forked from lab/libre-marker
212 lines
7.2 KiB
HTML
212 lines
7.2 KiB
HTML
<!DOCTYPE html>
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<html lang="es">
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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>Visor Markdown - Versión Optimizada</title>
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<script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
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<style>
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* { margin: 0; padding: 0; box-sizing: border-box; }
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body {
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font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
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/* Optimizamos el fondo: degradado fijo en CSS en lugar de Canvas */
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background: radial-gradient(circle at center, #0a0e27 0%, #050810 100%);
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min-height: 100vh;
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padding: 20px;
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overflow-x: hidden;
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color: #e2e8f0;
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}
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#stars-canvas {
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position: fixed;
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top: 0;
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left: 0;
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z-index: 0;
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pointer-events: none;
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}
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.container {
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max-width: 1400px;
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margin: 0 auto;
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background: rgba(15, 23, 42, 0.9);
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border-radius: 20px;
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/* Reducimos el radio de las sombras para mejorar el rendimiento */
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box-shadow: 0 0 30px rgba(59, 130, 246, 0.2);
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overflow: hidden;
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border: 1px solid rgba(59, 130, 246, 0.2);
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position: relative;
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z-index: 1;
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}
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/* Estilos de Header y Botones (Mantenemos tu estética) */
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.header {
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background: linear-gradient(135deg, #1e3a8a 0%, #7c3aed 50%, #db2777 100%);
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padding: 40px 30px;
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text-align: center;
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}
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.controls {
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display: flex;
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gap: 12px;
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padding: 20px;
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background: rgba(15, 23, 42, 0.95);
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border-bottom: 1px solid rgba(59, 130, 246, 0.2);
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flex-wrap: wrap;
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}
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.btn {
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padding: 10px 20px;
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border-radius: 8px;
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border: none;
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cursor: pointer;
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font-weight: 600;
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transition: transform 0.2s;
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color: white;
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}
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.btn-primary { background: #3b82f6; }
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.btn-secondary { background: #6366f1; }
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.btn-success { background: #10b981; }
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.btn:hover { transform: translateY(-2px); }
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.workspace {
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display: grid;
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grid-template-columns: 1fr 1fr;
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min-height: 600px;
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}
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.workspace.preview-only { grid-template-columns: 1fr; }
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.editor-panel, .preview-panel { padding: 30px; overflow-y: auto; max-height: 750px; }
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.editor-panel { border-right: 1px solid rgba(59, 130, 246, 0.2); }
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textarea {
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width: 100%;
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min-height: 550px;
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padding: 15px;
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background: rgba(30, 41, 59, 0.5);
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color: #fff;
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border: 1px solid rgba(59, 130, 246, 0.3);
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border-radius: 8px;
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font-family: 'Courier New', monospace;
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resize: none;
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}
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/* Markdown Preview Styles */
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#content h1 { color: #60a5fa; border-bottom: 1px solid #3b82f6; padding-bottom: 10px; margin-bottom: 20px; }
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#content code { background: #1e293b; color: #fbbf24; padding: 2px 6px; border-radius: 4px; }
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</style>
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</head>
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<body>
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<canvas id="stars-canvas"></canvas>
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<div class="container">
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<div class="header">
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<h1>🚀 Visor Markdown Pro</h1>
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<p>Optimizado para alto rendimiento</p>
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</div>
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<div class="controls">
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<input type="file" id="file-upload" hidden>
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<button onclick="document.getElementById('file-upload').click()" class="btn btn-primary">📁 Cargar</button>
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<button id="clear-btn" class="btn btn-secondary">🗑️ Limpiar</button>
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<button id="download-btn" class="btn btn-success">💾 Descargar</button>
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</div>
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<div class="workspace" id="workspace">
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<div class="editor-panel">
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<textarea id="markdown-input" placeholder="# Empieza a escribir..."></textarea>
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</div>
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<div class="preview-panel">
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<div id="content"></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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// --- OPTIMIZACIÓN DE CANVAS (Estrellas) ---
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const canvas = document.getElementById('stars-canvas');
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const ctx = canvas.getContext('2d');
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const offscreenCanvas = document.createElement('canvas');
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const offCtx = offscreenCanvas.getContext('2d');
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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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// Pre-renderizamos una estrella una sola vez
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offscreenCanvas.width = 10;
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offscreenCanvas.height = 10;
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const grad = offCtx.createRadialGradient(5, 5, 0, 5, 5, 5);
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grad.addColorStop(0, 'rgba(139, 92, 246, 1)');
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grad.addColorStop(1, 'rgba(139, 92, 246, 0)');
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offCtx.fillStyle = grad;
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offCtx.fillRect(0, 0, 10, 10);
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let stars = [];
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for (let i = 0; i < 150; i++) {
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stars.push({
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x: Math.random() * canvas.width,
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y: Math.random() * canvas.height,
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s: Math.random() * 0.5 + 0.2,
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vx: (Math.random() - 0.5) * 0.3,
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vy: (Math.random() - 0.5) * 0.3
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});
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}
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function animate() {
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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stars.forEach(s => {
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s.x = (s.x + s.vx + canvas.width) % canvas.width;
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s.y = (s.y + s.vy + canvas.height) % canvas.height;
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// Usamos drawImage en lugar de crear gradientes cada vez
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ctx.drawImage(offscreenCanvas, s.x, s.y, 10 * s.s, 10 * s.s);
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});
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requestAnimationFrame(animate);
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}
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animate();
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// --- OPTIMIZACIÓN DE EDITOR (Debounce) ---
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const input = document.getElementById('markdown-input');
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const content = document.getElementById('content');
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function debounce(func, wait) {
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let timeout;
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return (...args) => {
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clearTimeout(timeout);
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timeout = setTimeout(() => func.apply(this, args), wait);
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};
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}
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const updatePreview = debounce(() => {
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content.innerHTML = marked.parse(input.value || '*Vista previa vacía*');
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}, 300); // 300ms de espera
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input.addEventListener('input', updatePreview);
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// Funciones básicas de botones
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document.getElementById('clear-btn').onclick = () => {
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if(confirm('¿Limpiar?')) { input.value = ''; updatePreview(); }
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};
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document.getElementById('download-btn').onclick = () => {
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const blob = new Blob([input.value], {type: 'text/markdown'});
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const a = document.createElement('a');
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a.href = URL.createObjectURL(blob);
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a.download = 'nota.md';
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a.click();
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};
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// Cargar archivo
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document.getElementById('file-upload').onchange = (e) => {
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const reader = new FileReader();
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reader.onload = (ev) => { input.value = ev.target.result; updatePreview(); };
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reader.readAsText(e.target.files[0]);
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};
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// Carga inicial
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updatePreview();
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</script>
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</body>
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</html>
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