ldr_with_feed_thumbnail.user.js

// ==UserScript==
// @name           LDR with site thumbnail
// @namespace      http://d.hatena.ne.jp/toby/
// @description    Show feed thumbnail in Livedoor Reader(or fastladder)
// @include        http://fastladder.com/reader/*
// @include        http://reader.livedoor.com/reader/*
// @version        0.1
// ==/UserScript==

// referenced by http://la.ma.la/blog/diary_200610182325.htm 
// based on http://d.hatena.ne.jp/tnx/20060716/1152998347
// based on http://tokyoenvious.xrea.jp/b/web/livedoor_reader_meets_hatebu.html

(function(){
	var w = (typeof unsafeWindow == 'undefined') ? window : unsafeWindow;
    
	var DEFAULT_THUMBNAIL_SIZE = {
		'Small': {width:  '70', height: '60' },
		'Medium': {width:  '90', height: '70' },
		'Large': {width:  '120', height: '90' },
	};
	var default_size = DEFAULT_THUMBNAIL_SIZE['Medium'];
	var THUMBNAIL_API_URL = [
		'http://open.thumbshots.org/image.pxf?url=',  // better?
		'http://images.websnapr.com/?url=',
		'http://capture.heartrails.com/?',
		'http://api.thumbalizr.com/?url=',
		'http://img.simpleapi.net/small/',   // better?
		'http://mozshot.nemui.org/shot?'
	];
	var default_thumbnail_api_url = THUMBNAIL_API_URL[4];

	var before_img = "";
	var img_css = "vertical-align: top; border: 0px solid;";
	
	w.channel_widgets.add('site_thumbnail', function(feed){
		return [before_img,
			'<img style="', img_css, '" src="',
			default_thumbnail_api_url,
			feed.channel.link,
			'" width="', default_size.width,
			'" height="', default_size.height,
			'">',
		].join("");
	}, "site thumbnail");
})();