X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Foffset.js;h=9ef5aa02de416107dc5684ab014bd2153e9d418d;hb=f8ef75eb9124ce924be5fb521c783efd5c996e33;hp=479f1060c3d21e2c6d8a0fc3867101c4f81b63a5;hpb=5c21e44fce5335cfe1bb4989006900476f2c75ca;p=jquery.git diff --git a/src/offset.js b/src/offset.js index 479f106..9ef5aa0 100644 --- a/src/offset.js +++ b/src/offset.js @@ -1,37 +1,41 @@ -if ( document.documentElement["getBoundingClientRect"] ) +if ( "getBoundingClientRect" in document.documentElement ) jQuery.fn.offset = function() { - if ( !this[0] ) return { top: 0, left: 0 }; - if ( this[0] === this[0].ownerDocument.body ) return jQuery.offset.bodyOffset( this[0] ); - var box = this[0].getBoundingClientRect(), doc = this[0].ownerDocument, docElem = doc.documentElement, - top = box.top + (self.pageYOffset || jQuery.boxModel && docElem.scrollTop || doc.body.scrollTop ) - docElem.clientTop, - left = box.left + (self.pageXOffset || jQuery.boxModel && docElem.scrollLeft || doc.body.scrollLeft) - docElem.clientLeft; + var elem = this[0]; + if ( !elem ) 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.boxModel && docElem.scrollTop || body.scrollTop ) - clientTop, + left = box.left + (self.pageXOffset || jQuery.boxModel && docElem.scrollLeft || body.scrollLeft) - clientLeft; return { top: top, left: left }; }; -else +else jQuery.fn.offset = function() { - if ( !this[0] ) return { top: 0, left: 0 }; - if ( this[0] === this[0].ownerDocument.body ) return jQuery.offset.bodyOffset( this[0] ); - jQuery.offset.initialized || jQuery.offset.initialize(); + var elem = this[0]; + if ( !elem ) return null; + if ( elem === elem.ownerDocument.body ) return jQuery.offset.bodyOffset( elem ); + jQuery.offset.initialize(); - var elem = this[0], offsetParent = elem.offsetParent, prevOffsetParent = elem, + 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 += parseInt( computedStyle.borderTopWidth, 10) || 0, - left += parseInt( computedStyle.borderLeftWidth, 10) || 0; + top += parseFloat( computedStyle.borderTopWidth, 10) || 0, + left += parseFloat( computedStyle.borderLeftWidth, 10) || 0; prevOffsetParent = offsetParent, offsetParent = elem.offsetParent; } if ( jQuery.offset.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" ) - top += parseInt( computedStyle.borderTopWidth, 10) || 0, - left += parseInt( computedStyle.borderLeftWidth, 10) || 0; + top += parseFloat( computedStyle.borderTopWidth, 10) || 0, + left += parseFloat( computedStyle.borderLeftWidth, 10) || 0; prevComputedStyle = computedStyle; } @@ -39,7 +43,7 @@ else top += body.offsetTop, left += body.offsetLeft; - if ( prevComputedStyle.position === "fixed" ) + if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) top += Math.max(docElem.scrollTop, body.scrollTop), left += Math.max(docElem.scrollLeft, body.scrollLeft); @@ -48,12 +52,10 @@ else jQuery.offset = { initialize: function() { - if ( this.initialized ) return; - var body = document.body, container = document.createElement('div'), innerDiv, checkDiv, table, rules, prop, bodyMarginTop = body.style.marginTop, - html = '