root / trunk / plugins / accordion / lib / jquery.dimensions.js

/* 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: 2007-10-06 20:11:15 +0200 (Sa, 06 Okt 2007) $
 * $Rev: 3581 $
 *
 * 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 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 || {});
        
        return num( this, name.toLowerCase() )
                + num(this, 'border' + torl + 'Width') + num(this, 'border' + borr + 'Width')
                + num(this, 'padding' + torl) + num(this, 'padding' + borr)
                + (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($.css(el.jquery?el[0]:el,prop))||0;
};

})(jQuery);