pdftops/SplashFontEngine.h

   1 //========================================================================
   2 //
   3 // SplashFontEngine.h
   4 //
   5 //========================================================================
   6
   7 #ifndef SPLASHFONTENGINE_H
   8 #define SPLASHFONTENGINE_H
   9
  10 #include <config.h>
  11
  12 #ifdef USE_GCC_PRAGMAS
  13 #pragma interface
  14 #endif
  15
  16 #include "gtypes.h"
  17
  18 class SplashT1FontEngine;
  19 class SplashFTFontEngine;
  20 class SplashDTFontEngine;
  21 class SplashDT4FontEngine;
  22 class SplashFontFile;
  23 class SplashFontFileID;
  24 class SplashFont;
  25
  26 //------------------------------------------------------------------------
  27
  28 #define splashFontCacheSize 16
  29
  30 //------------------------------------------------------------------------
  31 // SplashFontEngine
  32 //------------------------------------------------------------------------
  33
  34 class SplashFontEngine {
  35 public:
  36
  37   // Create a font engine.
  38   SplashFontEngine(
  39 #if HAVE_T1LIB_H
  40                    GBool enableT1lib,
  41 #endif
  42 #if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
  43                    GBool enableFreeType,
  44 #endif
  45                    GBool aa);
  46
  47   ~SplashFontEngine();
  48
  49   // Get a font file from the cache.  Returns NULL if there is no
  50   // matching entry in the cache.
  51   SplashFontFile *getFontFile(SplashFontFileID *id);
  52
  53   // Load fonts - these create new SplashFontFile objects.
  54   SplashFontFile *loadType1Font(SplashFontFileID *idA, char *fileName,
  55                                 GBool deleteFile, char **enc);
  56   SplashFontFile *loadType1CFont(SplashFontFileID *idA, char *fileName,
  57                                  GBool deleteFile, char **enc);
  58   SplashFontFile *loadCIDFont(SplashFontFileID *idA, char *fileName,
  59                               GBool deleteFile);
  60   SplashFontFile *loadTrueTypeFont(SplashFontFileID *idA, char *fileName,
  61                                    GBool deleteFile,
  62                                    Gushort *codeToGID, int codeToGIDLen);
  63
  64   // Get a font - this does a cache lookup first, and if not found,
  65   // creates a new SplashFont object and adds it to the cache.  The
  66   // matrix:
  67   //    [ mat[0] mat[1] ]
  68   //    [ mat[2] mat[3] ]
  69   // specifies the font transform in PostScript style:
  70   //    [x' y'] = [x y] * mat
  71   // Note that the Splash y axis points downward.
  72   SplashFont *getFont(SplashFontFile *fontFile, SplashCoord *mat);
  73
  74 private:
  75
  76   SplashFont *fontCache[splashFontCacheSize];
  77
  78 #if HAVE_T1LIB_H
  79   SplashT1FontEngine *t1Engine;
  80 #endif
  81 #if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
  82   SplashFTFontEngine *ftEngine;
  83 #endif
  84 };
  85
  86 #endif