package com.letv.watchball.view;
import android.content.Context;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.MotionEvent;
import android.widget.RelativeLayout;
public class LetvPlayGestureLayout extends RelativeLayout implements
OnGestureListener {
/**
* 无事件
* */
public static final int NONE = 0x00;
/**
* 双指下划
* */
public static final int DOUBLE_FINGERS_DOWN = 0x10;
/**
* 双指上划
* */
public static final int DOUBLE_FINGERS_UP = 0x11;
/**
* 横划完成
* */
public static final int LANDSCAPE_SCROLL_FINISH = 0x12;
/**
* 手势回调
* */
private LetvPlayGestureCallBack letvPlayGestureCallBack;
/**
* 当前手势事件
* */
public int event;
/**
* 手势探测器
* */
private GestureDetector mGestureDetector = null;
/**
* Y轴变化值，在一次事件完成后，会被归0
* */
private float offsetY = 0;
/**
* X轴变化值，在一次事件完成后，会被归0
* */
private float offsetX = 0;
/**
* 竖划斜率限制
* */
private float portraitLimitSlope = 4; // 上下滑动手势的限制斜率
/**
* 横划斜率限制
* */
private float landscapeLimitSlope = 1f / 4f; // 上下滑动手势的限制斜率
/**
* 方向锁
* */
private int directionalLock = 0; // 0 无方向，1纵向，2横向
/**
* 双指上划伐值
* */
private float doubleFingersUpCuttingValue = 0.3f;
/**
* 双指下划伐值
* */
private float doubleFingersDownCuttingValue = 0.3f;
/**
* 屏幕两边上下滑动区域伐值
* */
private float bothSidesCuttingValue = 0.2f;
/**
* 右半屏长度
* */
private float rightProgerss = 0;
/**
* 左半屏长度
* */
private float leftProgress = 0;
/**
* 横划进度记录
* */
private float landscapeProgress = 0;
public LetvPlayGestureLayout(Context activity, AttributeSet attrs) {
super(activity, attrs);
init();
}
public LetvPlayGestureLayout(Context activity) {
super(activity);
init();
}
public LetvPlayGestureLayout(Context activity, AttributeSet attrs,
int defStyle) {
super(activity, attrs, defStyle);
init();
}
/**
* 手势类内部初始化
* */
protected void init() {
mGestureDetector = new GestureDetector(this);
mGestureDetector
.setOnDoubleTapListener(new GestureDetector.OnDoubleTapListener() {
/**
* 单击
* */
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
if (letvPlayGestureCallBack != null) {
letvPlayGestureCallBack.onSingleTapUp();
}
return true;
}
/**
* 双击
* */
@Override
public boolean onDoubleTapEvent(MotionEvent e) {
return false;
}
/**
* 双击
* */
@Override
public boolean onDoubleTap(MotionEvent e) {
return true;
}
});
}
/**
* 初始化页面空间，请再控件初始化后在调用
* */
public void initializeData(float rightProgerss, float leftProgress) {
this.rightProgerss = rightProgerss;
this.leftProgress = leftProgress;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (MotionEvent.ACTION_UP == event.getAction()) {
// 释放方向锁
switch (this.event) {
case DOUBLE_FINGERS_UP:
if (letvPlayGestureCallBack != null) {
letvPlayGestureCallBack.onDoubleFingersUp();
}
break;
case DOUBLE_FINGERS_DOWN:
if (letvPlayGestureCallBack != null) {
letvPlayGestureCallBack.onDoubleFingersDown();
}
break;
case LANDSCAPE_SCROLL_FINISH:
if (letvPlayGestureCallBack != null) {
letvPlayGestureCallBack
.onLandscapeScrollFinish(landscapeProgress);
}
break;
default:
break;
}
this.directionalLock = 0;
this.offsetY = 0;
this.offsetX = 0;
this.landscapeProgress = 0;
this.event = NONE;
if (letvPlayGestureCallBack != null) {
letvPlayGestureCallBack.onTouchEventUp();
}
}
return mGestureDetector.onTouchEvent(event);
}
@Override
public boolean onDown(MotionEvent e) {
leftProgress = 0;
rightProgerss = 0;
if (letvPlayGestureCallBack != null) {
letvPlayGestureCallBack.onDown();
}
return true;
}
@Override
public void onShowPress(MotionEvent e) {
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
return false;
}
/**
* 完成手势走的调节声音和调节亮度的功能
* */
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY) {
int s = e2.getPointerCount();
if (s == 2) {// 双指滑动
offsetY += distanceY;
if (offsetY > 0) {
if (offsetY > doubleFingersUpCuttingValue * getHeight()) {// 向下
event = DOUBLE_FINGERS_UP;
} else {// 距离不够，或者划回来就取消事件
event = NONE;
}
} else {
if (offsetY < -doubleFingersDownCuttingValue * getHeight()) {// 向上
event = DOUBLE_FINGERS_DOWN;
} else {// 距离不够，或者划回来就取消事件
event = NONE;
}
}
} else if (s == 1) {// 单指滑动
if (Math.abs(distanceY) > portraitLimitSlope * Math.abs(distanceX)
&& directionalLock != 2) {// 斜率判断，竖划
directionalLock = 1;
if (e1.getX() > (1 - bothSidesCuttingValue) * getWidth()) {// 右半屏幕上下滑动
rightProgerss += distanceY / getHeight();
// if (rightProgerss > 1) {
// rightProgerss = 1;
// }
// if (rightProgerss < 0) {
// rightProgerss = 0;
// }
if (letvPlayGestureCallBack != null) {
letvPlayGestureCallBack.onRightScroll(rightProgerss);
}
} else if (e1.getX() < bothSidesCuttingValue * getWidth()) {// 左半屏幕上下滑动
leftProgress += distanceY / getHeight();
// if (leftProgress > 1) {
// leftProgress = 1;
// }
// if (leftProgress < 0) {
// leftProgress = 0;
// }
if (letvPlayGestureCallBack != null) {
letvPlayGestureCallBack.onLeftScroll(leftProgress);
}
}
} else if (Math.abs(distanceY) < landscapeLimitSlope
* Math.abs(distanceX)
&& directionalLock != 1) {// 斜率判断，横划
directionalLock = 2;
offsetX -= distanceX;
landscapeProgress = offsetX / getWidth();
if (letvPlayGestureCallBack != null) {
letvPlayGestureCallBack
.onLandscapeScroll(landscapeProgress);
}
event = LANDSCAPE_SCROLL_FINISH;
}
}
return false;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
return false;
}
@Override
public void onLongPress(MotionEvent e) {
if (letvPlayGestureCallBack != null) {
letvPlayGestureCallBack.onLongPress();
}
}
public LetvPlayGestureCallBack getLetvPlayGestureCallBack() {
return letvPlayGestureCallBack;
}
public void setLetvPlayGestureCallBack(
LetvPlayGestureCallBack letvPlayGestureCallBack) {
this.letvPlayGestureCallBack = letvPlayGestureCallBack;
}
public interface LetvPlayGestureCallBack {
/**
* 双指下划
* */
public void onDown();
/**
* 双指下划
* */
public void onDoubleFingersDown();
/**
* 双指上划
* */
public void onDoubleFingersUp();
/**
* 单击
* */
public void onSingleTapUp();
/**
* 双击
* */
public void onDoubleTap();
/**
* 右边上下滑动 变化总量
* */
public void onRightScroll(float incremental);
/**
* 左边上下滑动 变化总量
* */
public void onLeftScroll(float incremental);
/**
* 横向滑动 变化总量
* */
public void onLandscapeScroll(float incremental);
/**
* 横向滑动 变化总量
* */
public void onLandscapeScrollFinish(float incremental);
/**
* up事件，完成所有操作了
* */
public void onTouchEventUp();
/**
* 长按
* */
public void onLongPress();
}
}