| /* |
| * 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.gallery3d.photoeditor.actions; |
| |
| import android.content.Context; |
| import android.graphics.PointF; |
| import android.util.AttributeSet; |
| import android.view.GestureDetector; |
| import android.view.MotionEvent; |
| |
| /** |
| * A view that detects user gestures and touch motions. |
| */ |
| class TouchView extends FullscreenToolView { |
| |
| /** |
| * Listener of single tap on a point (relative to photo coordinates). |
| */ |
| public interface SingleTapListener { |
| |
| void onSingleTap(PointF point); |
| } |
| |
| private final GestureDetector gestureDetector; |
| private SingleTapListener singleTapListener; |
| |
| public TouchView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| |
| gestureDetector = new GestureDetector( |
| context, new GestureDetector.SimpleOnGestureListener() { |
| |
| @Override |
| public boolean onDown(MotionEvent e) { |
| // GestureDetector onTouchEvent returns true only for events whose preceding |
| // down-events have been consumed. |
| return true; |
| } |
| |
| @Override |
| public boolean onSingleTapUp(MotionEvent e) { |
| if (singleTapListener != null) { |
| PointF point = new PointF(); |
| mapPhotoPoint(e.getX(), e.getY(), point); |
| singleTapListener.onSingleTap(point); |
| } |
| return true; |
| } |
| }); |
| gestureDetector.setIsLongpressEnabled(false); |
| } |
| |
| public void setSingleTapListener(SingleTapListener listener) { |
| singleTapListener = listener; |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| return isEnabled() && gestureDetector.onTouchEvent(event); |
| } |
| } |