx); 352 try { 353 wallpaper.mClient.dispatchWallpaperCommand(action, 354 x, y, z, extras, sync); 355 // We only want to be synchronous with one wallpaper. 356 sync = false; 357 } catch (RemoteException e) { 358 } 359 } 360 } 361 362 if (doWait) { 363 // TODO: Need to wait for result. 364 } 365 } 366 367 return null; 368 } 369 370 void updateWallpaperOffsetLocked(WindowState changingTarget, boolean sync) { 371 final DisplayContent displayContent = changingTarget.getDisplayContent(); 372 if (displayContent == null) { 373 return; 374 } 375 final DisplayInfo displayInfo = displayContent.getDisplayInfo(); 376 final int dw = displayInfo.logicalWidth; 377 final int dh = displayInfo.logicalHeight; 378 379 WindowState target = mWallpaperTarget; 380 if (target != null) { 381 if (target.mWallpaperX >= 0) { 382 mLastWallpaperX = target.mWallpaperX; 383 } else if (changingTarget.mWallpaperX >= 0) { 384 mLastWallpaperX = changingTarget.mWallpaperX; 385 } 386 if (target.mWallpaperY >= 0) { 387 mLastWallpaperY = target.mWallpaperY; 388 } else if (changingTarget.mWallpaperY >= 0) { 389 mLastWallpaperY = changingTarget.mWallpaperY; 390 } 391 if (target.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 392 mLastWallpaperDisplayOffsetX = target.mWallpaperDisplayOffsetX; 393 } else if (changingTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 394 mLastWallpaperDisplayOffsetX = changingTarget.mWallpaperDisplayOffsetX; 395 } 396 if (target.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 397 mLastWallpaperDisplayOffsetY = target.mWallpaperDisplayOffsetY; 398 } else if (changingTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 399 mLastWallpaperDisplayOffsetY = changingTarget.mWallpaperDisplayOffsetY; 400 } 401 if (target.mWallpaperXStep >= 0) { 402 mLastWallpaperXStep = target.mWallpaperXStep; 403 } else if (changingTarget.mWallpaperXStep >= 0) { 404 mLastWallpaperXStep = changingTarget.mWallpaperXStep; 405 } 406 if (target.mWallpaperYStep >= 0) { 407 mLastWallpaperYStep = target.mWallpaperYStep; 408 } else if (changingTarget.mWallpaperYStep >= 0) { 409 mLastWallpaperYStep = changingTarget.mWallpaperYStep; 410 } 411 } 412 413 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 414 WindowList windows = mWallpaperTokens.get(curTokenNdx).windows; 415 for (int wallpaperNdx = windows.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) { 416 WindowState wallpaper = windows.get(wallpaperNdx); 417 if (updateWallpaperOffset(wallpaper, dw, dh, sync)) { 418 WindowStateAnimator winAnimator = wallpaper.mWinAnimator; 419 winAnimator.computeShownFrameLocked(); 420 // No need to lay out the windows - we can just set the wallpaper position 421 // directly. 422 winAnimator.setWallpaperOffset(wallpaper.mShownPosition); 423 // We only want to be synchronous with one wallpaper. 424 sync = false; 425 } 426 } 427 } 428 } 429 430 void clearLastWallpaperTimeoutTime() { 431 mLastWallpaperTimeoutTime = 0; 432 } 433 434 void wallpaperCommandComplete(IBinder window) { 435 if (mWaitingOnWallpaper != null && 436 mWaitingOnWallpaper.mClient.asBinder() == window) { 437 mWaitingOnWallpaper = null; 438 mService.mWindowMap.notifyAll(); 439 } 440 } 441 442 void wallpaperOffsetsComplete(IBinder window) { 443 if (mWaitingOnWallpaper != null && 444 mWaitingOnWallpaper.mClient.asBinder() == window) { 445 mWaitingOnWallpaper = null; 446 mService.mWindowMap.notifyAll(); 447 } 448 } 449 450 int getAnimLayerAdjustment() { 451 return mWallpaperAnimLayerAdjustment; 452 } 453 454 void setAnimLayerAdjustment(WindowState win, int adj) { 455 if (win != mWallpaperTarget || mLowerWallpaperTarget != null) { 456 return; 457 } 458 459 if (DEBUG_LAYERS || DEBUG_WALLPAPER) Slog.v(TAG, "Setting wallpaper layer adj to " + adj); 460 mWallpaperAnimLayerAdjustment = adj; 461 for (int i = mWallpaperTokens.size() - 1; i >= 0; i--) { 462 WindowList windows = mWallpaperTokens.get(i).windows; 463 for (int j = windows.size() - 1; j >= 0; j--) { 464 WindowState wallpaper = windows.get(j); 465 wallpaper.mWinAnimator.mAnimLayer = wallpaper.mLayer + adj; 466 if (DEBUG_LAYERS || DEBUG_WALLPAPER) Slog.v(TAG, "setWallpaper win " 467 + wallpaper + " anim layer: " + wallpaper.mWinAnimator.mAnimLayer); 468 } 469 } 470 } 471 472 private void findWallpaperTarget(WindowList windows, FindWallpaperTargetResult result) { 473 final WindowAnimator winAnimator = mService.mAnimator; 474 result.reset(); 475 WindowState w = null; 476 int windowDetachedI = -1; 477 boolean resetTopWallpaper = false; 478 boolean inFreeformSpace = false; 479 boolean replacing = false; 480 for (int i = windows.size() - 1; i >= 0; i--) { 481 w = windows.get(i); 482 if ((w.mAttrs.type == TYPE_WALLPAPER)) { 483 if (result.topWallpaper == null || resetTopWallpaper) { 484 result.setTopWallpaper(w, i); 485 resetTopWallpaper = false; 486 } 487 continue; 488 } 489 resetTopWallpaper = true; 490 if (w != winAnimator.mWindowDetachedWallpaper && w.mAppToken != null) { 491 // If this window's app token is hidden and not animating, 492 // it is of no interest to us. 493 if (w.mAppToken.hidden && w.mAppToken.mAppAnimator.animation == null) { 494 if (DEBUG_WALLPAPER) Slog.v(TAG, 495 "Skipping hidden and not animating token: " + w); 496 continue; 497 } 498 } 499 if (DEBUG_WALLPAPER) Slog.v(TAG, "Win #" + i + " " + w + ": isOnScreen=" 500 + w.isOnScreen() + " mDrawState=" + w.mWinAnimator.mDrawState); 501 502 if (!inFreeformSpace) { 503 TaskStack stack = w.getStack(); 504 inFreeformSpace = stack != null && stack.mStackId == FREEFORM_WORKSPACE_STACK_ID; 505 } 506 507 replacing = replacing || (w.mAppToken != null && w.mAppToken.mWillReplaceWindow); 508 509 // If the app is executing an animation because the keyguard is going away, 510 // keep the wallpaper during the animation so it doesn't flicker out. 511 final boolean hasWallpaper = (w.mAttrs.flags & FLAG_SHOW_WALLPAPER) != 0 512 || (w.mAppToken != null && w.mWinAnimator.mKeyguardGoingAwayAnimation); 513 if (hasWallpaper && w.isOnScreen() && (mWallpaperTarget == w || w.isDrawFinishedLw())) { 514 if (DEBUG_WALLPAPER) Slog.v(TAG, "Found wallpaper target: #" + i + "=" + w); 515 result.setWallpaperTarget(w, i); 516 if (w == mWallpaperTarget && w.mWinAnimator.isAnimating()) { 517 // The current wallpaper target is animating, so we'll look behind it for 518 // another possible target and figure out what is going on later. 519 if (DEBUG_WALLPAPER) Slog.v(TAG, 520 "Win " + w + ": token animating, looking behind."); 521 continue; 522 } 523 break; 524 } else if (w == winAnimator.mWindowDetachedWallpaper) { 525 windowDetachedI = i; 526 } 527 } 528 529 if (result.wallpaperTarget == null && windowDetachedI >= 0) { 530 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 531 "Found animating detached wallpaper activity: #" + windowDetachedI + "=" + w); 532 result.setWallpaperTarget(w, windowDetachedI); 533 } 534 if (result.wallpaperTarget == null 535 && (inFreeformSpace || (replacing && mWallpaperTarget != null))) { 536 // In freeform mode we set the wallpaper as its own target, so we don't need an 537 // additional window to make it visible. When we are replacing a window and there was 538 // wallpaper before replacement, we want to keep the window until the new windows fully 539 // appear and can determine the visibility, to avoid flickering. 540 result.setWallpaperTarget(result.topWallpaper, result.topWallpaperIndex); 541 } 542 } 543 544 private boolean updateWallpaperWindowsTarget( 545 WindowList windows, FindWallpaperTargetResult result) { 546 547 boolean targetChanged = false; 548 WindowState wallpaperTarget = result.wallpaperTarget; 549 int wallpaperTargetIndex = result.wallpaperTargetIndex; 550 551 if (mWallpaperTarget != wallpaperTarget 552 && (mLowerWallpaperTarget == null || mLowerWallpaperTarget != wallpaperTarget)) { 553 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 554 "New wallpaper target: " + wallpaperTarget + " oldTarget: " + mWallpaperTarget); 555 556 mLowerWallpaperTarget = null; 557 mUpperWallpaperTarget = null; 558 559 WindowState oldW = mWallpaperTarget; 560 mWallpaperTarget = wallpaperTarget; 561 targetChanged = true; 562 563 // Now what is happening... if the current and new targets are animating, 564 // then we are in our super special mode! 565 if (wallpaperTarget != null && oldW != null) { 566 boolean oldAnim = oldW.isAnimatingLw(); 567 boolean foundAnim = wallpaperTarget.isAnimatingLw(); 568 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 569 "New animation: " + foundAnim + " old animation: " + oldAnim); 570 if (foundAnim && oldAnim) { 571 int oldI = windows.indexOf(oldW); 572 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 573 "New i: " + wallpaperTargetIndex + " old i: " + oldI); 574 if (oldI >= 0) { 575 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 576 "Animating wallpapers: old#" + oldI + "=" + oldW + "; new#" 577 + wallpaperTargetIndex + "=" + wallpaperTarget); 578 579 // Set the new target correctly. 580 if (wallpaperTarget.mAppToken != null 581 && wallpaperTarget.mAppToken.hiddenRequested) { 582 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 583 "Old wallpaper still the target."); 584 mWallpaperTarget = oldW; 585 wallpaperTarget = oldW; 586 wallpaperTargetIndex = oldI; 587 } 588 // Now set the upper and lower wallpaper targets correctly, 589 // and make sure that we are positioning the wallpaper below the lower. 590 else if (wallpaperTargetIndex > oldI) { 591 // The new target is on top of the old one. 592 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 593 "Found target above old target."); 594 mUpperWallpaperTarget = wallpaperTarget; 595 mLowerWallpaperTarget = oldW; 596 wallpaperTarget = oldW; 597 wallpaperTargetIndex = oldI; 598 } else { 599 // The new target is below the old one. 600 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 601 "Found target below old target."); 602 mUpperWallpaperTarget = oldW; 603 mLowerWallpaperTarget = wallpaperTarget; 604 } 605 } 606 } 607 } 608 609 } else if (mLowerWallpaperTarget != null) { 610 // Is it time to stop animating? 611 if (!mLowerWallpaperTarget.isAnimatingLw() || !mUpperWallpaperTarget.isAnimatingLw()) { 612 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "No longer animating wallpaper targets!"); 613 mLowerWallpaperTarget = null; 614 mUpperWallpaperTarget = null; 615 mWallpaperTarget = wallpaperTarget; 616 targetChanged = true; 617 } 618 } 619 620 result.setWallpaperTarget(wallpaperTarget, wallpaperTargetIndex); 621 return targetChanged; 622 } 623 624 boolean updateWallpaperWindowsTargetByLayer( 625 WindowList windows, FindWallpaperTargetResult result) { 626 627 WindowState wallpaperTarget = result.wallpaperTarget; 628 int wallpaperTargetIndex = result.wallpaperTargetIndex; 629 boolean visible = wallpaperTarget != null; 630 631 if (visible) { 632 // The window is visible to the compositor...but is it visible to the user? 633 // That is what the wallpaper cares about. 634 visible = isWallpaperVisible(wallpaperTarget); 635 if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper visibility: " + visible); 636 637 // If the wallpaper target is animating, we may need to copy its layer adjustment. 638 // Only do this if we are not transferring between two wallpaper targets. 639 mWallpaperAnimLayerAdjustment = 640 (mLowerWallpaperTarget == null && wallpaperTarget.mAppToken != null) 641 ? wallpaperTarget.mAppToken.mAppAnimator.animLayerAdjustment : 0; 642 643 final int maxLayer = (mService.mPolicy.getMaxWallpaperLayer() * TYPE_LAYER_MULTIPLIER) 644 + TYPE_LAYER_OFFSET; 645 646 // Now w is the window we are supposed to be behind... but we 647 // need to be sure to also be behind any of its attached windows, 648 // AND any starting window associated with it, AND below the 649 // maximum layer the policy allows for wallpapers. 650 while (wallpaperTargetIndex > 0) { 651 WindowState wb = windows.get(wallpaperTargetIndex - 1); 652 if (wb.mBaseLayer < maxLayer && 653 wb.mAttachedWindow != wallpaperTarget && 654 (wallpaperTarget.mAttachedWindow == null || 655 wb.mAttachedWindow != wallpaperTarget.mAttachedWindow) && 656 (wb.mAttrs.type != TYPE_APPLICATION_STARTING 657 || wallpaperTarget.mToken == null 658 || wb.mToken != wallpaperTarget.mToken)) { 659 // This window is not related to the previous one in any 660 // interesting way, so stop here. 661 break; 662 } 663 wallpaperTarget = wb; 664 wallpaperTargetIndex--; 665 } 666 } else { 667 if (DEBUG_WALLPAPER) Slog.v(TAG, "No wallpaper target"); 668 } 669 670 result.setWallpaperTarget(wallpaperTarget, wallpaperTargetIndex); 671 return visible; 672 } 673 674 boolean updateWallpaperWindowsPlacement(WindowList windows, 675 WindowState wallpaperTarget, int wallpaperTargetIndex, boolean visible) { 676 677 // TODO(multidisplay): Wallpapers on main screen only. 678 final DisplayInfo displayInfo = mService.getDefaultDisplayContentLocked().getDisplayInfo(); 679 final int dw = displayInfo.logicalWidth; 680 final int dh = displayInfo.logicalHeight; 681 682 // Start stepping backwards from here, ensuring that our wallpaper windows 683 // are correctly placed. 684 boolean changed = false; 685 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 686 WindowToken token = mWallpaperTokens.get(curTokenNdx); 687 if (token.hidden == visible) { 688 if (DEBUG_WALLPAPER_LIGHT) Slog.d(TAG, 689 "Wallpaper token " + token + " hidden=" + !visible); 690 token.hidden = !visible; 691 // Need to do a layout to ensure the wallpaper now has the correct size. 692 mService.getDefaultDisplayContentLocked().layoutNeeded = true; 693 } 694 695 final WindowList tokenWindows = token.windows; 696 for (int wallpaperNdx = tokenWindows.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) { 697 WindowState wallpaper = tokenWindows.get(wallpaperNdx); 698 699 if (visible) { 700 updateWallpaperOffset(wallpaper, dw, dh, false); 701 } 702 703 // First, make sure the client has the current visibility state. 704 dispatchWallpaperVisibility(wallpaper, visible); 705 706 wallpaper.mWinAnimator.mAnimLayer = 707 wallpaper.mLayer + mWallpaperAnimLayerAdjustment; 708 if (DEBUG_LAYERS || DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "adjustWallpaper win " 709 + wallpaper + " anim layer: " + wallpaper.mWinAnimator.mAnimLayer); 710 711 // First, if this window is at the current index, then all is well. 712 if (wallpaper == wallpaperTarget) { 713 wallpaperTargetIndex--; 714 wallpaperTarget = wallpaperTargetIndex > 0 715 ? windows.get(wallpaperTargetIndex - 1) : null; 716 continue; 717 } 718 719 // The window didn't match... the current wallpaper window, 720 // wherever it is, is in the wrong place, so make sure it is not in the list. 721 int oldIndex = windows.indexOf(wallpaper); 722 if (oldIndex >= 0) { 723 if (DEBUG_WINDOW_MOVEMENT) Slog.v(TAG, 724 "Wallpaper removing at " + oldIndex + ": " + wallpaper); 725 windows.remove(oldIndex); 726 mService.mWindowsChanged = true; 727 if (oldIndex < wallpaperTargetIndex) { 728 wallpaperTargetIndex--; 729 } 730 } 731 732 // Now stick it in. For apps over wallpaper keep the wallpaper at the bottommost 733 // layer. For keyguard over wallpaper put the wallpaper under the keyguard. 734 int insertionIndex = 0; 735 if (visible && wallpaperTarget != null) { 736 final int type = wallpaperTarget.mAttrs.type; 737 final int privateFlags = wallpaperTarget.mAttrs.privateFlags; 738 if ((privateFlags & PRIVATE_FLAG_KEYGUARD) != 0 739 || type == TYPE_KEYGUARD_SCRIM) { 740 insertionIndex = windows.indexOf(wallpaperTarget); 741 } 742 } 743 if (DEBUG_WALLPAPER_LIGHT || DEBUG_WINDOW_MOVEMENT 744 || (DEBUG_ADD_REMOVE && oldIndex != insertionIndex)) Slog.v(TAG, 745 "Moving wallpaper " + wallpaper 746 + " from " + oldIndex + " to " + insertionIndex); 747 748 windows.add(insertionIndex, wallpaper); 749 mService.mWindowsChanged = true; 750 changed = true; 751 } 752 } 753 754 return changed; 755 } 756 757 boolean adjustWallpaperWindows() { 758 mService.mWindowPlacerLocked.mWallpaperMayChange = false; 759 760 final WindowList windows = mService.getDefaultWindowListLocked(); 761 // First find top-most window that has asked to be on top of the wallpaper; 762 // all wallpapers go behind it. 763 findWallpaperTarget(windows, mFindResults); 764 final boolean targetChanged = updateWallpaperWindowsTarget(windows, mFindResults); 765 final boolean visible = updateWallpaperWindowsTargetByLayer(windows, mFindResults); 766 WindowState wallpaperTarget = mFindResults.wallpaperTarget; 767 int wallpaperTargetIndex = mFindResults.wallpaperTargetIndex; 768 769 if (wallpaperTarget == null && mFindResults.topWallpaper != null) { 770 // There is no wallpaper target, so it goes at the bottom. 771 // We will assume it is the same place as last time, if known. 772 wallpaperTarget = mFindResults.topWallpaper; 773 wallpaperTargetIndex = mFindResults.topWallpaperIndex + 1; 774 } else { 775 // Okay i is the position immediately above the wallpaper. 776 // Look at what is below it for later. 777 wallpaperTarget = wallpaperTargetIndex > 0 778 ? windows.get(wallpaperTargetIndex - 1) : null; 779 } 780 781 if (visible) { 782 if (mWallpaperTarget.mWallpaperX >= 0) { 783 mLastWallpaperX = mWallpaperTarget.mWallpaperX; 784 mLastWallpaperXStep = mWallpaperTarget.mWallpaperXStep; 785 } 786 if (mWallpaperTarget.mWallpaperY >= 0) { 787 mLastWallpaperY = mWallpaperTarget.mWallpaperY; 788 mLastWallpaperYStep = mWallpaperTarget.mWallpaperYStep; 789 } 790 if (mWallpaperTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 791 mLastWallpaperDisplayOffsetX = mWallpaperTarget.mWallpaperDisplayOffsetX; 792 } 793 if (mWallpaperTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 794 mLastWallpaperDisplayOffsetY = mWallpaperTarget.mWallpaperDisplayOffsetY; 795 } 796 } 797 798 final boolean changed = updateWallpaperWindowsPlacement( 799 windows, wallpaperTarget, wallpaperTargetIndex, visible); 800 801 if (targetChanged && DEBUG_WALLPAPER_LIGHT) Slog.d(TAG, "New wallpaper: target=" 802 + mWallpaperTarget + " lower=" + mLowerWallpaperTarget + " upper=" 803 + mUpperWallpaperTarget); 804 805 return changed; 806 } 807 808 boolean processWallpaperDrawPendingTimeout() { 809 if (mWallpaperDrawState == WALLPAPER_DRAW_PENDING) { 810 mWallpaperDrawState = WALLPAPER_DRAW_TIMEOUT; 811 if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, 812 "*** WALLPAPER DRAW TIMEOUT"); 813 return true; 814 } 815 return false; 816 } 817 818 boolean wallpaperTransitionReady() { 819 boolean transitionReady = true; 820 boolean wallpaperReady = true; 821 for (int curTokenIndex = mWallpaperTokens.size() - 1; 822 curTokenIndex >= 0 && wallpaperReady; curTokenIndex--) { 823 WindowToken token = mWallpaperTokens.get(curTokenIndex); 824 for (int curWallpaperIndex = token.windows.size() - 1; curWallpaperIndex >= 0; 825 curWallpaperIndex--) { 826 WindowState wallpaper = token.windows.get(curWallpaperIndex); 827 if (wallpaper.mWallpaperVisible && !wallpaper.isDrawnLw()) { 828 // We've told this wallpaper to be visible, but it is not drawn yet 829 wallpaperReady = false; 830 if (mWallpaperDrawState != WALLPAPER_DRAW_TIMEOUT) { 831 // wait for this wallpaper until it is drawn or timeout 832 transitionReady = false; 833 } 834 if (mWallpaperDrawState == WALLPAPER_DRAW_NORMAL) { 835 mWallpaperDrawState = WALLPAPER_DRAW_PENDING; 836 mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); 837 mService.mH.sendEmptyMessageDelayed(WALLPAPER_DRAW_PENDING_TIMEOUT, 838 WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION); 839 } 840 if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, 841 "Wallpaper should be visible but has not been drawn yet. " + 842 "mWallpaperDrawState=" + mWallpaperDrawState); 843 break; 844 } 845 } 846 } 847 if (wallpaperReady) { 848 mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; 849 mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); 850 } 851 852 return transitionReady; 853 } 854 855 void addWallpaperToken(WindowToken token) { 856 mWallpaperTokens.add(token); 857 } 858 859 void removeWallpaperToken(WindowToken token) { 860 mWallpaperTokens.remove(token); 861 } 862 863 void dump(PrintWriter pw, String prefix) { 864 pw.print(prefix); pw.print("mWallpaperTarget="); pw.println(mWallpaperTarget); 865 if (mLowerWallpaperTarget != null || mUpperWallpaperTarget != null) { 866 pw.print(prefix); pw.print("mLowerWallpaperTarget="); pw.println(mLowerWallpaperTarget); 867 pw.print(prefix); pw.print("mUpperWallpaperTarget="); pw.println(mUpperWallpaperTarget); 868 } 869 pw.print(prefix); pw.print("mLastWallpaperX="); pw.print(mLastWallpaperX); 870 pw.print(" mLastWallpaperY="); pw.println(mLastWallpaperY); 871 if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE 872 || mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 873 pw.print(prefix); 874 pw.print("mLastWallpaperDisplayOffsetX="); pw.print(mLastWallpaperDisplayOffsetX); 875 pw.print(" mLastWallpaperDisplayOffsetY="); pw.println(mLastWallpaperDisplayOffsetY); 876 } 877 } 878 879 void dumpTokens(PrintWriter pw, String prefix, boolean dumpAll) { 880 if (!mWallpaperTokens.isEmpty()) { 881 pw.println(); 882 pw.print(prefix); pw.println("Wallpaper tokens:"); 883 for (int i = mWallpaperTokens.size() - 1; i >= 0; i--) { 884 WindowToken token = mWallpaperTokens.get(i); 885 pw.print(prefix); pw.print("Wallpaper #"); pw.print(i); 886 pw.print(' '); pw.print(token); 887 if (dumpAll) { 888 pw.println(':'); 889 token.dump(pw, " "); 890 } else { 891 pw.println(); 892 } 893 } 894 } 895 } 896 897 /** Helper class for storing the results of a wallpaper target find operation. */ 898 final private static class FindWallpaperTargetResult { 899 int topWallpaperIndex = 0; 900 WindowState topWallpaper = null; 901 int wallpaperTargetIndex = 0; 902 WindowState wallpaperTarget = null; 903 904 void setTopWallpaper(WindowState win, int index) { 905 topWallpaper = win; 906 topWallpaperIndex = index; 907 } 908 909 void setWallpaperTarget(WindowState win, int index) { 910 wallpaperTarget = win; 911 wallpaperTargetIndex = index; 912 } 913 914 void reset() { 915 topWallpaperIndex = 0; 916 topWallpaper = null; 917 wallpaperTargetIndex = 0; 918 wallpaperTarget = null; 919 } 920 } 921} 922