{"id":10100,"date":"2021-09-12T17:12:07","date_gmt":"2021-09-12T09:12:07","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=10100"},"modified":"2021-09-12T17:12:07","modified_gmt":"2021-09-12T09:12:07","slug":"apng-maker-pause-play-ie","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2021\/09\/apng-maker-pause-play-ie\/","title":{"rendered":"APNG\u5728\u7ebf\u5236\u4f5c\u3001\u517c\u5bb9\u3001\u64ad\u653e\u548c\u6682\u505c"},"content":{"rendered":"<p>by <a href=\"https:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=10100\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=10100<\/a> \u946b\u7a7a\u95f4-\u946b\u751f\u6d3b<br \/>\n\u672c\u6587\u6b22\u8fce\u5206\u4eab\u4e0e\u805a\u5408\uff0c\u5168\u6587\u8f6c\u8f7d\u5c31\u4e0d\u5fc5\u4e86\uff0c\u5c0a\u91cd\u7248\u6743\uff0c\u5708\u5b50\u5c31\u8fd9\u4e48\u5927\uff0c\u82e5\u6025\u7528\u53ef\u4ee5\u8054\u7cfb\u6388\u6743\u3002<\/p>\n<p><script>window.wxShareImgUrl = 'https:\/\/www.zhangxinxu.com\/study\/image\/share\/202109-apng.jpg';if(!\/zhangxinxu\/.test(location.host)){document.body.addEventListener('mousedown',function(){location.href='https:\/\/www.zhangxinxu.com\/wordpress\/?p=10100'});}<\/script><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202109\/apng-cover.jpg\" width=\"484\" height=\"300\" alt=\"APNG\u5360\u4f4d\u56fe\" class=\"alignright clip thumb size-medium\" \/><\/p>\n<p>CSS\u52a8\u753b + background-position \u5b9a\u4f4d\u4e5f\u80fd\u5b9e\u73b0PNG\u56fe\u7247\u5e8f\u5217\u5e27\u7684\u52a8\u753b\u64ad\u653e\u6548\u679c\uff0c\u4f46\u662f\uff0c\u8fd9\u79cd\u6280\u672f\u5b9e\u73b0\u4e0d\u592a\u9002\u5408\u53d8\u6210\u4e00\u6b21\u6027\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u4e5f\u5c31\u662f\uff0c\u5982\u679c\u8bbe\u8ba1\u5e08\u4e0b\u6b21\u63d0\u4f9b\u53e6\u5916\u5c3a\u5bf8\u548c\u5927\u5c0f\u7684\u56fe\u7247\u5e8f\u5217\uff0c\u4e4b\u524d\u7684\u4ee3\u7801\u5c31\u4e0d\u80fd\u590d\u7528\u4e86\u3002<\/p>\n<p>\u6b64\u65f6\uff0cAPNG\u52a8\u56fe\u4f1a\u662f\u66f4\u597d\u7684\u9009\u62e9\uff0c\u5927\u5c0f\u3001\u64ad\u653e\u65f6\u673a\u7b49\u90fd\u662f\u53ef\u4ee5\u81ea\u5982\u63a7\u5236\uff0c\u56fe\u50cf\u8d44\u6e90\u672c\u8eab\u7684\u901f\u7387\u3001\u5c3a\u5bf8\u4ea4\u7ed9\u8bbe\u8ba1\u5e08\u63a7\u5236\uff0c\u4f7f\u5f97\u4e00\u5957\u4ee3\u7801\u5e94\u4ed8\u6240\u6709\u7684\u52a8\u56fe\u573a\u666f\u6210\u4e3a\u4e86\u53ef\u80fd\u3002<\/p>\n<p>\u5173\u4e8eAPNG\u56fe\u7247\u7684\u57fa\u672c\u77e5\u8bc6\u53ef\u4ee5\u53c2\u8003\u591a\u5e74\u524d\u6211\u5199\u7684\u8fd9\u7bc7\u6587\u7ae0\u201c<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=4363\">APNG\u5386\u53f2\u3001\u7279\u6027\u7b80\u4ecb<\/a>\u201d\uff0c\u8fd9\u91cc\u518d\u4ecb\u7ecd\u4e00\u4e9b\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u53ef\u80fd\u9700\u8981\u7528\u5230\u7684\u77e5\u8bc6\u4e0e\u5b9e\u73b0\u3002<\/p>\n<h3>\u4e00\u3001APNG\u5728\u7ebf\u5236\u4f5c<\/h3>\n<p>\u65e5\u5e38\u5f00\u53d1\uff0cAPNG\u591a\u662f\u5076\u7136\u4f7f\u7528\u4f7f\u7528\uff0c\u4e0b\u8f7d\u4e2a\u8f6f\u4ef6\u518d\u53bb\u8fdb\u884cAPNG\u5236\u4f5c\uff0c\u5c31\u663e\u5f97\u6bd4\u8f83\u9ebb\u70e6\u4e86\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u6211\u4e0a\u5468\u82b1\u4e862\u4e2a\u665a\u4e0a\u65f6\u95f4\u505a\u4e86\u4e2a\u514d\u8d39\u5728\u7ebf\u5408\u6210APNG\u52a8\u56fe\u7684\u5728\u7ebf\u5de5\u5177\uff0c\u5bfc\u5165\u56fe\u7247\u5e8f\u5217\u5c31\u53ef\u4ee5\u5728\u7ebf\u751f\u6210\uff0c\u652f\u6301\u8bbe\u7f6e\u6bcf\u4e00\u5e27\u7684\u65f6\u95f4\u95f4\u9694\u548c\u64ad\u653e\u6b21\u6570\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/sp\/apng\/\" rel=\"noopener\" target=\"_blank\" class=\"a_link\">APNG\u514d\u8d39\u5728\u7ebf\u5408\u6210\u4e0b\u8f7d\u5de5\u5177<\/a><\/p>\n<p>\u652f\u6301\u62d6\u62fd\u6539\u53d8\u56fe\u7247\u7cfb\u5217\u987a\u5e8f\uff0c\u4f7f\u7528\u622a\u56fe\u753b\u9762\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202109\/2021-09-12_135113.png\" width=\"400\" height=\"365\" alt=\"apng\u5236\u4f5c\u5de5\u5177\u622a\u56fe\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u6ce8\u610f\uff0c\u7531\u4e8e\u76ee\u524d\u5e38\u89c4\u7684\u56fe\u50cf\u9884\u89c8\u8f6f\u4ef6\u6ca1\u6709\u589e\u52a0\u5bf9APNG\u7684\u652f\u6301\uff0c\u56e0\u6b64\uff0c\u6253\u5f00\u540e\u5e76\u4e0d\u4f1a\u52a8\uff0c\u663e\u793a\u7684\u662fAPNG\u56fe\u7247\u7684\u7b2c\u4e00\u5e27\uff0c\u6b64\u65f6\u9700\u8981\u62d6\u5230\u6d4f\u89c8\u5668\u4e2d\u8fdb\u884c\u9884\u89c8\uff0cChrome\u6216\u8005Firefox\u6d4f\u89c8\u5668\u90fd\u662f\u53ef\u4ee5\u7684\u3002<\/p>\n<h3>\u4e8c\u3001IE\u517c\u5bb9APNG<\/h3>\n<p>APNG IE\u6d4f\u89c8\u5668\u662f\u4e0d\u652f\u6301\u7684\uff0c\u5177\u4f53\u89c1\u4e0b\u9762\u7684\u517c\u5bb9\u6027\u8868\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202109\/2021-09-12_152858.png\" width=\"637\" height=\"324\" alt=\"APNG\u517c\u5bb9\u6027\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u5982\u679c\u6d4f\u89c8\u5668\u4e0d\u652f\u6301APNG\uff0c\u4f1a\u4ee5\u666e\u901a\u7684PNG\u56fe\u7247\u663e\u793a\uff0c\u56e0\u6b64\uff0c\u5e76\u4e0d\u4f1a\u5f71\u54cd\u529f\u80fd\u7684\u5b9e\u73b0\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u5982\u679c\u9047\u5230\u6311\u5254\u7684\u4ea7\u54c1\u7ecf\u7406\uff0c\u6216\u8005\u9047\u5230\u6311\u5254\u7684\u8bbe\u8ba1\u5e08\uff0c\u975e\u8981\u8ba9\u4f60\u8ba9IE\/Edge\u6d4f\u89c8\u5668\u4e5f\u662f\u52a8\u753b\u64ad\u653e\uff0c\u5219\u53ef\u4ee5\u8bd5\u8bd5 apng-canvas \u8fd9\u4e2a\u9879\u76ee\uff1a<a href=\"https:\/\/github.com\/davidmz\/apng-canvas\" rel=\"noopener\" target=\"_blank\">https:\/\/github.com\/davidmz\/apng-canvas<\/a><\/p>\n<p>\u4f7f\u7528\u975e\u5e38\u7b80\u5355\uff0c\u5047\u8bbe\u9875\u9762\u4e2d\u6709\u4e2a <code>&lt;img&gt;<\/code> \u5143\u7d20\uff1a<\/p>\n<pre>&lt;img id=\"chip\" src=\".\/chip.png\"&gt;<\/pre>\n<p>\u662f\u9700\u8981\u5f15\u5165\u5bf9\u5e94\u7684 JS \u6587\u4ef6\uff0c\u7136\u540e\u6267\u884c\u6267\u884c\u4e0b\u9762\u7684\u4ee3\u7801\u5c31\u53ef\u4ee5\u8ba9\u5176\u5728IE\u6d4f\u89c8\u5668\u4e0b\u64ad\u653e\uff1a<\/p>\n<pre>&lt;script src=\".\/apng-canvas.min.js\"&gt;&lt;\/script&gt;\r\n&lt;script&gt;\r\nAPNG.ifNeeded().then(function() {\r\n    APNG.animateImage(chip);\r\n});\r\n&lt;\/script&gt;<\/pre>\n<p><span class=\"hidden\">\/\/zxx: \u5982\u679c\u4f60\u770b\u5230\u8fd9\u6bb5\u6587\u5b57\uff0c\u8bf4\u660e\u4f60\u73b0\u5728\u8bbf\u95ee\u662f\u4f53\u9a8c\u7cdf\u7cd5\u7684\u5783\u573e\u76d7\u7248\u7f51\u7ad9\uff0c\u4f60\u53ef\u4ee5\u8bbf\u95ee\u539f\u6587\u83b7\u5f97\u5f88\u597d\u7684\u4f53\u9a8c\uff1ahttps:\/\/www.zhangxinxu.com\/wordpress\/?p=10100\uff08\u4f5c\u8005\u5f20\u946b\u65ed\uff09<\/span><\/p>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202109\/apng-ie-play-demo.php\" rel=\"noopener\" target=\"_blank\">APNG\u52a8\u56fe\u5728IE\u6d4f\u89c8\u5668\u64ad\u653edemo<\/a><\/p>\n<p>\u5728IE11\u4e0b\u7684\u6548\u679c\u622a\u56fe\u5c31\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202109\/2021-09-12_155430.png\" width=\"370\" height=\"563\" alt=\"IE11\u4e0b\u7684\u6548\u679c\u622a\u56fe\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u5982\u679c\u6d4f\u89c8\u5668\u672c\u8eab\u652f\u6301APNG\uff0c\u5219\u4e0a\u9762\u7684\u4ee3\u7801\u5e76\u4e0d\u4f1a\u6267\u884c\uff0c\u56e0\u4e3a <code>APNG.ifNeeded()<\/code> \u65b9\u6cd5\u5224\u65ad\u4e86\u662f\u5426\u9700\u8981\u4f7f\u7528 canvas \u64ad\u653eAPNG\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u6709\u65f6\u5019\uff0c\u5c31\u7b97\u6d4f\u89c8\u5668\u652f\u6301 APNG\uff0c\u6211\u4eec\u4e5f\u5e0c\u671b\u4f7f\u7528 canvas \u64ad\u653e\uff0c\u4f8b\u5982 Safari \u6d4f\u89c8\u5668\u4e0b\uff0c\u5982\u679cAPNG \u5236\u4f5c\u7684\u65f6\u5019\u8bbe\u7f6e\u4e86\u64ad\u653e 1 \u6b21\uff0c\u53ef\u80fd\u4f1a\u64ad\u653e 2 \u6b21\uff0c\u6b64\u65f6\uff0c\u8981\u60f3\u5728\u6240\u6709\u6d4f\u89c8\u5668\u4e0b\u4fdd\u6301\u4e00\u81f4\uff0c\u4e5f\u9700\u8981\u4f7f\u7528canvas\u6a21\u62df\u64ad\u653e\u6548\u679c\u3002<\/p>\n<p>\u6b64\u65f6\uff0c\u76f4\u63a5\u4f7f\u7528\u4e0b\u9762\u7684\u4ee3\u7801\u5373\u53ef\uff1a<\/p>\n<pre>APNG.animateImage(chip);<\/pre>\n<p>\u5bf9\u4e86\uff0capng-canvas\u662fIE10\u4ee5\u4e0a\u6d4f\u89c8\u5668\u624d\u652f\u6301\uff0cIE9\u5e76\u4e0d\u652f\u6301\u3002<\/p>\n<h3>\u4e09\u3001APNG\u7684\u64ad\u653e\u4e0e\u6682\u505c<\/h3>\n<p>\u4f7f\u7528 APNG \u6a21\u62df\u67d0\u4e9b\u52a8\u6548\u7684\u65f6\u5019\uff0c\u53ef\u80fd\u9700\u8981\u624b\u52a8\u8bbe\u7f6e\u6682\u505c\u4e0e\u64ad\u653e\uff0c\u8fd9\u4e2a\u4e5f\u662f\u53ef\u4ee5\u5b9e\u73b0\u7684\uff0c\u4f7f\u7528apng-js\u8fd9\u4e2a\u9879\u76ee\uff1a<a href=\"https:\/\/github.com\/davidmz\/apng-js\" rel=\"noopener\" target=\"_blank\">https:\/\/github.com\/davidmz\/apng-js<\/a><\/p>\n<p>\u548c apng-canvas \u662f\u540c\u4e00\u4e2a\u4f5c\u8005\u3002<\/p>\n<h4>demo\u6f14\u793a<\/h4>\n<p>\u6b64\u9879\u76ee\u5728 ReadMe \u4e2d\u7684\u793a\u4f8b\u4e0d\u592a\u53cb\u597d\uff0c\u5bf9\u4e8e\u65b0\u4eba\u800c\u8a00\uff0c\u53ef\u80fd\u4e0d\u77e5\u9053\u8bf4\u7684\u4ec0\u4e48\u610f\u601d\uff0c\u53ef\u80fd\u8fd9\u4e2a\u539f\u56e0\uff0c\u6240\u4ee5 Star \u6570\u4e0d\u662f\u5f88\u9ad8\u5427\u3002<\/p>\n<p>\u6211\u7814\u7a76\u4e86\u4e0b\uff0capng-js \u4e5f\u662f\u652f\u6301\u76f4\u63a5\u5728 Web \u9875\u9762\u4e2d\u76f4\u8fde\u4f7f\u7528\u7684\uff0c\u7136\u540e\u6211\u5c31\u505a\u4e86\u4e2ademo\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202109\/apng-pause-stop-play-demo.php\" rel=\"noopener\" target=\"_blank\">APNG\u52a8\u56fe\u64ad\u653e\u4e0e\u6682\u505c\u63a7\u5236demo<\/a><\/p>\n<p>\u70b9\u51fb\u6309\u94ae\u53ef\u4ee5\u64ad\u653e\u4e0e\u6682\u505c APNG\uff0c\u8fd8\u53ef\u4ee5\u63a7\u5236\u64ad\u653e\u7684\u901f\u7387\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202109\/2021-09-12_161537.png\" width=\"400\" height=\"408\" alt=\"APNG \u6682\u505c\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<h4>\u5982\u4f55\u4f7f\u7528\uff1f<\/h4>\n<p>\u64ad\u653e\u4e0e\u6682\u505c\u529f\u80fd\u7684\u5b9e\u73b0\u8981\u6bd4\u517c\u5bb9IE\u9ebb\u70e6\u4e9b\u3002<\/p>\n<p>\u4e0b\u9762\u4ee3\u7801\u662f\u5b98\u65b9\u7684\u793a\u610f\uff1a<\/p>\n<pre>import parseAPNG from 'apng-js';\r\n\r\nconst apng = parseAPNG(buffer);\r\n<\/pre>\n<p>\u8fd9\u91cc\u4f8b\u5b50\u6f14\u793a\u7684\u662f\u5728\u5de5\u7a0b\u5f00\u53d1\u73af\u5883\u4e2d\u7684\u4f7f\u7528\uff0c\u5982\u679c\u76f4\u63a5\u5728\u6d4f\u89c8\u5668\u4e2d\u4f7f\u7528\uff0c\u5219\u9700\u8981\u8fd9\u4e48\u5904\u7406\uff1a<\/p>\n<ol>\n<li>\u5f15\u5165\u5bf9\u5e94\u7684 JS \u6587\u4ef6\uff0c\u4f8b\u5982\uff1a\n<pre>&lt;script src=\".\/apng-js\/index.js\"&gt;&lt;\/script&gt;<\/pre>\n<p>\u6b64JS\u9879\u76ee\u8d44\u6e90\u4e2d\u6ca1\u6709\uff0c\u9700\u8981\u6267\u884c<code>npm install apng-js<\/code>\u627e\u5230\u6b64\u6587\u4ef6\u3002<\/p>\n<\/li>\n<li>\u6267\u884c\u4e0b\u9762\u7684\u4ee3\u7801\uff0c\u6b64\u65f6 apng \u5c31\u662f\u5173\u952e\u6267\u884c\u5bf9\u8c61\u3002\n<pre>var parseAPNG = window[\"apng-js\"].default;\r\nconst apng = parseAPNG(buffer);<\/pre>\n<\/li>\n<\/ol>\n<p>apng\u5176\u5b9e\u662f\u4e2a\u7c7b\uff0c\u5305\u62ec\u4e0b\u9762\u8fd9\u4e9b\u5c5e\u6027\u548c\u65b9\u6cd5\uff1a<\/p>\n<pre>class APNG {\r\n    width: number \r\n    height: number \r\n    numPlays: number  <span style=\"color:green;\">\/\/ \u5faa\u73af\u6b21\u6570\uff0c0\u8868\u793a\u65e0\u9650\u5faa\u73af<\/span>\r\n    playTime: number  <span style=\"color:green;\">\/\/ \u4e00\u6b21\u6267\u884c\u7684\u603b\u6beb\u79d2\u6570<\/span>\r\n    frames: Frame[]   <span style=\"color:green;\">\/\/ \u6bcf\u5e27\u7684\u6570\u636e<\/span>\r\n\r\n    <span style=\"color:green;\">\/\/ \u65b9\u6cd5<\/span>\r\n    createImages(): Promise <span style=\"color:green;\">\/\/ \u4e3a\u6240\u6709\u5e27\u521b\u5efa\u56fe\u50cf\u5143\u7d20<\/span>\r\n    getPlayer(context: CanvasRenderingContext2D, autoPlay: boolean = false): Promise.&lt;Player&gt;\r\n        <span style=\"color:green;\">\/\/ \u521b\u5efa\u64ad\u653e\u5668<\/span>\r\n}<\/pre>\n<p>\u5728\u63a7\u5236\u64ad\u653e\u4e0e\u6682\u505c\u8fd9\u4e2a\u9700\u6c42\u4e0a\uff0c\u6211\u4eec\u9700\u8981\u7684\u662f <code>getPlayer()<\/code> \u65b9\u6cd5\u3002<\/p>\n<p>\u6211\u4eec\u521b\u5efa\u4e00\u4e2a canvas \u5143\u7d20\uff0c\u5176\u4e0a\u4e0b\u6587\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9 <code>getPlayer()<\/code> \u65b9\u6cd5\uff0c\u6b64\u65f6\u5c31\u83b7\u5f97\u4e86\u4e00\u4e2a\u64ad\u653e\u63a7\u5236\u5668\uff0c\u8c03\u7528\u63a7\u5236\u5668\u4e0a\u7684<code>play()<\/code>\u6216<code>pause()<\/code>\u65b9\u6cd5\uff0c\u5c31\u53ef\u4ee5\u63a7\u5236APNG\u7684\u64ad\u653e\u4e0e\u6682\u505c\u4e86\uff0c\u4f8b\u5982\uff0c\u6211\u505a\u7684\u8fd9\u4e2ademo\u9875\u9762\u7684\u5b9e\u73b0\u5c31\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<pre>var parseAPNG = window[\"apng-js\"].default;\r\n<span style=\"color:green;\">\/\/ \u64ad\u653e\u5668<\/span>\r\nvar player = null;\r\n<span style=\"color:green;\">\/\/ \u64ad\u653e\u901f\u7387<\/span>\r\nvar playbackRate = 1;\r\n<span style=\"color:green;\">\/\/ \u83b7\u53d6\u56fe\u7247\u8d44\u6e90<\/span>\r\nfetch(chip.src).then(function(response) {\r\n    response.arrayBuffer().then(function(buffer) {\r\n        var apng = parseAPNG(buffer);\r\n        <span style=\"color:green;\">\/\/ img \u66ff\u6362\u6210 canvas<\/span>\r\n        var canvas = document.createElement('canvas');\r\n        canvas.width = apng.width;\r\n        canvas.height = apng.height;\r\n        chip.after(canvas);\r\n        chip.remove();\r\n        <span style=\"color:green;\">\/\/ \u6267\u884c\u64ad\u653e<\/span>\r\n        apng.getPlayer(canvas.getContext('2d')).then(function (p) {\r\n            player = p;\r\n            player.playbackRate = playbackRate;\r\n            <span style=\"color:green;\">\/\/ \u5f00\u59cb\u64ad\u653e<\/span>\r\n            player.play();\r\n        });\r\n    });\r\n});<\/pre>\n<p>\u5176\u4e2d\u7684 <code>player<\/code> \u5c31\u53ef\u4ee5\u63a7\u5236\u64ad\u653e\u4e0e\u6682\u505c\uff0c\u66b4\u9732\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre>class Player {\r\n    context: CanvasRenderingContext2D\r\n    playbackRate: number = 1.0 \r\n           \r\n    currFrameNumber: number\r\n    currFrame: Frame\r\n    paused: boolean  \r\n    ended: boolean\r\n\r\n    <span style=\"color:green;\">\/\/ \u65b9\u6cd5<\/span>\r\n    play()\r\n    pause()\r\n    stop()\r\n    \r\n    renderNextFrame()\r\n}<\/pre>\n<p>\u56e0\u6b64\uff0c\u6682\u505c\u52a8\u753b\u53ea\u9700\u8981\u8bbe\u7f6e <code>player.pause()<\/code>\uff0c\u8bbe\u7f6e\u64ad\u653e\u901f\u7387\u4f7f\u7528 <code>player.playbackRate<\/code>\uff0c\u66f4\u5b8c\u6574\u7684\u4ee3\u7801\u5927\u5bb6\u53ef\u4ee5\u8bbf\u95ee<a href=\"https:\/\/www.zhangxinxu.com\/study\/202109\/apng-pause-stop-play-demo.php\" rel=\"noopener\" target=\"_blank\">demo\u9875\u9762<\/a>\u3002<\/p>\n<h4>\u5176\u4ed6<\/h4>\n<p>apng-js\u8fd8\u6709\u5f88\u591a\u5176\u4ed6\u7684\u80fd\u529b\uff0c\u5305\u62ec\u6267\u884c\u4e8b\u4ef6\u7684\u56de\u8c03\uff0c\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e APNG \u53ea\u64ad\u653e\u4e00\u6b21\uff0capng-js\u53ea\u6709\u80fd\u529b\u77e5\u9053\u4ec0\u4e48\u65f6\u5019\u52a8\u753b\u64ad\u653e\u7ed3\u675f\u7684\uff0c\u6b64\u65f6\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u505a\u5176\u4ed6\u4e00\u4e9b\u4e8b\u60c5\u3002<\/p>\n<p>\u6bcf\u4e00\u5e27\u7684\u64ad\u653e\u540c\u6837\u6709\u5bf9\u5e94\u7684\u4e8b\u4ef6\u63a5\u53e3\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u5bf9\u6bcf\u4e00\u5e27\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<p>\u7b49\u3002<\/p>\n<p>\u672c\u6587\u5c31\u4e0d\u5c55\u5f00\u4e86\uff0c\u5927\u5bb6\u6709\u5174\u8da3\uff0c\u53ef\u4ee5\u81ea\u884c\u7814\u7a76\u4e00\u756a\u3002<\/p>\n<h3>\u56db\u3001\u7ed3\u675f\u788e\u788e\u5ff5<\/h3>\n<p>\u4e0a\u4e00\u7bc7\u6587\u7ae0\u5230\u73b0\u5728\u63a5\u8fd120\u5929\uff0c\u5feb\u8981\u7834\u4e86\u6211\u65e0\u66f4\u65b0\u65e5\u671f\u8bb0\u5f55\u4e86\uff0c\u5728\u5e72\u561b\u5462\uff0c\u5fd9\u7740\u5199\u5c0f\u8bf4\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202109\/2021-09-12_164236.png\" width=\"702\" height=\"218\" alt=\"\u5c0f\u8bf4\u622a\u56fe\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u6bcf\u5929\u66f4\u65b0\u4e00\u7ae0\uff0c4\u6708\u4efd\u5199\u5230\u73b0\u5728\uff0c\u5df2\u7ecf\u5feb50\u4e07\u5b57\u4e86\u3002<\/p>\n<p>\u8bf4\u5b9e\u8bdd\uff0c\u5df2\u7ecf\u5f71\u54cd\u4e00\u4e9b\u66f4\u91cd\u8981\u7684\u4e8b\u60c5\u4e86\uff0c\u4f8b\u5982\u65b0\u4e66\u7684\u5ba3\u4f20\u554a\uff0c\u6587\u7ae0\u7684\u66f4\u65b0\u554a\uff0c\u7f51\u7ad9\u7684\u5efa\u8bbe\u554a\uff0c\u4f46\u662f\uff0c\u8981\u662f\u4e0d\u505a\uff0c\u5fc3\u91cc\u96be\u53d7\uff0c\u6240\u4ee5\uff0c\u7ee7\u7eed\u575a\u6301\u5427\u3002<\/p>\n<p>\u5c0f\u8bf4\u8fdb\u5ea6\u5927\u7ea660%\u7684\u6837\u5b50\uff0c\u6240\u4ee5\uff0c\u5b8c\u7ed3\u5927\u6982\u8fd8\u9700\u89814\u4e2a\u6708\uff0c\u660e\u5e74\u6625\u8282\u7ed3\u675f\uff0c\u6ca1\u6709\u7b7e\u7ea6\uff0c\u7248\u6743\u8fd8\u5728\u81ea\u5df1\u624b\u4e0a\u3002<\/p>\n<p>\u5e0c\u671b\u660e\u5e74\u518d\u56de\u8fc7\u5934\u770b\uff0c\u4f1a\u662f\u4e00\u6bb5\u4e0d\u9519\u7684\u8def\u7a0b\u3002<\/p>\n<p>\u626f\u8fdc\u4e86\uff0c\u611f\u8c22\u5927\u5bb6\u7684\u9605\u8bfb\uff0c\u5982\u679c\u60a8\u89c9\u5f97\u5185\u5bb9\u8fd8\u4e0d\u9519\uff0c\u6b22\u8fce\u5206\u4eab\u5230\u670b\u53cb\u5708\uff0c\u6216\u8005\u8f6c\u53d1\u5230\u5fae\u535a\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/2764.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<p>\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u6b22\u8fce\u5206\u4eab\uff0c\u52ff\u5168\u6587\u8f6c\u8f7d\uff0c\u5982\u679c\u5b9e\u5728\u559c\u6b22\uff0c\u53ef\u6536\u85cf\uff0c\u6c38\u4e0d\u8fc7\u671f\uff0c\u4e14\u4f1a\u53ca\u65f6\u66f4\u65b0\u77e5\u8bc6\u70b9\u53ca\u4fee\u6b63\u9519\u8bef\uff0c\u9605\u8bfb\u4f53\u9a8c\u4e5f\u66f4\u597d\u3002<br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=10100\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=10100<\/a><\/p>\n<p>\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202109\/apng-cover.jpg\" width=\"161\" height=\"100\" alt=\"APNG\u5360\u4f4d\u56fe\" class=\"alignright size-medium\" loading=\"lazy\" \/><\/p>\n<p>APNG\u7528\u8d77\u6765\u8fd8\u662f\u633a\u723d\u7684\uff0c\u6574\u4f53\u6765\u770b\uff0c\u8981\u6bd4CSS\u52a8\u753b+\u56fe\u7247\u5e8f\u5217\u5b9e\u73b0\u52a8\u753b\u8981\u66f4\u597d\uff0c\u672c\u6587\u5c31\u57fa\u4e8e\u5b9e\u9645\u5f00\u53d1\u7ecf\u9a8c\uff0c\u628a\u5982\u4f55\u63a7\u5236APNG\uff0c\u4f7f\u7528\u6ce8\u610f\u4e8b\u9879\u7b49\uff0c\u901a\u8fc7\u6587\u5b57\u63cf\u8ff0\u52a0\u6f14\u793a\u544a\u77e5\u5927\u5bb6\uff0c\u8ba9\u5927\u5bb6\u53ef\u4ee5\u5feb\u901f\u4e0a\u624b\u4f7f\u7528\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[945,53,10],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/10100"}],"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=10100"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/10100\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=10100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=10100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=10100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}