/*
* 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.util;
import java.awt.Insets;
import java.awt.print.PageFormat;
import java.awt.print.Paper;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* The PageFormatFactory is used to create PageFormats on a higher level. The Factory contains templates for all
* PageSizes defined by Adobe:
* <p/>
* <a href="http://partners.adobe.com/asn/developer/pdfs/tn/5003.PPD_Spec_v4.3.pdf" >Postscript Specifications</a>
* <p/>
* Usage for creating an printjob on A4 paper with 2.5 cm border:
* <pre>
* Paper paper = PageFormatFactory.createPaper (PageSize.A4);
* PageFormatFactory.setBordersMm (paper, 25, 25, 25, 25);
* PageFormat format = PageFormatFactory.createPageFormat (paper, PageFormat.PORTRAIT);
* </code>
* <p/>
* Defining a pageformat can be an ugly task and full of dependencies. The call to
* PageFormatFactory.setBorders(...) will setup the paper's border and always assumes
* that the paper is laid out in Portrait.
* <p/>
* Changing the PageFormat's orientation does not change the PageFormat's paper object,
* but it changes the way, how the paper object is interpreted.
*
* @author Thomas Morgner
*/
public final class PageFormatFactory
{
private static final Log logger = LogFactory.getLog(PageFormatFactory.class);
/**
* A single instance of the factory.
*/
private static PageFormatFactory singleton;
private static final String[] EMPTY_PAGEFORMATS = new String[0];
/**
* Default constructor.
*/
private PageFormatFactory()
{
}
/**
* Returns a single instance of the factory.
*
* @return an instance of a PageFormatFactory.
*/
public static synchronized PageFormatFactory getInstance()
{
if (singleton == null)
{
singleton = new PageFormatFactory();
}
return singleton;
}
/**
* Creates a paper by using the paper size in points found in the int-array. The array must have a length of 2 and the
* first value of this array has to contain the width and the second the height parameter. The created Paper has no
* ImagableArea defined.
*
* @param papersize the definition of the papersize in a 2-element int-array
* @return the created paper
*/
public Paper createPaper(final int[] papersize)
{
if (papersize.length != 2)
{
throw new IllegalArgumentException("Paper must have a width and a height");
}
return createPaper((double) papersize[0], (double) papersize[1]);
}
/**
* Creates a paper by using the paper size in points found in the int-array. The array must have a length of 2 and the
* first value of this array has to contain the width and the second the height parameter. The created Paper has no
* ImagableArea defined.
*
* @param papersize the definition of the papersize in a 2-element int-array
* @return the created paper
*/
public Paper createPaper(final PageSize papersize)
{
return createPaper(papersize.getWidth(), papersize.getHeight());
}
/**
* Creates a paper by using the paper size in points. The created Paper has no ImagableArea defined.
*
* @param width the width of the paper in points
* @param height the height of the paper in points
* @return the created paper
*/
public Paper createPaper(final double width, final double height)
{
final Paper p = new Paper();
p.setSize(width, height);
setBorders(p, 0, 0, 0, 0);
return p;
}
/**
* Defines the imageable area of the given paper by adjusting the border around the imagable area. The bordersizes are
* given in points.
*
* @param paper the paper that should be modified
* @param top the bordersize of the top-border
* @param left the border in points in the left
* @param bottom the border in points in the bottom
* @param right the border in points in the right
*/
public void setBorders(final Paper paper, final double top,
final double left, final double bottom, final double right)
{
final double w = paper.getWidth() - (right + left);
final double h = paper.getHeight() - (bottom + top);
paper.setImageableArea(left, top, w, h);
}
/**
* Defines the imageable area of the given paper by adjusting the border around the imagable area. The bordersizes are
* given in inches.
*
* @param paper the paper that should be modified
* @param top the bordersize of the top-border
* @param left the border in points in the left
* @param bottom the border in points in the bottom
* @param right the border in points in the right
*/
public void setBordersInch
(final Paper paper, final double top, final double left,
final double bottom, final double right)
{
setBorders(paper, convertInchToPoints(top), convertInchToPoints(left),
convertInchToPoints(bottom), convertInchToPoints(right));
}
/**
* Defines the imageable area of the given paper by adjusting the border around the imagable area. The bordersizes are
* given in millimeters.
*
* @param paper the paper that should be modified
* @param top the bordersize of the top-border
* @param left the border in points in the left
* @param bottom the border in points in the bottom
* @param right the border in points in the right
*/
public void setBordersMm
(final Paper paper, final double top, final double left,
final double bottom, final double right)
{
setBorders(paper, convertMmToPoints(top), convertMmToPoints(left),
convertMmToPoints(bottom), convertMmToPoints(right));
}
/**
* Converts the given inch value to a valid point-value.
*
* @param inches the size in inch
* @return the size in points
*/
public double convertInchToPoints(final double inches)
{
return inches * 72.0f;
}
/**
* Converts the given millimeter value to a valid point-value.
*
* @param mm the size in inch
* @return the size in points
*/
public double convertMmToPoints(final double mm)
{
return mm * (72.0d / 254.0d) * 10;
}
/**
* Creates a new pageformat using the given paper and the given orientation.
*
* @param paper the paper to use in the new pageformat
* @param orientation one of PageFormat.PORTRAIT, PageFormat.LANDSCAPE or PageFormat.REVERSE_LANDSCAPE
* @return the created Pageformat
* @throws NullPointerException if the paper given was null
*/
public PageFormat createPageFormat(final Paper paper, final int orientation)
{
if (paper == null)
{
throw new NullPointerException("Paper given must not be null");
}
final PageFormat pf = new PageFormat();
pf.setPaper(paper);
pf.setOrientation(orientation);
return pf;
}
/**
* Creates a paper by looking up the given Uppercase name in this classes defined constants. The value if looked up by
* introspection, if the value is not defined in this class, null is returned.
*
* @param name the name of the constant defining the papersize
* @return the defined paper or null, if the name was invalid.
*/
public Paper createPaper(final String name)
{
try
{
final Field f = PageSize.class.getDeclaredField(name);
final Object o = f.get(null);
if (o instanceof PageSize == false)
{
// Log.debug ("Is no valid pageformat definition");
return null;
}
final PageSize pageformat = (PageSize) o;
return createPaper(pageformat);
}
catch (NoSuchFieldException nfe)
{
// Log.debug ("There is no pageformat " + name + " defined.");
return null;
}
catch (IllegalAccessException aie)
{
// Log.debug ("There is no pageformat " + name + " accessible.");
return null;
}
}
/**
* Logs the page format.
*
* @param pf the page format.
*/
public static void logPageFormat(final PageFormat pf)
{
logger.debug("PageFormat: Width: " + pf.getWidth() + " Height: " + pf.getHeight());
logger.debug("PageFormat: Image: X " + pf.getImageableX()
+ " Y " + pf.getImageableY()
+ " W: " + pf.getImageableWidth()
+ " H: " + pf.getImageableHeight());
logger.debug("PageFormat: Margins: X " + pf.getImageableX()
+ " Y " + pf.getImageableY()
+ " X2: " + (pf.getImageableWidth() + pf.getImageableX())
+ " Y2: " + (pf.getImageableHeight() + pf.getImageableY()));
}
/**
* Logs the paper size.
*
* @param pf the paper size.
*/
public static void logPaper(final Paper pf)
{
logger.debug("Paper: Width: " + pf.getWidth() + " Height: " + pf.getHeight());
logger.debug("Paper: Image: X " + pf.getImageableX()
+ " Y " + pf.getImageableY()
+ " H: " + pf.getImageableHeight()
+ " W: " + pf.getImageableWidth());
}
/**
* Tests, whether the given two page format objects are equal.
*
* @param pf1 the first page format that should be compared.
* @param pf2 the second page format that should be compared.
* @return true, if both page formats are equal, false otherwise.
*/
public static boolean isEqual(final PageFormat pf1, final PageFormat pf2)
{
if (pf1 == pf2)
{
return true;
}
if (pf1 == null || pf2 == null)
{
return false;
}
if (pf1.getOrientation() != pf2.getOrientation())
{
return false;
}
final Paper p1 = pf1.getPaper();
final Paper p2 = pf2.getPaper();
if (p1.getWidth() != p2.getWidth())
{
return false;
}
if (p1.getHeight() != p2.getHeight())
{
return false;
}
if (p1.getImageableX() != p2.getImageableX())
{
return false;
}
if (p1.getImageableY() != p2.getImageableY())
{
return false;
}
if (p1.getImageableWidth() != p2.getImageableWidth())
{
return false;
}
if (p1.getImageableHeight() != p2.getImageableHeight())
{
return false;
}
return true;
}
/**
* Returns the left border of the given paper.
*
* @param p the paper that defines the borders.
* @return the left border.
*/
public double getLeftBorder(final Paper p)
{
return p.getImageableX();
}
/**
* Returns the right border of the given paper.
*
* @param p the paper that defines the borders.
* @return the right border.
*/
public double getRightBorder(final Paper p)
{
return p.getWidth() - (p.getImageableX() + p.getImageableWidth());
}
/**
* Returns the top border of the given paper.
*
* @param p the paper that defines the borders.
* @return the top border.
*/
public double getTopBorder(final Paper p)
{
return p.getImageableY();
}
/**
* Returns the bottom border of the given paper.
*
* @param p the paper that defines the borders.
* @return the bottom border.
*/
public double getBottomBorder(final Paper p)
{
return p.getHeight() - (p.getImageableY() + p.getImageableHeight());
}
public Insets getPageMargins(final PageFormat format)
{
final int marginLeft = (int) format.getImageableX();
final int marginRight = (int)
(format.getWidth() - format.getImageableWidth() - format.getImageableX());
final int marginTop = (int) (format.getImageableY());
final int marginBottom = (int)
(format.getHeight() - format.getImageableHeight() - format.getImageableY());
return new Insets(marginTop, marginLeft, marginBottom, marginRight);
}
public String getPageFormatName(final double width, final double height)
{
try
{
final Field[] fields = PageSize.class.getFields();
for (int i = 0; i < fields.length; i++)
{
final Field f = fields[i];
if (Modifier.isPublic(f.getModifiers()) && Modifier.isStatic(f.getModifiers()))
{
final Object o = f.get(PageFormatFactory.getInstance());
if (o instanceof PageSize)
{
final PageSize pageDef = (PageSize) o;
if (pageDef.getWidth() == width && pageDef.getHeight() == height)
{
return f.getName();
}
}
}
}
}
catch (Exception e)
{
PageFormatFactory.logger.warn("Unable to lookup the page name", e);
}
return null;
}
public String[] getPageFormats()
{
try
{
final ArrayList a = new ArrayList();
final Field[] fields = PageSize.class.getFields();
for (int i = 0; i < fields.length; i++)
{
final Field f = fields[i];
if (Modifier.isPublic(f.getModifiers()) && Modifier.isStatic(f.getModifiers()))
{
final Object o = f.get(PageFormatFactory.getInstance());
if (o instanceof PageSize)
{
a.add(f.getName());
}
}
}
return (String[]) a.toArray(new String[a.size()]);
}
catch (Exception e)
{
PageFormatFactory.logger.warn("Unable to lookup the page name", e);
}
return PageFormatFactory.EMPTY_PAGEFORMATS;
}
public void setPageMargins(final PageFormat pageFormat, final Insets pageMargins)
{
final Paper paper = pageFormat.getPaper();
setBorders(paper, pageMargins.top, pageMargins.left, pageMargins.bottom, pageMargins.right);
pageFormat.setPaper(paper);
}
}
|