| /* |
| * Copyright (C) 2012 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.keyguard; |
| |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.ViewConfiguration; |
| |
| public class CheckLongPressHelper { |
| private View mView; |
| private boolean mHasPerformedLongPress; |
| private CheckForLongPress mPendingCheckForLongPress; |
| private float mDownX, mDownY; |
| private int mLongPressTimeout; |
| private int mScaledTouchSlop; |
| |
| class CheckForLongPress implements Runnable { |
| public void run() { |
| if ((mView.getParent() != null) && mView.hasWindowFocus() |
| && !mHasPerformedLongPress) { |
| if (mView.performLongClick()) { |
| mView.setPressed(false); |
| mHasPerformedLongPress = true; |
| } |
| } |
| } |
| } |
| |
| public CheckLongPressHelper(View v) { |
| mScaledTouchSlop = ViewConfiguration.get(v.getContext()).getScaledTouchSlop(); |
| mLongPressTimeout = ViewConfiguration.getLongPressTimeout(); |
| mView = v; |
| } |
| |
| public void postCheckForLongPress(MotionEvent ev) { |
| mDownX = ev.getX(); |
| mDownY = ev.getY(); |
| mHasPerformedLongPress = false; |
| |
| if (mPendingCheckForLongPress == null) { |
| mPendingCheckForLongPress = new CheckForLongPress(); |
| } |
| mView.postDelayed(mPendingCheckForLongPress, mLongPressTimeout); |
| } |
| |
| public void onMove(MotionEvent ev) { |
| float x = ev.getX(); |
| float y = ev.getY(); |
| boolean xMoved = Math.abs(mDownX - x) > mScaledTouchSlop; |
| boolean yMoved = Math.abs(mDownY - y) > mScaledTouchSlop; |
| |
| if (xMoved || yMoved) { |
| cancelLongPress(); |
| } |
| } |
| |
| public void cancelLongPress() { |
| mHasPerformedLongPress = false; |
| if (mPendingCheckForLongPress != null) { |
| mView.removeCallbacks(mPendingCheckForLongPress); |
| mPendingCheckForLongPress = null; |
| } |
| } |
| |
| public boolean hasPerformedLongPress() { |
| return mHasPerformedLongPress; |
| } |
| } |