522 lines
12 KiB
Vue
522 lines
12 KiB
Vue
<template>
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<div v-if="visible" class="captcha-overlay">
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<div class="captcha-modal">
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<div class="captcha-header">
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<h3 class="captcha-title">安全验证</h3>
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<button class="close-btn" @click="handleClose">×</button>
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</div>
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<div class="captcha-content">
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<canvas ref="canvasRef" :width="canvasWidth" :height="canvasHeight" class="captcha-canvas"
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@click="handleCanvasClick"></canvas>
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<div class="captcha-instruction">
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<p>
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请依次点击 <span class="target-list">【{{ targetChars.join('、') }}】</span>
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</p>
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</div>
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<div class="captcha-status">
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<p v-if="errorMessage" class="error-message">{{ errorMessage }}</p>
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<p v-else-if="successMessage" class="success-message">{{ successMessage }}</p>
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<p v-else class="status-text">点击图片中的目标文字</p>
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</div>
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</div>
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<div class="captcha-footer">
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<button class="refresh-btn" @click="refreshCaptcha" :disabled="isRefreshing">
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{{ isRefreshing ? '刷新中...' : '刷新验证' }}
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</button>
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<button class="confirm-btn" :disabled="clickedList.length < 3 || !!successMessage" @click="handleConfirm">
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确认
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</button>
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</div>
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</div>
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</div>
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</template>
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<script setup>
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import { ref, onMounted, watch, nextTick } from 'vue'
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const props = defineProps({
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visible: {
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type: Boolean,
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default: false,
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},
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})
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const emit = defineEmits(['success', 'close'])
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const canvasRef = ref(null)
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const canvasWidth = 300
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const canvasHeight = 180
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const bgImgUrl = '/image/clickCaptcha.jpg' // 可替换为任意背景图
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const allChars = ['大', '数', '据', '一', '查', '风', '险', '报', '告']
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const targetChars = ref(['一', '查', '查']) // 目标点击顺序固定
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const charPositions = ref([]) // [{char, x, y, w, h}]
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const clickedIndex = ref(0)
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const errorMessage = ref('')
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const successMessage = ref('')
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const isRefreshing = ref(false)
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const clickedList = ref([]) // [{char, idx, ...}]
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let currentChars = [] // 当前乱序后的字顺序
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function randomChars(count, except = []) {
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const pool = allChars.filter(c => !except.includes(c))
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const arr = []
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while (arr.length < count) {
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const c = pool[Math.floor(Math.random() * pool.length)]
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if (!arr.includes(c)) arr.push(c)
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}
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return arr
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}
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function randomColor() {
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return (
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'#' +
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Math.floor(Math.random() * 0xffffff)
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.toString(16)
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.padStart(6, '0')
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)
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}
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function drawCaptcha() {
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const canvas = canvasRef.value
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if (!canvas) return
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const ctx = canvas.getContext('2d')
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ctx.clearRect(0, 0, canvasWidth, canvasHeight)
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// 绘制背景图
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const bg = new window.Image()
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bg.src = bgImgUrl
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bg.onload = () => {
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ctx.drawImage(bg, 0, 0, canvasWidth, canvasHeight)
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// 绘制乱序文字
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charPositions.value.forEach(pos => {
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ctx.save()
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ctx.translate(pos.x + pos.w / 2, pos.y + pos.h / 2)
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ctx.rotate(pos.angle)
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ctx.font = 'bold 28px sans-serif'
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ctx.fillStyle = pos.color
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ctx.shadowColor = '#333'
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ctx.shadowBlur = 4
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ctx.fillText(pos.char, -pos.w / 2, pos.h / 2 - 8)
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ctx.restore()
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})
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// 绘制点击顺序标签
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clickedList.value.forEach((item, i) => {
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const pos = charPositions.value[item.idx]
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if (!pos) return
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ctx.save()
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ctx.beginPath()
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ctx.arc(pos.x + pos.w / 2, pos.y + 6, 12, 0, 2 * Math.PI)
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ctx.fillStyle = '#8CC6F7'
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ctx.fill()
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ctx.font = 'bold 16px sans-serif'
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ctx.fillStyle = '#fff'
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ctx.textAlign = 'center'
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ctx.textBaseline = 'middle'
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ctx.fillText((i + 1).toString(), pos.x + pos.w / 2, pos.y + 6)
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ctx.restore()
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})
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}
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}
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function refreshCaptcha() {
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isRefreshing.value = true
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setTimeout(() => {
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generateCaptcha()
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isRefreshing.value = false
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}, 500)
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}
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function generateCaptcha() {
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// 乱序排列7个字
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const chars = [...allChars]
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for (let i = chars.length - 1; i > 0; i--) {
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const j = Math.floor(Math.random() * (i + 1))
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;[chars[i], chars[j]] = [chars[j], chars[i]]
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}
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currentChars = chars
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targetChars.value = ['一', '查', '查']
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clickedIndex.value = 0
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errorMessage.value = ''
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successMessage.value = ''
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clickedList.value = []
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// 生成每个字的坐标、角度、颜色
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charPositions.value = []
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const used = []
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chars.forEach((char, idx) => {
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let x,
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y,
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w = 36,
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h = 36,
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tryCount = 0
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do {
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x = Math.random() * (canvasWidth - w - 10) + 5
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y = Math.random() * (canvasHeight - h - 10) + 5
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tryCount++
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} while (used.some(pos => Math.abs(pos.x - x) < w && Math.abs(pos.y - y) < h) && tryCount < 20)
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used.push({ x, y })
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const angle = (Math.random() - 0.5) * 0.7
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const color = randomColor()
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charPositions.value.push({ char, x, y, w, h, idx, angle, color })
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})
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nextTick(drawCaptcha)
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}
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function handleCanvasClick(e) {
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if (successMessage.value) return
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// 适配缩放
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const rect = canvasRef.value.getBoundingClientRect()
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const scaleX = canvasWidth / rect.width
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const scaleY = canvasHeight / rect.height
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const x = (e.clientX - rect.left) * scaleX
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const y = (e.clientY - rect.top) * scaleY
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// 找到被点中的字
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const posIdx = charPositions.value.findIndex(
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pos => x >= pos.x && x <= pos.x + pos.w && y >= pos.y && y <= pos.y + pos.h
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)
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if (posIdx === -1) {
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errorMessage.value = '请点击目标文字'
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setTimeout(() => (errorMessage.value = ''), 1200)
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return
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}
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// 已经点过不能重复点
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if (clickedList.value.some(item => item.idx === posIdx)) return
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if (clickedList.value.length >= charPositions.value.length) return
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clickedList.value.push({ char: charPositions.value[posIdx].char, idx: posIdx })
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drawCaptcha()
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}
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function handleConfirm() {
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if (clickedList.value.length < 3) {
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errorMessage.value = '请依次点击3个字'
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setTimeout(() => (errorMessage.value = ''), 1200)
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return
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}
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const userSeq = clickedList.value
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.slice(0, 3)
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.map(item => item.char)
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.join('')
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if (userSeq === '真爱查') {
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successMessage.value = '验证成功！'
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setTimeout(() => emit('success'), 600)
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} else {
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errorMessage.value = '校验错误，请重试'
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setTimeout(() => {
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errorMessage.value = ''
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clickedList.value = []
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// 失败时重新打乱
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generateCaptcha()
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}, 1200)
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}
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}
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function handleClose() {
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emit('close')
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}
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onMounted(() => {
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if (props.visible) generateCaptcha()
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})
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watch(
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() => props.visible,
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v => {
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if (v) generateCaptcha()
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}
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)
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</script>
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<style scoped>
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.captcha-overlay {
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position: fixed;
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top: 0;
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left: 0;
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right: 0;
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bottom: 0;
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background: rgba(0, 0, 0, 0.6);
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display: flex;
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align-items: center;
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justify-content: center;
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z-index: 9999;
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padding: 1rem;
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backdrop-filter: blur(4px);
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animation: fadeIn 0.2s ease-out;
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}
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@keyframes fadeIn {
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from {
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opacity: 0;
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}
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to {
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opacity: 1;
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}
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}
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.captcha-modal {
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background: #fff;
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border-radius: 1rem;
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width: 100%;
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max-width: 360px;
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box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
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overflow: hidden;
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animation: slideUp 0.3s ease-out;
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}
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@keyframes slideUp {
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from {
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transform: translateY(20px);
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opacity: 0;
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}
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to {
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transform: translateY(0);
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opacity: 1;
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}
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}
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.captcha-header {
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display: flex;
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justify-content: space-between;
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align-items: center;
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padding: 1.25rem 1.5rem;
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border-bottom: 1px solid var(--color-border-primary, #ebedf0);
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background: linear-gradient(135deg, var(--color-primary-light, rgba(140, 198, 247, 0.1)), #ffffff);
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}
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.captcha-title {
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font-size: 1.125rem;
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font-weight: 600;
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color: var(--color-text-primary, #323233);
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margin: 0;
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background: linear-gradient(135deg, var(--color-primary, #8CC6F7), var(--color-primary-600, #709ec6));
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-webkit-background-clip: text;
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-webkit-text-fill-color: transparent;
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background-clip: text;
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}
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.close-btn {
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background: rgba(0, 0, 0, 0.05);
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border: none;
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font-size: 1.5rem;
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color: var(--color-text-secondary, #646566);
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cursor: pointer;
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padding: 0.375rem;
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width: 32px;
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height: 32px;
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border-radius: 0.5rem;
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display: flex;
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align-items: center;
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justify-content: center;
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transition: all 0.2s ease;
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line-height: 1;
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}
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.close-btn:hover {
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color: var(--color-text-primary, #323233);
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background: rgba(0, 0, 0, 0.1);
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transform: rotate(90deg);
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}
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.captcha-content {
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padding: 1.5rem 1.5rem 1rem 1.5rem;
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background: #ffffff;
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}
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.captcha-canvas {
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width: 100%;
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border-radius: 0.75rem;
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background: var(--color-bg-tertiary, #f8f8f8);
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display: block;
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margin: 0 auto;
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border: 2px solid var(--color-border-primary, #ebedf0);
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transition: all 0.2s ease;
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cursor: pointer;
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}
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.captcha-canvas:hover {
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border-color: var(--color-primary, #8CC6F7);
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box-shadow: 0 0 0 3px var(--color-primary-light, rgba(140, 198, 247, 0.1));
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}
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.captcha-instruction {
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margin: 1.25rem 0 0.75rem 0;
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text-align: center;
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}
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.captcha-instruction p {
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font-size: 0.95rem;
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color: var(--color-text-secondary, #646566);
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margin: 0;
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line-height: 1.5;
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}
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.target-list {
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color: var(--color-primary, #8CC6F7);
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font-weight: 600;
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font-size: 1.05rem;
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padding: 0.25rem 0.5rem;
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background: var(--color-primary-light, rgba(140, 198, 247, 0.1));
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border-radius: 0.375rem;
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display: inline-block;
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}
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.captcha-status {
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text-align: center;
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min-height: 1.75rem;
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margin-top: 0.5rem;
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}
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.error-message {
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color: var(--color-danger, #ee0a24);
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font-size: 0.875rem;
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margin: 0;
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padding: 0.5rem;
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background: rgba(238, 10, 36, 0.1);
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border-radius: 0.5rem;
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animation: shake 0.3s ease-in-out;
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}
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@keyframes shake {
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0%,
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100% {
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transform: translateX(0);
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}
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25% {
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transform: translateX(-5px);
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}
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75% {
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transform: translateX(5px);
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}
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}
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.success-message {
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color: var(--color-success, #07c160);
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font-size: 0.875rem;
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margin: 0;
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padding: 0.5rem;
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background: rgba(7, 193, 96, 0.1);
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border-radius: 0.5rem;
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animation: bounce 0.4s ease-out;
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}
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@keyframes bounce {
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0%,
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100% {
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transform: translateY(0);
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}
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50% {
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transform: translateY(-3px);
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}
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}
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.status-text {
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color: var(--color-text-tertiary, #969799);
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font-size: 0.875rem;
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margin: 0;
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}
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.captcha-footer {
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padding: 1.25rem 1.5rem;
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border-top: 1px solid var(--color-border-primary, #ebedf0);
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background: var(--color-bg-secondary, #fafafa);
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display: flex;
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flex-direction: column;
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gap: 0.75rem;
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}
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.refresh-btn {
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width: 100%;
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padding: 0.875rem;
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background: var(--color-primary, #8CC6F7);
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color: white;
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border: none;
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border-radius: 0.625rem;
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font-size: 0.95rem;
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font-weight: 500;
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cursor: pointer;
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transition: all 0.2s ease;
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box-shadow: 0 2px 8px rgba(140, 198, 247, 0.3);
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}
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.refresh-btn:hover:not(:disabled) {
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background: var(--color-primary-dark, rgba(140, 198, 247, 0.8));
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transform: translateY(-1px);
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box-shadow: 0 4px 12px rgba(140, 198, 247, 0.4);
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}
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.refresh-btn:active:not(:disabled) {
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transform: translateY(0);
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}
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.refresh-btn:disabled {
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background: var(--color-text-disabled, #c8c9cc);
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cursor: not-allowed;
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box-shadow: none;
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}
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.confirm-btn {
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width: 100%;
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padding: 0.875rem;
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background: var(--color-success, #07c160);
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color: white;
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border: none;
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border-radius: 0.625rem;
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font-size: 0.95rem;
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font-weight: 500;
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cursor: pointer;
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transition: all 0.2s ease;
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box-shadow: 0 2px 8px rgba(7, 193, 96, 0.3);
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}
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.confirm-btn:hover:not(:disabled) {
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background: rgba(7, 193, 96, 0.9);
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transform: translateY(-1px);
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box-shadow: 0 4px 12px rgba(7, 193, 96, 0.4);
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}
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.confirm-btn:active:not(:disabled) {
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transform: translateY(0);
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}
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.confirm-btn:disabled {
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background: var(--color-text-disabled, #c8c9cc);
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cursor: not-allowed;
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box-shadow: none;
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}
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@media (max-width: 480px) {
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.captcha-overlay {
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padding: 0.75rem;
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}
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.captcha-modal {
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max-width: 100%;
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border-radius: 0.875rem;
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}
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.captcha-header {
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padding: 1rem 1.25rem;
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}
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.captcha-content {
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padding: 1.25rem 1.25rem 0.875rem 1.25rem;
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}
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.captcha-canvas {
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min-height: 140px;
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}
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.captcha-footer {
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padding: 1rem 1.25rem;
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}
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.captcha-instruction p {
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font-size: 0.875rem;
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}
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}
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</style>
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