百度地图手机端单触点单击和长按事件，解决部分手机(小米手机)地图单击事件失效，多触点、拖动依然触发长按的bug

/**
* Author 岳晓
*
* 对百度地图的事件扩展，目前扩展了fastclick和longclick,
* 解决某些设备click不执行的问题
* 解决长按事件在拖动、多触点依然执行的bug
* v1.0.0
*/

(function(){
BMap.Map.prototype.on=function(evt,fn,option){
var _option = {
canBubble:true
}

extend(_option,option)

if(!evt || !fn) return;

var $this = this;
var evtList = ["longtouch","onetouch"];
if(inArray(evt,evtList)){
MesureEvents[evt]($this,evt,fn,option);
$this.getContainer().querySelector("div.BMap_mask").addEventListener(evt,fn);
}
else{
$this.addEventListener(evt,fn);
/*function(e){
if(option.canBubble){
e.domEvent.stopPropagation();
}
fn.call(this,e);
});*/
}
};

var centerAndZoom = BMap.Map.prototype.centerAndZoom;

BMap.Map.prototype.centerAndZoom  = function(){

var $this = this;
centerAndZoom.apply(this,arguments);
if(!$this.hasRegistMyTouch){
$this.on("onetouch",function(e){
//console.log(e);
var event = document.createEvent("MouseEvent");
event.initEvent("fastclick",true,true);

event.clientX = e.clientX;
event.clientY = e.clientY;
event.point = e.point;
$this.dispatchEvent(event);

var event = document.createEvent("MouseEvent");
event.initEvent("click",true,true);
event.clientX = e.clientX;
event.clientY = e.clientY;
$this.dispatchEvent(event);
});
$this.on("longtouch",function(e){
//console.log(e);
var event = document.createEvent("TouchEvent");
event.initEvent("longclick",true,true);
event.clientX = e.clientX;
event.clientY = e.clientY;
event.point = e.point;
$this.dispatchEvent(event);
});
$this.hasRegistMyTouch = true;
}

}
var MesureEvents = {
onetouch:function($this,evt,fn,data,option){
var ismoved;
var time = null;
var touchLocation = null;
var maxTouchesCount = 0;

var container = $this.getContainer();
var mask = container.querySelector("div.BMap_mask");
var panes = $this.getPanes();

$this.addEventListener("touchstart",function(e){

var temp = Math.max(maxTouchesCount,e.touches.length);
if(temp==1) {
var touch = e.changedTouches[0];

if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;

maxTouchesCount = temp;

touchLocation = {
x:touch.clientX,
y:touch.clientY
};
time = new Date().getTime();
}
});
$this.addEventListener("touchmove",function(e){
maxTouchesCount = Math.max(maxTouchesCount,e.touches.length);

if(maxTouchesCount==1) {
var touch = e.changedTouches[0];

if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;

if(Math.abs(touchLocation.x-touch.clientX)>0 && Math.abs(touchLocation.y-touch.clientY)>0){//解决部分手机对touchmove过分“敏感”的问题
ismoved = true;
//console.log("touchmove---");
}
else{
ismoved = false;
}
}
});
$this.addEventListener("touchend",function(e){

var touches =e.touches.length;

if(touches==0){

var touch = e.changedTouches[0];

if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;

var temp = maxTouchesCount;
var tempM = ismoved;
ismoved= false;
maxTouchesCount = 0;
if(temp==1 && !tempM /*&& /BMap_mask/.test(e.srcElement.className)*/ && new Date().getTime()-time<500){

var event = document.createEvent("Event");
event.initEvent("onetouch",true,true);
var touch = e.changedTouches[0];

event.clientX = touch.clientX;
event.clientY = touch.clientY;
event.point =calLngLat($this,event.clientX,event.clientY);
mask.dispatchEvent(event,fn);
}
}
});
},
longtouch:function($this,evt,fn,data,option){
var ismoved;
var time = null;
var timeout;
var maxTouchesCount = 0;
var touchLocation = null;
var container = $this.getContainer();
var mask = container.querySelector("div.BMap_mask");
var panes = $this.getPanes();
$this.addEventListener("touchstart",function(e){

var temp = Math.max(maxTouchesCount,e.touches.length);
if(temp==1) {
var touch = e.changedTouches[0];

if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;

maxTouchesCount = temp;

touchLocation = {
x:touch.clientX,
y:touch.clientY
};
time = new Date().getTime();
timeout = setTimeout(function(){

clearTimeout(timeout);
timeout = null;
longtouch(e);
},750);
}
});
$this.addEventListener("touchmove",function(e){
maxTouchesCount = Math.max(maxTouchesCount,e.touches.length);
if(maxTouchesCount==1) {
var touch = e.changedTouches[0];

if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;

//console.log("move:" +touch.clientX +"," + touch.clientY);
if(Math.abs(touchLocation.x-touch.clientX)>=2 && Math.abs(touchLocation.y-touch.clientY)>2){//解决部分手机对touchmove过分“敏感”的问题
ismoved = true;
//console.log("touchmove---");
if(timeout){
clearTimeout(timeout);
timeout = null;
}
}
else{
ismoved = false;
}
}
else{
if(timeout){
clearTimeout(timeout);
timeout = null;
}
}
});

function longtouch(e){
var temp = maxTouchesCount;
var tempM = ismoved;
ismoved= false;
maxTouchesCount = 0;
if(temp==1 && !tempM){

var event = document.createEvent("Event");
event.initEvent("longtouch",true,true);
var touch = e.changedTouches[0];

event.clientX = touch.clientX;
event.clientY = touch.clientY;
event.point =calLngLat($this,event.clientX,event.clientY);
$this.getContainer().querySelector("div.BMap_mask").dispatchEvent(event);

}
}

$this.addEventListener("touchend",function(e){

var touches =e.touches.length;

if(touches==0){

var touch = e.changedTouches[0];

if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;

maxTouchesCount = 0;
ismoved= false;
}
if(new Date().getTime()-time<1000){
if(timeout){
clearTimeout(timeout);
timeout = null;
}
}
});
}
}

function calLngLat($this,x,y){
var container = $this.getContainer();
var rect = container.getBoundingClientRect();
var y = y - rect.top;
var x = x - rect.left;
var bounds = $this.getBounds();
var lefTop = new BMap.Point(bounds.getSouthWest().lng,bounds.getNorthEast().lat);
var lefTopPix = $this.pointToPixel(lefTop);
var pix = new BMap.Pixel(lefTopPix.x + x,lefTopPix.y+y);
var point = $this.pixelToPoint(pix);
return point;
}

function inArray(obj,array){
for(x in array){
if(obj==array[x]) return true;
}
return false;
}

function extend(o1,o2){
if(o1 && o2){
for(x in o2){
if(o2.hasOwnProperty(x) && o2[x]!=undefined){
o1[x] = o2[x];
}
}
}
}

function isAncestors(element,nodes,root){
var p = element;
while(p && p!=root){
if(inArray(p,nodes)){
return true;
}
p = p.parentElement;
}
return false;
}

})(BMap);