/**
* ===========================================
* 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: FontFamilyResolveHandler.java,v 1.9 2007/04/02 11:41:14 taqua Exp $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.layouter.style.resolver.computed.fonts;
import org.jfree.fonts.registry.FontFamily;
import org.jfree.layouting.LayoutProcess;
import org.jfree.layouting.input.style.StyleKey;
import org.jfree.layouting.input.style.keys.font.FontFamilyValues;
import org.jfree.layouting.input.style.keys.font.FontStyleKeys;
import org.jfree.layouting.input.style.values.CSSConstant;
import org.jfree.layouting.input.style.values.CSSStringValue;
import org.jfree.layouting.input.style.values.CSSValue;
import org.jfree.layouting.input.style.values.CSSValueList;
import org.jfree.layouting.layouter.context.FontSpecification;
import org.jfree.layouting.layouter.context.LayoutContext;
import org.jfree.layouting.layouter.model.LayoutElement;
import org.jfree.layouting.layouter.style.resolver.computed.ConstantsResolveHandler;
import org.jfree.layouting.output.OutputProcessorMetaData;
import org.jfree.util.Log;
/**
* Creation-Date: 18.12.2005, 16:35:28
*
* @author Thomas Morgner
*/
public class FontFamilyResolveHandler extends ConstantsResolveHandler
{
public FontFamilyResolveHandler()
{
addNormalizeValue(FontFamilyValues.CURSIVE);
addNormalizeValue(FontFamilyValues.FANTASY);
addNormalizeValue(FontFamilyValues.MONOSPACE);
addNormalizeValue(FontFamilyValues.SANS_SERIF);
addNormalizeValue(FontFamilyValues.SERIF);
}
/**
* This indirectly defines the resolve order. The higher the order, the more
* dependent is the resolver on other resolvers to be complete.
*
* @return
*/
public StyleKey[] getRequiredStyles()
{
return new StyleKey[] {
FontStyleKeys.FONT_WEIGHT, FontStyleKeys.FONT_VARIANT,
FontStyleKeys.FONT_SMOOTH, FontStyleKeys.FONT_STRETCH
};
}
/**
* Resolves a single property.
*
* @param currentNode
* @param style
*/
public void resolve(LayoutProcess process,
LayoutElement currentNode,
StyleKey key)
{
//Log.debug ("Processing: " + currentNode);
final LayoutContext layoutContext = currentNode.getLayoutContext();
final FontSpecification fs =
layoutContext.getFontSpecification();
final OutputProcessorMetaData outputMetaData = process.getOutputMetaData();
final CSSValue cssValue = layoutContext.getValue(key);
if (cssValue instanceof CSSValueList)
{
CSSValueList list = (CSSValueList) cssValue;
for (int i = 0; i < list.getLength(); i++)
{
CSSValue item = list.getItem(i);
if (item instanceof CSSConstant)
{
final CSSConstant c = (CSSConstant) lookupValue((CSSConstant) item);
final FontFamily family = outputMetaData.getFontFamily(c);
fs.setFontFamily(family.getFamilyName());
if (process.getOutputMetaData().isValid(fs))
{
return;
}
// Ignore, although this is not ok.
Log.warn ("Invalid state after setting predefined font family.");
}
else if (item instanceof CSSStringValue)
{
final CSSStringValue sval = (CSSStringValue) item;
final String fontName = sval.getValue();
fs.setFontFamily(fontName);
if (process.getOutputMetaData().isValid(fs))
{
return;
}
}
}
}
else if (cssValue instanceof CSSConstant)
{
if (FontFamilyValues.NONE.equals(cssValue))
{
Log.info ("Font family has been set to 'none'.");
fs.setFontFamily(null);
return;
}
}
final FontFamily family = outputMetaData.getDefaultFontFamily();
fs.setFontFamily(family.getFamilyName());
if (process.getOutputMetaData().isValid(fs) == false)
{
throw new IllegalStateException
("Invalid state after setting the default font family.");
}
}
}