標籤：
做 IM 螢幕是少不了的，之前 windows 版本是調用的 qq 資料法的功能，這個版本又再次嘗試自己實現發現是可以的，getusermedia 的許可權很高，代碼如下
1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 2 "http://www.w3.org/TR/html4/loose.dtd"> 3 <html> 4 <head> 5 <title></title> 6 </head> 7 <body > 8 <video id=‘vd‘ onload="snap()"></video> 9 <input type=button value=snap onclick="snap()" />10 <script>11 12 function snap(){13 var constraints = {14 video: {15 mandatory: {16 maxWidth: window.screen.width,17 maxHeight: window.screen.height,18 maxFrameRate: 30,19 chromeMediaSource: ‘screen‘20 }21 }22 }23 // constraints = {video: true, audio: true};24 console.log(constraints);25 navigator.webkitGetUserMedia(constraints, function(localSource){26 console.log(localSource);27 vd.src = webkitURL.createObjectURL(localSource);28 vd.play();29 },function(err){30 console.log(‘error‘,err);31 })32 33 }34 35 </script>36 </body>37 </html>
可以把螢幕全部捕獲，別說 錄屏都可以
PS 高版本的 nw ，package.json 需要 "chromium-args": "--enable-usermedia-screen-capturing"
node-webkit 螢幕功能
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