{"id":7539,"date":"2018-05-04T00:00:11","date_gmt":"2018-05-03T16:00:11","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=7539"},"modified":"2019-08-13T19:45:09","modified_gmt":"2019-08-13T11:45:09","slug":"js-custom-gif-generate","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2018\/05\/js-custom-gif-generate\/","title":{"rendered":"\u7eaf\u524d\u7aef\u5b9e\u73b0\u53ef\u4f20\u56fe\u53ef\u5b57\u5e55\u53f0\u8bcd\u5b9a\u5236\u7684GIF\u8868\u60c5\u751f\u6210\u5668"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com\/wordpress\/?p=7539<\/a>
\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u4f46\u9700\u8981\u4fdd\u7559\u539f\u4f5c\u8005\u548c\u51fa\u5904\u3002<\/p>\n

\u4e00\u3001\u8fd9\u4e24\u5929\u505a\u4e86\u4e2a\u53ef\u4f20\u56fe\u53ef\u5199\u53f0\u8bcdGIF\u751f\u6210\u5668<\/h3>\n

\u8fd9\u4e24\u5929\u665a\u4e0a\u5728\u5bb6\u505a\u4e86\u4e2a\u53ef\u4ee5\u81ea\u5df1\u4f20\u56fe\uff0c\u53ef\u4ee5\u81ea\u5df1\u5199\u53f0\u8bcd\u7684GIF\u751f\u6210\u5668\u3002<\/p>\n

\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1aGif\u8868\u60c5\u81ea\u5b9a\u4e49\u5b57\u5e55\u5728\u7ebf\u751f\u6210\u5668<\/a><\/p>\n

\u53ef\u4ee5\u7528\u63d0\u4f9b\u7684\u6a21\u677f\u751f\u6210GIF\u8868\u60c5\uff0c\u4f8b\u5982\uff0c\u6211\u4eec\u9009\u62e9\u201c\u4eca\u5929\u7684\u98ce\u751a\u4e3a\u55a7\u95f9\u201d\uff0c\u6211\u4eec\u53ef\u4ee5\u81ea\u5df1\u4fee\u6539\u53f0\u8bcd\uff0c\u4fee\u6539GIF\u8fd9\u4e00\u5e27\u5ef6\u8fdf\u65f6\u95f4\u3002<\/p>\n

\"\u4eca\u5929\u7684\u98ce\u751a\u4e3a\u55a7\u95f9GIF\u8868\u60c5\u751f\u6210\"<\/p>\n

\u6d41\u91cf\u5f00\u9500\u4f24\u4e0d\u8d77\uff0c\u6a21\u677f\u56fe\u7247\u90fd\u662f\u81ea\u5df1\u4e3b\u673a\u505a\u56fe\u5e8a\uff0c\u820d\u4e0d\u5f97\u63d0\u4f9b\u8fc7\u591a\u56fe\u7247\u5e8f\u5217\uff0c\u56e0\u6b64\uff0c\u751f\u6210GIF\u7684\u7d20\u6750\u6389\u5e27\u6709\u4e9b\u4e25\u91cd\uff0c\u89c1\u8c05\u89c1\u8c05\uff0c\u611f\u53d7\u7cbe\u9ad3\uff0c\u611f\u53d7\u7cbe\u9ad3\u3002<\/p>\n

\u7136\u540e\uff0c\u751f\u6210GIF\u6548\u679c\u5c31\u662f\u4e0b\u9762\u56fe\u8fd9\u6837\uff1a<\/p>\n

\"\u751f\u6210\u7684\u55a7\u95f9\u98cegif\u6548\u679c\u56fe\"<\/p>\n

\u5982\u679c\u5acc\u5f03\u63d0\u4f9b\u7684\u6a21\u677f\u592a\u7b80\u964b\uff0c\u53ef\u4ee5\u81ea\u5df1\u4e0a\u4f20\u5e8f\u5217\u56fe\u7247DIY\uff0c\u4f8b\u5982\u4f7f\u7528\u4e0a\u4e00\u7bc7\u6587\u7ae0<\/a>\u4e2d\u7528\u5230\u7684\u7684\u56fe\u7247\u5e8f\u5217\u7d20\u6750\uff1a<\/p>\n

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\u7136\u540e\u586b\u5199\u53f0\u8bcd\uff1a\u201c\u7ed9\u4f60\u4e00\u4e2a\u98de\u543b\u201d\u201c\u4e48\u554a\u201d\uff0c\u7136\u540e\u751f\u6210\uff0c\u5c31\u6709\u4e0b\u9762\u8d28\u91cf\u4e0d\u9519\u7684GIF\u6548\u679c\u4e86\uff08\u70b9\u51fb\u64ad\u653e200\u591aK\uff09\uff1a<\/p>\n

\"\u6211\u7684\u98de\u543b\"<\/p>\n

\u91cd\u70b9\u662f\u8fd9\u4e2a\u5de5\u5177\u7eaf\u524d\u7aef\u751f\u6210\u7684<\/h4>\n

\u8868\u60c5\u751f\u6210\u5668\u5de5\u5177\u5f88\u591a\uff0c\u7b80\u5355\u7684\u5982\u9759\u6001\u56fe\u751f\u6210\u5668\uff0c\u9759\u6001\u56fe\u4e0a\u9762\u53f0\u8bcd\u53ef\u4ee5\u4fee\u6539\uff1b\u590d\u6742\u70b9\u7684\u52a8\u6001GIF\u8868\u60c5\u751f\u6210\u5668\uff0c\u4f8b\u5982\u53ef\u80fd\u6709\u4eba\u5df2\u7ecf\u7528\u8fc7\u7684\u201c\u8868\u60c5\u9505\u201d\uff1ahttps:\/\/sorry.xuty.tk\/sorry\/<\/p>\n

\"\u8868\u60c5DIY\"<\/p>\n

\u76ee\u524d\u5df2\u7ecf\u6709\u597d\u51e0\u5341\u4e2a\u6a21\u677f\u4e86\uff0c\u8bbf\u95ee\u91cf\u5e94\u8be5\u53ef\u4ee5\uff0c\u56e0\u4e3a\u6211\u770b\u5230guang gao\u90fd\u51fa\u6765\u4e86\u3002<\/p>\n

\u4f46\u662f\u5c0f\u5de5\u5177\u662f\u540e\u7aef\u56fe\u7247\u670d\u52a1\u4e3b\u5bfc\u5b9e\u73b0\u7684\uff0c\u4e8e\u662f\u5c31\u6709\u8fd9\u6837\u95ee\u9898\uff1a<\/p>\n

    \n
  1. \u670d\u52a1\u5668\u5f00\u9500\u4e0d\u5c0f\uff0c\u538b\u529b\u6bd4\u8f83\u5927\uff1b<\/li>\n
  2. \u53ea\u80fd\u7528\u5bf9\u65b9\u63d0\u4f9b\u7684\u6a21\u677f\u751f\u6210gif\u8868\u60c5\uff0c\u4e0d\u80fd\u4f7f\u7528\u81ea\u5df1\u7684\u81ea\u5b9a\u4e49\u7d20\u6750\uff0c\u4f8b\u5982\u65e0\u6cd5\u5b9e\u73b0\u4e00\u4e2a\u653e\u98de\u81ea\u6211\u7684\u201c\u98de\u543b\u201dGIF\u8868\u60c5\uff1b<\/li>\n<\/ol>\n

    \u5b9e\u9645\u4e0a\uff0c\u7eaf\u524d\u7aef\u5c31\u80fd\u641e\u5b9aGIF\u751f\u6210\uff0c\u8d44\u6e90\u5f00\u9500\u66f4\u5c0f\uff0c\u901f\u5ea6\u66f4\u5feb\uff0c\u66f4\u52a0\u7075\u6d3b\uff01<\/p>\n

    \u4e8c\u3001\u5982\u4f55JS\u7eaf\u524d\u7aefweb\u751f\u6210GIF\u56fe\u7247\u5462\uff1f<\/h3>\n

    \u672cGIF\u8868\u60c5\u751f\u6210\u5668\u6838\u5fc3\u6280\u672f\u6e90\u81ea\u8fd9\u4e2a\u9879\u76ee\uff1ahttps:\/\/github.com\/jnordberg\/gif.js<\/a><\/p>\n

    \u501f\u52a9Web Workers, File API\u548c\u7c7b\u578b\u6570\u7ec4\u5728\u6d4f\u89c8\u5668\u7aef\u8fdb\u884cGIF encode\uff0c\u4ece\u800c\u751f\u6210GIF\u56fe\u7247\u3002<\/p>\n

    \u8bed\u6cd5\u76f8\u5f53\u7b80\u5355\uff0c\u4e0b\u9762\u4ee3\u7801\u662f\u5b98\u65b9\u793a\u4f8b\uff0c\u6211\u7b80\u5355\u7ffb\u8bd1\u4e0b\uff1a<\/p>\n

    var gif = new GIF({\r\n  workers: 2,\r\n  quality: 10\r\n});\r\n\r\n\/\/ \u6dfb\u52a0\u56fe\u7247\u5143\u7d20<\/span>\r\ngif.addFrame(imageElement);\r\n\r\n\/\/ \u6216\u8005\u662fcanvas\u5143\u7d20<\/span>\r\ngif.addFrame(canvasElement, {delay: 200});\r\n\r\n\/\/ \u6216\u8005\u4ececanvas\u7684\u4e0a\u4e0b\u6587\u590d\u5236\u50cf\u7d20\u4fe1\u606f<\/span>\r\ngif.addFrame(ctx, {copy: true});\r\n\r\ngif.on('finished', function(blob) {\r\n  \/\/ \u8fd9\u91cc\u7684blob\u5c31\u662fgif\u56fe\u7247blod\u683c\u5f0f\u4fe1\u606f<\/span>\r\n  window.open(URL.createObjectURL(blob));\r\n});\r\n\r\ngif.render();<\/pre>\n
    \u4e09\u3001GIF\u751f\u6210\u5668\u4e2d\u7684\u5b57\u5e55\u53f0\u8bcd\u662f\u600e\u4e48\u52a0\u4e0a\u53bb\u7684\u5462\uff1f<\/h3>\n
    GIF\u751f\u6210\u5668\u4e2d\u7684\u5b57\u5e55\u53f0\u8bcd\u662f\u600e\u4e48\u52a0\u4e0a\u53bb\u7684\u5462\uff1f\u7b54\u6848\u662f\u4f7f\u7528canvas<\/code>\u7ed8\u5236\u7684\u3002<\/p>\n
    canvas\u5148\u4f7f\u7528drawImage()<\/code>\u65b9\u6cd5\u7ed8\u5236\u5e95\u56fe\uff0c\u7136\u540e\u628a\u8f93\u5165\u6846\u4e2d\u7684\u5bf9\u8bdd\u4fe1\u606f\u7ed8\u5236\u5728\u5e95\u56fe\u4e0a\u5c31\u597d\u4e86\u3002<\/p>\n
    \u62ff\u5176\u4e2d\u67d0\u4e00\u5e27\u4e3e\u4f8b\u793a\u610f\uff1a<\/p>\n
    var gif = new GIF({\r\n    width: width,\r\n    height: height\r\n});\r\n\/\/ \u753b\u5e03\u5143\u7d20<\/span>\r\nvar canvas = document.createElement('canvas');\r\nvar context = canvas.getContext('2d');\r\n\/\/ \u7ed8\u5236\u56fe\u7247<\/span>\r\ncontext.drawImage(img, 0, 0);\r\n\/\/ \u7ed8\u5236\u6587\u5b57<\/span>\r\ncontext.fillText(message, width \/ 2, height - 32);\r\n\/\/ \u4f5c\u4e3a\u5e27\u63d2\u5165GIF<\/span>\r\ngif.addFrame(context, {\r\n    delay: delay,\r\n   copy: true\r\n});<\/pre>\n
    \u56db\u3001\u672c\u5730\u4e0a\u4f20GIF\u5e27\u56fe\u7247\u5982\u4f55\u5904\u7406\u7684\uff1f<\/h3>\n
    \u672c\u5730\u4e0a\u4f20\u7d20\u6750\u56fe\u7247\u548c\u6a21\u677f\u63d0\u4f9b\u7684\u7c7b\u4f3c\uff0c\u53ea\u662f\u7d20\u6750\u56fe\u7247\u9884\u89c8\u65f6\u5019\u7684src<\/code>\u5730\u5740\u662fbase64\u5730\u5740\u3002<\/p>\n
    \u65e0\u8bba\u662f\u9009\u62e9\u4e0a\u4f20\u8fd8\u662f\u62d6\u62fd\u4e0a\u4f20\uff0c\u90fd\u53ef\u4ee5get\u5230\u56fe\u7247\u8fd9\u4e2a\u6587\u4ef6\u5bf9\u8c61\uff0c\u5047\u8bbe\u53d8\u91cf\u540d\u662ffile<\/code>\uff0c\u5219\u53ef\u4ee5\u501f\u52a9FileReader<\/code>\u5c06\u56fe\u7247\u6587\u4ef6\u8f6c\u6362\u6210\u53ef\u9884\u89c8\u6a21\u5f0f\uff1a<\/p>\n
    var reader = new FileReader();\r\nreader.onload = function(e) {\r\n    \/\/ e.target.result\u5c31\u662f\u56fe\u7247\u7684base64\u5730\u5740\u4fe1\u606f\r\n    \/\/ \u8ba9img\u7684src\u5c5e\u6027\u503c\u4e3ae.target.result\u56fe\u7247\u5373\u53ef\u5448\u73b0<\/span>\r\n}\r\nreader.readAsDataURL(file);<\/pre>\n
    \u63a5\u4e0b\u6765\u7684\u4ee3\u7801\u903b\u8f91\u5c31\u548c\u6a21\u677f\u56fe\u7247\u7684\u5904\u7406\u4e00\u6a21\u4e00\u6837\u4e86\u3002<\/p>\n
    \u4e94\u3001\u7ed3\u675f\u8bed<\/h3>\n
      \n
    1. \u672c\u5de5\u5177UI\u7ec4\u4ef6\u7531LuLu UI\u63d0\u4f9b\u652f\u6301<\/a>\uff0cLuLu UI \u2014\u2014 \u4f60\u95ee\u6211\u6709\u4ec0\u4e48\u4e0d\u540c\uff1f\u53ea\u662f\u66f4\u81ea\u7531\uff0c\u66f4\u7eaf\u7cb9\uff0c\u548c\u7528\u6237\u8d70\u5f97\u66f4\u8fd1\u3002<\/li>\n
    2. \u6b22\u8fce\u53cd\u9988\u4f7f\u7528\u4e2d\u9047\u5230\u7684\u95ee\u9898\uff0c\u6587\u7ae0\u8bc4\u8bba\uff0c\u6216\u8005\u5fae\u535a\u79c1\u4fe1<\/a>\u90fd\u53ef\u4ee5\u3002<\/li>\n
    3. \u672c\u5de5\u5177URL\u5730\u5740\u662f\uff1a\/sp\/gif\uff0c\u7279\u522b\u7684\uff08sp<\/strong>ecial\uff09gif\uff0c\u7279\u522b\u7684\u7231\u7ed9\u7279\u522b\u7684\u4f60~\u6211\u64e6\uff0c\u6211\u5c45\u7136\u4e0d\u81ea\u89c9\u5531\u8d77\u6765\u4e86~<\/li>\n
    4. \u5206\u4eab\u770b\u5230\u7684\u4e00\u4e2a\u5173\u4e8e\u5e27\u548c\u65f6\u95f4\u633a\u6709\u610f\u601d\u7684\u63a8\u6587\uff08\u65e5\u6587\u7ffb\u8bd1\u7248\uff09\uff1a\n
      \"\u5e27\u548c\u65f6\u95f4\"<\/p>\n
      \u6309\u7167\u4e0a\u56fe\u7684\u8bf4\u6cd5\uff0c\u6bcf\u5e27\u65f6\u95f4\u4e3a0.02\u79d2\uff0c\u4e5f\u5c31\u662f20\u6beb\u79d2\u6bcf\u5e27\uff0c\u63a5\u8fd1\u663e\u793a\u5668\u7684\u7ed8\u5236\u9891\u7387\uff0c\u54c8\u54c8\u54c8\u3002\u5bf9\u4e8eGIF\u6807\u7b7e\u56fe\u800c\u8a00\uff0c\u4e0d\u9700\u8981\u8fd9\u4e48\u9ad8\u7684\u5e27\u7387\uff0c\u6bcf\u5e2784\u6beb\u79d2\u7528\u6237\u4f53\u9a8c\u4e5f\u662f\u53ef\u4ee5\u63a5\u53d7\u7684\uff0c\u9891\u7387\u8fc7\u9ad8\u7684GIF\u4f53\u79ef\u4f1a\u5f88\u5927\uff0c\u6709\u7684\u751a\u81f3\u8fbe4~5M\uff0c\u5bf9\u4e8eweb\u73af\u5883\uff0c\u662f\u4e0d\u592a\u9002\u5408\u7684\u3002<\/li>\n<\/ol>\n
      \u4ee5\u4e0a\u4e3a\u672c\u6587\u5168\u90e8\u5185\u5bb9\uff0c\u611f\u8c22\u9605\u8bfb\uff01<\/p>\n
      <\/p>\n
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      \n\u672c\u6587\u5730\u5740\uff1a      http:\/\/www.zhangxinxu.com\/wordpress\/?p=7539<\/a><\/p>\n
      \uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u8fd9\u4e24\u5929\u665a\u4e0a\u5728\u5bb6\u81ea\u5df1\u505a\u4e86\u4e2a\u53ef\u4ee5\u4f20\u56fe\uff0c\u53ef\u4ee5\u5199\u53f0\u8bcd\u7684GIF\u8868\u60c5\u56fe\u751f\u6210\u5668\u3002\u53ef\u4ee5\u4f7f\u7528\u63d0\u4f9b\u7684\u6a21\u677f\uff0c\u4e5f\u53ef\u4ee5\u81ea\u5df1\u4f20\u56fe\u5236\u4f5c\uff0c\u5173\u952e\u662f\u7eaf\u524d\u7aef\u5b9e\u73b0\u7684\uff0c\u8fd9\u4e2a\u6709\u70b9\u5389\u5bb3\u4e86\uff0c\u6709\u5174\u8da3\u53ef\u4ee5\u8fdb\u6765\u770b\u770b\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[896,180],"tags":[710,872,53,1064,873,638,1191,168,466],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/7539"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=7539"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/7539\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=7539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=7539"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=7539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}