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/**
* ===========================================
* 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: ReplacedContentAlignContext.java 3524 2007-10-16 11:26:31Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.renderer.process.valign;
import org.jfree.layouting.renderer.model.RenderableReplacedContent;
import org.jfree.layouting.renderer.text.ExtendedBaselineInfo;
import org.jfree.layouting.renderer.border.RenderLength;
import org.jfree.layouting.util.geom.StrictDimension;
/**
* A generic align context for images and other nodes. (Renderable-Content
* should have been aligned by the parent.
*
* @author Thomas Morgner
*/
public class ReplacedContentAlignContext extends AlignContext
{
private long shift;
private long height;
public ReplacedContentAlignContext(final RenderableReplacedContent node)
{
super(node);
final StrictDimension contentSize = node.getContentSize();
// we better compute the height of the content or we will run into
// trouble ..
if (RenderLength.AUTO.equals(node.getRequestedWidth()))
{
// if width is auto, and height is auto,
if (RenderLength.AUTO.equals(node.getRequestedHeight()))
{
// use the intrinsic height ..
height = contentSize.getHeight();
}
// if height is not auto, but the width is, then use the declared height.
else
{
// A percentage is now relative to the intrinsinc size.
// And yes, I'm aware that this is not what the standard says ..
final RenderLength blockContextWidth =
node.getComputedLayoutProperties().getBlockContextWidth();
height = node.getRequestedHeight().resolve(blockContextWidth.resolve(0));
}
}
else
{
// width is not auto.
// If the height is auto, we have to preserve the aspect ratio ..
if (RenderLength.AUTO.equals(node.getRequestedHeight()))
{
if (contentSize.getWidth() > 0)
{
final RenderLength blockContextWidth =
node.getComputedLayoutProperties().getBlockContextWidth();
final long computedWidth =
node.getRequestedWidth().resolve(blockContextWidth.resolve(0));
// Requested height must be computed to preserve the aspect ratio.
height = computedWidth * contentSize.getHeight()/contentSize.getWidth();
}
else
{
height = 0;
}
}
else
{
// height is something fixed ..
final RenderLength blockContextWidth =
node.getComputedLayoutProperties().getBlockContextWidth();
height = node.getRequestedHeight().resolve(blockContextWidth.resolve(0));
}
}
}
public long getBaselineDistance(final int baseline)
{
if (baseline == ExtendedBaselineInfo.BEFORE_EDGE)
{
return 0;
}
if (baseline == ExtendedBaselineInfo.TEXT_BEFORE_EDGE)
{
return 0;
}
// oh that's soooo primitive ..
return height;
}
public void shift(final long delta)
{
this.shift += delta;
}
public long getAfterEdge()
{
return shift + height;
}
public long getBeforeEdge()
{
return shift;
}
}
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