# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
# 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 the Firefox Preferences System.
# 
# The Initial Developer of the Original Code is Ben Goodger.
# Portions created by the Initial Developer are Copyright (C) 2005
# the Initial Developer. All Rights Reserved.
# 
# Contributor(s):
#   Gervase Markham <gerv@gerv.net> (Logic)
#   Ben Goodger <ben@mozilla.org>
# 
# 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
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# the provisions above, a recipient may use your version of this file under
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# ***** END LICENSE BLOCK *****

var gFontScalingDialog = {
  init: function ()
  {
    sizeToContent();
  },
  
  onAccept: function ()
  {
    // Get value from the dialog to work out dpi
    var horizSize = parseFloat(document.getElementById("horizSize").value);
    var units = document.getElementById("units").value;
  
    if (!horizSize || horizSize < 0) {
      // We can't calculate anything without a proper value
      window.arguments[0].newdpi = -1;
      return true;
    }
      
    // Convert centimetres to inches.
    // The magic number is allowed because it's a fundamental constant :-)
    if (units == "centimetres")
      horizSize /= 2.54;
  
    // These shouldn't change, but you can't be too careful.
    var horizBarLengthPx = document.getElementById("horizRuler").boxObject.width;
    var horizDPI = parseInt(horizBarLengthPx) / horizSize;
  
    // Average the two <shrug>.
    window.arguments[0].newdpi = Math.round(horizDPI);
    dump("*** intergoat = " + window.arguments[0].toSource() + "\n");
  
    return true;
  }
};