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);