feat(P4): precompute移植+app.js sources双向回填+回归1003/1003+验收体积/文件/data.json
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<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Aurora Admin · SignaturePad</title>
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<link rel="stylesheet" href="../.design_library/aurora-admin/colors_and_type.css" />
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<link rel="stylesheet" href="./SignaturePad.css" />
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</head>
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<body>
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<div class="aa-page">
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<h2 class="aa-h2">SignaturePad 签名板</h2>
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<p class="aa-desc">手写签名区域,支持鼠标与触屏,可撤销、清除、导出图片。</p>
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<div class="aa-demo">
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<div class="aa-sign" id="sign">
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<div class="aa-sign-pad">
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<canvas class="aa-sign-canvas" id="canvas"></canvas>
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<div class="aa-sign-placeholder" id="ph">请在此处签名</div>
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</div>
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<div class="aa-sign-actions">
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<button class="aa-btn" id="undo">撤销</button>
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<button class="aa-btn" id="clear">清除</button>
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<button class="aa-btn aa-btn--primary" id="save">保存</button>
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<span class="aa-sign-preview" id="preview"></span>
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</div>
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</div>
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</div>
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</div>
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<script>
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var canvas = document.getElementById('canvas');
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var ctx = canvas.getContext('2d');
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var ph = document.getElementById('ph');
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var preview = document.getElementById('preview');
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function fit() {
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var r = canvas.parentElement.getBoundingClientRect();
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canvas.width = r.width; canvas.height = r.height;
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}
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fit();
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window.addEventListener('resize', fit);
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var drawing = false, last = null, strokes = [], cur = [];
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function pos(e) {
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var r = canvas.getBoundingClientRect();
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return { x: (e.touches ? e.touches[0].clientX : e.clientX) - r.left, y: (e.touches ? e.touches[0].clientY : e.clientY) - r.top };
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}
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function start(e) { e.preventDefault(); drawing = true; last = pos(e); cur = [last]; strokes.push(cur); ph.style.display = 'none'; }
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function move(e) {
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if (!drawing) return; e.preventDefault();
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var p = pos(e); ctx.lineTo(p.x, p.y); ctx.stroke();
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cur.push(p);
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}
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function end() { drawing = false; last = null; }
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canvas.addEventListener('mousedown', start);
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canvas.addEventListener('mousemove', move);
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window.addEventListener('mouseup', end);
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canvas.addEventListener('touchstart', start, { passive: false });
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canvas.addEventListener('touchmove', move, { passive: false });
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window.addEventListener('touchend', end);
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document.getElementById('undo').onclick = function () {
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strokes.pop();
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redraw();
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if (!strokes.length) ph.style.display = 'flex';
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};
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document.getElementById('clear').onclick = function () { strokes = []; redraw(); ph.style.display = 'flex'; preview.textContent = ''; };
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document.getElementById('save').onclick = function () { preview.textContent = '已导出(' + canvas.width + '×' + canvas.height + ')'; };
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function redraw() {
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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ctx.strokeStyle = '#1F2329'; ctx.lineWidth = 2; ctx.lineCap = 'round'; ctx.lineJoin = 'round';
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strokes.forEach(function (s) {
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ctx.beginPath();
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s.forEach(function (p, i) { i ? ctx.lineTo(p.x, p.y) : ctx.moveTo(p.x, p.y); });
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ctx.stroke();
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});
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}
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redraw();
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</script>
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</body>
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</html>
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import React, { useRef, useState, useEffect } from 'react';
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import './SignaturePad.css';
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export default function SignaturePad() {
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const pad = useRef(null);
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const canvas = useRef(null);
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const drawing = useRef(false);
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const last = useRef(null);
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const strokes = useRef([]);
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const cur = useRef([]);
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const [hasInk, setHasInk] = useState(false);
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const [saved, setSaved] = useState('');
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const ctx = () => canvas.current.getContext('2d');
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const fit = () => {
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const r = pad.current.getBoundingClientRect();
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canvas.current.width = r.width;
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canvas.current.height = r.height;
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redraw();
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};
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const pos = (e) => {
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const r = canvas.current.getBoundingClientRect();
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const t = e.touches && e.touches[0];
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return { x: (t ? t.clientX : e.clientX) - r.left, y: (t ? t.clientY : e.clientY) - r.top };
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};
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const down = (e) => {
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e.preventDefault();
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drawing.current = true;
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last.current = pos(e);
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cur.current = [last.current];
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strokes.current.push(cur.current);
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setHasInk(true);
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};
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const move = (e) => {
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if (!drawing.current) return;
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e.preventDefault();
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const p = pos(e);
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ctx().lineTo(p.x, p.y);
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ctx().stroke();
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cur.current.push(p);
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};
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const up = () => { drawing.current = false; last.current = null; };
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const undo = () => { strokes.current.pop(); redraw(); if (!strokes.current.length) setHasInk(false); };
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const clear = () => { strokes.current = []; redraw(); setHasInk(false); setSaved(''); };
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const save = () => setSaved('已导出(' + canvas.current.width + '×' + canvas.current.height + ')');
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const redraw = () => {
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const c = canvas.current;
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const x = c.getContext('2d');
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x.clearRect(0, 0, c.width, c.height);
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x.strokeStyle = '#1F2329';
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x.lineWidth = 2;
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x.lineCap = 'round';
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x.lineJoin = 'round';
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strokes.current.forEach((s) => {
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x.beginPath();
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s.forEach((p, i) => (i ? x.lineTo(p.x, p.y) : x.moveTo(p.x, p.y)));
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x.stroke();
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});
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};
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useEffect(() => {
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fit();
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window.addEventListener('resize', fit);
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return () => window.removeEventListener('resize', fit);
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// eslint-disable-next-line
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}, []);
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return (
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<div className="aa-sign">
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<div className="aa-sign-pad" ref={pad}>
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<canvas
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ref={canvas}
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className="aa-sign-canvas"
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onMouseDown={down}
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onMouseMove={move}
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onMouseUp={up}
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onTouchStart={down}
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onTouchMove={move}
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onTouchEnd={up}
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/>
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{!hasInk && <div className="aa-sign-placeholder">请在此处签名</div>}
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</div>
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<div className="aa-sign-actions">
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<button className="aa-btn" onClick={undo}>撤销</button>
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<button className="aa-btn" onClick={clear}>清除</button>
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<button className="aa-btn aa-btn--primary" onClick={save}>保存</button>
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{saved && <span className="aa-sign-preview">{saved}</span>}
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</div>
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</div>
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);
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}
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<template>
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<div class="aa-sign">
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<div class="aa-sign-pad" ref="pad">
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<canvas ref="canvas" class="aa-sign-canvas" @mousedown="down" @mousemove="move" @mouseup="up" @touchstart="down" @touchmove="move" @touchend="up"></canvas>
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<div class="aa-sign-placeholder" v-show="!hasInk">请在此处签名</div>
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</div>
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<div class="aa-sign-actions">
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<button class="aa-btn" @click="undo">撤销</button>
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<button class="aa-btn" @click="clear">清除</button>
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<button class="aa-btn aa-btn--primary" @click="save">保存</button>
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<span class="aa-sign-preview" v-if="saved">{{ saved }}</span>
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</div>
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</div>
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</template>
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<script>
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export default {
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name: 'AaSignaturePad',
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data() {
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return { drawing: false, last: null, strokes: [], cur: [], hasInk: false, saved: '' };
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},
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mounted() { this.fit(); window.addEventListener('resize', this.fit); this.$once('hook:beforeDestroy', () => window.removeEventListener('resize', this.fit)); },
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methods: {
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fit() { var r = this.$refs.pad.getBoundingClientRect(); this.$refs.canvas.width = r.width; this.$refs.canvas.height = r.height; this.redraw(); },
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pos(e) { var r = this.$refs.canvas.getBoundingClientRect(); var t = e.touches && e.touches[0]; return { x: (t ? t.clientX : e.clientX) - r.left, y: (t ? t.clientY : e.clientY) - r.top }; },
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down(e) { e.preventDefault(); this.drawing = true; this.last = this.pos(e); this.cur = [this.last]; this.strokes.push(this.cur); this.hasInk = true; },
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move(e) { if (!this.drawing) return; e.preventDefault(); var p = this.pos(e); this.ctx().lineTo(p.x, p.y); this.ctx().stroke(); this.cur.push(p); },
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up() { this.drawing = false; this.last = null; },
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ctx() { return this.$refs.canvas.getContext('2d'); },
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undo() { this.strokes.pop(); this.redraw(); if (!this.strokes.length) this.hasInk = false; },
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clear() { this.strokes = []; this.redraw(); this.hasInk = false; this.saved = ''; },
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save() { this.saved = '已导出(' + this.$refs.canvas.width + '×' + this.$refs.canvas.height + ')'; },
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redraw() {
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var c = this.$refs.canvas, x = c.getContext('2d');
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x.clearRect(0, 0, c.width, c.height);
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x.strokeStyle = '#1F2329'; x.lineWidth = 2; x.lineCap = 'round'; x.lineJoin = 'round';
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this.strokes.forEach(function (s) {
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x.beginPath();
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s.forEach(function (p, i) { i ? x.lineTo(p.x, p.y) : x.moveTo(p.x, p.y); });
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x.stroke();
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});
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}
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}
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};
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</script>
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<style src="./SignaturePad.css"></style>
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<template>
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<div class="aa-sign">
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<div class="aa-sign-pad" ref="pad">
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<canvas ref="canvas" class="aa-sign-canvas" @mousedown="down" @mousemove="move" @mouseup="up" @touchstart="down" @touchmove="move" @touchend="up"></canvas>
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<div class="aa-sign-placeholder" v-show="!hasInk">请在此处签名</div>
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</div>
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<div class="aa-sign-actions">
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<button class="aa-btn" @click="undo">撤销</button>
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<button class="aa-btn" @click="clear">清除</button>
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<button class="aa-btn aa-btn--primary" @click="save">保存</button>
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<span class="aa-sign-preview" v-if="saved">{{ saved }}</span>
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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, onBeforeUnmount } from 'vue';
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const pad = ref(null);
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const canvas = ref(null);
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const drawing = ref(false);
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const last = ref(null);
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const strokes = ref([]);
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const cur = ref([]);
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const hasInk = ref(false);
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const saved = ref('');
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function ctx() { return canvas.value.getContext('2d'); }
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function fit() { var r = pad.value.getBoundingClientRect(); canvas.value.width = r.width; canvas.value.height = r.height; redraw(); }
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function pos(e) { var r = canvas.value.getBoundingClientRect(); var t = e.touches && e.touches[0]; return { x: (t ? t.clientX : e.clientX) - r.left, y: (t ? t.clientY : e.clientY) - r.top }; }
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function down(e) { e.preventDefault(); drawing.value = true; last.value = pos(e); cur.value = [last.value]; strokes.value.push(cur.value); hasInk.value = true; }
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function move(e) { if (!drawing.value) return; e.preventDefault(); var p = pos(e); ctx().lineTo(p.x, p.y); ctx().stroke(); cur.value.push(p); }
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function up() { drawing.value = false; last.value = null; }
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function undo() { strokes.value.pop(); redraw(); if (!strokes.value.length) hasInk.value = false; }
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function clear() { strokes.value = []; redraw(); hasInk.value = false; saved.value = ''; }
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function save() { saved.value = '已导出(' + canvas.value.width + '×' + canvas.value.height + ')'; }
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function redraw() {
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var c = canvas.value, x = c.getContext('2d');
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x.clearRect(0, 0, c.width, c.height);
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x.strokeStyle = '#1F2329'; x.lineWidth = 2; x.lineCap = 'round'; x.lineJoin = 'round';
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strokes.value.forEach(function (s) { x.beginPath(); s.forEach(function (p, i) { i ? x.lineTo(p.x, p.y) : x.moveTo(p.x, p.y); }); x.stroke(); });
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}
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onMounted(() => { fit(); window.addEventListener('resize', fit); });
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onBeforeUnmount(() => window.removeEventListener('resize', fit));
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</script>
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<style src="./SignaturePad.css"></style>
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