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vichan/js/inline-expanding.js
Markerov bc2257be08 scroll to thumb
scroll up to image if its top is out of view when shrunk.
Requires jQuery
2016-05-05 12:09:41 +02:00

112 lines
3.5 KiB
JavaScript

/*
* inline-expanding.js
* https://github.com/savetheinternet/Tinyboard/blob/master/js/inline-expanding.js
*
* Released under the MIT license
* Copyright (c) 2012-2013 Michael Save <savetheinternet@tinyboard.org>
* Copyright (c) 2013-2014 Marcin Łabanowski <marcin@6irc.net>
*
* Usage:
* $config['additional_javascript'][] = 'js/jquery.min.js';
* $config['additional_javascript'][] = 'js/inline-expanding.js';
*
*/
onready(function(){
var inline_expand_post = function() {
var link = this.getElementsByTagName('a');
for (var i = 0; i < link.length; i++) {
if (typeof link[i] == "object" && link[i].childNodes && typeof link[i].childNodes[0] !== 'undefined' && link[i].childNodes[0].src && link[i].childNodes[0].className.match(/post-image/) && !link[i].className.match(/file/)) {
link[i].onclick = function(e) {
var img, post_body, still_open;
var thumb = this.childNodes[0];
var padding = 5;
var boardlist = $('.boardlist')[0];
var loadImage = function(img, thumb) {
if (img.naturalWidth) {
thumb.style.display = 'none';
img.style.display = '';
}
else {
return thumb.parentNode.timeout = setTimeout(loadImage, 30, img, thumb);
}
};
if (thumb.className == 'hidden')
return false;
if (e.which == 2 || e.ctrlKey) //open in new tab
return true;
if (!this.dataset.expanded) {
this.parentNode.removeAttribute('style');
this.dataset.expanded = 'true';
if (thumb.tagName === 'CANVAS') {
this.removeChild(thumb);
thumb.style.display = 'block';
}
thumb.style.opacity = '0.4';
thumb.style.filter = 'alpha(opacity=40)';
img = document.createElement('img');
img.className = 'full-image';
img.setAttribute('src', this.href);
img.setAttribute('alt', 'Fullsized image');
img.style.display = 'none';
this.appendChild(img);
this.timeout = loadImage(img, thumb);
} else {
clearTimeout(this.timeout);
//scroll to thumb if not triggered by 'shrink all image'
if (e.target.className == 'full-image') {
post_body = $(e.target).parentsUntil('form > div').last();
still_open = post_body.find('.post-image').filter(function(){return $(this).parent().attr('data-expanded') == 'true'}).length;
//deal with differnt boards' menu styles
if ($(boardlist).css('position') == 'fixed')
padding += boardlist.getBoundingClientRect().height;
if (still_open > 1) {
if (e.target.getBoundingClientRect().top - padding < 0)
$('body').scrollTop($(e.target).parent().parent().offset().top - padding);
} else {
if (post_body[0].getBoundingClientRect().top - padding < 0)
$('body').scrollTop(post_body.offset().top - padding);
}
}
if (~this.parentNode.className.indexOf('multifile'))
this.parentNode.style.width = (parseInt(this.dataset.width)+40)+'px';
thumb.style.opacity = '';
thumb.style.display = '';
this.removeChild(thumb.nextSibling);
delete this.dataset.expanded;
delete thumb.style.filter;
if (localStorage.no_animated_gif === 'true' && typeof unanimate_gif === 'function') {
unanimate_gif(thumb);
}
}
return false;
};
}
}
};
if (window.jQuery) {
$('div[id^="thread_"]').each(inline_expand_post);
// allow to work with auto-reload.js, etc.
$(document).on('new_post', function(e, post) {
inline_expand_post.call(post);
});
} else {
inline_expand_post.call(document);
}
});