diff options
Diffstat (limited to 'webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/html/ElementFromPoint.js')
-rw-r--r-- | webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/html/ElementFromPoint.js | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/html/ElementFromPoint.js b/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/html/ElementFromPoint.js new file mode 100644 index 0000000000..572243c912 --- /dev/null +++ b/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/html/ElementFromPoint.js @@ -0,0 +1,124 @@ +/* ************************************************************************ + + qooxdoo - the new era of web development + + http://qooxdoo.org + + Copyright: + 2004-2007 1&1 Internet AG, Germany, http://www.1and1.org + + License: + LGPL: http://www.gnu.org/licenses/lgpl.html + EPL: http://www.eclipse.org/org/documents/epl-v10.php + See the LICENSE file in the project's top-level directory for details. + + Authors: + * Sebastian Werner (wpbasti) + * Andreas Ecker (ecker) + +************************************************************************ */ + +/* ************************************************************************ + + +************************************************************************ */ + +qx.OO.defineClass("qx.html.ElementFromPoint"); + +qx.html.ElementFromPoint.getElementFromPoint = function(x, y) { + return qx.html.ElementFromPoint.getElementFromPointHandler(document.body, x, y); +} + +qx.html.ElementFromPoint.getElementFromPointHandler = function(node, x, y, recursive) +{ + var ch = node.childNodes; + var chl = ch.length-1; + + if (chl < 0) { + return null; + } + + var chc, subres, ret; + + do + { + chc = ch[chl]; + ret = qx.html.ElementFromPoint.getElementFromPointChecker(chc, x, y); + + if (ret) + { + if (typeof recursive === "boolean" && recursive == false) + { + return chc; + } + else + { + subres = qx.html.ElementFromPoint.getElementFromPointHandler(chc, x-ret[0]-qx.html.Style.getBorderLeft(chc), y-ret[2]-qx.html.Style.getBorderTop(chc)); + return subres ? subres : chc; + } + } + } + while(chl--); + + return null; +} + +qx.html.ElementFromPoint.getElementFromPointChecker = function(chc, x, y) +{ + var xstart, ystart, xstop, ystop; + + if (chc.nodeType != 1) { + return false; + } + + xstart = qx.html.Offset.getLeft(chc); + if (x > xstart) + { + ystart = qx.html.Offset.getTop(chc); + if (y > ystart) + { + xstop = xstart + chc.offsetWidth; + + if (x < xstop) + { + ystop = ystart + chc.offsetHeight; + if (y < ystop) + { + return [ xstart, xstop, ystart, ystop ]; + } + } + } + } + + return false; +} + +qx.html.ElementFromPoint.getElementAbsolutePointChecker = function(chc, x, y) +{ + var xstart, ystart, xstop, ystop; + + if (!chc || chc.nodeType != 1) { + return false; + } + + xstart = qx.html.Location.getPageBoxLeft(chc); + if (x > xstart) + { + ystart = qx.html.Location.getPageBoxTop(chc); + if (y > ystart) + { + xstop = xstart + chc.offsetWidth; + + if (x < xstop) + { + ystop = ystart + chc.offsetHeight; + if (y < ystop) + { + return [ xstart, xstop, ystart, ystop ]; + } + } + } + } + + return false; +} |