/**
* ===========================================
* 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: FontStretchResolveHandler.java 6653 2008-12-02 14:53:40Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.layouter.style.resolver.computed.fonts;
import org.jfree.layouting.LayoutProcess;
import org.jfree.layouting.input.style.StyleKey;
import org.jfree.layouting.input.style.keys.font.FontStretch;
import org.jfree.layouting.input.style.keys.font.FontStyleKeys;
import org.jfree.layouting.input.style.values.CSSConstant;
import org.jfree.layouting.input.style.values.CSSValue;
import org.jfree.layouting.layouter.context.LayoutContext;
import org.jfree.layouting.layouter.model.LayoutElement;
import org.jfree.layouting.layouter.style.resolver.computed.ConstantsResolveHandler;
/**
* Creation-Date: 18.12.2005, 20:33:42
*
* @author Thomas Morgner
*/
public class FontStretchResolveHandler extends ConstantsResolveHandler
{
public FontStretchResolveHandler()
{
addNormalizeValue(FontStretch.CONDENSED);
addNormalizeValue(FontStretch.EXPANDED);
addNormalizeValue(FontStretch.EXTRA_CONDENSED);
addNormalizeValue(FontStretch.EXTRA_EXPANDED);
addNormalizeValue(FontStretch.NORMAL);
addNormalizeValue(FontStretch.SEMI_CONDENSED);
addNormalizeValue(FontStretch.SEMI_EXPANDED);
addNormalizeValue(FontStretch.ULTRA_CONDENSED);
addNormalizeValue(FontStretch.ULTRA_EXPANDED);
}
/**
* Resolves a single property.
*
* @param currentNode
* @param style
*/
public void resolve(final LayoutProcess process,
final LayoutElement currentNode,
final StyleKey key)
{
final LayoutContext layoutContext = currentNode.getLayoutContext();
final CSSValue value = layoutContext.getValue(key);
final CSSConstant result;
if (FontStretch.WIDER.equals(value))
{
// ask the parent ...
final CSSConstant parentStretch = queryParent(currentNode.getParent());
result = FontStretch.getByOrder(FontStretch.getOrder(parentStretch) + 1);
}
else if (FontStretch.NARROWER.equals(value))
{
// ask the parent ...
final CSSConstant parentStretch = queryParent(currentNode.getParent());
result = FontStretch.getByOrder(FontStretch.getOrder(parentStretch) - 1);
}
else if (value instanceof CSSConstant)
{
final CSSConstant stretch = (CSSConstant) lookupValue((CSSConstant) value);
if (stretch != null)
{
result = stretch;
}
else
{
result = FontStretch.NORMAL;
}
}
else
{
result = FontStretch.NORMAL;
}
layoutContext.setValue(key, result);
}
private CSSConstant queryParent(final LayoutElement parent)
{
if (parent == null)
{
return FontStretch.NORMAL;
}
final CSSValue parentValue =
parent.getLayoutContext().getValue(FontStyleKeys.FONT_STRETCH);
if (parentValue == null)
{
return FontStretch.NORMAL;
}
// normalize ..
return FontStretch.getByOrder(FontStretch.getOrder(parentValue));
}
}