pdftops/FontFile.h

   1 //========================================================================
   2 //
   3 // FontFile.h
   4 //
   5 // Copyright 1999 Derek B. Noonburg
   6 //
   7 //========================================================================
   8
   9 #ifndef FONTFILE_H
  10 #define FONTFILE_H
  11
  12 #ifdef __GNUC__
  13 #pragma interface
  14 #endif
  15
  16 #include <stdio.h>
  17 #include "gtypes.h"
  18 #include "GString.h"
  19 #include "FontEncoding.h"
  20
  21 //------------------------------------------------------------------------
  22 // FontFile
  23 //------------------------------------------------------------------------
  24
  25 class FontFile {
  26 public:
  27
  28   FontFile();
  29   virtual ~FontFile();
  30
  31   // Returns the font name, as specified internally by the font file.
  32   // Returns NULL if no name is available.
  33   virtual const char *getName() = 0;
  34
  35   // Returns the custom font encoding, or NULL if the encoding is
  36   // not available.  If <taken> is set, the caller of this function
  37   // will be responsible for freeing the encoding object.
  38   virtual FontEncoding *getEncoding(GBool taken) = 0;
  39 };
  40
  41 //------------------------------------------------------------------------
  42 // Type1FontFile
  43 //------------------------------------------------------------------------
  44
  45 class Type1FontFile: public FontFile {
  46 public:
  47
  48   Type1FontFile(const char *file, int len);
  49   virtual ~Type1FontFile();
  50   virtual const char *getName() { return name; }
  51   virtual FontEncoding *getEncoding(GBool taken);
  52
  53 private:
  54
  55   const char *name;
  56   FontEncoding *encoding;
  57   GBool freeEnc;
  58 };
  59
  60 //------------------------------------------------------------------------
  61 // Type1CFontFile
  62 //------------------------------------------------------------------------
  63
  64 class Type1CFontFile: public FontFile {
  65 public:
  66
  67   Type1CFontFile(const char *file, int len);
  68   virtual ~Type1CFontFile();
  69   virtual const char *getName() { return name; }
  70   virtual FontEncoding *getEncoding(GBool taken);
  71
  72 private:
  73
  74   const char *name;
  75   FontEncoding *encoding;
  76   GBool freeEnc;
  77 };
  78
  79 //------------------------------------------------------------------------
  80 // Type1CFontConverter
  81 //------------------------------------------------------------------------
  82
  83 class Type1CFontConverter {
  84 public:
  85
  86   Type1CFontConverter(const char *file, int len, FILE *out);
  87   ~Type1CFontConverter();
  88   void convert();
  89
  90 private:
  91
  92   void eexecWrite(const char *s);
  93   void cvtGlyph(const char *name, Guchar *s, int n);
  94   void cvtGlyphWidth(GBool useOp);
  95   void eexecDumpNum(double x, GBool fp);
  96   void eexecDumpOp1(int op);
  97   void eexecDumpOp2(int op);
  98   void eexecWriteCharstring(Guchar *s, int n);
  99   void getDeltaInt(char *buf, const char *name, double *op, int n);
 100   void getDeltaReal(char *buf, const char *name, double *op, int n);
 101
 102   const char *file;
 103   int len;
 104   FILE *out;
 105   double op[48];                // operands
 106   GBool fp[48];                 // true if operand is fixed point
 107   int nOps;                     // number of operands
 108   double defaultWidthX;         // default glyph width
 109   double nominalWidthX;         // nominal glyph width
 110   GBool defaultWidthXFP;        // true if defaultWidthX is fixed point
 111   GBool nominalWidthXFP;        // true if nominalWidthX is fixed point
 112   Gushort r1;                   // eexec encryption key
 113   GString *charBuf;             // charstring output buffer
 114   int line;                     // number of eexec chars on current line
 115 };
 116
 117 #endif