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<!DOCTYPE html>
<html lang="zh-TW" data-theme="light">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>NotebookLM PPTX Studio</title>
<script src="https://cdn.tailwindcss.com"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/pptxgenjs@3.12.0/dist/pptxgen.bundle.js"></script>
<script src="https://cdn.jsdelivr.net/npm/tesseract.js@5.0.5/dist/tesseract.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/sortablejs@1.15.2/Sortable.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/stackblur-canvas/2.5.0/stackblur.min.js"></script>
<script async src="https://docs.opencv.org/4.8.0/opencv.js" onload="onOpenCvReady();" type="text/javascript"></script>
<style>
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;700&family=Noto+Sans+TC:wght@400;500;700&display=swap');
:root { --primary: #2563EB; --bg: #F8FAFC; }
.dark { --bg: #0F172A; }
body { font-family: 'Plus Jakarta Sans', 'Noto Sans TC', sans-serif; background-color: var(--bg); transition: 0.3s; color: #1e293b; overflow: hidden; }
.dark body { color: #f1f5f9; }
/* UI Layout */
#editor-modal { position: fixed; inset: 0; z-index: 50; display: flex; flex-direction: column; background-color: #0f172a; }
.editor-canvas-area { flex: 1; position: relative; overflow: auto; display: flex; align-items: center; justify-content: center; background-color: #0f172a; background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px); background-size: 20px 20px; }
.editor-sidebar { width: 320px; background-color: #1e293b; border-left: 1px solid #334155; display: flex; flex-direction: column; height: 100%; flex-shrink: 0; }
.sidebar-content { flex: 1; overflow-y: auto; padding: 1.25rem; display: flex; flex-direction: column; gap: 1.25rem; }
.sidebar-footer { padding: 1.25rem; border-top: 1px solid #334155; background-color: #1e293b; flex-shrink: 0; }
/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(148, 163, 184, 0.3); border-radius: 3px; }
/* Editor Stage */
#editor-stage { position: relative; box-shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.5); transform-origin: center center; transition: transform 0.2s ease-out; }
.layer-mask { position: absolute; border: 1px dashed rgba(239, 68, 68, 0.5); cursor: move; z-index: 20; box-sizing: border-box; background-color: rgba(255,255,255,0.1); transition: border 0.2s, background 0.2s; }
.layer-mask:hover { z-index: 25; border: 2px solid #ef4444; background-color: rgba(255,255,255,0.2); }
.layer-mask.blur-mode { backdrop-filter: blur(8px); border-color: #ec4899; }
.preview-mode .layer-mask { border: none !important; opacity: 1 !important; z-index: 10; }
.preview-mode .layer-text { border: none !important; background: transparent !important; z-index: 20; }
.preview-mode .resize-handle, .preview-mode .text-resize-handle { display: none !important; }
/* pointer-events: auto */
.layer-text { position: absolute; border: 1px solid rgba(59, 130, 246, 0.4); z-index: 40; cursor: move; pointer-events: auto !important; display: flex; align-items: center; justify-content: flex-start; padding: 2px; box-sizing: border-box; overflow: visible; white-space: pre-wrap; word-wrap: break-word; }
.layer-text.active { border: 2px solid #3B82F6; z-index: 50; }
.resize-handle { position: absolute; bottom: -5px; right: -5px; width: 10px; height: 10px; background: #ef4444; border: 2px solid white; border-radius: 50%; cursor: nwse-resize; display: none; z-index: 60; }
.layer-mask:hover .resize-handle, .layer-mask.active .resize-handle { display: block; }
.text-resize-handle { position: absolute; bottom: -5px; right: -5px; width: 10px; height: 10px; background: #4F46E5; border: 2px solid white; border-radius: 50%; cursor: nwse-resize; display: none; z-index: 60; }
.layer-text:hover .text-resize-handle, .layer-text.active .text-resize-handle { display: block; }
/* Components */
.glass-card { background: rgba(255,255,255,0.9); border: 1px solid #e2e8f0; backdrop-filter: blur(8px); }
.dark .glass-card { background: rgba(30,41,59,0.9); border-color: rgba(255,255,255,0.1); }
.hidden { display: none !important; }
.btn { @apply px-4 py-2 rounded-lg font-bold transition shadow-sm active:scale-95 flex items-center justify-center gap-2; }
.input-field { @apply w-full border border-slate-300 dark:border-slate-600 rounded-lg p-2.5 text-sm focus:border-blue-500 outline-none transition;
background-color: #ffffff; color: #1e293b; color-scheme: light;}
.dark .input-field {background-color: #0f172a; color: #ffffff; color-scheme: dark;}
.input-label {@apply block text-xs font-bold uppercase tracking-wider mb-1 text-slate-500 dark:text-slate-400;}
.layer-text span {
pointer-events: none; width: 100%;
font-family: "Microsoft JhengHei", sans-serif;
line-height: 1.2;
text-shadow: -1px -1px 0 #fff, 1px -1px 0 #fff, -1px 1px 0 #fff, 1px 1px 0 #fff, 0px 0px 1px rgba(0,0,0,0.8);
font-weight: 600; }
.mode-selector { background: rgba(241, 245, 249, 0.8); padding: 0.5rem; border-radius: 1rem; display: flex; gap: 0.75rem; border: 1px solid rgba(226, 232, 240, 0.8); }
.dark .mode-selector { background: rgba(30, 41, 59, 0.8); border-color: rgba(255,255,255,0.1); }
.mode-btn { flex: 1; padding: 0.75rem; border-radius: 0.75rem; border: 1px solid transparent; font-size: 0.875rem; font-weight: 700; display: flex; align-items: center; justify-content: center; gap: 0.5rem; transition: all 0.2s; color: #64748b; }
.dark .mode-btn { color: #94a3b8; }
.mode-btn:hover { background: rgba(255, 255, 255, 0.8); color: #475569; }
.dark .mode-btn:hover { background: rgba(255, 255, 255, 0.1); color: #e2e8f0; }
.mode-btn.active { background: #ffffff; color: #4f46e5; border-color: #e2e8f0; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1); }
.dark .mode-btn.active { background: #1e293b; color: #818cf8; border-color: #475569; }
#global-loading-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.8); backdrop-filter: blur(5px); z-index: 9999; display: flex; flex-direction: column; align-items: center; justify-content: center; color: white; transition: opacity 0.3s; }
.loader { width: 48px; height: 48px; border: 5px solid #FFF; border-bottom-color: #3B82F6; border-radius: 50%; display: inline-block; box-sizing: border-box; animation: rotation 1s linear infinite; }
@keyframes rotation { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.progress-shimmer { background: linear-gradient(90deg, #3B82F6 0%, #60A5FA 50%, #3B82F6 100%); background-size: 200% 100%; animation: shimmer 1.5s infinite; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
.log-line { font-family: monospace; font-size: 11px; margin-bottom: 4px; border-left: 2px solid #cbd5e1; padding-left: 6px; }
.log-info { border-color: #3b82f6; color: #334155; }
.log-warn { border-color: #f59e0b; color: #b45309; }
.log-error { border-color: #ef4444; color: #b91c1c; }
.log-success { border-color: #22c55e; color: #15803d; }
</style>
</head>
<body class="min-h-screen flex flex-col gap-6 p-4 md:p-6 lg:p-8 overflow-auto">
<div id="global-loading-overlay" class="hidden">
<span class="loader mb-4"></span>
<h3 class="text-xl font-bold">處理中...</h3>
<p class="text-sm text-slate-300" id="global-loading-msg">正在載入檔案</p>
</div>
<header class="flex flex-col md:flex-row md:items-center justify-between gap-4">
<div class="space-y-1">
<div class="flex items-center gap-2">
<h1 class="text-2xl font-extrabold tracking-tight text-slate-900 dark:text-white">
<span class="text-blue-600">NPS</span> Notebook Presentation Studio
</h1>
<span class="px-2 py-0.5 rounded text-[10px] font-bold bg-indigo-100 text-indigo-700 dark:bg-indigo-900 dark:text-indigo-300">made by L.HW</span>
</div>
<p class="text-slate-500 dark:text-slate-400 text-sm">AI-Powered Slide Remastering Tool</p>
</div>
<div class="flex gap-2">
<button onclick="resetApp()" class="px-3 py-2 bg-red-50 hover:bg-red-100 text-red-600 border border-red-200 rounded-lg text-sm font-bold transition flex items-center gap-1 dark:bg-red-900/20 dark:border-red-800 dark:text-red-400">
🗑️ 重置
</button>
<button id="theme-toggle" class="p-2 rounded-lg border border-slate-200 dark:border-slate-700 hover:bg-slate-100 dark:hover:bg-slate-800 transition">🌓</button>
<button id="settings-btn" class="px-4 py-2 bg-slate-900 dark:bg-white text-white dark:text-slate-900 rounded-lg text-sm font-bold hover:opacity-90 transition shadow-lg">⚙️ 設定</button>
</div>
</header>
<div class="grid grid-cols-1 lg:grid-cols-12 gap-6 flex-1">
<div class="lg:col-span-8 space-y-6">
<div class="mode-selector">
<button id="mode-ai" class="mode-btn active" onclick="setMode('ai')">
<span>☁️</span> 雲端 AI 模式 <span class="text-[10px] opacity-70 font-normal ml-1">(Gemini)</span>
</button>
<button id="mode-offline" class="mode-btn" onclick="setMode('offline')">
<span>🔒</span> 離線模式 <span class="text-[10px] opacity-70 font-normal ml-1">(Tesseract)</span>
</button>
</div>
<div id="upload-view" class="glass-card rounded-2xl p-10 text-center cursor-pointer border-2 border-dashed border-slate-300 dark:border-slate-600 hover:border-blue-500 transition-all group">
<div class="w-16 h-16 bg-blue-50 dark:bg-slate-800 rounded-full flex items-center justify-center mx-auto mb-4 text-blue-500 group-hover:scale-110 transition-transform">
<svg class="w-8 h-8" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"></path></svg>
</div>
<p class="font-bold text-lg text-slate-700 dark:text-slate-200">點擊、拖放 或 Ctrl+V 貼上圖片</p>
<input type="file" id="file-input" class="hidden" multiple accept=".pdf,image/*">
</div>
<div id="selection-view" class="hidden glass-card rounded-2xl p-6 space-y-4">
<div class="flex justify-between items-center border-b border-slate-200 dark:border-slate-700 pb-3">
<h3 class="font-bold text-slate-800 dark:text-white">待處理頁面 (<span id="page-count-badge">0</span>)</h3>
<div class="flex items-center gap-4">
<div class="flex bg-slate-100 dark:bg-slate-700 rounded-lg p-1">
<button onclick="rotateAll(-90)" class="px-2 py-1 text-xs hover:bg-white dark:hover:bg-slate-600 rounded transition font-bold text-slate-600 dark:text-slate-300" title="全部向左轉">↺ 全左</button>
<div class="w-px bg-slate-300 mx-1"></div>
<button onclick="rotateAll(90)" class="px-2 py-1 text-xs hover:bg-white dark:hover:bg-slate-600 rounded transition font-bold text-slate-600 dark:text-slate-300" title="全部向右轉">全右 ↻</button>
</div>
<div class="space-x-2 text-xs">
<button id="select-all" class="text-blue-600 font-bold hover:underline">全選</button>
<button id="deselect-all" class="text-slate-400 hover:underline">清空</button>
</div>
</div>
</div>
<div id="thumbnail-grid" class="grid grid-cols-2 sm:grid-cols-3 gap-4 max-h-[500px] overflow-y-auto pr-2 pb-2"></div>
<div class="flex gap-4 pt-2">
<button onclick="resetApp(true)" class="px-4 py-2.5 bg-slate-200 text-slate-600 rounded-xl font-bold hover:bg-slate-300 transition">❌ 重選</button>
<button id="start-process-btn" class="flex-1 px-5 py-2.5 bg-blue-600 text-white rounded-xl font-bold hover:bg-blue-700 shadow-xl transition active:scale-[0.98]">🚀 開始分析</button>
<button id="export-ppt-btn" class="hidden flex-1 px-5 py-2.5 bg-emerald-600 text-white rounded-xl font-bold hover:bg-emerald-700 shadow-xl transition active:scale-[0.98]">📥 下載 PPTX</button>
</div> </div>
<div id="progress-view" class="hidden glass-card rounded-2xl p-10 text-center space-y-6">
<div class="relative w-20 h-20 mx-auto">
<div class="absolute inset-0 rounded-full border-4 border-slate-100 dark:border-slate-800"></div>
<div id="progress-spinner" class="absolute inset-0 rounded-full border-4 border-blue-600 border-t-transparent animate-spin"></div>
</div>
<div>
<h3 id="progress-title" class="text-xl font-bold text-slate-800 dark:text-white">初始化...</h3>
<p id="progress-detail" class="text-sm text-slate-500 mt-2 font-mono">準備中...</p>
</div>
<div class="w-full bg-slate-100 dark:bg-slate-700 rounded-full h-2 overflow-hidden">
<div id="progress-bar" class="progress-shimmer h-full transition-all duration-300" style="width: 0%"></div>
</div>
</div>
<div id="result-view" class="hidden glass-card rounded-2xl p-8 text-center space-y-6">
<div class="w-20 h-20 bg-green-100 dark:bg-green-900/30 text-green-600 rounded-full flex items-center justify-center mx-auto text-3xl">✓</div>
<h2 class="text-2xl font-bold text-slate-800 dark:text-white">分析完成！</h2>
<p class="text-slate-500 text-sm">請進入編輯器微調內容，確認無誤後下載。</p>
<div class="flex flex-col sm:flex-row gap-3 justify-center">
<button id="download-btn" class="px-8 py-3 bg-green-600 text-white rounded-xl font-bold hover:bg-green-700 shadow-lg transition flex items-center justify-center gap-2">
<span>📥</span> 下載 PPTX
</button>
<button onclick="resetApp(true)" class="px-8 py-3 bg-slate-100 dark:bg-slate-800 text-slate-600 dark:text-slate-200 rounded-xl font-bold hover:bg-slate-200 transition">
🔄 處理下一份
</button>
</div> </div>
</div>
<div class="lg:col-span-4 flex flex-col h-[500px] lg:h-auto glass-card rounded-2xl overflow-hidden">
<div class="p-3 bg-slate-50 dark:bg-slate-800/50 border-b border-slate-200 dark:border-slate-700">
<h3 class="font-bold text-sm text-slate-600 dark:text-slate-300 flex items-center gap-2">
<span class="w-2 h-2 bg-green-500 rounded-full animate-pulse"></span> 系統日誌
</h3>
</div>
<div id="log-console" class="flex-1 bg-white dark:bg-slate-900 p-4 overflow-y-auto text-xs font-mono space-y-2">
<div class="log-info log-line">系統就緒。等待檔案輸入...</div>
</div>
</div>
</div>
<div id="settings-modal" class="hidden fixed inset-0 z-50 flex items-center justify-center p-4 bg-black/50 backdrop-blur-sm">
<div class="bg-white dark:bg-slate-900 rounded-2xl shadow-2xl w-full max-w-md p-6 space-y-4 animate-bounce-in">
<h2 class="text-xl font-bold text-slate-900 dark:text-white">API 設定</h2>
<div class="space-y-4">
<div>
<label class="block text-xs font-bold text-slate-500 uppercase mb-1">Gemini API Key</label>
<input type="password" id="api-key-input" placeholder="AIza..." class="w-full p-3 border border-slate-200 dark:border-slate-700 rounded-xl bg-slate-50 dark:bg-slate-800 dark:text-white outline-none transition">
</div>
<div>
<label class="block text-xs font-bold text-slate-500 uppercase mb-1">模型選擇</label>
<select id="model-select" class="w-full p-3 border border-slate-200 dark:border-slate-700 rounded-xl bg-slate-50 dark:bg-slate-800 dark:text-white outline-none">
<option value="gemini-3-flash-preview">Gemini 3 Flash Preview (預設)</option>
<option value="gemini-2.5-pro">Gemini 2.5 pro</option>
<option value="gemini-2.5-flash-preview-09-2025">Gemini 2.5 Flash Preview 09-2025</option>
</select>
</div>
<button onclick="saveSettings()" class="w-full py-3 bg-blue-600 text-white rounded-xl font-bold hover:bg-blue-700 transition">儲存設定</button>
</div>
</div>
</div>
<div id="editor-modal" class="hidden">
<div class="h-16 bg-slate-900 border-b border-slate-700 flex justify-between items-center px-6 shadow-md z-20 flex-shrink-0">
<div class="flex items-center gap-4">
<div class="flex flex-col">
<h3 class="font-bold text-lg text-white tracking-tight">視覺編輯器</h3>
<p class="text-[10px] text-slate-400">NotebookLM PPTX Studio</p>
</div>
<div class="flex items-center bg-slate-800 rounded-lg p-1 border border-slate-600 ml-4">
<button onclick="changePage(-1)" id="prev-page-btn" class="p-1.5 hover:bg-slate-700 text-slate-300 rounded transition disabled:opacity-30 disabled:cursor-not-allowed" title="上一頁">
<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"></path></svg>
</button>
<span class="text-xs text-white font-mono px-3 font-bold select-none" id="editor-page-label">Page 1</span>
<button onclick="changePage(1)" id="next-page-btn" class="p-1.5 hover:bg-slate-700 text-slate-300 rounded transition disabled:opacity-30 disabled:cursor-not-allowed" title="下一頁">
<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"></path></svg>
</button>
</div>
</div>
<div class="flex items-center gap-3">
<button id="toggle-preview-btn" onclick="togglePreviewMode()" class="px-4 py-2 rounded-lg text-sm font-bold text-slate-300 border border-slate-600 hover:bg-slate-800 transition flex items-center gap-2">
<span>👁️</span> 預覽模式
</button>
<button onclick="closeEditor()" class="px-5 py-2 bg-indigo-600 hover:bg-indigo-500 text-white rounded-lg text-sm font-bold shadow-lg shadow-indigo-500/30 transition flex items-center gap-2">
<span>✓</span> 完成編輯
</button>
</div>
</div>
<div class="flex-1 flex overflow-hidden">
<div class="editor-canvas-area" id="editor-canvas-area">
<div id="editor-stage" class="cursor-default">
<img id="editor-img" class="block w-full h-full select-none rounded shadow-2xl" draggable="false">
<div id="editor-mask-layer" class="absolute inset-0"></div>
<div id="editor-text-layer" class="absolute inset-0"></div>
</div>
<div id="editor-hint" class="absolute bottom-6 left-1/2 -translate-x-1/2 bg-slate-800/90 backdrop-blur px-4 py-2 rounded-full border border-slate-600/50 text-xs text-slate-400 pointer-events-none shadow-xl transition-opacity">
💡 提示：拖曳紅框調整遮罩，雙擊文字進行編輯
</div>
</div>
<div id="editor-toolbar" class="editor-sidebar hidden md:flex">
<div class="p-5 border-b border-slate-700 flex justify-between items-center bg-slate-800/50">
<h4 class="text-white text-sm font-bold flex items-center gap-2"><span>🛠️</span> 屬性面板</h4>
<button id="ai-qa-btn" onclick="triggerAIQA()" class="group relative px-3 py-1.5 bg-gradient-to-r from-indigo-500 to-purple-600 hover:from-indigo-400 hover:to-purple-500 text-white rounded-lg text-[10px] font-bold shadow-lg border border-white/10 transition-all active:scale-95 overflow-hidden">
<div class="absolute inset-0 bg-white/20 translate-y-full group-hover:translate-y-0 transition-transform duration-300"></div>
<span class="relative flex items-center gap-1">✨ AI 精修</span>
</button>
</div>
<div class="sidebar-content custom-scrollbar space-y-5">
<div class="space-y-1">
<label class="input-label text-white" >文字內容</label>
<textarea id="edit-text-val" rows="4" class="input-field resize-none leading-relaxed " placeholder="選擇一個區塊..."></textarea>
</div>
<div class="grid grid-cols-1 md:grid-cols-2 gap-3">
<div class="space-y-1">
<label class="input-label text-white">字級 (pt)</label>
<input type="number" id="edit-size-val" class="input-field" style="width: 4ch;" min="8">
</div>
<div class="space-y-1">
<label class="input-label text-white">遮罩模式</label>
<select id="edit-mask-type" class="input-field cursor-pointer">
<option value="solid">單色 (Solid)</option>
<option value="blur">模糊 (Blur)</option>
</select>
</div>
</div>
<div class="border-t border-slate-700 my-2"></div>
<div class="space-y-3">
<div class="space-y-1">
<label class="input-label flex justify-between text-white">
文字顏色
<span id="val-text-color" class="font-mono text-white normal-case">#000000</span>
</label>
<div class="flex gap-2">
<div class="relative flex-1 h-9 rounded-lg overflow-hidden border border-slate-600">
<input type="color" id="edit-text-color" class="absolute -top-2 -left-2 w-[150%] h-[150%] cursor-pointer p-0 border-0">
</div>
<button onclick="activateEyedropper('text')" class="w-9 h-9 bg-slate-700 hover:bg-slate-600 border border-slate-600 rounded-lg flex items-center justify-center text-white transition" title="從圖片吸取顏色">
<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19.5 4.5l-2.5 2.5 2.5 2.5M15.5 8.5L5 19l4 4 10.5-10.5L15.5 8.5zM3 21l3-1 1-3"></path></svg>
</button>
</div>
</div>
<div class="space-y-1">
<label class="input-label flex justify-between text-white">
遮罩背景色
<span id="val-bg-color" class="font-mono text-white normal-case">#FFFFFF</span>
</label>
<div class="flex gap-2">
<div class="relative flex-1 h-9 rounded-lg overflow-hidden border border-slate-600">
<input type="color" id="edit-bg-color" class="absolute -top-2 -left-2 w-[150%] h-[150%] cursor-pointer p-0 border-0">
</div>
<button onclick="activateEyedropper('bg')" class="w-9 h-9 bg-slate-700 hover:bg-slate-600 border border-slate-600 rounded-lg flex items-center justify-center text-white transition" title="從圖片吸取顏色">
<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19.5 4.5l-2.5 2.5 2.5 2.5M15.5 8.5L5 19l4 4 10.5-10.5L15.5 8.5zM3 21l3-1 1-3"></path></svg>
</button>
</div>
</div>
</div>
</div>
<div class="sidebar-footer">
<button onclick="deleteSelectedBlock()" class="w-full py-3 bg-red-500/10 text-red-400 border border-red-500/30 rounded-xl text-sm font-bold hover:bg-red-500/20 hover:border-red-500/50 transition flex items-center justify-center gap-2 group">
<span class="group-hover:scale-110 transition-transform">🗑️</span> 刪除此區塊
</button>
</div>
</div>
</div>
</div>
<div id="custom-dialog-overlay" class="fixed inset-0 z-[100] flex items-center justify-center bg-slate-900/60 backdrop-blur-sm opacity-0 pointer-events-none transition-opacity duration-200 hidden">
<div class="bg-white dark:bg-slate-800 rounded-xl shadow-2xl max-w-sm w-full p-6 transform scale-95 transition-transform duration-200">
<h3 id="dialog-title" class="text-lg font-bold mb-2">標題</h3>
<p id="dialog-msg" class="text-sm text-gray-600 dark:text-gray-300 mb-6">內容</p>
<input id="dialog-input" type="text" class="hidden w-full p-2 border rounded mb-4 dark:bg-slate-800 dark:border-slate-600" />
<div class="flex justify-end gap-2">
<button id="dialog-cancel" class="px-4 py-2 text-sm text-gray-500 hover:bg-gray-100 rounded transition hidden">取消</button>
<button id="dialog-ok" class="px-6 py-2 bg-blue-600 text-white rounded text-sm font-bold hover:bg-blue-700 transition">確定</button>
</div>
</div>
</div>
<script>
// ==========================================
// 1. 工具與設定 (Utils & Setup)
// ==========================================
function log(msg, type='info') {
const el = document.getElementById('log-console');
if (!el) return;
const color = type==='error'?'text-red-500':type==='success'?'text-green-500':'text-slate-500';
el.innerHTML += `<div class="${color} log-line">[${new Date().toLocaleTimeString()}] ${msg}</div>`;
el.scrollTop = el.scrollHeight;
}
async function resetApp(skipConfirm = false) {
if (!skipConfirm && APP.pages.length > 0) {
if (!(await Dialog.confirm("確定要重新開始嗎？目前的進度將會遺失。"))) return;
}
APP.pages = [];
APP.editor = { isPreview: false, currentIdx: -1, selectedBlockIdx: -1, pickingColor: null };
APP.currentFileName = 'Presentation';
const views = ['selection-view', 'progress-view', 'result-view', 'editor-modal'];
views.forEach(id => document.getElementById(id).classList.add('hidden'));
document.getElementById('upload-view').classList.remove('hidden');
document.getElementById('thumbnail-grid').innerHTML = '';
document.getElementById('file-input').value = '';
const badge = document.getElementById('page-count-badge');
if(badge) badge.innerText = '0';
const startBtn = document.getElementById('start-process-btn');
if(startBtn) startBtn.innerText = "🚀 開始分析";
document.getElementById('export-ppt-btn').classList.add('hidden');
document.getElementById('log-console').innerHTML = '<div class="log-info log-line">系統已重置，等待新檔案...</div>';
log('系統已重置。', 'info');
}
function setMode(mode) {
APP.mode = mode;
document.querySelectorAll('.mode-btn').forEach(b => b.classList.remove('active'));
const btn = document.getElementById(`mode-${mode}`);
if (btn) btn.classList.add('active');
}
function toggleSettings(show) {
document.getElementById('settings-modal').classList.toggle('hidden', !show);
}
function saveSettings() {
APP.apiKey = document.getElementById('api-key-input').value;
APP.model = document.getElementById('model-select').value;
localStorage.setItem('gemini_api_key', APP.apiKey);
localStorage.setItem('gemini_model', APP.model);
toggleSettings(false);
log('設定已儲存', 'success');
}
function toggleTheme() {
document.documentElement.classList.toggle('dark');
localStorage.setItem('theme', document.documentElement.classList.contains('dark') ? 'dark' : 'light');
}
function bindSafeClick(id, fn) {
const el = document.getElementById(id);
if(el) el.onclick = fn;
}
function showGlobalLoading(show, msg = "載入中...") {
const el = document.getElementById('global-loading-overlay');
const msgEl = document.getElementById('global-loading-msg');
if (show) {
if(msgEl) msgEl.innerText = msg;
if(el) el.classList.remove('hidden');
} else {
if(el) el.classList.add('hidden');
}
}
const Dialog = {
overlay: document.getElementById('custom-dialog-overlay'),
title: document.getElementById('dialog-title'),
msg: document.getElementById('dialog-msg'),
input: document.getElementById('dialog-input'),
okBtn: document.getElementById('dialog-ok'),
cancelBtn: document.getElementById('dialog-cancel'),
show(type, title, msg, defaultValue = '') {
return new Promise(resolve => {
if(!this.overlay) return;
this.title.innerText = title; this.msg.innerText = msg;
this.overlay.classList.remove('hidden');
this.overlay.classList.add('opacity-100', 'pointer-events-auto');
this.input.classList.toggle('hidden', type !== 'prompt');
this.cancelBtn.classList.toggle('hidden', type === 'alert');
if (type === 'prompt') { this.input.value = defaultValue; this.input.focus(); }
const close = (val) => {
this.overlay.classList.remove('opacity-100', 'pointer-events-auto');
this.overlay.classList.add('hidden');
resolve(val);
};
const newOk = this.okBtn.cloneNode(true);
const newCancel = this.cancelBtn.cloneNode(true);
this.okBtn.parentNode.replaceChild(newOk, this.okBtn);
this.cancelBtn.parentNode.replaceChild(newCancel, this.cancelBtn);
this.okBtn = newOk; this.cancelBtn = newCancel;
this.okBtn.onclick = () => { if (type === 'prompt') close(this.input.value); else close(true); };
this.cancelBtn.onclick = () => close(false);
});
},
alert(msg) { return this.show('alert', '提示', msg); },
confirm(msg) { return this.show('confirm', '確認', msg); },
prompt(msg, val) { return this.show('prompt', '輸入', msg, val); }
};
let cvReady = false;
function onOpenCvReady() { cvReady = true; log('OpenCV 核心模組已載入。', 'success'); }
const APP = {
mode: 'ai',
apiKey: localStorage.getItem('gemini_api_key') || '',
model: localStorage.getItem('gemini_model') || 'gemini-3-flash-preview',
pages: [],
tesseractWorker: null,
editor: { isPreview: false, currentIdx: -1, selectedBlockIdx: -1, pickingColor: null },
currentFileName: 'Presentation'
};
if (typeof pdfjsLib !== 'undefined') {
pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js';
}
document.addEventListener('DOMContentLoaded', () => {
const apiKeyInput = document.getElementById('api-key-input');
const modelSelect = document.getElementById('model-select');
if(apiKeyInput) apiKeyInput.value = APP.apiKey;
if(modelSelect) modelSelect.value = APP.model;
if (localStorage.getItem('theme') === 'dark') document.documentElement.classList.add('dark');
const dropZone = document.getElementById('upload-view');
const fileInput = document.getElementById('file-input');
if (dropZone && fileInput) {
dropZone.onclick = () => fileInput.click();
fileInput.onchange = e => handleFiles(e.target.files);
dropZone.addEventListener('dragover', e => { e.preventDefault(); dropZone.classList.add('border-indigo-500', 'bg-indigo-50', 'dark:bg-slate-800'); });
dropZone.addEventListener('dragleave', e => { dropZone.classList.remove('border-indigo-500', 'bg-indigo-50', 'dark:bg-slate-800'); });
dropZone.addEventListener('drop', e => { e.preventDefault(); dropZone.classList.remove('border-indigo-500', 'bg-indigo-50', 'dark:bg-slate-800'); handleFiles(e.dataTransfer.files); });
}
document.addEventListener('paste', (e) => {
const items = e.clipboardData.items;
const files = [];
for (let i = 0; i < items.length; i++) { if (items[i].type.indexOf('image') !== -1) files.push(items[i].getAsFile()); }
if (files.length > 0) handleFiles(files);
});
bindSafeClick('settings-btn', () => toggleSettings(true));
bindSafeClick('theme-toggle', toggleTheme);
bindSafeClick('start-process-btn', startProcessing);
bindSafeClick('export-ppt-btn', exportPPTX);
bindSafeClick('download-btn', exportPPTX);
bindSafeClick('select-all', () => { APP.pages.forEach(p => p.selected = true); renderGrid(); });
bindSafeClick('deselect-all', () => { APP.pages.forEach(p => p.selected = false); renderGrid(); });
const inputs = ['edit-text-val', 'edit-size-val', 'edit-mask-type', 'edit-text-color', 'edit-bg-color'];
inputs.forEach(id => {
const el = document.getElementById(id);
if(el) el.addEventListener('input', syncEditorChanges);
});
// 綁定吸管
const editorImg = document.getElementById('editor-img');
if(editorImg) editorImg.addEventListener('click', handleEyedropperClick);
// 啟動 ResizeObserver
const editorStage = document.getElementById('editor-stage');
if (editorStage) {
new ResizeObserver(() => {
requestAnimationFrame(() => {
const modal = document.getElementById('editor-modal');
if (modal && !modal.classList.contains('hidden')) {
document.querySelectorAll('.layer-text').forEach(el => {
if (typeof el.refreshFontSize === 'function') el.refreshFontSize();
});
}
});
}).observe(editorStage);
}
});
// ==========================================
// 2. 主邏輯 (Main Logic)
// ==========================================
async function handleFiles(files) {
if (files.length === 0) return;
const file = files[0];
const fileName = file.name;
const nameWithoutExt = fileName.substring(0, fileName.lastIndexOf('.')) || fileName;
APP.currentFileName = nameWithoutExt;
showGlobalLoading(true, "正在讀取檔案...");
log(`讀取 ${files.length} 個檔案...`);
APP.pages = [];
document.getElementById('upload-view').classList.add('hidden');
document.getElementById('selection-view').classList.remove('hidden');
await new Promise(r => setTimeout(r, 100));
for (const file of files) {
try {
if (file.type === 'application/pdf') await loadPDF(file);
else if (file.type.startsWith('image/')) await loadImage(file);
} catch (e) { log(`Error: ${e.message}`, 'error'); }
}
renderGrid();
showGlobalLoading(false);
}
async function loadPDF(file) {
const buffer = await file.arrayBuffer();
const pdf = await pdfjsLib.getDocument(buffer).promise;
for (let i = 1; i <= pdf.numPages; i++) {
const page = await pdf.getPage(i);
const viewport = page.getViewport({ scale: 2.0 });
const canvas = document.createElement('canvas');
canvas.width = viewport.width; canvas.height = viewport.height;
await page.render({ canvasContext: canvas.getContext('2d'), viewport }).promise;
addPage(canvas.toDataURL('image/jpeg', 0.8), i, viewport.width, viewport.height);
}
}
async function loadImage(file) {
return new Promise(resolve => {
const reader = new FileReader();
reader.onload = e => {
const img = new Image();
img.onload = () => {
addPage(e.target.result, APP.pages.length + 1, img.width, img.height);
resolve();
};
img.src = e.target.result;
};
reader.readAsDataURL(file);
});
}
function addPage(img, idx, w, h) {
APP.pages.push({
id: Date.now() + idx,
img,
width: w, height: h,
selected: true,
result: null,
status: 'pending'
});
}
function renderGrid() {
const grid = document.getElementById('thumbnail-grid');
if(!grid) return;
grid.innerHTML = '';
let anyDone = false;
APP.pages.forEach((p, i) => {
if(p.status === 'done') anyDone = true;
const div = document.createElement('div');
div.className = `relative aspect-video bg-slate-200 dark:bg-slate-700 rounded-xl overflow-hidden cursor-pointer border-2 transition-all duration-200 group ${p.selected ? 'border-indigo-500 ring-2 ring-indigo-200 dark:ring-indigo-900' : 'border-transparent opacity-80'}`;
div.onclick = (e) => {
if(e.target.tagName !== 'BUTTON' && !e.target.closest('button')) {
p.selected = !p.selected; renderGrid();
}
};
div.innerHTML = `
<img src="${p.img}" class="w-full h-full object-cover">
<div class="absolute top-2 left-2 flex gap-1 opacity-0 group-hover:opacity-100 transition-opacity z-20">
<button onclick="rotatePage(${i}, -90)" class="w-7 h-7 bg-black/60 hover:bg-black/80 text-white rounded-full backdrop-blur flex items-center justify-center text-xs" title="向左旋轉">↺</button>
<button onclick="rotatePage(${i}, 90)" class="w-7 h-7 bg-black/60 hover:bg-black/80 text-white rounded-full backdrop-blur flex items-center justify-center text-xs" title="向右旋轉">↻</button>
</div>
<div class="absolute bottom-0 left-0 right-0 bg-black/70 text-white text-[10px] text-center py-1 font-bold">Page ${i+1}</div>
${p.selected ? '<div class="absolute top-2 right-2 w-5 h-5 bg-indigo-500 rounded-full border-2 border-white shadow-md flex items-center justify-center text-white text-xs z-10">✓</div>' : ''}
${p.result ? `<button onclick="loadEditor(${i})" class="absolute bottom-10 right-2 bg-white text-indigo-600 px-3 py-1 text-xs font-bold rounded-lg shadow-lg hover:scale-105 transition-transform z-10 border border-indigo-100">✏️ 編輯</button>` : ''}
${p.status === 'pending' && !p.result ? '<div class="absolute inset-0 flex items-center justify-center pointer-events-none"><span class="bg-black/50 text-white text-xs px-2 py-1 rounded">等待分析</span></div>' : ''}
`;
grid.appendChild(div);
});
const badge = document.getElementById('page-count-badge');
if(badge) badge.innerText = APP.pages.length;
const exportBtn = document.getElementById('export-ppt-btn');
const startBtn = document.getElementById('start-process-btn');
if (anyDone) {
if(exportBtn) exportBtn.classList.remove('hidden');
if(startBtn) startBtn.innerText = "🔄 重新分析 (已選)";
} else {
if(startBtn) startBtn.innerText = "🚀 開始分析";
}
}
async function startProcessing() {
const targets = APP.pages.filter(p => p.selected);
if (targets.length === 0) return Dialog.alert('請選擇至少一頁');
document.getElementById('selection-view').classList.add('hidden');
document.getElementById('progress-view').classList.remove('hidden');
if (APP.mode === 'offline' && !APP.tesseractWorker) {
log('正在初始化 Tesseract 核心...', 'info');
APP.tesseractWorker = await Tesseract.createWorker('chi_tra+eng');
}
const modelChain = [APP.model,'gemini-3-flash-preview','gemini-2.5-pro', 'gemini-2.5-flash-preview-09-2025'];
const uniqueChain = [...new Set(modelChain)];
const BATCH_SIZE = 10; // 降低 Batch Size 可提高穩定性
for (let i = 0; i < targets.length; i += BATCH_SIZE) {
const batchPages = targets.slice(i, i + BATCH_SIZE);
const batchIndices = batchPages.map((_, idx) => i + idx + 1).join(', ');
const pct = Math.round((i / targets.length) * 100);
const pBar = document.getElementById('progress-bar');
const pTitle = document.getElementById('progress-title');
if(pBar) pBar.style.width = `${pct}%`;
if(pTitle) pTitle.innerText = `分析頁面 [${batchIndices}]...`;
try {
let batchResults = [];
let success = false;
if (APP.mode === 'ai') {
for (const m of uniqueChain) {
try {
log(`AI 批次分析中 (${m})...`, 'info');
const rawResults = await runGeminiBatch(batchPages, m);
if (rawResults && rawResults.length > 0) {
batchResults = rawResults;
success = true; break;
}
} catch(e) { log(`AI Batch 失敗 (${m}): ${e.message}`, 'warn'); }
}
}
for (let k = 0; k < batchPages.length; k++) {
const page = batchPages[k];
let blocks = [];
let pageSuccess = false;
if (success && batchResults[k]) {
let raw = batchResults[k].blocks || batchResults[k];
if (Array.isArray(raw)) {
blocks = raw.map(item => ({
text: item.text || item.Text || "",
box_2d: item.box_2d || item.box || [0,0,0,0],
type: item.type || "body"
})).filter(b => b.box_2d && b.box_2d.length === 4);
pageSuccess = true;
}
}
if (!pageSuccess) {
log(`頁面 ${i+k+1} 轉為離線 OCR...`, 'warn');
if (!APP.tesseractWorker) APP.tesseractWorker = await Tesseract.createWorker('chi_tra+eng');
const tempImg = new Image();
tempImg.src = page.img;
await new Promise(r => tempImg.onload = r);
const processedCanvas = preprocessImageForOCR(tempImg);
const { data } = await APP.tesseractWorker.recognize(processedCanvas);
blocks = mergeOfflineBlocks(
data.words.map(w => ({ text: w.text, box: w.bbox, confidence: w.confidence })),
processedCanvas.width,
processedCanvas.height
);
}
blocks = filterOverlappingBlocks(blocks);
let processedBlocks = blocks;
if (cvReady && APP.mode === 'ai') {
const tempImg = new Image();
tempImg.src = page.img;
await new Promise(r => tempImg.onload = r);
processedBlocks = refineBlocksWithCV(tempImg, blocks);
}
const enhanced = await enhanceBlocksColors(page.img, processedBlocks);
page.result = { blocks: enhanced, background: page.img };
page.status = 'done';
}
log(`批次 [${batchIndices}] 完成`, 'success');
} catch (e) {
log(`錯誤: ${e.message}`, 'error');
batchPages.forEach(p => p.status = 'error');
}
if (i + BATCH_SIZE < targets.length) {
log('冷卻中 (避免 API 速率限制)...', 'info');
await new Promise(r => setTimeout(r, 4000));
}
}
const pBar = document.getElementById('progress-bar');
if(pBar) pBar.style.width = `100%`;
setTimeout(() => {
document.getElementById('progress-view').classList.add('hidden');
document.getElementById('selection-view').classList.remove('hidden');
renderGrid();
const firstDoneIdx = APP.pages.findIndex(p => p.status === 'done');
if(firstDoneIdx !== -1) loadEditor(firstDoneIdx);
}, 500);
}
// ==========================================
// 4. 演算法與 AI 函數 (Algorithms)
// ==========================================
async function runGeminiBatch(pages, model) {
const prompt = `
Role: High-Precision Document Layout Analysis Engine for PowerPoint Reconstruction.
Task: Analyze the ${pages.length} provided slide images sequentially and extract text blocks with precise coordinates.
*** CRITICAL RULES (MUST FOLLOW) ***:
1. **Semantic Grouping (HIGHEST PRIORITY):** - Do NOT fragment text into single lines.
- Group related text lines (e.g., a paragraph, a multi-line list item, or a complete sentence) into a SINGLE block.
- If a sentence wraps to the next line, merge them.
2. **Bounding Boxes:** - Return precise "box_2d" as [ymin, xmin, ymax, xmax] normalized to a 0-1000 scale.
- Ensure the box encompasses the entire grouped text area.
3. **Classification types:**
- "title": Main slide headlines (usually top, largest font).
- "header": Sub-headers or section titles.
- "body": Standard paragraph content.
- "list": Bullet points (Group the bullet symbol and the text together).
- "label": Short text labels inside charts, diagrams, or images.
- "footer": Page numbers or footnotes at the bottom.
4. **Alignment Detection:**
- "align": Detect visual alignment ("left", "center", "right"). Defaults to "left".
5. **Strict Output Format:** - Return RAW JSON ONLY.
- Do NOT use Markdown code blocks (no \`\`\`json).
- Do NOT include any introductory text.
*** EXPECTED JSON STRUCTURE ***:
{
"results": [
{
"page_index": 0,
"blocks": [
{
"text": "The full content of the paragraph...",
"box_2d": [100, 50, 200, 950],
"type": "body",
"align": "left"
}
]
}
... (repeat for all ${pages.length} images)
]
}
`;
const parts = [{ text: prompt }];
pages.forEach((page, index) => {
parts.push({ text: `\n[Image ${index}]:` });
parts.push({ inline_data: { mime_type: "image/jpeg", data: page.img.split(',')[1] } });
});
if (!APP.apiKey) log('無 API Key', 'warn');
const maxRetries = 3;
let attempt = 0;
while (attempt < maxRetries) {
try {
const res = await fetch(`https://generativelanguage.googleapis.com/v1beta/models/${model}:generateContent?key=${APP.apiKey}`, {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({
contents: [{ role: "user", parts: parts }],
generationConfig: { temperature: 0.1, topP: 0.95, maxOutputTokens: 65536 }
})
});
if (res.status === 429) {
attempt++;
const waitTime = attempt * 5000;
log(`API 忙碌 (429)，等待 ${waitTime/1000} 秒後重試...`, 'warn');
await new Promise(r => setTimeout(r, waitTime));
continue;
}
if (!res.ok) throw new Error(`HTTP ${res.status}`);
const data = await res.json();
let txt = data.candidates?.[0]?.content?.parts?.[0]?.text || "{}";
const parsed = safeJSONParse(txt);
if (parsed.results && Array.isArray(parsed.results)) return parsed.results;
else if (Array.isArray(parsed)) return parsed;
log("AI 回傳格式無法識別，跳過此批次。", 'warn');
return [];
} catch (e) {
if (attempt === maxRetries - 1) {
console.error("Final Error:", e);
log(`批次處理發生錯誤: ${e.message}，已跳過。`, 'error');
return [];
}
console.warn(`Attempt ${attempt} failed:`, e);
}
attempt++;
}
return [];
}
function safeJSONParse(str) {
str = str.replace(/```json|```/g, '').trim();
const start = str.indexOf('{');
const end = str.lastIndexOf('}');
if (start !== -1 && end !== -1) {
str = str.substring(start, end + 1);
}
try {
return JSON.parse(str);
} catch (e) {
console.warn("JSON 解析失敗，嘗試修復截斷...", e.message);
try {
let lastValidIndex = str.lastIndexOf('}]');
if (lastValidIndex !== -1) {
let fixedStr = str.substring(0, lastValidIndex + 2) + "]}";
return JSON.parse(fixedStr);
}
if (str.lastIndexOf('}') < str.lastIndexOf('{')) {
return JSON.parse(str + "}]}");
}
} catch (e2) {
console.error("JSON 修復失敗。", str);
}
return {};
}
}
function refineBlocksWithCV(imgElement, aiBlocks) {
if (!cvReady) return aiBlocks;
try {
const src = cv.imread(imgElement);
const gray = new cv.Mat(); const binary = new cv.Mat(); const dilated = new cv.Mat();
cv.cvtColor(src, gray, cv.COLOR_RGBA2GRAY, 0);
cv.threshold(gray, binary, 0, 255, cv.THRESH_BINARY_INV + cv.THRESH_OTSU);
const kernel = cv.getStructuringElement(cv.MORPH_RECT, new cv.Size(10, 3));
cv.dilate(binary, dilated, kernel);
const contours = new cv.MatVector(); const hierarchy = new cv.Mat();
cv.findContours(dilated, contours, hierarchy, cv.RETR_EXTERNAL, cv.CHAIN_APPROX_SIMPLE);
const cvRects = [];
const imgH = src.rows; const imgW = src.cols;
for (let i = 0; i < contours.size(); ++i) {
const rect = cv.boundingRect(contours.get(i));
if (rect.width > 5 && rect.height > 5) {
cvRects.push({ y0: (rect.y / imgH)*1000, x0: (rect.x / imgW)*1000, y1: ((rect.y+rect.height)/imgH)*1000, x1: ((rect.x+rect.width)/imgW)*1000 });
}
}
src.delete(); gray.delete(); binary.delete(); dilated.delete(); contours.delete(); hierarchy.delete(); kernel.delete();
return aiBlocks.map(block => {
if (!block.box_2d || block.box_2d.length < 4) return block;
const ai = { y0: block.box_2d[0], x0: block.box_2d[1], y1: block.box_2d[2], x1: block.box_2d[3] };
const intersections = cvRects.filter(cvR => {
const yA = Math.max(ai.y0, cvR.y0), xA = Math.max(ai.x0, cvR.x0);
const yB = Math.min(ai.y1, cvR.y1), xB = Math.min(ai.x1, cvR.x1);
return (xA < xB && yA < yB) && (((xB - xA) * (yB - yA)) / ((cvR.x1 - cvR.x0) * (cvR.y1 - cvR.y0)) > 0.5);
});
if (intersections.length > 0) {
let newY0=1000, newX0=1000, newY1=0, newX1=0;
intersections.forEach(r => { newY0=Math.min(newY0,r.y0); newX0=Math.min(newX0,r.x0); newY1=Math.max(newY1,r.y1); newX1=Math.max(newX1,r.x1); });
const pad = 3;
return { ...block, box_2d: [Math.max(0,newY0-pad), Math.max(0,newX0-pad), Math.min(1000,newY1+pad), Math.min(1000,newX1+pad)], snapped: true };
}
return { ...block, snapped: false };
});
} catch (e) { console.error(e); return aiBlocks; }
}
function calculateSmartFontSize(box, text, type) {
const PPT_WIDTH_PT = 720; const PPT_HEIGHT_PT = 405;
const widthPt = ((box[3] - box[1]) / 1000) * PPT_WIDTH_PT;
const heightPt = ((box[2] - box[0]) / 1000) * PPT_HEIGHT_PT;
const boxArea = widthPt * heightPt;
const safeText = (text || "").toString();
let weightedCount = Math.max(1, safeText.length * 0.8);
const fillFactor = (type === 'title') ? 0.9 : 0.7;
let calcSize = Math.sqrt((boxArea * fillFactor) / weightedCount);
let minSize = 12, maxSize = 80;
if (type === 'title') { minSize = 28; maxSize = 96; calcSize *= 1.3; }
else if (type === 'header') { minSize = 20; maxSize = 54; calcSize *= 1.1; }
else { minSize = 14; maxSize = 36; }
return Math.round(Math.min(maxSize, Math.max(minSize, calcSize)));
}
function enhanceBlocksColors(imgBase64, blocks) {
if (!blocks) return [];
return new Promise(resolve => {
const img = new Image();
img.crossOrigin = "Anonymous";
img.onload = () => {
const canvas = document.createElement('canvas');
canvas.width = img.width;
canvas.height = img.height;
const ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0);
const enhanced = blocks.map(b => {
let box = b.box_2d || [0, 0, 0, 0];
const y = Math.floor((box[0] / 1000) * img.height);
const x = Math.floor((box[1] / 1000) * img.width);
const h = Math.floor(((box[2] - box[0]) / 1000) * img.height);
const w = Math.floor(((box[3] - box[1]) / 1000) * img.width);
if (w <= 1 || h <= 1) return { ...b, bgColor: "#FFFFFF", textColor: "#000000", fontSize: 12, maskType: 'solid' };
const samplePad = 4;
const sx = Math.max(0, x - samplePad);
const sy = Math.max(0, y - samplePad);
const sw = Math.min(img.width - sx, w + (samplePad * 2));
const sh = Math.min(img.height - sy, h + (samplePad * 2));