| /* |
| * Copyright (C) 2017 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 static com.android.server.wm.WindowManagerDebugConfig.DEBUG_TASK_POSITIONING; |
| import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; |
| |
| import android.annotation.Nullable; |
| import android.app.IActivityTaskManager; |
| import android.graphics.Point; |
| import android.graphics.Rect; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.RemoteException; |
| import android.util.Slog; |
| import android.view.Display; |
| import android.view.IWindow; |
| import android.view.InputWindowHandle; |
| import android.view.SurfaceControl; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.server.input.InputManagerService; |
| |
| /** |
| * Controller for task positioning by drag. |
| */ |
| class TaskPositioningController { |
| private final WindowManagerService mService; |
| private final InputManagerService mInputManager; |
| private final IActivityTaskManager mActivityManager; |
| private final Handler mHandler; |
| private SurfaceControl mInputSurface; |
| private DisplayContent mPositioningDisplay; |
| |
| @GuardedBy("WindowManagerSerivce.mWindowMap") |
| private @Nullable TaskPositioner mTaskPositioner; |
| |
| private final Rect mTmpClipRect = new Rect(); |
| |
| boolean isPositioningLocked() { |
| return mTaskPositioner != null; |
| } |
| |
| InputWindowHandle getDragWindowHandleLocked() { |
| return mTaskPositioner != null ? mTaskPositioner.mDragWindowHandle : null; |
| } |
| |
| TaskPositioningController(WindowManagerService service, InputManagerService inputManager, |
| IActivityTaskManager activityManager, Looper looper) { |
| mService = service; |
| mInputManager = inputManager; |
| mActivityManager = activityManager; |
| mHandler = new Handler(looper); |
| } |
| |
| void hideInputSurface(SurfaceControl.Transaction t, int displayId) { |
| if (mPositioningDisplay != null && mPositioningDisplay.getDisplayId() == displayId |
| && mInputSurface != null) { |
| t.hide(mInputSurface); |
| } |
| } |
| |
| void showInputSurface(SurfaceControl.Transaction t, int displayId) { |
| if (mPositioningDisplay == null || mPositioningDisplay.getDisplayId() != displayId) { |
| return; |
| } |
| final DisplayContent dc = mService.mRoot.getDisplayContent(displayId); |
| if (mInputSurface == null) { |
| mInputSurface = mService.makeSurfaceBuilder(dc.getSession()) |
| .setContainerLayer(true) |
| .setName("Drag and Drop Input Consumer").build(); |
| } |
| |
| final InputWindowHandle h = getDragWindowHandleLocked(); |
| if (h == null) { |
| Slog.w(TAG_WM, "Drag is in progress but there is no " |
| + "drag window handle."); |
| return; |
| } |
| |
| t.show(mInputSurface); |
| t.setInputWindowInfo(mInputSurface, h); |
| t.setLayer(mInputSurface, Integer.MAX_VALUE); |
| |
| final Display display = dc.getDisplay(); |
| final Point p = new Point(); |
| display.getRealSize(p); |
| |
| mTmpClipRect.set(0, 0, p.x, p.y); |
| t.setWindowCrop(mInputSurface, mTmpClipRect); |
| } |
| |
| boolean startMovingTask(IWindow window, float startX, float startY) { |
| WindowState win = null; |
| synchronized (mService.mGlobalLock) { |
| win = mService.windowForClientLocked(null, window, false); |
| // win shouldn't be null here, pass it down to startPositioningLocked |
| // to get warning if it's null. |
| if (!startPositioningLocked( |
| win, false /*resize*/, false /*preserveOrientation*/, startX, startY)) { |
| return false; |
| } |
| } |
| try { |
| mActivityManager.setFocusedTask(win.getTask().mTaskId); |
| } catch(RemoteException e) {} |
| return true; |
| } |
| |
| void handleTapOutsideTask(DisplayContent displayContent, int x, int y) { |
| mHandler.post(() -> { |
| int taskId = -1; |
| synchronized (mService.mGlobalLock) { |
| final Task task = displayContent.findTaskForResizePoint(x, y); |
| if (task != null) { |
| if (!startPositioningLocked(task.getTopVisibleAppMainWindow(), true /*resize*/, |
| task.preserveOrientationOnResize(), x, y)) { |
| return; |
| } |
| taskId = task.mTaskId; |
| } else { |
| taskId = displayContent.taskForTapOutside(x, y); |
| } |
| } |
| if (taskId >= 0) { |
| try { |
| mActivityManager.setFocusedTask(taskId); |
| } catch (RemoteException e) { |
| } |
| } |
| }); |
| } |
| |
| private boolean startPositioningLocked(WindowState win, boolean resize, |
| boolean preserveOrientation, float startX, float startY) { |
| if (DEBUG_TASK_POSITIONING) |
| Slog.d(TAG_WM, "startPositioningLocked: " |
| + "win=" + win + ", resize=" + resize + ", preserveOrientation=" |
| + preserveOrientation + ", {" + startX + ", " + startY + "}"); |
| |
| if (win == null || win.getAppToken() == null) { |
| Slog.w(TAG_WM, "startPositioningLocked: Bad window " + win); |
| return false; |
| } |
| if (win.mInputChannel == null) { |
| Slog.wtf(TAG_WM, "startPositioningLocked: " + win + " has no input channel, " |
| + " probably being removed"); |
| return false; |
| } |
| |
| final DisplayContent displayContent = win.getDisplayContent(); |
| if (displayContent == null) { |
| Slog.w(TAG_WM, "startPositioningLocked: Invalid display content " + win); |
| return false; |
| } |
| mPositioningDisplay = displayContent; |
| |
| mTaskPositioner = TaskPositioner.create(mService); |
| mTaskPositioner.register(displayContent); |
| |
| // We need to grab the touch focus so that the touch events during the |
| // resizing/scrolling are not sent to the app. 'win' is the main window |
| // of the app, it may not have focus since there might be other windows |
| // on top (eg. a dialog window). |
| WindowState transferFocusFromWin = win; |
| if (displayContent.mCurrentFocus != null && displayContent.mCurrentFocus != win |
| && displayContent.mCurrentFocus.mAppToken == win.mAppToken) { |
| transferFocusFromWin = displayContent.mCurrentFocus; |
| } |
| if (!mInputManager.transferTouchFocus( |
| transferFocusFromWin.mInputChannel, mTaskPositioner.mServerChannel)) { |
| Slog.e(TAG_WM, "startPositioningLocked: Unable to transfer touch focus"); |
| cleanUpTaskPositioner(); |
| return false; |
| } |
| |
| mTaskPositioner.startDrag(win, resize, preserveOrientation, startX, startY); |
| return true; |
| } |
| |
| void finishTaskPositioning() { |
| mHandler.post(() -> { |
| if (DEBUG_TASK_POSITIONING) Slog.d(TAG_WM, "finishPositioning"); |
| |
| synchronized (mService.mGlobalLock) { |
| cleanUpTaskPositioner(); |
| mPositioningDisplay = null; |
| } |
| }); |
| } |
| |
| private void cleanUpTaskPositioner() { |
| final TaskPositioner positioner = mTaskPositioner; |
| if (positioner == null) { |
| return; |
| } |
| |
| // We need to assign task positioner to null first to indicate that we're finishing task |
| // positioning. |
| mTaskPositioner = null; |
| positioner.unregister(); |
| } |
| } |