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.WindowConfiguration.WINDOWING_MODE_FREEFORM; 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 27 import static com.android.server.policy.WindowManagerPolicy.FINISH_LAYOUT_REDO_WALLPAPER; 28 import static android.view.WindowManager.TRANSIT_FLAG_KEYGUARD_GOING_AWAY_WITH_WALLPAPER; 29 import static com.android.server.wm.RecentsAnimationController.REORDER_MOVE_TO_ORIGINAL_POSITION; 30 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_APP_TRANSITIONS; 31 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_SCREENSHOT; 32 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER; 33 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER_LIGHT; 34 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME; 35 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; 36 import static com.android.server.wm.WindowManagerService.H.WALLPAPER_DRAW_PENDING_TIMEOUT; 37 38 import android.graphics.Bitmap; 39 import android.graphics.GraphicBuffer; 40 import android.graphics.Rect; 41 import android.os.Bundle; 42 import android.os.Debug; 43 import android.os.IBinder; 44 import android.os.RemoteException; 45 import android.os.SystemClock; 46 import android.util.ArraySet; 47 import android.util.Slog; 48 import android.view.DisplayInfo; 49 import android.view.SurfaceControl; 50 import android.view.WindowManager; 51 import android.view.animation.Animation; 52 53 import java.io.PrintWriter; 54 import java.util.ArrayList; 55 56 /** 57 * Controls wallpaper windows visibility, ordering, and so on. 58 * NOTE: All methods in this class must be called with the window manager service lock held. 59 */ 60 class WallpaperController { 61 private static final String TAG = TAG_WITH_CLASS_NAME ? "WallpaperController" : TAG_WM; 62 private WindowManagerService mService; 63 64 private final ArrayList<WallpaperWindowToken> mWallpaperTokens = new ArrayList<>(); 65 66 // If non-null, this is the currently visible window that is associated 67 // with the wallpaper. 68 private WindowState mWallpaperTarget = null; 69 // If non-null, we are in the middle of animating from one wallpaper target 70 // to another, and this is the previous wallpaper target. 71 private WindowState mPrevWallpaperTarget = null; 72 73 private float mLastWallpaperX = -1; 74 private float mLastWallpaperY = -1; 75 private float mLastWallpaperXStep = -1; 76 private float mLastWallpaperYStep = -1; 77 private int mLastWallpaperDisplayOffsetX = Integer.MIN_VALUE; 78 private int mLastWallpaperDisplayOffsetY = Integer.MIN_VALUE; 79 80 // This is set when we are waiting for a wallpaper to tell us it is done 81 // changing its scroll position. 82 private WindowState mWaitingOnWallpaper; 83 84 // The last time we had a timeout when waiting for a wallpaper. 85 private long mLastWallpaperTimeoutTime; 86 // We give a wallpaper up to 150ms to finish scrolling. 87 private static final long WALLPAPER_TIMEOUT = 150; 88 // Time we wait after a timeout before trying to wait again. 89 private static final long WALLPAPER_TIMEOUT_RECOVERY = 10000; 90 91 // Set to the wallpaper window we would like to hide once the transition animations are done. 92 // This is useful in cases where we don't want the wallpaper to be hidden when the close app 93 // is a wallpaper target and is done animating out, but the opening app isn't a wallpaper 94 // target and isn't done animating in. 95 WindowState mDeferredHideWallpaper = null; 96 97 // We give a wallpaper up to 500ms to finish drawing before playing app transitions. 98 private static final long WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION = 500; 99 private static final int WALLPAPER_DRAW_NORMAL = 0; 100 private static final int WALLPAPER_DRAW_PENDING = 1; 101 private static final int WALLPAPER_DRAW_TIMEOUT = 2; 102 private int mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; 103 104 /** 105 * Temporary storage for taking a screenshot of the wallpaper. 106 * @see #screenshotWallpaperLocked() 107 */ 108 private WindowState mTmpTopWallpaper; 109 110 private final FindWallpaperTargetResult mFindResults = new FindWallpaperTargetResult(); 111 112 private final ToBooleanFunction<WindowState> mFindWallpaperTargetFunction = w -> { 113 final WindowAnimator winAnimator = mService.mAnimator; 114 if ((w.mAttrs.type == TYPE_WALLPAPER)) { 115 if (mFindResults.topWallpaper == null || mFindResults.resetTopWallpaper) { 116 mFindResults.setTopWallpaper(w); 117 mFindResults.resetTopWallpaper = false; 118 } 119 return false; 120 } 121 122 mFindResults.resetTopWallpaper = true; 123 if (w != winAnimator.mWindowDetachedWallpaper && w.mAppToken != null) { 124 // If this window's app token is hidden and not animating, it is of no interest to us. 125 if (w.mAppToken.isHidden() && !w.mAppToken.isSelfAnimating()) { 126 if (DEBUG_WALLPAPER) Slog.v(TAG, 127 "Skipping hidden and not animating token: " + w); 128 return false; 129 } 130 } 131 if (DEBUG_WALLPAPER) Slog.v(TAG, "Win " + w + ": isOnScreen=" + w.isOnScreen() 132 + " mDrawState=" + w.mWinAnimator.mDrawState); 133 134 if (w.mWillReplaceWindow && mWallpaperTarget == null 135 && !mFindResults.useTopWallpaperAsTarget) { 136 // When we are replacing a window and there was wallpaper before replacement, we want to 137 // keep the window until the new windows fully appear and can determine the visibility, 138 // to avoid flickering. 139 mFindResults.setUseTopWallpaperAsTarget(true); 140 } 141 142 final boolean keyguardGoingAwayWithWallpaper = (w.mAppToken != null 143 && w.mAppToken.isSelfAnimating() 144 && AppTransition.isKeyguardGoingAwayTransit(w.mAppToken.getTransit()) 145 && (w.mAppToken.getTransitFlags() 146 & TRANSIT_FLAG_KEYGUARD_GOING_AWAY_WITH_WALLPAPER) != 0); 147 148 boolean needsShowWhenLockedWallpaper = false; 149 if ((w.mAttrs.flags & FLAG_SHOW_WHEN_LOCKED) != 0 150 && mService.mPolicy.isKeyguardLocked() 151 && mService.mPolicy.isKeyguardOccluded()) { 152 // The lowest show when locked window decides whether we need to put the wallpaper 153 // behind. 154 needsShowWhenLockedWallpaper = !isFullscreen(w.mAttrs) 155 || (w.mAppToken != null && !w.mAppToken.fillsParent()); 156 } 157 158 if (keyguardGoingAwayWithWallpaper || needsShowWhenLockedWallpaper) { 159 // Keep the wallpaper during Keyguard exit but also when it's needed for a 160 // non-fullscreen show when locked activity. 161 mFindResults.setUseTopWallpaperAsTarget(true); 162 } 163 164 final RecentsAnimationController recentsAnimationController = 165 mService.getRecentsAnimationController(); 166 final boolean animationWallpaper = w.mAppToken != null && w.mAppToken.getAnimation() != null 167 && w.mAppToken.getAnimation().getShowWallpaper(); 168 final boolean hasWallpaper = (w.mAttrs.flags & FLAG_SHOW_WALLPAPER) != 0 169 || animationWallpaper; 170 final boolean isRecentsTransitionTarget = (recentsAnimationController != null 171 && recentsAnimationController.isWallpaperVisible(w)); 172 if (isRecentsTransitionTarget) { 173 if (DEBUG_WALLPAPER) Slog.v(TAG, "Found recents animation wallpaper target: " + w); 174 mFindResults.setWallpaperTarget(w); 175 return true; 176 } else if (hasWallpaper && w.isOnScreen() 177 && (mWallpaperTarget == w || w.isDrawFinishedLw())) { 178 if (DEBUG_WALLPAPER) Slog.v(TAG, "Found wallpaper target: " + w); 179 mFindResults.setWallpaperTarget(w); 180 if (w == mWallpaperTarget && w.mWinAnimator.isAnimationSet()) { 181 // The current wallpaper target is animating, so we'll look behind it for 182 // another possible target and figure out what is going on later. 183 if (DEBUG_WALLPAPER) Slog.v(TAG, 184 "Win " + w + ": token animating, looking behind."); 185 } 186 // Found a target! End search. 187 return true; 188 } else if (w == winAnimator.mWindowDetachedWallpaper) { 189 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 190 "Found animating detached wallpaper target win: " + w); 191 mFindResults.setUseTopWallpaperAsTarget(true); 192 } 193 return false; 194 }; 195 196 public WallpaperController(WindowManagerService service) { 197 mService = service; 198 } 199 200 WindowState getWallpaperTarget() { 201 return mWallpaperTarget; 202 } 203 204 boolean isWallpaperTarget(WindowState win) { 205 return win == mWallpaperTarget; 206 } 207 208 boolean isBelowWallpaperTarget(WindowState win) { 209 return mWallpaperTarget != null && mWallpaperTarget.mLayer >= win.mBaseLayer; 210 } 211 212 boolean isWallpaperVisible() { 213 return isWallpaperVisible(mWallpaperTarget); 214 } 215 216 /** 217 * Starts {@param a} on all wallpaper windows. 218 */ 219 void startWallpaperAnimation(Animation a) { 220 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 221 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 222 token.startAnimation(a); 223 } 224 } 225 226 private final boolean isWallpaperVisible(WindowState wallpaperTarget) { 227 final RecentsAnimationController recentsAnimationController = 228 mService.getRecentsAnimationController(); 229 boolean isAnimatingWithRecentsComponent = recentsAnimationController != null 230 && recentsAnimationController.isWallpaperVisible(wallpaperTarget); 231 if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper vis: target " + wallpaperTarget + ", obscured=" 232 + (wallpaperTarget != null ? Boolean.toString(wallpaperTarget.mObscured) : "??") 233 + " animating=" + ((wallpaperTarget != null && wallpaperTarget.mAppToken != null) 234 ? wallpaperTarget.mAppToken.isSelfAnimating() : null) 235 + " prev=" + mPrevWallpaperTarget 236 + " recentsAnimationWallpaperVisible=" + isAnimatingWithRecentsComponent); 237 return (wallpaperTarget != null 238 && (!wallpaperTarget.mObscured 239 || isAnimatingWithRecentsComponent 240 || (wallpaperTarget.mAppToken != null 241 && wallpaperTarget.mAppToken.isSelfAnimating()))) 242 || mPrevWallpaperTarget != null; 243 } 244 245 boolean isWallpaperTargetAnimating() { 246 return mWallpaperTarget != null && mWallpaperTarget.mWinAnimator.isAnimationSet() 247 && (mWallpaperTarget.mAppToken == null 248 || !mWallpaperTarget.mAppToken.isWaitingForTransitionStart()); 249 } 250 251 void updateWallpaperVisibility() { 252 final boolean visible = isWallpaperVisible(mWallpaperTarget); 253 254 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 255 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 256 token.updateWallpaperVisibility(visible); 257 } 258 } 259 260 void hideDeferredWallpapersIfNeeded() { 261 if (mDeferredHideWallpaper != null) { 262 hideWallpapers(mDeferredHideWallpaper); 263 mDeferredHideWallpaper = null; 264 } 265 } 266 267 void hideWallpapers(final WindowState winGoingAway) { 268 if (mWallpaperTarget != null 269 && (mWallpaperTarget != winGoingAway || mPrevWallpaperTarget != null)) { 270 return; 271 } 272 if (mService.mAppTransition.isRunning()) { 273 // Defer hiding the wallpaper when app transition is running until the animations 274 // are done. 275 mDeferredHideWallpaper = winGoingAway; 276 return; 277 } 278 279 final boolean wasDeferred = (mDeferredHideWallpaper == winGoingAway); 280 for (int i = mWallpaperTokens.size() - 1; i >= 0; i--) { 281 final WallpaperWindowToken token = mWallpaperTokens.get(i); 282 token.hideWallpaperToken(wasDeferred, "hideWallpapers"); 283 if (DEBUG_WALLPAPER_LIGHT && !token.isHidden()) Slog.d(TAG, "Hiding wallpaper " + token 284 + " from " + winGoingAway + " target=" + mWallpaperTarget + " prev=" 285 + mPrevWallpaperTarget + "\n" + Debug.getCallers(5, " ")); 286 } 287 } 288 289 boolean updateWallpaperOffset(WindowState wallpaperWin, int dw, int dh, boolean sync) { 290 int xOffset = 0; 291 int yOffset = 0; 292 boolean rawChanged = false; 293 // Set the default wallpaper x-offset to either edge of the screen (depending on RTL), to 294 // match the behavior of most Launchers 295 float defaultWallpaperX = wallpaperWin.isRtl() ? 1f : 0f; 296 float wpx = mLastWallpaperX >= 0 ? mLastWallpaperX : defaultWallpaperX; 297 float wpxs = mLastWallpaperXStep >= 0 ? mLastWallpaperXStep : -1.0f; 298 int availw = wallpaperWin.mFrame.right - wallpaperWin.mFrame.left - dw; 299 int offset = availw > 0 ? -(int)(availw * wpx + .5f) : 0; 300 if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 301 offset += mLastWallpaperDisplayOffsetX; 302 } 303 xOffset = offset; 304 305 if (wallpaperWin.mWallpaperX != wpx || wallpaperWin.mWallpaperXStep != wpxs) { 306 wallpaperWin.mWallpaperX = wpx; 307 wallpaperWin.mWallpaperXStep = wpxs; 308 rawChanged = true; 309 } 310 311 float wpy = mLastWallpaperY >= 0 ? mLastWallpaperY : 0.5f; 312 float wpys = mLastWallpaperYStep >= 0 ? mLastWallpaperYStep : -1.0f; 313 int availh = wallpaperWin.mFrame.bottom - wallpaperWin.mFrame.top - dh; 314 offset = availh > 0 ? -(int)(availh * wpy + .5f) : 0; 315 if (mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 316 offset += mLastWallpaperDisplayOffsetY; 317 } 318 yOffset = offset; 319 320 if (wallpaperWin.mWallpaperY != wpy || wallpaperWin.mWallpaperYStep != wpys) { 321 wallpaperWin.mWallpaperY = wpy; 322 wallpaperWin.mWallpaperYStep = wpys; 323 rawChanged = true; 324 } 325 326 boolean changed = wallpaperWin.mWinAnimator.setWallpaperOffset(xOffset, yOffset); 327 328 if (rawChanged && (wallpaperWin.mAttrs.privateFlags & 329 WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS) != 0) { 330 try { 331 if (DEBUG_WALLPAPER) Slog.v(TAG, "Report new wp offset " 332 + wallpaperWin + " x=" + wallpaperWin.mWallpaperX 333 + " y=" + wallpaperWin.mWallpaperY); 334 if (sync) { 335 mWaitingOnWallpaper = wallpaperWin; 336 } 337 wallpaperWin.mClient.dispatchWallpaperOffsets( 338 wallpaperWin.mWallpaperX, wallpaperWin.mWallpaperY, 339 wallpaperWin.mWallpaperXStep, wallpaperWin.mWallpaperYStep, sync); 340 if (sync) { 341 if (mWaitingOnWallpaper != null) { 342 long start = SystemClock.uptimeMillis(); 343 if ((mLastWallpaperTimeoutTime + WALLPAPER_TIMEOUT_RECOVERY) 344 < start) { 345 try { 346 if (DEBUG_WALLPAPER) Slog.v(TAG, 347 "Waiting for offset complete..."); 348 mService.mWindowMap.wait(WALLPAPER_TIMEOUT); 349 } catch (InterruptedException e) { 350 } 351 if (DEBUG_WALLPAPER) Slog.v(TAG, "Offset complete!"); 352 if ((start + WALLPAPER_TIMEOUT) < SystemClock.uptimeMillis()) { 353 Slog.i(TAG, "Timeout waiting for wallpaper to offset: " 354 + wallpaperWin); 355 mLastWallpaperTimeoutTime = start; 356 } 357 } 358 mWaitingOnWallpaper = null; 359 } 360 } 361 } catch (RemoteException e) { 362 } 363 } 364 365 return changed; 366 } 367 368 void setWindowWallpaperPosition( 369 WindowState window, float x, float y, float xStep, float yStep) { 370 if (window.mWallpaperX != x || window.mWallpaperY != y) { 371 window.mWallpaperX = x; 372 window.mWallpaperY = y; 373 window.mWallpaperXStep = xStep; 374 window.mWallpaperYStep = yStep; 375 updateWallpaperOffsetLocked(window, true); 376 } 377 } 378 379 void setWindowWallpaperDisplayOffset(WindowState window, int x, int y) { 380 if (window.mWallpaperDisplayOffsetX != x || window.mWallpaperDisplayOffsetY != y) { 381 window.mWallpaperDisplayOffsetX = x; 382 window.mWallpaperDisplayOffsetY = y; 383 updateWallpaperOffsetLocked(window, true); 384 } 385 } 386 387 Bundle sendWindowWallpaperCommand( 388 WindowState window, String action, int x, int y, int z, Bundle extras, boolean sync) { 389 if (window == mWallpaperTarget || window == mPrevWallpaperTarget) { 390 boolean doWait = sync; 391 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 392 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 393 token.sendWindowWallpaperCommand(action, x, y, z, extras, sync); 394 } 395 396 if (doWait) { 397 // TODO: Need to wait for result. 398 } 399 } 400 401 return null; 402 } 403 404 private void updateWallpaperOffsetLocked(WindowState changingTarget, boolean sync) { 405 final DisplayContent displayContent = changingTarget.getDisplayContent(); 406 if (displayContent == null) { 407 return; 408 } 409 final DisplayInfo displayInfo = displayContent.getDisplayInfo(); 410 final int dw = displayInfo.logicalWidth; 411 final int dh = displayInfo.logicalHeight; 412 413 WindowState target = mWallpaperTarget; 414 if (target != null) { 415 if (target.mWallpaperX >= 0) { 416 mLastWallpaperX = target.mWallpaperX; 417 } else if (changingTarget.mWallpaperX >= 0) { 418 mLastWallpaperX = changingTarget.mWallpaperX; 419 } 420 if (target.mWallpaperY >= 0) { 421 mLastWallpaperY = target.mWallpaperY; 422 } else if (changingTarget.mWallpaperY >= 0) { 423 mLastWallpaperY = changingTarget.mWallpaperY; 424 } 425 if (target.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 426 mLastWallpaperDisplayOffsetX = target.mWallpaperDisplayOffsetX; 427 } else if (changingTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 428 mLastWallpaperDisplayOffsetX = changingTarget.mWallpaperDisplayOffsetX; 429 } 430 if (target.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 431 mLastWallpaperDisplayOffsetY = target.mWallpaperDisplayOffsetY; 432 } else if (changingTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 433 mLastWallpaperDisplayOffsetY = changingTarget.mWallpaperDisplayOffsetY; 434 } 435 if (target.mWallpaperXStep >= 0) { 436 mLastWallpaperXStep = target.mWallpaperXStep; 437 } else if (changingTarget.mWallpaperXStep >= 0) { 438 mLastWallpaperXStep = changingTarget.mWallpaperXStep; 439 } 440 if (target.mWallpaperYStep >= 0) { 441 mLastWallpaperYStep = target.mWallpaperYStep; 442 } else if (changingTarget.mWallpaperYStep >= 0) { 443 mLastWallpaperYStep = changingTarget.mWallpaperYStep; 444 } 445 } 446 447 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 448 mWallpaperTokens.get(curTokenNdx).updateWallpaperOffset(dw, dh, sync); 449 } 450 } 451 452 void clearLastWallpaperTimeoutTime() { 453 mLastWallpaperTimeoutTime = 0; 454 } 455 456 void wallpaperCommandComplete(IBinder window) { 457 if (mWaitingOnWallpaper != null && 458 mWaitingOnWallpaper.mClient.asBinder() == window) { 459 mWaitingOnWallpaper = null; 460 mService.mWindowMap.notifyAll(); 461 } 462 } 463 464 void wallpaperOffsetsComplete(IBinder window) { 465 if (mWaitingOnWallpaper != null && 466 mWaitingOnWallpaper.mClient.asBinder() == window) { 467 mWaitingOnWallpaper = null; 468 mService.mWindowMap.notifyAll(); 469 } 470 } 471 472 private void findWallpaperTarget(DisplayContent dc) { 473 mFindResults.reset(); 474 if (dc.isStackVisible(WINDOWING_MODE_FREEFORM)) { 475 // In freeform mode we set the wallpaper as its own target, so we don't need an 476 // additional window to make it visible. 477 mFindResults.setUseTopWallpaperAsTarget(true); 478 } 479 480 dc.forAllWindows(mFindWallpaperTargetFunction, true /* traverseTopToBottom */); 481 482 if (mFindResults.wallpaperTarget == null && mFindResults.useTopWallpaperAsTarget) { 483 mFindResults.setWallpaperTarget(mFindResults.topWallpaper); 484 } 485 } 486 487 private boolean isFullscreen(WindowManager.LayoutParams attrs) { 488 return attrs.x == 0 && attrs.y == 0 489 && attrs.width == MATCH_PARENT && attrs.height == MATCH_PARENT; 490 } 491 492 /** Updates the target wallpaper if needed and returns true if an update happened. */ 493 private void updateWallpaperWindowsTarget(DisplayContent dc, 494 FindWallpaperTargetResult result) { 495 496 WindowState wallpaperTarget = result.wallpaperTarget; 497 498 if (mWallpaperTarget == wallpaperTarget 499 || (mPrevWallpaperTarget != null && mPrevWallpaperTarget == wallpaperTarget)) { 500 501 if (mPrevWallpaperTarget == null) { 502 return; 503 } 504 505 // Is it time to stop animating? 506 if (!mPrevWallpaperTarget.isAnimatingLw()) { 507 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "No longer animating wallpaper targets!"); 508 mPrevWallpaperTarget = null; 509 mWallpaperTarget = wallpaperTarget; 510 } 511 return; 512 } 513 514 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 515 "New wallpaper target: " + wallpaperTarget + " prevTarget: " + mWallpaperTarget); 516 517 mPrevWallpaperTarget = null; 518 519 final WindowState prevWallpaperTarget = mWallpaperTarget; 520 mWallpaperTarget = wallpaperTarget; 521 522 if (wallpaperTarget == null || prevWallpaperTarget == null) { 523 return; 524 } 525 526 // Now what is happening... if the current and new targets are animating, 527 // then we are in our super special mode! 528 boolean oldAnim = prevWallpaperTarget.isAnimatingLw(); 529 boolean foundAnim = wallpaperTarget.isAnimatingLw(); 530 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, 531 "New animation: " + foundAnim + " old animation: " + oldAnim); 532 533 if (!foundAnim || !oldAnim) { 534 return; 535 } 536 537 if (dc.getWindow(w -> w == prevWallpaperTarget) == null) { 538 return; 539 } 540 541 final boolean newTargetHidden = wallpaperTarget.mAppToken != null 542 && wallpaperTarget.mAppToken.hiddenRequested; 543 final boolean oldTargetHidden = prevWallpaperTarget.mAppToken != null 544 && prevWallpaperTarget.mAppToken.hiddenRequested; 545 546 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "Animating wallpapers:" + " old: " 547 + prevWallpaperTarget + " hidden=" + oldTargetHidden + " new: " + wallpaperTarget 548 + " hidden=" + newTargetHidden); 549 550 mPrevWallpaperTarget = prevWallpaperTarget; 551 552 if (newTargetHidden && !oldTargetHidden) { 553 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "Old wallpaper still the target."); 554 // Use the old target if new target is hidden but old target 555 // is not. If they're both hidden, still use the new target. 556 mWallpaperTarget = prevWallpaperTarget; 557 } else if (newTargetHidden == oldTargetHidden 558 && !mService.mOpeningApps.contains(wallpaperTarget.mAppToken) 559 && (mService.mOpeningApps.contains(prevWallpaperTarget.mAppToken) 560 || mService.mClosingApps.contains(prevWallpaperTarget.mAppToken))) { 561 // If they're both hidden (or both not hidden), prefer the one that's currently in 562 // opening or closing app list, this allows transition selection logic to better 563 // determine the wallpaper status of opening/closing apps. 564 mWallpaperTarget = prevWallpaperTarget; 565 } 566 567 result.setWallpaperTarget(wallpaperTarget); 568 } 569 570 private void updateWallpaperTokens(boolean visible) { 571 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 572 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 573 token.updateWallpaperWindows(visible); 574 token.getDisplayContent().assignWindowLayers(false); 575 } 576 } 577 578 void adjustWallpaperWindows(DisplayContent dc) { 579 mService.mRoot.mWallpaperMayChange = false; 580 581 // First find top-most window that has asked to be on top of the wallpaper; 582 // all wallpapers go behind it. 583 findWallpaperTarget(dc); 584 updateWallpaperWindowsTarget(dc, mFindResults); 585 586 // The window is visible to the compositor...but is it visible to the user? 587 // That is what the wallpaper cares about. 588 final boolean visible = mWallpaperTarget != null && isWallpaperVisible(mWallpaperTarget); 589 if (DEBUG_WALLPAPER) Slog.v(TAG, "Wallpaper visibility: " + visible); 590 591 if (visible) { 592 if (mWallpaperTarget.mWallpaperX >= 0) { 593 mLastWallpaperX = mWallpaperTarget.mWallpaperX; 594 mLastWallpaperXStep = mWallpaperTarget.mWallpaperXStep; 595 } 596 if (mWallpaperTarget.mWallpaperY >= 0) { 597 mLastWallpaperY = mWallpaperTarget.mWallpaperY; 598 mLastWallpaperYStep = mWallpaperTarget.mWallpaperYStep; 599 } 600 if (mWallpaperTarget.mWallpaperDisplayOffsetX != Integer.MIN_VALUE) { 601 mLastWallpaperDisplayOffsetX = mWallpaperTarget.mWallpaperDisplayOffsetX; 602 } 603 if (mWallpaperTarget.mWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 604 mLastWallpaperDisplayOffsetY = mWallpaperTarget.mWallpaperDisplayOffsetY; 605 } 606 } 607 608 updateWallpaperTokens(visible); 609 610 if (DEBUG_WALLPAPER_LIGHT) Slog.d(TAG, "New wallpaper: target=" + mWallpaperTarget 611 + " prev=" + mPrevWallpaperTarget); 612 } 613 614 boolean processWallpaperDrawPendingTimeout() { 615 if (mWallpaperDrawState == WALLPAPER_DRAW_PENDING) { 616 mWallpaperDrawState = WALLPAPER_DRAW_TIMEOUT; 617 if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, 618 "*** WALLPAPER DRAW TIMEOUT"); 619 620 // If there was a recents animation in progress, cancel that animation 621 if (mService.getRecentsAnimationController() != null) { 622 mService.getRecentsAnimationController().cancelAnimation( 623 REORDER_MOVE_TO_ORIGINAL_POSITION, "wallpaperDrawPendingTimeout"); 624 } 625 return true; 626 } 627 return false; 628 } 629 630 boolean wallpaperTransitionReady() { 631 boolean transitionReady = true; 632 boolean wallpaperReady = true; 633 for (int curTokenIndex = mWallpaperTokens.size() - 1; 634 curTokenIndex >= 0 && wallpaperReady; curTokenIndex--) { 635 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenIndex); 636 if (token.hasVisibleNotDrawnWallpaper()) { 637 // We've told this wallpaper to be visible, but it is not drawn yet 638 wallpaperReady = false; 639 if (mWallpaperDrawState != WALLPAPER_DRAW_TIMEOUT) { 640 // wait for this wallpaper until it is drawn or timeout 641 transitionReady = false; 642 } 643 if (mWallpaperDrawState == WALLPAPER_DRAW_NORMAL) { 644 mWallpaperDrawState = WALLPAPER_DRAW_PENDING; 645 mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); 646 mService.mH.sendEmptyMessageDelayed(WALLPAPER_DRAW_PENDING_TIMEOUT, 647 WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION); 648 } 649 if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG, 650 "Wallpaper should be visible but has not been drawn yet. " + 651 "mWallpaperDrawState=" + mWallpaperDrawState); 652 break; 653 } 654 } 655 if (wallpaperReady) { 656 mWallpaperDrawState = WALLPAPER_DRAW_NORMAL; 657 mService.mH.removeMessages(WALLPAPER_DRAW_PENDING_TIMEOUT); 658 } 659 660 return transitionReady; 661 } 662 663 /** 664 * Adjusts the wallpaper windows if the input display has a pending wallpaper layout or one of 665 * the opening apps should be a wallpaper target. 666 */ 667 void adjustWallpaperWindowsForAppTransitionIfNeeded(DisplayContent dc, 668 ArraySet<AppWindowToken> openingApps) { 669 boolean adjust = false; 670 if ((dc.pendingLayoutChanges & FINISH_LAYOUT_REDO_WALLPAPER) != 0) { 671 adjust = true; 672 } else { 673 for (int i = openingApps.size() - 1; i >= 0; --i) { 674 final AppWindowToken token = openingApps.valueAt(i); 675 if (token.windowsCanBeWallpaperTarget()) { 676 adjust = true; 677 break; 678 } 679 } 680 } 681 682 if (adjust) { 683 adjustWallpaperWindows(dc); 684 } 685 } 686 687 void addWallpaperToken(WallpaperWindowToken token) { 688 mWallpaperTokens.add(token); 689 } 690 691 void removeWallpaperToken(WallpaperWindowToken token) { 692 mWallpaperTokens.remove(token); 693 } 694 695 /** 696 * Take a screenshot of the wallpaper if it's visible. 697 * 698 * @return Bitmap of the wallpaper 699 */ 700 Bitmap screenshotWallpaperLocked() { 701 if (!mService.mPolicy.isScreenOn()) { 702 if (DEBUG_SCREENSHOT) { 703 Slog.i(TAG_WM, "Attempted to take screenshot while display was off."); 704 } 705 return null; 706 } 707 708 final WindowState wallpaperWindowState = getTopVisibleWallpaper(); 709 if (wallpaperWindowState == null) { 710 if (DEBUG_SCREENSHOT) { 711 Slog.i(TAG_WM, "No visible wallpaper to screenshot"); 712 } 713 return null; 714 } 715 716 final Rect bounds = wallpaperWindowState.getBounds(); 717 bounds.offsetTo(0, 0); 718 719 GraphicBuffer wallpaperBuffer = SurfaceControl.captureLayers( 720 wallpaperWindowState.getSurfaceControl().getHandle(), bounds, 1 /* frameScale */); 721 722 if (wallpaperBuffer == null) { 723 Slog.w(TAG_WM, "Failed to screenshot wallpaper"); 724 return null; 725 } 726 return Bitmap.createHardwareBitmap(wallpaperBuffer); 727 } 728 729 private WindowState getTopVisibleWallpaper() { 730 mTmpTopWallpaper = null; 731 732 for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) { 733 final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx); 734 token.forAllWindows(w -> { 735 final WindowStateAnimator winAnim = w.mWinAnimator; 736 if (winAnim != null && winAnim.getShown() && winAnim.mLastAlpha > 0f) { 737 mTmpTopWallpaper = w; 738 return true; 739 } 740 return false; 741 }, true /* traverseTopToBottom */); 742 } 743 744 return mTmpTopWallpaper; 745 } 746 747 void dump(PrintWriter pw, String prefix) { 748 pw.print(prefix); pw.print("mWallpaperTarget="); pw.println(mWallpaperTarget); 749 if (mPrevWallpaperTarget != null) { 750 pw.print(prefix); pw.print("mPrevWallpaperTarget="); pw.println(mPrevWallpaperTarget); 751 } 752 pw.print(prefix); pw.print("mLastWallpaperX="); pw.print(mLastWallpaperX); 753 pw.print(" mLastWallpaperY="); pw.println(mLastWallpaperY); 754 if (mLastWallpaperDisplayOffsetX != Integer.MIN_VALUE 755 || mLastWallpaperDisplayOffsetY != Integer.MIN_VALUE) { 756 pw.print(prefix); 757 pw.print("mLastWallpaperDisplayOffsetX="); pw.print(mLastWallpaperDisplayOffsetX); 758 pw.print(" mLastWallpaperDisplayOffsetY="); pw.println(mLastWallpaperDisplayOffsetY); 759 } 760 } 761 762 /** Helper class for storing the results of a wallpaper target find operation. */ 763 final private static class FindWallpaperTargetResult { 764 WindowState topWallpaper = null; 765 boolean useTopWallpaperAsTarget = false; 766 WindowState wallpaperTarget = null; 767 boolean resetTopWallpaper = false; 768 769 void setTopWallpaper(WindowState win) { 770 topWallpaper = win; 771 } 772 773 void setWallpaperTarget(WindowState win) { 774 wallpaperTarget = win; 775 } 776 777 void setUseTopWallpaperAsTarget(boolean topWallpaperAsTarget) { 778 useTopWallpaperAsTarget = topWallpaperAsTarget; 779 } 780 781 void reset() { 782 topWallpaper = null; 783 wallpaperTarget = null; 784 useTopWallpaperAsTarget = false; 785 resetTopWallpaper = false; 786 } 787 } 788 } 789
