| /* |
| * Copyright (C) 2013 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.graphics.Region; |
| import android.view.DisplayInfo; |
| import android.view.GestureDetector; |
| import android.view.InputDevice; |
| import android.view.MotionEvent; |
| import android.view.WindowManagerPolicy.PointerEventListener; |
| |
| import com.android.server.wm.WindowManagerService.H; |
| |
| import static android.view.PointerIcon.STYLE_NOT_SPECIFIED; |
| import static android.view.PointerIcon.STYLE_DEFAULT; |
| import static android.view.PointerIcon.STYLE_HORIZONTAL_DOUBLE_ARROW; |
| import static android.view.PointerIcon.STYLE_VERTICAL_DOUBLE_ARROW; |
| import static android.view.PointerIcon.STYLE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW; |
| import static android.view.PointerIcon.STYLE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW; |
| |
| public class TaskTapPointerEventListener implements PointerEventListener { |
| |
| final private Region mTouchExcludeRegion = new Region(); |
| private final WindowManagerService mService; |
| private final DisplayContent mDisplayContent; |
| private final Rect mTmpRect = new Rect(); |
| private final Region mNonResizeableRegion = new Region(); |
| private boolean mTwoFingerScrolling; |
| private boolean mInGestureDetection; |
| private GestureDetector mGestureDetector; |
| private int mPointerIconShape = STYLE_NOT_SPECIFIED; |
| |
| public TaskTapPointerEventListener(WindowManagerService service, |
| DisplayContent displayContent) { |
| mService = service; |
| mDisplayContent = displayContent; |
| } |
| |
| // initialize the object, note this must be done outside WindowManagerService |
| // ctor, otherwise it may cause recursion as some code in GestureDetector ctor |
| // depends on WMS being already created. |
| void init() { |
| mGestureDetector = new GestureDetector( |
| mService.mContext, new TwoFingerScrollListener(), mService.mH); |
| } |
| |
| @Override |
| public void onPointerEvent(MotionEvent motionEvent) { |
| doGestureDetection(motionEvent); |
| |
| final int action = motionEvent.getAction(); |
| switch (action & MotionEvent.ACTION_MASK) { |
| case MotionEvent.ACTION_DOWN: { |
| final int x = (int) motionEvent.getX(); |
| final int y = (int) motionEvent.getY(); |
| |
| synchronized (this) { |
| if (!mTouchExcludeRegion.contains(x, y)) { |
| mService.mH.obtainMessage(H.TAP_OUTSIDE_TASK, |
| x, y, mDisplayContent).sendToTarget(); |
| } |
| } |
| break; |
| } |
| |
| case MotionEvent.ACTION_MOVE: { |
| if (motionEvent.getPointerCount() != 2) { |
| stopTwoFingerScroll(); |
| } |
| break; |
| } |
| |
| case MotionEvent.ACTION_HOVER_MOVE: { |
| final int x = (int) motionEvent.getX(); |
| final int y = (int) motionEvent.getY(); |
| final Task task = mDisplayContent.findTaskForControlPoint(x, y); |
| InputDevice inputDevice = motionEvent.getDevice(); |
| if (task == null || inputDevice == null) { |
| mPointerIconShape = STYLE_NOT_SPECIFIED; |
| break; |
| } |
| task.getDimBounds(mTmpRect); |
| if (!mTmpRect.isEmpty() && !mTmpRect.contains(x, y)) { |
| int iconShape = STYLE_DEFAULT; |
| if (x < mTmpRect.left) { |
| iconShape = |
| (y < mTmpRect.top) ? STYLE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW : |
| (y > mTmpRect.bottom) ? STYLE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW : |
| STYLE_HORIZONTAL_DOUBLE_ARROW; |
| } else if (x > mTmpRect.right) { |
| iconShape = |
| (y < mTmpRect.top) ? STYLE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW : |
| (y > mTmpRect.bottom) ? STYLE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW : |
| STYLE_HORIZONTAL_DOUBLE_ARROW; |
| } else if (y < mTmpRect.top || y > mTmpRect.bottom) { |
| iconShape = STYLE_VERTICAL_DOUBLE_ARROW; |
| } |
| if (mPointerIconShape != iconShape) { |
| mPointerIconShape = iconShape; |
| inputDevice.setPointerShape(iconShape); |
| } |
| } else { |
| mPointerIconShape = STYLE_NOT_SPECIFIED; |
| } |
| } break; |
| |
| case MotionEvent.ACTION_HOVER_EXIT: |
| mPointerIconShape = STYLE_NOT_SPECIFIED; |
| InputDevice inputDevice = motionEvent.getDevice(); |
| if (inputDevice != null) { |
| inputDevice.setPointerShape(STYLE_DEFAULT); |
| } |
| break; |
| |
| case MotionEvent.ACTION_UP: |
| case MotionEvent.ACTION_POINTER_UP: { |
| stopTwoFingerScroll(); |
| break; |
| } |
| } |
| } |
| |
| private void doGestureDetection(MotionEvent motionEvent) { |
| if (mGestureDetector == null || mNonResizeableRegion.isEmpty()) { |
| return; |
| } |
| final int action = motionEvent.getAction() & MotionEvent.ACTION_MASK; |
| final int x = (int) motionEvent.getX(); |
| final int y = (int) motionEvent.getY(); |
| final boolean isTouchInside = mNonResizeableRegion.contains(x, y); |
| if (mInGestureDetection || action == MotionEvent.ACTION_DOWN && isTouchInside) { |
| // If we receive the following actions, or the pointer goes out of the area |
| // we're interested in, stop detecting and cancel the current detection. |
| mInGestureDetection = isTouchInside |
| && action != MotionEvent.ACTION_UP |
| && action != MotionEvent.ACTION_POINTER_UP |
| && action != MotionEvent.ACTION_CANCEL; |
| if (mInGestureDetection) { |
| mGestureDetector.onTouchEvent(motionEvent); |
| } else { |
| MotionEvent cancelEvent = motionEvent.copy(); |
| cancelEvent.cancel(); |
| mGestureDetector.onTouchEvent(cancelEvent); |
| stopTwoFingerScroll(); |
| } |
| } |
| } |
| |
| private void onTwoFingerScroll(MotionEvent e) { |
| final int x = (int)e.getX(0); |
| final int y = (int)e.getY(0); |
| if (!mTwoFingerScrolling) { |
| mTwoFingerScrolling = true; |
| mService.mH.obtainMessage( |
| H.TWO_FINGER_SCROLL_START, x, y, mDisplayContent).sendToTarget(); |
| } |
| } |
| |
| private void stopTwoFingerScroll() { |
| if (mTwoFingerScrolling) { |
| mTwoFingerScrolling = false; |
| mService.mH.obtainMessage(H.FINISH_TASK_POSITIONING).sendToTarget(); |
| } |
| } |
| |
| private final class TwoFingerScrollListener extends GestureDetector.SimpleOnGestureListener { |
| @Override |
| public boolean onScroll(MotionEvent e1, MotionEvent e2, |
| float distanceX, float distanceY) { |
| if (e2.getPointerCount() == 2) { |
| onTwoFingerScroll(e2); |
| return true; |
| } |
| stopTwoFingerScroll(); |
| return false; |
| } |
| } |
| |
| void setTouchExcludeRegion(Region newRegion, Region nonResizeableRegion) { |
| synchronized (this) { |
| mTouchExcludeRegion.set(newRegion); |
| mNonResizeableRegion.set(nonResizeableRegion); |
| } |
| } |
| } |