miniprogram/wwwroot/skin/app/default/static/js/H5lock.js

(function(){
  window.H5lock = function(obj){
    this.chooseType = Number(PublicLib.getCookieInfo('chooseType')) || obj.chooseType;
    this.linwidth = obj.linwidth
    this.successcolor = obj.successcolor
    this.successbgcolor = obj.successbgcolor
    this.wariningcolor = obj.wariningcolor
    this.wariningbgcolor = obj.wariningbgcolor
    this.initcolor = obj.initcolor
    this.inr = obj.inr
    this.outr = obj.outr
    this.initr = obj.initr
    this.isinput = obj.isinput
    this.range = obj.range
  };
  H5lock.prototype.drawCle = function(x, y,) { // 初始化解锁密码面板
    this.drawStatusPoint(this.successcolor)
    this.ctx.fillStyle = this.initcolor;
    this.ctx.beginPath();
    this.ctx.arc(x, y, this.initr * window.devicePixelRatio, 0, Math.PI * 2, true);
    this.ctx.closePath();
    this.ctx.fill();
  }
  H5lock.prototype.drawPoint = function(color,colorout) { // 初始化外环
    for (var i = 0 ; i < this.lastPoint.length ; i++) {
      this.ctx.fillStyle = colorout;
      this.ctx.beginPath();
      this.ctx.arc(this.lastPoint[i].x, this.lastPoint[i].y, this.outr * window.devicePixelRatio, 0, Math.PI * 2, false);
      this.ctx.closePath();
      this.ctx.fill();
      this.ctx.fillStyle = color;
      this.ctx.beginPath();
      this.ctx.arc(this.lastPoint[i].x, this.lastPoint[i].y, this.inr * window.devicePixelRatio, 0, Math.PI * 2, true);
      this.ctx.closePath();
      this.ctx.fill();
      }
  }
  H5lock.prototype.drawStatusPoint = function(type) { // 初始化状态线条
    for (var i = 0 ; i < this.lastPoint.length ; i++) {
      this.ctx.strokeStyle = type;
      this.ctx.beginPath();
      this.ctx.closePath();
      // 这是内环外边框
      // this.ctx.arc(this.lastPoint[i].x - 10, this.lastPoint[i].y, 0, Math.PI * 2, true);
      // this.ctx.stroke();
    }
  }
  H5lock.prototype.drawLine = function(po,color) {// 解锁轨迹
    this.ctx.beginPath();
    this.ctx.lineWidth = this.linwidth * window.devicePixelRatio;
    this.ctx.strokeStyle = color
    this.ctx.moveTo(this.lastPoint[0].x, this.lastPoint[0].y);
    for (var i = 1 ; i < this.lastPoint.length ; i++) {
        this.ctx.lineTo(this.lastPoint[i].x, this.lastPoint[i].y);
    }
    this.ctx.lineTo(po.x, po.y);
    this.ctx.stroke();
    this.ctx.closePath();

  }
  
  H5lock.prototype.createCircle = function() {// 创建解锁点的坐标，根据canvas的大小来平均分配半径
    var n = this.chooseType;
    var count = 0;
    this.r = this.ctx.canvas.width / (2 + 7.5 * n);// 公式计算
    var r = this.r;
    for (var i = 0 ; i < n ; i++) {
      for (var j = 0 ; j < n ; j++) {
        count++;
        var obj = {
            x: j * 8 * r + 4 * r,
            y: i * 8 * r + 4 * r,
            index: count
        };
        this.arr.push(obj);
        this.restPoint.push(obj);
      }
    }
    this.ctx.clearRect(0, 0, this.ctx.canvas.width, this.ctx.canvas.height);
    for (var i = 0 ; i < this.arr.length ; i++) {
      this.drawCle(this.arr[i].x, this.arr[i].y);
    }
    //return arr;
  }
  H5lock.prototype.getPosition = function(e) {// 获取touch点相对于canvas的坐标
    var rect = e.currentTarget.getBoundingClientRect();
    var po = {
      x: (e.touches[0].clientX - rect.left) * window.devicePixelRatio,
      y: (e.touches[0].clientY - rect.top) * window.devicePixelRatio 
    };
    return po;
  }
  H5lock.prototype.update = function(po) {// 核心变换方法在touchmove时候调用
    this.ctx.clearRect(0, 0, this.ctx.canvas.width, this.ctx.canvas.height);
    for (var i = 0 ; i < this.arr.length ; i++) { // 每帧先把面板画出来
      this.drawCle(this.arr[i].x, this.arr[i].y);
    }
    this.drawPoint(this.successcolor,this.successbgcolor);// 每帧画轨迹
    this.drawLine(po ,this.successcolor);// 每帧画圆心
    console.log(window.devicePixelRatio)
    for (var i = 0 ; i < this.restPoint.length ; i++) {
      if (Math.abs(po.x - this.restPoint[i].x) < this.range * window.devicePixelRatio  && Math.abs(po.y - this.restPoint[i].y) < this.range * window.devicePixelRatio) {
        this.lastPoint.push(this.restPoint[i]);
        this.restPoint.splice(i, 1);
        break;
      }
    }
  }
  H5lock.prototype.checkPass = function(psw1, psw2) {// 检测密码
    var p1 = '',
    p2 = '';
    for (var i = 0 ; i < psw1.length ; i++) {
      p1 += psw1[i].index + psw1[i].index;
    }
    for (var i = 0 ; i < psw2.length ; i++) {
      p2 += psw2[i].index + psw2[i].index;
    }
    return p1 === p2;
  }
  H5lock.prototype.storePass = function(psw) {// touchend结束之后对密码和状态的处理
      const password = []
      psw.forEach(item=>{
        password.push(item.index)
      })
      console.log(password)
      if (this.pswObj.step == 1) {
          if (this.checkPass(this.pswObj.fpassword, psw)) {
            this.ctx.clearRect(0, 0, this.ctx.canvas.width, this.ctx.canvas.height);
            for (var i = 0 ; i < this.arr.length ; i++) { // 每帧先把面板画出来
                this.drawCle(this.arr[i].x, this.arr[i].y);
            }
            this.drawPoint(this.successcolor,this.successbgcolor)
            this.drawLine( this.lastPoint,this.successcolor);// 每帧画圆心
              this.pswObj.step = 2;
              this.pswObj.spassword = psw;
              document.getElementById('title').innerHTML = '密码设置成功';
              // 跳转至主页面
              if(this.isinput) {
                setTimeout(() => {
                  document.getElementById('inputpassword').click()
                }, 500);
              } else {
              // NEXTTODO
              setTimeout(() => {
                document.getElementById('comeback').click()
              }, 500);
            }
              PublicLib.putCookieInfo('passwordxx', JSON.stringify(this.pswObj.spassword));
              PublicLib.putCookieInfo('chooseType', this.chooseType);
              PublicLib.putCookieInfo('step', 2);
          } else {
              this.ctx.clearRect(0, 0, this.ctx.canvas.width, this.ctx.canvas.height);
              for (var i = 0 ; i < this.arr.length ; i++) { // 每帧先把面板画出来
                  this.drawCle(this.arr[i].x, this.arr[i].y);
              }
              document.getElementById('title').innerHTML = '两次不一致，重新输入';
              // this.drawStatusPoint('#FF574D');
              this.drawPoint(this.wariningcolor,this.wariningbgcolor)
              this.drawLine( this.lastPoint,this.wariningcolor);// 每帧画圆心

              delete this.pswObj.step;
          }
      } else if (this.pswObj.step == 2) {
          if (this.checkPass(this.pswObj.spassword, psw)) {
              this.ctx.clearRect(0, 0, this.ctx.canvas.width, this.ctx.canvas.height);
              for (var i = 0 ; i < this.arr.length ; i++) { // 每帧先把面板画出来
                  this.drawCle(this.arr[i].x, this.arr[i].y);
              }
              this.drawPoint(this.successcolor,this.successbgcolor)
              this.drawLine( this.lastPoint,this.successcolor);// 每帧画圆心
              document.getElementById('title').innerHTML = '解锁成功';
              setTimeout(() => {
                  document.getElementById('goon').click()
              }, 500);
          } else {
              this.ctx.clearRect(0, 0, this.ctx.canvas.width, this.ctx.canvas.height);
              for (var i = 0 ; i < this.arr.length ; i++) { // 每帧先把面板画出来
                  this.drawCle(this.arr[i].x, this.arr[i].y);
              }
              this.drawPoint(this.wariningcolor,this.wariningbgcolor)
              this.drawLine( this.lastPoint,this.wariningcolor);// 每帧画圆心
              document.getElementById('title').innerHTML = '解锁失败,请重新尝试';
          }
      } else {
        this.ctx.clearRect(0, 0, this.ctx.canvas.width, this.ctx.canvas.height);
        for (var i = 0 ; i < this.arr.length ; i++) { // 每帧先把面板画出来
            this.drawCle(this.arr[i].x, this.arr[i].y);
        }
          if(psw.length < 4) {
              this.drawPoint(this.wariningcolor,this.wariningbgcolor)
              this.drawLine( this.lastPoint,this.wariningcolor);// 每帧画圆心
              document.getElementById('title').innerHTML = '密码长度不够，请重新输入';
              return;
          }
          this.drawPoint(this.successcolor,this.successbgcolor)
          this.drawLine( this.lastPoint,this.successcolor);// 每帧画圆心
          this.pswObj.step = 1;
          this.pswObj.fpassword = psw;
          document.getElementById('title').innerHTML = '再次输入';
      }

  }
  H5lock.prototype.makeState = function() {
  }
  H5lock.prototype.setChooseType = function(type){
      chooseType = type;
      init();
  }
  H5lock.prototype.updatePassword = function(){
      PublicLib.putCookieInfo('passwordxx','');
      PublicLib.putCookieInfo('chooseType','');
      PublicLib.putCookieInfo('step','');
      this.pswObj = {};
      document.getElementById('title').innerHTML = '为了保护您的隐私，请设置登录手势密码吧！';
      this.reset();
  }
  H5lock.prototype.initDom = function(){
      var wrap = document.createElement('div');
      if(PublicLib.getCookieInfo('step') === '2') {
        var str = '<div id="title">请输入手势密码</div>'+
                '<canvas id="canvas" style="display: inline-block;"></canvas>'+
                '<div class="bottomtext">至少连接4个点</div>'+
                '<div id="updatePassword"></div>';
        wrap.setAttribute('style','position: absolute; left:0;right:0;');
        wrap.setAttribute('class','gesturepassword');
        wrap.innerHTML = str;
        document.body.appendChild(wrap);
      } else {
        var str = '<div id="title">为了保护您的隐私，请设置登录手势密码吧！</div>'+
                  '<canvas id="canvas"style="display: inline-block;"></canvas>'+
                  '<div class="bottomtext">至少连接4个点</div>'+
                  '<div id="updatePassword"></div>';
        wrap.setAttribute('style','position: absolute; left:0;right:0;');
        wrap.setAttribute('class','gesturepassword');
        wrap.innerHTML = str;
        document.body.appendChild(wrap);
      }
      var canvas=document.getElementById('canvas');    
      canvas.width=canvas.clientWidth*window.devicePixelRatio;
      canvas.height=canvas.clientHeight*window.devicePixelRatio;
  } 

  H5lock.prototype.init = function() {
      this.initDom();
      this.pswObj = PublicLib.getCookieInfo('passwordxx') ? {
          step: 2,
          spassword: JSON.parse(PublicLib.getCookieInfo('passwordxx'))
      } : {};
      this.lastPoint = [];
      this.makeState();
      this.touchFlag = false;
      this.canvas = document.getElementById('canvas');
      this.ctx = this.canvas.getContext('2d');
      this.lastPoint = [];
      this.arr = [];
      this.restPoint = [];
      this.createCircle();
      this.bindEvent();
  }
  H5lock.prototype.reset = function() {
      this.makeState();
      this.lastPoint = [];
      this.arr = [];
      this.restPoint = [];
      this.createCircle();
  }
  H5lock.prototype.bindEvent = function() {
      var self = this;
      this.canvas.addEventListener("touchstart", function (e) {
          e.preventDefault();// 某些android 的 touchmove不宜触发 所以增加此行代码
            var po = self.getPosition(e);
            for (var i = 0 ; i < self.arr.length ; i++) {
              if (Math.abs(po.x - self.arr[i].x) < self.r && Math.abs(po.y - self.arr[i].y) < self.r) {

                  self.touchFlag = true;
                  self.drawPoint(self.arr[i].x,self.arr[i].y);
                  self.lastPoint.push(self.arr[i]);
                  self.restPoint.splice(i,1);
                  break;
              }
            }
        }, { passive: false });
        this.canvas.addEventListener("touchmove", function (e) {
          if (self.touchFlag) {
              self.update(self.getPosition(e));
          }
        },  false );
        this.canvas.addEventListener("touchend", function (e) {
            if (self.touchFlag) {
                self.touchFlag = false;
                self.storePass(self.lastPoint);
                setTimeout(function(){

                  self.reset();
              }, 
              700);
            }
        }, false);
        document.addEventListener('touchmove', function(e){
          e.preventDefault();
        },{ passive: false });
        document.getElementById('updatePassword').addEventListener('click', function(){
            self.updatePassword();
        });
  }
})();