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| 1 /* Copyright (c) 2010 |
| 2 * @author Laurence Wheway |
| 3 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.p
hp) |
| 4 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses. |
| 5 * |
| 6 * @version 1.2.0 |
| 7 */ |
| 8 (function($) { |
| 9 jQuery.extend({ |
| 10 isOnScreen: function(box, container) { |
| 11 //ensure numbers come in as intgers (not strings) and re
move 'px' is it's there |
| 12 for(var i in box){box[i] = parseFloat(box[i])}; |
| 13 for(var i in container){container[i] = parseFloat(contai
ner[i])}; |
| 14 |
| 15 if(!container){ |
| 16 container = { |
| 17 left: $(window).scrollLeft(), |
| 18 top: $(window).scrollTop(), |
| 19 width: $(window).width(), |
| 20 height: $(window).height() |
| 21 } |
| 22 } |
| 23 |
| 24 if( box.left+box.width-container.left > 0 && |
| 25 box.left < container.width+container.left && |
| 26 box.top+box.height-container.top > 0 && |
| 27 box.top < container.height+container.top |
| 28 ) return true; |
| 29 return false; |
| 30 } |
| 31 }) |
| 32 |
| 33 |
| 34 jQuery.fn.isOnScreen = function (container) { |
| 35 for(var i in container){container[i] = parseFloat(container[i])}
; |
| 36 |
| 37 if(!container){ |
| 38 container = { |
| 39 left: $(window).scrollLeft(), |
| 40 top: $(window).scrollTop(), |
| 41 width: $(window).width(), |
| 42 height: $(window).height() |
| 43 } |
| 44 } |
| 45 |
| 46 if( $(this).offset().left+$(this).width()-container.left > 0
&& |
| 47 $(this).offset().left < container.width+container.left &
& |
| 48 $(this).offset().top+$(this).height()-container.top > 0
&& |
| 49 $(this).offset().top < container.height+container.top |
| 50 ) return true; |
| 51 return false; |
| 52 } |
| 53 })(jQuery); |
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