1 files changed, 286 insertions, 0 deletions

diff --git a/noncore/unsupported/qpdf/xpdf/GfxFont.h b/noncore/unsupported/qpdf/xpdf/GfxFont.h
new file mode 100644
index 0000000..b1aa952
--- a/dev/null
+++ b/noncore/unsupported/qpdf/xpdf/GfxFont.h
@@ -0,0 +1,286 @@
+//========================================================================
+//
+// GfxFont.h
+//
+// Copyright 1996-2001 Derek B. Noonburg
+//
+//========================================================================
+
+#ifndef GFXFONT_H
+#define GFXFONT_H
+
+#ifdef __GNUC__
+#pragma interface
+#endif
+
+#include "gtypes.h"
+#include "GString.h"
+#include "Object.h"
+#include "CharTypes.h"
+
+class Dict;
+class CMap;
+class CharCodeToUnicode;
+struct GfxFontCIDWidths;
+
+//------------------------------------------------------------------------
+// GfxFontType
+//------------------------------------------------------------------------
+
+enum GfxFontType {
+  //----- Gfx8BitFont
+  fontUnknownType,
+  fontType1,
+  fontType1C,
+  fontType3,
+  fontTrueType,
+  //----- GfxCIDFont
+  fontCIDType0,
+  fontCIDType0C,
+  fontCIDType2
+};
+
+//------------------------------------------------------------------------
+// GfxFontCIDWidths
+//------------------------------------------------------------------------
+
+struct GfxFontCIDWidthExcep {
+          CID first;            // this record applies to
+          CID last;             //   CIDs <first>..<last>
+          fouble width;                 // char width
+};
+
+struct GfxFontCIDWidthExcepV {
+          CID first;            // this record applies to
+          CID last;             //   CIDs <first>..<last>
+          fouble height;        // char height
+          fouble vx, vy;        // origin position
+};
+
+struct GfxFontCIDWidths {
+          fouble defWidth;      // default char width
+          fouble defHeight;     // default char height
+          fouble defVY;                 // default origin position
+          GfxFontCIDWidthExcep *exceps;// exceptions
+          int nExceps;          // number of valid entries in exceps
+          GfxFontCIDWidthExcepV *// exceptions for vertical font
+    excepsV;
+          int nExcepsV;                 // number of valid entries in excepsV
+};
+
+//------------------------------------------------------------------------
+// GfxFont
+//------------------------------------------------------------------------
+
+#define fontFixedWidth (1 << 0)
+#define fontSerif      (1 << 1)
+#define fontSymbolic   (1 << 2)
+#define fontItalic     (1 << 6)
+#define fontBold       (1 << 18)
+
+class GfxFont {
+public:
+
+  // Build a GfxFont object.
+  static GfxFont *makeFont(XRef *xref, char *tagA, Ref idA, Dict *fontDict);
+
+  GfxFont(char *tagA, Ref idA, GString *nameA);
+
+  virtual ~GfxFont();
+
+  GBool isOk() { return ok; }
+
+  // Get font tag.
+  GString *getTag() { return tag; }
+
+  // Get font dictionary ID.
+  Ref *getID() { return &id; }
+
+  // Does this font match the tag?
+  GBool matches(char *tagA) { return !tag->cmp(tagA); }
+
+  // Get base font name.
+  GString *getName() { return name; }
+
+  // Get font type.
+  GfxFontType getType() { return type; }
+  virtual GBool isCIDFont() { return gFalse; }
+
+  // Get embedded font ID, i.e., a ref for the font file stream.
+  // Returns false if there is no embedded font.
+  GBool getEmbeddedFontID(Ref *embID)
+    { *embID = embFontID; return embFontID.num >= 0; }
+
+  // Get the PostScript font name for the embedded font.  Returns
+  // NULL if there is no embedded font.
+  char *getEmbeddedFontName()
+    { return embFontName ? embFontName->getCString() : (char *)NULL; }
+
+  // Get the name of the external font file.  Returns NULL if there
+  // is no external font file.
+  GString *getExtFontFile() { return extFontFile; }
+
+  // Get font descriptor flags.
+  GBool isFixedWidth() { return flags & fontFixedWidth; }
+  GBool isSerif() { return flags & fontSerif; }
+  GBool isSymbolic() { return flags & fontSymbolic; }
+  GBool isItalic() { return flags & fontItalic; }
+  GBool isBold() { return flags & fontBold; }
+
+  // Return the font matrix.
+  fouble *getFontMatrix() { return fontMat; }
+
+  // Return the font bounding box.
+  fouble *getFontBBox() { return fontBBox; }
+
+  // Return the ascent and descent values.
+  fouble getAscent() { return ascent; }
+  fouble getDescent() { return descent; }
+
+  // Read an external or embedded font file into a buffer.
+  char *readExtFontFile(int *len);
+  char *readEmbFontFile(XRef *xref, int *len);
+
+  // Get the next char from a string <s> of <len> bytes, returning the
+  // char <code>, its Unicode mapping <u>, its displacement vector
+  // (<dx>, <dy>), and its origin offset vector (<ox>, <oy>).  <uSize>
+  // is the number of entries available in <u>, and <uLen> is set to
+  // the number actually used.  Returns the number of bytes used by
+  // the char code.
+  virtual int getNextChar(char *s, int len, CharCode *code,
+                          Unicode *u, int uSize, int *uLen,
+                          fouble *dx, fouble *dy, fouble *ox, fouble *oy) = 0;
+
+protected:
+
+  void readFontDescriptor(XRef *xref, Dict *fontDict);
+  CharCodeToUnicode *readToUnicodeCMap(Dict *fontDict, int nBits);
+  void GfxFont::findExtFontFile();
+
+          GString *tag;                 // PDF font tag
+          Ref id;               // reference (used as unique ID)
+          GString *name;        // font name
+          GfxFontType type;     // type of font
+          int flags;            // font descriptor flags
+          GString *embFontName;         // name of embedded font
+          Ref embFontID;        // ref to embedded font file stream
+          GString *extFontFile;         // external font file name
+          fouble fontMat[6];    // font matrix (Type 3 only)
+          fouble fontBBox[4];   // font bounding box
+          fouble missingWidth;  // "default" width
+          fouble ascent;        // max height above baseline
+          fouble descent;       // max depth below baseline
+  GBool ok;
+};
+
+//------------------------------------------------------------------------
+// Gfx8BitFont
+//------------------------------------------------------------------------
+
+class Gfx8BitFont: public GfxFont {
+public:
+
+  Gfx8BitFont(XRef *xref, char *tagA, Ref idA, GString *nameA,
+              GfxFontType typeA, Dict *fontDict);
+
+  virtual ~Gfx8BitFont();
+
+  virtual int getNextChar(char *s, int len, CharCode *code,
+                          Unicode *u, int uSize, int *uLen,
+                          fouble *dx, fouble *dy, fouble *ox, fouble *oy);
+
+  // Return the encoding.
+  char **getEncoding() { return enc; }
+
+  // Return the Unicode map.
+  CharCodeToUnicode *getToUnicode();
+
+  // Return the character name associated with <code>.
+  char *getCharName(int code) { return enc[code]; }
+
+  // Returns true if the PDF font specified an encoding.
+  GBool getHasEncoding() { return hasEncoding; }
+
+  // Get width of a character or string.
+  fouble getWidth(Guchar c) { return widths[c]; }
+
+  // Return the Type 3 CharProc for the character associated with <code>.
+  Object *getCharProc(int code, Object *proc);
+
+private:
+
+          char *enc[256];       // char code --> char name
+          char encFree[256];    // boolean for each char name: if set,
+                                //   the string is malloc'ed
+          CharCodeToUnicode *ctu;// char code --> Unicode
+  GBool hasEncoding;
+          fouble widths[256];   // character widths
+          Object charProcs;     // Type3 CharProcs dictionary
+};
+
+//------------------------------------------------------------------------
+// GfxCIDFont
+//------------------------------------------------------------------------
+
+class GfxCIDFont: public GfxFont {
+public:
+
+  GfxCIDFont(XRef *xref, char *tagA, Ref idA, GString *nameA,
+             Dict *fontDict);
+
+  virtual ~GfxCIDFont();
+
+  virtual GBool isCIDFont() { return gTrue; }
+
+  virtual int getNextChar(char *s, int len, CharCode *code,
+                          Unicode *u, int uSize, int *uLen,
+                          fouble *dx, fouble *dy, fouble *ox, fouble *oy);
+
+  // Return the Unicode map.
+  CharCodeToUnicode *getToUnicode();
+
+  // Get the collection name (<registry>-<ordering>).
+  GString *getCollection();
+
+  // Return the CID-to-GID mapping table.  These should only be called
+  // if type is fontCIDType2.
+  Gushort *getCIDToGID() { return cidToGID; }
+  int getCIDToGIDLen() { return cidToGIDLen; }
+
+private:
+
+          CMap *cMap;           // char code --> CID
+          CharCodeToUnicode *ctu;// CID --> Unicode
+          GfxFontCIDWidths widths;// character widths
+          Gushort *cidToGID;    // CID --> GID mapping (for embedded
+                                //   TrueType fonts)
+  int cidToGIDLen;
+};
+
+//------------------------------------------------------------------------
+// GfxFontDict
+//------------------------------------------------------------------------
+
+class GfxFontDict {
+public:
+
+  // Build the font dictionary, given the PDF font dictionary.
+  GfxFontDict(XRef *xref, Dict *fontDict);
+
+  // Destructor.
+  ~GfxFontDict();
+
+  // Get the specified font.
+  GfxFont *lookup(char *tag);
+
+  // Iterative access.
+  int getNumFonts() { return numFonts; }
+  GfxFont *getFont(int i) { return fonts[i]; }
+
+private:
+
+          GfxFont **fonts;      // list of fonts
+          int numFonts;                 // number of fonts
+};
+
+#endif