shaogen1995
/
WuZhongBWG


			
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							<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,minimum-scale=1,user-scalable=no">
  <link rel="stylesheet" href="./css/index.css">
  <title>手写</title>
  <script type="text/javascript" src="./md5.js"></script>
  <style>
    #clear2 {
      opacity: 0;
    }

  </style>
</head>

<body>
  <div class="body">
    <!-- <img id="bg" class="bg" src="./images/bg.png" alt=""> -->
    <div class="content">
      <!-- <div class="title">搜索页面</div> -->
      <div class="input">
        <input id="input" type="text">
        <span>
          <img id="clsipt" src="./images/close.png" alt="">
        </span>
        <div id="search" class="button">搜索</div>
      </div>

      <!-- 搜索页面 -->
      <div class="search-page">
        <ul class="result">
          <li>
            <ul id="ret"></ul>
          </li>
          <li><img id="clear2" src="./images/close.png" alt=""></li>
        </ul>
        <div id="canvasWrap">
          <canvas id="cav"></canvas>
        </div>
      </div>

      <div class="result-page">
        <div class="reload">
          <img id="reload" src="./images/reload.png" alt="">
        </div>
        <ul>
        </ul>
        <div class="no-result">
          <img src="./images/no-result.png" alt="">
          <p>暂时没有结果呢，<br />请试一下其他关键字</p>
        </div>
      </div>

      <!-- <div class="cls">
        <img src="./images/cls.png" alt="">
      </div> -->

    </div>
  </div>
  <script src="./js/jquery.min.js"></script>
  <!-- <script src="./js/handwritingapi.js"></script> -->
  <script src="./js/index.js?t=20200921"></script>
  <script type="text/javascript">
    var index = 0;
    var BH = "";
    var Down = false;
    let cav = document.getElementById("cav");
    var ctx = cav.getContext("2d");
    cav.width = 900;
    cav.height = 340;
    var lastX = -1,
      lastY = -1;
    var Timer = 0;


    // 移动端禁止拉动页面
    document.body.addEventListener('touchmove', function (e) {
      e.preventDefault();
    }, {
      passive: false
    });

    // PC
    cav.addEventListener("mousedown", onStartInput);
    cav.addEventListener("mousemove", onMoveInput);
    cav.addEventListener("mouseup", onOverInput);

    // 手机
    cav.addEventListener("touchstart", onStartInput);
    cav.addEventListener("touchmove", onMoveInput);
    cav.addEventListener("touchend", onOverInput);
    cav.addEventListener("touchcancel", onOverInput);

    function onStartInput(event) {
      var event = event || window.event;

      Down = true;
      if (!event.touches) {
        // pc
        lastX = parseInt(event.offsetX);
        lastY = parseInt(event.offsetY);
      } else {
        lastX = parseInt(event.touches[0].clientX - cav.offsetLeft);
        lastY = parseInt(event.touches[0].clientY - cav.offsetTop);
      }
      // console.log("down");
    }

    function onMoveInput(event) {
      var event = event || window.event;
      if (Down) {
        var x, y;
        if (!event.touches) {
          // pc
          x = parseInt(event.offsetX);
          y = parseInt(event.offsetY);
        } else {
          x = parseInt(event.touches[0].clientX - cav.offsetLeft);
          y = parseInt(event.touches[0].clientY - cav.offsetTop);
        }
        BH += `${x},${y},`;
        renderPoint(lastX, lastY, x, y);
        lastX = x;
        lastY = y;

        // console.log("move");
      }
    }

    function onOverInput(event) {
      var event = event || window.event;
      if (Down) {
        // 加入一个笔画的结束符
        Down = false;
        BH += "-1,0,";

        if (Timer != 0)
          window.clearInterval(Timer);
        Timer = self.setInterval("hwRecognition()", 1000);

        // console.log("up");
      }
    }

    function hwRecognition() {
      var lang = 'zh-cn';

      // 识别前要加入-1-1, 结束符
      sk = BH + "-1,-1";
      window.clearInterval(Timer);
      var user = "testUser";
      var token = hex_md5(hex_md5(sk) + user.toLowerCase() + "728420db91ffc71a4784ce4cef36d63b");
      var dt = "user=" + user + "&token=" + token + "&sk=" + sk + "&lang=" + lang + "&os=Windows&multi=1&count=10";
      request(dt);
    }

    // 输入框的X按钮
    let inputX = document.querySelector('#clsipt')

    // X按钮
    let closeBtnDom = document.querySelector('#clear2')
    closeBtnDom.onclick = (() => {
      // 删除ul下面的所有子元素
      ulDom.innerHTML = ''
      // 清空写字板
      resetCtx()
      // 隐藏X按钮
      closeBtnDom.style.opacity = 0
    })


    function request(data) {
      let szURL = 'http://handwriting.dwinput.com:4555/temp/';
      var xhr = new XMLHttpRequest();
      xhr.open("POST", szURL, true);
      xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
      xhr.onreadystatechange = function () {
        if (xhr.readyState == 4 && xhr.status == 200) {
          let temp = xhr.responseText
          // 笔画太少的时候 直接return
          if (temp.includes('error')) return
          temp = temp.split('\t')
          let ul = document.querySelector('#ret')
          // 生成的子元素文字
          let liAll = ''
          temp.forEach(v => {
            liAll += `<li>${v}</li>`
            ulDom.innerHTML = liAll
          })
          // 显示X按钮
          closeBtnDom.style.opacity = 1
          // document.getElementById("ret").value = xhr.responseText; 
          //alert("识别结果：" + xhr.responseText);
        }
      }

      try {
        xhr.send(data);
      } catch (e) {
        return null;
      }
    }

    // 给生成的li文字绑定点击事件
    let ulDom = document.querySelector('#ret')
    ulDom.onclick = ((e) => {
      if (e.target.tagName === 'LI') {
        // 获取当前点击的li文本
        let txt = e.target.innerHTML
        // 加到输入框后面
        let inputDom = document.querySelector('#input')
        inputDom.value = inputDom.value + txt
        // 删除ul下面的所有子元素
        ulDom.innerHTML = ''
        // 清空写字板
        resetCtx()
        // 隐藏X按钮
        closeBtnDom.style.opacity = 0
        // 显示输入框的X按钮
        inputX.style.opacity = 1
      }
    })

    // 画线
    function renderPoint(x1, y1, x2, y2) {
      ctx.strokeStyle = '#EA9649';
      ctx.save();
      ctx.beginPath();
      ctx.lineWidth = 5;
      ctx.moveTo(x1, y1);
      ctx.lineTo(x2, y2);
      ctx.stroke();
      ctx.restore();
    }

    function resetCtx() {
      BH = "";
      ctx.clearRect(0, 0, cav.width, cav.height);
    }

  </script>
</body>

</html>