2 * Copyright (C) 2012 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.server.wm;
19 import static android.app.ActivityManager.StackId.DOCKED_STACK_ID;
20 import static android.app.ActivityManager.StackId.HOME_STACK_ID;
21 import static android.app.ActivityManager.StackId.PINNED_STACK_ID;
22 import static android.view.WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
23 import static android.view.WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
24 import static android.view.WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;
25 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_VISIBILITY;
26 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
27 import static com.android.server.wm.WindowState.RESIZE_HANDLE_WIDTH_IN_DP;
29 import android.app.ActivityManager.StackId;
30 import android.graphics.Rect;
31 import android.graphics.Region;
32 import android.graphics.Region.Op;
33 import android.util.DisplayMetrics;
34 import android.util.Slog;
35 import android.view.Display;
36 import android.view.DisplayInfo;
37 import android.view.Surface;
39 import java.io.PrintWriter;
40 import java.util.ArrayList;
42 class DisplayContentList extends ArrayList<DisplayContent> {
46 * Utility class for keeping track of the WindowStates and other pertinent contents of a
49 * IMPORTANT: No method from this class should ever be used without holding
50 * WindowManagerService.mWindowMap.
52 class DisplayContent {
54 /** Unique identifier of this stack. */
55 private final int mDisplayId;
57 /** Z-ordered (bottom-most first) list of all Window objects. Assigned to an element
58 * from mDisplayWindows; */
59 private final WindowList mWindows = new WindowList();
61 int mInitialDisplayWidth = 0;
62 int mInitialDisplayHeight = 0;
63 int mInitialDisplayDensity = 0;
64 int mBaseDisplayWidth = 0;
65 int mBaseDisplayHeight = 0;
66 int mBaseDisplayDensity = 0;
67 boolean mDisplayScalingDisabled;
68 private final DisplayInfo mDisplayInfo = new DisplayInfo();
69 private final Display mDisplay;
70 private final DisplayMetrics mDisplayMetrics = new DisplayMetrics();
72 Rect mBaseDisplayRect = new Rect();
73 Rect mContentRect = new Rect();
75 // Accessed directly by all users.
77 int pendingLayoutChanges;
78 final boolean isDefaultDisplay;
80 /** Window tokens that are in the process of exiting, but still on screen for animations. */
81 final ArrayList<WindowToken> mExitingTokens = new ArrayList<>();
83 /** Array containing all TaskStacks on this display. Array
84 * is stored in display order with the current bottom stack at 0. */
85 private final ArrayList<TaskStack> mStacks = new ArrayList<>();
87 /** A special TaskStack with id==HOME_STACK_ID that moves to the bottom whenever any TaskStack
88 * (except a future lockscreen TaskStack) moves to the top. */
89 private TaskStack mHomeStack = null;
91 /** Detect user tapping outside of current focused task bounds .*/
92 TaskTapPointerEventListener mTapDetector;
94 /** Detect user tapping outside of current focused stack bounds .*/
95 Region mTouchExcludeRegion = new Region();
97 /** Detect user tapping in a non-resizeable task in docked or fullscreen stack .*/
98 Region mNonResizeableRegion = new Region();
100 /** Save allocating when calculating rects */
101 private final Rect mTmpRect = new Rect();
102 private final Rect mTmpRect2 = new Rect();
103 private final Region mTmpRegion = new Region();
105 /** For gathering Task objects in order. */
106 final ArrayList<Task> mTmpTaskHistory = new ArrayList<Task>();
108 final WindowManagerService mService;
110 /** Remove this display when animation on it has completed. */
111 boolean mDeferredRemoval;
113 final DockedStackDividerController mDividerControllerLocked;
115 final DimLayerController mDimLayerController;
117 final ArrayList<WindowState> mTapExcludedWindows = new ArrayList<>();
120 * @param display May not be null.
121 * @param service You know.
123 DisplayContent(Display display, WindowManagerService service) {
125 mDisplayId = display.getDisplayId();
126 display.getDisplayInfo(mDisplayInfo);
127 display.getMetrics(mDisplayMetrics);
128 isDefaultDisplay = mDisplayId == Display.DEFAULT_DISPLAY;
130 initializeDisplayBaseInfo();
131 mDividerControllerLocked = new DockedStackDividerController(service, this);
132 mDimLayerController = new DimLayerController(this);
139 WindowList getWindowList() {
143 Display getDisplay() {
147 DisplayInfo getDisplayInfo() {
151 DisplayMetrics getDisplayMetrics() {
152 return mDisplayMetrics;
155 DockedStackDividerController getDockedDividerController() {
156 return mDividerControllerLocked;
160 * Returns true if the specified UID has access to this display.
162 public boolean hasAccess(int uid) {
163 return mDisplay.hasAccess(uid);
166 public boolean isPrivate() {
167 return (mDisplay.getFlags() & Display.FLAG_PRIVATE) != 0;
170 ArrayList<TaskStack> getStacks() {
175 * Retrieve the tasks on this display in stack order from the bottommost TaskStack up.
176 * @return All the Tasks, in order, on this display.
178 ArrayList<Task> getTasks() {
179 mTmpTaskHistory.clear();
180 final int numStacks = mStacks.size();
181 for (int stackNdx = 0; stackNdx < numStacks; ++stackNdx) {
182 mTmpTaskHistory.addAll(mStacks.get(stackNdx).getTasks());
184 return mTmpTaskHistory;
187 TaskStack getHomeStack() {
188 if (mHomeStack == null && mDisplayId == Display.DEFAULT_DISPLAY) {
189 Slog.e(TAG_WM, "getHomeStack: Returning null from this=" + this);
194 TaskStack getStackById(int stackId) {
195 for (int i = mStacks.size() - 1; i >= 0; --i) {
196 final TaskStack stack = mStacks.get(i);
197 if (stack.mStackId == stackId) {
204 void updateDisplayInfo() {
205 mDisplay.getDisplayInfo(mDisplayInfo);
206 mDisplay.getMetrics(mDisplayMetrics);
207 for (int i = mStacks.size() - 1; i >= 0; --i) {
208 mStacks.get(i).updateDisplayInfo(null);
212 void initializeDisplayBaseInfo() {
213 // Bootstrap the default logical display from the display manager.
214 final DisplayInfo newDisplayInfo =
215 mService.mDisplayManagerInternal.getDisplayInfo(mDisplayId);
216 if (newDisplayInfo != null) {
217 mDisplayInfo.copyFrom(newDisplayInfo);
219 mBaseDisplayWidth = mInitialDisplayWidth = mDisplayInfo.logicalWidth;
220 mBaseDisplayHeight = mInitialDisplayHeight = mDisplayInfo.logicalHeight;
221 mBaseDisplayDensity = mInitialDisplayDensity = mDisplayInfo.logicalDensityDpi;
222 mBaseDisplayRect.set(0, 0, mBaseDisplayWidth, mBaseDisplayHeight);
225 void getLogicalDisplayRect(Rect out) {
226 // Uses same calculation as in LogicalDisplay#configureDisplayInTransactionLocked.
227 final int orientation = mDisplayInfo.rotation;
228 boolean rotated = (orientation == Surface.ROTATION_90
229 || orientation == Surface.ROTATION_270);
230 final int physWidth = rotated ? mBaseDisplayHeight : mBaseDisplayWidth;
231 final int physHeight = rotated ? mBaseDisplayWidth : mBaseDisplayHeight;
232 int width = mDisplayInfo.logicalWidth;
233 int left = (physWidth - width) / 2;
234 int height = mDisplayInfo.logicalHeight;
235 int top = (physHeight - height) / 2;
236 out.set(left, top, left + width, top + height);
239 void getContentRect(Rect out) {
240 out.set(mContentRect);
243 /** Refer to {@link WindowManagerService#attachStack(int, int, boolean)} */
244 void attachStack(TaskStack stack, boolean onTop) {
245 if (stack.mStackId == HOME_STACK_ID) {
246 if (mHomeStack != null) {
247 throw new IllegalArgumentException("attachStack: HOME_STACK_ID (0) not first.");
254 mStacks.add(0, stack);
259 void moveStack(TaskStack stack, boolean toTop) {
260 if (StackId.isAlwaysOnTop(stack.mStackId) && !toTop) {
261 // This stack is always-on-top silly...
262 Slog.w(TAG_WM, "Ignoring move of always-on-top stack=" + stack + " to bottom");
266 if (!mStacks.remove(stack)) {
267 Slog.wtf(TAG_WM, "moving stack that was not added: " + stack, new Throwable());
270 int addIndex = toTop ? mStacks.size() : 0;
273 && mService.isStackVisibleLocked(PINNED_STACK_ID)
274 && stack.mStackId != PINNED_STACK_ID) {
275 // The pinned stack is always the top most stack (always-on-top) when it is visible.
276 // So, stack is moved just below the pinned stack.
278 TaskStack topStack = mStacks.get(addIndex);
279 if (topStack.mStackId != PINNED_STACK_ID) {
280 throw new IllegalStateException("Pinned stack isn't top stack??? " + mStacks);
283 mStacks.add(addIndex, stack);
286 void detachStack(TaskStack stack) {
287 mDimLayerController.removeDimLayerUser(stack);
288 mStacks.remove(stack);
292 * Propagate the new bounds to all child stacks.
293 * @param contentRect The bounds to apply at the top level.
295 void resize(Rect contentRect) {
296 mContentRect.set(contentRect);
299 int taskIdFromPoint(int x, int y) {
300 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
301 TaskStack stack = mStacks.get(stackNdx);
302 stack.getBounds(mTmpRect);
303 if (!mTmpRect.contains(x, y) || stack.isAdjustedForMinimizedDockedStack()) {
306 final ArrayList<Task> tasks = stack.getTasks();
307 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) {
308 final Task task = tasks.get(taskNdx);
309 final WindowState win = task.getTopVisibleAppMainWindow();
313 // We need to use the task's dim bounds (which is derived from the visible
314 // bounds of its apps windows) for any touch-related tests. Can't use
315 // the task's original bounds because it might be adjusted to fit the
316 // content frame. For example, the presence of the IME adjusting the
317 // windows frames when the app window is the IME target.
318 task.getDimBounds(mTmpRect);
319 if (mTmpRect.contains(x, y)) {
328 * Find the task whose outside touch area (for resizing) (x, y) falls within.
329 * Returns null if the touch doesn't fall into a resizing area.
331 Task findTaskForControlPoint(int x, int y) {
332 final int delta = mService.dipToPixel(RESIZE_HANDLE_WIDTH_IN_DP, mDisplayMetrics);
333 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
334 TaskStack stack = mStacks.get(stackNdx);
335 if (!StackId.isTaskResizeAllowed(stack.mStackId)) {
338 final ArrayList<Task> tasks = stack.getTasks();
339 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) {
340 final Task task = tasks.get(taskNdx);
341 if (task.isFullscreen()) {
345 // We need to use the task's dim bounds (which is derived from the visible
346 // bounds of its apps windows) for any touch-related tests. Can't use
347 // the task's original bounds because it might be adjusted to fit the
348 // content frame. One example is when the task is put to top-left quadrant,
349 // the actual visible area would not start at (0,0) after it's adjusted
350 // for the status bar.
351 task.getDimBounds(mTmpRect);
352 mTmpRect.inset(-delta, -delta);
353 if (mTmpRect.contains(x, y)) {
354 mTmpRect.inset(delta, delta);
355 if (!mTmpRect.contains(x, y)) {
358 // User touched inside the task. No need to look further,
359 // focus transfer will be handled in ACTION_UP.
367 void setTouchExcludeRegion(Task focusedTask) {
368 mTouchExcludeRegion.set(mBaseDisplayRect);
369 final int delta = mService.dipToPixel(RESIZE_HANDLE_WIDTH_IN_DP, mDisplayMetrics);
370 boolean addBackFocusedTask = false;
371 mNonResizeableRegion.setEmpty();
372 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
373 TaskStack stack = mStacks.get(stackNdx);
374 final ArrayList<Task> tasks = stack.getTasks();
375 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) {
376 final Task task = tasks.get(taskNdx);
377 AppWindowToken token = task.getTopVisibleAppToken();
378 if (token == null || !token.isVisible()) {
383 * Exclusion region is the region that TapDetector doesn't care about.
384 * Here we want to remove all non-focused tasks from the exclusion region.
385 * We also remove the outside touch area for resizing for all freeform
386 * tasks (including the focused).
388 * We save the focused task region once we find it, and add it back at the end.
391 task.getDimBounds(mTmpRect);
393 if (task == focusedTask) {
394 addBackFocusedTask = true;
395 mTmpRect2.set(mTmpRect);
398 final boolean isFreeformed = task.inFreeformWorkspace();
399 if (task != focusedTask || isFreeformed) {
401 // If the task is freeformed, enlarge the area to account for outside
402 // touch area for resize.
403 mTmpRect.inset(-delta, -delta);
404 // Intersect with display content rect. If we have system decor (status bar/
405 // navigation bar), we want to exclude that from the tap detection.
406 // Otherwise, if the app is partially placed under some system button (eg.
407 // Recents, Home), pressing that button would cause a full series of
408 // unwanted transfer focus/resume/pause, before we could go home.
409 mTmpRect.intersect(mContentRect);
411 mTouchExcludeRegion.op(mTmpRect, Region.Op.DIFFERENCE);
413 if (task.isTwoFingerScrollMode()) {
414 stack.getBounds(mTmpRect);
415 mNonResizeableRegion.op(mTmpRect, Region.Op.UNION);
420 // If we removed the focused task above, add it back and only leave its
421 // outside touch area in the exclusion. TapDectector is not interested in
422 // any touch inside the focused task itself.
423 if (addBackFocusedTask) {
424 mTouchExcludeRegion.op(mTmpRect2, Region.Op.UNION);
426 final WindowState inputMethod = mService.mInputMethodWindow;
427 if (inputMethod != null && inputMethod.isVisibleLw()) {
428 // If the input method is visible and the user is typing, we don't want these touch
429 // events to be intercepted and used to change focus. This would likely cause a
430 // disappearance of the input method.
431 inputMethod.getTouchableRegion(mTmpRegion);
432 mTouchExcludeRegion.op(mTmpRegion, Region.Op.UNION);
434 for (int i = mTapExcludedWindows.size() - 1; i >= 0; i--) {
435 WindowState win = mTapExcludedWindows.get(i);
436 win.getTouchableRegion(mTmpRegion);
437 mTouchExcludeRegion.op(mTmpRegion, Region.Op.UNION);
439 if (getDockedStackVisibleForUserLocked() != null) {
440 mDividerControllerLocked.getTouchRegion(mTmpRect);
441 mTmpRegion.set(mTmpRect);
442 mTouchExcludeRegion.op(mTmpRegion, Op.UNION);
444 if (mTapDetector != null) {
445 mTapDetector.setTouchExcludeRegion(mTouchExcludeRegion, mNonResizeableRegion);
449 void switchUserStacks() {
450 final WindowList windows = getWindowList();
451 for (int i = 0; i < windows.size(); i++) {
452 final WindowState win = windows.get(i);
453 if (win.isHiddenFromUserLocked()) {
454 if (DEBUG_VISIBILITY) Slog.w(TAG_WM, "user changing, hiding " + win
455 + ", attrs=" + win.mAttrs.type + ", belonging to " + win.mOwnerUid);
460 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
461 mStacks.get(stackNdx).switchUser();
465 void resetAnimationBackgroundAnimator() {
466 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
467 mStacks.get(stackNdx).resetAnimationBackgroundAnimator();
471 boolean animateDimLayers() {
472 return mDimLayerController.animateDimLayers();
475 void resetDimming() {
476 mDimLayerController.resetDimming();
479 boolean isDimming() {
480 return mDimLayerController.isDimming();
483 void stopDimmingIfNeeded() {
484 mDimLayerController.stopDimmingIfNeeded();
488 mDimLayerController.close();
489 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
490 mStacks.get(stackNdx).close();
494 boolean isAnimating() {
495 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
496 final TaskStack stack = mStacks.get(stackNdx);
497 if (stack.isAnimating()) {
504 void checkForDeferredActions() {
505 boolean animating = false;
506 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
507 final TaskStack stack = mStacks.get(stackNdx);
508 if (stack.isAnimating()) {
511 if (stack.mDeferDetach) {
512 mService.detachStackLocked(this, stack);
514 final ArrayList<Task> tasks = stack.getTasks();
515 for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) {
516 final Task task = tasks.get(taskNdx);
517 AppTokenList tokens = task.mAppTokens;
518 for (int tokenNdx = tokens.size() - 1; tokenNdx >= 0; --tokenNdx) {
519 AppWindowToken wtoken = tokens.get(tokenNdx);
520 if (wtoken.mIsExiting) {
521 wtoken.removeAppFromTaskLocked();
527 if (!animating && mDeferredRemoval) {
528 mService.onDisplayRemoved(mDisplayId);
532 void rotateBounds(int oldRotation, int newRotation, Rect bounds) {
533 final int rotationDelta = DisplayContent.deltaRotation(oldRotation, newRotation);
534 getLogicalDisplayRect(mTmpRect);
535 switch (rotationDelta) {
536 case Surface.ROTATION_0:
537 mTmpRect2.set(bounds);
539 case Surface.ROTATION_90:
540 mTmpRect2.top = mTmpRect.bottom - bounds.right;
541 mTmpRect2.left = bounds.top;
542 mTmpRect2.right = mTmpRect2.left + bounds.height();
543 mTmpRect2.bottom = mTmpRect2.top + bounds.width();
545 case Surface.ROTATION_180:
546 mTmpRect2.top = mTmpRect.bottom - bounds.bottom;
547 mTmpRect2.left = mTmpRect.right - bounds.right;
548 mTmpRect2.right = mTmpRect2.left + bounds.width();
549 mTmpRect2.bottom = mTmpRect2.top + bounds.height();
551 case Surface.ROTATION_270:
552 mTmpRect2.top = bounds.left;
553 mTmpRect2.left = mTmpRect.right - bounds.bottom;
554 mTmpRect2.right = mTmpRect2.left + bounds.height();
555 mTmpRect2.bottom = mTmpRect2.top + bounds.width();
558 bounds.set(mTmpRect2);
561 static int deltaRotation(int oldRotation, int newRotation) {
562 int delta = newRotation - oldRotation;
563 if (delta < 0) delta += 4;
567 public void dump(String prefix, PrintWriter pw) {
568 pw.print(prefix); pw.print("Display: mDisplayId="); pw.println(mDisplayId);
569 final String subPrefix = " " + prefix;
570 pw.print(subPrefix); pw.print("init="); pw.print(mInitialDisplayWidth); pw.print("x");
571 pw.print(mInitialDisplayHeight); pw.print(" "); pw.print(mInitialDisplayDensity);
573 if (mInitialDisplayWidth != mBaseDisplayWidth
574 || mInitialDisplayHeight != mBaseDisplayHeight
575 || mInitialDisplayDensity != mBaseDisplayDensity) {
577 pw.print(mBaseDisplayWidth); pw.print("x"); pw.print(mBaseDisplayHeight);
578 pw.print(" "); pw.print(mBaseDisplayDensity); pw.print("dpi");
580 if (mDisplayScalingDisabled) {
581 pw.println(" noscale");
584 pw.print(mDisplayInfo.logicalWidth);
585 pw.print("x"); pw.print(mDisplayInfo.logicalHeight);
587 pw.print(mDisplayInfo.appWidth);
588 pw.print("x"); pw.print(mDisplayInfo.appHeight);
589 pw.print(" rng="); pw.print(mDisplayInfo.smallestNominalAppWidth);
590 pw.print("x"); pw.print(mDisplayInfo.smallestNominalAppHeight);
591 pw.print("-"); pw.print(mDisplayInfo.largestNominalAppWidth);
592 pw.print("x"); pw.println(mDisplayInfo.largestNominalAppHeight);
593 pw.print(subPrefix); pw.print("deferred="); pw.print(mDeferredRemoval);
594 pw.print(" layoutNeeded="); pw.println(layoutNeeded);
597 pw.println(" Application tokens in top down Z order:");
598 for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
599 final TaskStack stack = mStacks.get(stackNdx);
600 stack.dump(prefix + " ", pw);
604 if (!mExitingTokens.isEmpty()) {
606 pw.println(" Exiting tokens:");
607 for (int i = mExitingTokens.size() - 1; i >= 0; i--) {
608 WindowToken token = mExitingTokens.get(i);
609 pw.print(" Exiting #"); pw.print(i);
610 pw.print(' '); pw.print(token);
616 mDimLayerController.dump(prefix + " ", pw);
618 mDividerControllerLocked.dump(prefix + " ", pw);
622 public String toString() {
623 return "Display " + mDisplayId + " info=" + mDisplayInfo + " stacks=" + mStacks;
627 * @return The docked stack, but only if it is visible, and {@code null} otherwise.
629 TaskStack getDockedStackLocked() {
630 final TaskStack stack = mService.mStackIdToStack.get(DOCKED_STACK_ID);
631 return (stack != null && stack.isVisibleLocked()) ? stack : null;
635 * Like {@link #getDockedStackLocked}, but also returns the docked stack if it's currently not
636 * visible, as long as it's not hidden because the current user doesn't have any tasks there.
638 TaskStack getDockedStackVisibleForUserLocked() {
639 final TaskStack stack = mService.mStackIdToStack.get(DOCKED_STACK_ID);
640 return (stack != null && stack.isVisibleForUserLocked()) ? stack : null;
644 * Find the visible, touch-deliverable window under the given point
646 WindowState getTouchableWinAtPointLocked(float xf, float yf) {
647 WindowState touchedWin = null;
648 final int x = (int) xf;
649 final int y = (int) yf;
651 for (int i = mWindows.size() - 1; i >= 0; i--) {
652 WindowState window = mWindows.get(i);
653 final int flags = window.mAttrs.flags;
654 if (!window.isVisibleLw()) {
657 if ((flags & FLAG_NOT_TOUCHABLE) != 0) {
661 window.getVisibleBounds(mTmpRect);
662 if (!mTmpRect.contains(x, y)) {
666 window.getTouchableRegion(mTmpRegion);
668 final int touchFlags = flags & (FLAG_NOT_FOCUSABLE | FLAG_NOT_TOUCH_MODAL);
669 if (mTmpRegion.contains(x, y) || touchFlags == 0) {