diff options
Diffstat (limited to 'src/main/java/org/pdfbox/pdmodel/font/PDTrueTypeFont.java')
| -rw-r--r-- | src/main/java/org/pdfbox/pdmodel/font/PDTrueTypeFont.java | 437 |
1 files changed, 437 insertions, 0 deletions
diff --git a/src/main/java/org/pdfbox/pdmodel/font/PDTrueTypeFont.java b/src/main/java/org/pdfbox/pdmodel/font/PDTrueTypeFont.java new file mode 100644 index 0000000..d462255 --- /dev/null +++ b/src/main/java/org/pdfbox/pdmodel/font/PDTrueTypeFont.java @@ -0,0 +1,437 @@ +/**
+ * 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.cos.COSDictionary;
+import org.pdfbox.cos.COSName;
+
+import org.pdfbox.pdmodel.PDDocument;
+
+import org.pdfbox.pdmodel.common.PDRectangle;
+import org.pdfbox.pdmodel.common.PDStream;
+
+import org.pdfbox.encoding.WinAnsiEncoding;
+
+import org.pdfbox.ttf.CMAPEncodingEntry;
+import org.pdfbox.ttf.CMAPTable;
+import org.pdfbox.ttf.GlyphData;
+import org.pdfbox.ttf.GlyphTable;
+import org.pdfbox.ttf.HeaderTable;
+import org.pdfbox.ttf.HorizontalHeaderTable;
+import org.pdfbox.ttf.HorizontalMetricsTable;
+import org.pdfbox.ttf.MemoryTTFDataStream;
+import org.pdfbox.ttf.NamingTable;
+import org.pdfbox.ttf.NameRecord;
+import org.pdfbox.ttf.OS2WindowsMetricsTable;
+import org.pdfbox.ttf.PostScriptTable;
+import org.pdfbox.ttf.TTFParser;
+import org.pdfbox.ttf.TrueTypeFont;
+import org.pdfbox.util.ResourceLoader;
+
+import java.awt.Font;
+import java.awt.FontFormatException;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.AffineTransform;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * This is the TrueType implementation of fonts.
+ *
+ * @author Ben Litchfield (ben@benlitchfield.com)
+ * @version $Revision: 1.14 $
+ */
+public class PDTrueTypeFont extends PDSimpleFont
+{
+ /**
+ * This is the key to a property in the Resources/PDFBox_External_Fonts.properties file
+ * to load a Font when a mapping does not exist for the current font.
+ */
+ public static final String UNKNOWN_FONT = "UNKNOWN_FONT";
+
+ private Font awtFont = null;
+
+ private static Properties externalFonts = new Properties();
+ private static Map loadedExternalFonts = new HashMap();
+
+ static
+ {
+ try
+ {
+ ResourceLoader.loadProperties( "Resources/PDFBox_External_Fonts.properties", externalFonts );
+ }
+ catch( IOException io )
+ {
+ io.printStackTrace();
+ throw new RuntimeException( "Error loading font resources" );
+ }
+ }
+
+
+ /**
+ * Constructor.
+ */
+ public PDTrueTypeFont()
+ {
+ super();
+ font.setItem( COSName.SUBTYPE, COSName.TRUE_TYPE );
+ }
+
+ /**
+ * Constructor.
+ *
+ * @param fontDictionary The font dictionary according to the PDF specification.
+ */
+ public PDTrueTypeFont( COSDictionary fontDictionary )
+ {
+ super( fontDictionary );
+ }
+
+ /**
+ * This will load a TTF font from a font file.
+ *
+ * @param doc The PDF document that will hold the embedded font.
+ * @param file The file on the filesystem that holds the font file.
+ * @return A true type font.
+ * @throws IOException If there is an error loading the file data.
+ */
+ public static PDTrueTypeFont loadTTF( PDDocument doc, String file ) throws IOException
+ {
+ return loadTTF( doc, new File( file ) );
+ }
+
+ /**
+ * This will load a TTF to be embedding into a document.
+ *
+ * @param doc The PDF document that will hold the embedded font.
+ * @param file A TTF file stream.
+ * @return A PDF TTF.
+ * @throws IOException If there is an error loading the data.
+ */
+ public static PDTrueTypeFont loadTTF( PDDocument doc, File file ) throws IOException
+ {
+ PDTrueTypeFont retval = new PDTrueTypeFont();
+ PDFontDescriptorDictionary fd = new PDFontDescriptorDictionary();
+ PDStream fontStream = new PDStream(doc, new FileInputStream( file ), false );
+ fontStream.getStream().setInt( COSName.LENGTH1, (int)file.length() );
+ fontStream.addCompression();
+ fd.setFontFile2( fontStream );
+ retval.setFontDescriptor( fd );
+ //only support winansi encoding right now, should really
+ //just use Identity-H with unicode mapping
+ retval.setEncoding( new WinAnsiEncoding() );
+ TrueTypeFont ttf = null;
+ try
+ {
+ TTFParser parser = new TTFParser();
+ ttf = parser.parseTTF( file );
+ NamingTable naming = ttf.getNaming();
+ List records = naming.getNameRecords();
+ for( int i=0; i<records.size(); i++ )
+ {
+ NameRecord nr = (NameRecord)records.get( i );
+ if( nr.getNameId() == NameRecord.NAME_POSTSCRIPT_NAME )
+ {
+ retval.setBaseFont( nr.getString() );
+ fd.setFontName( nr.getString() );
+ }
+ else if( nr.getNameId() == NameRecord.NAME_FONT_FAMILY_NAME )
+ {
+ fd.setFontFamily( nr.getString() );
+ }
+ }
+
+ OS2WindowsMetricsTable os2 = ttf.getOS2Windows();
+ fd.setNonSymbolic( true );
+ switch( os2.getFamilyClass() )
+ {
+ case OS2WindowsMetricsTable.FAMILY_CLASS_SYMBOLIC:
+ fd.setSymbolic( true );
+ fd.setNonSymbolic( false );
+ break;
+ case OS2WindowsMetricsTable.FAMILY_CLASS_SCRIPTS:
+ fd.setScript( true );
+ break;
+ case OS2WindowsMetricsTable.FAMILY_CLASS_CLAREDON_SERIFS:
+ case OS2WindowsMetricsTable.FAMILY_CLASS_FREEFORM_SERIFS:
+ case OS2WindowsMetricsTable.FAMILY_CLASS_MODERN_SERIFS:
+ case OS2WindowsMetricsTable.FAMILY_CLASS_OLDSTYLE_SERIFS:
+ case OS2WindowsMetricsTable.FAMILY_CLASS_SLAB_SERIFS:
+ fd.setSerif( true );
+ break;
+ default:
+ //do nothing
+ }
+ switch( os2.getWidthClass() )
+ {
+ case OS2WindowsMetricsTable.WIDTH_CLASS_ULTRA_CONDENSED:
+ fd.setFontStretch( "UltraCondensed" );
+ break;
+ case OS2WindowsMetricsTable.WIDTH_CLASS_EXTRA_CONDENSED:
+ fd.setFontStretch( "ExtraCondensed" );
+ break;
+ case OS2WindowsMetricsTable.WIDTH_CLASS_CONDENSED:
+ fd.setFontStretch( "Condensed" );
+ break;
+ case OS2WindowsMetricsTable.WIDTH_CLASS_SEMI_CONDENSED:
+ fd.setFontStretch( "SemiCondensed" );
+ break;
+ case OS2WindowsMetricsTable.WIDTH_CLASS_MEDIUM:
+ fd.setFontStretch( "Normal" );
+ break;
+ case OS2WindowsMetricsTable.WIDTH_CLASS_SEMI_EXPANDED:
+ fd.setFontStretch( "SemiExpanded" );
+ break;
+ case OS2WindowsMetricsTable.WIDTH_CLASS_EXPANDED:
+ fd.setFontStretch( "Expanded" );
+ break;
+ case OS2WindowsMetricsTable.WIDTH_CLASS_EXTRA_EXPANDED:
+ fd.setFontStretch( "ExtraExpanded" );
+ break;
+ case OS2WindowsMetricsTable.WIDTH_CLASS_ULTRA_EXPANDED:
+ fd.setFontStretch( "UltraExpanded" );
+ break;
+ default:
+ //do nothing
+ }
+ fd.setFontWeight( os2.getWeightClass() );
+
+ //todo retval.setFixedPitch
+ //todo retval.setNonSymbolic
+ //todo retval.setItalic
+ //todo retval.setAllCap
+ //todo retval.setSmallCap
+ //todo retval.setForceBold
+
+ HeaderTable header = ttf.getHeader();
+ PDRectangle rect = new PDRectangle();
+ rect.setLowerLeftX( header.getXMin() * 1000f/header.getUnitsPerEm() );
+ rect.setLowerLeftY( header.getYMin() * 1000f/header.getUnitsPerEm() );
+ rect.setUpperRightX( header.getXMax() * 1000f/header.getUnitsPerEm() );
+ rect.setUpperRightY( header.getYMax() * 1000f/header.getUnitsPerEm() );
+ fd.setFontBoundingBox( rect );
+
+ HorizontalHeaderTable hHeader = ttf.getHorizontalHeader();
+ fd.setAscent( hHeader.getAscender() * 1000f/header.getUnitsPerEm() );
+ fd.setDescent( hHeader.getDescender() * 1000f/header.getUnitsPerEm() );
+
+ GlyphTable glyphTable = ttf.getGlyph();
+ GlyphData[] glyphs = glyphTable.getGlyphs();
+
+ PostScriptTable ps = ttf.getPostScript();
+ fd.setFixedPitch( ps.getIsFixedPitch() > 0 );
+ fd.setItalicAngle( ps.getItalicAngle() );
+
+ String[] names = ps.getGlyphNames();
+ if( names != null )
+ {
+ for( int i=0; i<names.length; i++ )
+ {
+ //if we have a capital H then use that, otherwise use the
+ //tallest letter
+ if( names[i].equals( "H" ) )
+ {
+ fd.setCapHeight( (glyphs[i].getBoundingBox().getUpperRightY()* 1000f)/
+ header.getUnitsPerEm() );
+ }
+ if( names[i].equals( "x" ) )
+ {
+ fd.setXHeight( (glyphs[i].getBoundingBox().getUpperRightY()* 1000f)/header.getUnitsPerEm() );
+ }
+ }
+ }
+
+ //hmm there does not seem to be a clear definition for StemV,
+ //this is close enough and I am told it doesn't usually get used.
+ fd.setStemV( (fd.getFontBoundingBox().getWidth() * .13f) );
+
+
+ CMAPTable cmapTable = ttf.getCMAP();
+ CMAPEncodingEntry[] cmaps = cmapTable.getCmaps();
+ int[] glyphToCCode = null;
+ for( int i=0; i<cmaps.length; i++ )
+ {
+ if( cmaps[i].getPlatformId() == CMAPTable.PLATFORM_WINDOWS &&
+ cmaps[i].getPlatformEncodingId() == CMAPTable.ENCODING_UNICODE )
+ {
+ glyphToCCode = cmaps[i].getGlyphIdToCharacterCode();
+ }
+ }
+ int firstChar = 0;
+ /**
+ for( int i=0; i<glyphToCCode.length; i++ )
+ {
+ if( glyphToCCode[i] != 0 )
+ {
+ firstChar = Math.min( glyphToCCode[i], firstChar );
+ }
+ }*/
+
+ int maxWidths=256;
+ HorizontalMetricsTable hMet = ttf.getHorizontalMetrics();
+ int[] widthValues = hMet.getAdvanceWidth();
+ List widths = new ArrayList( widthValues.length );
+ Integer zero = new Integer( 250 );
+ for( int i=0; i<widthValues.length && i<maxWidths; i++ )
+ {
+ widths.add( zero );
+ }
+ for( int i=0; i<widthValues.length; i++ )
+ {
+ if(glyphToCCode[i]-firstChar < widths.size() &&
+ glyphToCCode[i]-firstChar >= 0 &&
+ widths.get( glyphToCCode[i]-firstChar) == zero )
+ {
+ widths.set( glyphToCCode[i]-firstChar,
+ new Integer( (int)(widthValues[i]* 1000f)/header.getUnitsPerEm() ) );
+ }
+ }
+ retval.setWidths( widths );
+
+ retval.setFirstChar( firstChar );
+ retval.setLastChar( firstChar + widths.size()-1 );
+
+ }
+ finally
+ {
+ if( ttf != null )
+ {
+ ttf.close();
+ }
+ }
+
+ return retval;
+ }
+
+ /**
+ * @see PDFont#drawString( String, Graphics, float, float, float, float, float )
+ */
+ public void drawString( String string, Graphics g, float fontSize,
+ float xScale, float yScale, float x, float y ) throws IOException
+ {
+ PDFontDescriptorDictionary fd = (PDFontDescriptorDictionary)getFontDescriptor();
+ if( awtFont == null )
+ {
+ PDStream ttfStream = fd.getFontFile2();
+ String fontName = fd.getFontName();
+ awtFont = Font.getFont( fontName, null );
+ if( ttfStream == null )
+ {
+ //throw new IOException( "Error:TTF Stream is null");
+ // Embedded true type programs are optional,
+ // if there is no stream, we must use an external
+ // file.
+ ttfStream = getExternalFontFile2( fd );
+ }
+ if( ttfStream == null )
+ {
+ //if we can't find a font then just fake it.
+ awtFont = new Font("Arial", Font.PLAIN, 1 );
+ }
+ else
+ {
+ try
+ {
+ awtFont = Font.createFont( Font.TRUETYPE_FONT, ttfStream.createInputStream() );
+ }
+ catch( FontFormatException e )
+ {
+ throw new IOException( e.getMessage() );
+ }
+ }
+ }
+ AffineTransform at = new AffineTransform();
+ at.scale( xScale, yScale );
+ Graphics2D g2d = (Graphics2D)g;
+ g2d.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON );
+ g2d.setFont( awtFont.deriveFont( at ).deriveFont( fontSize ) );
+ g2d.drawString( string, (int)x, (int)y );
+ }
+
+ /**
+ * Permit to load an external TTF Font program file
+ *
+ * Created by Pascal Allain
+ * Vertical7 Inc.
+ *
+ * @param fd The font descriptor currently used
+ *
+ * @return A PDStream with the Font File program, null if fd is null
+ *
+ * @throws IOException If the font is not found
+ */
+ private PDStream getExternalFontFile2(PDFontDescriptorDictionary fd)
+ throws IOException
+ {
+ PDStream retval = null;
+
+ if ( fd != null )
+ {
+ String baseFont = getBaseFont();
+ String fontResource = externalFonts.getProperty( UNKNOWN_FONT );
+ if( (baseFont != null) &&
+ (externalFonts.containsKey(baseFont)) )
+ {
+ fontResource = externalFonts.getProperty(baseFont);
+ }
+ if( fontResource != null )
+ {
+ TrueTypeFont extTTF = (TrueTypeFont)loadedExternalFonts.get( baseFont );
+ if( extTTF == null )
+ {
+ TTFParser ttfParser = new TTFParser();
+ InputStream is = ResourceLoader.loadResource( fontResource );
+ if( is == null )
+ {
+ throw new IOException( "Error missing font resource '" + externalFonts.get(baseFont) + "'" );
+ }
+ MemoryTTFDataStream stream = new MemoryTTFDataStream( is );
+ extTTF = ttfParser.parseTTF( stream );
+ loadedExternalFonts.put( baseFont, extTTF );
+ }
+ retval = extTTF.getPDStream();
+ }
+ }
+
+ return retval;
+ }
+}
\ No newline at end of file |