/* $Id: jquery.dimensions.js 62 2008-01-19 12:37:15Z Bolik@xjgc.com $ */ /* Copyright (c) 2007 Paul Bakaus (paul.bakaus@googlemail.com) and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net) * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses. * * $LastChangedDate: 2007-12-20 22:43:48 +0800 (四, 20 十二月 2007) $ * $Rev: 4257 $ * * Version: @VERSION * * Requires: jQuery 1.2+ */ (function($){ $.dimensions = { version: '@VERSION' }; // Create innerHeight, innerWidth, outerHeight and outerWidth methods $.each( [ 'Height', 'Width' ], function(i, name){ // innerHeight and innerWidth $.fn[ 'inner' + name ] = function() { if (!this[0]) return; var torl = name == 'Height' ? 'Top' : 'Left', // top or left borr = name == 'Height' ? 'Bottom' : 'Right'; // bottom or right return this.is(':visible') ? this[0]['client' + name] : num( this, name.toLowerCase() ) + num(this, 'padding' + torl) + num(this, 'padding' + borr); }; // outerHeight and outerWidth $.fn[ 'outer' + name ] = function(options) { if (!this[0]) return; var torl = name == 'Height' ? 'Top' : 'Left', // top or left borr = name == 'Height' ? 'Bottom' : 'Right'; // bottom or right options = $.extend({ margin: false }, options || {}); var val = this.is(':visible') ? this[0]['offset' + name] : num( this, name.toLowerCase() ) + num(this, 'border' + torl + 'Width') + num(this, 'border' + borr + 'Width') + num(this, 'padding' + torl) + num(this, 'padding' + borr); return val + (options.margin ? (num(this, 'margin' + torl) + num(this, 'margin' + borr)) : 0); }; }); // Create scrollLeft and scrollTop methods $.each( ['Left', 'Top'], function(i, name) { $.fn[ 'scroll' + name ] = function(val) { if (!this[0]) return; return val != undefined ? // Set the scroll offset this.each(function() { this == window || this == document ? window.scrollTo( name == 'Left' ? val : $(window)[ 'scrollLeft' ](), name == 'Top' ? val : $(window)[ 'scrollTop' ]() ) : this[ 'scroll' + name ] = val; }) : // Return the scroll offset this[0] == window || this[0] == document ? self[ (name == 'Left' ? 'pageXOffset' : 'pageYOffset') ] || $.boxModel && document.documentElement[ 'scroll' + name ] || document.body[ 'scroll' + name ] : this[0][ 'scroll' + name ]; }; }); $.fn.extend({ position: function() { var left = 0, top = 0, elem = this[0], offset, parentOffset, offsetParent, results; if (elem) { // Get *real* offsetParent offsetParent = this.offsetParent(); // Get correct offsets offset = this.offset(); parentOffset = offsetParent.offset(); // Subtract element margins offset.top -= num(elem, 'marginTop'); offset.left -= num(elem, 'marginLeft'); // Add offsetParent borders parentOffset.top += num(offsetParent, 'borderTopWidth'); parentOffset.left += num(offsetParent, 'borderLeftWidth'); // Subtract the two offsets results = { top: offset.top - parentOffset.top, left: offset.left - parentOffset.left }; } return results; }, offsetParent: function() { var offsetParent = this[0].offsetParent; while ( offsetParent && (!/^body|html$/i.test(offsetParent.tagName) && $.css(offsetParent, 'position') == 'static') ) offsetParent = offsetParent.offsetParent; return $(offsetParent); } }); function num(el, prop) { return parseInt($.curCSS(el.jquery?el[0]:el,prop,true))||0; }; })(jQuery);
