X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Foffset.js;h=0a8b9e64faa100b9441619f3353e2cf04aa47a7e;hb=72bb9dfe281a12c1195c4e32ae1440a9d0708ba3;hp=674338ecbf0397a75ccc44c56f4990bc33387055;hpb=15a78f8fea8679205bc734ec053ff24ebbfd31c8;p=jquery.git diff --git a/src/offset.js b/src/offset.js index 674338e..0a8b9e6 100644 --- a/src/offset.js +++ b/src/offset.js @@ -1,91 +1,166 @@ -// The Offset Method -// Originally By Brandon Aaron, part of the Dimension Plugin -// http://jquery.com/plugins/project/dimensions -jQuery.fn.offset = function() { - var left = 0, top = 0, elem = this[0], results; - - if ( elem ) with ( jQuery.browser ) { - var absolute = jQuery.css(elem, "position") == "absolute", - parent = elem.parentNode, - offsetParent = elem.offsetParent, - doc = elem.ownerDocument, - safari2 = safari && !absolute && parseInt(version) < 522; - - // Use getBoundingClientRect if available - if ( elem.getBoundingClientRect ) { - box = elem.getBoundingClientRect(); - - // Add the document scroll offsets - add( - box.left + Math.max(doc.documentElement.scrollLeft, doc.body.scrollLeft), - box.top + Math.max(doc.documentElement.scrollTop, doc.body.scrollTop) - ); - - // IE adds the HTML element's border, by default it is medium which is 2px - // IE 6 and IE 7 quirks mode the border width is overwritable by the following css html { border: 0; } - // IE 7 standards mode, the border is always 2px - if ( msie ) { - var border = jQuery("html").css("borderWidth"); - border = (border == "medium" || jQuery.boxModel && parseInt(version) >= 7) && 2 || border; - add( -border, -border ); - } - - // Otherwise loop through the offsetParents and parentNodes - } else { - - // Initial element offsets - add( elem.offsetLeft, elem.offsetTop ); - - // Get parent offsets - while ( offsetParent ) { - // Add offsetParent offsets - add( offsetParent.offsetLeft, offsetParent.offsetTop ); - - // Mozilla and Safari > 2 does not include the border on offset parents - // However Mozilla adds the border for table cells - if ( mozilla && /^t[d|h]$/i.test(parent.tagName) || !safari2 ) - border( offsetParent ); - - // Safari <= 2 doubles body offsets with an absolutely positioned element or parent - if ( safari2 && !absolute && jQuery.css(offsetParent, "position") == "absolute" ) - absolute = true; - - // Get next offsetParent - offsetParent = offsetParent.offsetParent; - } - - // Get parent scroll offsets - while ( parent.tagName && /^body|html$/i.test(parent.tagName) ) { - // Work around opera inline/table scrollLeft/Top bug - if ( /^inline|table-row.*$/i.test(jQuery.css(parent, "display")) ) - // Subtract parent scroll offsets - add( -parent.scrollLeft, -parent.scrollTop ); - - // Mozilla does not add the border for a parent that has overflow != visible - if ( mozilla && jQuery.css(parent, "overflow") != "visible" ) - border( parent ); - - // Get next parent - parent = parent.parentNode; +if ( "getBoundingClientRect" in document.documentElement ) + jQuery.fn.offset = function() { + var elem = this[0]; + if ( !elem || !elem.ownerDocument ) return null; + if ( elem === elem.ownerDocument.body ) return jQuery.offset.bodyOffset( elem ); + var box = elem.getBoundingClientRect(), doc = elem.ownerDocument, body = doc.body, docElem = doc.documentElement, + clientTop = docElem.clientTop || body.clientTop || 0, clientLeft = docElem.clientLeft || body.clientLeft || 0, + top = box.top + (self.pageYOffset || jQuery.support.boxModel && docElem.scrollTop || body.scrollTop ) - clientTop, + left = box.left + (self.pageXOffset || jQuery.support.boxModel && docElem.scrollLeft || body.scrollLeft) - clientLeft; + return { top: top, left: left }; + }; +else + jQuery.fn.offset = function() { + var elem = this[0]; + if ( !elem || !elem.ownerDocument ) return null; + if ( elem === elem.ownerDocument.body ) return jQuery.offset.bodyOffset( elem ); + jQuery.offset.initialize(); + + var offsetParent = elem.offsetParent, prevOffsetParent = elem, + doc = elem.ownerDocument, computedStyle, docElem = doc.documentElement, + body = doc.body, defaultView = doc.defaultView, + prevComputedStyle = defaultView.getComputedStyle(elem, null), + top = elem.offsetTop, left = elem.offsetLeft; + + while ( (elem = elem.parentNode) && elem !== body && elem !== docElem ) { + if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) break; + computedStyle = defaultView.getComputedStyle(elem, null); + top -= elem.scrollTop, left -= elem.scrollLeft; + if ( elem === offsetParent ) { + top += elem.offsetTop, left += elem.offsetLeft; + if ( jQuery.offset.doesNotAddBorder && !(jQuery.offset.doesAddBorderForTableAndCells && /^t(able|d|h)$/i.test(elem.tagName)) ) + top += parseFloat( computedStyle.borderTopWidth ) || 0, + left += parseFloat( computedStyle.borderLeftWidth ) || 0; + prevOffsetParent = offsetParent, offsetParent = elem.offsetParent; } - - // Safari doubles body offsets with an absolutely positioned element or parent - if ( safari && absolute ) - add( -doc.body.offsetLeft, -doc.body.offsetTop ); + if ( jQuery.offset.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" ) + top += parseFloat( computedStyle.borderTopWidth ) || 0, + left += parseFloat( computedStyle.borderLeftWidth ) || 0; + prevComputedStyle = computedStyle; } - // Return an object with top and left properties - results = { top: top, left: left }; - } + if ( prevComputedStyle.position === "relative" || prevComputedStyle.position === "static" ) + top += body.offsetTop, + left += body.offsetLeft; - return results; + if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) + top += Math.max( docElem.scrollTop, body.scrollTop ), + left += Math.max( docElem.scrollLeft, body.scrollLeft ); - function border(elem) { - add( jQuery.css(elem, "borderLeftWidth"), jQuery.css(elem, "borderTopWidth") ); - } + return { top: top, left: left }; + }; + +jQuery.offset = { + initialize: function() { + var body = document.body, container = document.createElement('div'), innerDiv, checkDiv, table, td, bodyMarginTop = parseFloat( jQuery.curCSS(body, 'marginTop', true) ) || 0, + html = '