DisplayContent.java revision 3ddc5d60967a5daa2ebf0ede98b71093bb8cc4ae
1/* 2 * Copyright (C) 2012 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.DOCKED_STACK_ID; 20import static android.app.ActivityManager.HOME_STACK_ID; 21 22import static com.android.server.wm.WindowManagerService.DEBUG_VISIBILITY; 23import static com.android.server.wm.WindowManagerService.TAG; 24import static com.android.server.wm.WindowState.RESIZE_HANDLE_WIDTH_IN_DP; 25import static com.android.server.wm.WindowState.BOUNDS_FOR_TOUCH; 26 27import android.graphics.Rect; 28import android.graphics.Region; 29import android.util.DisplayMetrics; 30import android.util.Slog; 31import android.view.Display; 32import android.view.DisplayInfo; 33import android.view.Surface; 34 35import java.io.PrintWriter; 36import java.util.ArrayList; 37 38class DisplayContentList extends ArrayList<DisplayContent> { 39} 40 41/** 42 * Utility class for keeping track of the WindowStates and other pertinent contents of a 43 * particular Display. 44 * 45 * IMPORTANT: No method from this class should ever be used without holding 46 * WindowManagerService.mWindowMap. 47 */ 48class DisplayContent { 49 50 /** Unique identifier of this stack. */ 51 private final int mDisplayId; 52 53 /** Z-ordered (bottom-most first) list of all Window objects. Assigned to an element 54 * from mDisplayWindows; */ 55 private final WindowList mWindows = new WindowList(); 56 57 // This protects the following display size properties, so that 58 // getDisplaySize() doesn't need to acquire the global lock. This is 59 // needed because the window manager sometimes needs to use ActivityThread 60 // while it has its global state locked (for example to load animation 61 // resources), but the ActivityThread also needs get the current display 62 // size sometimes when it has its package lock held. 63 // 64 // These will only be modified with both mWindowMap and mDisplaySizeLock 65 // held (in that order) so the window manager doesn't need to acquire this 66 // lock when needing these values in its normal operation. 67 final Object mDisplaySizeLock = new Object(); 68 int mInitialDisplayWidth = 0; 69 int mInitialDisplayHeight = 0; 70 int mInitialDisplayDensity = 0; 71 int mBaseDisplayWidth = 0; 72 int mBaseDisplayHeight = 0; 73 int mBaseDisplayDensity = 0; 74 boolean mDisplayScalingDisabled; 75 private final DisplayInfo mDisplayInfo = new DisplayInfo(); 76 private final Display mDisplay; 77 private final DisplayMetrics mDisplayMetrics = new DisplayMetrics(); 78 79 Rect mBaseDisplayRect = new Rect(); 80 Rect mContentRect = new Rect(); 81 82 // Accessed directly by all users. 83 boolean layoutNeeded; 84 int pendingLayoutChanges; 85 final boolean isDefaultDisplay; 86 87 /** Window tokens that are in the process of exiting, but still on screen for animations. */ 88 final ArrayList<WindowToken> mExitingTokens = new ArrayList<>(); 89 90 /** Array containing all TaskStacks on this display. Array 91 * is stored in display order with the current bottom stack at 0. */ 92 private final ArrayList<TaskStack> mStacks = new ArrayList<>(); 93 94 /** A special TaskStack with id==HOME_STACK_ID that moves to the bottom whenever any TaskStack 95 * (except a future lockscreen TaskStack) moves to the top. */ 96 private TaskStack mHomeStack = null; 97 98 /** Detect user tapping outside of current focused task bounds .*/ 99 TaskTapPointerEventListener mTapDetector; 100 101 /** Detect user tapping outside of current focused stack bounds .*/ 102 Region mTouchExcludeRegion = new Region(); 103 104 /** Save allocating when calculating rects */ 105 private Rect mTmpRect = new Rect(); 106 private Rect mTmpRect2 = new Rect(); 107 108 /** For gathering Task objects in order. */ 109 final ArrayList<Task> mTmpTaskHistory = new ArrayList<Task>(); 110 111 final WindowManagerService mService; 112 113 /** Remove this display when animation on it has completed. */ 114 boolean mDeferredRemoval; 115 116 final DockedStackDividerController mDividerControllerLocked; 117 118 /** 119 * @param display May not be null. 120 * @param service You know. 121 */ 122 DisplayContent(Display display, WindowManagerService service) { 123 mDisplay = display; 124 mDisplayId = display.getDisplayId(); 125 display.getDisplayInfo(mDisplayInfo); 126 display.getMetrics(mDisplayMetrics); 127 isDefaultDisplay = mDisplayId == Display.DEFAULT_DISPLAY; 128 mService = service; 129 mDividerControllerLocked = new DockedStackDividerController(service.mContext, this); 130 } 131 132 int getDisplayId() { 133 return mDisplayId; 134 } 135 136 WindowList getWindowList() { 137 return mWindows; 138 } 139 140 Display getDisplay() { 141 return mDisplay; 142 } 143 144 DisplayInfo getDisplayInfo() { 145 return mDisplayInfo; 146 } 147 148 DisplayMetrics getDisplayMetrics() { 149 return mDisplayMetrics; 150 } 151 152 /** 153 * Returns true if the specified UID has access to this display. 154 */ 155 public boolean hasAccess(int uid) { 156 return mDisplay.hasAccess(uid); 157 } 158 159 public boolean isPrivate() { 160 return (mDisplay.getFlags() & Display.FLAG_PRIVATE) != 0; 161 } 162 163 ArrayList<TaskStack> getStacks() { 164 return mStacks; 165 } 166 167 /** 168 * Retrieve the tasks on this display in stack order from the bottommost TaskStack up. 169 * @return All the Tasks, in order, on this display. 170 */ 171 ArrayList<Task> getTasks() { 172 mTmpTaskHistory.clear(); 173 final int numStacks = mStacks.size(); 174 for (int stackNdx = 0; stackNdx < numStacks; ++stackNdx) { 175 mTmpTaskHistory.addAll(mStacks.get(stackNdx).getTasks()); 176 } 177 return mTmpTaskHistory; 178 } 179 180 TaskStack getHomeStack() { 181 if (mHomeStack == null && mDisplayId == Display.DEFAULT_DISPLAY) { 182 Slog.e(TAG, "getHomeStack: Returning null from this=" + this); 183 } 184 return mHomeStack; 185 } 186 187 void updateDisplayInfo() { 188 mDisplay.getDisplayInfo(mDisplayInfo); 189 mDisplay.getMetrics(mDisplayMetrics); 190 for (int i = mStacks.size() - 1; i >= 0; --i) { 191 mStacks.get(i).updateDisplayInfo(null); 192 } 193 } 194 195 void getLogicalDisplayRect(Rect out) { 196 // Uses same calculation as in LogicalDisplay#configureDisplayInTransactionLocked. 197 final int orientation = mDisplayInfo.rotation; 198 boolean rotated = (orientation == Surface.ROTATION_90 199 || orientation == Surface.ROTATION_270); 200 final int physWidth = rotated ? mBaseDisplayHeight : mBaseDisplayWidth; 201 final int physHeight = rotated ? mBaseDisplayWidth : mBaseDisplayHeight; 202 int width = mDisplayInfo.logicalWidth; 203 int left = (physWidth - width) / 2; 204 int height = mDisplayInfo.logicalHeight; 205 int top = (physHeight - height) / 2; 206 out.set(left, top, left + width, top + height); 207 } 208 209 /** Refer to {@link WindowManagerService#attachStack(int, int, boolean)} */ 210 void attachStack(TaskStack stack, boolean onTop) { 211 if (stack.mStackId == HOME_STACK_ID) { 212 if (mHomeStack != null) { 213 throw new IllegalArgumentException("attachStack: HOME_STACK_ID (0) not first."); 214 } 215 mHomeStack = stack; 216 } 217 if (onTop) { 218 mStacks.add(stack); 219 } else { 220 mStacks.add(0, stack); 221 } 222 layoutNeeded = true; 223 } 224 225 void moveStack(TaskStack stack, boolean toTop) { 226 if (!mStacks.remove(stack)) { 227 Slog.wtf(TAG, "moving stack that was not added: " + stack, new Throwable()); 228 } 229 mStacks.add(toTop ? mStacks.size() : 0, stack); 230 } 231 232 void detachStack(TaskStack stack) { 233 mStacks.remove(stack); 234 } 235 236 /** 237 * Propagate the new bounds to all child stacks. 238 * @param contentRect The bounds to apply at the top level. 239 */ 240 void resize(Rect contentRect) { 241 mContentRect.set(contentRect); 242 } 243 244 int taskIdFromPoint(int x, int y) { 245 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 246 final ArrayList<Task> tasks = mStacks.get(stackNdx).getTasks(); 247 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { 248 final Task task = tasks.get(taskNdx); 249 task.getBounds(mTmpRect); 250 if (task.inFreeformWorkspace() && mTmpRect.contains(x, y)) { 251 return task.mTaskId; 252 } 253 } 254 } 255 return -1; 256 } 257 258 /** 259 * Find the window whose outside touch area (for resizing) (x, y) falls within. 260 * Returns null if the touch doesn't fall into a resizing area. 261 */ 262 WindowState findWindowForControlPoint(int x, int y) { 263 final int delta = mService.dipToPixel(RESIZE_HANDLE_WIDTH_IN_DP, mDisplayMetrics); 264 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 265 TaskStack stack = mStacks.get(stackNdx); 266 if (!stack.allowTaskResize()) { 267 break; 268 } 269 final ArrayList<Task> tasks = stack.getTasks(); 270 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { 271 final Task task = tasks.get(taskNdx); 272 if (task.isFullscreen()) { 273 return null; 274 } 275 276 // We need to use the visible frame on the window for any touch-related 277 // tests. Can't use the task's bounds because the original task bounds 278 // might be adjusted to fit the content frame. (One example is when the 279 // task is put to top-left quadrant, the actual visible frame would not 280 // start at (0,0) after it's adjusted for the status bar.) 281 WindowState win = task.getTopAppMainWindow(); 282 if (win != null) { 283 win.getVisibleBounds(mTmpRect, !BOUNDS_FOR_TOUCH); 284 mTmpRect.inset(-delta, -delta); 285 if (mTmpRect.contains(x, y)) { 286 mTmpRect.inset(delta, delta); 287 if (!mTmpRect.contains(x, y)) { 288 return win; 289 } 290 // User touched inside the task. No need to look further, 291 // focus transfer will be handled in ACTION_UP. 292 return null; 293 } 294 } 295 } 296 } 297 return null; 298 } 299 300 void setTouchExcludeRegion(Task focusedTask) { 301 mTouchExcludeRegion.set(mBaseDisplayRect); 302 WindowList windows = getWindowList(); 303 final int delta = mService.dipToPixel(RESIZE_HANDLE_WIDTH_IN_DP, mDisplayMetrics); 304 for (int i = windows.size() - 1; i >= 0; --i) { 305 final WindowState win = windows.get(i); 306 final Task task = win.getTask(); 307 if (win.isVisibleLw() && task != null) { 308 /** 309 * Exclusion region is the region that TapDetector doesn't care about. 310 * Here we want to remove all non-focused tasks from the exclusion region. 311 * We also remove the outside touch area for resizing for all freeform 312 * tasks (including the focused). 313 * 314 * (For freeform focused task, the below logic will first remove the enlarged 315 * area, then add back the inner area.) 316 */ 317 final boolean isFreeformed = task.inFreeformWorkspace(); 318 if (task != focusedTask || isFreeformed) { 319 mTmpRect.set(win.mVisibleFrame); 320 mTmpRect.intersect(win.mVisibleInsets); 321 /** 322 * If the task is freeformed, enlarge the area to account for outside 323 * touch area for resize. 324 */ 325 if (isFreeformed) { 326 mTmpRect.inset(-delta, -delta); 327 } 328 mTouchExcludeRegion.op(mTmpRect, Region.Op.DIFFERENCE); 329 } 330 /** 331 * If we removed the focused task above, add it back and only leave its 332 * outside touch area in the exclusion. TapDectector is not interested in 333 * any touch inside the focused task itself. 334 */ 335 if (task == focusedTask && isFreeformed) { 336 mTmpRect.inset(delta, delta); 337 mTouchExcludeRegion.op(mTmpRect, Region.Op.UNION); 338 } 339 } 340 } 341 if (mTapDetector != null) { 342 mTapDetector.setTouchExcludeRegion(mTouchExcludeRegion); 343 } 344 } 345 346 void switchUserStacks() { 347 final WindowList windows = getWindowList(); 348 for (int i = 0; i < windows.size(); i++) { 349 final WindowState win = windows.get(i); 350 if (win.isHiddenFromUserLocked()) { 351 if (DEBUG_VISIBILITY) Slog.w(TAG, "user changing, hiding " + win 352 + ", attrs=" + win.mAttrs.type + ", belonging to " + win.mOwnerUid); 353 win.hideLw(false); 354 } 355 } 356 357 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 358 mStacks.get(stackNdx).switchUser(); 359 } 360 } 361 362 void resetAnimationBackgroundAnimator() { 363 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 364 mStacks.get(stackNdx).resetAnimationBackgroundAnimator(); 365 } 366 } 367 368 boolean animateDimLayers() { 369 boolean result = false; 370 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 371 final ArrayList<Task> tasks = mStacks.get(stackNdx).getTasks(); 372 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { 373 final Task task = tasks.get(taskNdx); 374 result |= task.animateDimLayers(); 375 if (task.isFullscreen()) { 376 // No point in continuing as this task covers the entire screen. 377 // Also, fullscreen tasks all share the same dim layer, so we don't want 378 // processing of fullscreen task below this one affecting the dim layer state. 379 return result; 380 } 381 } 382 } 383 return result; 384 } 385 386 void resetDimming() { 387 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 388 final ArrayList<Task> tasks = mStacks.get(stackNdx).getTasks(); 389 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { 390 tasks.get(taskNdx).clearContinueDimming(); 391 } 392 } 393 } 394 395 boolean isDimming() { 396 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 397 final ArrayList<Task> tasks = mStacks.get(stackNdx).getTasks(); 398 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { 399 if (tasks.get(taskNdx).isDimming()) { 400 return true; 401 } 402 } 403 } 404 return false; 405 } 406 407 void stopDimmingIfNeeded() { 408 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 409 final ArrayList<Task> tasks = mStacks.get(stackNdx).getTasks(); 410 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { 411 tasks.get(taskNdx).stopDimmingIfNeeded(); 412 } 413 } 414 } 415 416 void close() { 417 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 418 mStacks.get(stackNdx).close(); 419 } 420 } 421 422 boolean isAnimating() { 423 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 424 final TaskStack stack = mStacks.get(stackNdx); 425 if (stack.isAnimating()) { 426 return true; 427 } 428 } 429 return false; 430 } 431 432 void checkForDeferredActions() { 433 boolean animating = false; 434 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 435 final TaskStack stack = mStacks.get(stackNdx); 436 if (stack.isAnimating()) { 437 animating = true; 438 } else { 439 if (stack.mDeferDetach) { 440 mService.detachStackLocked(this, stack); 441 } 442 final ArrayList<Task> tasks = stack.getTasks(); 443 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { 444 final Task task = tasks.get(taskNdx); 445 AppTokenList tokens = task.mAppTokens; 446 for (int tokenNdx = tokens.size() - 1; tokenNdx >= 0; --tokenNdx) { 447 AppWindowToken wtoken = tokens.get(tokenNdx); 448 if (wtoken.mIsExiting) { 449 wtoken.removeAppFromTaskLocked(); 450 } 451 } 452 } 453 } 454 } 455 if (!animating && mDeferredRemoval) { 456 mService.onDisplayRemoved(mDisplayId); 457 } 458 } 459 460 void rotateBounds(int oldRotation, int newRotation, Rect bounds) { 461 final int rotationDelta = DisplayContent.deltaRotation(oldRotation, newRotation); 462 getLogicalDisplayRect(mTmpRect); 463 switch (rotationDelta) { 464 case Surface.ROTATION_0: 465 mTmpRect2.set(bounds); 466 break; 467 case Surface.ROTATION_90: 468 mTmpRect2.top = mTmpRect.bottom - bounds.right; 469 mTmpRect2.left = bounds.top; 470 mTmpRect2.right = mTmpRect2.left + bounds.height(); 471 mTmpRect2.bottom = mTmpRect2.top + bounds.width(); 472 break; 473 case Surface.ROTATION_180: 474 mTmpRect2.top = mTmpRect.bottom - bounds.bottom; 475 mTmpRect2.left = mTmpRect.right - bounds.right; 476 mTmpRect2.right = mTmpRect2.left + bounds.width(); 477 mTmpRect2.bottom = mTmpRect2.top + bounds.height(); 478 break; 479 case Surface.ROTATION_270: 480 mTmpRect2.top = bounds.left; 481 mTmpRect2.left = mTmpRect.right - bounds.bottom; 482 mTmpRect2.right = mTmpRect2.left + bounds.height(); 483 mTmpRect2.bottom = mTmpRect2.top + bounds.width(); 484 break; 485 } 486 bounds.set(mTmpRect2); 487 } 488 489 static int deltaRotation(int oldRotation, int newRotation) { 490 int delta = newRotation - oldRotation; 491 if (delta < 0) delta += 4; 492 return delta; 493 } 494 495 public void dump(String prefix, PrintWriter pw) { 496 pw.print(prefix); pw.print("Display: mDisplayId="); pw.println(mDisplayId); 497 final String subPrefix = " " + prefix; 498 pw.print(subPrefix); pw.print("init="); pw.print(mInitialDisplayWidth); pw.print("x"); 499 pw.print(mInitialDisplayHeight); pw.print(" "); pw.print(mInitialDisplayDensity); 500 pw.print("dpi"); 501 if (mInitialDisplayWidth != mBaseDisplayWidth 502 || mInitialDisplayHeight != mBaseDisplayHeight 503 || mInitialDisplayDensity != mBaseDisplayDensity) { 504 pw.print(" base="); 505 pw.print(mBaseDisplayWidth); pw.print("x"); pw.print(mBaseDisplayHeight); 506 pw.print(" "); pw.print(mBaseDisplayDensity); pw.print("dpi"); 507 } 508 if (mDisplayScalingDisabled) { 509 pw.println(" noscale"); 510 } 511 pw.print(" cur="); 512 pw.print(mDisplayInfo.logicalWidth); 513 pw.print("x"); pw.print(mDisplayInfo.logicalHeight); 514 pw.print(" app="); 515 pw.print(mDisplayInfo.appWidth); 516 pw.print("x"); pw.print(mDisplayInfo.appHeight); 517 pw.print(" rng="); pw.print(mDisplayInfo.smallestNominalAppWidth); 518 pw.print("x"); pw.print(mDisplayInfo.smallestNominalAppHeight); 519 pw.print("-"); pw.print(mDisplayInfo.largestNominalAppWidth); 520 pw.print("x"); pw.println(mDisplayInfo.largestNominalAppHeight); 521 pw.print(subPrefix); pw.print("deferred="); pw.print(mDeferredRemoval); 522 pw.print(" layoutNeeded="); pw.println(layoutNeeded); 523 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 524 final TaskStack stack = mStacks.get(stackNdx); 525 pw.print(prefix); pw.print("mStacks[" + stackNdx + "]"); pw.println(stack.mStackId); 526 stack.dump(prefix + " ", pw); 527 } 528 pw.println(); 529 pw.println(" Application tokens in top down Z order:"); 530 int ndx = 0; 531 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) { 532 final TaskStack stack = mStacks.get(stackNdx); 533 pw.print(" mStackId="); pw.println(stack.mStackId); 534 ArrayList<Task> tasks = stack.getTasks(); 535 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { 536 final Task task = tasks.get(taskNdx); 537 pw.print(" mTaskId="); pw.println(task.mTaskId); 538 AppTokenList tokens = task.mAppTokens; 539 for (int tokenNdx = tokens.size() - 1; tokenNdx >= 0; --tokenNdx, ++ndx) { 540 final AppWindowToken wtoken = tokens.get(tokenNdx); 541 pw.print(" Activity #"); pw.print(tokenNdx); 542 pw.print(' '); pw.print(wtoken); pw.println(":"); 543 wtoken.dump(pw, " "); 544 } 545 } 546 } 547 if (ndx == 0) { 548 pw.println(" None"); 549 } 550 pw.println(); 551 if (!mExitingTokens.isEmpty()) { 552 pw.println(); 553 pw.println(" Exiting tokens:"); 554 for (int i=mExitingTokens.size()-1; i>=0; i--) { 555 WindowToken token = mExitingTokens.get(i); 556 pw.print(" Exiting #"); pw.print(i); 557 pw.print(' '); pw.print(token); 558 pw.println(':'); 559 token.dump(pw, " "); 560 } 561 } 562 pw.println(); 563 } 564 565 @Override 566 public String toString() { 567 return "Display " + mDisplayId + " info=" + mDisplayInfo + " stacks=" + mStacks; 568 } 569 570 TaskStack getDockedStackLocked() { 571 for (int i = mStacks.size() - 1; i >= 0; i--) { 572 TaskStack stack = mStacks.get(i); 573 if (stack.mStackId == DOCKED_STACK_ID && stack.isVisibleLocked()) { 574 return stack; 575 } 576 } 577 return null; 578 } 579} 580