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| <!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>图片公式识别系统</title>
<!-- 引入 KaTeX 数学公式渲染 -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">
<style>
:root {
--primary-color: #2196F3;
--success-color: #4CAF50;
--error-color: #f44336;
--border-radius: 8px;
}
body {
font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
max-width: 800px;
margin: 2rem auto;
padding: 0 1rem;
line-height: 1.6;
color: #333;
}
.container {
background: #fff;
padding: 2rem;
border-radius: var(--border-radius);
box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}
#dropzone {
border: 2px dashed #ccc;
border-radius: var(--border-radius);
padding: 3rem 1rem;
text-align: center;
transition: all 0.3s ease;
background: #f8f9fa;
cursor: pointer;
position: relative;
min-height: 200px;
display: flex;
align-items: center;
justify-content: center;
}
#dropzone:hover,
#dropzone.dragover {
border-color: var(--primary-color);
background: rgba(33, 150, 243, 0.05);
}
.upload-icon {
font-size: 3rem;
color: var(--primary-color);
margin-bottom: 1rem;
}
.result-card {
margin-top: 2rem;
padding: 1.5rem;
border-radius: var(--border-radius);
background: #f8f9fa;
display: none;
}
.result-title {
margin: 0 0 1rem;
color: var(--primary-color);
font-size: 1.2rem;
}
.latex-output {
font-size: 1.4rem;
padding: 1rem;
background: white;
border-radius: 4px;
text-align: center;
overflow-x: auto;
}
.confidence {
margin-top: 1rem;
color: #666;
font-size: 0.9rem;
}
.called-today {
margin-top: 1rem;
color: #666;
font-size: 0.9rem;
}
.loading {
display: none;
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: rgba(255, 255, 255, 0.9);
align-items: center;
justify-content: center;
flex-direction: column;
}
.spinner {
width: 40px;
height: 40px;
border: 4px solid #f3f3f3;
border-top: 4px solid var(--primary-color);
border-radius: 50%;
animation: spin 1s linear infinite;
}
@keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
.error-message {
color: var(--error-color);
padding: 1rem;
margin-top: 1rem;
border-radius: 4px;
background: #ffe6e6;
display: none;
}
.latex-source-card {
margin-top: 1.5rem;
border: 1px solid #e0e0e0;
border-radius: 8px;
overflow: hidden;
}
.source-header {
display: flex;
justify-content: space-between;
align-items: center;
padding: 12px;
background: #f5f5f5;
border-bottom: 1px solid #e0e0e0;
}
.latex-raw {
padding: 1rem;
margin: 0;
background: white;
font-family: 'Courier New', monospace;
white-space: pre-wrap;
word-break: break-all;
max-height: 200px;
overflow-y: auto;
}
.copy-button {
background: var(--primary-color);
color: white;
border: none;
padding: 6px 12px;
border-radius: 4px;
cursor: pointer;
transition: background 0.2s;
}
.copy-button:hover {
background: #1976d2;
}
.copy-button.copied {
background: var(--success-color);
}
</style>
</head>
<body>
<div class="container">
<h1>图片公式识别系统</h1> <div id="dropzone">
<div class="upload-icon">📷</div>
<div>
<p>直接粘贴图片（Ctrl+V）或点击选择文件</p>
<p class="text-muted">支持 PNG/JPG 格式，建议公式图片尺寸小于 2000px</p>
</div>
<div class="loading">
<div class="spinner"></div>
<p>正在识别中...</p>
</div>
</div> <input type="file" id="fileInput" hidden accept="image/*"> <div class="result-card">
<h3 class="result-title">识别结果</h3>
<div class="latex-output"></div>
<div class="latex-source-card">
<div class="source-header">
<span>LaTeX 源代码</span>
<button class="copy-button" onclick="copyLatex()">
📋 复制
</button>
</div>
<pre class="latex-raw" id="latexRaw"></pre>
</div>
<div class="confidence">置信度: <span class="confidence-value"></span></div>
<div class="called-today">今日调用: <span class="called-today-value"></span></div>
</div> <div class="error-message"></div>
</div> <script src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js"></script>
<script>
const dropzone = document.getElementById('dropzone');
const fileInput = document.getElementById('fileInput');
const BASE_URL = 'https://your_link';
// 粘贴事件处理
document.addEventListener('paste', handleImage);
// 点击事件处理
dropzone.addEventListener('click', () => fileInput.click());
// 文件选择事件
fileInput.addEventListener('change', (e) => {
if (e.target.files[0]) handleImage(e.target.files[0]);
});
async function handleImage(event) {
let blob;
if (event instanceof ClipboardEvent) {
const items = event.clipboardData.items;
for (let item of items) {
if (item.type.startsWith('image')) {
blob = item.getAsFile();
break;
}
}
} else {
blob = event;
}
if (!blob) return;
showLoading(true);
clearError();
try {
const formData = new FormData();
formData.append('image', blob, 'pasted-image.png');
const response = await fetch(`${BASE_URL}/upload`, {
method: 'POST',
body: formData,
mode: 'cors'
});
if (!response.ok) throw new Error(`HTTP 错误! 状态码: ${response.status}`);
const { result, error } = await response.json();
if (error) throw new Error(error);
if (!result.latex) throw new Error('未能识别到公式');
showResult(result);
} catch (error) {
showError(error.message);
} finally {
showLoading(false);
}
}
function showResult({ latex, conf, call_num }) {
const resultCard = document.querySelector('.result-card');
const latexOutput = document.querySelector('.latex-output');
const confidenceValue = document.querySelector('.confidence-value');
const callnumValue = document.querySelector('.called-today-value');
const latexRaw = document.getElementById('latexRaw');
try {
// 渲染公式
katex.render(latex, latexOutput, {
throwOnError: false,
displayMode: true
});
// 显示原始代码（处理转义字符）
const cleanedLatex = latex.replace(/\\\\/g, '\\');
latexRaw.textContent = cleanedLatex;
latexRaw.dataset.raw = cleanedLatex; // 存储原始数据
} catch (e) {
latexOutput.textContent = latex;
}
confidenceValue.textContent = (conf * 100).toFixed(1) + '%';
callnumValue.textContent = call_num;
resultCard.style.display = 'block';
}
function showLoading(show) {
dropzone.querySelector('.loading').style.display = show ? 'flex' : 'none';
}
function showError(message) {
const errorEl = document.querySelector('.error-message');
errorEl.textContent = `错误: ${message}`;
errorEl.style.display = 'block';
}
function clearError() {
document.querySelector('.error-message').style.display = 'none';
}
function copyLatex() {
const button = document.querySelector('.copy-button');
const raw = document.getElementById('latexRaw').dataset.raw;
navigator.clipboard.writeText(raw).then(() => {
button.classList.add('copied');
button.textContent = '✅ 已复制';
setTimeout(() => {
button.classList.remove('copied');
button.textContent = '📋 复制';
}, 2000);
}).catch(err => {
console.error('复制失败:', err);
alert('自动复制失败，请手动选择文本复制');
});
}
// 新增双击复制功能
document.getElementById('latexRaw').addEventListener('dblclick', copyLatex);
</script>
</body>
</html>
|
