Package org.pentaho.reporting.libraries.css.parser.stylehandler.page

Source Code of org.pentaho.reporting.libraries.css.parser.stylehandler.page.SizeReadHandler

/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
*/

package org.pentaho.reporting.libraries.css.parser.stylehandler.page;

import java.awt.print.PageFormat;

import org.pentaho.reporting.libraries.css.keys.page.PageSize;
import org.pentaho.reporting.libraries.css.keys.page.PageSizeFactory;
import org.pentaho.reporting.libraries.css.model.StyleKey;
import org.pentaho.reporting.libraries.css.parser.CSSValueReadHandler;
import org.pentaho.reporting.libraries.css.parser.stylehandler.AbstractWidthReadHandler;
import org.pentaho.reporting.libraries.css.values.CSSAutoValue;
import org.pentaho.reporting.libraries.css.values.CSSNumericValue;
import org.pentaho.reporting.libraries.css.values.CSSValue;
import org.pentaho.reporting.libraries.css.values.CSSValuePair;
import org.w3c.css.sac.LexicalUnit;

/**
* Creation-Date: 30.11.2005, 18:04:27
*
* @author Thomas Morgner
*/
public class SizeReadHandler extends AbstractWidthReadHandler
    implements CSSValueReadHandler
{
  public SizeReadHandler()
  {
    super(true, false);
  }

  public CSSValue createValue(StyleKey name, LexicalUnit value)
  {
    if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT)
    {
      String ident = value.getStringValue();
      if (ident.equalsIgnoreCase("auto"))
      {
        return CSSAutoValue.getInstance();
      }
      final PageSize ps = PageSizeFactory.getInstance().getPageSizeByName(ident);
      if (ps == null)
      {
        return null;
      }

      value = value.getNextLexicalUnit();
      int pageOrientation = PageFormat.PORTRAIT;
      if (value != null)
      {
        if (value.getLexicalUnitType() != LexicalUnit.SAC_IDENT)
        {
          return null;
        }

        if (value.getStringValue().equalsIgnoreCase("landscape"))
        {
          pageOrientation = PageFormat.LANDSCAPE;
        }
        else if (value.getStringValue().equalsIgnoreCase("reverse-landscape"))
        {
          pageOrientation = PageFormat.REVERSE_LANDSCAPE;
        }
        else if (value.getStringValue().equalsIgnoreCase("portrait"))
        {
          pageOrientation = PageFormat.PORTRAIT;
        }
        else
        {
          return null;
        }
      }

      if (pageOrientation == PageFormat.LANDSCAPE ||
          pageOrientation == PageFormat.REVERSE_LANDSCAPE)
      {
        return new CSSValuePair(CSSNumericValue.createPtValue(ps.getHeight()),
            CSSNumericValue.createPtValue(ps.getWidth()));
      }
      else
      {
        return new CSSValuePair(CSSNumericValue.createPtValue(ps.getWidth()),
            CSSNumericValue.createPtValue(ps.getHeight()));
      }
    }
    else
    {
      final CSSNumericValue horizontalWidth = (CSSNumericValue) parseWidth(value);
      if (horizontalWidth == null)
      {
        return null;
      }

      value = value.getNextLexicalUnit();

      final CSSNumericValue verticalWidth;
      if (value == null)
      {
        verticalWidth = horizontalWidth;
      }
      else
      {
        verticalWidth = (CSSNumericValue) parseWidth(value);
        if (verticalWidth == null)
        {
          return null;
        }
      }

      return new CSSValuePair(horizontalWidth, verticalWidth);
    }
  }

}
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