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/**
* Copyright (c) 2003-2006, www.pdfbox.org
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of pdfbox; nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* http://www.pdfbox.org
*
*/
package org.pdfbox.pdmodel.font;
import org.fontbox.afm.AFMParser;
import org.fontbox.afm.FontMetric;
import org.fontbox.cmap.CMapParser;
import org.fontbox.cmap.CMap;
import org.pdfbox.encoding.AFMEncoding;
import org.pdfbox.encoding.DictionaryEncoding;
import org.pdfbox.encoding.Encoding;
import org.pdfbox.encoding.EncodingManager;
import org.pdfbox.cos.COSArray;
import org.pdfbox.cos.COSBase;
import org.pdfbox.cos.COSDictionary;
import org.pdfbox.cos.COSFloat;
import org.pdfbox.cos.COSName;
import org.pdfbox.cos.COSNumber;
import org.pdfbox.cos.COSStream;
import org.pdfbox.pdmodel.common.COSArrayList;
import org.pdfbox.pdmodel.common.COSObjectable;
import org.pdfbox.pdmodel.common.PDMatrix;
import org.pdfbox.pdmodel.common.PDRectangle;
import org.pdfbox.util.ResourceLoader;
import java.awt.Graphics;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
/**
* This is the base class for all PDF fonts.
*
* @author Ben Litchfield
* @version $Revision: 1.43 $
*/
public abstract class PDFont implements COSObjectable
{
/**
* The cos dictionary for this font.
*/
protected COSDictionary font;
/**
* This is only used if this is a font object and it has an encoding.
*/
private Encoding fontEncoding = null;
/**
* This is only used if this is a font object and it has an encoding and it is
* a type0 font with a cmap.
*/
private CMap cmap = null;
private static Map afmResources = null;
private static Map cmapObjects = null;
private static Map afmObjects = null;
private static Map cmapSubstitutions = null;
static
{
//these are read-only once they are created
afmResources = new HashMap();
cmapSubstitutions = new HashMap();
//these are read-write
cmapObjects = Collections.synchronizedMap( new HashMap() );
afmObjects = Collections.synchronizedMap( new HashMap() );
afmResources.put( COSName.getPDFName( "Courier-Bold" ), "Resources/afm/Courier-Bold.afm" );
afmResources.put( COSName.getPDFName( "Courier-BoldOblique" ), "Resources/afm/Courier-BoldOblique.afm" );
afmResources.put( COSName.getPDFName( "Courier" ), "Resources/afm/Courier.afm" );
afmResources.put( COSName.getPDFName( "Courier-Oblique" ), "Resources/afm/Courier-Oblique.afm" );
afmResources.put( COSName.getPDFName( "Helvetica" ), "Resources/afm/Helvetica.afm" );
afmResources.put( COSName.getPDFName( "Helvetica-Bold" ), "Resources/afm/Helvetica-Bold.afm" );
afmResources.put( COSName.getPDFName( "Helvetica-BoldOblique" ), "Resources/afm/Helvetica-BoldOblique.afm" );
afmResources.put( COSName.getPDFName( "Helvetica-Oblique" ), "Resources/afm/Helvetica-Oblique.afm" );
afmResources.put( COSName.getPDFName( "Symbol" ), "Resources/afm/Symbol.afm" );
afmResources.put( COSName.getPDFName( "Times-Bold" ), "Resources/afm/Times-Bold.afm" );
afmResources.put( COSName.getPDFName( "Times-BoldItalic" ), "Resources/afm/Times-BoldItalic.afm" );
afmResources.put( COSName.getPDFName( "Times-Italic" ), "Resources/afm/Times-Italic.afm" );
afmResources.put( COSName.getPDFName( "Times-Roman" ), "Resources/afm/Times-Roman.afm" );
afmResources.put( COSName.getPDFName( "ZapfDingbats" ), "Resources/afm/ZapfDingbats.afm" );
cmapSubstitutions.put( "ETen-B5-H", "ETen-B5-UCS2" );
cmapSubstitutions.put( "ETen-B5-V", "ETen-B5-UCS2" );
cmapSubstitutions.put( "ETenms-B5-H", "ETen-B5-UCS2" );
cmapSubstitutions.put( "ETenms-B5-V", "ETen-B5-UCS2" );
cmapSubstitutions.put( "90ms-RKSJ-H", "90ms-RKSJ-UCS2" );
cmapSubstitutions.put( "90ms-RKSJ-V", "90ms-RKSJ-UCS2" );
cmapSubstitutions.put( "90msp-RKSJ-H", "90ms-RKSJ-UCS2" );
cmapSubstitutions.put( "90msp-RKSJ-V", "90ms-RKSJ-UCS2" );
cmapSubstitutions.put( "GBK-EUC-H", "GBK-EUC-UCS2" );
cmapSubstitutions.put( "GBK-EUC-V", "GBK-EUC-UCS2" );
cmapSubstitutions.put( "GBpc-EUC-H", "GBpc-EUC-UCS2C" );
cmapSubstitutions.put( "GBpc-EUC-V", "GBpc-EUC-UCS2C" );
cmapSubstitutions.put( "UniJIS-UCS2-HW-H", "UniJIS-UCS2-H" );
}
/**
* This will clear AFM resources that are stored statically.
* This is usually not a problem unless you want to reclaim
* resources for a long running process.
*
* SPECIAL NOTE: The font calculations are currently in COSObject, which
* is where they will reside until PDFont is mature enough to take them over.
* PDFont is the appropriate place for them and not in COSObject but we need font
* calculations for text extractaion. THIS METHOD WILL BE MOVED OR REMOVED
* TO ANOTHER LOCATION IN A FUTURE VERSION OF PDFBOX.
*/
public static void clearResources()
{
afmObjects.clear();
cmapObjects.clear();
}
/**
* Constructor.
*/
public PDFont()
{
font = new COSDictionary();
font.setItem( COSName.TYPE, COSName.FONT );
}
/**
* Constructor.
*
* @param fontDictionary The font dictionary according to the PDF specification.
*/
public PDFont( COSDictionary fontDictionary )
{
font = fontDictionary;
}
/**
* {@inheritDoc}
*/
public COSBase getCOSObject()
{
return font;
}
/**
* This will get the font width for a character.
*
* @param c The character code to get the width for.
* @param offset The offset into the array.
* @param length The length of the data.
*
* @return The width is in 1000 unit of text space, ie 333 or 777
*
* @throws IOException If an error occurs while parsing.
*/
public abstract float getFontWidth( byte[] c, int offset, int length ) throws IOException;
/**
* This will get the font width for a character.
*
* @param c The character code to get the width for.
* @param offset The offset into the array.
* @param length The length of the data.
*
* @return The width is in 1000 unit of text space, ie 333 or 777
*
* @throws IOException If an error occurs while parsing.
*/
public abstract float getFontHeight( byte[] c, int offset, int length ) throws IOException;
/**
* This will get the width of this string for this font.
*
* @param string The string to get the width of.
*
* @return The width of the string in 1000 units of text space, ie 333 567...
*
* @throws IOException If there is an error getting the width information.
*/
public float getStringWidth( String string ) throws IOException
{
byte[] data = string.getBytes();
float totalWidth = 0;
for( int i=0; i