jquery实现拖动圆圈旋钮触控按钮效果代码-html代码-BFW代码库

jquery实现拖动圆圈旋钮触控按钮效果代码

代码语言：html

所属分类：拖放

代码描述：jquery实现拖动圆圈旋钮触控按钮效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

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

<head>
    <meta charset="UTF-8">
<style>
    html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  background: #111;
}

.dial {
  position: absolute;
  width: 350px;
  height: 350px;
  display: block;
  top: 50%;
  margin-top: -175px;
  left: 50%;
  margin-left: -175px;
  cursor: pointer;
}
.dial .wrapper {
  position: absolute;
  width: 300px;
  height: 300px;
  left: 50%;
  top: 50%;
  margin-left: -150px;
  margin-top: -150px;
  border-radius: 300px;
  cursor: pointer;
  background: linear-gradient(-45deg, #171717 0%, #272727 100%);
  box-shadow: inset 0px 1px 1px 0px #999, 0px 0px 0px 4px black;
}
.dial .knob {
  position: absolute;
  width: 300px;
  height: 300px;
  left: 50%;
  top: 50%;
  margin-left: -150px;
  margin-top: -150px;
  border-radius: 300px;
  cursor: pointer;
  -webkit-user-select: none;
}
.dial .center {
  position: absolute;
  background: #c5c8b3;
  width: 100px;
  height: 100px;
  left: 50%;
  top: 50%;
  border: 6px solid #1b1c1a;
  margin-left: -56px;
  margin-top: -56px;
  border-radius: 300px;
  color: white;
  z-index: 1;
  -webkit-user-select: none;
  box-shadow: 0px 0px 2px 2px rgba(255, 255, 255, 0.08), inset 0px 0px 10px 4px #6a6c60;
}
.dial .center span {
  position: relative;
  display: block;
  top: 40px;
  width: 100px;
  text-align: center;
  font-size: 24px;
  color: #454541;
  font-weight: bold;
  text-shadow: 0px 1px 0px #eee;
}
.dial .handle {
  position: absolute;
  background: #171717;
  width: 46px;
  height: 46px;
  left: 50%;
  top: 50%;
  margin-left: -23px;
  margin-top: -112px;
  border-radius: 46px;
  box-shadow: inset 0px 0px 6px 4px #1a1a1a, 1px 1px 2px 0px rgba(255, 255, 255, 0.2), inset 1px 2px 4px 2px rgba(0, 0, 0, 0.4), inset -8px -8px 6px 1px #222222;
}
.dial .indicator {
  position: absolute;
  background: #eeeadc;
  width: 10px;
  height: 10px;
  top: 12px;
  left: 50%;
  margin-left: -6px;
  border-radius: 10px;
  box-shadow: 0px 0px 4px 1px white;
}
.dial .progress {
  position: absolute;
  width: 350px;
  height: 350px;
}
</style>

</head>

<body>

    <figure class="dial">
        <div class="center"><span>0</span></div>
        <div class="wrapper">
            <div class="knob">
                <div class="handle"></div>
                <div class="indicator"></div>
            </div>
        </div>
        <canvas class="progress"></canvas>
    </figure>
    <!-- partial -->
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/jquery-3.2.1.min.js"></script>
    <script >
        
        (function() {
    var Dial, dial;

    Dial = (function() {
        class Dial {
            constructor($context) {
                var knobOffset;

                // Callbacks
                this.onMouseDown = this.onMouseDown.bind(this);
                this.onMouseUp = this.onMouseUp.bind(this);
                this.onMouseMove = this.onMouseMove.bind(this);
                this.$context = $context;
                this.$knob = this.$context.find(".knob");
                this.$handle = this.$context.find(".handle");
                this.$progress = this.$context.find(".progress");
                this.$center = this.$context.find(".center");
                this.$textOutput = this.$center.find("span");
                this.ctx = this.$progress.get(0).getContext("2d");
                knobOffset = this.$knob.offset();
                this.elementPosition = {
                    x: knobOffset.left,
                    y: knobOffset.top
                };
                this.centerX = this.$progress.width() / 2;
                this.centerY = this.$progress.height() / 2;
                this.canvasSize = this.$progress.width();
                this.addEventListeners();
                this.draw();
                return;
            }

            addEventListeners() {
                this.$context.on("mousedown", this.onMouseDown);
                this.$context.on(&q.........完整代码请登录后点击上方下载按钮下载查看