com.itextpdf.text.pdf
Class TrueTypeFontUnicode

java.lang.Object
  extended by com.itextpdf.text.pdf.BaseFont
      extended by com.itextpdf.text.pdf.TrueTypeFont
          extended by com.itextpdf.text.pdf.TrueTypeFontUnicode
All Implemented Interfaces:
Comparator<int[]>

 class TrueTypeFontUnicode
extends TrueTypeFont
implements Comparator<int[]>

Represents a True Type font with Unicode encoding. All the character in the font can be used directly by using the encoding Identity-H or Identity-V. This is the only way to represent some character sets such as Thai.

Author:
Paulo Soares

Nested Class Summary
 
Nested classes/interfaces inherited from class com.itextpdf.text.pdf.TrueTypeFont
TrueTypeFont.FontHeader, TrueTypeFont.HorizontalHeader, TrueTypeFont.WindowsMetrics
 
Nested classes/interfaces inherited from class com.itextpdf.text.pdf.BaseFont
BaseFont.StreamFont
 
Field Summary
private static byte[] rotbits
           
(package private)  boolean vertical
          true if the encoding is vertical.
 
Fields inherited from class com.itextpdf.text.pdf.TrueTypeFont
allNameEntries, bboxes, cff, cffLength, cffOffset, cmap10, cmap31, cmapExt, codePages, directoryOffset, familyName, fileName, fontName, fullName, GlyphWidths, head, hhea, isFixedPitch, italicAngle, justNames, kerning, os_2, rf, style, tables, ttcIndex, underlinePosition, underlineThickness
 
Fields inherited from class com.itextpdf.text.pdf.BaseFont
ASCENT, AWT_ASCENT, AWT_DESCENT, AWT_LEADING, AWT_MAXADVANCE, BBOXLLX, BBOXLLY, BBOXURX, BBOXURY, BuiltinFonts14, CACHED, CAPHEIGHT, CHAR_RANGE_ARABIC, CHAR_RANGE_CYRILLIC, CHAR_RANGE_HEBREW, CHAR_RANGE_LATIN, charBBoxes, CID_NEWLINE, compressionLevel, COURIER, COURIER_BOLD, COURIER_BOLDOBLIQUE, COURIER_OBLIQUE, CP1250, CP1252, CP1257, DESCENT, differences, directTextToByte, embedded, EMBEDDED, encoding, fastWinansi, FONT_TYPE_CJK, FONT_TYPE_DOCUMENT, FONT_TYPE_T1, FONT_TYPE_T3, FONT_TYPE_TT, FONT_TYPE_TTUNI, fontCache, fontSpecific, fontType, forceWidthsOutput, HELVETICA, HELVETICA_BOLD, HELVETICA_BOLDOBLIQUE, HELVETICA_OBLIQUE, IDENTITY_H, IDENTITY_V, ITALICANGLE, MACROMAN, NOT_CACHED, NOT_EMBEDDED, notdef, RESOURCE_PATH, specialMap, STRIKETHROUGH_POSITION, STRIKETHROUGH_THICKNESS, SUBSCRIPT_OFFSET, SUBSCRIPT_SIZE, subset, subsetRanges, SUPERSCRIPT_OFFSET, SUPERSCRIPT_SIZE, SYMBOL, TIMES_BOLD, TIMES_BOLDITALIC, TIMES_ITALIC, TIMES_ROMAN, UNDERLINE_POSITION, UNDERLINE_THICKNESS, unicodeDifferences, widths, WINANSI, ZAPFDINGBATS
 
Constructor Summary
TrueTypeFontUnicode(String ttFile, String enc, boolean emb, byte[] ttfAfm, boolean forceRead)
          Creates a new TrueType font addressed by Unicode characters.
 
Method Summary
 boolean charExists(int c)
          Checks if a character exists in this font.
 int compare(int[] o1, int[] o2)
          The method used to sort the metrics array.
(package private)  byte[] convertToBytes(int char1)
          Converts a char to a byte array according to the font's encoding.
(package private)  byte[] convertToBytes(String text)
          A forbidden operation.
 int[] getCharBBox(int c)
          Gets the smallest box enclosing the character contours.
private  PdfDictionary getCIDFontType2(PdfIndirectReference fontDescriptor, String subsetPrefix, Object[] metrics)
          Generates the CIDFontTyte2 dictionary.
private  PdfDictionary getFontBaseType(PdfIndirectReference descendant, String subsetPrefix, PdfIndirectReference toUnicode)
          Generates the font dictionary.
 PdfStream getFullFontStream()
          Returns a PdfStream object with the full font program.
 int[] getMetricsTT(int c)
          Gets the glyph index and metrics for a character.
private  PdfStream getToUnicode(Object[] metrics)
          Creates a ToUnicode CMap to allow copy and paste from Acrobat.
 int getWidth(int char1)
          Gets the width of a char in normalized 1000 units.
 int getWidth(String text)
          Gets the width of a String in normalized 1000 units.
 boolean setCharAdvance(int c, int advance)
          Sets the character advance.
(package private) static String toHex(int n)
          Gets an hex string in the format "<HHHH>".
private static String toHex4(int n)
           
(package private)  void writeFont(PdfWriter writer, PdfIndirectReference ref, Object[] params)
          Outputs to the writer the font dictionaries and streams.
 
Methods inherited from class com.itextpdf.text.pdf.TrueTypeFont
addRangeUni, addRangeUni, checkCff, compactRanges, fillTables, getAllNameEntries, getAllNames, getBaseFont, getCodePagesSupported, getFamilyFontName, getFontBaseType, getFontDescriptor, getFontDescriptor, getFullFont, getFullFontName, getGlyphWidth, getKerning, getNames, getPostscriptFontName, getRawCharBBox, getRawWidth, getTTCName, hasKernPairs, process, readCffFont, readCMaps, readFormat0, readFormat12, readFormat4, readFormat6, readGlyphWidths, readKerning, readStandardString, readUnicodeString, setKerning, setPostscriptFontName
 
Methods inherited from class com.itextpdf.text.pdf.BaseFont
addSubsetRange, correctArabicAdvance, createEncoding, createFont, createFont, createFont, createFont, createFont, createFont, createFont, createSubsetPrefix, enumerateTTCNames, enumerateTTCNames, getAllFontNames, getAllNameEntries, getAscent, getAscentPoint, getBaseName, getCidCode, getCompressionLevel, getDescent, getDescentPoint, getDifferences, getDocumentFonts, getDocumentFonts, getEncoding, getFontType, getFullFontName, getResourceStream, getResourceStream, getUnicodeDifferences, getUnicodeDifferences, getUnicodeEquivalent, getWidthPoint, getWidthPoint, getWidthPointKerned, getWidths, isDirectTextToByte, isEmbedded, isFontSpecific, isForceWidthsOutput, isSubset, normalizeEncoding, setCompressionLevel, setDirectTextToByte, setForceWidthsOutput, setSubset
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface java.util.Comparator
equals
 

Field Detail

vertical

boolean vertical
true if the encoding is vertical.


rotbits

private static final byte[] rotbits
Constructor Detail

TrueTypeFontUnicode

TrueTypeFontUnicode(String ttFile,
                    String enc,
                    boolean emb,
                    byte[] ttfAfm,
                    boolean forceRead)
              throws DocumentException,
                     IOException
Creates a new TrueType font addressed by Unicode characters. The font will always be embedded.

Parameters:
ttFile - the location of the font on file. The file must end in '.ttf'. The modifiers after the name are ignored.
enc - the encoding to be applied to this font
emb - true if the font is to be embedded in the PDF
ttfAfm - the font as a byte array
Throws:
DocumentException - the font is invalid
IOException - the font file could not be read
Method Detail

getWidth

public int getWidth(int char1)
Gets the width of a char in normalized 1000 units.

Overrides:
getWidth in class BaseFont
Parameters:
char1 - the unicode char to get the width of
Returns:
the width in normalized 1000 units

getWidth

public int getWidth(String text)
Gets the width of a String in normalized 1000 units.

Overrides:
getWidth in class BaseFont
Parameters:
text - the String to get the width of
Returns:
the width in normalized 1000 units

getToUnicode

private PdfStream getToUnicode(Object[] metrics)
Creates a ToUnicode CMap to allow copy and paste from Acrobat.

Parameters:
metrics - metrics[0] contains the glyph index and metrics[2] contains the Unicode code
Returns:
the stream representing this CMap or null

toHex4

private static String toHex4(int n)

toHex

static String toHex(int n)
Gets an hex string in the format "<HHHH>".

Parameters:
n - the number
Returns:
the hex string

getCIDFontType2

private PdfDictionary getCIDFontType2(PdfIndirectReference fontDescriptor,
                                      String subsetPrefix,
                                      Object[] metrics)
Generates the CIDFontTyte2 dictionary.

Parameters:
fontDescriptor - the indirect reference to the font descriptor
subsetPrefix - the subset prefix
metrics - the horizontal width metrics
Returns:
a stream

getFontBaseType

private PdfDictionary getFontBaseType(PdfIndirectReference descendant,
                                      String subsetPrefix,
                                      PdfIndirectReference toUnicode)
Generates the font dictionary.

Parameters:
descendant - the descendant dictionary
subsetPrefix - the subset prefix
toUnicode - the ToUnicode stream
Returns:
the stream

compare

public int compare(int[] o1,
                   int[] o2)
The method used to sort the metrics array.

Specified by:
compare in interface Comparator<int[]>
Parameters:
o1 - the first element
o2 - the second element
Returns:
the comparison

writeFont

void writeFont(PdfWriter writer,
               PdfIndirectReference ref,
               Object[] params)
         throws DocumentException,
                IOException
Outputs to the writer the font dictionaries and streams.

Overrides:
writeFont in class TrueTypeFont
Parameters:
writer - the writer for this document
ref - the font indirect reference
params - several parameters that depend on the font type
Throws:
IOException - on error
DocumentException - error in generating the object

getFullFontStream

public PdfStream getFullFontStream()
                            throws IOException,
                                   DocumentException
Returns a PdfStream object with the full font program.

Overrides:
getFullFontStream in class TrueTypeFont
Returns:
a PdfStream with the font program
Throws:
IOException
DocumentException
Since:
2.1.3

convertToBytes

byte[] convertToBytes(String text)
A forbidden operation. Will throw a null pointer exception.

Overrides:
convertToBytes in class BaseFont
Parameters:
text - the text
Returns:
always null

convertToBytes

byte[] convertToBytes(int char1)
Description copied from class: BaseFont
Converts a char to a byte array according to the font's encoding.

Overrides:
convertToBytes in class BaseFont
Parameters:
char1 - the char to be converted
Returns:
an array of byte representing the conversion according to the font's encoding

getMetricsTT

public int[] getMetricsTT(int c)
Gets the glyph index and metrics for a character.

Overrides:
getMetricsTT in class TrueTypeFont
Parameters:
c - the character
Returns:
an int array with {glyph index, width}

charExists

public boolean charExists(int c)
Checks if a character exists in this font.

Overrides:
charExists in class BaseFont
Parameters:
c - the character to check
Returns:
true if the character has a glyph, false otherwise

setCharAdvance

public boolean setCharAdvance(int c,
                              int advance)
Sets the character advance.

Overrides:
setCharAdvance in class BaseFont
Parameters:
c - the character
advance - the character advance normalized to 1000 units
Returns:
true if the advance was set, false otherwise

getCharBBox

public int[] getCharBBox(int c)
Description copied from class: BaseFont
Gets the smallest box enclosing the character contours. It will return null if the font has not the information or the character has no contours, as in the case of the space, for example. Characters with no contours may also return [0,0,0,0].

Overrides:
getCharBBox in class BaseFont
Parameters:
c - the character to get the contour bounding box from
Returns:
an array of four floats with the bounding box in the format [llx,lly,urx,ury] or null

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