TaskStack.java revision 6dfdfd6741c5a3dd8d8a49ddbd6ee5dfe2fd292d
1/* 2 * Copyright (C) 2013 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 com.android.server.wm.WindowManagerService.DEBUG_TASK_MOVEMENT; 20import static com.android.server.wm.WindowManagerService.TAG; 21 22import android.content.res.Configuration; 23import android.graphics.Rect; 24import android.os.Debug; 25import android.util.DisplayMetrics; 26import android.util.EventLog; 27import android.util.Slog; 28import android.util.TypedValue; 29import android.view.Surface; 30 31import com.android.server.EventLogTags; 32 33import java.io.PrintWriter; 34import java.util.ArrayList; 35 36public class TaskStack { 37 /** Amount of time in milliseconds to animate the dim surface from one value to another, 38 * when no window animation is driving it. */ 39 private static final int DEFAULT_DIM_DURATION = 200; 40 41 /** Unique identifier */ 42 final int mStackId; 43 44 /** The service */ 45 private final WindowManagerService mService; 46 47 /** The display this stack sits under. */ 48 private DisplayContent mDisplayContent; 49 50 /** The Tasks that define this stack. Oldest Tasks are at the bottom. The ordering must match 51 * mTaskHistory in the ActivityStack with the same mStackId */ 52 private final ArrayList<Task> mTasks = new ArrayList<Task>(); 53 54 /** For comparison with DisplayContent bounds. */ 55 private Rect mTmpRect = new Rect(); 56 /** For handling display rotations. */ 57 private Rect mTmpRect2 = new Rect(); 58 59 /** Content limits relative to the DisplayContent this sits in. */ 60 private Rect mBounds = new Rect(); 61 62 /** Whether mBounds is fullscreen */ 63 private boolean mFullscreen = true; 64 65 /** Used to support {@link android.view.WindowManager.LayoutParams#FLAG_DIM_BEHIND} */ 66 private DimLayer mDimLayer; 67 68 /** The particular window with FLAG_DIM_BEHIND set. If null, hide mDimLayer. */ 69 WindowStateAnimator mDimWinAnimator; 70 71 /** Support for non-zero {@link android.view.animation.Animation#getBackgroundColor()} */ 72 DimLayer mAnimationBackgroundSurface; 73 74 /** The particular window with an Animation with non-zero background color. */ 75 WindowStateAnimator mAnimationBackgroundAnimator; 76 77 /** Set to false at the start of performLayoutAndPlaceSurfaces. If it is still false by the end 78 * then stop any dimming. */ 79 boolean mDimmingTag; 80 81 /** Application tokens that are exiting, but still on screen for animations. */ 82 final AppTokenList mExitingAppTokens = new AppTokenList(); 83 84 /** Detach this stack from its display when animation completes. */ 85 boolean mDeferDetach; 86 87 // Contains configurations settings that are different from the global configuration due to 88 // stack specific operations. E.g. {@link #setBounds}. 89 Configuration mOverrideConfig; 90 // True if the stack was forced to fullscreen disregarding the override configuration. 91 private boolean mForceFullscreen; 92 // The {@link #mBounds} before the stack was forced to fullscreen. Will be restored as the 93 // stack bounds once the stack is no longer forced to fullscreen. 94 final private Rect mPreForceFullscreenBounds; 95 96 // Device rotation as of the last time {@link #mBounds} was set. 97 int mRotation; 98 99 TaskStack(WindowManagerService service, int stackId) { 100 mService = service; 101 mStackId = stackId; 102 mOverrideConfig = Configuration.EMPTY; 103 mForceFullscreen = false; 104 mPreForceFullscreenBounds = new Rect(); 105 // TODO: remove bounds from log, they are always 0. 106 EventLog.writeEvent(EventLogTags.WM_STACK_CREATED, stackId, mBounds.left, mBounds.top, 107 mBounds.right, mBounds.bottom); 108 } 109 110 DisplayContent getDisplayContent() { 111 return mDisplayContent; 112 } 113 114 ArrayList<Task> getTasks() { 115 return mTasks; 116 } 117 118 void resizeWindows() { 119 final ArrayList<WindowState> resizingWindows = mService.mResizingWindows; 120 for (int taskNdx = mTasks.size() - 1; taskNdx >= 0; --taskNdx) { 121 final ArrayList<AppWindowToken> activities = mTasks.get(taskNdx).mAppTokens; 122 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 123 final ArrayList<WindowState> windows = activities.get(activityNdx).allAppWindows; 124 for (int winNdx = windows.size() - 1; winNdx >= 0; --winNdx) { 125 final WindowState win = windows.get(winNdx); 126 if (!resizingWindows.contains(win)) { 127 if (WindowManagerService.DEBUG_RESIZE) Slog.d(TAG, 128 "setBounds: Resizing " + win); 129 resizingWindows.add(win); 130 } 131 } 132 } 133 } 134 } 135 136 /** Set the stack bounds. Passing in null sets the bounds to fullscreen. */ 137 boolean setBounds(Rect bounds) { 138 boolean oldFullscreen = mFullscreen; 139 int rotation = Surface.ROTATION_0; 140 if (mDisplayContent != null) { 141 mDisplayContent.getLogicalDisplayRect(mTmpRect); 142 rotation = mDisplayContent.getDisplayInfo().rotation; 143 if (bounds == null) { 144 bounds = mTmpRect; 145 mFullscreen = true; 146 } else { 147 bounds.intersect(mTmpRect); // ensure bounds are entirely within the display rect 148 mFullscreen = mTmpRect.equals(bounds); 149 } 150 } 151 152 if (bounds == null) { 153 // Can't set to fullscreen if we don't have a display to get bounds from... 154 return false; 155 } 156 if (mBounds.equals(bounds) && oldFullscreen == mFullscreen && mRotation == rotation) { 157 return false; 158 } 159 160 mDimLayer.setBounds(bounds); 161 mAnimationBackgroundSurface.setBounds(bounds); 162 mBounds.set(bounds); 163 mRotation = rotation; 164 updateOverrideConfiguration(); 165 return true; 166 } 167 168 void getBounds(Rect out) { 169 out.set(mBounds); 170 } 171 172 private void updateOverrideConfiguration() { 173 final Configuration serviceConfig = mService.mCurConfiguration; 174 if (mFullscreen) { 175 mOverrideConfig = Configuration.EMPTY; 176 return; 177 } 178 179 if (mOverrideConfig == Configuration.EMPTY) { 180 mOverrideConfig = new Configuration(); 181 } 182 183 // TODO(multidisplay): Update Dp to that of display stack is on. 184 final float density = serviceConfig.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 185 mOverrideConfig.screenWidthDp = 186 Math.min((int)(mBounds.width() / density), serviceConfig.screenWidthDp); 187 mOverrideConfig.screenHeightDp = 188 Math.min((int)(mBounds.height() / density), serviceConfig.screenHeightDp); 189 mOverrideConfig.smallestScreenWidthDp = 190 Math.min(mOverrideConfig.screenWidthDp, mOverrideConfig.screenHeightDp); 191 mOverrideConfig.orientation = 192 (mOverrideConfig.screenWidthDp <= mOverrideConfig.screenHeightDp) 193 ? Configuration.ORIENTATION_PORTRAIT : Configuration.ORIENTATION_LANDSCAPE; 194 } 195 196 void updateDisplayInfo() { 197 if (mFullscreen) { 198 setBounds(null); 199 } else if (mDisplayContent != null) { 200 final int newRotation = mDisplayContent.getDisplayInfo().rotation; 201 if (mRotation == newRotation) { 202 return; 203 } 204 205 // Device rotation changed. We don't want the stack to move around on the screen when 206 // this happens, so update the stack bounds so it stays in the same place. 207 final int rotationDelta = DisplayContent.deltaRotation(mRotation, newRotation); 208 mDisplayContent.getLogicalDisplayRect(mTmpRect); 209 switch (rotationDelta) { 210 case Surface.ROTATION_0: 211 mTmpRect2.set(mBounds); 212 break; 213 case Surface.ROTATION_90: 214 mTmpRect2.top = mTmpRect.bottom - mBounds.right; 215 mTmpRect2.left = mBounds.top; 216 mTmpRect2.right = mTmpRect2.left + mBounds.height(); 217 mTmpRect2.bottom = mTmpRect2.top + mBounds.width(); 218 break; 219 case Surface.ROTATION_180: 220 mTmpRect2.top = mTmpRect.bottom - mBounds.bottom; 221 mTmpRect2.left = mTmpRect.right - mBounds.right; 222 mTmpRect2.right = mTmpRect2.left + mBounds.width(); 223 mTmpRect2.bottom = mTmpRect2.top + mBounds.height(); 224 break; 225 case Surface.ROTATION_270: 226 mTmpRect2.top = mBounds.left; 227 mTmpRect2.left = mTmpRect.right - mBounds.bottom; 228 mTmpRect2.right = mTmpRect2.left + mBounds.height(); 229 mTmpRect2.bottom = mTmpRect2.top + mBounds.width(); 230 break; 231 } 232 setBounds(mTmpRect2); 233 } 234 } 235 236 boolean isFullscreen() { 237 return mFullscreen; 238 } 239 240 /** Forces the stack to fullscreen if input is true, else un-forces the stack from fullscreen. 241 * Returns true if something happened. 242 */ 243 boolean forceFullscreen(boolean forceFullscreen) { 244 if (mForceFullscreen == forceFullscreen) { 245 return false; 246 } 247 mForceFullscreen = forceFullscreen; 248 if (forceFullscreen) { 249 if (mFullscreen) { 250 return false; 251 } 252 mPreForceFullscreenBounds.set(mBounds); 253 return setBounds(null); 254 } else { 255 if (!mFullscreen || mPreForceFullscreenBounds.isEmpty()) { 256 return false; 257 } 258 return setBounds(mPreForceFullscreenBounds); 259 } 260 } 261 262 boolean isAnimating() { 263 for (int taskNdx = mTasks.size() - 1; taskNdx >= 0; --taskNdx) { 264 final ArrayList<AppWindowToken> activities = mTasks.get(taskNdx).mAppTokens; 265 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 266 final ArrayList<WindowState> windows = activities.get(activityNdx).allAppWindows; 267 for (int winNdx = windows.size() - 1; winNdx >= 0; --winNdx) { 268 final WindowStateAnimator winAnimator = windows.get(winNdx).mWinAnimator; 269 if (winAnimator.isAnimating() || winAnimator.mWin.mExiting) { 270 return true; 271 } 272 } 273 } 274 } 275 return false; 276 } 277 278 void addTask(Task task, boolean toTop) { 279 addTask(task, toTop, task.showForAllUsers()); 280 } 281 282 /** 283 * Put a Task in this stack. Used for adding and moving. 284 * @param task The task to add. 285 * @param toTop Whether to add it to the top or bottom. 286 * @param showForAllUsers Whether to show the task regardless of the current user. 287 */ 288 void addTask(Task task, boolean toTop, boolean showForAllUsers) { 289 int stackNdx; 290 if (!toTop) { 291 stackNdx = 0; 292 } else { 293 stackNdx = mTasks.size(); 294 if (!showForAllUsers && !mService.isCurrentProfileLocked(task.mUserId)) { 295 // Place the task below all current user tasks. 296 while (--stackNdx >= 0) { 297 final Task tmpTask = mTasks.get(stackNdx); 298 if (!tmpTask.showForAllUsers() 299 || !mService.isCurrentProfileLocked(tmpTask.mUserId)) { 300 break; 301 } 302 } 303 // Put it above first non-current user task. 304 ++stackNdx; 305 } 306 } 307 if (DEBUG_TASK_MOVEMENT) Slog.d(TAG, "addTask: task=" + task + " toTop=" + toTop 308 + " pos=" + stackNdx); 309 mTasks.add(stackNdx, task); 310 311 task.mStack = this; 312 if (toTop) { 313 mDisplayContent.moveStack(this, true); 314 } 315 EventLog.writeEvent(EventLogTags.WM_TASK_MOVED, task.mTaskId, toTop ? 1 : 0, stackNdx); 316 } 317 318 void moveTaskToTop(Task task) { 319 if (DEBUG_TASK_MOVEMENT) Slog.d(TAG, "moveTaskToTop: task=" + task + " Callers=" 320 + Debug.getCallers(6)); 321 mTasks.remove(task); 322 addTask(task, true); 323 } 324 325 void moveTaskToBottom(Task task) { 326 if (DEBUG_TASK_MOVEMENT) Slog.d(TAG, "moveTaskToBottom: task=" + task); 327 mTasks.remove(task); 328 addTask(task, false); 329 } 330 331 /** 332 * Delete a Task from this stack. If it is the last Task in the stack, move this stack to the 333 * back. 334 * @param task The Task to delete. 335 */ 336 void removeTask(Task task) { 337 if (DEBUG_TASK_MOVEMENT) Slog.d(TAG, "removeTask: task=" + task); 338 mTasks.remove(task); 339 if (mDisplayContent != null) { 340 if (mTasks.isEmpty()) { 341 mDisplayContent.moveStack(this, false); 342 } 343 mDisplayContent.layoutNeeded = true; 344 } 345 for (int appNdx = mExitingAppTokens.size() - 1; appNdx >= 0; --appNdx) { 346 final AppWindowToken wtoken = mExitingAppTokens.get(appNdx); 347 if (wtoken.mTask == task) { 348 wtoken.mIsExiting = false; 349 mExitingAppTokens.remove(appNdx); 350 } 351 } 352 } 353 354 void attachDisplayContent(DisplayContent displayContent) { 355 if (mDisplayContent != null) { 356 throw new IllegalStateException("attachDisplayContent: Already attached"); 357 } 358 359 mDisplayContent = displayContent; 360 mDimLayer = new DimLayer(mService, this, displayContent); 361 mAnimationBackgroundSurface = new DimLayer(mService, this, displayContent); 362 updateDisplayInfo(); 363 } 364 365 void detachDisplay() { 366 EventLog.writeEvent(EventLogTags.WM_STACK_REMOVED, mStackId); 367 368 boolean doAnotherLayoutPass = false; 369 for (int taskNdx = mTasks.size() - 1; taskNdx >= 0; --taskNdx) { 370 final AppTokenList appWindowTokens = mTasks.get(taskNdx).mAppTokens; 371 for (int appNdx = appWindowTokens.size() - 1; appNdx >= 0; --appNdx) { 372 final WindowList appWindows = appWindowTokens.get(appNdx).allAppWindows; 373 for (int winNdx = appWindows.size() - 1; winNdx >= 0; --winNdx) { 374 mService.removeWindowInnerLocked(appWindows.get(winNdx)); 375 doAnotherLayoutPass = true; 376 } 377 } 378 } 379 if (doAnotherLayoutPass) { 380 mService.requestTraversalLocked(); 381 } 382 383 close(); 384 385 mDisplayContent = null; 386 } 387 388 void resetAnimationBackgroundAnimator() { 389 mAnimationBackgroundAnimator = null; 390 mAnimationBackgroundSurface.hide(); 391 } 392 393 private long getDimBehindFadeDuration(long duration) { 394 TypedValue tv = new TypedValue(); 395 mService.mContext.getResources().getValue( 396 com.android.internal.R.fraction.config_dimBehindFadeDuration, tv, true); 397 if (tv.type == TypedValue.TYPE_FRACTION) { 398 duration = (long)tv.getFraction(duration, duration); 399 } else if (tv.type >= TypedValue.TYPE_FIRST_INT && tv.type <= TypedValue.TYPE_LAST_INT) { 400 duration = tv.data; 401 } 402 return duration; 403 } 404 405 boolean animateDimLayers() { 406 final int dimLayer; 407 final float dimAmount; 408 if (mDimWinAnimator == null) { 409 dimLayer = mDimLayer.getLayer(); 410 dimAmount = 0; 411 } else { 412 dimLayer = mDimWinAnimator.mAnimLayer - WindowManagerService.LAYER_OFFSET_DIM; 413 dimAmount = mDimWinAnimator.mWin.mAttrs.dimAmount; 414 } 415 final float targetAlpha = mDimLayer.getTargetAlpha(); 416 if (targetAlpha != dimAmount) { 417 if (mDimWinAnimator == null) { 418 mDimLayer.hide(DEFAULT_DIM_DURATION); 419 } else { 420 long duration = (mDimWinAnimator.mAnimating && mDimWinAnimator.mAnimation != null) 421 ? mDimWinAnimator.mAnimation.computeDurationHint() 422 : DEFAULT_DIM_DURATION; 423 if (targetAlpha > dimAmount) { 424 duration = getDimBehindFadeDuration(duration); 425 } 426 mDimLayer.show(dimLayer, dimAmount, duration); 427 } 428 } else if (mDimLayer.getLayer() != dimLayer) { 429 mDimLayer.setLayer(dimLayer); 430 } 431 if (mDimLayer.isAnimating()) { 432 if (!mService.okToDisplay()) { 433 // Jump to the end of the animation. 434 mDimLayer.show(); 435 } else { 436 return mDimLayer.stepAnimation(); 437 } 438 } 439 return false; 440 } 441 442 void resetDimmingTag() { 443 mDimmingTag = false; 444 } 445 446 void setDimmingTag() { 447 mDimmingTag = true; 448 } 449 450 boolean testDimmingTag() { 451 return mDimmingTag; 452 } 453 454 boolean isDimming() { 455 return mDimLayer.isDimming(); 456 } 457 458 boolean isDimming(WindowStateAnimator winAnimator) { 459 return mDimWinAnimator == winAnimator && mDimLayer.isDimming(); 460 } 461 462 void startDimmingIfNeeded(WindowStateAnimator newWinAnimator) { 463 // Only set dim params on the highest dimmed layer. 464 // Don't turn on for an unshown surface, or for any layer but the highest dimmed layer. 465 if (newWinAnimator.mSurfaceShown && (mDimWinAnimator == null 466 || !mDimWinAnimator.mSurfaceShown 467 || mDimWinAnimator.mAnimLayer < newWinAnimator.mAnimLayer)) { 468 mDimWinAnimator = newWinAnimator; 469 if (mDimWinAnimator.mWin.mAppToken == null 470 && !mFullscreen && mDisplayContent != null) { 471 // Dim should cover the entire screen for system windows. 472 mDisplayContent.getLogicalDisplayRect(mTmpRect); 473 mDimLayer.setBounds(mTmpRect); 474 } 475 } 476 } 477 478 void stopDimmingIfNeeded() { 479 if (!mDimmingTag && isDimming()) { 480 mDimWinAnimator = null; 481 mDimLayer.setBounds(mBounds); 482 } 483 } 484 485 void setAnimationBackground(WindowStateAnimator winAnimator, int color) { 486 int animLayer = winAnimator.mAnimLayer; 487 if (mAnimationBackgroundAnimator == null 488 || animLayer < mAnimationBackgroundAnimator.mAnimLayer) { 489 mAnimationBackgroundAnimator = winAnimator; 490 animLayer = mService.adjustAnimationBackground(winAnimator); 491 mAnimationBackgroundSurface.show(animLayer - WindowManagerService.LAYER_OFFSET_DIM, 492 ((color >> 24) & 0xff) / 255f, 0); 493 } 494 } 495 496 void switchUser() { 497 int top = mTasks.size(); 498 for (int taskNdx = 0; taskNdx < top; ++taskNdx) { 499 Task task = mTasks.get(taskNdx); 500 if (mService.isCurrentProfileLocked(task.mUserId) || task.showForAllUsers()) { 501 mTasks.remove(taskNdx); 502 mTasks.add(task); 503 --top; 504 } 505 } 506 } 507 508 void close() { 509 if (mAnimationBackgroundSurface != null) { 510 mAnimationBackgroundSurface.destroySurface(); 511 mAnimationBackgroundSurface = null; 512 } 513 if (mDimLayer != null) { 514 mDimLayer.destroySurface(); 515 mDimLayer = null; 516 } 517 } 518 519 public void dump(String prefix, PrintWriter pw) { 520 pw.print(prefix); pw.print("mStackId="); pw.println(mStackId); 521 pw.print(prefix); pw.print("mDeferDetach="); pw.println(mDeferDetach); 522 for (int taskNdx = 0; taskNdx < mTasks.size(); ++taskNdx) { 523 pw.print(prefix); pw.println(mTasks.get(taskNdx)); 524 } 525 if (mAnimationBackgroundSurface.isDimming()) { 526 pw.print(prefix); pw.println("mWindowAnimationBackgroundSurface:"); 527 mAnimationBackgroundSurface.printTo(prefix + " ", pw); 528 } 529 if (mDimLayer.isDimming()) { 530 pw.print(prefix); pw.println("mDimLayer:"); 531 mDimLayer.printTo(prefix + " ", pw); 532 pw.print(prefix); pw.print("mDimWinAnimator="); pw.println(mDimWinAnimator); 533 } 534 if (!mExitingAppTokens.isEmpty()) { 535 pw.println(); 536 pw.println(" Exiting application tokens:"); 537 for (int i=mExitingAppTokens.size()-1; i>=0; i--) { 538 WindowToken token = mExitingAppTokens.get(i); 539 pw.print(" Exiting App #"); pw.print(i); 540 pw.print(' '); pw.print(token); 541 pw.println(':'); 542 token.dump(pw, " "); 543 } 544 } 545 } 546 547 @Override 548 public String toString() { 549 return "{stackId=" + mStackId + " tasks=" + mTasks + "}"; 550 } 551} 552