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/*
* $Id$
* ============================================================================
* The Apache Software License, Version 1.1
* ============================================================================
*
* Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, 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. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by the Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "FOP" and "Apache Software Foundation" must not be used to
* endorse or promote products derived from this software without prior
* written permission. For written permission, please contact
* apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache", nor may
* "Apache" appear in their name, without prior written permission of the
* Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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
* APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
* DING, 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.
* ============================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of the Apache Software Foundation and was originally created by
* James Tauber <jtauber@jtauber.com>. For more information on the Apache
* Software Foundation, please see <http://www.apache.org/>.
*/
package org.apache.fop.pdf;
import org.apache.fop.fonts.FontType;
/**
* Class representing a /Font object.
* <p>
* A more complete object expressing the base font name and encoding of a
* font along with an internal name for the font used within
* streams of content.
* <p>
* Fonts are specified on page 198 and onwards of the PDF 1.3 spec.
*/
public class PDFFont extends PDFObject {
/**
* the internal name for the font (eg "F1")
*/
protected String fontname;
/**
* the font's subtype
* (as defined by the constants FontType: TYPE0, TYPE1, MMTYPE1, TYPE3, TRUETYPE)
*/
protected FontType subtype;
/**
* the base font name (eg "Helvetica")
*/
protected String basefont;
/**
* the character encoding scheme used by the font.
* It can be a String for standard encodings, or
* a PDFEncoding for a more complex scheme, or
* a PDFStream containing a CMap in a Type0 font.
* If <code>null</code> then not written out in the PDF.
*/
protected Object encoding;
/**
* the Unicode mapping mechanism
*/
// protected PDFToUnicode mapping;
/**
* create the /Font object
*
* @param number the object's number
* @param fontname the internal name for the font
* @param subtype the font's subtype
* @param basefont the base font name
* @param encoding the character encoding schema used by the font
*/
public PDFFont(int number, String fontname, FontType subtype,
String basefont,
Object encoding /* , PDFToUnicode mapping */) {
/* generic creation of PDF object */
super(number);
/* set fields using paramaters */
this.fontname = fontname;
this.subtype = subtype;
this.basefont = basefont;
this.encoding = encoding;
// this.mapping = mapping;
}
/**
* factory method with the basic parameters
*
* @param number the object's number
* @param fontname the internal name for the font
* @param subtype the font's subtype
* @param basefont the base font name
* @param encoding the character encoding schema used by the font
* @return the generated PDFFont object
*/
public static PDFFont createFont(int number, String fontname,
FontType subtype, String basefont,
Object encoding) {
if (subtype == FontType.TYPE0) {
return new PDFFontType0(number, fontname, basefont,
encoding);
} else if ((subtype == FontType.TYPE1)
|| (subtype == FontType.MMTYPE1)) {
return new PDFFontType1(number, fontname, basefont,
encoding);
} else if (subtype == FontType.TYPE3) {
//return new PDFFontType3(number, fontname, basefont, encoding);
return null; //NYI
} else if (subtype == FontType.TRUETYPE) {
return new PDFFontTrueType(number, fontname, basefont,
encoding);
} else {
return null; // should not happend
}
}
/**
* factory method with the extended parameters
* for Type1, MMType1 and TrueType
*
* @param number the object's number
* @param fontname the internal name for the font
* @param subtype the font's subtype
* @param basefont the base font name
* @param encoding the character encoding schema used by the font
* @param firstChar the first character code in the font
* @param lastChar the last character code in the font
* @param widths an array of size (lastChar - firstChar +1)
* @param descriptor the descriptor for other font's metrics
* @return the generated PDFFont object
*/
public static PDFFont createFont(int number, String fontname,
FontType subtype, String basefont,
Object encoding, int firstChar,
int lastChar, PDFArray widths,
PDFFontDescriptor descriptor) {
PDFFontNonBase14 font;
if (subtype == FontType.TYPE0) {
font = new PDFFontType0(number, fontname, basefont,
encoding);
font.setDescriptor(descriptor);
return font;
} else if ((subtype == FontType.TYPE1)
|| (subtype == FontType.MMTYPE1)) {
font = new PDFFontType1(number, fontname, basefont,
encoding);
font.setWidthMetrics(firstChar, lastChar, widths);
font.setDescriptor(descriptor);
return font;
} else if (subtype == FontType.TYPE3) {
return null; //NYI, should not happend
} else if (subtype == FontType.TRUETYPE) {
font = new PDFFontTrueType(number, fontname, basefont,
encoding);
font.setWidthMetrics(firstChar, lastChar, widths);
font.setDescriptor(descriptor);
return font;
} else {
return null; // should not happend
}
}
/**
* get the internal name used for this font
* @return the internal name
*/
public String getName() {
return this.fontname;
}
/**
* Returns the PDF name for a certain font type.
* @param fontType font type
* @return String corresponding PDF name
*/
protected String getPDFNameForFontType(FontType fontType) {
if (fontType == FontType.TYPE0) {
return fontType.getName();
} else if (fontType == FontType.TYPE1) {
return fontType.getName();
} else if (fontType == FontType.MMTYPE1) {
return fontType.getName();
} else if (fontType == FontType.TYPE3) {
return fontType.getName();
} else if (fontType == FontType.TRUETYPE) {
return fontType.getName();
} else {
throw new IllegalArgumentException("Unsupported font type: " + fontType.getName());
}
}
/**
* Produce the PDF representation for the object
*
* @return the PDF
*/
public byte[] toPDF() {
StringBuffer p = new StringBuffer();
p.append(this.number + " " + this.generation
+ " obj\n<< /Type /Font\n/Subtype /"
+ getPDFNameForFontType(this.subtype) + "\n/Name /" + this.fontname
+ "\n/BaseFont /" + this.basefont);
if (encoding != null) {
p.append("\n/Encoding ");
if (encoding instanceof PDFEncoding) {
p.append(((PDFEncoding)this.encoding).referencePDF());
} else if (encoding instanceof PDFStream) {
p.append(((PDFStream)this.encoding).referencePDF());
} else {
p.append("/").append((String)encoding);
}
}
fillInPDF(p);
p.append(" >>\nendobj\n");
return p.toString().getBytes();
}
/**
* This method is called to receive the specifics for the font's subtype.
* <p>
* The given buffer already contains the fields common to all font types.
*
* @param target the buffer to be completed with the type specific fields
*/
protected void fillInPDF(StringBuffer target) {
//nop
}
}
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