{"id":121,"date":"2026-07-30T06:57:47","date_gmt":"2026-07-30T06:57:47","guid":{"rendered":"https:\/\/demensdeum.com\/blog\/2026\/07\/30\/aleka\/"},"modified":"2026-07-30T06:57:47","modified_gmt":"2026-07-30T06:57:47","slug":"aleka","status":"publish","type":"post","link":"https:\/\/demensdeum.com\/blog\/zh\/2026\/07\/30\/aleka\/","title":{"rendered":"Aleka \u662f\u4e00\u6b3e\u57fa\u4e8e Flutter \u6784\u5efa\u7684\u8de8\u5e73\u53f0\u7ed8\u56fe\u5e94\u7528"},"content":{"rendered":"<p><a href=\"https:\/\/demensdeum.com\/software\/aleka\/\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/demensdeum.com\/blog\/wp-content\/uploads\/2026\/07\/aleka.jpg\"\/><\/a><\/p>\n<p>Aleka \u662f\u4e00\u6b3e\u7528 Flutter \u7f16\u5199\u7684\u8f7b\u91cf\u7ea7\u3001\u5feb\u901f\u7ed8\u56fe\u5e94\u7528\u7a0b\u5e8f\u3002\u5b83\u9002\u7528\u4e8e\u4efb\u4f55\u5730\u65b9\uff1a\u6d4f\u89c8\u5668\u3001\u684c\u9762\uff08Windows\u3001macOS\u3001Linux\uff09\u548c\u79fb\u52a8\u8bbe\u5907\uff08iOS\u3001Android\uff09\u3002<\/p>\n<p>\u5f15\u64ce\u76d6\u4e0b\u662f\u7eaf\u7cb9\u7684 Dart\u3001Material 3 \u548c\u5bf9\u7ec6\u8282\u7684\u5173\u6ce8\u3002<\/p>\n<h2>\u673a\u4f1a<\/h2>\n<ul>\n<li><b>\u624b\u7ed8\u56fe\uff1a<\/b>\u901a\u8fc7\u4e8c\u6b21\u8d1d\u585e\u5c14\u63d2\u503c\u5b9e\u73b0\u5e73\u6ed1\u7b14\u753b\u3002<\/li>\n<li><b>15 \u79cd\u989c\u8272\u7684\u8c03\u8272\u677f\uff1a<\/b>\u901a\u8fc7\u89c6\u89c9\u6307\u793a\u5feb\u901f\u9009\u62e9\u3002<\/li>\n<li><b>\u753b\u7b14\u5927\u5c0f\uff1a<\/b>\u53ef\u4f7f\u7528\u6ed1\u5757\u5728 1 \u5230 30 \u50cf\u7d20\u4e4b\u95f4\u8fdb\u884c\u8c03\u6574\u3002<\/li>\n<li><b>\u64a4\u6d88\uff1a<\/b>\u540e\u9000\u4e00\u6b65\u3002<\/li>\n<li><b>\u6e05\u9664\u753b\u5e03\uff1a<\/b>\u53ea\u9700\u5355\u51fb\u4e00\u4e0b\u5373\u53ef\u3002<\/li>\n<li><b>\u6d2a\u6c34\u586b\u5145\uff1a<\/b>\u5177\u6709\u5e73\u6ed1\u8fb9\u7f18\u5bb9\u5dee\u7684 BFS\u3002<\/li>\n<li><b>\u4fdd\u5b58\uff1a<\/b>\u683c\u5f0f<code>.aleka<\/code> (JSON)\u3002<\/li>\n<li><b>\u52a0\u8f7d\uff1a<\/b>\u6253\u5f00\u4e4b\u524d\u4fdd\u5b58\u7684\u7ed8\u56fe\u5e76\u7ee7\u7eed\u3002<\/li>\n<li><b>PNG \u5bfc\u51fa\uff1a<\/b> \u4ee5 3 \u500d\u5206\u8fa8\u7387\u6355\u83b7\u753b\u5e03\u3002<\/li>\n<li><b>&#x1f3ac; \u52a8\u753b\u6a21\u5f0f\uff1a<\/b> \u5e26\u65f6\u95f4\u8f74\u7684\u9010\u5e27\u52a8\u753b\uff1a\n<ul>\n<li>\u6dfb\u52a0\u548c\u5220\u9664\u6846\u67b6\uff0c\u6bcf\u4e2a\u6846\u67b6\u90fd\u6709\u81ea\u5df1\u7684\u8bbe\u8ba1\u3002<\/li>\n<li>\u5e27\u6301\u7eed\u65f6\u95f4\u4ece 50 \u6beb\u79d2\u5230 5 \u79d2\u3002<\/li>\n<li>\u66f4\u6539 FPS\uff1a6\u30018\u300112\u300115\u300124\u300130 \u6216 60\u3002<\/li>\n<li>\u5bfc\u51fa\u4e3a MP4\uff08\u901a\u8fc7\u684c\u9762\u4e0a\u7684 ffmpeg\u3001\u6d4f\u89c8\u5668\u4e2d\u7684 ffmpeg.wasm\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<li><b>\u6df1\u8272\u548c\u6d45\u8272\u4e3b\u9898\uff1a<\/b>\u6750\u8d283\uff0c\u9075\u5faa\u7cfb\u7edf\u3002<\/li>\n<\/ul>\n<h2>\u4e3a\u4ec0\u4e48\u8981\u98a4\u52a8\uff1f<\/h2>\n<p>Flutter \u5141\u8bb8\u60a8\u4e3a\u516d\u4e2a\u5e73\u53f0\u7f16\u5199\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\uff0c\u800c\u65e0\u9700\u91cd\u590d\u4ee3\u7801\u3002 Aleka \u4ec5\u4f7f\u7528 Dart \u548c Flutter SDK \u7684\u672c\u673a\u529f\u80fd\u4ee5\u53ca\u6700\u5c11\u7684\u7b2c\u4e09\u65b9\u4f9d\u8d56\u9879\uff1a<code>file_picker<\/code>\u3001<code>image<\/code> \u7528\u4e8e\u5728\u586b\u5145\u65f6\u5904\u7406\u50cf\u7d20\u3001<code>ffmpeg_wasm<\/code> \u7528\u4e8e\u5728\u6d4f\u89c8\u5668\u4e2d\u5bfc\u51fa\u89c6\u9891\u3002<\/p>\n<h2>\u67b6\u6784<\/h2>\n<p>\u8be5\u9879\u76ee\u9075\u5faa\u7b80\u6d01\u67b6\u6784\u548c SOLID \u7684\u539f\u5219\uff1a<\/p>\n<ul>\n<li><b>PaintCanvasController<\/b> &#8211; \u901a\u8fc7\u4fa6\u542c\u5668\/\u89c2\u5bdf\u8005\u6a21\u5f0f\u63a7\u5236\u7b14\u5212\u548c\u586b\u5145\u7684\u72b6\u6001\u3002<\/li>\n<li><b>PaintToolbar<\/b> &#8211; \u8c03\u8272\u677f\u3001\u6ed1\u5757\u548c\u6309\u94ae\u7684 UI \u7ec4\u4ef6\u3002<\/li>\n<li><b>AlekaFile<\/b> &#8211; JSON\u3001PNG \u6355\u83b7\u4e2d\u7684\u5e8f\u5217\u5316\/\u53cd\u5e8f\u5217\u5316\u3002<\/li>\n<li><b>MovieController<\/b> &#8211; \u5e27\u548c\u52a8\u753b\u72b6\u6001\u7684\u6a21\u578b\u3002<\/li>\n<li><b>VideoExport<\/b> &#8211; \u5c01\u88c5 MP4 \u7f16\u7801\u903b\u8f91\uff08\u684c\u9762\/\u7f51\u7edc\uff09\u3002<\/li>\n<\/ul>\n<p>I\/O \u51fd\u6570\uff08<code>saveStrokes<\/code>\u3001<code>loadStrokes<\/code>\u3001<code>capturePng<\/code> \u7b49\uff09\u53ef\u6ce8\u5165 &#8211; \u5b83\u4eec\u53ef\u4ee5\u5728\u6d4b\u8bd5\u671f\u95f4\u7528\u6a21\u62df\u66ff\u6362\u3002\u8be5\u9879\u76ee\u670979\u4e2a\u6d4b\u8bd5\uff1a\u68c0\u67e5\u5e8f\u5217\u5316\u3001\u53d6\u6d88\u3001\u52a0\u8f7d\/\u4fdd\u5b58\u3001PNG\u548c\u89c6\u9891\u5bfc\u51fa\u3001\u5e27\u6a21\u578b\u548c\u65f6\u95f4\u8f74\u3002<\/p>\n<h2>\u6587\u4ef6\u683c\u5f0f.aleka<\/h2>\n<p><code>.aleka<\/code> \u6587\u4ef6\u662f\u53ef\u8bfb\u7684 JSON\uff0c\u53ef\u4ee5\u5728\u4efb\u4f55\u6587\u672c\u7f16\u8f91\u5668\u4e2d\u6253\u5f00\uff1a<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-unknown\" data-lang=\"unknown\"><code>  \"aleka\": \"1.0\",\n  \"strokes\": [\n    {\n      \"color\": 4278190080,\n      \"strokeWidth\": 3.0,\n      \"points\": [[100.0, 200.0], [150.0, 250.0]]\n    }\n  ]\n}\n<\/code><\/pre>\n<\/div>\n<p>\u6bcf\u4e2a\u7b14\u5212\u5b58\u50a8\u4e00\u79cd\u989c\u8272 (ARGB32)\u3001\u7c97\u7ec6\u548c\u70b9\u6570\u7ec4\u3002\u8be5\u683c\u5f0f\u7531 <code>aleka<\/code> \u5b57\u6bb5\u8fdb\u884c\u7248\u672c\u63a7\u5236\u3002<\/p>\n<h2>\u52a8\u753b\u6a21\u5f0f<\/h2>\n<p>\u4e3b\u8981\u529f\u80fd\u4e4b\u4e00\u662f\u5185\u7f6e\u7684\u9010\u5e27\u52a8\u753b\u7f16\u8f91\u5668\u3002\u60a8\u7ed8\u5236\u4e00\u4e2a\u6846\u67b6\uff0c\u6dfb\u52a0\u4e00\u4e2a\u65b0\u6846\u67b6\uff0c\u7ed8\u5236\u4e0b\u4e00\u4e2a\u6846\u67b6\uff0c\u4f9d\u6b64\u7c7b\u63a8\u3002\u65f6\u95f4\u7ebf\u663e\u793a\u7f29\u7565\u56fe\u5e76\u5141\u8bb8\u60a8\u66f4\u6539\u5e27\u7684\u987a\u5e8f\u548c\u6301\u7eed\u65f6\u95f4\u3002\u5b8c\u6210\u7684\u52a8\u753b\u53ef\u4ee5\u5bfc\u51fa\u4e3a MP4\u3002<\/p>\n<p>\u5bfc\u51fa\u7b97\u6cd5\u8fed\u4ee3\u6240\u6709\u5e27\uff0c\u901a\u8fc7 RepaintBoundary \u6355\u83b7\u5b83\u4eec\uff0c\u6536\u96c6 PNG \u5b57\u8282\u5e76\u5c06\u5b83\u4eec\u4f20\u8f93\u5230\u7f16\u7801\u5668\u3002\u5728\u684c\u9762\u4e0a\uff0c\u8c03\u7528\u7cfb\u7edf ffmpeg\uff0c\u5728\u6d4f\u89c8\u5668\u4e2d\uff0c\u4f7f\u7528 ffmpeg.wasm &#8211; ffmpeg \u5230 WebAssembly \u7684\u6210\u719f\u7aef\u53e3\uff0c\u76f4\u63a5\u5728\u6d4f\u89c8\u5668\u6c99\u7bb1\u4e2d\u5de5\u4f5c\u3002<\/p>\n<h2>\u6d2a\u6c34\u586b\u5145<\/h2>\n<p>\u586b\u5145\u5b9e\u73b0\u4f7f\u7528\u5bbd\u5ea6\u4f18\u5148\u641c\u7d22 (BFS) \u548c\u989c\u8272\u5bb9\u5dee (<code>_kFillTolerance = 1000<\/code>)\u3002\u8fd9\u4f7f\u60a8\u53ef\u4ee5\u6b63\u786e\u5904\u7406\u7b14\u753b\u7684\u5e73\u6ed1\u8fb9\u7f18 &#8211; \u586b\u5145\u4e0d\u4f1a\u8d85\u51fa\u8f6e\u5ed3\uff0c\u4f46\u4f1a\u6355\u83b7\u8fb9\u6846\u4e0a\u7684\u534a\u900f\u660e\u50cf\u7d20\u3002\u5bf9\u4e8e\u7a7a\u753b\u5e03\uff0c\u5c06\u521b\u5efa\u5b9e\u5fc3\u586b\u5145\uff0c\u65e0\u9700\u8fdb\u884c\u4e0d\u5fc5\u8981\u7684\u8ba1\u7b97\u3002<\/p>\n<h2>\u5c1d\u8bd5<\/h2>\n<p>Aleka \u53ef\u5728\u7f51\u7edc\u4e0a\u4f7f\u7528\u5e76\u4f5c\u4e3a\u672c\u673a\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\uff1a<\/p>\n<p><a href=\"https:\/\/demensdeum.com\/software\/aleka\/\"><b>demensdeum.com\/software\/aleka\/<\/b><\/a><\/p>\n<p>\u6e90\u4ee3\u7801\u5728 MIT \u8bb8\u53ef\u8bc1\u4e0b\u5f00\u653e\uff1a<\/p>\n<p><a href=\"https:\/\/github.com\/demensdeum\/Aleka\"><b>github.com\/demensdeum\/Aleka<\/b><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aleka \u662f\u4e00\u6b3e\u7528 Flutter \u7f16\u5199\u7684\u8f7b\u91cf\u7ea7\u3001\u5feb\u901f\u7ed8\u56fe\u5e94\u7528\u7a0b\u5e8f\u3002\u5b83\u9002\u7528\u4e8e\u4efb\u4f55\u5730\u65b9\uff1a\u6d4f\u89c8\u5668\u3001\u684c\u9762\uff08Windows\u3001macOS\u3001Linux\uff09\u548c\u79fb\u52a8\u8bbe\u5907\uff08iOS\u3001Android\uff09\u3002 \u5f15\u64ce\u76d6\u4e0b\u662f\u7eaf\u7cb9\u7684 Dart\u3001Material 3 \u548c\u5bf9\u7ec6\u8282\u7684\u5173\u6ce8\u3002 \u673a\u4f1a \u624b\u7ed8\u56fe\uff1a\u901a\u8fc7\u4e8c\u6b21\u8d1d\u585e\u5c14\u63d2\u503c\u5b9e\u73b0\u5e73\u6ed1\u7b14\u753b\u3002 15 \u79cd\u989c\u8272\u7684\u8c03\u8272\u677f\uff1a\u901a\u8fc7\u89c6\u89c9\u6307\u793a\u5feb\u901f\u9009\u62e9\u3002 \u753b\u7b14\u5927\u5c0f\uff1a\u53ef\u4f7f\u7528\u6ed1\u5757\u5728 1 \u5230 30 \u50cf\u7d20\u4e4b\u95f4\u8fdb\u884c\u8c03\u6574\u3002 \u64a4\u6d88\uff1a\u540e\u9000\u4e00\u6b65\u3002 \u6e05\u9664\u753b\u5e03\uff1a\u53ea\u9700\u5355\u51fb\u4e00\u4e0b\u5373\u53ef\u3002 \u6d2a\u6c34\u586b\u5145\uff1a\u5177\u6709\u5e73\u6ed1\u8fb9\u7f18\u5bb9\u5dee\u7684 BFS\u3002 \u4fdd\u5b58\uff1a\u683c\u5f0f.aleka (JSON)\u3002 \u52a0\u8f7d\uff1a\u6253\u5f00\u4e4b\u524d\u4fdd\u5b58\u7684\u7ed8\u56fe\u5e76\u7ee7\u7eed\u3002 PNG \u5bfc\u51fa\uff1a \u4ee5 3 \u500d\u5206\u8fa8\u7387\u6355\u83b7\u753b\u5e03\u3002 &#x1f3ac; 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