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      1 /*
      2  * Copyright (C) 2013 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 
     17 package com.android.server.wm;
     18 
     19 import android.graphics.Rect;
     20 import android.graphics.Region;
     21 import android.hardware.input.InputManager;
     22 import android.view.MotionEvent;
     23 import android.view.WindowManagerPolicyConstants.PointerEventListener;
     24 
     25 import com.android.server.wm.WindowManagerService.H;
     26 
     27 import static android.view.Display.DEFAULT_DISPLAY;
     28 import static android.view.PointerIcon.TYPE_NOT_SPECIFIED;
     29 import static android.view.PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW;
     30 import static android.view.PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW;
     31 import static android.view.PointerIcon.TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW;
     32 import static android.view.PointerIcon.TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW;
     33 
     34 public class TaskTapPointerEventListener implements PointerEventListener {
     35 
     36     final private Region mTouchExcludeRegion = new Region();
     37     private final WindowManagerService mService;
     38     private final DisplayContent mDisplayContent;
     39     private final Rect mTmpRect = new Rect();
     40     private int mPointerIconType = TYPE_NOT_SPECIFIED;
     41 
     42     public TaskTapPointerEventListener(WindowManagerService service,
     43             DisplayContent displayContent) {
     44         mService = service;
     45         mDisplayContent = displayContent;
     46     }
     47 
     48     @Override
     49     public void onPointerEvent(MotionEvent motionEvent, int displayId) {
     50         if (displayId == getDisplayId()) {
     51             onPointerEvent(motionEvent);
     52         }
     53     }
     54 
     55     @Override
     56     public void onPointerEvent(MotionEvent motionEvent) {
     57         final int action = motionEvent.getAction();
     58         switch (action & MotionEvent.ACTION_MASK) {
     59             case MotionEvent.ACTION_DOWN: {
     60                 final int x = (int) motionEvent.getX();
     61                 final int y = (int) motionEvent.getY();
     62 
     63                 synchronized (this) {
     64                     if (!mTouchExcludeRegion.contains(x, y)) {
     65                         mService.mTaskPositioningController.handleTapOutsideTask(
     66                                 mDisplayContent, x, y);
     67                     }
     68                 }
     69             }
     70             break;
     71 
     72             case MotionEvent.ACTION_HOVER_MOVE: {
     73                 final int x = (int) motionEvent.getX();
     74                 final int y = (int) motionEvent.getY();
     75                 final Task task = mDisplayContent.findTaskForResizePoint(x, y);
     76                 int iconType = TYPE_NOT_SPECIFIED;
     77                 if (task != null) {
     78                     task.getDimBounds(mTmpRect);
     79                     if (!mTmpRect.isEmpty() && !mTmpRect.contains(x, y)) {
     80                         if (x < mTmpRect.left) {
     81                             iconType =
     82                                 (y < mTmpRect.top) ? TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW :
     83                                 (y > mTmpRect.bottom) ? TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW :
     84                                 TYPE_HORIZONTAL_DOUBLE_ARROW;
     85                         } else if (x > mTmpRect.right) {
     86                             iconType =
     87                                 (y < mTmpRect.top) ? TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW :
     88                                 (y > mTmpRect.bottom) ? TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW :
     89                                 TYPE_HORIZONTAL_DOUBLE_ARROW;
     90                         } else if (y < mTmpRect.top || y > mTmpRect.bottom) {
     91                             iconType = TYPE_VERTICAL_DOUBLE_ARROW;
     92                         }
     93                     }
     94                 }
     95                 if (mPointerIconType != iconType) {
     96                     mPointerIconType = iconType;
     97                     if (mPointerIconType == TYPE_NOT_SPECIFIED) {
     98                         // Find the underlying window and ask it restore the pointer icon.
     99                         mService.mH.obtainMessage(H.RESTORE_POINTER_ICON,
    100                                 x, y, mDisplayContent).sendToTarget();
    101                     } else {
    102                         InputManager.getInstance().setPointerIconType(mPointerIconType);
    103                     }
    104                 }
    105             }
    106             break;
    107         }
    108     }
    109 
    110     void setTouchExcludeRegion(Region newRegion) {
    111         synchronized (this) {
    112            mTouchExcludeRegion.set(newRegion);
    113         }
    114     }
    115 
    116     private int getDisplayId() {
    117         return mDisplayContent.getDisplayId();
    118     }
    119 }
    120