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tubestation/browser/devtools/highlighter/test/head.js

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JavaScript

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is DevTools test code.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
*
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Paul Rouget <paul@mozilla.com> (Original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
const Cu = Components.utils;
let tempScope = {};
Cu.import("resource:///modules/devtools/LayoutHelpers.jsm", tempScope);
let LayoutHelpers = tempScope.LayoutHelpers;
function isHighlighting()
{
let veil = InspectorUI.highlighter.veilTransparentBox;
return !(veil.style.visibility == "hidden");
}
function getHighlitNode()
{
let h = InspectorUI.highlighter;
if (!isHighlighting() || !h._contentRect)
return null;
let a = {
x: h._contentRect.left,
y: h._contentRect.top
};
let b = {
x: a.x + h._contentRect.width,
y: a.y + h._contentRect.height
};
// Get midpoint of diagonal line.
let midpoint = midPoint(a, b);
return LayoutHelpers.getElementFromPoint(h.win.document, midpoint.x,
midpoint.y);
}
function midPoint(aPointA, aPointB)
{
let pointC = { };
pointC.x = (aPointB.x - aPointA.x) / 2 + aPointA.x;
pointC.y = (aPointB.y - aPointA.y) / 2 + aPointA.y;
return pointC;
}