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Fix #10996, simplify offset code by forsaking ancient browsers.

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This commit is contained in:
Mike Sherov
2012-04-05 21:51:27 -04:00
committed by Dave Methvin
parent 91a6d9dafc
commit 77536f5cb2
4 changed files with 14 additions and 111 deletions
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57
src/offset.js
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@@ -1,11 +1,12 @@
(function( jQuery ) {
var getOffset,
rtable = /^t(?:able|d|h)$/i,
rroot = /^(?:body|html)$/i;
if ( "getBoundingClientRect" in document.documentElement ) {
getOffset = function( elem, doc, docElem, box ) {
getOffset = function( elem, doc, docElem ) {
var box;
try {
box = elem.getBoundingClientRect();
} catch(e) {}
@@ -29,56 +30,12 @@ if ( "getBoundingClientRect" in document.documentElement ) {
} else {
getOffset = function( elem, doc, docElem ) {
var computedStyle,
offsetParent = elem.offsetParent,
prevOffsetParent = elem,
body = doc.body,
defaultView = doc.defaultView,
prevComputedStyle = defaultView ? defaultView.getComputedStyle( elem, null ) : elem.currentStyle,
top = elem.offsetTop,
left = elem.offsetLeft;
while ( (elem = elem.parentNode) && elem !== body && elem !== docElem ) {
if ( jQuery.support.fixedPosition && prevComputedStyle.position === "fixed" ) {
break;
}
computedStyle = defaultView ? defaultView.getComputedStyle(elem, null) : elem.currentStyle;
top -= elem.scrollTop;
left -= elem.scrollLeft;
if ( elem === offsetParent ) {
top += elem.offsetTop;
left += elem.offsetLeft;
if ( jQuery.support.doesNotAddBorder && !(jQuery.support.doesAddBorderForTableAndCells && rtable.test(elem.nodeName)) ) {
top += parseFloat( computedStyle.borderTopWidth ) || 0;
left += parseFloat( computedStyle.borderLeftWidth ) || 0;
}
prevOffsetParent = offsetParent;
offsetParent = elem.offsetParent;
}
if ( jQuery.support.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" ) {
top += parseFloat( computedStyle.borderTopWidth ) || 0;
left += parseFloat( computedStyle.borderLeftWidth ) || 0;
}
prevComputedStyle = computedStyle;
if ( !jQuery.contains( docElem, elem ) ) {
return { top: 0, left: 0 };
}
var point = getWindow( doc ).webkitConvertPointFromNodeToPage( elem, new WebKitPoint( 0, 0 ) );
return { top: point.y, left: point.x };
if ( prevComputedStyle.position === "relative" || prevComputedStyle.position === "static" ) {
top += body.offsetTop;
left += body.offsetLeft;
}
if ( jQuery.support.fixedPosition && prevComputedStyle.position === "fixed" ) {
top += Math.max( docElem.scrollTop, body.scrollTop );
left += Math.max( docElem.scrollLeft, body.scrollLeft );
}
return { top: top, left: left };
};
}