/*
* Copyright (C) 2012 YIXIA.COM
*
* 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.vanco.abplayer.view;
import com.vanco.abplayer.util.DeviceUtils;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.support.v4.view.GestureDetectorCompat;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.ScaleGestureDetector;
public class CommonGestures {
public static final int SCALE_STATE_BEGIN = 0;
public static final int SCALE_STATE_SCALEING = 1;
public static final int SCALE_STATE_END = 2;
private boolean mGestureEnabled;
private GestureDetectorCompat mDoubleTapGestureDetector;
private GestureDetectorCompat mTapGestureDetector;
private ScaleGestureDetector mScaleDetector;
private Activity mContext;
public CommonGestures(Activity ctx) {
mContext = ctx;
mDoubleTapGestureDetector = new GestureDetectorCompat(mContext, new DoubleTapGestureListener());
mTapGestureDetector = new GestureDetectorCompat(mContext, new TapGestureListener());
mScaleDetector = new ScaleGestureDetector(mContext, new ScaleDetectorListener());
}
public boolean onTouchEvent(MotionEvent event) {
if (mListener == null)
return false;
if (mTapGestureDetector.onTouchEvent(event))
return true;
if (event.getPointerCount() > 1) {
try {
if (mScaleDetector != null && mScaleDetector.onTouchEvent(event))
return true;
} catch (Exception e) {
e.printStackTrace();
}
}
if (mDoubleTapGestureDetector.onTouchEvent(event))
return true;
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_UP:
mListener.onGestureEnd();
break;
}
return false;
}
private class TapGestureListener extends SimpleOnGestureListener {
@Override
public boolean onSingleTapConfirmed(MotionEvent event) {
if (mListener != null)
mListener.onSingleTap();
return true;
}
@Override
public void onLongPress(MotionEvent e) {
if (mListener != null && mGestureEnabled)
mListener.onLongPress();
}
}
@SuppressLint("NewApi")
private class ScaleDetectorListener implements ScaleGestureDetector.OnScaleGestureListener {
@Override
public boolean onScale(ScaleGestureDetector detector) {
if (mListener != null && mGestureEnabled)
mListener.onScale(detector.getScaleFactor(), SCALE_STATE_SCALEING);
return true;
}
@Override
public void onScaleEnd(ScaleGestureDetector detector) {
if (mListener != null && mGestureEnabled)
mListener.onScale(0F, SCALE_STATE_END);
}
@Override
public boolean onScaleBegin(ScaleGestureDetector detector) {
if (mListener != null && mGestureEnabled)
mListener.onScale(0F, SCALE_STATE_BEGIN);
return true;
}
}
private class DoubleTapGestureListener extends SimpleOnGestureListener {
private boolean mDown = false;
@Override
public boolean onDown(MotionEvent event) {
mDown = true;
return super.onDown(event);
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
if (mListener != null && mGestureEnabled && e1 != null && e2 != null) {
if (mDown) {
mListener.onGestureBegin();
mDown = false;
}
float mOldX = e1.getX(), mOldY = e1.getY();
int windowWidth = DeviceUtils.getScreenWidth(mContext);
int windowHeight = DeviceUtils.getScreenHeight(mContext);
if (Math.abs(e2.getY(0) - mOldY) * 2 > Math.abs(e2.getX(0) - mOldX)) {
if (mOldX > windowWidth * 4.0 / 5) {
mListener.onRightSlide((mOldY - e2.getY(0)) / windowHeight);
} else if (mOldX < windowWidth / 5.0) {
mListener.onLeftSlide((mOldY - e2.getY(0)) / windowHeight);
}
}
}
return super.onScroll(e1, e2, distanceX, distanceY);
}
@Override
public boolean onDoubleTap(MotionEvent event) {
if (mListener != null && mGestureEnabled)
mListener.onDoubleTap();
return super.onDoubleTap(event);
}
}
public void setTouchListener(TouchListener l, boolean enable) {
mListener = l;
mGestureEnabled = enable;
}
private TouchListener mListener;
public interface TouchListener {
public void onGestureBegin();
public void onGestureEnd();
public void onLeftSlide(float percent);
public void onRightSlide(float percent);
public void onSingleTap();
public void onDoubleTap();
public void onScale(float scaleFactor, int state);
public void onLongPress();
}
}