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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 | /** * ClassroomPreviewer - 课堂预览器组件 * * 预览 classroom-generator Pipeline 生成的课堂内容： * - 幻灯片导航 * - 大纲视图 * - 场景切换 * - 全屏播放模式 * - AI 教师讲解展示 */ import { useState, useCallback, useEffect } from 'react'; import { ChevronLeft, ChevronRight, Play, Pause, Maximize, Minimize, List, Grid, Volume2, VolumeX, Download, Share2, } from 'lucide-react'; import { useToast } from './ui/Toast'; // === Types === export interface ClassroomScene { id: string; title: string; type: 'title' | 'content' | 'quiz' | 'summary' | 'interactive'; content: { heading?: string; bullets?: string[]; image?: string; explanation?: string; quiz?: { question: string; options: string[]; answer: number; }; }; narration?: string; duration?: number; // seconds } export interface ClassroomData { id: string; title: string; subject: string; difficulty: '初级' | '中级' | '高级'; duration: number; // minutes scenes: ClassroomScene[]; outline: { sections: { title: string; scenes: string[]; }[]; }; createdAt: string; } interface ClassroomPreviewerProps { data: ClassroomData; onClose?: () => void; onExport?: (format: 'pptx' | 'html' | 'pdf') => void; } // === Sub-Components === interface SceneRendererProps { scene: ClassroomScene; isPlaying: boolean; showNarration: boolean; } function SceneRenderer({ scene, showNarration }: SceneRendererProps) { const renderContent = () => { switch (scene.type) { case 'title': return ( <div className="flex flex-col items-center justify-center h-full text-center p-8"> <h1 className="text-4xl font-bold text-white mb-4"> {scene.content.heading || scene.title} </h1> {scene.content.bullets && ( <p className="text-xl text-white/80"> {scene.content.bullets[0]} </p> )} </div> ); case 'content': return ( <div className="p-8"> <h2 className="text-3xl font-bold text-white mb-6"> {scene.content.heading || scene.title} </h2> {scene.content.bullets && ( <ul className="space-y-4"> {scene.content.bullets.map((bullet, index) => ( <li key={index} className="flex items-start gap-3 text-lg text-white/90" > <span className="flex-shrink-0 w-6 h-6 rounded-full bg-blue-500 flex items-center justify-center text-sm font-medium"> {index + 1} </span> <span>{bullet}</span> </li> ))} </ul> )} {scene.content.image && ( <div className="mt-6"> <img src={scene.content.image} alt={scene.title} className="max-h-48 rounded-lg shadow-lg" /> </div> )} </div> ); case 'quiz': return ( <div className="p-8"> <h2 className="text-2xl font-bold text-white mb-6"> 📝 小测验 </h2> {scene.content.quiz && ( <div className="space-y-4"> <p className="text-xl text-white"> {scene.content.quiz.question} </p> <div className="grid grid-cols-1 md:grid-cols-2 gap-3 mt-4"> {scene.content.quiz.options.map((option, index) => ( <button key={index} className="p-4 bg-white/10 hover:bg-white/20 rounded-lg text-left text-white transition-colors" > <span className="font-medium mr-2"> {String.fromCharCode(65 + index)}. </span> {option} </button> ))} </div> </div> )} </div> ); case 'summary': return ( <div className="p-8"> <h2 className="text-3xl font-bold text-white mb-6"> 📋 总结 </h2> {scene.content.bullets && ( <ul className="space-y-3"> {scene.content.bullets.map((bullet, index) => ( <li key={index} className="flex items-center gap-2 text-lg text-white/90" > <span className="text-green-400">✓</span> {bullet} </li> ))} </ul> )} </div> ); default: return ( <div className="p-8"> <h2 className="text-2xl font-bold text-white"> {scene.title} </h2> <p className="text-white/80 mt-4">{scene.content.explanation}</p> </div> ); } }; return ( <div className="relative h-full bg-gradient-to-br from-blue-600 via-purple-600 to-indigo-700"> {/* Scene Content */} <div className="h-full overflow-auto"> {renderContent()} </div> {/* Narration Overlay */} {showNarration && scene.narration && ( <div className="absolute bottom-0 left-0 right-0 bg-black/70 p-4"> <div className="flex items-start gap-3"> <div className="flex-shrink-0 w-10 h-10 rounded-full bg-blue-500 flex items-center justify-center"> <Volume2 className="w-5 h-5 text-white" /> </div> <p className="text-white/90 text-sm leading-relaxed"> {scene.narration} </p> </div> </div> )} </div> ); } interface OutlinePanelProps { outline: ClassroomData['outline']; scenes: ClassroomScene[]; currentIndex: number; onSelectScene: (index: number) => void; } function OutlinePanel({ outline, scenes, currentIndex, onSelectScene, }: OutlinePanelProps) { return ( <div className="h-full overflow-auto bg-gray-50 dark:bg-gray-800 p-4"> <h3 className="text-sm font-semibold text-gray-700 dark:text-gray-300 mb-3"> 课程大纲 </h3> <div className="space-y-2"> {outline.sections.map((section, sectionIndex) => ( <div key={sectionIndex}> <p className="text-xs font-medium text-gray-500 dark:text-gray-400 mb-1"> {section.title} </p> <div className="space-y-1"> {section.scenes.map((sceneId) => { const globalIndex = scenes.findIndex(s => s.id === sceneId); const isActive = globalIndex === currentIndex; const scene = scenes.find(s => s.id === sceneId); return ( <button key={sceneId} onClick={() => onSelectScene(globalIndex)} className={`w-full text-left px-3 py-2 rounded-md text-sm transition-colors ${ isActive ? 'bg-blue-100 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300' : 'hover:bg-gray-100 dark:hover:bg-gray-700 text-gray-600 dark:text-gray-300' }`} > <span className="truncate">{scene?.title || sceneId}</span> </button> ); })} </div> </div> ))} </div> </div> ); } // === Main Component === export function ClassroomPreviewer({ data, onExport, }: ClassroomPreviewerProps) { const [currentSceneIndex, setCurrentSceneIndex] = useState(0); const [isPlaying, setIsPlaying] = useState(false); const [showNarration, setShowNarration] = useState(true); const [showOutline, setShowOutline] = useState(true); const [isFullscreen, setIsFullscreen] = useState(false); const [viewMode, setViewMode] = useState<'slides' | 'grid'>('slides'); const { toast } = useToast(); const currentScene = data.scenes[currentSceneIndex]; const totalScenes = data.scenes.length; // Navigation const goToScene = useCallback((index: number) => { if (index >= 0 && index < totalScenes) { setCurrentSceneIndex(index); } }, [totalScenes]); const nextScene = useCallback(() => { goToScene(currentSceneIndex + 1); }, [currentSceneIndex, goToScene]); const prevScene = useCallback(() => { goToScene(currentSceneIndex - 1); }, [currentSceneIndex, goToScene]); // Auto-play useEffect(() => { if (!isPlaying) return; const duration = currentScene?.duration ? currentScene.duration * 1000 : 5000; const timer = setTimeout(() => { if (currentSceneIndex < totalScenes - 1) { nextScene(); } else { setIsPlaying(false); toast('课堂播放完成', 'success'); } }, duration); return () => clearTimeout(timer); }, [isPlaying, currentSceneIndex, currentScene, totalScenes, nextScene, toast]); // Keyboard navigation useEffect(() => { const handleKeyDown = (e: KeyboardEvent) => { switch (e.key) { case 'ArrowRight': case ' ': e.preventDefault(); nextScene(); break; case 'ArrowLeft': e.preventDefault(); prevScene(); break; case 'Escape': if (isFullscreen) { setIsFullscreen(false); } break; } }; window.addEventListener('keydown', handleKeyDown); return () => window.removeEventListener('keydown', handleKeyDown); }, [nextScene, prevScene, isFullscreen]); // Fullscreen toggle const toggleFullscreen = () => { setIsFullscreen(!isFullscreen); }; // Export handler const handleExport = (format: 'pptx' | 'html' | 'pdf') => { if (onExport) { onExport(format); } else { toast(`导出 ${format.toUpperCase()} 功能开发中...`, 'info'); } }; return ( <div className={`bg-white dark:bg-gray-900 rounded-lg shadow-xl overflow-hidden ${ isFullscreen ? 'fixed inset-0 z-50 rounded-none' : 'max-w-5xl w-full' }`}> {/* Header */} <div className="flex items-center justify-between p-4 border-b border-gray-200 dark:border-gray-700"> <div> <h2 className="text-lg font-semibold text-gray-900 dark:text-white"> {data.title} </h2> <p className="text-sm text-gray-500 dark:text-gray-400"> {data.subject} · {data.difficulty} · {data.duration} 分钟 </p> </div> <div className="flex items-center gap-2"> <button onClick={() => handleExport('pptx')} className="flex items-center gap-1.5 px-3 py-1.5 text-sm bg-orange-100 dark:bg-orange-900/30 text-orange-700 dark:text-orange-300 rounded-md hover:bg-orange-200 dark:hover:bg-orange-900/50 transition-colors" > <Download className="w-4 h-4" /> PPTX </button> <button onClick={() => handleExport('html')} className="flex items-center gap-1.5 px-3 py-1.5 text-sm bg-blue-100 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 rounded-md hover:bg-blue-200 dark:hover:bg-blue-900/50 transition-colors" > <Share2 className="w-4 h-4" /> HTML </button> </div> </div> {/* Main Content */} <div className="flex h-[500px]"> {/* Outline Panel */} {showOutline && ( <div className="w-64 border-r border-gray-200 dark:border-gray-700 flex-shrink-0"> <OutlinePanel outline={data.outline} scenes={data.scenes} currentIndex={currentSceneIndex} onSelectScene={goToScene} /> </div> )} {/* Slide Area */} <div className="flex-1 flex flex-col"> {/* Scene Renderer */} <div className="flex-1 relative"> {viewMode === 'slides' ? ( <SceneRenderer scene={currentScene} isPlaying={isPlaying} showNarration={showNarration} /> ) : ( <div className="h-full overflow-auto p-4 bg-gray-100 dark:bg-gray-800"> <div className="grid grid-cols-3 gap-3"> {data.scenes.map((scene, index) => ( <button key={scene.id} onClick={() => goToScene(index)} className={`aspect-video rounded-lg overflow-hidden border-2 transition-colors ${ index === currentSceneIndex ? 'border-blue-500' : 'border-transparent hover:border-gray-300 dark:hover:border-gray-600' }`} > <div className="h-full bg-gradient-to-br from-blue-600 to-purple-600 p-2"> <p className="text-xs text-white font-medium truncate"> {scene.title} </p> </div> </button> ))} </div> </div> )} </div> {/* Control Bar */} <div className="flex items-center justify-between p-3 border-t border-gray-200 dark:border-gray-700 bg-gray-50 dark:bg-gray-800"> {/* Left Controls */} <div className="flex items-center gap-2"> <button onClick={() => setShowOutline(!showOutline)} className={`p-2 rounded-md transition-colors ${ showOutline ? 'bg-blue-100 dark:bg-blue-900/30 text-blue-600 dark:text-blue-400' : 'hover:bg-gray-100 dark:hover:bg-gray-700 text-gray-600 dark:text-gray-300' }`} title="大纲" > <List className="w-5 h-5" /> </button> <button onClick={() => setViewMode(viewMode === 'slides' ? 'grid' : 'slides')} className="p-2 hover:bg-gray-100 dark:hover:bg-gray-700 rounded-md text-gray-600 dark:text-gray-300" title={viewMode === 'slides' ? '网格视图' : '幻灯片视图'} > <Grid className="w-5 h-5" /> </button> </div> {/* Center Controls */} <div className="flex items-center gap-3"> <button onClick={prevScene} disabled={currentSceneIndex === 0} className="p-2 hover:bg-gray-100 dark:hover:bg-gray-700 rounded-md text-gray-600 dark:text-gray-300 disabled:opacity-50" > <ChevronLeft className="w-5 h-5" /> </button> <button onClick={() => setIsPlaying(!isPlaying)} className="p-3 bg-blue-600 hover:bg-blue-700 text-white rounded-full transition-colors" > {isPlaying ? ( <Pause className="w-5 h-5" /> ) : ( <Play className="w-5 h-5" /> )} </button> <button onClick={nextScene} disabled={currentSceneIndex === totalScenes - 1} className="p-2 hover:bg-gray-100 dark:hover:bg-gray-700 rounded-md text-gray-600 dark:text-gray-300 disabled:opacity-50" > <ChevronRight className="w-5 h-5" /> </button> <span className="text-sm text-gray-500 dark:text-gray-400 min-w-[60px] text-center"> {currentSceneIndex + 1} / {totalScenes} </span> </div> {/* Right Controls */} <div className="flex items-center gap-2"> <button onClick={() => setShowNarration(!showNarration)} className={`p-2 rounded-md transition-colors ${ showNarration ? 'bg-blue-100 dark:bg-blue-900/30 text-blue-600 dark:text-blue-400' : 'hover:bg-gray-100 dark:hover:bg-gray-700 text-gray-600 dark:text-gray-300' }`} title={showNarration ? '隐藏讲解' : '显示讲解'} > {showNarration ? ( <Volume2 className="w-5 h-5" /> ) : ( <VolumeX className="w-5 h-5" /> )} </button> <button onClick={toggleFullscreen} className="p-2 hover:bg-gray-100 dark:hover:bg-gray-700 rounded-md text-gray-600 dark:text-gray-300" title={isFullscreen ? '退出全屏' : '全屏'} > {isFullscreen ? ( <Minimize className="w-5 h-5" /> ) : ( <Maximize className="w-5 h-5" /> )} </button> </div> </div> </div> </div> </div> ); } export default ClassroomPreviewer; |