Package org.pentaho.reporting.engine.classic.core.modules.output.table.xls.helper

Source Code of org.pentaho.reporting.engine.classic.core.modules.output.table.xls.helper.ExcelPrintSetupFactory

/*
* 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) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors..  All rights reserved.
*/

package org.pentaho.reporting.engine.classic.core.modules.output.table.xls.helper;

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;

import org.apache.poi.hssf.usermodel.HSSFPrintSetup;
import org.apache.poi.ss.usermodel.PrintSetup;
import org.pentaho.reporting.engine.classic.core.layout.model.PhysicalPageBox;
import org.pentaho.reporting.engine.classic.core.util.PageSize;

/**
* Performs all steps to setup the printer page of an excel sheet.
* <p/>
* This list is based on the specifications found in the OpenOffice documentation. <a
* href="http://sc.openoffice.org/excelfileformat.pdf"> http://sc.openoffice.org/excelfileformat.pdf</a>.
*
* @author user
*/
public final class ExcelPrintSetupFactory
{
  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition LETTER = new ExcelPageDefinition
      ((short) 1, PageSize.LETTER);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition LETTER_SMALL = new ExcelPageDefinition
      ((short) 2, PageSize.LETTER_SMALL);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition TABLOID = new ExcelPageDefinition
      ((short) 3, PageSize.TABLOID);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition LEDGER = new ExcelPageDefinition
      ((short) 4, PageSize.LEDGER);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition LEGAL = new ExcelPageDefinition
      ((short) 5, PageSize.LEGAL);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition STATEMENT = new ExcelPageDefinition
      ((short) 6, PageSize.STATEMENT);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition EXECUTIVE = new ExcelPageDefinition
      ((short) 7, PageSize.EXECUTIVE);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition A3 = new ExcelPageDefinition
      ((short) 8, PageSize.A3);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition A4 = new ExcelPageDefinition
      ((short) 9, PageSize.A4);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition A4_SMALL = new ExcelPageDefinition
      ((short) 10, PageSize.A4_SMALL);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition A5 = new ExcelPageDefinition
      ((short) 11, PageSize.A5);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition B4 = new ExcelPageDefinition
      ((short) 12, PageSize.B4);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition B5 = new ExcelPageDefinition
      ((short) 13, PageSize.B5);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition FOLIO = new ExcelPageDefinition
      ((short) 14, PageSize.FOLIO);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition QUARTO = new ExcelPageDefinition
      ((short) 15, PageSize.QUARTO);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition PAPER10X14 = new ExcelPageDefinition
      ((short) 16, PageSize.PAPER10X14);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition PAPER11X17 = new ExcelPageDefinition
      ((short) 17, PageSize.PAPER11X17);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition NOTE = new ExcelPageDefinition
      ((short) 18, PageSize.NOTE);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENV9 = new ExcelPageDefinition
      ((short) 19, PageSize.ENV9);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENV10 = new ExcelPageDefinition
      ((short) 20, PageSize.ENV10);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENV11 = new ExcelPageDefinition
      ((short) 21, PageSize.ENV11);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENV12 = new ExcelPageDefinition
      ((short) 22, PageSize.ENV12);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENV14 = new ExcelPageDefinition
      ((short) 23, PageSize.ENV14);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVDL = new ExcelPageDefinition
      ((short) 27, PageSize.ENVDL);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVC5 = new ExcelPageDefinition
      ((short) 28, PageSize.ENVC5);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVC3 = new ExcelPageDefinition
      ((short) 29, PageSize.ENVC3);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVC4 = new ExcelPageDefinition
      ((short) 30, PageSize.ENVC4);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVC6 = new ExcelPageDefinition
      ((short) 31, PageSize.ENVC6);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVC65 = new ExcelPageDefinition
      ((short) 32, PageSize.ENVC65);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVISOB4 = new ExcelPageDefinition
      ((short) 33, PageSize.ENVISOB4);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVB5 = new ExcelPageDefinition
      ((short) 34, PageSize.ENVISOB5);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVB6 = new ExcelPageDefinition
      ((short) 35, PageSize.ENVISOB6);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVELOPE = new ExcelPageDefinition
      ((short) 36, PageSize.ENVELOPE);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVMONARCH = new ExcelPageDefinition
      ((short) 37, PageSize.ENVMONARCH);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition ENVPERSONAL = new ExcelPageDefinition// envelope 6 3/4
      ((short) 38, PageSize.ENVPERSONAL);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition FANFOLDUS = new ExcelPageDefinition
      ((short) 39, PageSize.FANFOLDUS);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition FANFOLDGERMAN = new ExcelPageDefinition
      ((short) 40, PageSize.FANFOLDGERMAN);

  /**
   * A standard page format mapping for excel.
   */
  public static final ExcelPageDefinition FANFOLDGERMANLEGAL = new ExcelPageDefinition
      ((short) 41, PageSize.FANFOLDGERMANLEGAL);

  /**
   * Default Constructor.
   */
  private ExcelPrintSetupFactory()
  {
  }

  /**
   * Performs the page setup and searches a matching page format for the report.
   *
   * @param printSetup       the print setup object of the current sheet.
   * @param pageformat       the pageformat defined for the report.
   * @param paperdef         the excel paper size property (may be null).
   * @param paperOrientation the paper orientation, either "Landscape" or "Portrait"
   */
  public static void performPageSetup(final PrintSetup printSetup,
                                      final PhysicalPageBox pageformat,
                                      final String paperdef,
                                      final String paperOrientation)
  {
    short pageCode = ExcelPrintSetupFactory.parsePaperSizeProperty(paperdef);
    if (pageCode == -1)
    {
      pageCode = ExcelPrintSetupFactory.computePaperSize(pageformat);
    }
    if (pageCode != -1)
    {
      printSetup.setPaperSize(pageCode);
    }
    if (paperOrientation != null && paperOrientation.equals("auto") == false)
    {
      printSetup.setLandscape("Landscape".equalsIgnoreCase(paperOrientation));
    }
    else
    {
      final boolean landscape = pageformat.getWidth() > pageformat.getHeight();
      printSetup.setLandscape(landscape);
    }
  }

  /**
   * Searches all defined excel page formats to find a page format that matches the given pageformat. If no matching
   * format was found, the next greater page format is used.
   * <p/>
   * If no page format fits the definition, -1 is returned.
   *
   * @param format the page format
   * @return the computed paper size or -1 if no paper size matches the requirements
   */
  private static short computePaperSize(final PhysicalPageBox format)
  {
    ExcelPageDefinition pageDef = null;
    final int width = (int) format.getWidth();
    final int height = (int) format.getHeight();
    int delta = -1;

    final Field[] fields = ExcelPrintSetupFactory.class.getDeclaredFields();
    for (int i = 0; i < fields.length; i++)
    {
      final Field field = fields[i];
      if (ExcelPageDefinition.class.isAssignableFrom(field.getType()) == false)
      {
        // Log.debug ("Is no valid pageformat definition");
        continue;
      }
      if (Modifier.isStatic(field.getModifiers()) == false)
      {
        // is no static field, who defined it here?
        continue;
      }
      try
      {
        final ExcelPageDefinition pageformat = (ExcelPageDefinition) field.get(null);
        if ((pageformat.getWidth() < width) || (pageformat.getHeight() < height))
        {
          // paper is too small, ignore it
          continue;
        }
        final int newDelta = (pageformat.getWidth() - width) + (pageformat.getHeight() - height);
        if ((delta == -1) || (newDelta < delta))
        {
          pageDef = pageformat;
          delta = newDelta;
        }
      }
      catch (IllegalAccessException iae)
      {
        // ignore ..
      }
    }
    if (pageDef == null)
    {
      return -1;
    }
    else
    {
      return pageDef.getPageFormatCode();
    }
  }

  /**
   * Parses the defined paper size for the excel sheets. The paper size can be defined using the report configuration
   * properties.
   *
   * @param paper the paper constant for the excel page size.
   * @return the parsed HSSF paper size constant or -1 if undefined.
   */
  private static short parsePaperSizeProperty(final String paper)
  {
    if (paper == null)
    {
      return -1;
    }
    try
    {
      final Field field = ExcelPrintSetupFactory.class.getDeclaredField(paper);
      if (ExcelPageDefinition.class.isAssignableFrom(field.getType()) == false)
      {
        // Log.debug ("Is no valid pageformat definition");
        return -1;
      }
      final Object o = field.get(null);
      final ExcelPageDefinition pageformat = (ExcelPageDefinition) o;
      return pageformat.getPageFormatCode();
    }
    catch (NoSuchFieldException nfe)
    {
      // Log.debug ("There is no pageformat " + name + " defined.");
      return -1;
    }
    catch (IllegalAccessException aie)
    {
      // Log.debug ("There is no pageformat " + name + " accessible.");
      return -1;
    }
  }

}
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