jQuery实现手势解锁密码特效

本文实例为大家分享了jquery实现手势解锁密码的具体代码，供大家参考，具体内容如下

效果预览图：

验证成功：（可以进行页面挑战等...）

验证失败：

 html：

<div id="gesturepwd" style="position: absolute;width:440px;height:440px;left:50%;top:50%;
margin-left:-220px;margin-top:-220px"></div>

首次渲染：

$("#gesturepwd").gesturepasswd({
  margin:"0px auto",
  backgroundcolor:"#252736", //背景色
  color:"#ffffff", //主要的控件颜色
  roundradii:42, //大圆点的半径
  pointradii:6, //大圆点被选中时显示的圆心的半径
  space:60, //大圆点之间的间隙
  width:440, //整个组件的宽度
  height:440, //整个组件的高度
  linecolor:"#00aec7", //用户划出线条的颜色
  zindex :100 //整个组件的css z-index属性
 })

密码判断代码：(这里的密码“34569”意思为页面上从上到下，从左到右的9个原点中的5个点)

$("#gesturepwd").on("haspasswd",function(e,passwd){
  var result;
  if(passwd == "34569"){//密码设置处
   result=true;
  } else {
   alert("密码错误!");
   result=false;
  }
  if(result == true){
   $("#gesturepwd").trigger("passwdright");
   settimeout(function(){
   //密码验证正确后的其他操作，打开新的页面等。。。
    //alert("密码正确！")
    //window.location.href="../统计图/index.html";
    alert("验证通过!");


   },500); //延迟半秒以照顾视觉效果
  }
  else{
   $("#gesturepwd").trigger("passwdwrong");
   //密码验证错误后的其他操作。。。
  }
 })

核心脚本调用展示(这里有兴趣的话可以仔细研究下...)：

;
(function ($) {


 var gesturepasswd= function (element, options) {
  this.$element = $(element);
  this.options = options;
  var that=this;
  this.pr=options.pointradii;
  this.rr=options.roundradii;
  this.o=options.space;
  this.color=options.color;
  //全局样式
  this.$element.css({
   "position":"relation",
   "width":this.options.width,
   "height":this.options.height,
   "background-color":options.backgroundcolor,
   "overflow":"hidden",
   "cursor":"default"
  });


  //选择器规范
  if(! $(element).attr("id"))
   $(element).attr("id",(math.random()*65535).tostring());
  this.id="#"+$(element).attr("id");



  var point = function (x,y){
   this.x =x;this.y=y
  };

  this.result="";
  this.plist=[];
  this.slist=[];
  this.tp=new point(0,0);


  this.$element.append('<canvas class="main-c" width="'+options.width+'" height="'+options.height+'" >');
  //this.$element.append('<canvas class="main-p" width="'+options.width+'" height="'+options.height+'" >');
  this.$c= $(this.id+" .main-c")[0];
  this.$ctx=this.$c.getcontext('2d');




  this.initdraw=function(){
   this.$ctx.strokestyle=this.color;
   this.$ctx.linewidth=2;
   for(var j=0; j<3;j++ ){
    for(var i =0;i<3;i++){
     this.$ctx.moveto(this.o/2+this.rr*2+i*(this.o+2*this.rr),this.o/2+this.rr+j*(this.o+2*this.rr));
     this.$ctx.arc(this.o/2+this.rr+i*(this.o+2*this.rr),this.o/2+this.rr+j*(this.o+2*this.rr),this.rr,0,2*math.pi);
     var tem=new point(this.o/2+this.rr+i*(this.o+2*this.rr),this.o/2+this.rr+j*(this.o+2*this.rr));
     if (that.plist.length < 9)
      this.plist.push(tem);
    }
   }
   this.$ctx.stroke();
   this.initimg=this.$ctx.getimagedata(0,0,this.options.width,this.options.height);
  };
  this.initdraw();
  //this.$ctx.stroke();
  this.isin=function(x,y){

   for (var p in that.plist){
    //console.log(that.plist[p][x]);
    // console.log(( math.pow((x-that.plist[p][x]),2)+math.pow((y-that.plist[p][y]),2)));
    if(( math.pow((x-that.plist[p]["x"]),2)+math.pow((y-that.plist[p]["y"]),2) ) < math.pow(this.rr,2)){
     return that.plist[p];
    }
   }
   return 0;
  };

  this.pointdraw =function(c){
   if (arguments.length>0){
    that.$ctx.strokestyle=c;
    that.$ctx.fillstyle=c;
   }
   for (var p in that.slist){
    that.$ctx.moveto(that.slist[p]["x"]+that.pr,that.slist[p]["y"]);
    that.$ctx.arc(that.slist[p]["x"],that.slist[p]["y"],that.pr,0,2*math.pi);
    that.$ctx.fill();
   }
  };
  this.linedraw=function (c){
   if (arguments.length>0){
    that.$ctx.strokestyle=c;
    that.$ctx.fillstyle=c;
   }
   if(that.slist.length > 0){
    for( var p in that.slist){
     if(p == 0){
      console.log(that.slist[p]["x"],that.slist[p]["y"]);
      that.$ctx.moveto(that.slist[p]["x"],that.slist[p]["y"]);
      continue;
     }
     that.$ctx.lineto(that.slist[p]["x"],that.slist[p]["y"]);
     console.log(that.slist[p]["x"],that.slist[p]["y"]);
    }

   }
  };

  this.alldraw =function(c){
   if (arguments.length>0){
    this.pointdraw(c);
    this.linedraw(c);
    that.$ctx.stroke();
   }
   else {
    this.pointdraw();
    this.linedraw();
   }

  };


  this.draw=function(x,y){
   that.$ctx.clearrect(0,0,that.options.width,that.options.height);
   that.$ctx.beginpath();
   //that.initdraw();
   that.$ctx.putimagedata(this.initimg,0,0);
   that.$ctx.linewidth=4;
   that.pointdraw(that.options.linecolor);
   that.linedraw(that.options.linecolor);
   that.$ctx.lineto(x,y);
   that.$ctx.stroke();
  };



  this.pointinlist=function(poi,list){
   for (var p in list){
    if( poi["x"] == list[p]["x"] && poi["y"] == list[p]["y"]){
     return ++p;
    }
   }
   return false;
  };

  this.touched=false;
  $(this.id).on ("mousedown touchstart",{that:that},function(e){
   e.data.that.touched=true;
  });
  $(this.id).on ("mouseup touchend",{that:that},function(e){
   e.data.that.touched=false;
   that.$ctx.clearrect(0,0,that.options.width,that.options.height);
   that.$ctx.beginpath();
   that.$ctx.putimagedata(e.data.that.initimg,0,0);
   that.alldraw(that.options.linecolor);
   // that.$ctx.stroke();
   for(var p in that.slist){
    if(e.data.that.pointinlist(that.slist[p], e.data.that.plist)){
     e.data.that.result= e.data.that.result+(e.data.that.pointinlist(that.slist[p], e.data.that.plist)).tostring();
    }
   }
   $(element).trigger("haspasswd",that.result);
  });

  //
  $(this.id).on('touchmove mousemove',{that:that}, function(e) {
   if(e.data.that.touched){
    var x= e.pagex || e.originalevent.targettouches[0].pagex ;
    var y = e.pagey || e.originalevent.targettouches[0].pagey;
    x=x-that.$element.offset().left;
    y=y-that.$element.offset().top;
    var p = e.data.that.isin(x, y);
    console.log(x)
    if(p != 0 ){
     if ( !e.data.that.pointinlist(p,e.data.that.slist)){
      e.data.that.slist.push(p);
     }
    }
    console.log( e.data.that.slist);
    e.data.that.draw(x, y);
   }

  });



  $(this.id).on('passwdwrong',{that:that}, function(e) {
   that.$ctx.clearrect(0,0,that.options.width,that.options.height);
   that.$ctx.beginpath();
   that.$ctx.putimagedata(that.initimg,0,0);
   that.alldraw("#cc1c21");
   that.result="";
   that.plist=[];
   that.slist=[];

   settimeout(function(){
    that.$ctx.clearrect(0,0,that.options.width,that.options.height);
    that.$ctx.beginpath();
    that.initdraw()
   },500)

  });


  $(this.id).on('passwdright',{that:that}, function(e) {
   that.$ctx.clearrect(0,0,that.options.width,that.options.height);
   that.$ctx.beginpath();
   that.$ctx.putimagedata(that.initimg,0,0);
   that.alldraw("#00a254");
   that.result="";
   that.plist=[];
   that.slist=[];
   settimeout(function(){
    that.$ctx.clearrect(0,0,that.options.width,that.options.height);
    that.$ctx.beginpath();
    that.initdraw()
   },500)
  });


 };


 gesturepasswd.defaults = {
  zindex :100,
  roundradii:25,
  pointradii:6,
  space:30,
  width:240,
  height:240,
  linecolor:"#00aec7",
  backgroundcolor:"#252736",
  color:"#ffffff"
 };




//代码整理：懒人之家 www.lanrenzhijia.com



 function plugin(option,arg) {
  return this.each(function () {
   var $this = $(this);
   var options = $.extend({}, gesturepasswd.defaults, typeof option == 'object' && option);
   var data = $this.data('gesturepasswd');
   var action = typeof option == 'string' ? option : nan;
   if (!data) $this.data('danmu', (data = new gesturepasswd(this, options)));
   if (action) data[action](arg);
  })
 }


 $.fn.gesturepasswd    = plugin;
 $.fn.gesturepasswd.constructor = gesturepasswd;



})(jquery);

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。