diff options
Diffstat (limited to 'src/main/java/org/pdfbox/pdmodel/font/PDFont.java')
| -rw-r--r-- | src/main/java/org/pdfbox/pdmodel/font/PDFont.java | 863 |
1 files changed, 0 insertions, 863 deletions
diff --git a/src/main/java/org/pdfbox/pdmodel/font/PDFont.java b/src/main/java/org/pdfbox/pdmodel/font/PDFont.java deleted file mode 100644 index 593c8b0..0000000 --- a/src/main/java/org/pdfbox/pdmodel/font/PDFont.java +++ /dev/null @@ -1,863 +0,0 @@ -/**
- * Copyright (c) 2003-2005, 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.pdfbox.afmparser.AFMParser;
-
-import org.pdfbox.afmtypes.FontMetric;
-
-import org.pdfbox.cmapparser.CMapParser;
-
-import org.pdfbox.cmaptypes.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 org.apache.log4j.Logger;
-
-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 (ben@csh.rit.edu)
- * @version $Revision: 1.32 $
- */
-public abstract class PDFont implements COSObjectable
-{
- private static Logger log = Logger.getLogger(PDFont.class);
-
- /**
- * 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( "ETenms-B5-H", "ETen-B5-H" );
- cmapSubstitutions.put( "ETenms-B5-V", "ETen-B5-V" );
- }
-
- /**
- * 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;
- }
-
- /**
- * @see COSObjectable#getCOSObject()
- */
- 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 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<data.length; i++ )
- {
- totalWidth+=getFontWidth( data, i, 1 );
- }
- return totalWidth;
- }
-
- /**
- * This will get the average font width for all characters.
- *
- * @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 getAverageFontWidth() throws IOException;
-
- /**
- * This will draw a string on a canvas using the font.
- *
- * @param string The string to draw.
- * @param g The graphics to draw onto.
- * @param fontSize The size of the font to draw.
- * @param xScale The x scaling percent.
- * @param yScale The y scaling percent.
- * @param x The x coordinate to draw at.
- * @param y The y coordinate to draw at.
- *
- * @throws IOException If there is an error drawing the specific string.
- */
- public abstract void drawString( String string, Graphics g, float fontSize,
- float xScale, float yScale, float x, float y ) throws IOException;
-
- /**
- * Used for multibyte encodings.
- *
- * @param data The array of data.
- * @param offset The offset into the array.
- * @param length The number of bytes to use.
- *
- * @return The int value of data from the array.
- */
- protected int getCodeFromArray( byte[] data, int offset, int length )
- {
- int code = 0;
- for( int i=0; i<length; i++ )
- {
- code <<= 8;
- code = (data[offset+i]+256)%256;
- }
- return code;
- }
-
- /**
- * This will attempt to get the font width from an AFM file.
- *
- * @param code The character code we are trying to get.
- *
- * @return The font width from the AFM file.
- *
- * @throws IOException if we cannot find the width.
- */
- protected float getFontWidthFromAFMFile( int code ) throws IOException
- {
- float retval = 0;
- FontMetric metric = getAFM();
- if( metric != null )
- {
- Encoding encoding = getEncoding();
- COSName characterName = encoding.getName( code );
- retval = metric.getCharacterWidth( characterName.getName() );
- }
- return retval;
- }
-
- /**
- * This will attempt to get the average font width from an AFM file.
- *
- * @return The average font width from the AFM file.
- *
- * @throws IOException if we cannot find the width.
- */
- protected float getAverageFontWidthFromAFMFile() throws IOException
- {
- float retval = 0;
- FontMetric metric = getAFM();
- if( metric != null )
- {
- retval = metric.getAverageCharacterWidth();
- }
- return retval;
- }
-
- /**
- * This will get an AFM object if one exists.
- *
- * @return The afm object from the name.
- *
- * @throws IOException If there is an error getting the AFM object.
- */
- protected FontMetric getAFM() throws IOException
- {
- COSName name = (COSName)font.getDictionaryObject( COSName.BASE_FONT );
- FontMetric result = null;
- if( name != null )
- {
- result = (FontMetric)afmObjects.get( name );
- if( result == null )
- {
- String resource = (String)afmResources.get( name );
- if( log.isDebugEnabled() )
- {
- log.debug("resource: " + resource + ", name: " + name.getName());
- }
- if( resource == null )
- {
- if( log.isDebugEnabled() )
- {
- log.debug( "resource is null" );
- }
- //ok for now
- //throw new IOException( "Unknown AFM font '" + name.getName() + "'" );
- }
- else
- {
- InputStream afmStream = ResourceLoader.loadResource( resource );
- if( afmStream == null )
- {
- throw new IOException( "Can't handle font width:" + resource );
- }
- AFMParser parser = new AFMParser( afmStream );
- parser.parse();
- result = parser.getResult();
- afmObjects.put( name, result );
- }
- }
- }
- return result;
- }
-
- /**
- * This will perform the encoding of a character if needed.
- *
- * @param c The character to encode.
- * @param offset The offset into the array to get the data
- * @param length The number of bytes to read.
- *
- * @return The value of the encoded character.
- *
- * @throws IOException If there is an error during the encoding.
- */
- public String encode( byte[] c, int offset, int length ) throws IOException
- {
- String retval = null;
- COSName fontSubtype = (COSName)font.getDictionaryObject( COSName.SUBTYPE );
- String fontSubtypeName = fontSubtype.getName();
- if( fontSubtypeName.equals( "Type0" ) ||
- fontSubtypeName.equals( "Type1" ) ||
- fontSubtypeName.equals( "TrueType" ))
- {
- if( cmap == null )
- {
- if( font.getDictionaryObject( COSName.TO_UNICODE ) != null )
- {
- COSStream toUnicode = (COSStream)font.getDictionaryObject( COSName.TO_UNICODE );
- if( toUnicode != null )
- {
- parseCmap( toUnicode.getUnfilteredStream(), null );
- if( log.isDebugEnabled() )
- {
- log.debug( "Getting embedded CMAP Stream from ToUnicode" );
- }
- }
- }
- else
- {
- COSBase encoding = font.getDictionaryObject( COSName.ENCODING );
- if( encoding instanceof COSStream )
- {
- COSStream encodingStream = (COSStream)encoding;
- parseCmap( encodingStream.getUnfilteredStream(), null );
- if( log.isDebugEnabled() )
- {
- log.debug( "Getting embedded CMAP Stream from encoding" );
- }
- }
- else if( fontSubtypeName.equals( "Type0" ) &&
- encoding instanceof COSName )
- {
- COSName encodingName = (COSName)encoding;
- cmap = (CMap)cmapObjects.get( encodingName );
- if( cmap != null )
- {
- cmap = (CMap)cmapObjects.get( encodingName );
- }
- else
- {
- if( log.isDebugEnabled() )
- {
- log.debug( "Getting CMAP Stream from resource" );
- }
- String cmapName = encodingName.getName();
- cmapName = performCMAPSubstitution( cmapName );
- String resourceName = "Resources/cmap/" + cmapName;
- parseCmap( ResourceLoader.loadResource( resourceName ), encodingName );
- if( cmap == null && !encodingName.getName().equals( COSName.IDENTITY_H.getName() ) )
- {
- throw new IOException( "Error: Could not find predefined " +
- "CMAP file for '" + encodingName.getName() + "'" );
- }
- }
- }
- else if( encoding instanceof COSName ||
- encoding instanceof COSDictionary )
- {
- Encoding currentFontEncoding = getEncoding();
- if( currentFontEncoding != null )
- {
- retval = currentFontEncoding.getCharacter( getCodeFromArray( c, offset, length ) );
- }
- }
- else
- {
- COSDictionary fontDescriptor =
- (COSDictionary)font.getDictionaryObject( COSName.FONT_DESC );
- if( fontSubtypeName.equals( "TrueType" ) &&
- fontDescriptor != null &&
- (fontDescriptor.getDictionaryObject( COSName.FONT_FILE )!= null ||
- fontDescriptor.getDictionaryObject( COSName.FONT_FILE2 ) != null ||
- fontDescriptor.getDictionaryObject( COSName.FONT_FILE3 ) != null ) )
- {
- //If we are using an embedded font then there is not much we can do besides
- //return the same character codes.
- //retval = new String( c,offset, length );
- retval = getStringFromArray( c, offset, length );
- }
- else
- {
- //this case will be handled below after checking the cmap
- }
- }
- }
-
-
- }
- }
- if( log.isDebugEnabled() )
- {
- log.debug( "retval=" + retval + " cmap=" + cmap);
- }
- if( retval == null && cmap != null )
- {
-
- retval = cmap.lookup( c, offset, length );
- if( log.isDebugEnabled() )
- {
- log.debug( "cmap.lookup(" +c + ")='" +retval + "'" );
- }
- }
- //if we havn't found a value yet and
- //we are still on the first byte and
- //there is no cmap or the cmap does not have 2 byte mappings then try to encode
- //using fallback methods.
- if( retval == null &&
- length == 1 &&
- (cmap == null || !cmap.hasTwoByteMappings()))
- {
- if( log.isDebugEnabled() )
- {
- log.debug( "No CMAP: Using fallback method");
- }
- Encoding encoding = getEncoding();
- if( encoding != null )
- {
- retval = encoding.getCharacter( getCodeFromArray( c, offset, length ) );
- }
- if( retval == null )
- {
- retval = getStringFromArray( c, offset, length );
- }
- }
- return retval;
- }
-
- private static final String[] SINGLE_CHAR_STRING = new String[256];
- private static final String[][] DOUBLE_CHAR_STRING = new String[256][256];
- static
- {
- for( int i=0; i<256; i++ )
- {
- SINGLE_CHAR_STRING[i] = new String( new byte[] {(byte)i} );
- for( int j=0; j<256; j++ )
- {
- DOUBLE_CHAR_STRING[i][j] = new String( new byte[] {(byte)i, (byte)j} );
- }
- }
- }
-
- private static String getStringFromArray( byte[] c, int offset, int length ) throws IOException
- {
- String retval = null;
- if( length == 1 )
- {
- retval = SINGLE_CHAR_STRING[(c[offset]+256)%256];
- }
- else if( length == 2 )
- {
- retval = DOUBLE_CHAR_STRING[(c[offset]+256)%256][(c[offset+1]+256)%256];
- }
- else
- {
- throw new IOException( "Error:Unknown character length:" + length );
- }
- return retval;
- }
-
- /**
- * Some cmap names are synonyms for other CMAPs. If that is the case
- * then this method will perform that substitution.
- *
- * @param cmapName The name of the cmap to attempt to look up.
- *
- * @return Either the original name or the substituted name.
- */
- private String performCMAPSubstitution( String cmapName )
- {
- String retval = (String)cmapSubstitutions.get( cmapName );
- if( retval == null )
- {
- //if there is no substitution then just return the same value.
- retval = cmapName;
- }
- return retval;
- }
-
- private void parseCmap( InputStream cmapStream, COSName encodingName ) throws IOException
- {
- if( log.isDebugEnabled() )
- {
- log.debug( "Parsing a new CMAP for font:" + font );
- }
- if( cmapStream != null )
- {
- CMapParser parser = new CMapParser( cmapStream, null );
- parser.parse();
- cmap = parser.getResult();
- if( encodingName != null )
- {
- cmapObjects.put( encodingName, cmap );
- }
- }
- }
-
- /**
- * The will set the encoding for this font.
- *
- * @param enc The font encoding.
- */
- public void setEncoding( Encoding enc )
- {
- font.setItem( COSName.ENCODING, enc );
- fontEncoding = enc;
- }
-
- /**
- * This will get or create the encoder.
- *
- * modified by Christophe Huault : DGBS Strasbourg huault@free.fr october 2004
- *
- * @return The encoding to use.
- *
- * @throws IOException If there is an error getting the encoding.
- */
- public Encoding getEncoding() throws IOException
- {
- EncodingManager manager = new EncodingManager();
- if( fontEncoding == null )
- {
- COSBase encoding = font.getDictionaryObject( COSName.ENCODING );
- if( encoding == null )
- {
- FontMetric metric = getAFM();
- if( metric != null )
- {
- fontEncoding = new AFMEncoding( metric );
- }
- if( fontEncoding == null )
- {
- fontEncoding = manager.getStandardEncoding();
- }
- }
- /**
- * Si la clé /Encoding existe dans le dictionnaire fonte il y a deux possibilités :
- * 1er cas : elle est associé à une reference contenant un dictionnaire de type encoding.
- * Ce dictionnaire PDF est représenté par un DictionaryEncoding.
- * If the /Encoding Key does exist in the font dictionary, there are two cases :
- * case one : The value associated with /Encoding is a reference to a dictionary.
- * This dictionary is represented by an instance of DictionaryEncoding class
- */
- else if( encoding instanceof COSDictionary )
- {
- COSDictionary encodingDic = (COSDictionary)encoding;
- //Let's see if the encoding dictionary has a base encoding
- //If it does not then we will attempt to get it from the font
- //file
- COSName baseEncodingName = (COSName) encodingDic.getDictionaryObject(
- COSName.BASE_ENCODING);
- //on ajoute une entrée /BaseEncoding dans /Encoding uniquement si elle en est absente
- //if not find in Encoding dictinary target, we try to find it from else where
- if( baseEncodingName == null)
- {
- COSName fontEncodingFromFile = getEncodingFromFont();
- encodingDic.setItem(
- COSName.BASE_ENCODING,
- fontEncodingFromFile );
- }
- fontEncoding = new DictionaryEncoding( encodingDic );
- }
- else if( encoding instanceof COSName )
- {
- if( !encoding.equals( COSName.IDENTITY_H ) )
- {
- fontEncoding = manager.getEncoding( (COSName)encoding );
- }
- }
- else
- {
- throw new IOException( "Unexpected encoding type:" + encoding.getClass().getName() );
- }
- }
- return fontEncoding;
- }
-
- /**
- * This will always return "Font" for fonts.
- *
- * @return The type of object that this is.
- */
- public String getType()
- {
- return font.getNameAsString( COSName.TYPE );
- }
-
- /**
- * This will get the subtype of font, Type1, Type3, ...
- *
- * @return The type of font that this is.
- */
- public String getSubType()
- {
- return font.getNameAsString( COSName.SUBTYPE );
- }
-
- /**
- * The PostScript name of the font.
- *
- * @return The postscript name of the font.
- */
- public String getBaseFont()
- {
- return font.getNameAsString( COSName.BASE_FONT );
- }
-
- /**
- * Set the PostScript name of the font.
- *
- * @param baseFont The postscript name for the font.
- */
- public void setBaseFont( String baseFont )
- {
- font.setName( COSName.BASE_FONT, baseFont );
- }
-
- /**
- * The code for the first char or -1 if there is none.
- *
- * @return The code for the first character.
- */
- public int getFirstChar()
- {
- return font.getInt( COSName.FIRST_CHAR, -1 );
- }
-
- /**
- * Set the first character this font supports.
- *
- * @param firstChar The first character.
- */
- public void setFirstChar( int firstChar )
- {
- font.setInt( COSName.FIRST_CHAR, firstChar );
- }
-
- /**
- * The code for the last char or -1 if there is none.
- *
- * @return The code for the last character.
- */
- public int getLastChar()
- {
- return font.getInt( COSName.LAST_CHAR, -1 );
- }
-
- /**
- * Set the last character this font supports.
- *
- * @param lastChar The last character.
- */
- public void setLastChar( int lastChar )
- {
- font.setInt( COSName.LAST_CHAR, lastChar );
- }
-
- /**
- * The widths of the characters. This will be null for the standard 14 fonts.
- *
- * @return The widths of the characters.
- */
- public List getWidths()
- {
- COSArray array = (COSArray)font.getDictionaryObject( COSName.WIDTHS );
- return COSArrayList.convertFloatCOSArrayToList( array );
- }
-
- /**
- * Set the widths of the characters code.
- *
- * @param widths The widths of the character codes.
- */
- public void setWidths( List widths )
- {
- font.setItem( COSName.WIDTHS, COSArrayList.converterToCOSArray( widths ) );
- }
-
- /**
- * This will get the matrix that is used to transform glyph space to
- * text space. By default there are 1000 glyph units to 1 text space
- * unit, but type3 fonts can use any value.
- *
- * Note:If this is a type3 font then it can be modified via the PDType3Font.setFontMatrix, otherwise this
- * is a read-only property.
- *
- * @return The matrix to transform from glyph space to text space.
- */
- public PDMatrix getFontMatrix()
- {
- PDMatrix matrix = null;
- COSArray array = (COSArray)font.getDictionaryObject( COSName.FONT_MATRIX );
- if( array == null )
- {
- array = new COSArray();
- array.add( new COSFloat( 0.001f ) );
- array.add( COSNumber.ZERO );
- array.add( COSNumber.ZERO );
- array.add( new COSFloat( 0.001f ) );
- array.add( COSNumber.ZERO );
- array.add( COSNumber.ZERO );
- }
- matrix = new PDMatrix(array);
-
- return matrix;
- }
-
- /**
- * Try to get the encoding for the font and add it to the target
- * the target must be an an Encoding Dictionary.
- *
- * added by Christophe Huault : DGBS Strasbourg huault@free.fr october 2004
- *
- * @return The encoding from the font.
- *
- * @throws IOException If there is an error reading the file.
- */
- private COSName getEncodingFromFont() throws IOException
- {
- //This whole section of code needs to be replaced with an actual
- //type1 font parser!!
-
-
- COSName retvalue = null;
- //recuperer le programme de fonte dans son stream qui doit se trouver
- //dans le flux référencé par à la clé FileFont lui même situé dans
- //le dictionnaire associé à /FontDescriptor du dictionnaire de type /Font courrant
- //get the font program in the stream which should be located in
- //the /FileFont Stream object himself in the /FontDescriptior of the current
- //font dictionary
- COSDictionary fontDescriptor = (COSDictionary) font.getDictionaryObject(
- COSName.FONT_DESC);
- if( fontDescriptor != null )
- {
- COSStream fontFile = (COSStream) fontDescriptor.getDictionaryObject(
- COSName.FONT_FILE);
- if( fontFile != null )
- {
- BufferedReader in =
- new BufferedReader(new InputStreamReader(fontFile.getUnfilteredStream()));
- /**
- * this section parse the FileProgram stream searching for a /Encoding entry
- * the research stop if the entry "currentdict end" is reach or after 100 lignes
- */
- StringTokenizer st = null;
- boolean found = false;
- String line = "";
- String key = null;
- for( int i = 0; null!=( line = in.readLine() ) &&
- i < 40 &&
- !line.equals("currentdict end")
- && !found; i++)
- {
- st = new StringTokenizer(line);
- if( st.hasMoreTokens() )
- {
- key = st.nextToken();
- if(key.equals("/Encoding") && st.hasMoreTokens() )
- {
- COSName value = COSName.getPDFName( st.nextToken() );
- found = true;
- if( value.equals( COSName.MAC_ROMAN_ENCODING ) ||
- value.equals( COSName.PDF_DOC_ENCODING ) ||
- value.equals( COSName.STANDARD_ENCODING ) ||
- value.equals( COSName.WIN_ANSI_ENCODING ) )
- {
- //value is expected to be one of the encodings
- //ie. StandardEncoding,WinAnsiEncoding,MacRomanEncoding,PDFDocEncoding
- retvalue = value;
- }
- }
- }
- }
- }
- }
- return retvalue;
- }
-
- /**
- * This will get the fonts bouding box.
- *
- * @return The fonts bouding box.
- *
- * @throws IOException If there is an error getting the bounding box.
- */
- public abstract PDRectangle getFontBoundingBox() throws IOException;
-
- /**
- * @see Object#equals( Object )
- */
- public boolean equals( Object other )
- {
- return other instanceof PDFont && ((PDFont)other).getCOSObject() == this.getCOSObject();
- }
-
- /**
- * @see Object#hashCode()
- */
- public int hashCode()
- {
- return this.getCOSObject().hashCode();
- }
-}
\ No newline at end of file |