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;
+ var box = elem.getBoundingClientRect(),
+ doc = elem.ownerDocument,
+ body = doc.body,
+ docElem = doc.documentElement,
+ win = getWindow(doc),
+ clientTop = docElem.clientTop || body.clientTop || 0,
+ clientLeft = docElem.clientLeft || body.clientLeft || 0,
+ scrollTop = (win.pageYOffset || jQuery.support.boxModel && docElem.scrollTop || body.scrollTop ),
+ scrollLeft = (win.pageXOffset || jQuery.support.boxModel && docElem.scrollLeft || body.scrollLeft),
+ top = box.top + scrollTop - clientTop,
+ left = box.left + scrollLeft - clientLeft;
return { top: top, left: left };
};
left += parseFloat( computedStyle.borderLeftWidth ) || 0;
}
- prevOffsetParent = offsetParent, offsetParent = elem.offsetParent;
+ prevOffsetParent = offsetParent;
+ offsetParent = elem.offsetParent;
}
if ( jQuery.offset.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" ) {
this.doesNotAddBorder = (checkDiv.offsetTop !== 5);
this.doesAddBorderForTableAndCells = (td.offsetTop === 5);
- checkDiv.style.position = "fixed", checkDiv.style.top = "20px";
+ checkDiv.style.position = "fixed";
+ checkDiv.style.top = "20px";
+
// safari subtracts parent border width here which is 5px
this.supportsFixedPosition = (checkDiv.offsetTop === 20 || checkDiv.offsetTop === 15);
checkDiv.style.position = checkDiv.style.top = "";
- innerDiv.style.overflow = "hidden", innerDiv.style.position = "relative";
+ innerDiv.style.overflow = "hidden";
+ innerDiv.style.position = "relative";
+
this.subtractsBorderForOverflowNotVisible = (checkDiv.offsetTop === -5);
this.doesNotIncludeMarginInBodyOffset = (body.offsetTop !== bodyMarginTop);
},
setOffset: function( elem, options, i ) {
+ var position = jQuery.curCSS( elem, "position" );
+
// set position first, in-case top/left are set even on static elem
- if ( /static/.test( jQuery.curCSS( elem, "position" ) ) ) {
+ if ( position === "static" ) {
elem.style.position = "relative";
}
- var curElem = jQuery( elem ),
- curOffset = curElem.offset(),
- curTop = parseInt( jQuery.curCSS( elem, "top", true ), 10 ) || 0,
- curLeft = parseInt( jQuery.curCSS( elem, "left", true ), 10 ) || 0;
+
+ var curElem = jQuery( elem ),
+ curOffset = curElem.offset(),
+ curCSSTop = jQuery.curCSS( elem, "top", true ),
+ curCSSLeft = jQuery.curCSS( elem, "left", true ),
+ calculatePosition = (position === "absolute" && jQuery.inArray('auto', [curCSSTop, curCSSLeft]) > -1),
+ props = {}, curPosition = {}, curTop, curLeft;
+
+ // need to be able to calculate position if either top or left is auto and position is absolute
+ if ( calculatePosition ) {
+ curPosition = curElem.position();
+ }
+
+ curTop = calculatePosition ? curPosition.top : parseInt( curCSSTop, 10 ) || 0;
+ curLeft = calculatePosition ? curPosition.left : parseInt( curCSSLeft, 10 ) || 0;
if ( jQuery.isFunction( options ) ) {
options = options.call( elem, i, curOffset );
}
- var props = {
- top: (options.top - curOffset.top) + curTop,
- left: (options.left - curOffset.left) + curLeft
- };
+ if (options.top != null) {
+ props.top = (options.top - curOffset.top) + curTop;
+ }
+ if (options.left != null) {
+ props.left = (options.left - curOffset.left) + curLeft;
+ }
if ( "using" in options ) {
options.using.call( elem, props );