7a9b801a79
Introduce $.fn.lcd - displaying languages by categories. Added the jquery.viewport.js module by Mika Tuupola (MIT license). More tests for language utils. Change-Id: I804b6da8ab0a2d518e17ae8bbd35e1c1da4bab3f
59 lines
1.9 KiB
JavaScript
59 lines
1.9 KiB
JavaScript
/*
|
|
* Viewport - jQuery selectors for finding elements in viewport
|
|
*
|
|
* Copyright (c) 2008-2009 Mika Tuupola
|
|
*
|
|
* Licensed under the MIT license:
|
|
* http://www.opensource.org/licenses/mit-license.php
|
|
*
|
|
* Project home:
|
|
* http://www.appelsiini.net/projects/viewport
|
|
*
|
|
*/
|
|
(function($) {
|
|
|
|
$.belowthefold = function(element, settings) {
|
|
var fold = $(window).height() + $(window).scrollTop();
|
|
return fold <= $(element).offset().top - settings.threshold;
|
|
};
|
|
|
|
$.abovethetop = function(element, settings) {
|
|
var top = $(window).scrollTop();
|
|
return top >= $(element).offset().top + $(element).height() - settings.threshold;
|
|
};
|
|
|
|
$.rightofscreen = function(element, settings) {
|
|
var fold = $(window).width() + $(window).scrollLeft();
|
|
return fold <= $(element).offset().left - settings.threshold;
|
|
};
|
|
|
|
$.leftofscreen = function(element, settings) {
|
|
var left = $(window).scrollLeft();
|
|
return left >= $(element).offset().left + $(element).width() - settings.threshold;
|
|
};
|
|
|
|
$.inviewport = function(element, settings) {
|
|
return !$.rightofscreen(element, settings) && !$.leftofscreen(element, settings) && !$.belowthefold(element, settings) && !$.abovethetop(element, settings);
|
|
};
|
|
|
|
$.extend($.expr[':'], {
|
|
"below-the-fold": function(a, i, m) {
|
|
return $.belowthefold(a, {threshold : 0});
|
|
},
|
|
"above-the-top": function(a, i, m) {
|
|
return $.abovethetop(a, {threshold : 0});
|
|
},
|
|
"left-of-screen": function(a, i, m) {
|
|
return $.leftofscreen(a, {threshold : 0});
|
|
},
|
|
"right-of-screen": function(a, i, m) {
|
|
return $.rightofscreen(a, {threshold : 0});
|
|
},
|
|
"in-viewport": function(a, i, m) {
|
|
return $.inviewport(a, {threshold : 0});
|
|
}
|
|
});
|
|
|
|
|
|
})(jQuery);
|