WallpaperController.java revision 4551c8bbee4114fa884938dbe90ac0d06ca78fc5
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.ViewGroup.LayoutParams.MATCH_PARENT; 21import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER; 22import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED; 23import static android.view.WindowManager.LayoutParams.TYPE_WALLPAPER; 24import static android.view.WindowManagerPolicy.FINISH_LAYOUT_REDO_WALLPAPER; 25 26import static com.android.server.wm.AppTransition.TRANSIT_FLAG_KEYGUARD_GOING_AWAY_WITH_WALLPAPER; 27import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_APP_TRANSITIONS; 28import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER; 29import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER_LIGHT; 30import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME; 31import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; 32import static com.android.server.wm.WindowManagerService.H.WALLPAPER_DRAW_PENDING_TIMEOUT; 33 34import android.os.Bundle; 35import android.os.Debug; 36import android.os.IBinder; 37import android.os.RemoteException; 38import android.os.SystemClock; 39import android.util.ArraySet; 40import android.util.Slog; 41import android.view.DisplayInfo; 42import android.view.WindowManager; 43import android.view.animation.Animation; 44 45import java.io.PrintWriter; 46import java.util.ArrayList; 47 48/** 49 * Controls wallpaper windows visibility, ordering, and so on. 50 * NOTE: All methods in this class must be called with the window manager service lock held. 51 */ 52class WallpaperController { 53 private static final String TAG = TAG_WITH_CLASS_NAME ? "WallpaperController" : TAG_WM; 54 final private WindowManagerService mService; 55 56 private final ArrayList<WallpaperWindowToken> mWallpaperTokens = new ArrayList<>(); 57 58 // If non-null, this is the currently visible window that is associated 59 // with the wallpaper. 60 private WindowState mWallpaperTarget = null; 61 // If non-null, we are in the middle of animating from one wallpaper target 62 // to another, and this is the previous wallpaper target. 63 private WindowState mPrevWallpaperTarget = null; 64 65 private int mWallpaperAnimLayerAdjustment; 66 67 private float mLastWallpaperX = -1; 68 private float mLastWallpaperY = -1; 69 private float mLastWallpaperXStep = -1; 70 private float mLastWallpaperYStep = -1; 71 private int mLastWallpaperDisplayOffsetX = Integer.MIN_VALUE; 72 private int mLastWallpaperDisplayOffsetY = Integer.MIN_VALUE; 73 74 // This is set when we are waiting for a wallpaper to tell us it is done 75 // changing its scroll position. 76 private WindowState mWaitingOnWallpaper; 77 78 // The last time we had a timeout when waiting for a wallpaper. 79 private long mLastWallpaperTimeoutTime; 80 // We give a wallpaper up to 150ms to finish scrolling. 81 private static final long WALLPAPER_TIMEOUT = 150; 82 // Time we wait after a timeout before trying to wait again. 83 private static final long WALLPAPER_TIMEOUT_RECOVERY = 10000; 84 85 // Set to the wallpaper window we would like to hide once the transition animations are done. 86 // This is useful in cases where we don't want the wallpaper to be hidden when the close app 87 // is a wallpaper target and is done animating out, but the opening app isn't a wallpaper 88 // target and isn't done animating in. 89 WindowState mDeferredHideWallpaper = null; 90 91 // We give a wallpaper up to 500ms to finish drawing before playing app transitions. 92 private static final long WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION = 500; 93 private static final int WALLPAPER_DRAW_NORMAL = 0; 94 private static final int WALLPAPER_DRAW_PENDING = 1; 95 private static final int WALLPAPER_DRAW_TIMEOUT = 2; 96 private int mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; 97 98 private final FindWallpaperTargetResult mFindResults = new FindWallpaperTargetResult(); 99 100 public WallpaperController(WindowManagerService service) { 101 mService = service; 102 } 103 104 WindowState getWallpaperTarget() { 105 return mWallpaperTarget; 106 } 107 108 boolean isWallpaperTarget(WindowState win) { 109 return win == mWallpaperTarget; 110 } 111 112 boolean isBelowWallpaperTarget(WindowState win) { 113 return mWallpaperTarget != null && mWallpaperTarget.mLayer >= win.mBaseLayer; 114 } 115 116 boolean isWallpaperVisible() { 117 return isWallpaperVisible(mWallpaperTarget); 118 } 119 120 /** 121 * Starts {@param a} on all wallpaper windows. 122 */ 123 void startWallpaperAnimation(Animation a) { 124 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 125 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 126 token.startAnimation(a); 127 } 128 } 129 130 private boolean isWallpaperVisible(WindowState wallpaperTarget) { 131 if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper vis: target " + wallpaperTarget + ", obscured=" 132 + (wallpaperTarget != null ? Boolean.toString(wallpaperTarget.mObscured) : "??") 133 + " anim=" + ((wallpaperTarget != null && wallpaperTarget.mAppToken != null) 134 ? wallpaperTarget.mAppToken.mAppAnimator.animation : null) 135 + " prev=" + mPrevWallpaperTarget); 136 return (wallpaperTarget != null 137 && (!wallpaperTarget.mObscured || (wallpaperTarget.mAppToken != null 138 && wallpaperTarget.mAppToken.mAppAnimator.animation != null))) 139 || mPrevWallpaperTarget != null; 140 } 141 142 boolean isWallpaperTargetAnimating() { 143 return mWallpaperTarget != null && mWallpaperTarget.mWinAnimator.isAnimationSet() 144 && !mWallpaperTarget.mWinAnimator.isDummyAnimation(); 145 } 146 147 void updateWallpaperVisibility() { 148 final boolean visible = isWallpaperVisible(mWallpaperTarget); 149 150 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 151 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 152 token.updateWallpaperVisibility(visible); 153 } 154 } 155 156 void hideDeferredWallpapersIfNeeded() { 157 if (mDeferredHideWallpaper != null) { 158 hideWallpapers(mDeferredHideWallpaper); 159 mDeferredHideWallpaper = null; 160 } 161 } 162 163 void hideWallpapers(final WindowState winGoingAway) { 164 if (mWallpaperTarget != null 165 && (mWallpaperTarget != winGoingAway || mPrevWallpaperTarget != null)) { 166 return; 167 } 168 if (mService.mAppTransition.isRunning()) { 169 // Defer hiding the wallpaper when app transition is running until the animations 170 // are done. 171 mDeferredHideWallpaper = winGoingAway; 172 return; 173 } 174 175 final boolean wasDeferred = (mDeferredHideWallpaper == winGoingAway); 176 for (int i = mWallpaperTokens.size() - 1; i >= 0; i--) { 177 final WallpaperWindowToken token = mWallpaperTokens.get(i); 178 token.hideWallpaperToken(wasDeferred, "hideWallpapers"); 179 if (DEBUG_WALLPAPER_LIGHT && !token.hidden) Slog.d(TAG, "Hiding wallpaper " + token 180 + " from " + winGoingAway + " target=" + mWallpaperTarget + " prev=" 181 + mPrevWallpaperTarget + "\n" + Debug.getCallers(5, " ")); 182 } 183 } 184 185 boolean updateWallpaperOffset(WindowState wallpaperWin, int dw, int dh, boolean sync) { 186 boolean rawChanged = false; 187 // Set the default wallpaper x-offset to either edge of the screen (depending on RTL), to 188 // match the behavior of most Launchers 189 float defaultWallpaperX = wallpaperWin.isRtl() ? 1f : 0f; 190 float wpx = mLastWallpaperX >= 0 ? mLastWallpaperX : defaultWallpaperX; 191 float wpxs = mLastWallpaperXStep >= 0 ? mLastWallpaperXStep : -1.0f; 192 int availw = wallpaperWin.mFrame.right - wallpaperWin.mFrame.left - dw; 193 int offset = availw > 0 ? -(int)(availw * wpx + .5f) : 0; 194 if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 195 offset += mLastWallpaperDisplayOffsetX; 196 } 197 boolean changed = wallpaperWin.mXOffset != offset; 198 if (changed) { 199 if (DEBUG_WALLPAPER) Slog.v(TAG, "Update wallpaper " + wallpaperWin + " x: " + offset); 200 wallpaperWin.mXOffset = offset; 201 } 202 if (wallpaperWin.mWallpaperX != wpx || wallpaperWin.mWallpaperXStep != wpxs) { 203 wallpaperWin.mWallpaperX = wpx; 204 wallpaperWin.mWallpaperXStep = wpxs; 205 rawChanged = true; 206 } 207 208 float wpy = mLastWallpaperY >= 0 ? mLastWallpaperY : 0.5f; 209 float wpys = mLastWallpaperYStep >= 0 ? mLastWallpaperYStep : -1.0f; 210 int availh = wallpaperWin.mFrame.bottom - wallpaperWin.mFrame.top - dh; 211 offset = availh > 0 ? -(int)(availh * wpy + .5f) : 0; 212 if (mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 213 offset += mLastWallpaperDisplayOffsetY; 214 } 215 if (wallpaperWin.mYOffset != offset) { 216 if (DEBUG_WALLPAPER) Slog.v(TAG, "Update wallpaper " + wallpaperWin + " y: " + offset); 217 changed = true; 218 wallpaperWin.mYOffset = offset; 219 } 220 if (wallpaperWin.mWallpaperY != wpy || wallpaperWin.mWallpaperYStep != wpys) { 221 wallpaperWin.mWallpaperY = wpy; 222 wallpaperWin.mWallpaperYStep = wpys; 223 rawChanged = true; 224 } 225 226 if (rawChanged && (wallpaperWin.mAttrs.privateFlags & 227 WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS) != 0) { 228 try { 229 if (DEBUG_WALLPAPER) Slog.v(TAG, "Report new wp offset " 230 + wallpaperWin + " x=" + wallpaperWin.mWallpaperX 231 + " y=" + wallpaperWin.mWallpaperY); 232 if (sync) { 233 mWaitingOnWallpaper = wallpaperWin; 234 } 235 wallpaperWin.mClient.dispatchWallpaperOffsets( 236 wallpaperWin.mWallpaperX, wallpaperWin.mWallpaperY, 237 wallpaperWin.mWallpaperXStep, wallpaperWin.mWallpaperYStep, sync); 238 if (sync) { 239 if (mWaitingOnWallpaper != null) { 240 long start = SystemClock.uptimeMillis(); 241 if ((mLastWallpaperTimeoutTime + WALLPAPER_TIMEOUT_RECOVERY) 242 < start) { 243 try { 244 if (DEBUG_WALLPAPER) Slog.v(TAG, 245 "Waiting for offset complete..."); 246 mService.mWindowMap.wait(WALLPAPER_TIMEOUT); 247 } catch (InterruptedException e) { 248 } 249 if (DEBUG_WALLPAPER) Slog.v(TAG, "Offset complete!"); 250 if ((start + WALLPAPER_TIMEOUT) < SystemClock.uptimeMillis()) { 251 Slog.i(TAG, "Timeout waiting for wallpaper to offset: " 252 + wallpaperWin); 253 mLastWallpaperTimeoutTime = start; 254 } 255 } 256 mWaitingOnWallpaper = null; 257 } 258 } 259 } catch (RemoteException e) { 260 } 261 } 262 263 return changed; 264 } 265 266 void setWindowWallpaperPosition( 267 WindowState window, float x, float y, float xStep, float yStep) { 268 if (window.mWallpaperX != x || window.mWallpaperY != y) { 269 window.mWallpaperX = x; 270 window.mWallpaperY = y; 271 window.mWallpaperXStep = xStep; 272 window.mWallpaperYStep = yStep; 273 updateWallpaperOffsetLocked(window, true); 274 } 275 } 276 277 void setWindowWallpaperDisplayOffset(WindowState window, int x, int y) { 278 if (window.mWallpaperDisplayOffsetX != x || window.mWallpaperDisplayOffsetY != y) { 279 window.mWallpaperDisplayOffsetX = x; 280 window.mWallpaperDisplayOffsetY = y; 281 updateWallpaperOffsetLocked(window, true); 282 } 283 } 284 285 Bundle sendWindowWallpaperCommand( 286 WindowState window, String action, int x, int y, int z, Bundle extras, boolean sync) { 287 if (window == mWallpaperTarget || window == mPrevWallpaperTarget) { 288 boolean doWait = sync; 289 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 290 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 291 token.sendWindowWallpaperCommand(action, x, y, z, extras, sync); 292 } 293 294 if (doWait) { 295 // TODO: Need to wait for result. 296 } 297 } 298 299 return null; 300 } 301 302 private void updateWallpaperOffsetLocked(WindowState changingTarget, boolean sync) { 303 final DisplayContent displayContent = changingTarget.getDisplayContent(); 304 if (displayContent == null) { 305 return; 306 } 307 final DisplayInfo displayInfo = displayContent.getDisplayInfo(); 308 final int dw = displayInfo.logicalWidth; 309 final int dh = displayInfo.logicalHeight; 310 311 WindowState target = mWallpaperTarget; 312 if (target != null) { 313 if (target.mWallpaperX >= 0) { 314 mLastWallpaperX = target.mWallpaperX; 315 } else if (changingTarget.mWallpaperX >= 0) { 316 mLastWallpaperX = changingTarget.mWallpaperX; 317 } 318 if (target.mWallpaperY >= 0) { 319 mLastWallpaperY = target.mWallpaperY; 320 } else if (changingTarget.mWallpaperY >= 0) { 321 mLastWallpaperY = changingTarget.mWallpaperY; 322 } 323 if (target.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 324 mLastWallpaperDisplayOffsetX = target.mWallpaperDisplayOffsetX; 325 } else if (changingTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 326 mLastWallpaperDisplayOffsetX = changingTarget.mWallpaperDisplayOffsetX; 327 } 328 if (target.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 329 mLastWallpaperDisplayOffsetY = target.mWallpaperDisplayOffsetY; 330 } else if (changingTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 331 mLastWallpaperDisplayOffsetY = changingTarget.mWallpaperDisplayOffsetY; 332 } 333 if (target.mWallpaperXStep >= 0) { 334 mLastWallpaperXStep = target.mWallpaperXStep; 335 } else if (changingTarget.mWallpaperXStep >= 0) { 336 mLastWallpaperXStep = changingTarget.mWallpaperXStep; 337 } 338 if (target.mWallpaperYStep >= 0) { 339 mLastWallpaperYStep = target.mWallpaperYStep; 340 } else if (changingTarget.mWallpaperYStep >= 0) { 341 mLastWallpaperYStep = changingTarget.mWallpaperYStep; 342 } 343 } 344 345 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 346 mWallpaperTokens.get(curTokenNdx).updateWallpaperOffset(dw, dh, sync); 347 } 348 } 349 350 void clearLastWallpaperTimeoutTime() { 351 mLastWallpaperTimeoutTime = 0; 352 } 353 354 void wallpaperCommandComplete(IBinder window) { 355 if (mWaitingOnWallpaper != null && 356 mWaitingOnWallpaper.mClient.asBinder() == window) { 357 mWaitingOnWallpaper = null; 358 mService.mWindowMap.notifyAll(); 359 } 360 } 361 362 void wallpaperOffsetsComplete(IBinder window) { 363 if (mWaitingOnWallpaper != null && 364 mWaitingOnWallpaper.mClient.asBinder() == window) { 365 mWaitingOnWallpaper = null; 366 mService.mWindowMap.notifyAll(); 367 } 368 } 369 370 int getAnimLayerAdjustment() { 371 return mWallpaperAnimLayerAdjustment; 372 } 373 374 private void findWallpaperTarget(DisplayContent dc , FindWallpaperTargetResult result) { 375 final WindowAnimator winAnimator = mService.mAnimator; 376 result.reset(); 377 if (mService.isStackVisibleLocked(FREEFORM_WORKSPACE_STACK_ID)) { 378 // In freeform mode we set the wallpaper as its own target, so we don't need an 379 // additional window to make it visible. 380 result.setUseTopWallpaperAsTarget(true); 381 } 382 383 dc.forAllWindows(w -> { 384 if ((w.mAttrs.type == TYPE_WALLPAPER)) { 385 if (result.topWallpaper == null || result.resetTopWallpaper) { 386 result.setTopWallpaper(w); 387 result.resetTopWallpaper = false; 388 } 389 return false; 390 } 391 392 result.resetTopWallpaper = true; 393 if (w != winAnimator.mWindowDetachedWallpaper && w.mAppToken != null) { 394 // If this window's app token is hidden and not animating, 395 // it is of no interest to us. 396 if (w.mAppToken.hidden && w.mAppToken.mAppAnimator.animation == null) { 397 if (DEBUG_WALLPAPER) Slog.v(TAG, 398 "Skipping hidden and not animating token: " + w); 399 return false; 400 } 401 } 402 if (DEBUG_WALLPAPER) Slog.v(TAG, "Win " + w + ": isOnScreen=" + w.isOnScreen() 403 + " mDrawState=" + w.mWinAnimator.mDrawState); 404 405 if (w.mWillReplaceWindow && mWallpaperTarget == null 406 && !result.useTopWallpaperAsTarget) { 407 // When we are replacing a window and there was wallpaper before replacement, we 408 // want to keep the window until the new windows fully appear and can determine the 409 // visibility, to avoid flickering. 410 result.setUseTopWallpaperAsTarget(true); 411 } 412 413 final boolean keyguardGoingAwayWithWallpaper = (w.mAppToken != null 414 && AppTransition.isKeyguardGoingAwayTransit( 415 w.mAppToken.mAppAnimator.getTransit()) 416 && (w.mAppToken.mAppAnimator.getTransitFlags() 417 & TRANSIT_FLAG_KEYGUARD_GOING_AWAY_WITH_WALLPAPER) != 0); 418 419 boolean needsShowWhenLockedWallpaper = false; 420 if ((w.mAttrs.flags & FLAG_SHOW_WHEN_LOCKED) != 0 421 && mService.mPolicy.isKeyguardLocked() 422 && mService.mPolicy.isKeyguardOccluded()) { 423 // The lowest show when locked window decides whether we need to put the wallpaper 424 // behind. 425 needsShowWhenLockedWallpaper = !isFullscreen(w.mAttrs) 426 || (w.mAppToken != null && !w.mAppToken.fillsParent()); 427 } 428 429 if (keyguardGoingAwayWithWallpaper || needsShowWhenLockedWallpaper) { 430 // Keep the wallpaper during Keyguard exit but also when it's needed for a 431 // non-fullscreen show when locked activity. 432 result.setUseTopWallpaperAsTarget(true); 433 } 434 435 final boolean hasWallpaper = (w.mAttrs.flags & FLAG_SHOW_WALLPAPER) != 0; 436 if (hasWallpaper && w.isOnScreen() && (mWallpaperTarget == w || w.isDrawFinishedLw())) { 437 if (DEBUG_WALLPAPER) Slog.v(TAG, "Found wallpaper target: " + w); 438 result.setWallpaperTarget(w); 439 if (w == mWallpaperTarget && w.mWinAnimator.isAnimationSet()) { 440 // The current wallpaper target is animating, so we'll look behind it for 441 // another possible target and figure out what is going on later. 442 if (DEBUG_WALLPAPER) Slog.v(TAG, 443 "Win " + w + ": token animating, looking behind."); 444 } 445 // Found a target! End search. 446 return true; 447 } else if (w == winAnimator.mWindowDetachedWallpaper) { 448 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 449 "Found animating detached wallpaper target win: " + w); 450 result.setUseTopWallpaperAsTarget(true); 451 } 452 return false; 453 }, true /* traverseTopToBottom */); 454 455 if (result.wallpaperTarget == null && result.useTopWallpaperAsTarget) { 456 result.setWallpaperTarget(result.topWallpaper); 457 } 458 } 459 460 private boolean isFullscreen(WindowManager.LayoutParams attrs) { 461 return attrs.x == 0 && attrs.y == 0 462 && attrs.width == MATCH_PARENT && attrs.height == MATCH_PARENT; 463 } 464 465 /** Updates the target wallpaper if needed and returns true if an update happened. */ 466 private void updateWallpaperWindowsTarget(DisplayContent dc, 467 FindWallpaperTargetResult result) { 468 469 WindowState wallpaperTarget = result.wallpaperTarget; 470 471 if (mWallpaperTarget == wallpaperTarget 472 || (mPrevWallpaperTarget != null && mPrevWallpaperTarget == wallpaperTarget)) { 473 474 if (mPrevWallpaperTarget == null) { 475 return; 476 } 477 478 // Is it time to stop animating? 479 if (!mPrevWallpaperTarget.isAnimatingLw()) { 480 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "No longer animating wallpaper targets!"); 481 mPrevWallpaperTarget = null; 482 mWallpaperTarget = wallpaperTarget; 483 } 484 return; 485 } 486 487 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 488 "New wallpaper target: " + wallpaperTarget + " prevTarget: " + mWallpaperTarget); 489 490 mPrevWallpaperTarget = null; 491 492 final WindowState prevWallpaperTarget = mWallpaperTarget; 493 mWallpaperTarget = wallpaperTarget; 494 495 if (wallpaperTarget == null || prevWallpaperTarget == null) { 496 return; 497 } 498 499 // Now what is happening... if the current and new targets are animating, 500 // then we are in our super special mode! 501 boolean oldAnim = prevWallpaperTarget.isAnimatingLw(); 502 boolean foundAnim = wallpaperTarget.isAnimatingLw(); 503 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 504 "New animation: " + foundAnim + " old animation: " + oldAnim); 505 506 if (!foundAnim || !oldAnim) { 507 return; 508 } 509 510 if (dc.getWindow(w -> w == prevWallpaperTarget) == null) { 511 return; 512 } 513 514 final boolean newTargetHidden = wallpaperTarget.mAppToken != null 515 && wallpaperTarget.mAppToken.hiddenRequested; 516 final boolean oldTargetHidden = prevWallpaperTarget.mAppToken != null 517 && prevWallpaperTarget.mAppToken.hiddenRequested; 518 519 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "Animating wallpapers:" + " old: " 520 + prevWallpaperTarget + " hidden=" + oldTargetHidden + " new: " + wallpaperTarget 521 + " hidden=" + newTargetHidden); 522 523 mPrevWallpaperTarget = prevWallpaperTarget; 524 525 if (newTargetHidden && !oldTargetHidden) { 526 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "Old wallpaper still the target."); 527 // Use the old target if new target is hidden but old target 528 // is not. If they're both hidden, still use the new target. 529 mWallpaperTarget = prevWallpaperTarget; 530 } else if (newTargetHidden == oldTargetHidden 531 && !mService.mOpeningApps.contains(wallpaperTarget.mAppToken) 532 && (mService.mOpeningApps.contains(prevWallpaperTarget.mAppToken) 533 || mService.mClosingApps.contains(prevWallpaperTarget.mAppToken))) { 534 // If they're both hidden (or both not hidden), prefer the one that's currently in 535 // opening or closing app list, this allows transition selection logic to better 536 // determine the wallpaper status of opening/closing apps. 537 mWallpaperTarget = prevWallpaperTarget; 538 } 539 540 result.setWallpaperTarget(wallpaperTarget); 541 } 542 543 private void updateWallpaperTokens(boolean visible) { 544 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 545 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 546 token.updateWallpaperWindows(visible, mWallpaperAnimLayerAdjustment); 547 } 548 } 549 550 void adjustWallpaperWindows(DisplayContent dc) { 551 mService.mRoot.mWallpaperMayChange = false; 552 553 // First find top-most window that has asked to be on top of the wallpaper; 554 // all wallpapers go behind it. 555 findWallpaperTarget(dc, mFindResults); 556 updateWallpaperWindowsTarget(dc, mFindResults); 557 558 // The window is visible to the compositor...but is it visible to the user? 559 // That is what the wallpaper cares about. 560 final boolean visible = mWallpaperTarget != null && isWallpaperVisible(mWallpaperTarget); 561 if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper visibility: " + visible); 562 563 if (visible) { 564 // If the wallpaper target is animating, we may need to copy its layer adjustment. 565 // Only do this if we are not transferring between two wallpaper targets. 566 mWallpaperAnimLayerAdjustment = 567 (mPrevWallpaperTarget == null && mWallpaperTarget.mAppToken != null) 568 ? mWallpaperTarget.mAppToken.mAppAnimator.animLayerAdjustment : 0; 569 570 if (mWallpaperTarget.mWallpaperX >= 0) { 571 mLastWallpaperX = mWallpaperTarget.mWallpaperX; 572 mLastWallpaperXStep = mWallpaperTarget.mWallpaperXStep; 573 } 574 if (mWallpaperTarget.mWallpaperY >= 0) { 575 mLastWallpaperY = mWallpaperTarget.mWallpaperY; 576 mLastWallpaperYStep = mWallpaperTarget.mWallpaperYStep; 577 } 578 if (mWallpaperTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 579 mLastWallpaperDisplayOffsetX = mWallpaperTarget.mWallpaperDisplayOffsetX; 580 } 581 if (mWallpaperTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 582 mLastWallpaperDisplayOffsetY = mWallpaperTarget.mWallpaperDisplayOffsetY; 583 } 584 } 585 586 updateWallpaperTokens(visible); 587 588 if (DEBUG_WALLPAPER_LIGHT) Slog.d(TAG, "New wallpaper: target=" + mWallpaperTarget 589 + " prev=" + mPrevWallpaperTarget); 590 } 591 592 boolean processWallpaperDrawPendingTimeout() { 593 if (mWallpaperDrawState == WALLPAPER_DRAW_PENDING) { 594 mWallpaperDrawState = WALLPAPER_DRAW_TIMEOUT; 595 if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, 596 "*** WALLPAPER DRAW TIMEOUT"); 597 return true; 598 } 599 return false; 600 } 601 602 boolean wallpaperTransitionReady() { 603 boolean transitionReady = true; 604 boolean wallpaperReady = true; 605 for (int curTokenIndex = mWallpaperTokens.size() - 1; 606 curTokenIndex >= 0 && wallpaperReady; curTokenIndex--) { 607 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenIndex); 608 if (token.hasVisibleNotDrawnWallpaper()) { 609 // We've told this wallpaper to be visible, but it is not drawn yet 610 wallpaperReady = false; 611 if (mWallpaperDrawState != WALLPAPER_DRAW_TIMEOUT) { 612 // wait for this wallpaper until it is drawn or timeout 613 transitionReady = false; 614 } 615 if (mWallpaperDrawState == WALLPAPER_DRAW_NORMAL) { 616 mWallpaperDrawState = WALLPAPER_DRAW_PENDING; 617 mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); 618 mService.mH.sendEmptyMessageDelayed(WALLPAPER_DRAW_PENDING_TIMEOUT, 619 WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION); 620 } 621 if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, 622 "Wallpaper should be visible but has not been drawn yet. " + 623 "mWallpaperDrawState=" + mWallpaperDrawState); 624 break; 625 } 626 } 627 if (wallpaperReady) { 628 mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; 629 mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); 630 } 631 632 return transitionReady; 633 } 634 635 /** 636 * Adjusts the wallpaper windows if the input display has a pending wallpaper layout or one of 637 * the opening apps should be a wallpaper target. 638 */ 639 void adjustWallpaperWindowsForAppTransitionIfNeeded(DisplayContent dc, 640 ArraySet<AppWindowToken> openingApps) { 641 boolean adjust = false; 642 if ((dc.pendingLayoutChanges & FINISH_LAYOUT_REDO_WALLPAPER) != 0) { 643 adjust = true; 644 } else { 645 for (int i = openingApps.size() - 1; i >= 0; --i) { 646 final AppWindowToken token = openingApps.valueAt(i); 647 if (token.windowsCanBeWallpaperTarget()) { 648 adjust = true; 649 break; 650 } 651 } 652 } 653 654 if (adjust) { 655 adjustWallpaperWindows(dc); 656 } 657 } 658 659 void addWallpaperToken(WallpaperWindowToken token) { 660 mWallpaperTokens.add(token); 661 } 662 663 void removeWallpaperToken(WallpaperWindowToken token) { 664 mWallpaperTokens.remove(token); 665 } 666 667 void dump(PrintWriter pw, String prefix) { 668 pw.print(prefix); pw.print("mWallpaperTarget="); pw.println(mWallpaperTarget); 669 if (mPrevWallpaperTarget != null) { 670 pw.print(prefix); pw.print("mPrevWallpaperTarget="); pw.println(mPrevWallpaperTarget); 671 } 672 pw.print(prefix); pw.print("mLastWallpaperX="); pw.print(mLastWallpaperX); 673 pw.print(" mLastWallpaperY="); pw.println(mLastWallpaperY); 674 if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE 675 || mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 676 pw.print(prefix); 677 pw.print("mLastWallpaperDisplayOffsetX="); pw.print(mLastWallpaperDisplayOffsetX); 678 pw.print(" mLastWallpaperDisplayOffsetY="); pw.println(mLastWallpaperDisplayOffsetY); 679 } 680 681 if (mWallpaperAnimLayerAdjustment != 0) { 682 pw.println(prefix + "mWallpaperAnimLayerAdjustment=" + mWallpaperAnimLayerAdjustment); 683 } 684 } 685 686 /** Helper class for storing the results of a wallpaper target find operation. */ 687 final private static class FindWallpaperTargetResult { 688 WindowState topWallpaper = null; 689 boolean useTopWallpaperAsTarget = false; 690 WindowState wallpaperTarget = null; 691 boolean resetTopWallpaper = false; 692 693 void setTopWallpaper(WindowState win) { 694 topWallpaper = win; 695 } 696 697 void setWallpaperTarget(WindowState win) { 698 wallpaperTarget = win; 699 } 700 701 void setUseTopWallpaperAsTarget(boolean topWallpaperAsTarget) { 702 useTopWallpaperAsTarget = topWallpaperAsTarget; 703 } 704 705 void reset() { 706 topWallpaper = null; 707 wallpaperTarget = null; 708 useTopWallpaperAsTarget = false; 709 resetTopWallpaper = false; 710 } 711 } 712} 713