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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: DefaultBoxDefinitionFactory.java 3524 2007-10-16 11:26:31Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.renderer.model;
import org.jfree.layouting.input.style.keys.border.BorderStyleKeys;
import org.jfree.layouting.input.style.keys.box.BoxStyleKeys;
import org.jfree.layouting.input.style.keys.color.CSSSystemColors;
import org.jfree.layouting.input.style.values.CSSAutoValue;
import org.jfree.layouting.input.style.values.CSSColorValue;
import org.jfree.layouting.input.style.values.CSSNumericValue;
import org.jfree.layouting.input.style.values.CSSValue;
import org.jfree.layouting.layouter.context.LayoutContext;
import org.jfree.layouting.output.OutputProcessorMetaData;
import org.jfree.layouting.renderer.border.Border;
import org.jfree.layouting.renderer.border.BorderFactory;
import org.jfree.layouting.renderer.border.RenderLength;
/**
* Creation-Date: 25.06.2006, 15:46:01
*
* @author Thomas Morgner
*/
public class DefaultBoxDefinitionFactory implements BoxDefinitionFactory
{
private BorderFactory borderFactory;
public DefaultBoxDefinitionFactory(final BorderFactory borderFactory)
{
this.borderFactory = borderFactory;
}
public BoxDefinition createBlockBoxDefinition(final LayoutContext boxContext,
final OutputProcessorMetaData metaData)
{
final Border border = borderFactory.createBorder(boxContext, metaData);
final DefaultBoxDefinition boxDefinition = new DefaultBoxDefinition();
boxDefinition.setBorder(border);
final CSSValue value = boxContext.getValue(BorderStyleKeys.BACKGROUND_COLOR);
if (value instanceof CSSColorValue)
{
boxDefinition.setBackgroundColor((CSSColorValue) value);
}
else
{
boxDefinition.setBackgroundColor(CSSSystemColors.TRANSPARENT);
}
fillHorizontalPadding(boxDefinition, boxContext, metaData);
boxDefinition.setPreferredWidth(computeWidth
(boxContext.getValue(BoxStyleKeys.WIDTH), boxContext, metaData, true, true));
boxDefinition.setMarginLeft(computeWidth
(boxContext.getValue(BoxStyleKeys.MARGIN_LEFT), boxContext, metaData, true, true));
boxDefinition.setMarginRight(computeWidth
(boxContext.getValue(BoxStyleKeys.MARGIN_RIGHT), boxContext, metaData, true, true));
fillVerticalModel(boxDefinition, boxContext, metaData);
return boxDefinition;
}
public BoxDefinition createInlineBoxDefinition(final LayoutContext boxContext,
final OutputProcessorMetaData metaData)
{
final Border border = borderFactory.createBorder(boxContext, metaData);
final DefaultBoxDefinition boxDefinition = new DefaultBoxDefinition();
boxDefinition.setBorder(border);
final CSSValue value = boxContext.getValue(BorderStyleKeys.BACKGROUND_COLOR);
if (value instanceof CSSColorValue)
{
boxDefinition.setBackgroundColor((CSSColorValue) value);
}
else
{
boxDefinition.setBackgroundColor(CSSSystemColors.TRANSPARENT);
}
fillHorizontalPadding(boxDefinition, boxContext, metaData);
// inline-elements have no way to define the width. (10.3.1 of CSS2.1)
// exception: inline-block elements can and will have a width.
// we move that evaluation into the layouter, that one may or may not
// use the preferred width ..
boxDefinition.setPreferredWidth(computeWidth
(boxContext.getValue(BoxStyleKeys.WIDTH), boxContext, metaData, true, true));
boxDefinition.setMarginLeft(computeWidth
(boxContext.getValue(BoxStyleKeys.MARGIN_LEFT), boxContext, metaData, false, true));
boxDefinition.setMarginRight(computeWidth
(boxContext.getValue(BoxStyleKeys.MARGIN_RIGHT), boxContext, metaData, false, true));
// second, the vertical model.
fillVerticalModel(boxDefinition, boxContext, metaData);
return boxDefinition;
}
private void fillVerticalModel(final DefaultBoxDefinition boxDefinition,
final LayoutContext boxContext,
final OutputProcessorMetaData metaData)
{
boxDefinition.setPaddingTop(computeWidth
(boxContext.getValue(BoxStyleKeys.PADDING_TOP), boxContext, metaData, false, false));
boxDefinition.setPaddingBottom(computeWidth
(boxContext.getValue(BoxStyleKeys.PADDING_BOTTOM), boxContext, metaData, false, false));
boxDefinition.setMarginTop(computeWidth
(boxContext.getValue(BoxStyleKeys.MARGIN_TOP), boxContext, metaData, false, true));
boxDefinition.setMarginBottom(computeWidth
(boxContext.getValue(BoxStyleKeys.MARGIN_BOTTOM), boxContext, metaData, false, true));
// I dont believe in Voodoo, therefore I dont follow Section 10.6.3 on the
// height computation. Auto-Values are now generally accepted, if no length
// has been specified explicitly. In that case we simply compute what ever
// comes in and do not overflow in any case.
boxDefinition.setPreferredHeight(computeWidth
(boxContext.getValue(BoxStyleKeys.HEIGHT), boxContext, metaData, true, true));
}
private void fillHorizontalPadding(final DefaultBoxDefinition boxDefinition,
final LayoutContext boxContext,
final OutputProcessorMetaData metaData)
{
// first, the horizontal model.
boxDefinition.setPaddingLeft(computeWidth
(boxContext.getValue(BoxStyleKeys.PADDING_LEFT),
boxContext, metaData, false, false));
boxDefinition.setPaddingRight(computeWidth
(boxContext.getValue(BoxStyleKeys.PADDING_RIGHT),
boxContext, metaData, false, false));
boxDefinition.setMaximumWidth(computeWidth
(boxContext.getValue(BoxStyleKeys.MAX_WIDTH),
boxContext, metaData, false, false));
boxDefinition.setMaximumHeight(computeWidth
(boxContext.getValue(BoxStyleKeys.MAX_HEIGHT),
boxContext, metaData, false, false));
boxDefinition.setMinimumWidth(computeWidth
(boxContext.getValue(BoxStyleKeys.MIN_WIDTH),
boxContext, metaData, false, false));
boxDefinition.setMinimumHeight(computeWidth
(boxContext.getValue(BoxStyleKeys.MIN_HEIGHT),
boxContext, metaData, false, false));
}
public static RenderLength computeWidth(final CSSValue widthValue,
final LayoutContext boxContext,
final OutputProcessorMetaData metaData,
final boolean allowAuto,
final boolean allowNegativeValues)
{
if (allowAuto && CSSAutoValue.getInstance().equals(widthValue))
{
return RenderLength.AUTO;
}
else if (widthValue instanceof CSSNumericValue == false)
{
return RenderLength.EMPTY;
}
else
{
final CSSNumericValue nval = (CSSNumericValue) widthValue;
if (nval.getValue() < 0 && allowNegativeValues == true)
{
return RenderLength.convertToInternal(widthValue, boxContext, metaData);
}
else if (nval.getValue() > 0)
{
final RenderLength renderLength = RenderLength.convertToInternal(widthValue, boxContext, metaData);
if (renderLength.getValue() > 0)
{
return renderLength;
}
}
return RenderLength.EMPTY;
}
}
}
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