source/libs/poppler/poppler-src/splash/SplashFontEngine.h

   1 //========================================================================
   2 //
   3 // SplashFontEngine.h
   4 //
   5 //========================================================================
   6
   7 //========================================================================
   8 //
   9 // Modified under the Poppler project - http://poppler.freedesktop.org
  10 //
  11 // All changes made under the Poppler project to this file are licensed
  12 // under GPL version 2 or later
  13 //
  14 // Copyright (C) 2006 Takashi Iwai <tiwai@suse.de>
  15 // Copyright (C) 2009 Petr Gajdos <pgajdos@novell.com>
  16 // Copyright (C) 2009, 2011 Albert Astals Cid <aacid@kde.org>
  17 // Copyright (C) 2011 Andreas Hartmetz <ahartmetz@gmail.com>
  18 // Copyright (C) 2013 Thomas Freitag <Thomas.Freitag@alfa.de>
  19 //
  20 // To see a description of the changes please see the Changelog file that
  21 // came with your tarball or type make ChangeLog if you are building from git
  22 //
  23 //========================================================================
  24
  25 #ifndef SPLASHFONTENGINE_H
  26 #define SPLASHFONTENGINE_H
  27
  28 #ifdef USE_GCC_PRAGMAS
  29 #pragma interface
  30 #endif
  31
  32 #include "goo/gtypes.h"
  33 #include "SplashTypes.h"
  34
  35 class SplashT1FontEngine;
  36 class SplashFTFontEngine;
  37 class SplashDTFontEngine;
  38 class SplashDT4FontEngine;
  39 class SplashFontFile;
  40 class SplashFontFileID;
  41 class SplashFont;
  42 class SplashFontSrc;
  43
  44 //------------------------------------------------------------------------
  45
  46 #define splashFontCacheSize 16
  47
  48 //------------------------------------------------------------------------
  49 // SplashFontEngine
  50 //------------------------------------------------------------------------
  51
  52 class SplashFontEngine {
  53 public:
  54
  55   // Create a font engine.
  56   SplashFontEngine(
  57 #if HAVE_T1LIB_H
  58                    GBool enableT1lib,
  59 #endif
  60 #if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
  61                    GBool enableFreeType,
  62                    GBool enableFreeTypeHinting,
  63                    GBool enableSlightHinting,
  64 #endif
  65                    GBool aa);
  66
  67   ~SplashFontEngine();
  68
  69   // Get a font file from the cache.  Returns NULL if there is no
  70   // matching entry in the cache.
  71   SplashFontFile *getFontFile(SplashFontFileID *id);
  72
  73   // Load fonts - these create new SplashFontFile objects.
  74   SplashFontFile *loadType1Font(SplashFontFileID *idA, SplashFontSrc *src, const char **enc);
  75   SplashFontFile *loadType1CFont(SplashFontFileID *idA, SplashFontSrc *src, const char **enc);
  76   SplashFontFile *loadOpenTypeT1CFont(SplashFontFileID *idA, SplashFontSrc *src, const char **enc);
  77   SplashFontFile *loadCIDFont(SplashFontFileID *idA, SplashFontSrc *src);
  78   SplashFontFile *loadOpenTypeCFFFont(SplashFontFileID *idA, SplashFontSrc *src,
  79                                       int *codeToGID, int codeToGIDLen);
  80   SplashFontFile *loadTrueTypeFont(SplashFontFileID *idA, SplashFontSrc *src,
  81                                    int *codeToGID, int codeToGIDLen, int faceIndex = 0);
  82
  83   // Get a font - this does a cache lookup first, and if not found,
  84   // creates a new SplashFont object and adds it to the cache.  The
  85   // matrix, mat = textMat * ctm:
  86   //    [ mat[0] mat[1] ]
  87   //    [ mat[2] mat[3] ]
  88   // specifies the font transform in PostScript style:
  89   //    [x' y'] = [x y] * mat
  90   // Note that the Splash y axis points downward.
  91   SplashFont *getFont(SplashFontFile *fontFile,
  92                       SplashCoord *textMat, SplashCoord *ctm);
  93 #if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
  94   GBool getAA();
  95   void setAA(GBool aa);
  96 #endif
  97
  98 private:
  99
 100   SplashFont *fontCache[splashFontCacheSize];
 101
 102 #if HAVE_T1LIB_H
 103   SplashT1FontEngine *t1Engine;
 104 #endif
 105 #if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
 106   SplashFTFontEngine *ftEngine;
 107 #endif
 108 };
 109
 110 #endif