/*
*
* Copyright (C) 2007-2015 Licensed to the Comunes Association (CA) under
* one or more contributor license agreements (see COPYRIGHT for details).
* The CA licenses this file to you under the GNU Affero General Public
* License version 3, (the "License"); you may not use this file except in
* compliance with the License. This file is part of kune.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package net.auroris.ColorPicker.client;
/**
* Copyright (c) 2007, AurorisNET.
*
* Everyone is permitted to copy and distribute verbatim copies of this license
* document, but changing it is not allowed.
*
* Preamble
*
* This license establishes the terms under which a given free software Package
* may be copied, modified, distributed, and/or redistributed. The intent is
* that the Copyright Holder maintains some artistic control over the
* development of that Package while still keeping the Package available as open
* source and free software.
*
* You are always permitted to make arrangements wholly outside of this license
* directly with the Copyright Holder of a given Package. If the terms of this
* license do not permit the full use that you propose to make of the Package,
* you should contact the Copyright Holder and seek a different licensing
* arrangement.
*
* Definitions
*
* "Copyright Holder" means the individual(s) or organization(s) named in the
* copyright notice for the entire Package.
*
* "Contributor" means any party that has contributed code or other material to
* the Package, in accordance with the Copyright Holder's procedures.
*
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* Versions is governed by this Artistic License. By using, modifying or
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* distribute the Package, if you do not accept this license.
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* Modified Version complies with the requirements of this license.
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* mark, tradename, or logo of the Copyright Holder.
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* patent license to make, have made, use, offer to sell, sell, import and
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* by the Copyright Holder that are necessarily infringed by the Package. If you
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* any party alleging that the Package constitutes direct or contributory patent
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* (14) Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER
* AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
* NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY YOUR LOCAL LAW.
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import java.util.HashMap;
import java.util.Map;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
// TODO: Auto-generated Javadoc
/**
* A helpful class to set transparencies in browsers GWT supports.
*
* @author AurorisNET
*/
public class TransparencyImpl
{
// Caches the original DXImageTransform.Microsoft.AlphaImageLoader settings for IE6
/** The map. */
private static Map<Element, String> map = new HashMap<Element, String>();
// Get IE version (provided by Microsoft)
/**
* Gets the iE version.
*
* @return the iE version
*/
public static native float getIEVersion()
/*-{
var rv = -1; // Return value assumes failure.
if (navigator.appName == 'Microsoft Internet Explorer')
{
var ua = navigator.userAgent;
var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
if (re.exec(ua) != null)
rv = parseFloat( RegExp.$1 );
}
return rv;
}-*/;
/**
* Sets the background color.
*
* @param elem the elem
* @param color the color
*/
public static void setBackgroundColor(Element elem, String color)
{
try
{
DOM.setStyleAttribute(elem, "backgroundColor", color);
}
catch (com.google.gwt.core.client.JavaScriptException e)
{
// Called if backgroundColor could not be set.
}
}
/* Given a DOM element, set the transparency value, with 100 being fully opaque and
* 0 being fully transparent
* @param elem A com.google.gwt.user.client.Element object
* @param alpha An alpha value
*/
/**
* Sets the transparency.
*
* @param elem the elem
* @param alpha the alpha
*/
public static void setTransparency(Element elem, int alpha)
{
float ieVersion = getIEVersion();
if (ieVersion >= 5.5 && ieVersion < 7.0)
{
elem = DOM.getChild(elem, 0);
// Cache existing filters on the image, then re-apply everything with our Alpha filter
// stacked on the end.
if (map.containsKey(elem))
{
if (alpha == 100)
{
DOM.setStyleAttribute(elem, "filter", map.get(elem) + "");
}
else
{
DOM.setStyleAttribute(elem, "filter", map.get(elem) +
", progid:DXImageTransform.Microsoft.Alpha(opacity=" + alpha + ");");
}
}
else
{
map.put(elem, DOM.getStyleAttribute(elem, "filter"));
if (alpha == 100)
{
DOM.setStyleAttribute(elem, "filter", map.get(elem) + "");
}
else
{
DOM.setStyleAttribute(elem, "filter", map.get(elem) +
", progid:DXImageTransform.Microsoft.Alpha(opacity=" + alpha + ");");
}
}
}
// If IE 7 (or better)
else if (ieVersion >= 7.0)
{
DOM.setStyleAttribute(elem, "filter", "alpha(opacity="+alpha+")");
}
else // Everyone else
{
setMozOpacity(elem,(new Integer(alpha).floatValue() / 100)+"");
//DOM.setStyleAttribute(elem, "-moz-opacity", ""+(new Integer(alpha).floatValue() / 100)+"");
DOM.setStyleAttribute(elem, "opacity", ""+(new Integer(alpha).floatValue() / 100)+"");
}
}
//workaround for to strict debugger....
/**
* Sets the moz opacity.
*
* @param elem the elem
* @param opacity the opacity
*/
private static native void setMozOpacity(Element elem, String opacity) /*-{
elem.style["-moz-opacity"] = opacity;
}-*/;
}