/**
* ===========================================
* LibLayout : a free Java layouting library
* ===========================================
*
* Project Info: http://reporting.pentaho.org/liblayout/
*
* (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* $Id: ColorConverter.java 6653 2008-12-02 14:53:40Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.input.swing.converter;
import java.awt.Color;
import javax.swing.text.Element;
import javax.swing.text.StyleConstants;
import org.jfree.layouting.input.style.keys.border.BorderStyleKeys;
import org.jfree.layouting.input.style.keys.color.ColorStyleKeys;
import org.jfree.layouting.input.style.values.CSSColorValue;
import org.jfree.layouting.input.swing.Converter;
import org.jfree.layouting.input.swing.ConverterAttributeSet;
import org.pentaho.reporting.libraries.base.util.DebugLog;
/**
* This class handles convertions of color style attributes to css style attributes.
*/
public class ColorConverter implements Converter
{
public ColorConverter()
{
}
/**
* Converts a style key and a style value to a CSS compatible style key and style value. A conversion can result in
* more than one key and value.
*
* @param key The style key to convert.
* @param value The style value to convert.
* @param cssAttr The current converted CSS attributes for the current element.
* @param context The current Element.
* @return The conversion result or null if no converstion has been done.
*/
public ConverterAttributeSet convertToCSS(final Object key, final Object value, final ConverterAttributeSet cssAttr,
final Element context)
{
if (key instanceof StyleConstants.ColorConstants)
{
final StyleConstants.ColorConstants colorConstant = (StyleConstants.ColorConstants) key;
return handleColorConstants(colorConstant, value);
}
return null;
}
/**
* Handles the convertions of <code>StyleConstants.ColorConstants</code> key type.
*
* @param colorConstant The style key.
* @param value The style value.
* @return The conversion result or null if no converstion has been done.
*/
private ConverterAttributeSet handleColorConstants(final StyleConstants.ColorConstants colorConstant,
final Object value)
{
final ConverterAttributeSet attr = new ConverterAttributeSet();
if (colorConstant == StyleConstants.Foreground)
{
final CSSColorValue cssColorValue = new CSSColorValue((Color) value);
attr.addAttribute(ColorStyleKeys.COLOR.getName(), cssColorValue);
}
else if (colorConstant == StyleConstants.Background)
{
final CSSColorValue cssColorValue = new CSSColorValue((Color) value);
attr.addAttribute(BorderStyleKeys.BACKGROUND_COLOR.getName(), cssColorValue);
}
else
{
DebugLog.log("Unkown type of color attribute " + colorConstant);
return null;
}
return attr;
}
}