2 * Copyright (C) 2010 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 com.android.server.wm.WindowManagerDebugConfig.DEBUG_DRAG;
20 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_FOCUS_LIGHT;
21 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_INPUT;
22 import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_TASK_POSITIONING;
23 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
25 import android.app.ActivityManagerNative;
26 import android.graphics.Rect;
27 import android.os.Debug;
28 import android.os.RemoteException;
29 import android.util.Log;
30 import android.util.Slog;
31 import android.view.Display;
32 import android.view.InputChannel;
33 import android.view.KeyEvent;
34 import android.view.WindowManager;
36 import com.android.server.input.InputApplicationHandle;
37 import com.android.server.input.InputManagerService;
38 import com.android.server.input.InputWindowHandle;
40 import java.io.PrintWriter;
41 import java.util.Arrays;
43 final class InputMonitor implements InputManagerService.WindowManagerCallbacks {
44 private final WindowManagerService mService;
46 // Current window with input focus for keys and other non-touch events. May be null.
47 private WindowState mInputFocus;
49 // When true, prevents input dispatch from proceeding until set to false again.
50 private boolean mInputDispatchFrozen;
52 // The reason the input is currently frozen or null if the input isn't frozen.
53 private String mInputFreezeReason = null;
55 // When true, input dispatch proceeds normally. Otherwise all events are dropped.
56 // Initially false, so that input does not get dispatched until boot is finished at
57 // which point the ActivityManager will enable dispatching.
58 private boolean mInputDispatchEnabled;
60 // When true, need to call updateInputWindowsLw().
61 private boolean mUpdateInputWindowsNeeded = true;
63 // Array of window handles to provide to the input dispatcher.
64 private InputWindowHandle[] mInputWindowHandles;
65 private int mInputWindowHandleCount;
67 // Set to true when the first input device configuration change notification
68 // is received to indicate that the input devices are ready.
69 private final Object mInputDevicesReadyMonitor = new Object();
70 private boolean mInputDevicesReady;
72 public InputMonitor(WindowManagerService service) {
76 /* Notifies the window manager about a broken input channel.
78 * Called by the InputManager.
81 public void notifyInputChannelBroken(InputWindowHandle inputWindowHandle) {
82 if (inputWindowHandle == null) {
86 synchronized (mService.mWindowMap) {
87 WindowState windowState = (WindowState) inputWindowHandle.windowState;
88 if (windowState != null) {
89 Slog.i(TAG_WM, "WINDOW DIED " + windowState);
90 mService.removeWindowLocked(windowState);
95 /* Notifies the window manager about an application that is not responding.
96 * Returns a new timeout to continue waiting in nanoseconds, or 0 to abort dispatch.
98 * Called by the InputManager.
101 public long notifyANR(InputApplicationHandle inputApplicationHandle,
102 InputWindowHandle inputWindowHandle, String reason) {
103 AppWindowToken appWindowToken = null;
104 WindowState windowState = null;
105 boolean aboveSystem = false;
106 synchronized (mService.mWindowMap) {
107 if (inputWindowHandle != null) {
108 windowState = (WindowState) inputWindowHandle.windowState;
109 if (windowState != null) {
110 appWindowToken = windowState.mAppToken;
113 if (appWindowToken == null && inputApplicationHandle != null) {
114 appWindowToken = (AppWindowToken)inputApplicationHandle.appWindowToken;
117 if (windowState != null) {
118 Slog.i(TAG_WM, "Input event dispatching timed out "
119 + "sending to " + windowState.mAttrs.getTitle()
120 + ". Reason: " + reason);
121 // Figure out whether this window is layered above system windows.
122 // We need to do this here to help the activity manager know how to
123 // layer its ANR dialog.
124 int systemAlertLayer = mService.mPolicy.windowTypeToLayerLw(
125 WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
126 aboveSystem = windowState.mBaseLayer > systemAlertLayer;
127 } else if (appWindowToken != null) {
128 Slog.i(TAG_WM, "Input event dispatching timed out "
129 + "sending to application " + appWindowToken.stringName
130 + ". Reason: " + reason);
132 Slog.i(TAG_WM, "Input event dispatching timed out "
133 + ". Reason: " + reason);
136 mService.saveANRStateLocked(appWindowToken, windowState, reason);
139 if (appWindowToken != null && appWindowToken.appToken != null) {
141 // Notify the activity manager about the timeout and let it decide whether
142 // to abort dispatching or keep waiting.
143 boolean abort = appWindowToken.appToken.keyDispatchingTimedOut(reason);
145 // The activity manager declined to abort dispatching.
146 // Wait a bit longer and timeout again later.
147 return appWindowToken.inputDispatchingTimeoutNanos;
149 } catch (RemoteException ex) {
151 } else if (windowState != null) {
153 // Notify the activity manager about the timeout and let it decide whether
154 // to abort dispatching or keep waiting.
155 long timeout = ActivityManagerNative.getDefault().inputDispatchingTimedOut(
156 windowState.mSession.mPid, aboveSystem, reason);
158 // The activity manager declined to abort dispatching.
159 // Wait a bit longer and timeout again later.
160 return timeout * 1000000L; // nanoseconds
162 } catch (RemoteException ex) {
165 return 0; // abort dispatching
168 private void addInputWindowHandleLw(final InputWindowHandle windowHandle) {
169 if (mInputWindowHandles == null) {
170 mInputWindowHandles = new InputWindowHandle[16];
172 if (mInputWindowHandleCount >= mInputWindowHandles.length) {
173 mInputWindowHandles = Arrays.copyOf(mInputWindowHandles,
174 mInputWindowHandleCount * 2);
176 mInputWindowHandles[mInputWindowHandleCount++] = windowHandle;
179 private void addInputWindowHandleLw(final InputWindowHandle inputWindowHandle,
180 final WindowState child, int flags, final int type, final boolean isVisible,
181 final boolean hasFocus, final boolean hasWallpaper) {
182 // Add a window to our list of input windows.
183 inputWindowHandle.name = child.toString();
184 flags = child.getTouchableRegion(inputWindowHandle.touchableRegion, flags);
185 inputWindowHandle.layoutParamsFlags = flags;
186 inputWindowHandle.layoutParamsType = type;
187 inputWindowHandle.dispatchingTimeoutNanos = child.getInputDispatchingTimeoutNanos();
188 inputWindowHandle.visible = isVisible;
189 inputWindowHandle.canReceiveKeys = child.canReceiveKeys();
190 inputWindowHandle.hasFocus = hasFocus;
191 inputWindowHandle.hasWallpaper = hasWallpaper;
192 inputWindowHandle.paused = child.mAppToken != null ? child.mAppToken.paused : false;
193 inputWindowHandle.layer = child.mLayer;
194 inputWindowHandle.ownerPid = child.mSession.mPid;
195 inputWindowHandle.ownerUid = child.mSession.mUid;
196 inputWindowHandle.inputFeatures = child.mAttrs.inputFeatures;
198 final Rect frame = child.mFrame;
199 inputWindowHandle.frameLeft = frame.left;
200 inputWindowHandle.frameTop = frame.top;
201 inputWindowHandle.frameRight = frame.right;
202 inputWindowHandle.frameBottom = frame.bottom;
204 if (child.isDockedInEffect()) {
205 // Adjust to account for non-resizeable tasks that's scrolled
206 inputWindowHandle.frameLeft += child.mXOffset;
207 inputWindowHandle.frameTop += child.mYOffset;
208 inputWindowHandle.frameRight += child.mXOffset;
209 inputWindowHandle.frameBottom += child.mYOffset;
212 if (child.mGlobalScale != 1) {
213 // If we are scaling the window, input coordinates need
214 // to be inversely scaled to map from what is on screen
215 // to what is actually being touched in the UI.
216 inputWindowHandle.scaleFactor = 1.0f/child.mGlobalScale;
218 inputWindowHandle.scaleFactor = 1;
222 Slog.d(TAG_WM, "addInputWindowHandle: "
223 + child + ", " + inputWindowHandle);
225 addInputWindowHandleLw(inputWindowHandle);
228 private void clearInputWindowHandlesLw() {
229 while (mInputWindowHandleCount != 0) {
230 mInputWindowHandles[--mInputWindowHandleCount] = null;
234 public void setUpdateInputWindowsNeededLw() {
235 mUpdateInputWindowsNeeded = true;
238 /* Updates the cached window information provided to the input dispatcher. */
239 public void updateInputWindowsLw(boolean force) {
240 if (!force && !mUpdateInputWindowsNeeded) {
243 mUpdateInputWindowsNeeded = false;
245 if (false) Slog.d(TAG_WM, ">>>>>> ENTERED updateInputWindowsLw");
247 // Populate the input window list with information about all of the windows that
248 // could potentially receive input.
249 // As an optimization, we could try to prune the list of windows but this turns
250 // out to be difficult because only the native code knows for sure which window
251 // currently has touch focus.
252 boolean disableWallpaperTouchEvents = false;
254 // If there's a drag in flight, provide a pseudowindow to catch drag input
255 final boolean inDrag = (mService.mDragState != null);
258 Log.d(TAG_WM, "Inserting drag window");
260 final InputWindowHandle dragWindowHandle = mService.mDragState.mDragWindowHandle;
261 if (dragWindowHandle != null) {
262 addInputWindowHandleLw(dragWindowHandle);
264 Slog.w(TAG_WM, "Drag is in progress but there is no "
265 + "drag window handle.");
269 final boolean inPositioning = (mService.mTaskPositioner != null);
271 if (DEBUG_TASK_POSITIONING) {
272 Log.d(TAG_WM, "Inserting window handle for repositioning");
274 final InputWindowHandle dragWindowHandle = mService.mTaskPositioner.mDragWindowHandle;
275 if (dragWindowHandle != null) {
276 addInputWindowHandleLw(dragWindowHandle);
279 "Repositioning is in progress but there is no drag window handle.");
283 boolean addInputConsumerHandle = mService.mInputConsumer != null;
285 boolean addWallpaperInputConsumerHandle = mService.mWallpaperInputConsumer != null;
287 // Add all windows on the default display.
288 final int numDisplays = mService.mDisplayContents.size();
289 final WallpaperController wallpaperController = mService.mWallpaperControllerLocked;
290 for (int displayNdx = 0; displayNdx < numDisplays; ++displayNdx) {
291 final DisplayContent displayContent = mService.mDisplayContents.valueAt(displayNdx);
292 final WindowList windows = displayContent.getWindowList();
293 for (int winNdx = windows.size() - 1; winNdx >= 0; --winNdx) {
294 final WindowState child = windows.get(winNdx);
295 final InputChannel inputChannel = child.mInputChannel;
296 final InputWindowHandle inputWindowHandle = child.mInputWindowHandle;
297 if (inputChannel == null || inputWindowHandle == null || child.mRemoved
298 || child.isAdjustedForMinimizedDock()) {
299 // Skip this window because it cannot possibly receive input.
302 if (addInputConsumerHandle
303 && inputWindowHandle.layer <= mService.mInputConsumer.mWindowHandle.layer) {
304 addInputWindowHandleLw(mService.mInputConsumer.mWindowHandle);
305 addInputConsumerHandle = false;
308 if (addWallpaperInputConsumerHandle) {
309 if (child.mAttrs.type == WindowManager.LayoutParams.TYPE_WALLPAPER) {
310 // Add the wallpaper input consumer above the first wallpaper window.
311 addInputWindowHandleLw(mService.mWallpaperInputConsumer.mWindowHandle);
312 addWallpaperInputConsumerHandle = false;
316 final int flags = child.mAttrs.flags;
317 final int privateFlags = child.mAttrs.privateFlags;
318 final int type = child.mAttrs.type;
320 final boolean hasFocus = (child == mInputFocus);
321 final boolean isVisible = child.isVisibleLw();
323 & WindowManager.LayoutParams.PRIVATE_FLAG_DISABLE_WALLPAPER_TOUCH_EVENTS)
325 disableWallpaperTouchEvents = true;
327 final boolean hasWallpaper = wallpaperController.isWallpaperTarget(child)
328 && (privateFlags & WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD) == 0
329 && !disableWallpaperTouchEvents;
330 final boolean onDefaultDisplay = (child.getDisplayId() == Display.DEFAULT_DISPLAY);
332 // If there's a drag in progress and 'child' is a potential drop target,
333 // make sure it's been told about the drag
334 if (inDrag && isVisible && onDefaultDisplay) {
335 mService.mDragState.sendDragStartedIfNeededLw(child);
338 addInputWindowHandleLw(
339 inputWindowHandle, child, flags, type, isVisible, hasFocus, hasWallpaper);
343 if (addWallpaperInputConsumerHandle) {
344 // No wallpaper found, add the wallpaper input consumer at the end.
345 addInputWindowHandleLw(mService.mWallpaperInputConsumer.mWindowHandle);
348 // Send windows to native code.
349 mService.mInputManager.setInputWindows(mInputWindowHandles);
351 // Clear the list in preparation for the next round.
352 clearInputWindowHandlesLw();
354 if (false) Slog.d(TAG_WM, "<<<<<<< EXITED updateInputWindowsLw");
357 /* Notifies that the input device configuration has changed. */
359 public void notifyConfigurationChanged() {
360 mService.sendNewConfiguration();
362 synchronized (mInputDevicesReadyMonitor) {
363 if (!mInputDevicesReady) {
364 mInputDevicesReady = true;
365 mInputDevicesReadyMonitor.notifyAll();
370 /* Waits until the built-in input devices have been configured. */
371 public boolean waitForInputDevicesReady(long timeoutMillis) {
372 synchronized (mInputDevicesReadyMonitor) {
373 if (!mInputDevicesReady) {
375 mInputDevicesReadyMonitor.wait(timeoutMillis);
376 } catch (InterruptedException ex) {
379 return mInputDevicesReady;
383 /* Notifies that the lid switch changed state. */
385 public void notifyLidSwitchChanged(long whenNanos, boolean lidOpen) {
386 mService.mPolicy.notifyLidSwitchChanged(whenNanos, lidOpen);
389 /* Notifies that the camera lens cover state has changed. */
391 public void notifyCameraLensCoverSwitchChanged(long whenNanos, boolean lensCovered) {
392 mService.mPolicy.notifyCameraLensCoverSwitchChanged(whenNanos, lensCovered);
395 /* Provides an opportunity for the window manager policy to intercept early key
396 * processing as soon as the key has been read from the device. */
398 public int interceptKeyBeforeQueueing(KeyEvent event, int policyFlags) {
399 return mService.mPolicy.interceptKeyBeforeQueueing(event, policyFlags);
402 /* Provides an opportunity for the window manager policy to intercept early motion event
403 * processing when the device is in a non-interactive state since these events are normally
406 public int interceptMotionBeforeQueueingNonInteractive(long whenNanos, int policyFlags) {
407 return mService.mPolicy.interceptMotionBeforeQueueingNonInteractive(
408 whenNanos, policyFlags);
411 /* Provides an opportunity for the window manager policy to process a key before
412 * ordinary dispatch. */
414 public long interceptKeyBeforeDispatching(
415 InputWindowHandle focus, KeyEvent event, int policyFlags) {
416 WindowState windowState = focus != null ? (WindowState) focus.windowState : null;
417 return mService.mPolicy.interceptKeyBeforeDispatching(windowState, event, policyFlags);
420 /* Provides an opportunity for the window manager policy to process a key that
421 * the application did not handle. */
423 public KeyEvent dispatchUnhandledKey(
424 InputWindowHandle focus, KeyEvent event, int policyFlags) {
425 WindowState windowState = focus != null ? (WindowState) focus.windowState : null;
426 return mService.mPolicy.dispatchUnhandledKey(windowState, event, policyFlags);
429 /* Callback to get pointer layer. */
431 public int getPointerLayer() {
432 return mService.mPolicy.windowTypeToLayerLw(WindowManager.LayoutParams.TYPE_POINTER)
433 * WindowManagerService.TYPE_LAYER_MULTIPLIER
434 + WindowManagerService.TYPE_LAYER_OFFSET;
437 /* Called when the current input focus changes.
438 * Layer assignment is assumed to be complete by the time this is called.
440 public void setInputFocusLw(WindowState newWindow, boolean updateInputWindows) {
441 if (DEBUG_FOCUS_LIGHT || DEBUG_INPUT) {
442 Slog.d(TAG_WM, "Input focus has changed to " + newWindow);
445 if (newWindow != mInputFocus) {
446 if (newWindow != null && newWindow.canReceiveKeys()) {
447 // Displaying a window implicitly causes dispatching to be unpaused.
448 // This is to protect against bugs if someone pauses dispatching but
449 // forgets to resume.
450 newWindow.mToken.paused = false;
453 mInputFocus = newWindow;
454 setUpdateInputWindowsNeededLw();
456 if (updateInputWindows) {
457 updateInputWindowsLw(false /*force*/);
462 public void setFocusedAppLw(AppWindowToken newApp) {
463 // Focused app has changed.
464 if (newApp == null) {
465 mService.mInputManager.setFocusedApplication(null);
467 final InputApplicationHandle handle = newApp.mInputApplicationHandle;
468 handle.name = newApp.toString();
469 handle.dispatchingTimeoutNanos = newApp.inputDispatchingTimeoutNanos;
471 mService.mInputManager.setFocusedApplication(handle);
475 public void pauseDispatchingLw(WindowToken window) {
476 if (! window.paused) {
478 Slog.v(TAG_WM, "Pausing WindowToken " + window);
481 window.paused = true;
482 updateInputWindowsLw(true /*force*/);
486 public void resumeDispatchingLw(WindowToken window) {
489 Slog.v(TAG_WM, "Resuming WindowToken " + window);
492 window.paused = false;
493 updateInputWindowsLw(true /*force*/);
497 public void freezeInputDispatchingLw() {
498 if (!mInputDispatchFrozen) {
500 Slog.v(TAG_WM, "Freezing input dispatching");
503 mInputDispatchFrozen = true;
505 if (DEBUG_INPUT || true) {
506 mInputFreezeReason = Debug.getCallers(6);
508 updateInputDispatchModeLw();
512 public void thawInputDispatchingLw() {
513 if (mInputDispatchFrozen) {
515 Slog.v(TAG_WM, "Thawing input dispatching");
518 mInputDispatchFrozen = false;
519 mInputFreezeReason = null;
520 updateInputDispatchModeLw();
524 public void setEventDispatchingLw(boolean enabled) {
525 if (mInputDispatchEnabled != enabled) {
527 Slog.v(TAG_WM, "Setting event dispatching to " + enabled);
530 mInputDispatchEnabled = enabled;
531 updateInputDispatchModeLw();
535 private void updateInputDispatchModeLw() {
536 mService.mInputManager.setInputDispatchMode(mInputDispatchEnabled, mInputDispatchFrozen);
539 void dump(PrintWriter pw, String prefix) {
540 if (mInputFreezeReason != null) {
541 pw.println(prefix + "mInputFreezeReason=" + mInputFreezeReason);