vue_elementui拖住滑块拼图验证代码
vue拖住滑块拼图验证，以下是cavas直接写的滑块拼图验证码，直接复制引用即可
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<template>
<div id="puzzle" ref="puzzle" style="display:inline-block;">
<!-- :style="'padding:' + 16*scale + 'px ' + 16*scale + 'px ' + 28*scale + 'px;border-radius:'+16*scale+'px;'" -->
<div class="puzzle-container"
>
<div :style="'position:relative;overflow:hidden;width:'+ dataWidth +'px;'">
<div :style="'position:relative;width:' + dataWidth + 'px;height:' + dataHeight + 'px;'">
<img
id="scream"
ref="scream"
:src="imgRandom"
:style="'width:' + dataWidth + 'px;height:' + dataHeight + 'px;'"
/>
<canvas id="puzzle-box" ref="puzzleBox" :width="dataWidth" :height="dataHeight"></canvas>
</div>
<div
class="puzzle-lost-box"
:style="'left:' + left_Num + 'px;width:' + dataWidth + 'px;height:' + dataHeight + 'px;'"
>
<canvas id="puzzle-shadow" ref="puzzleShadow" :width="dataWidth" :height="dataHeight"></canvas>
<canvas id="puzzle-lost" ref="puzzleLost" :width="dataWidth" :height="dataHeight"></canvas>
</div>
<p
class="ver-tips"
ref="verTips"
:style="'height: '+22*scale+'px;line-height:'+22*scale+'px;bottom: ' + (displayTips==true ? 0 : -22*scale ) +'px;font-size: '+12*scale+'px;'"
>
<template v-if="verification">
<span :style="'color:#42ca6b;line-height:'+ 22*scale+'px;'">验证通过</span>
<span :style="'margin-left:'+4*scale+'px;line-height:'+ 22*scale+'px;'">哇喔,怪物吃了拼图,快去登录吧~</span>
</template>
<template v-if="!verification">
<span :style="'color:red;line-height:'+22*scale+'px;'">验证失败:</span>
<span :style="'margin-left:'+4*scale+'px;line-height:'+ 22*scale+'px;'">拖动滑块将悬浮图像正确拼合</span>
</template>
</p>
</div>
<div
class="re-btn"
@click="refreshImg"
:style="'height: '+28*scale+'px;padding: '+1*scale+'px '+16*scale+'px;font-size: '+18*scale+'px;'"
>
<a-icon type="redo" />
</div>
</div>
<br />
<div class="slider-container" :style="'width:' + dataWidth + 'px;'">
<div class="slider-bar" :style="'border-radius:'+ 24*scale+'px;'">
<p
class="slider-bar-text select-none"
onselectstart="return false"
:style="'line-height:' + 28*scale + 'px;font-size:'+12*scale+'px;'"
>按住滑块， 拖动完成上方拼图</p>
</div>
<div
class="slider-btn"
ref="sliderBtn"
@mousedown="startMove"
@touchstart="startMove"
:style="'top: '+ -7*scale + 'px;'"
>
<a-icon
type="pause-circle"
theme="twoTone"
twoToneColor="#52c41a"
:style="'font-size: '+44*scale+'px;'"
/>
<span class="slider-center-zzz">▍▍▍</span>
</div>
</div>
</div>
</template>
<script lang="js">
export default {
name: 'puzzle',
data () {
return {
moveStart: '',
displayTips: false,
verification: false,
randomX: null,
randomY: null,
imgRandom: '',
left_Num: 0,
dataWidth: 404,
dataHeight: 90,
puzzleSize: 100,
deviation: 11,
scale: 1,
reTimer: null,
isleavePage: false
}
},
props: {
width: {
type: [String, Number],
default: 340
},
height: {
type: [String, Number],
default: 120
},
cropImage: {
type: [Boolean],
default: false
},
puzzleImgList: {
type: Array,
default: () => [
'../../../static/img/a.png',
]
},
PlSize: {
type: [String, Number],
default: 48
},
Deviation:{
type: [String, Number],
default: 4
},
padding: {
type: [Number],
default: 20
},
onSuccess: {
type: Function,
default: () => {
alert('验证成功')
}
},
onError: {
type: Function,
default: () => {
alert('验证失败')
}
}
},
methods: {
/* 刷新 */
RandomNum(Min, Max) {
let Range = Max - Min + 1
let Rand = Math.random()
return Min + Math.floor(Rand * Range)
},
refreshImg () {
let imgRandomNum = this.RandomNum(0, this.puzzleImgList.length-1)
this.imgRandom = this.puzzleImgList[imgRandomNum]
this.initCanvas()
},
/* 画布初始化 */
initCanvas () {
this.clearCanvas()
// let self = this
let w = this.dataWidth
let h = this.dataHeight
// let PL_Size = 48
// 2019-02-12开始PL_Size使用可传递参数
let PL_Size = this.puzzleSize
let padding = 20
let MinN_X = padding + PL_Size
let MaxN_X = w - padding - PL_Size - PL_Size / 6
let MaxN_Y = padding
let MinN_Y = h - padding - PL_Size - PL_Size / 6
this.randomX = this.RandomNum(MinN_X, MaxN_X)
this.randomY = this.RandomNum(MinN_Y, MaxN_Y)
let X = this.randomX
let Y = this.randomY
this.left_Num = -X + 10
let d = PL_Size / 3
let c = this.$refs.puzzleBox
let c_l = this.$refs.puzzleLost
let c_s = this.$refs.puzzleShadow
let ctx = c.getContext('2d')
let ctx_l = c_l.getContext('2d')
let ctx_s = c_s.getContext('2d')
ctx.globalCompositeOperation = 'xor'
ctx.shadowBlur = 10
ctx.shadowColor = '#fff'
ctx.shadowOffsetX = 3
ctx.shadowOffsetY = 3
ctx.fillStyle = 'rgba(0,0,0,0.7)'
ctx.beginPath()
ctx.lineWidth = '1'
ctx.strokeStyle = 'rgba(0,0,0,0)'
ctx.moveTo(X, Y)
ctx.lineTo(X + d, Y)
ctx.bezierCurveTo(X + d, Y - d, X + 2 * d, Y - d, X + 2 * d, Y)
ctx.lineTo(X + 3 * d, Y)
ctx.lineTo(X + 3 * d, Y + d)
ctx.bezierCurveTo(X + 2 * d, Y + d, X + 2 * d, Y + 2 * d, X + 3 * d, Y + 2 * d)
ctx.lineTo(X + 3 * d, Y + 3 * d)
ctx.lineTo(X, Y + 3 * d)
ctx.closePath()
ctx.stroke()
ctx.fill()
let img = new Image()
img.src = this.imgRandom
img.onload = function () {
ctx_l.beginPath()
ctx_l.strokeStyle = 'rgba(0,0,0,0)'
ctx_l.moveTo(X, Y)
ctx_l.lineTo(X + d, Y)
ctx_l.bezierCurveTo(X + d, Y - d, X + 2 * d, Y - d, X + 2 * d, Y)
ctx_l.lineTo(X + 3 * d, Y)
ctx_l.lineTo(X + 3 * d, Y + d)
ctx_l.bezierCurveTo(X + 2 * d, Y + d, X + 2 * d, Y + 2 * d, X + 3 * d, Y + 2 * d)
ctx_l.lineTo(X + 3 * d, Y + 3 * d)
ctx_l.lineTo(X, Y + 3 * d)
ctx_l.closePath()
ctx_l.stroke()
ctx_l.shadowBlur = 10
ctx_l.shadowColor = 'black'
ctx_l.clip()
ctx_l.drawImage(img, 0, 0, w, h)
}
ctx_s.beginPath()
ctx_s.lineWidth = '1'
ctx_s.strokeStyle = 'rgba(0,0,0,0)'
ctx_s.moveTo(X, Y)
ctx_s.lineTo(X + d, Y)
ctx_s.bezierCurveTo(X + d, Y - d, X + 2 * d, Y - d, X + 2 * d, Y)
ctx_s.lineTo(X + 3 * d, Y)
ctx_s.lineTo(X + 3 * d, Y + d)
ctx_s.bezierCurveTo(X + 2 * d, Y + d, X + 2 * d, Y + 2 * d, X + 3 * d, Y + 2 * d)
ctx_s.lineTo(X + 3 * d, Y + 3 * d)
ctx_s.lineTo(X, Y + 3 * d)
ctx_s.closePath()
ctx_s.stroke()
ctx_s.shadowBlur = 20
ctx_s.shadowColor = 'black'
ctx_s.fill()
},
/* 通过重置画布尺寸清空画布，这种方式更彻底 */
clearCanvas () {
let c = this.$refs.puzzleBox
let c_l = this.$refs.puzzleLost
let c_s = this.$refs.puzzleShadow
c.setAttribute('height', c.getAttribute('height'))
c_l.setAttribute('height', c.getAttribute('height'))
c_s.setAttribute('height', c.getAttribute('height'))
// c.height = c.height
// c_l.height = c_l.height
// c_s.height = c_s.height
},
/* 按住滑块后初始化移动监听，记录初始位置 */
startMove (e) {
console.log(e)
e = e || window.event
this.$refs.sliderBtn.style.backgroundPosition = '0 -216px'
this.moveStart = e.pageX || e.targetTouches[0].pageX
this.addMouseMoveListener()
},
/* 滑块移动 */
moving (e) {
let self = this
e = e || window.event
let moveX = e.pageX || e.targetTouches[0].pageX
let d = moveX - self.moveStart
let w = self.dataWidth
let PL_Size = this.puzzleSize
let padding = 20
if (self.moveStart === '') {
return ''
}
if (d < 0 || d > (w - padding - PL_Size)) {
return ''
}
self.$refs.sliderBtn.style.left = d + 'px'
self.$refs.sliderBtn.style.transition = 'inherit'
self.$refs.puzzleLost.style.left = d + 'px'
self.$refs.puzzleLost.style.transition = 'inherit'
self.$refs.puzzleShadow.style.left = d + 'px'
self.$refs.puzzleShadow.style.transition = 'inherit'
},
/* 移动结束，验证并回调 */
moveEnd (e) {
let self = this
e = e || window.event
let moveEnd_X = (e.pageX || e.changedTouches[0].pageX) - self.moveStart
let ver_Num = self.randomX - 10
let deviation = this.deviation
let Min_left = ver_Num - deviation
let Max_left = ver_Num + deviation
if (self.moveStart !== '') {
if (Max_left > moveEnd_X && moveEnd_X > Min_left) {
self.displayTips = true
self.verification = true
setTimeout(function () {
if(self.isleavePage){
return
}
self.displayTips = false
self.initCanvas()
}, 2000)
/* 成功的回调函数 */
self.onSuccess()
} else {
self.displayTips = true
self.verification = false
setTimeout(function () {
if(self.isleavePage){
return
}
self.displayTips = false
}, 2000)
/* 失败的回调函数 */
self.onError()
}
}
if (typeof(self.$refs.sliderBtn) !== 'undefined' && typeof (self.$refs.puzzleLost) !== 'undefined' && typeof (self.$refs.puzzleShadow) !== 'undefined') {
self.reTimer = setTimeout(function () {
if(self.isleavePage){
return
}
self.$refs.sliderBtn.style.left = 0
self.$refs.sliderBtn.style.transition = 'left 0.5s'
self.$refs.puzzleLost.style.left = 0
self.$refs.puzzleLost.style.transition = 'left 0.5s'
self.$refs.puzzleShadow.style.left = 0
self.$refs.puzzleShadow.style.transition = 'left 0.5s'
}, 1000)
self.$refs.sliderBtn.style.backgroundPosition = '0 -84px'
}
self.moveStart = ''
},
/* 绑定滑块移动与滑动结束，移动过程中鼠标可在绑定的区域 */
addMouseMoveListener () {
let self = this
document.addEventListener('mousemove', self.moving)
document.addEventListener('touchmove', self.moving)
document.addEventListener('mouseup', self.moveEnd)
document.addEventListener('touchend', self.moveEnd)
}
},
mounted () {
let self = this
this.dataWidth = this.$refs.puzzle.clientWidth*0.884
this.dataHeight = this.dataWidth*(this.height/this.width)
this.scale = this.$refs.puzzle.clientWidth/260
this.puzzleSize = this.dataWidth*(this.PlSize/this.width)
setTimeout(self.refreshImg,0)
},
created () {
let imgRandomNum = this.RandomNum(0, this.puzzleImgList.length - 1)
this.imgRandom = this.puzzleImgList[imgRandomNum]
this.puzzleSize = Number(this.PlSize)
this.deviation = Number(this.Deviation)
// this.dataWidth = this.width
// this.dataHeight = this.height
// this.scale = this.width/260
},
watch: {
},
beforeDestroy() {
this.isleavePage = true
}
}
</script>
<style scoped>
.slider-btn {
position: absolute;
width: 90px;
height: 67px;
left: 0;
top: -7px;
z-index: 12;
cursor: pointer;
background-position: 0 -84px;
transition: inherit;
background-color: #f4f7fe;
border-radius: 45%;
display: flex;
}
.slider-center-zzz {
text-align: center;
line-height: 67px;
position: absolute;
color: #53C300;
height: 40px;
width: 100%;
}
.ver-tips {
position: absolute;
left: 0;
bottom: -22px;
background: rgba(255, 255, 255, 0.9);
height: 22px;
line-height: 22px;
font-size: 12px;
width: 100%;
margin: 0;
text-align: left;
padding: 0 8px;
transition: all 0.4s;
}
.slider-tips {
bottom: 0;
}
.ver-tips i {
display: inline-block;
width: 22px;
height: 22px;
vertical-align: top;
background-position: -4px -1229px;
}
.ver-tips span {
display: inline-block;
vertical-align: top;
line-height: 22px;
color: #455;
}
.active-tips {
display: block;
}
.hidden {
display: none;
}
.re-btn {
position: absolute;
left: 0;
bottom: 0;
height: 28px;
padding: 0 16px;
}
.re-btn a {
display: inline-block;
width: 14px;
height: 14px;
margin: 0px 0;
background-position: 0 -1179px;
cursor: pointer;
}
.re-btn a:hover {
background-position: 0 -1193px;
}
.puzzle-container {
position: relative;
/* padding: 16px 16px 28px; */
/* border: 1px solid #ddd; */
background: #e0e1e3;
/* border-radius: 16px; */
/* height: 83px; */
/* width: 340px; */
}
.slider-container {
position: relative;
margin: auto;
}
.slider-bar {
border: 1px solid #c3c3c3;
border-radius: 24px;
background: #e0e1e3;
box-shadow: 0 1px 1px rgba(12, 10, 10, 0.2) inset;
}
.slider-bar-text {
font-size: 12px;
color: #486c80;
line-height: 28px;
margin: 0;
text-align: right;
padding-right: 22px;
}
#puzzle-box {
position: absolute;
left: 0;
top: 0;
z-index: 22;
}
#puzzle-shadow {
position: absolute;
left: 0;
top: 0;
z-index: 22;
}
#puzzle-lost {
position: absolute;
left: 0;
top: 0;
z-index: 33;
}
.puzzle-lost-box {
position: absolute;
width: 260px;
height: 116px;
left: 0;
top: 0;
z-index: 111;
}
</style>
