320 lines
12 KiB
JavaScript
320 lines
12 KiB
JavaScript
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/*
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* Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
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* and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
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*
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* $LastChangedDate: 2007-03-27 23:29:43 +0200 (Di, 27 Mrz 2007) $
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* $Rev: 1601 $
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*/
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jQuery.fn._height = jQuery.fn.height;
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jQuery.fn._width = jQuery.fn.width;
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/**
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* If used on document, returns the document's height (innerHeight)
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* If used on window, returns the viewport's (window) height
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* See core docs on height() to see what happens when used on an element.
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*
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* @example $("#testdiv").height()
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* @result 200
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*
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* @example $(document).height()
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* @result 800
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*
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* @example $(window).height()
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* @result 400
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*
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* @name height
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* @type Object
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* @cat Plugins/Dimensions
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*/
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jQuery.fn.height = function() {
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if ( this[0] == window )
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return self.innerHeight ||
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jQuery.boxModel && document.documentElement.clientHeight ||
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document.body.clientHeight;
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if ( this[0] == document )
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return Math.max( document.body.scrollHeight, document.body.offsetHeight );
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return this._height(arguments[0]);
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};
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/**
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* If used on document, returns the document's width (innerWidth)
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* If used on window, returns the viewport's (window) width
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* See core docs on height() to see what happens when used on an element.
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*
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* @example $("#testdiv").width()
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* @result 200
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*
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* @example $(document).width()
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* @result 800
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*
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* @example $(window).width()
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* @result 400
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*
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* @name width
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* @type Object
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* @cat Plugins/Dimensions
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*/
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jQuery.fn.width = function() {
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if ( this[0] == window )
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return self.innerWidth ||
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jQuery.boxModel && document.documentElement.clientWidth ||
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document.body.clientWidth;
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if ( this[0] == document )
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return Math.max( document.body.scrollWidth, document.body.offsetWidth );
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return this._width(arguments[0]);
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};
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/**
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* Returns the inner height value (without border) for the first matched element.
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* If used on document, returns the document's height (innerHeight)
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* If used on window, returns the viewport's (window) height
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*
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* @example $("#testdiv").innerHeight()
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* @result 800
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*
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* @name innerHeight
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* @type Number
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* @cat Plugins/Dimensions
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*/
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jQuery.fn.innerHeight = function() {
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return this[0] == window || this[0] == document ?
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this.height() :
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this.css('display') != 'none' ?
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this[0].offsetHeight - (parseInt(this.css("borderTopWidth")) || 0) - (parseInt(this.css("borderBottomWidth")) || 0) :
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this.height() + (parseInt(this.css("paddingTop")) || 0) + (parseInt(this.css("paddingBottom")) || 0);
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};
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/**
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* Returns the inner width value (without border) for the first matched element.
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* If used on document, returns the document's Width (innerWidth)
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* If used on window, returns the viewport's (window) width
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*
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* @example $("#testdiv").innerWidth()
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* @result 1000
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*
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* @name innerWidth
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* @type Number
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* @cat Plugins/Dimensions
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*/
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jQuery.fn.innerWidth = function() {
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return this[0] == window || this[0] == document ?
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this.width() :
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this.css('display') != 'none' ?
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this[0].offsetWidth - (parseInt(this.css("borderLeftWidth")) || 0) - (parseInt(this.css("borderRightWidth")) || 0) :
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this.height() + (parseInt(this.css("paddingLeft")) || 0) + (parseInt(this.css("paddingRight")) || 0);
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};
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/**
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* Returns the outer height value (including border) for the first matched element.
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* Cannot be used on document or window.
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*
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* @example $("#testdiv").outerHeight()
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* @result 1000
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*
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* @name outerHeight
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* @type Number
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* @cat Plugins/Dimensions
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*/
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jQuery.fn.outerHeight = function() {
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return this[0] == window || this[0] == document ?
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this.height() :
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this.css('display') != 'none' ?
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this[0].offsetHeight :
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this.height() + (parseInt(this.css("borderTopWidth")) || 0) + (parseInt(this.css("borderBottomWidth")) || 0)
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+ (parseInt(this.css("paddingTop")) || 0) + (parseInt(this.css("paddingBottom")) || 0);
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};
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/**
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* Returns the outer width value (including border) for the first matched element.
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* Cannot be used on document or window.
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*
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* @example $("#testdiv").outerWidth()
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* @result 1000
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*
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* @name outerWidth
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* @type Number
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* @cat Plugins/Dimensions
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*/
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jQuery.fn.outerWidth = function() {
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return this[0] == window || this[0] == document ?
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this.width() :
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this.css('display') != 'none' ?
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this[0].offsetWidth :
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this.height() + (parseInt(this.css("borderLeftWidth")) || 0) + (parseInt(this.css("borderRightWidth")) || 0)
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+ (parseInt(this.css("paddingLeft")) || 0) + (parseInt(this.css("paddingRight")) || 0);
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};
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/**
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* Returns how many pixels the user has scrolled to the right (scrollLeft).
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* Works on containers with overflow: auto and window/document.
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*
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* @example $("#testdiv").scrollLeft()
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* @result 100
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*
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* @name scrollLeft
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* @type Number
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* @cat Plugins/Dimensions
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*/
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jQuery.fn.scrollLeft = function() {
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if ( this[0] == window || this[0] == document )
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return self.pageXOffset ||
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jQuery.boxModel && document.documentElement.scrollLeft ||
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document.body.scrollLeft;
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return this[0].scrollLeft;
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};
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/**
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* Returns how many pixels the user has scrolled to the bottom (scrollTop).
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* Works on containers with overflow: auto and window/document.
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*
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* @example $("#testdiv").scrollTop()
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* @result 100
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*
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* @name scrollTop
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* @type Number
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* @cat Plugins/Dimensions
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*/
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jQuery.fn.scrollTop = function() {
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if ( this[0] == window || this[0] == document )
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return self.pageYOffset ||
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jQuery.boxModel && document.documentElement.scrollTop ||
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document.body.scrollTop;
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return this[0].scrollTop;
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};
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/**
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* Returns the location of the element in pixels from the top left corner of the viewport.
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*
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* For accurate readings make sure to use pixel values for margins, borders and padding.
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*
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* @example $("#testdiv").offset()
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* @result { top: 100, left: 100, scrollTop: 10, scrollLeft: 10 }
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*
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* @example $("#testdiv").offset({ scroll: false })
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* @result { top: 90, left: 90 }
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*
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* @example var offset = {}
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* $("#testdiv").offset({ scroll: false }, offset)
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* @result offset = { top: 90, left: 90 }
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*
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* @name offset
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* @param Object options A hash of options describing what should be included in the final calculations of the offset.
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* The options include:
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* margin: Should the margin of the element be included in the calculations? True by default.
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* If set to false the margin of the element is subtracted from the total offset.
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* border: Should the border of the element be included in the calculations? True by default.
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* If set to false the border of the element is subtracted from the total offset.
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* padding: Should the padding of the element be included in the calculations? False by default.
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* If set to true the padding of the element is added to the total offset.
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* scroll: Should the scroll offsets of the parent elements be included in the calculations?
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* True by default. When true, it adds the total scroll offsets of all parents to the
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* total offset and also adds two properties to the returned object, scrollTop and
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* scrollLeft. If set to false the scroll offsets of parent elements are ignored.
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* If scroll offsets are not needed, set to false to get a performance boost.
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* @param Object returnObject An object to store the return value in, so as not to break the chain. If passed in the
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* chain will not be broken and the result will be assigned to this object.
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* @type Object
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* @cat Plugins/Dimensions
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* @author Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
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*/
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jQuery.fn.offset = function(options, returnObject) {
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var x = 0, y = 0, elem = this[0], parent = this[0], absparent=false, relparent=false, op, sl = 0, st = 0, options = jQuery.extend({ margin: true, border: true, padding: false, scroll: true }, options || {});
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do {
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x += parent.offsetLeft || 0;
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y += parent.offsetTop || 0;
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// Mozilla and IE do not add the border
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if (jQuery.browser.mozilla || jQuery.browser.msie) {
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// get borders
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var bt = parseInt(jQuery.css(parent, 'borderTopWidth')) || 0;
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var bl = parseInt(jQuery.css(parent, 'borderLeftWidth')) || 0;
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// add borders to offset
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x += bl;
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y += bt;
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// Mozilla removes the border if the parent has overflow property other than visible
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if (jQuery.browser.mozilla && parent != elem && jQuery.css(parent, 'overflow') != 'visible') {
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x += bl;
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y += bt;
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}
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// Mozilla does not include the border on body if an element isn't positioned absolute and is without an absolute parent
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if (jQuery.css(parent, 'position') == 'absolute') absparent = true;
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// IE does not include the border on the body if an element is position static and without an absolute or relative parent
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if (jQuery.css(parent, 'position') == 'relative') relparent = true;
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}
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if (options.scroll) {
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// Need to get scroll offsets in-between offsetParents
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op = parent.offsetParent;
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do {
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sl += parent.scrollLeft || 0;
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st += parent.scrollTop || 0;
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parent = parent.parentNode;
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// Mozilla removes the border if the parent has overflow property other than visible
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if (jQuery.browser.mozilla && parent != elem && parent != op && jQuery.css(parent, 'overflow') != 'visible') {
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x += parseInt(jQuery.css(parent, 'borderLeftWidth')) || 0;
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y += parseInt(jQuery.css(parent, 'borderTopWidth')) || 0;
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}
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} while (op && parent != op);
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} else
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parent = parent.offsetParent;
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if (parent && (parent.tagName.toLowerCase() == 'body' || parent.tagName.toLowerCase() == 'html')) {
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// Safari and IE Standards Mode doesn't add the body margin for elments positioned with static or relative
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if ((jQuery.browser.safari || (jQuery.browser.msie && jQuery.boxModel)) && jQuery.css(elem, 'position') != 'absolute') {
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x += parseInt(jQuery.css(parent, 'marginLeft')) || 0;
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y += parseInt(jQuery.css(parent, 'marginTop')) || 0;
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}
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// Mozilla does not include the border on body if an element isn't positioned absolute and is without an absolute parent
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// IE does not include the border on the body if an element is positioned static and without an absolute or relative parent
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if ( (jQuery.browser.mozilla && !absparent) ||
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(jQuery.browser.msie && jQuery.css(elem, 'position') == 'static' && (!relparent || !absparent)) ) {
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x += parseInt(jQuery.css(parent, 'borderLeftWidth')) || 0;
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y += parseInt(jQuery.css(parent, 'borderTopWidth')) || 0;
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}
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break; // Exit the loop
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}
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} while (parent);
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if ( !options.margin) {
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x -= parseInt(jQuery.css(elem, 'marginLeft')) || 0;
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y -= parseInt(jQuery.css(elem, 'marginTop')) || 0;
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}
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// Safari and Opera do not add the border for the element
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if ( options.border && (jQuery.browser.safari || jQuery.browser.opera) ) {
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x += parseInt(jQuery.css(elem, 'borderLeftWidth')) || 0;
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y += parseInt(jQuery.css(elem, 'borderTopWidth')) || 0;
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} else if ( !options.border && !(jQuery.browser.safari || jQuery.browser.opera) ) {
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x -= parseInt(jQuery.css(elem, 'borderLeftWidth')) || 0;
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y -= parseInt(jQuery.css(elem, 'borderTopWidth')) || 0;
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}
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if ( options.padding ) {
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x += parseInt(jQuery.css(elem, 'paddingLeft')) || 0;
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y += parseInt(jQuery.css(elem, 'paddingTop')) || 0;
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}
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// Opera thinks offset is scroll offset for display: inline elements
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if (options.scroll && jQuery.browser.opera && jQuery.css(elem, 'display') == 'inline') {
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sl -= elem.scrollLeft || 0;
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st -= elem.scrollTop || 0;
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}
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var returnValue = options.scroll ? { top: y - st, left: x - sl, scrollTop: st, scrollLeft: sl }
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: { top: y, left: x };
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if (returnObject) { jQuery.extend(returnObject, returnValue); return this; }
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else { return returnValue; }
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};
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