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 17 package com.android.server.wm; 18 19 import com.android.internal.util.ToBooleanFunction; 20 21 import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID; 22 import static android.view.ViewGroup.LayoutParams.MATCH_PARENT; 23 import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER; 24 import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED; 25 import static android.view.WindowManager.LayoutParams.TYPE_WALLPAPER; 26 import static android.view.WindowManagerPolicy.FINISH_LAYOUT_REDO_WALLPAPER; 27 28 import static com.android.server.wm.AppTransition.TRANSIT_FLAG_KEYGUARD_GOING_AWAY_WITH_WALLPAPER; 29 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_APP_TRANSITIONS; 30 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER; 31 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER_LIGHT; 32 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME; 33 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; 34 import static com.android.server.wm.WindowManagerService.H.WALLPAPER_DRAW_PENDING_TIMEOUT; 35 36 import android.os.Bundle; 37 import android.os.Debug; 38 import android.os.IBinder; 39 import android.os.RemoteException; 40 import android.os.SystemClock; 41 import android.util.ArraySet; 42 import android.util.Slog; 43 import android.view.DisplayInfo; 44 import android.view.WindowManager; 45 import android.view.animation.Animation; 46 47 import java.io.PrintWriter; 48 import java.util.ArrayList; 49 50 /** 51 * Controls wallpaper windows visibility, ordering, and so on. 52 * NOTE: All methods in this class must be called with the window manager service lock held. 53 */ 54 class WallpaperController { 55 private static final String TAG = TAG_WITH_CLASS_NAME ? "WallpaperController" : TAG_WM; 56 private WindowManagerService mService; 57 58 private final ArrayList<WallpaperWindowToken> mWallpaperTokens = new ArrayList<>(); 59 60 // If non-null, this is the currently visible window that is associated 61 // with the wallpaper. 62 private WindowState mWallpaperTarget = null; 63 // If non-null, we are in the middle of animating from one wallpaper target 64 // to another, and this is the previous wallpaper target. 65 private WindowState mPrevWallpaperTarget = null; 66 67 private int mWallpaperAnimLayerAdjustment; 68 69 private float mLastWallpaperX = -1; 70 private float mLastWallpaperY = -1; 71 private float mLastWallpaperXStep = -1; 72 private float mLastWallpaperYStep = -1; 73 private int mLastWallpaperDisplayOffsetX = Integer.MIN_VALUE; 74 private int mLastWallpaperDisplayOffsetY = Integer.MIN_VALUE; 75 76 // This is set when we are waiting for a wallpaper to tell us it is done 77 // changing its scroll position. 78 private WindowState mWaitingOnWallpaper; 79 80 // The last time we had a timeout when waiting for a wallpaper. 81 private long mLastWallpaperTimeoutTime; 82 // We give a wallpaper up to 150ms to finish scrolling. 83 private static final long WALLPAPER_TIMEOUT = 150; 84 // Time we wait after a timeout before trying to wait again. 85 private static final long WALLPAPER_TIMEOUT_RECOVERY = 10000; 86 87 // Set to the wallpaper window we would like to hide once the transition animations are done. 88 // This is useful in cases where we don't want the wallpaper to be hidden when the close app 89 // is a wallpaper target and is done animating out, but the opening app isn't a wallpaper 90 // target and isn't done animating in. 91 WindowState mDeferredHideWallpaper = null; 92 93 // We give a wallpaper up to 500ms to finish drawing before playing app transitions. 94 private static final long WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION = 500; 95 private static final int WALLPAPER_DRAW_NORMAL = 0; 96 private static final int WALLPAPER_DRAW_PENDING = 1; 97 private static final int WALLPAPER_DRAW_TIMEOUT = 2; 98 private int mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; 99 100 private final FindWallpaperTargetResult mFindResults = new FindWallpaperTargetResult(); 101 102 private final ToBooleanFunction<WindowState> mFindWallpaperTargetFunction = w -> { 103 final WindowAnimator winAnimator = mService.mAnimator; 104 if ((w.mAttrs.type == TYPE_WALLPAPER)) { 105 if (mFindResults.topWallpaper == null || mFindResults.resetTopWallpaper) { 106 mFindResults.setTopWallpaper(w); 107 mFindResults.resetTopWallpaper = false; 108 } 109 return false; 110 } 111 112 mFindResults.resetTopWallpaper = true; 113 if (w != winAnimator.mWindowDetachedWallpaper && w.mAppToken != null) { 114 // If this window's app token is hidden and not animating, it is of no interest to us. 115 if (w.mAppToken.hidden && w.mAppToken.mAppAnimator.animation == null) { 116 if (DEBUG_WALLPAPER) Slog.v(TAG, 117 "Skipping hidden and not animating token: " + w); 118 return false; 119 } 120 } 121 if (DEBUG_WALLPAPER) Slog.v(TAG, "Win " + w + ": isOnScreen=" + w.isOnScreen() 122 + " mDrawState=" + w.mWinAnimator.mDrawState); 123 124 if (w.mWillReplaceWindow && mWallpaperTarget == null 125 && !mFindResults.useTopWallpaperAsTarget) { 126 // When we are replacing a window and there was wallpaper before replacement, we want to 127 // keep the window until the new windows fully appear and can determine the visibility, 128 // to avoid flickering. 129 mFindResults.setUseTopWallpaperAsTarget(true); 130 } 131 132 final boolean keyguardGoingAwayWithWallpaper = (w.mAppToken != null 133 && AppTransition.isKeyguardGoingAwayTransit( 134 w.mAppToken.mAppAnimator.getTransit()) 135 && (w.mAppToken.mAppAnimator.getTransitFlags() 136 & TRANSIT_FLAG_KEYGUARD_GOING_AWAY_WITH_WALLPAPER) != 0); 137 138 boolean needsShowWhenLockedWallpaper = false; 139 if ((w.mAttrs.flags & FLAG_SHOW_WHEN_LOCKED) != 0 140 && mService.mPolicy.isKeyguardLocked() 141 && mService.mPolicy.isKeyguardOccluded()) { 142 // The lowest show when locked window decides whether we need to put the wallpaper 143 // behind. 144 needsShowWhenLockedWallpaper = !isFullscreen(w.mAttrs) 145 || (w.mAppToken != null && !w.mAppToken.fillsParent()); 146 } 147 148 if (keyguardGoingAwayWithWallpaper || needsShowWhenLockedWallpaper) { 149 // Keep the wallpaper during Keyguard exit but also when it's needed for a 150 // non-fullscreen show when locked activity. 151 mFindResults.setUseTopWallpaperAsTarget(true); 152 } 153 154 final boolean hasWallpaper = (w.mAttrs.flags & FLAG_SHOW_WALLPAPER) != 0; 155 if (hasWallpaper && w.isOnScreen() && (mWallpaperTarget == w || w.isDrawFinishedLw())) { 156 if (DEBUG_WALLPAPER) Slog.v(TAG, "Found wallpaper target: " + w); 157 mFindResults.setWallpaperTarget(w); 158 if (w == mWallpaperTarget && w.mWinAnimator.isAnimationSet()) { 159 // The current wallpaper target is animating, so we'll look behind it for 160 // another possible target and figure out what is going on later. 161 if (DEBUG_WALLPAPER) Slog.v(TAG, 162 "Win " + w + ": token animating, looking behind."); 163 } 164 // Found a target! End search. 165 return true; 166 } else if (w == winAnimator.mWindowDetachedWallpaper) { 167 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 168 "Found animating detached wallpaper target win: " + w); 169 mFindResults.setUseTopWallpaperAsTarget(true); 170 } 171 return false; 172 }; 173 174 public WallpaperController(WindowManagerService service) { 175 mService = service; 176 } 177 178 WindowState getWallpaperTarget() { 179 return mWallpaperTarget; 180 } 181 182 boolean isWallpaperTarget(WindowState win) { 183 return win == mWallpaperTarget; 184 } 185 186 boolean isBelowWallpaperTarget(WindowState win) { 187 return mWallpaperTarget != null && mWallpaperTarget.mLayer >= win.mBaseLayer; 188 } 189 190 boolean isWallpaperVisible() { 191 return isWallpaperVisible(mWallpaperTarget); 192 } 193 194 /** 195 * Starts {@param a} on all wallpaper windows. 196 */ 197 void startWallpaperAnimation(Animation a) { 198 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 199 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 200 token.startAnimation(a); 201 } 202 } 203 204 private boolean isWallpaperVisible(WindowState wallpaperTarget) { 205 if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper vis: target " + wallpaperTarget + ", obscured=" 206 + (wallpaperTarget != null ? Boolean.toString(wallpaperTarget.mObscured) : "??") 207 + " anim=" + ((wallpaperTarget != null && wallpaperTarget.mAppToken != null) 208 ? wallpaperTarget.mAppToken.mAppAnimator.animation : null) 209 + " prev=" + mPrevWallpaperTarget); 210 return (wallpaperTarget != null 211 && (!wallpaperTarget.mObscured || (wallpaperTarget.mAppToken != null 212 && wallpaperTarget.mAppToken.mAppAnimator.animation != null))) 213 || mPrevWallpaperTarget != null; 214 } 215 216 boolean isWallpaperTargetAnimating() { 217 return mWallpaperTarget != null && mWallpaperTarget.mWinAnimator.isAnimationSet() 218 && !mWallpaperTarget.mWinAnimator.isDummyAnimation(); 219 } 220 221 void updateWallpaperVisibility() { 222 final boolean visible = isWallpaperVisible(mWallpaperTarget); 223 224 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 225 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 226 token.updateWallpaperVisibility(visible); 227 } 228 } 229 230 void hideDeferredWallpapersIfNeeded() { 231 if (mDeferredHideWallpaper != null) { 232 hideWallpapers(mDeferredHideWallpaper); 233 mDeferredHideWallpaper = null; 234 } 235 } 236 237 void hideWallpapers(final WindowState winGoingAway) { 238 if (mWallpaperTarget != null 239 && (mWallpaperTarget != winGoingAway || mPrevWallpaperTarget != null)) { 240 return; 241 } 242 if (mService.mAppTransition.isRunning()) { 243 // Defer hiding the wallpaper when app transition is running until the animations 244 // are done. 245 mDeferredHideWallpaper = winGoingAway; 246 return; 247 } 248 249 final boolean wasDeferred = (mDeferredHideWallpaper == winGoingAway); 250 for (int i = mWallpaperTokens.size() - 1; i >= 0; i--) { 251 final WallpaperWindowToken token = mWallpaperTokens.get(i); 252 token.hideWallpaperToken(wasDeferred, "hideWallpapers"); 253 if (DEBUG_WALLPAPER_LIGHT && !token.hidden) Slog.d(TAG, "Hiding wallpaper " + token 254 + " from " + winGoingAway + " target=" + mWallpaperTarget + " prev=" 255 + mPrevWallpaperTarget + "\n" + Debug.getCallers(5, " ")); 256 } 257 } 258 259 boolean updateWallpaperOffset(WindowState wallpaperWin, int dw, int dh, boolean sync) { 260 boolean rawChanged = false; 261 // Set the default wallpaper x-offset to either edge of the screen (depending on RTL), to 262 // match the behavior of most Launchers 263 float defaultWallpaperX = wallpaperWin.isRtl() ? 1f : 0f; 264 float wpx = mLastWallpaperX >= 0 ? mLastWallpaperX : defaultWallpaperX; 265 float wpxs = mLastWallpaperXStep >= 0 ? mLastWallpaperXStep : -1.0f; 266 int availw = wallpaperWin.mFrame.right - wallpaperWin.mFrame.left - dw; 267 int offset = availw > 0 ? -(int)(availw * wpx + .5f) : 0; 268 if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 269 offset += mLastWallpaperDisplayOffsetX; 270 } 271 boolean changed = wallpaperWin.mXOffset != offset; 272 if (changed) { 273 if (DEBUG_WALLPAPER) Slog.v(TAG, "Update wallpaper " + wallpaperWin + " x: " + offset); 274 wallpaperWin.mXOffset = offset; 275 } 276 if (wallpaperWin.mWallpaperX != wpx || wallpaperWin.mWallpaperXStep != wpxs) { 277 wallpaperWin.mWallpaperX = wpx; 278 wallpaperWin.mWallpaperXStep = wpxs; 279 rawChanged = true; 280 } 281 282 float wpy = mLastWallpaperY >= 0 ? mLastWallpaperY : 0.5f; 283 float wpys = mLastWallpaperYStep >= 0 ? mLastWallpaperYStep : -1.0f; 284 int availh = wallpaperWin.mFrame.bottom - wallpaperWin.mFrame.top - dh; 285 offset = availh > 0 ? -(int)(availh * wpy + .5f) : 0; 286 if (mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 287 offset += mLastWallpaperDisplayOffsetY; 288 } 289 if (wallpaperWin.mYOffset != offset) { 290 if (DEBUG_WALLPAPER) Slog.v(TAG, "Update wallpaper " + wallpaperWin + " y: " + offset); 291 changed = true; 292 wallpaperWin.mYOffset = offset; 293 } 294 if (wallpaperWin.mWallpaperY != wpy || wallpaperWin.mWallpaperYStep != wpys) { 295 wallpaperWin.mWallpaperY = wpy; 296 wallpaperWin.mWallpaperYStep = wpys; 297 rawChanged = true; 298 } 299 300 if (rawChanged && (wallpaperWin.mAttrs.privateFlags & 301 WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS) != 0) { 302 try { 303 if (DEBUG_WALLPAPER) Slog.v(TAG, "Report new wp offset " 304 + wallpaperWin + " x=" + wallpaperWin.mWallpaperX 305 + " y=" + wallpaperWin.mWallpaperY); 306 if (sync) { 307 mWaitingOnWallpaper = wallpaperWin; 308 } 309 wallpaperWin.mClient.dispatchWallpaperOffsets( 310 wallpaperWin.mWallpaperX, wallpaperWin.mWallpaperY, 311 wallpaperWin.mWallpaperXStep, wallpaperWin.mWallpaperYStep, sync); 312 if (sync) { 313 if (mWaitingOnWallpaper != null) { 314 long start = SystemClock.uptimeMillis(); 315 if ((mLastWallpaperTimeoutTime + WALLPAPER_TIMEOUT_RECOVERY) 316 < start) { 317 try { 318 if (DEBUG_WALLPAPER) Slog.v(TAG, 319 "Waiting for offset complete..."); 320 mService.mWindowMap.wait(WALLPAPER_TIMEOUT); 321 } catch (InterruptedException e) { 322 } 323 if (DEBUG_WALLPAPER) Slog.v(TAG, "Offset complete!"); 324 if ((start + WALLPAPER_TIMEOUT) < SystemClock.uptimeMillis()) { 325 Slog.i(TAG, "Timeout waiting for wallpaper to offset: " 326 + wallpaperWin); 327 mLastWallpaperTimeoutTime = start; 328 } 329 } 330 mWaitingOnWallpaper = null; 331 } 332 } 333 } catch (RemoteException e) { 334 } 335 } 336 337 return changed; 338 } 339 340 void setWindowWallpaperPosition( 341 WindowState window, float x, float y, float xStep, float yStep) { 342 if (window.mWallpaperX != x || window.mWallpaperY != y) { 343 window.mWallpaperX = x; 344 window.mWallpaperY = y; 345 window.mWallpaperXStep = xStep; 346 window.mWallpaperYStep = yStep; 347 updateWallpaperOffsetLocked(window, true); 348 } 349 } 350 351 void setWindowWallpaperDisplayOffset(WindowState window, int x, int y) { 352 if (window.mWallpaperDisplayOffsetX != x || window.mWallpaperDisplayOffsetY != y) { 353 window.mWallpaperDisplayOffsetX = x; 354 window.mWallpaperDisplayOffsetY = y; 355 updateWallpaperOffsetLocked(window, true); 356 } 357 } 358 359 Bundle sendWindowWallpaperCommand( 360 WindowState window, String action, int x, int y, int z, Bundle extras, boolean sync) { 361 if (window == mWallpaperTarget || window == mPrevWallpaperTarget) { 362 boolean doWait = sync; 363 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 364 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 365 token.sendWindowWallpaperCommand(action, x, y, z, extras, sync); 366 } 367 368 if (doWait) { 369 // TODO: Need to wait for result. 370 } 371 } 372 373 return null; 374 } 375 376 private void updateWallpaperOffsetLocked(WindowState changingTarget, boolean sync) { 377 final DisplayContent displayContent = changingTarget.getDisplayContent(); 378 if (displayContent == null) { 379 return; 380 } 381 final DisplayInfo displayInfo = displayContent.getDisplayInfo(); 382 final int dw = displayInfo.logicalWidth; 383 final int dh = displayInfo.logicalHeight; 384 385 WindowState target = mWallpaperTarget; 386 if (target != null) { 387 if (target.mWallpaperX >= 0) { 388 mLastWallpaperX = target.mWallpaperX; 389 } else if (changingTarget.mWallpaperX >= 0) { 390 mLastWallpaperX = changingTarget.mWallpaperX; 391 } 392 if (target.mWallpaperY >= 0) { 393 mLastWallpaperY = target.mWallpaperY; 394 } else if (changingTarget.mWallpaperY >= 0) { 395 mLastWallpaperY = changingTarget.mWallpaperY; 396 } 397 if (target.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 398 mLastWallpaperDisplayOffsetX = target.mWallpaperDisplayOffsetX; 399 } else if (changingTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 400 mLastWallpaperDisplayOffsetX = changingTarget.mWallpaperDisplayOffsetX; 401 } 402 if (target.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 403 mLastWallpaperDisplayOffsetY = target.mWallpaperDisplayOffsetY; 404 } else if (changingTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 405 mLastWallpaperDisplayOffsetY = changingTarget.mWallpaperDisplayOffsetY; 406 } 407 if (target.mWallpaperXStep >= 0) { 408 mLastWallpaperXStep = target.mWallpaperXStep; 409 } else if (changingTarget.mWallpaperXStep >= 0) { 410 mLastWallpaperXStep = changingTarget.mWallpaperXStep; 411 } 412 if (target.mWallpaperYStep >= 0) { 413 mLastWallpaperYStep = target.mWallpaperYStep; 414 } else if (changingTarget.mWallpaperYStep >= 0) { 415 mLastWallpaperYStep = changingTarget.mWallpaperYStep; 416 } 417 } 418 419 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 420 mWallpaperTokens.get(curTokenNdx).updateWallpaperOffset(dw, dh, sync); 421 } 422 } 423 424 void clearLastWallpaperTimeoutTime() { 425 mLastWallpaperTimeoutTime = 0; 426 } 427 428 void wallpaperCommandComplete(IBinder window) { 429 if (mWaitingOnWallpaper != null && 430 mWaitingOnWallpaper.mClient.asBinder() == window) { 431 mWaitingOnWallpaper = null; 432 mService.mWindowMap.notifyAll(); 433 } 434 } 435 436 void wallpaperOffsetsComplete(IBinder window) { 437 if (mWaitingOnWallpaper != null && 438 mWaitingOnWallpaper.mClient.asBinder() == window) { 439 mWaitingOnWallpaper = null; 440 mService.mWindowMap.notifyAll(); 441 } 442 } 443 444 int getAnimLayerAdjustment() { 445 return mWallpaperAnimLayerAdjustment; 446 } 447 448 private void findWallpaperTarget(DisplayContent dc) { 449 mFindResults.reset(); 450 if (dc.isStackVisible(FREEFORM_WORKSPACE_STACK_ID)) { 451 // In freeform mode we set the wallpaper as its own target, so we don't need an 452 // additional window to make it visible. 453 mFindResults.setUseTopWallpaperAsTarget(true); 454 } 455 456 dc.forAllWindows(mFindWallpaperTargetFunction, true /* traverseTopToBottom */); 457 458 if (mFindResults.wallpaperTarget == null && mFindResults.useTopWallpaperAsTarget) { 459 mFindResults.setWallpaperTarget(mFindResults.topWallpaper); 460 } 461 } 462 463 private boolean isFullscreen(WindowManager.LayoutParams attrs) { 464 return attrs.x == 0 && attrs.y == 0 465 && attrs.width == MATCH_PARENT && attrs.height == MATCH_PARENT; 466 } 467 468 /** Updates the target wallpaper if needed and returns true if an update happened. */ 469 private void updateWallpaperWindowsTarget(DisplayContent dc, 470 FindWallpaperTargetResult result) { 471 472 WindowState wallpaperTarget = result.wallpaperTarget; 473 474 if (mWallpaperTarget == wallpaperTarget 475 || (mPrevWallpaperTarget != null && mPrevWallpaperTarget == wallpaperTarget)) { 476 477 if (mPrevWallpaperTarget == null) { 478 return; 479 } 480 481 // Is it time to stop animating? 482 if (!mPrevWallpaperTarget.isAnimatingLw()) { 483 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "No longer animating wallpaper targets!"); 484 mPrevWallpaperTarget = null; 485 mWallpaperTarget = wallpaperTarget; 486 } 487 return; 488 } 489 490 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 491 "New wallpaper target: " + wallpaperTarget + " prevTarget: " + mWallpaperTarget); 492 493 mPrevWallpaperTarget = null; 494 495 final WindowState prevWallpaperTarget = mWallpaperTarget; 496 mWallpaperTarget = wallpaperTarget; 497 498 if (wallpaperTarget == null || prevWallpaperTarget == null) { 499 return; 500 } 501 502 // Now what is happening... if the current and new targets are animating, 503 // then we are in our super special mode! 504 boolean oldAnim = prevWallpaperTarget.isAnimatingLw(); 505 boolean foundAnim = wallpaperTarget.isAnimatingLw(); 506 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 507 "New animation: " + foundAnim + " old animation: " + oldAnim); 508 509 if (!foundAnim || !oldAnim) { 510 return; 511 } 512 513 if (dc.getWindow(w -> w == prevWallpaperTarget) == null) { 514 return; 515 } 516 517 final boolean newTargetHidden = wallpaperTarget.mAppToken != null 518 && wallpaperTarget.mAppToken.hiddenRequested; 519 final boolean oldTargetHidden = prevWallpaperTarget.mAppToken != null 520 && prevWallpaperTarget.mAppToken.hiddenRequested; 521 522 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "Animating wallpapers:" + " old: " 523 + prevWallpaperTarget + " hidden=" + oldTargetHidden + " new: " + wallpaperTarget 524 + " hidden=" + newTargetHidden); 525 526 mPrevWallpaperTarget = prevWallpaperTarget; 527 528 if (newTargetHidden && !oldTargetHidden) { 529 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "Old wallpaper still the target."); 530 // Use the old target if new target is hidden but old target 531 // is not. If they're both hidden, still use the new target. 532 mWallpaperTarget = prevWallpaperTarget; 533 } else if (newTargetHidden == oldTargetHidden 534 && !mService.mOpeningApps.contains(wallpaperTarget.mAppToken) 535 && (mService.mOpeningApps.contains(prevWallpaperTarget.mAppToken) 536 || mService.mClosingApps.contains(prevWallpaperTarget.mAppToken))) { 537 // If they're both hidden (or both not hidden), prefer the one that's currently in 538 // opening or closing app list, this allows transition selection logic to better 539 // determine the wallpaper status of opening/closing apps. 540 mWallpaperTarget = prevWallpaperTarget; 541 } 542 543 result.setWallpaperTarget(wallpaperTarget); 544 } 545 546 private void updateWallpaperTokens(boolean visible) { 547 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 548 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 549 token.updateWallpaperWindows(visible, mWallpaperAnimLayerAdjustment); 550 token.getDisplayContent().assignWindowLayers(false); 551 } 552 } 553 554 void adjustWallpaperWindows(DisplayContent dc) { 555 mService.mRoot.mWallpaperMayChange = false; 556 557 // First find top-most window that has asked to be on top of the wallpaper; 558 // all wallpapers go behind it. 559 findWallpaperTarget(dc); 560 updateWallpaperWindowsTarget(dc, mFindResults); 561 562 // The window is visible to the compositor...but is it visible to the user? 563 // That is what the wallpaper cares about. 564 final boolean visible = mWallpaperTarget != null && isWallpaperVisible(mWallpaperTarget); 565 if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper visibility: " + visible); 566 567 if (visible) { 568 // If the wallpaper target is animating, we may need to copy its layer adjustment. 569 // Only do this if we are not transferring between two wallpaper targets. 570 mWallpaperAnimLayerAdjustment = 571 (mPrevWallpaperTarget == null && mWallpaperTarget.mAppToken != null) 572 ? mWallpaperTarget.mAppToken.getAnimLayerAdjustment() : 0; 573 574 if (mWallpaperTarget.mWallpaperX >= 0) { 575 mLastWallpaperX = mWallpaperTarget.mWallpaperX; 576 mLastWallpaperXStep = mWallpaperTarget.mWallpaperXStep; 577 } 578 if (mWallpaperTarget.mWallpaperY >= 0) { 579 mLastWallpaperY = mWallpaperTarget.mWallpaperY; 580 mLastWallpaperYStep = mWallpaperTarget.mWallpaperYStep; 581 } 582 if (mWallpaperTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 583 mLastWallpaperDisplayOffsetX = mWallpaperTarget.mWallpaperDisplayOffsetX; 584 } 585 if (mWallpaperTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 586 mLastWallpaperDisplayOffsetY = mWallpaperTarget.mWallpaperDisplayOffsetY; 587 } 588 } 589 590 updateWallpaperTokens(visible); 591 592 if (DEBUG_WALLPAPER_LIGHT) Slog.d(TAG, "New wallpaper: target=" + mWallpaperTarget 593 + " prev=" + mPrevWallpaperTarget); 594 } 595 596 boolean processWallpaperDrawPendingTimeout() { 597 if (mWallpaperDrawState == WALLPAPER_DRAW_PENDING) { 598 mWallpaperDrawState = WALLPAPER_DRAW_TIMEOUT; 599 if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, 600 "*** WALLPAPER DRAW TIMEOUT"); 601 return true; 602 } 603 return false; 604 } 605 606 boolean wallpaperTransitionReady() { 607 boolean transitionReady = true; 608 boolean wallpaperReady = true; 609 for (int curTokenIndex = mWallpaperTokens.size() - 1; 610 curTokenIndex >= 0 && wallpaperReady; curTokenIndex--) { 611 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenIndex); 612 if (token.hasVisibleNotDrawnWallpaper()) { 613 // We've told this wallpaper to be visible, but it is not drawn yet 614 wallpaperReady = false; 615 if (mWallpaperDrawState != WALLPAPER_DRAW_TIMEOUT) { 616 // wait for this wallpaper until it is drawn or timeout 617 transitionReady = false; 618 } 619 if (mWallpaperDrawState == WALLPAPER_DRAW_NORMAL) { 620 mWallpaperDrawState = WALLPAPER_DRAW_PENDING; 621 mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); 622 mService.mH.sendEmptyMessageDelayed(WALLPAPER_DRAW_PENDING_TIMEOUT, 623 WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION); 624 } 625 if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, 626 "Wallpaper should be visible but has not been drawn yet. " + 627 "mWallpaperDrawState=" + mWallpaperDrawState); 628 break; 629 } 630 } 631 if (wallpaperReady) { 632 mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; 633 mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); 634 } 635 636 return transitionReady; 637 } 638 639 /** 640 * Adjusts the wallpaper windows if the input display has a pending wallpaper layout or one of 641 * the opening apps should be a wallpaper target. 642 */ 643 void adjustWallpaperWindowsForAppTransitionIfNeeded(DisplayContent dc, 644 ArraySet<AppWindowToken> openingApps) { 645 boolean adjust = false; 646 if ((dc.pendingLayoutChanges & FINISH_LAYOUT_REDO_WALLPAPER) != 0) { 647 adjust = true; 648 } else { 649 for (int i = openingApps.size() - 1; i >= 0; --i) { 650 final AppWindowToken token = openingApps.valueAt(i); 651 if (token.windowsCanBeWallpaperTarget()) { 652 adjust = true; 653 break; 654 } 655 } 656 } 657 658 if (adjust) { 659 adjustWallpaperWindows(dc); 660 } 661 } 662 663 void addWallpaperToken(WallpaperWindowToken token) { 664 mWallpaperTokens.add(token); 665 } 666 667 void removeWallpaperToken(WallpaperWindowToken token) { 668 mWallpaperTokens.remove(token); 669 } 670 671 void dump(PrintWriter pw, String prefix) { 672 pw.print(prefix); pw.print("mWallpaperTarget="); pw.println(mWallpaperTarget); 673 if (mPrevWallpaperTarget != null) { 674 pw.print(prefix); pw.print("mPrevWallpaperTarget="); pw.println(mPrevWallpaperTarget); 675 } 676 pw.print(prefix); pw.print("mLastWallpaperX="); pw.print(mLastWallpaperX); 677 pw.print(" mLastWallpaperY="); pw.println(mLastWallpaperY); 678 if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE 679 || mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 680 pw.print(prefix); 681 pw.print("mLastWallpaperDisplayOffsetX="); pw.print(mLastWallpaperDisplayOffsetX); 682 pw.print(" mLastWallpaperDisplayOffsetY="); pw.println(mLastWallpaperDisplayOffsetY); 683 } 684 685 if (mWallpaperAnimLayerAdjustment != 0) { 686 pw.println(prefix + "mWallpaperAnimLayerAdjustment=" + mWallpaperAnimLayerAdjustment); 687 } 688 } 689 690 /** Helper class for storing the results of a wallpaper target find operation. */ 691 final private static class FindWallpaperTargetResult { 692 WindowState topWallpaper = null; 693 boolean useTopWallpaperAsTarget = false; 694 WindowState wallpaperTarget = null; 695 boolean resetTopWallpaper = false; 696 697 void setTopWallpaper(WindowState win) { 698 topWallpaper = win; 699 } 700 701 void setWallpaperTarget(WindowState win) { 702 wallpaperTarget = win; 703 } 704 705 void setUseTopWallpaperAsTarget(boolean topWallpaperAsTarget) { 706 useTopWallpaperAsTarget = topWallpaperAsTarget; 707 } 708 709 void reset() { 710 topWallpaper = null; 711 wallpaperTarget = null; 712 useTopWallpaperAsTarget = false; 713 resetTopWallpaper = false; 714 } 715 } 716 } 717
