vue实现一个简单的画板功能代码-html代码-BFW代码库

代码语言：html
所属分类：其他
代码描述：vue实现一个简单的画板功能代码，可设置笔触颜色及粗细，还可撤销与保存。
代码标签： vue 画板
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">
  
<link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/ionicons.min.css">
  
<style>
@import url("https://fonts.googleapis.com/css?family=Roboto:300,400,500");
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: black;
  color: white;
}

body,
button,
input {
  font-family: "Roboto", sans-serif;
  font-size: 14px;
  font-weight: 400;
}

h1,
h2,
h3,
h4,
h5 {
  font-weight: 500;
}

.text-faded {
  opacity: 0.5;
}

.cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 3px solid #1e1e1e;
  pointer-events: none;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  mix-blend-mode: difference;
  opacity: 0;
  transition: opacity 1s;
}

canvas {
  width: 100%;
  height: calc(100vh - 60px);
  background-color: white;
  cursor: none;
}
canvas:hover + .cursor {
  opacity: 1;
}
canvas:active + .cursor {
  border-color: #3c3c3c;
}

.controls {
  position: fixed;
  z-index: 5;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background-color: #0a0a0a;
  display: flex;
  justify-content: center;
  align-items: center;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
}

.stat {
  font-size: 20px;
  margin-bottom: 15px;
}

.btn-row {
  position: relative;
  margin-bottom: 5px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  padding: 0 15px;
  border-radius: 4px;
}

.popup {
  position: absolute;
  width: 300px;
  bottom: 58px;
  padding: 30px;
  left: calc(50% - 150px);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  background-color: white;
  color: #1e1e1e;
  border-radius: 10px 10px 0 0;
  border: 1px solid gainsboro;
  border-bottom-width: 0;
  opacity: 0;
  -webkit-animation: popup 0.5s forwards cubic-bezier(0.2, 2, 0.4, 1);
          animation: popup 0.5s forwards cubic-bezier(0.2, 2, 0.4, 1);
  z-index: 2;
  overflow: hidden;
  max-height: 80vh;
  overflow-y: auto;
}
.popup .popup-title {
  flex: 0 0 100%;
  text-align: center;
  font-size: 16px;
  color: black;
  opacity: 0.5;
  margin-bottom: 10px;
}
.popup button {
  height: 80px;
  width: 80px;
  text-align: center;
  font-size: 14px;
  color: rgba(0, 0, 0, 0.4);
}
.popup button i {
  display: block;
  font-size: 30px;
  margin-bottom: 5px;
  color: rgba(0, 0, 0, 0.2);
}
.popup button.disabled {
  color: rgba(0, 0, 0, 0.2);
}
.popup button.disabled i {
  color: rgba(0, 0, 0, 0.1);
}
.popup button.active, .popup button:active {
  color: rgba(0, 0, 0, 0.4);
}
.popup button.active i, .popup button:active i {
  color: #0095ff;
}

@-webkit-keyframes popup {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes popup {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.welcome-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9;
  background-color: #0095ff;
  display: flex;
  justify-content: center;
  align-items: center;
}

.fade-up {
  opacity: 0;
  -webkit-animation: fade-up 1s forwards cubic-bezier(0.2, 2, 0.4, 1);
          animation: fade-up 1s forwards cubic-bezier(0.2, 2, 0.4, 1);
}

.btn {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 20px;
  font-weight: 400;
  font-size: 16px;
  border-radius: 4px;
  background-color: #0095ff;
  color: white;
  -webkit-animation-delay: 1s;
          animation-delay: 1s;
  transition: all 0.15s;
  cursor: pointer;
}
.btn:hover {
  background-color: #33aaff;
}

.welcome {
  width: 400px;
  height: 400px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.welcome h1.fade-up {
  font-weight: 300;
  font-size: 40px;
  -webkit-animation-delay: 0.25s;
          animation-delay: 0.25s;
}
.welcome h2.fade-up {
  font-weight: 400;
  color: rgba(255, 255, 255, 0.5);
  -webkit-animation-delay: 0.5s;
          animation-delay: 0.5s;
}
.welcome a.fade-up {
  color: rgba(255, 255, 255, 0.5);
  display: inline-block;
  margin-top: 20px;
  text-decoration: none;
  -webkit-animation-delay: 0.75s;
          animation-delay: 0.75s;
}
.welcome .btn.fade-up {
  background-color: rgba(255, 255, 255, 0.2);
  color: white;
  margin-top: 60px;
}
.welcome .btn.fade-up:hover {
  background-color: rgba(255, 255, 255, 0.3);
}

@-webkit-keyframes fade-up {
  from {
    transform: translateY(80px);
    opacity: 0;
  }
  to {
    transform: none;
    opacity: 1;
  }
}

@keyframes fade-up {
  from {
    transform: translateY(80px);
    opacity: 0;
  }
  to {
    transform: none;
    opacity: 1;
  }
}
.form {
  flex: 0 0 100%;
}
.form input {
  display: block;
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
  border: 0;
  box-shadow: 0;
  outline: 0;
  background-color: #f0f0f0;
  border-radius: 4px;
  padding: 10px 15px;
  width: 100%;
  margin-bottom: 4px;
}

button {
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
  border: 0;
  border-radius: 0;
  box-shadow: 0;
  width: 40px;
  height: 60px;
  display: inline-block;
  background-color: transparent;
  color: #8c8c8c;
  font-size: 22px;
  transition: all 0.15s;
  cursor: pointer;
  outline: 0;
  position: relative;
}
button .size-icon,
button .color-icon {
  position: absolute;
  top: 10px;
  right: 0;
}
button .color-icon {
  width: 5px;
  height: 5px;
  border-radius: 50%;
}
button .size-icon {
  font-size: 6px;
  text-align: right;
}
button:hover {
  opacity: 0.8;
}
button:active, button.active {
  color: white;
}
button.disabled {
  color: #323232;
  cursor: not-allowed;
}

.history {
  width: 30px;
  height: 30px;
  background-color: #1e1e1e;
  border-radius: 50%;
  text-align: center;
  line-height: 30px;
  font-size: 12px;
  overflow: hidden;
  color: #8c8c8c;
}

.color-item {
  position: relative;
  display: inline-block;
  cursor: pointer;
  width: 60px;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.color-item input {
  position: absolute;
  opacity: 0;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
}
.color-item input:checked + .color {
  opacity: 1;
  border: 2px solid #0095ff;
}
.color-item .color {
  display: block;
  width: 30px;
  height: 30px;
  background-color: white;
  border-radius: 50%;
}
.color-item .color:hover {
  opacity: 0.8;
}

@-webkit-keyframes pulsate {
  0%, 100% {
    transform: none;
  }
  50% {
    transform: scale(1.15);
  }
}

@keyframes pulsate {
  0%, 100% {
    transform: none;
  }
  50% {
    transform: scale(1.15);
  }
}
.size-item {
  width: 40px;
  height: 60px;
  display: inline-flex;
  position: relative;
  justify-content: center;
  align-items: center;
  vertical-align: top;
  cursor: pointer;
}
.size-item input {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  opacity: 0;
}
.size-item .size {
  background-color: #8c8c8c;
  display: inline-block;
  border-radius: 50%;
  transition: all 0.15s;
  transform: translate(-50%, -50%) scale(0.6);
  position: absolute;
  top: 50%;
  left: 50%;
}
.size-item .size:hover {
  opacity: 0.8;
}
.size-item input:checked + .size {
  background-color: #0095ff;
}

.saves {
  flex: 0 0 calc(100% + 60px);
  margin: 30px -30px -30px;
  padding: 30px;
  background-color: #f0f0f0;
  max-height: 250px;
  overflow-y: auto;
}
.saves .save-item {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
</style>

  
  
  
</head>

<body >
  <div id="draw">
	<div class="welcome-bg" v-if="popups.showWelcome">
		<div class="welcome">
			<h1 class="fade-up">Vue JS draw</h1>
			<h2 class="fade-up">
				By Lewi Hussey
			</h2>
			<a href="//twitter.com/lewitje" target="blank" title="Lewi Hussey on Twitter" class="fade-up">@lewitje</a>
			<span class="btn fade-up"
						title="Close"
						v-on:click="popups.showWelcome = false">
				Lets go
			</span>
		</div>
	</div>
	<div class="app-wrapper">
		<canvas id="canvas">
		</canvas>
		<div class="cursor" id="cursor"></div>
		<div class="controls">
			<div class="btn-row">
				<div class="history" title="history">
					{{ history.length }}
				</div>
			</div>
			<div class="btn-row">
				<button type="button"
								v-on:click="removeHistoryItem"
								v-bind:class="{ disabled: !history.length }" title="Undo">
					<i class="ion ion-reply"></i>
				</button>
				<button type="button"
								v-on:click="removeAllHistory"
								v-bind:class="{ disabled: !history.length }" title="Clear all">
					<i class="ion ion-trash-a"></i>
				</button>
			</div>
			
			<div class="btn-row">
				<button title="Brush options"
								v-on:click="popups.showOptions = !popups.showOptions">
					<i class="ion ion-android-create"></i>
				</button>
				
				<div class="popup" v-if="popups.showOptions">
					<div class="popup-title">
						Options
					</div>
					<button title="Restrict movement vertical"
									v-on:click="options.restrictY = !options.restrictY; options.restrictX = false"
									v-bind:class="{ active: options.restrictY }"
									title="Restrict vertical">
						<i class="ion ion-arrow-right-c"></i>
						Restrict vertical
					</button>
					<button title="Restrict movement horizontal"
									v-on:click="options.restrictX = !options.restrictX; options.restrictY = false"
									v-bind:class="{ active: options.restrictX }"
									title="Restrict horizontal">
						<i class="ion ion-arrow-up-c"></i>
						Restrict horizontal
					</button>
					<button type="button"
								v-on:click="simplify"
								v-bind:class=&.........完整代码请登录后点击上方下载按钮下载查看