pdftops/SplashT1FontEngine.cxx

   1 //========================================================================
   2 //
   3 // SplashT1FontEngine.cc
   4 //
   5 //========================================================================
   6
   7 #include <config.h>
   8
   9 #if HAVE_T1LIB_H
  10
  11 #ifdef USE_GCC_PRAGMAS
  12 #pragma implementation
  13 #endif
  14
  15 #include <stdlib.h>
  16 #include <stdio.h>
  17 #ifndef WIN32
  18 #  include <unistd.h>
  19 #endif
  20 #include <t1lib.h>
  21 #include "GString.h"
  22 #include "gfile.h"
  23 #include "FoFiType1C.h"
  24 #include "SplashT1FontFile.h"
  25 #include "SplashT1FontEngine.h"
  26
  27 #ifdef VMS
  28 #if (__VMS_VER < 70000000)
  29 extern "C" int unlink(char *filename);
  30 #endif
  31 #endif
  32
  33 //------------------------------------------------------------------------
  34
  35 int SplashT1FontEngine::t1libInitCount = 0;
  36
  37 //------------------------------------------------------------------------
  38
  39 static void fileWrite(void *stream, char *data, int len) {
  40   fwrite(data, 1, len, (FILE *)stream);
  41 }
  42
  43 //------------------------------------------------------------------------
  44 // SplashT1FontEngine
  45 //------------------------------------------------------------------------
  46
  47 SplashT1FontEngine::SplashT1FontEngine(GBool aaA) {
  48   aa = aaA;
  49 }
  50
  51 SplashT1FontEngine *SplashT1FontEngine::init(GBool aaA) {
  52   // grayVals[i] = round(i * 255 / 16)
  53   static unsigned long grayVals[17] = {
  54     0, 16, 32, 48, 64, 80, 96, 112, 128, 143, 159, 175, 191, 207, 223, 239, 255
  55   };
  56
  57   //~ for multithreading: need a mutex here
  58   if (t1libInitCount == 0) {
  59     T1_SetBitmapPad(8);
  60     if (!T1_InitLib(NO_LOGFILE | IGNORE_CONFIGFILE | IGNORE_FONTDATABASE |
  61                     T1_NO_AFM)) {
  62       return NULL;
  63     }
  64     if (aaA) {
  65       T1_AASetBitsPerPixel(8);
  66       T1_AASetLevel(T1_AA_HIGH);
  67       T1_AAHSetGrayValues(grayVals);
  68     } else {
  69       T1_AANSetGrayValues(0, 1);
  70     }
  71   }
  72   ++t1libInitCount;
  73
  74   return new SplashT1FontEngine(aaA);
  75 }
  76
  77 SplashT1FontEngine::~SplashT1FontEngine() {
  78   //~ for multithreading: need a mutex here
  79   if (--t1libInitCount == 0) {
  80     T1_CloseLib();
  81   }
  82 }
  83
  84 SplashFontFile *SplashT1FontEngine::loadType1Font(SplashFontFileID *idA,
  85                                                   char *fileName,
  86                                                   GBool deleteFile,
  87                                                   char **enc) {
  88   return SplashT1FontFile::loadType1Font(this, idA, fileName, deleteFile, enc);
  89 }
  90
  91 SplashFontFile *SplashT1FontEngine::loadType1CFont(SplashFontFileID *idA,
  92                                                    char *fileName,
  93                                                    GBool deleteFile,
  94                                                    char **enc) {
  95   FoFiType1C *ff;
  96   GString *tmpFileName;
  97   FILE *tmpFile;
  98   SplashFontFile *ret;
  99
 100   if (!(ff = FoFiType1C::load(fileName))) {
 101     return NULL;
 102   }
 103   tmpFileName = NULL;
 104   if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) {
 105     delete ff;
 106     return NULL;
 107   }
 108   ff->convertToType1(NULL, gTrue, &fileWrite, tmpFile);
 109   delete ff;
 110   fclose(tmpFile);
 111   ret = SplashT1FontFile::loadType1Font(this, idA, tmpFileName->getCString(),
 112                                         gTrue, enc);
 113   if (ret) {
 114     if (deleteFile) {
 115       unlink(fileName);
 116     }
 117   } else {
 118     unlink(tmpFileName->getCString());
 119   }
 120   delete tmpFileName;
 121   return ret;
 122 }
 123
 124 #endif // HAVE_T1LIB_H