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Added the new .offset() method, directly imported from Dimensions (he…

…avily worked over by both Brandon and John).

Original source:
http://brandonaaron.net/jquery/issues/dimensions/new_offset/jquery.offset.js
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1 parent d2f82ab commit 28ee5c692245e18bdedcc91372949ec8b784ee36 @jeresig jeresig committed Sep 8, 2007
Showing with 92 additions and 2 deletions.
  1. +2 −1 Makefile
  2. +2 −1 build.xml
  3. +88 −0 src/offset.js
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@@ -12,7 +12,8 @@ BASE_FILES = ${SRC_DIR}/core.js\
${SRC_DIR}/selector.js\
${SRC_DIR}/event.js\
${SRC_DIR}/ajax.js\
- ${SRC_DIR}/fx.js
+ ${SRC_DIR}/fx.js\
+ ${SRC_DIR}/offset.js
PLUGINS = ${PLUG_DIR}/button/*\
${PLUG_DIR}/center/*\
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@@ -48,8 +48,9 @@
<fileset dir="${SRC_DIR}" includes="core.js" />
<fileset dir="${SRC_DIR}" includes="selector.js" />
<fileset dir="${SRC_DIR}" includes="event.js" />
- <fileset dir="${SRC_DIR}" includes="fx.js" />
<fileset dir="${SRC_DIR}" includes="ajax.js" />
+ <fileset dir="${SRC_DIR}" includes="fx.js" />
+ <fileset dir="${SRC_DIR}" includes="offset.js" />
<fileset dir="${PLUGIN_DIR}" includes="${PLUGINS}" />
<fileset dir="${SRC_DIR}" includes="outro.js" />
</concat>
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@@ -0,0 +1,88 @@
+jQuery.fn.offset = function() {
+ var left = 0, top = 0, elem = this[0], results;
+
+ if ( elem ) with ( jQuery.browser ) {
+ var absolute = jQuery.css(elem, "position") == "absolute",
+ parent = elem.parentNode,
+ offsetParent = elem.offsetParent,
+ doc = elem.ownerDocument,
+ safari2 = safari && !absolute && parseInt(version) < 522;
+
+ // Use getBoundingClientRect if available
+ if ( elem.getBoundingClientRect ) {
+ box = elem.getBoundingClientRect();
+
+ // Add the document scroll offsets
+ add(
+ box.left + Math.max(doc.documentElement.scrollLeft, doc.body.scrollLeft),
+ box.top + Math.max(doc.documentElement.scrollTop, doc.body.scrollTop)
+ );
+
+ // IE adds the HTML element's border, by default it is medium which is 2px
+ // IE 6 and IE 7 quirks mode the border width is overwritable by the following css html { border: 0; }
+ // IE 7 standards mode, the border is always 2px
+ if ( msie ) {
+ var border = jQuery("html").css("borderWidth");
+ border = (border == "medium" || jQuery.boxModel && parseInt(version) >= 7) && 2 || border;
+ add( -border, -border );
+ }
+
+ // Otherwise loop through the offsetParents and parentNodes
+ } else {
+
+ // Initial element offsets
+ add( elem.offsetLeft, elem.offsetTop );
+
+ // Get parent offsets
+ while ( offsetParent ) {
+ // Add offsetParent offsets
+ add( offsetParent.offsetLeft, offsetParent.offsetTop );
+
+ // Mozilla and Safari > 2 does not include the border on offset parents
+ // However Mozilla adds the border for table cells
+ if ( mozilla && /^t[d|h]$/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;
+ }
+
+ // Safari doubles body offsets with an absolutely positioned element or parent
+ if ( safari && absolute )
+ add( -doc.body.offsetLeft, -doc.body.offsetTop );
+ }
+
+ // Return an object with top and left properties
+ results = { top: top, left: left };
+ }
+
+ return results;
+
+ function border(elem) {
+ add( jQuery.css(elem, "borderLeftWidth"), jQuery.css(elem, "borderTopWidth") );
+ }
+
+ function add(l, t) {
+ left += parseInt(l) || 0;
+ top += parseInt(t) || 0;
+ }
+};

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