27chan
9 years ago
1 changed files with 182 additions and 0 deletions
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/* image-hover.js |
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* This script is copied almost verbatim from https://github.com/Pashe/8chanX/blob/2-0/8chan-x.user.js
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* All I did was remove the sprintf dependency and integrate it into 8chan's Options as opposed to Pashe's. |
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* I also changed initHover() to also bind on new_post. |
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* Thanks Pashe for using WTFPL. |
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*/ |
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if (active_page === "catalog" || active_page === "thread" || active_page === "index") { |
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$(document).on('ready', function(){ |
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if (window.Options && Options.get_tab('general')) { |
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Options.extend_tab("general", |
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"<fieldset><legend>Image hover</legend>" |
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+ ("<label class='image-hover' id='imageHover'><input type='checkbox' /> "+_('Image hover')+"</label>") |
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+ ("<label class='image-hover' id='catalogImageHover'><input type='checkbox' /> "+_('Image hover on catalog')+"</label>") |
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+ ("<label class='image-hover' id='imageHoverFollowCursor'><input type='checkbox' /> "+_('Image hover should follow cursor')+"</label>") |
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+ "</fieldset>"); |
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} |
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$('.image-hover').on('change', function(){ |
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var setting = $(this).attr('id'); |
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localStorage[setting] = $(this).children('input').is(':checked'); |
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}); |
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if (!localStorage.imageHover || !localStorage.catalogImageHover || !localStorage.imageHoverFollowCursor) { |
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localStorage.imageHover = 'false'; |
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localStorage.catalogImageHover = 'false'; |
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localStorage.imageHoverFollowCursor = 'false'; |
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} |
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if (getSetting('imageHover')) $('#imageHover>input').prop('checked', 'checked'); |
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if (getSetting('catalogImageHover')) $('#catalogImageHover>input').prop('checked', 'checked'); |
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if (getSetting('imageHoverFollowCursor')) $('#imageHoverFollowCursor>input').prop('checked', 'checked'); |
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function getFileExtension(filename) { //Pashe, WTFPL
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if (filename.match(/\.([a-z0-9]+)(&loop.*)?$/i) !== null) { |
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return filename.match(/\.([a-z0-9]+)(&loop.*)?$/i)[1]; |
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} else if (filename.match(/https?:\/\/(www\.)?youtube.com/)) { |
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return 'Youtube'; |
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} else { |
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return "unknown: " + filename; |
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} |
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} |
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function isImage(fileExtension) { //Pashe, WTFPL
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return ($.inArray(fileExtension, ["jpg", "jpeg", "gif", "png"]) !== -1); |
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} |
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function isVideo(fileExtension) { //Pashe, WTFPL
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return ($.inArray(fileExtension, ["webm", "mp4"]) !== -1); |
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} |
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function isOnCatalog() { |
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return window.active_page === "catalog"; |
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} |
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function isOnThread() { |
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return window.active_page === "thread"; |
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} |
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function getSetting(key) { |
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return (localStorage[key] == 'true'); |
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} |
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function initImageHover() { //Pashe, influenced by tux, et al, WTFPL
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if (!getSetting("imageHover") && !getSetting("catalogImageHover")) {return;} |
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var selectors = []; |
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if (getSetting("imageHover")) {selectors.push("img.post-image", "canvas.post-image");} |
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if (getSetting("catalogImageHover") && isOnCatalog()) { |
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selectors.push(".thread-image"); |
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$(".theme-catalog div.thread").css("position", "inherit"); |
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} |
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function bindEvents(el) { |
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$(el).find(selectors.join(", ")).each(function () { |
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if ($(this).parent().data("expanded")) {return;} |
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var $this = $(this); |
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$this.on("mousemove", imageHoverStart); |
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$this.on("mouseout", imageHoverEnd); |
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$this.on("click", imageHoverEnd); |
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}); |
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} |
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bindEvents(document.body); |
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$(document).on('new_post', function(e, post) { |
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bindEvents(post); |
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}); |
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} |
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function imageHoverStart(e) { //Pashe, anonish, WTFPL
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var hoverImage = $("#chx_hoverImage"); |
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if (hoverImage.length) { |
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if (getSetting("imageHoverFollowCursor")) { |
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var scrollTop = $(window).scrollTop(); |
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var imgY = e.pageY; |
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var imgTop = imgY; |
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var windowWidth = $(window).width(); |
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var imgWidth = hoverImage.width() + e.pageX; |
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if (imgY < scrollTop + 15) { |
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imgTop = scrollTop; |
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} else if (imgY > scrollTop + $(window).height() - hoverImage.height() - 15) { |
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imgTop = scrollTop + $(window).height() - hoverImage.height() - 15; |
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} |
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if (imgWidth > windowWidth) { |
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hoverImage.css({ |
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'left': (e.pageX + (windowWidth - imgWidth)), |
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'top' : imgTop, |
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}); |
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} else { |
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hoverImage.css({ |
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'left': e.pageX, |
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'top' : imgTop, |
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}); |
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} |
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hoverImage.appendTo($("body")); |
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} |
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return; |
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} |
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var $this = $(this); |
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var fullUrl; |
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if ($this.parent().attr("href").match("src")) { |
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fullUrl = $this.parent().attr("href"); |
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} else if (isOnCatalog()) { |
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fullUrl = $this.attr("data-fullimage"); |
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if (!isImage(getFileExtension(fullUrl))) {fullUrl = $this.attr("src");} |
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} |
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if (isVideo(getFileExtension(fullUrl))) {return;} |
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hoverImage = $('<img id="chx_hoverImage" src="'+fullUrl+'" />'); |
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if (getSetting("imageHoverFollowCursor")) { |
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var size = $this.parents('.file').find('.unimportant').text().match(/\b(\d+)x(\d+)\b/), |
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maxWidth = $(window).width(), |
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maxHeight = $(window).height(); |
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var scale = Math.min(1, maxWidth / size[1], maxHeight / size[2]); |
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hoverImage.css({ |
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"position" : "absolute", |
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"z-index" : 101, |
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"pointer-events": "none", |
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"width" : size[1] + "px", |
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"height" : size[2] + "px", |
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"max-width" : (size[1] * scale) + "px", |
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"max-height" : (size[2] * scale) + "px", |
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'left' : e.pageX, |
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'top' : imgTop, |
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}); |
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} else { |
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hoverImage.css({ |
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"position" : "fixed", |
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"top" : 0, |
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"right" : 0, |
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"z-index" : 101, |
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"pointer-events": "none", |
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"max-width" : "100%", |
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"max-height" : "100%", |
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}); |
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} |
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hoverImage.appendTo($("body")); |
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if (isOnThread()) {$this.css("cursor", "none");} |
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} |
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function imageHoverEnd() { //Pashe, WTFPL
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$("#chx_hoverImage").remove(); |
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} |
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initImageHover(); |
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}); |
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} |
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