/**
* ===========================================
* 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: FontConverter.java 3524 2007-10-16 11:26:31Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.input.swing.converter;
import javax.swing.text.AttributeSet;
import javax.swing.text.Element;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import org.jfree.layouting.input.style.keys.font.FontStyle;
import org.jfree.layouting.input.style.keys.font.FontStyleKeys;
import org.jfree.layouting.input.style.keys.font.FontWeight;
import org.jfree.layouting.input.swing.Converter;
import org.jfree.layouting.input.swing.ConverterAttributeSet;
import org.jfree.util.Log;
/**
* This class handles convertions of font style attributes to css style attributes.
*/
public class FontConverter implements Converter {
public FontConverter()
{
}
/**
* 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.FontConstants)
{
final StyleConstants.FontConstants fontConstant = (StyleConstants.FontConstants)key;
return handleFontConstants(fontConstant, value);
}
return null;
}
/**
* Handles the convertions of <code>(StyleConstants.FontConstants</code> key type.
*
* @param fontConstant The style key.
* @param value The style value.
* @return The conversion result or null if no converstion has been done.
*/
protected ConverterAttributeSet handleFontConstants (final StyleConstants.FontConstants fontConstant,
final Object value)
{
final ConverterAttributeSet attr = new ConverterAttributeSet();
if(fontConstant == StyleConstants.FontFamily)
{
// just attribute name conversion
attr.addAttribute(FontStyleKeys.FONT_FAMILY.getName(), value);
}
else if(fontConstant == StyleConstants.FontSize)
{
// just attribute name conversion
attr.addAttribute(FontStyleKeys.FONT_SIZE.getName(), value);
}
else if (fontConstant == StyleConstants.Bold)
{
final Boolean b = (Boolean)value;
if(Boolean.TRUE.equals(b))
{
attr.addAttribute(FontStyleKeys.FONT_WEIGHT.getName(), FontWeight.BOLD);
}
else
{
attr.addAttribute(FontStyleKeys.FONT_WEIGHT.getName(), FontWeight.NORMAL);
}
}
else if (fontConstant == StyleConstants.Italic)
{
final Boolean b = (Boolean)value;
if(Boolean.TRUE.equals(b))
{
attr.addAttribute(FontStyleKeys.FONT_STYLE.getName(), FontStyle.ITALIC);
}
else
{
attr.addAttribute(FontStyleKeys.FONT_STYLE.getName(), FontStyle.NORMAL);
}
}
else
{
Log.debug(new Log.SimpleMessage("Unkown type of font attribute", fontConstant));
return null;
}
return attr;
}
}