| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.wm; |
| |
| import android.graphics.Rect; |
| import android.os.RemoteException; |
| import android.util.Log; |
| import android.util.Slog; |
| import android.view.InputChannel; |
| import android.view.KeyEvent; |
| import android.view.WindowManager; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| |
| final class InputMonitor { |
| private final WindowManagerService mService; |
| |
| // Current window with input focus for keys and other non-touch events. May be null. |
| private WindowState mInputFocus; |
| |
| // When true, prevents input dispatch from proceeding until set to false again. |
| private boolean mInputDispatchFrozen; |
| |
| // When true, input dispatch proceeds normally. Otherwise all events are dropped. |
| private boolean mInputDispatchEnabled = true; |
| |
| // When true, need to call updateInputWindowsLw(). |
| private boolean mUpdateInputWindowsNeeded = true; |
| |
| // Array of window handles to provide to the input dispatcher. |
| private InputWindowHandle[] mInputWindowHandles; |
| private int mInputWindowHandleCount; |
| |
| // Set to true when the first input device configuration change notification |
| // is received to indicate that the input devices are ready. |
| private final Object mInputDevicesReadyMonitor = new Object(); |
| private boolean mInputDevicesReady; |
| |
| public InputMonitor(WindowManagerService service) { |
| mService = service; |
| } |
| |
| /* Notifies the window manager about a broken input channel. |
| * |
| * Called by the InputManager. |
| */ |
| public void notifyInputChannelBroken(InputWindowHandle inputWindowHandle) { |
| if (inputWindowHandle == null) { |
| return; |
| } |
| |
| synchronized (mService.mWindowMap) { |
| WindowState windowState = (WindowState) inputWindowHandle.windowState; |
| if (windowState != null) { |
| Slog.i(WindowManagerService.TAG, "WINDOW DIED " + windowState); |
| mService.removeWindowLocked(windowState.mSession, windowState); |
| } |
| } |
| } |
| |
| /* Notifies the window manager about an application that is not responding. |
| * Returns a new timeout to continue waiting in nanoseconds, or 0 to abort dispatch. |
| * |
| * Called by the InputManager. |
| */ |
| public long notifyANR(InputApplicationHandle inputApplicationHandle, |
| InputWindowHandle inputWindowHandle) { |
| AppWindowToken appWindowToken = null; |
| if (inputWindowHandle != null) { |
| synchronized (mService.mWindowMap) { |
| WindowState windowState = (WindowState) inputWindowHandle.windowState; |
| if (windowState != null) { |
| Slog.i(WindowManagerService.TAG, "Input event dispatching timed out sending to " |
| + windowState.mAttrs.getTitle()); |
| appWindowToken = windowState.mAppToken; |
| } |
| } |
| } |
| |
| if (appWindowToken == null && inputApplicationHandle != null) { |
| appWindowToken = inputApplicationHandle.appWindowToken; |
| if (appWindowToken != null) { |
| Slog.i(WindowManagerService.TAG, |
| "Input event dispatching timed out sending to application " |
| + appWindowToken.stringName); |
| } |
| } |
| |
| if (appWindowToken != null && appWindowToken.appToken != null) { |
| try { |
| // Notify the activity manager about the timeout and let it decide whether |
| // to abort dispatching or keep waiting. |
| boolean abort = appWindowToken.appToken.keyDispatchingTimedOut(); |
| if (! abort) { |
| // The activity manager declined to abort dispatching. |
| // Wait a bit longer and timeout again later. |
| return appWindowToken.inputDispatchingTimeoutNanos; |
| } |
| } catch (RemoteException ex) { |
| } |
| } |
| return 0; // abort dispatching |
| } |
| |
| private void addInputWindowHandleLw(InputWindowHandle windowHandle) { |
| if (mInputWindowHandles == null) { |
| mInputWindowHandles = new InputWindowHandle[16]; |
| } |
| if (mInputWindowHandleCount >= mInputWindowHandles.length) { |
| mInputWindowHandles = Arrays.copyOf(mInputWindowHandles, |
| mInputWindowHandleCount * 2); |
| } |
| mInputWindowHandles[mInputWindowHandleCount++] = windowHandle; |
| } |
| |
| private void clearInputWindowHandlesLw() { |
| while (mInputWindowHandleCount != 0) { |
| mInputWindowHandles[--mInputWindowHandleCount] = null; |
| } |
| } |
| |
| public void setUpdateInputWindowsNeededLw() { |
| mUpdateInputWindowsNeeded = true; |
| } |
| |
| /* Updates the cached window information provided to the input dispatcher. */ |
| public void updateInputWindowsLw(boolean force) { |
| if (!force && !mUpdateInputWindowsNeeded) { |
| return; |
| } |
| mUpdateInputWindowsNeeded = false; |
| |
| if (false) Slog.d(WindowManagerService.TAG, ">>>>>> ENTERED updateInputWindowsLw"); |
| |
| // Populate the input window list with information about all of the windows that |
| // could potentially receive input. |
| // As an optimization, we could try to prune the list of windows but this turns |
| // out to be difficult because only the native code knows for sure which window |
| // currently has touch focus. |
| final ArrayList<WindowState> windows = mService.mWindows; |
| |
| // If there's a drag in flight, provide a pseudowindow to catch drag input |
| final boolean inDrag = (mService.mDragState != null); |
| if (inDrag) { |
| if (WindowManagerService.DEBUG_DRAG) { |
| Log.d(WindowManagerService.TAG, "Inserting drag window"); |
| } |
| final InputWindowHandle dragWindowHandle = mService.mDragState.mDragWindowHandle; |
| if (dragWindowHandle != null) { |
| addInputWindowHandleLw(dragWindowHandle); |
| } else { |
| Slog.w(WindowManagerService.TAG, "Drag is in progress but there is no " |
| + "drag window handle."); |
| } |
| } |
| |
| final int NFW = mService.mFakeWindows.size(); |
| for (int i = 0; i < NFW; i++) { |
| addInputWindowHandleLw(mService.mFakeWindows.get(i).mWindowHandle); |
| } |
| |
| final int N = windows.size(); |
| for (int i = N - 1; i >= 0; i--) { |
| final WindowState child = windows.get(i); |
| final InputChannel inputChannel = child.mInputChannel; |
| final InputWindowHandle inputWindowHandle = child.mInputWindowHandle; |
| if (inputChannel == null || inputWindowHandle == null || child.mRemoved) { |
| // Skip this window because it cannot possibly receive input. |
| continue; |
| } |
| |
| final int flags = child.mAttrs.flags; |
| final int type = child.mAttrs.type; |
| |
| final boolean hasFocus = (child == mInputFocus); |
| final boolean isVisible = child.isVisibleLw(); |
| final boolean hasWallpaper = (child == mService.mWallpaperTarget) |
| && (type != WindowManager.LayoutParams.TYPE_KEYGUARD); |
| |
| // If there's a drag in progress and 'child' is a potential drop target, |
| // make sure it's been told about the drag |
| if (inDrag && isVisible) { |
| mService.mDragState.sendDragStartedIfNeededLw(child); |
| } |
| |
| // Add a window to our list of input windows. |
| inputWindowHandle.name = child.toString(); |
| inputWindowHandle.layoutParamsFlags = flags; |
| inputWindowHandle.layoutParamsType = type; |
| inputWindowHandle.dispatchingTimeoutNanos = child.getInputDispatchingTimeoutNanos(); |
| inputWindowHandle.visible = isVisible; |
| inputWindowHandle.canReceiveKeys = child.canReceiveKeys(); |
| inputWindowHandle.hasFocus = hasFocus; |
| inputWindowHandle.hasWallpaper = hasWallpaper; |
| inputWindowHandle.paused = child.mAppToken != null ? child.mAppToken.paused : false; |
| inputWindowHandle.layer = child.mLayer; |
| inputWindowHandle.ownerPid = child.mSession.mPid; |
| inputWindowHandle.ownerUid = child.mSession.mUid; |
| inputWindowHandle.inputFeatures = child.mAttrs.inputFeatures; |
| |
| final Rect frame = child.mFrame; |
| inputWindowHandle.frameLeft = frame.left; |
| inputWindowHandle.frameTop = frame.top; |
| inputWindowHandle.frameRight = frame.right; |
| inputWindowHandle.frameBottom = frame.bottom; |
| |
| if (child.mGlobalScale != 1) { |
| // If we are scaling the window, input coordinates need |
| // to be inversely scaled to map from what is on screen |
| // to what is actually being touched in the UI. |
| inputWindowHandle.scaleFactor = 1.0f/child.mGlobalScale; |
| } else { |
| inputWindowHandle.scaleFactor = 1; |
| } |
| |
| child.getTouchableRegion(inputWindowHandle.touchableRegion); |
| |
| addInputWindowHandleLw(inputWindowHandle); |
| } |
| |
| // Send windows to native code. |
| mService.mInputManager.setInputWindows(mInputWindowHandles); |
| |
| // Clear the list in preparation for the next round. |
| clearInputWindowHandlesLw(); |
| |
| if (false) Slog.d(WindowManagerService.TAG, "<<<<<<< EXITED updateInputWindowsLw"); |
| } |
| |
| /* Notifies that the input device configuration has changed. */ |
| public void notifyConfigurationChanged() { |
| mService.sendNewConfiguration(); |
| |
| synchronized (mInputDevicesReadyMonitor) { |
| if (!mInputDevicesReady) { |
| mInputDevicesReady = true; |
| mInputDevicesReadyMonitor.notifyAll(); |
| } |
| } |
| } |
| |
| /* Waits until the built-in input devices have been configured. */ |
| public boolean waitForInputDevicesReady(long timeoutMillis) { |
| synchronized (mInputDevicesReadyMonitor) { |
| if (!mInputDevicesReady) { |
| try { |
| mInputDevicesReadyMonitor.wait(timeoutMillis); |
| } catch (InterruptedException ex) { |
| } |
| } |
| return mInputDevicesReady; |
| } |
| } |
| |
| /* Notifies that the lid switch changed state. */ |
| public void notifyLidSwitchChanged(long whenNanos, boolean lidOpen) { |
| mService.mPolicy.notifyLidSwitchChanged(whenNanos, lidOpen); |
| } |
| |
| /* Provides an opportunity for the window manager policy to intercept early key |
| * processing as soon as the key has been read from the device. */ |
| public int interceptKeyBeforeQueueing( |
| KeyEvent event, int policyFlags, boolean isScreenOn) { |
| return mService.mPolicy.interceptKeyBeforeQueueing(event, policyFlags, isScreenOn); |
| } |
| |
| /* Provides an opportunity for the window manager policy to intercept early |
| * motion event processing when the screen is off since these events are normally |
| * dropped. */ |
| public int interceptMotionBeforeQueueingWhenScreenOff(int policyFlags) { |
| return mService.mPolicy.interceptMotionBeforeQueueingWhenScreenOff(policyFlags); |
| } |
| |
| /* Provides an opportunity for the window manager policy to process a key before |
| * ordinary dispatch. */ |
| public boolean interceptKeyBeforeDispatching( |
| InputWindowHandle focus, KeyEvent event, int policyFlags) { |
| WindowState windowState = focus != null ? (WindowState) focus.windowState : null; |
| return mService.mPolicy.interceptKeyBeforeDispatching(windowState, event, policyFlags); |
| } |
| |
| /* Provides an opportunity for the window manager policy to process a key that |
| * the application did not handle. */ |
| public KeyEvent dispatchUnhandledKey( |
| InputWindowHandle focus, KeyEvent event, int policyFlags) { |
| WindowState windowState = focus != null ? (WindowState) focus.windowState : null; |
| return mService.mPolicy.dispatchUnhandledKey(windowState, event, policyFlags); |
| } |
| |
| /* Called when the current input focus changes. |
| * Layer assignment is assumed to be complete by the time this is called. |
| */ |
| public void setInputFocusLw(WindowState newWindow, boolean updateInputWindows) { |
| if (WindowManagerService.DEBUG_INPUT) { |
| Slog.d(WindowManagerService.TAG, "Input focus has changed to " + newWindow); |
| } |
| |
| if (newWindow != mInputFocus) { |
| if (newWindow != null && newWindow.canReceiveKeys()) { |
| // Displaying a window implicitly causes dispatching to be unpaused. |
| // This is to protect against bugs if someone pauses dispatching but |
| // forgets to resume. |
| newWindow.mToken.paused = false; |
| } |
| |
| mInputFocus = newWindow; |
| setUpdateInputWindowsNeededLw(); |
| |
| if (updateInputWindows) { |
| updateInputWindowsLw(false /*force*/); |
| } |
| } |
| } |
| |
| public void setFocusedAppLw(AppWindowToken newApp) { |
| // Focused app has changed. |
| if (newApp == null) { |
| mService.mInputManager.setFocusedApplication(null); |
| } else { |
| final InputApplicationHandle handle = newApp.mInputApplicationHandle; |
| handle.name = newApp.toString(); |
| handle.dispatchingTimeoutNanos = newApp.inputDispatchingTimeoutNanos; |
| |
| mService.mInputManager.setFocusedApplication(handle); |
| } |
| } |
| |
| public void pauseDispatchingLw(WindowToken window) { |
| if (! window.paused) { |
| if (WindowManagerService.DEBUG_INPUT) { |
| Slog.v(WindowManagerService.TAG, "Pausing WindowToken " + window); |
| } |
| |
| window.paused = true; |
| updateInputWindowsLw(true /*force*/); |
| } |
| } |
| |
| public void resumeDispatchingLw(WindowToken window) { |
| if (window.paused) { |
| if (WindowManagerService.DEBUG_INPUT) { |
| Slog.v(WindowManagerService.TAG, "Resuming WindowToken " + window); |
| } |
| |
| window.paused = false; |
| updateInputWindowsLw(true /*force*/); |
| } |
| } |
| |
| public void freezeInputDispatchingLw() { |
| if (! mInputDispatchFrozen) { |
| if (WindowManagerService.DEBUG_INPUT) { |
| Slog.v(WindowManagerService.TAG, "Freezing input dispatching"); |
| } |
| |
| mInputDispatchFrozen = true; |
| updateInputDispatchModeLw(); |
| } |
| } |
| |
| public void thawInputDispatchingLw() { |
| if (mInputDispatchFrozen) { |
| if (WindowManagerService.DEBUG_INPUT) { |
| Slog.v(WindowManagerService.TAG, "Thawing input dispatching"); |
| } |
| |
| mInputDispatchFrozen = false; |
| updateInputDispatchModeLw(); |
| } |
| } |
| |
| public void setEventDispatchingLw(boolean enabled) { |
| if (mInputDispatchEnabled != enabled) { |
| if (WindowManagerService.DEBUG_INPUT) { |
| Slog.v(WindowManagerService.TAG, "Setting event dispatching to " + enabled); |
| } |
| |
| mInputDispatchEnabled = enabled; |
| updateInputDispatchModeLw(); |
| } |
| } |
| |
| private void updateInputDispatchModeLw() { |
| mService.mInputManager.setInputDispatchMode(mInputDispatchEnabled, mInputDispatchFrozen); |
| } |
| } |