有感觉前几天 livid 的提问，分享个 firefox/FireGestures 插件的截屏脚本

var path = "F:\\Desktop";
var canvas = content.document.createElement("canvas");
canvas.width = content.document.body.clientWidth;
canvas.height = content.document.body.clientHeight;
var ctx = canvas.getContext("2d");
ctx.drawWindow(content, 0, 0, canvas.width, canvas.height, "rgb(255,255,255)");
var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
file.initWithPath(path + "\\" + new Date().getTime() + ".png");
Components.classes["@mozilla.org/embedding/browser/nsWebBrowserPersist;1"].createInstance(Components.interfaces.nsIWebBrowserPersist).saveURI(Components.classes["@mozilla.org/network/io-service;1"].getService(Components.interfaces.nsIIOService).newURI(canvas.toDataURL(), null, null), null, null, null, null, file, null);
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F:\\Desktop是所存位置，我设定的是按住鼠标向下，向右向下的手势


原帖： http://tieba.baidu.com/p/1994076176?pid=26391826918&cid=26392798567#26392798567