Initial Commit
This commit is contained in:
278
iTechSharp/iTextSharp/text/pdf/FontDetails.cs
Normal file
278
iTechSharp/iTextSharp/text/pdf/FontDetails.cs
Normal file
@@ -0,0 +1,278 @@
|
||||
using System;
|
||||
using System.Collections;
|
||||
using System.util;
|
||||
using iTextSharp.text;
|
||||
|
||||
/*
|
||||
* $Id: FontDetails.cs,v 1.7 2008/05/13 11:25:17 psoares33 Exp $
|
||||
*
|
||||
*
|
||||
* Copyright 2001, 2002 by Paulo Soares.
|
||||
*
|
||||
* The contents of this file are subject to the Mozilla Public License Version 1.1
|
||||
* (the "License"); you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing rights and limitations under the License.
|
||||
*
|
||||
* The Original Code is 'iText, a free JAVA-PDF library'.
|
||||
*
|
||||
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
|
||||
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
|
||||
* All Rights Reserved.
|
||||
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
|
||||
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s): all the names of the contributors are added in the source code
|
||||
* where applicable.
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of the
|
||||
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
|
||||
* provisions of LGPL are applicable instead of those above. If you wish to
|
||||
* allow use of your version of this file only under the terms of the LGPL
|
||||
* License and not to allow others to use your version of this file under
|
||||
* the MPL, indicate your decision by deleting the provisions above and
|
||||
* replace them with the notice and other provisions required by the LGPL.
|
||||
* If you do not delete the provisions above, a recipient may use your version
|
||||
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the MPL as stated above or under the terms of the GNU
|
||||
* Library General Public License as published by the Free Software Foundation;
|
||||
* either version 2 of the License, or any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||||
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
|
||||
* details.
|
||||
*
|
||||
* If you didn't download this code from the following link, you should check if
|
||||
* you aren't using an obsolete version:
|
||||
* http://www.lowagie.com/iText/
|
||||
*/
|
||||
|
||||
namespace iTextSharp.text.pdf {
|
||||
|
||||
/** Each font in the document will have an instance of this class
|
||||
* where the characters used will be represented.
|
||||
*
|
||||
* @author Paulo Soares (psoares@consiste.pt)
|
||||
*/
|
||||
internal class FontDetails {
|
||||
|
||||
/** The indirect reference to this font
|
||||
*/
|
||||
PdfIndirectReference indirectReference;
|
||||
/** The font name that appears in the document body stream
|
||||
*/
|
||||
PdfName fontName;
|
||||
/** The font
|
||||
*/
|
||||
BaseFont baseFont;
|
||||
/** The font if its an instance of <CODE>TrueTypeFontUnicode</CODE>
|
||||
*/
|
||||
TrueTypeFontUnicode ttu;
|
||||
|
||||
CJKFont cjkFont;
|
||||
/** The array used with single byte encodings
|
||||
*/
|
||||
byte[] shortTag;
|
||||
/** The map used with double byte encodings. The key is Int(glyph) and the
|
||||
* value is int[]{glyph, width, Unicode code}
|
||||
*/
|
||||
Hashtable longTag;
|
||||
|
||||
IntHashtable cjkTag;
|
||||
/** The font type
|
||||
*/
|
||||
int fontType;
|
||||
/** <CODE>true</CODE> if the font is symbolic
|
||||
*/
|
||||
bool symbolic;
|
||||
/** Indicates if all the glyphs and widths for that particular
|
||||
* encoding should be included in the document.
|
||||
*/
|
||||
protected bool subset = true;
|
||||
/** Each font used in a document has an instance of this class.
|
||||
* This class stores the characters used in the document and other
|
||||
* specifics unique to the current working document.
|
||||
* @param fontName the font name
|
||||
* @param indirectReference the indirect reference to the font
|
||||
* @param baseFont the <CODE>BaseFont</CODE>
|
||||
*/
|
||||
internal FontDetails(PdfName fontName, PdfIndirectReference indirectReference, BaseFont baseFont) {
|
||||
this.fontName = fontName;
|
||||
this.indirectReference = indirectReference;
|
||||
this.baseFont = baseFont;
|
||||
fontType = baseFont.FontType;
|
||||
switch (fontType) {
|
||||
case BaseFont.FONT_TYPE_T1:
|
||||
case BaseFont.FONT_TYPE_TT:
|
||||
shortTag = new byte[256];
|
||||
break;
|
||||
case BaseFont.FONT_TYPE_CJK:
|
||||
cjkTag = new IntHashtable();
|
||||
cjkFont = (CJKFont)baseFont;
|
||||
break;
|
||||
case BaseFont.FONT_TYPE_TTUNI:
|
||||
longTag = new Hashtable();
|
||||
ttu = (TrueTypeFontUnicode)baseFont;
|
||||
symbolic = baseFont.IsFontSpecific();
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/** Gets the indirect reference to this font.
|
||||
* @return the indirect reference to this font
|
||||
*/
|
||||
internal PdfIndirectReference IndirectReference {
|
||||
get {
|
||||
return indirectReference;
|
||||
}
|
||||
}
|
||||
|
||||
/** Gets the font name as it appears in the document body.
|
||||
* @return the font name
|
||||
*/
|
||||
internal PdfName FontName {
|
||||
get {
|
||||
return fontName;
|
||||
}
|
||||
}
|
||||
|
||||
/** Gets the <CODE>BaseFont</CODE> of this font.
|
||||
* @return the <CODE>BaseFont</CODE> of this font
|
||||
*/
|
||||
internal BaseFont BaseFont {
|
||||
get {
|
||||
return baseFont;
|
||||
}
|
||||
}
|
||||
|
||||
/** Converts the text into bytes to be placed in the document.
|
||||
* The conversion is done according to the font and the encoding and the characters
|
||||
* used are stored.
|
||||
* @param text the text to convert
|
||||
* @return the conversion
|
||||
*/
|
||||
internal byte[] ConvertToBytes(string text) {
|
||||
byte[] b = null;
|
||||
switch (fontType) {
|
||||
case BaseFont.FONT_TYPE_T3:
|
||||
return baseFont.ConvertToBytes(text);
|
||||
case BaseFont.FONT_TYPE_T1:
|
||||
case BaseFont.FONT_TYPE_TT: {
|
||||
b = baseFont.ConvertToBytes(text);
|
||||
int len = b.Length;
|
||||
for (int k = 0; k < len; ++k)
|
||||
shortTag[((int)b[k]) & 0xff] = 1;
|
||||
break;
|
||||
}
|
||||
case BaseFont.FONT_TYPE_CJK: {
|
||||
int len = text.Length;
|
||||
for (int k = 0; k < len; ++k)
|
||||
cjkTag[cjkFont.GetCidCode(text[k])] = 0;
|
||||
b = baseFont.ConvertToBytes(text);
|
||||
break;
|
||||
}
|
||||
case BaseFont.FONT_TYPE_DOCUMENT: {
|
||||
b = baseFont.ConvertToBytes(text);
|
||||
break;
|
||||
}
|
||||
case BaseFont.FONT_TYPE_TTUNI: {
|
||||
int len = text.Length;
|
||||
int[] metrics = null;
|
||||
char[] glyph = new char[len];
|
||||
int i = 0;
|
||||
if (symbolic) {
|
||||
b = PdfEncodings.ConvertToBytes(text, "symboltt");
|
||||
len = b.Length;
|
||||
for (int k = 0; k < len; ++k) {
|
||||
metrics = ttu.GetMetricsTT(b[k] & 0xff);
|
||||
if (metrics == null)
|
||||
continue;
|
||||
longTag[metrics[0]] = new int[]{metrics[0], metrics[1], ttu.GetUnicodeDifferences(b[k] & 0xff)};
|
||||
glyph[i++] = (char)metrics[0];
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (int k = 0; k < len; ++k) {
|
||||
int val;
|
||||
if (Utilities.IsSurrogatePair(text, k)) {
|
||||
val = Utilities.ConvertToUtf32(text, k);
|
||||
k++;
|
||||
}
|
||||
else {
|
||||
val = (int)text[k];
|
||||
}
|
||||
metrics = ttu.GetMetricsTT(val);
|
||||
if (metrics == null)
|
||||
continue;
|
||||
int m0 = metrics[0];
|
||||
int gl = m0;
|
||||
if (!longTag.ContainsKey(gl))
|
||||
longTag[gl] = new int[]{m0, metrics[1], val};
|
||||
glyph[i++] = (char)m0;
|
||||
}
|
||||
}
|
||||
string s = new String(glyph, 0, i);
|
||||
b = PdfEncodings.ConvertToBytes(s, CJKFont.CJK_ENCODING);
|
||||
break;
|
||||
}
|
||||
}
|
||||
return b;
|
||||
}
|
||||
|
||||
/** Writes the font definition to the document.
|
||||
* @param writer the <CODE>PdfWriter</CODE> of this document
|
||||
*/
|
||||
internal void WriteFont(PdfWriter writer) {
|
||||
switch (fontType) {
|
||||
case BaseFont.FONT_TYPE_T3:
|
||||
baseFont.WriteFont(writer, indirectReference, null);
|
||||
break;
|
||||
case BaseFont.FONT_TYPE_T1:
|
||||
case BaseFont.FONT_TYPE_TT: {
|
||||
int firstChar;
|
||||
int lastChar;
|
||||
for (firstChar = 0; firstChar < 256; ++firstChar) {
|
||||
if (shortTag[firstChar] != 0)
|
||||
break;
|
||||
}
|
||||
for (lastChar = 255; lastChar >= firstChar; --lastChar) {
|
||||
if (shortTag[lastChar] != 0)
|
||||
break;
|
||||
}
|
||||
if (firstChar > 255) {
|
||||
firstChar = 255;
|
||||
lastChar = 255;
|
||||
}
|
||||
baseFont.WriteFont(writer, indirectReference, new Object[]{firstChar, lastChar, shortTag, subset});
|
||||
break;
|
||||
}
|
||||
case BaseFont.FONT_TYPE_CJK:
|
||||
baseFont.WriteFont(writer, indirectReference, new Object[]{cjkTag});
|
||||
break;
|
||||
case BaseFont.FONT_TYPE_TTUNI:
|
||||
baseFont.WriteFont(writer, indirectReference, new Object[]{longTag, subset});
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/** Indicates if all the glyphs and widths for that particular
|
||||
* encoding should be included in the document. Set to <CODE>false</CODE>
|
||||
* to include all.
|
||||
* @param subset new value of property subset
|
||||
*/
|
||||
public bool Subset {
|
||||
set {
|
||||
this.subset = value;
|
||||
}
|
||||
get {
|
||||
return subset;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user