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4chan Archive Image Expander

Adds inline image expansion to 4chan archives.

2018-08-02 يوللانغان نەشرى. ئەڭ يېڭى نەشرىنى كۆرۈش.

  1. // ==UserScript==
  2. // @name           4chan Archive Image Expander
  3. // @description    Adds inline image expansion to 4chan archives.
  4. // @author         Hen Tie
  5. // @homepage       http://hen-tie.tumblr.com/
  6. // @namespace      https://greasyfork.org/en/users/8336
  7. // @include        /https?:\/\/(desuarchive.org|archived.moe)\/.*\/thread\/.*/
  8. // @grant          none
  9. // @require        https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js
  10. // @require        https://greasyfork.org/scripts/39415-jquery-initialize/code/jQuery%20Initialize.js?version=258071
  11. //// @icon           URL
  12. // @version        1.5
  13. // ==/UserScript==
  14. $(function () {
  15. 	//index all images for gallery modal
  16. 	//var fullImage = [];
  17. 	//var thumbnail = [];
  18. 	//var dialog = $("<modal></modal>");
  19. 	//$("body").append(dialog);
  20.  
  21. 	//$('a.thread_image_link').each(function() {
  22. 	//	fullImage.push('<img src="' + $(this).attr('href') + '" />');
  23. 	//	thumbnail.push('<img src="' + $(this).children('img').attr('src') + '" />');
  24. 	//});
  25. 	//$('modal').append(fullImage[0]).append(thumbnail[0]);
  26.  
  27. 	//catches image load event
  28. 	$.initialize('.init', function() {
  29. 		$(this).parent().removeClass('spinner');
  30. 	});
  31.  
  32. 	//insert download image links
  33. 	$('.post_file_filename').each(function() {
  34. 		$(this).attr('download',true);
  35. 	});
  36.  
  37.  
  38. 	$('<style type="text/css">.spinner:before{content:"";box-sizing:border-box;position:absolute;top:50%;left:50%;width:20px;height:20px;margin-top:-10px;margin-left:-10px;border-radius:50%;border-top:2px solid #CCC;border-right:2px solid transparent;animation:spinner 0.6s linear infinite}@keyframes spinner{to{transform:rotate(360deg)}}</style>').appendTo('head');
  39. 	//$('<style type="text/css">modal{display:block;position:fixed;top:0;left:0;overflow:auto;width:100%;height:20%;background:#000;}</style>').appendTo("head");
  40. 	//video settings
  41. 	var vidAttr = 'loop autoplay controls';
  42. 	var imgCSS = {
  43. 		'max-width': '100%',
  44. 		'height': 'auto'
  45. 	};
  46. 	var webmCSS = {
  47. 		'max-width': '100%',
  48. 		'height': 'auto'
  49. 	};
  50. 	//indicate webm thumbnail
  51. 	$('.post_file_filename[href$=".webm"]').parent().next().find('.post_image').css('border', '3px solid #5f89ac');
  52.  
  53. 	//prevent weird wrapping around expanded images
  54. 	$('.theme_default .post header').css('display', 'inline-block');
  55.  
  56. 	$('.thread_image_box a').on('click', function (e) {
  57. 		var myHref = $(this).attr('href');
  58. 		var myHeight = $(this).children('img').outerHeight();
  59. 		var myWidth = $(this).children('img').outerWidth();
  60. 		$(this).parent().addClass('spinner').css({
  61. 			'min-height': myHeight,
  62. 			'min-width': myWidth,
  63. 			'position': 'relative'
  64. 		});
  65.  
  66. 		//new elements containing full size href as src
  67. 		var img = $('<img />').attr({
  68. 			'src': myHref,
  69. 			'class': 'openItem'
  70. 		}).css(imgCSS).load(function(){
  71. 			$(this).addClass('init');
  72. 		});
  73.  
  74.  
  75. 		var webm = $('<video style="background-color: #222;" poster="data:image/gif,AAAA" ' + vidAttr + ' id="vid"><source type="video/webm" src="' + myHref + '"/></video>').attr('class', 'openItem').css(webmCSS);
  76. 		//check filetype, hide thumbnail, insert full size file
  77. 		if (myHref.match(/.gif$|.png$|.jpg$/g)) {
  78. 			e.preventDefault();
  79. 			$(this).fadeTo('fast', 0, function () {
  80. 				$(this).hide();
  81. 				$(this).after(img);
  82. 			});
  83. 		} else if (myHref.match(/.webm$/g)) {
  84. 			e.preventDefault();
  85. 			$(this).hide();
  86. 			$(this).after(webm);
  87. 			var vid = document.getElementById("vid");
  88. 			//video proven to be loadable, cancel spinner
  89. 			vid.ondurationchange = function() {
  90. 				$(this).parent().removeClass('spinner');
  91. 			};
  92. 		} else {
  93. 			console.log('"4chan Archive Image Expander"\nUnsupported filetype, please report.\nSee @homepage or @namespace for contact info.');
  94. 		}
  95. 		//if src is broken insert placeholder, stop infinite spinner
  96. 		setTimeout(function(){
  97. 			var checkBroken = $('.openItem');
  98. 			if (checkBroken.width() === 16 && checkBroken.height() === 16) {
  99. 				checkBroken.addClass('init').attr('src','http://via.placeholder.com/'+myWidth + 'x' + myHeight+'/1d1f21/888888?text=ERR.');
  100. 				console.log('broken image');
  101. 			} else if (checkBroken.is('video')) {
  102. 				//if readyState has no metadata
  103. 				if (vid.readyState === 0) {
  104. 					checkBroken.addClass('init');
  105. 					console.log('broken video');
  106. 				}
  107. 			} else {
  108. 				return false;
  109. 			}
  110. 		}, 3000);
  111. 	});
  112.  
  113. 	//on reclick, remove full size, show thumbnail again
  114. 	$(document).on('click', '.openItem', function () {
  115. 		//video not loaded or timed out, remove spinner on close
  116. 		if ($(this).is('video')) {
  117. 			$(this).parent('.spinner').removeClass('spinner');
  118. 		}
  119. 		$(this).prev().show().fadeTo(0, 1);
  120. 		$(this).remove();
  121. 	});
  122. });