-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 ( document.documentElement["getBoundingClientRect"] )
+ 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, 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
+ 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], 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 ) {
+ 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;
+ 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 += parseInt( computedStyle.borderTopWidth, 10) || 0,
+ left += parseInt( computedStyle.borderLeftWidth, 10) || 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 ( 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 };
+ };
- function add(l, t) {
- left += parseInt(l) || 0;
- top += parseInt(t) || 0;
+jQuery.offset = {
+ initialize: function() {
+ if ( this.initialized ) return;
+ var body = document.body, container = document.createElement('div'), innerDiv, checkDiv, table, td, rules, prop, bodyMarginTop = body.style.marginTop,
+ html = '<div style="position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;"><div></div></div><table style="position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;"cellpadding="0"cellspacing="0"><tr><td></td></tr></table>';
+
+ rules = { position: 'absolute', top: 0, left: 0, margin: 0, border: 0, width: '1px', height: '1px', visibility: 'hidden' };
+ for ( prop in rules ) container.style[prop] = rules[prop];
+
+ container.innerHTML = html;
+ body.insertBefore(container, body.firstChild);
+ innerDiv = container.firstChild, checkDiv = innerDiv.firstChild, td = innerDiv.nextSibling.firstChild.firstChild;
+
+ this.doesNotAddBorder = (checkDiv.offsetTop !== 5);
+ this.doesAddBorderForTableAndCells = (td.offsetTop === 5);
+
+ innerDiv.style.overflow = 'hidden', innerDiv.style.position = 'relative';
+ this.subtractsBorderForOverflowNotVisible = (checkDiv.offsetTop === -5);
+
+ body.style.marginTop = '1px';
+ this.doesNotIncludeMarginInBodyOffset = (body.offsetTop === 0);
+ body.style.marginTop = bodyMarginTop;
+
+ body.removeChild(container);
+ this.initialized = true;
+ },
+
+ bodyOffset: function(body) {
+ jQuery.offset.initialized || jQuery.offset.initialize();
+ var top = body.offsetTop, left = body.offsetLeft;
+ if ( jQuery.offset.doesNotIncludeMarginInBodyOffset )
+ top += parseInt( jQuery.curCSS(body, 'marginTop', true), 10 ) || 0,
+ left += parseInt( jQuery.curCSS(body, 'marginLeft', true), 10 ) || 0;
+ return { top: top, left: left };
}
};
+
+
+jQuery.fn.extend({
+ position: function() {
+ var left = 0, top = 0, results;
+
+ if ( this[0] ) {
+ // Get *real* offsetParent
+ var offsetParent = this.offsetParent(),
+
+ // Get correct offsets
+ offset = this.offset(),
+ parentOffset = /^body|html$/i.test(offsetParent[0].tagName) ? { top: 0, left: 0 } : offsetParent.offset();
+
+ // Subtract element margins
+ // note: when an element has margin: auto the offsetLeft and marginLeft
+ // are the same in Safari causing offset.left to incorrectly be 0
+ offset.top -= num( this, 'marginTop' );
+ offset.left -= num( this, 'marginLeft' );
+
+ // Add offsetParent borders
+ parentOffset.top += num( offsetParent, 'borderTopWidth' );
+ parentOffset.left += num( offsetParent, 'borderLeftWidth' );
+
+ // Subtract the two offsets
+ results = {
+ top: offset.top - parentOffset.top,
+ left: offset.left - parentOffset.left
+ };
+ }
+
+ return results;
+ },
+
+ offsetParent: function() {
+ var offsetParent = this[0].offsetParent || document.body;
+ while ( offsetParent && (!/^body|html$/i.test(offsetParent.tagName) && jQuery.css(offsetParent, 'position') == 'static') )
+ offsetParent = offsetParent.offsetParent;
+ return jQuery(offsetParent);
+ }
+});
+
+
+// Create scrollLeft and scrollTop methods
+jQuery.each( ['Left', 'Top'], function(i, name) {
+ var method = 'scroll' + name;
+
+ jQuery.fn[ method ] = function(val) {
+ if (!this[0]) return null;
+
+ return val !== undefined ?
+
+ // Set the scroll offset
+ this.each(function() {
+ this == window || this == document ?
+ window.scrollTo(
+ !i ? val : jQuery(window).scrollLeft(),
+ i ? val : jQuery(window).scrollTop()
+ ) :
+ this[ method ] = val;
+ }) :
+
+ // Return the scroll offset
+ this[0] == window || this[0] == document ?
+ self[ i ? 'pageYOffset' : 'pageXOffset' ] ||
+ jQuery.boxModel && document.documentElement[ method ] ||
+ document.body[ method ] :
+ this[0][ method ];
+ };
+});
git.asbjorn.biz / jquery.git / blobdiff