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-rw-r--r--splash/SplashFTFontEngine.cc392
1 files changed, 392 insertions, 0 deletions
diff --git a/splash/SplashFTFontEngine.cc b/splash/SplashFTFontEngine.cc
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+++ b/splash/SplashFTFontEngine.cc
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+//========================================================================
+//
+// SplashFTFontEngine.cc
+//
+// Copyright 2003-2013 Glyph & Cog, LLC
+//
+//========================================================================
+
+#include <aconf.h>
+
+#if HAVE_FREETYPE_H
+
+#ifdef USE_GCC_PRAGMAS
+#pragma implementation
+#endif
+
+#include <stdio.h>
+#ifndef _WIN32
+# include <unistd.h>
+#endif
+#include "gmem.h"
+#include "gmempp.h"
+#include "GString.h"
+#include "gfile.h"
+#include "FoFiTrueType.h"
+#include "FoFiType1C.h"
+#include "SplashFTFontFile.h"
+#include "SplashFTFontEngine.h"
+#include FT_MODULE_H
+#ifdef FT_CFF_DRIVER_H
+# include FT_CFF_DRIVER_H
+#endif
+
+#ifdef VMS
+#if (__VMS_VER < 70000000)
+extern "C" int unlink(char *filename);
+#endif
+#endif
+
+//------------------------------------------------------------------------
+
+static void fileWrite(void *stream, const char *data, int len) {
+ fwrite(data, 1, len, (FILE *)stream);
+}
+
+#if LOAD_FONTS_FROM_MEM
+static void gstringWrite(void *stream, const char *data, int len) {
+ ((GString *)stream)->append(data, len);
+}
+#endif
+
+//------------------------------------------------------------------------
+// SplashFTFontEngine
+//------------------------------------------------------------------------
+
+SplashFTFontEngine::SplashFTFontEngine(GBool aaA, Guint flagsA,
+ FT_Library libA) {
+ FT_Int major, minor, patch;
+
+ aa = aaA;
+ flags = flagsA;
+ lib = libA;
+
+ // as of FT 2.1.8, CID fonts are indexed by CID instead of GID
+ FT_Library_Version(lib, &major, &minor, &patch);
+ useCIDs = major > 2 ||
+ (major == 2 && (minor > 1 || (minor == 1 && patch > 7)));
+}
+
+SplashFTFontEngine *SplashFTFontEngine::init(GBool aaA, Guint flagsA) {
+ FT_Library libA;
+
+ if (FT_Init_FreeType(&libA)) {
+ return NULL;
+ }
+ return new SplashFTFontEngine(aaA, flagsA, libA);
+}
+
+SplashFTFontEngine::~SplashFTFontEngine() {
+ FT_Done_FreeType(lib);
+}
+
+SplashFontFile *SplashFTFontEngine::loadType1Font(SplashFontFileID *idA,
+#if LOAD_FONTS_FROM_MEM
+ GString *fontBuf,
+#else
+ char *fileName,
+ GBool deleteFile,
+#endif
+ const char **enc) {
+ return SplashFTFontFile::loadType1Font(this, idA, splashFontType1,
+#if LOAD_FONTS_FROM_MEM
+ fontBuf,
+#else
+ fileName, deleteFile,
+#endif
+ enc);
+}
+
+SplashFontFile *SplashFTFontEngine::loadType1CFont(SplashFontFileID *idA,
+#if LOAD_FONTS_FROM_MEM
+ GString *fontBuf,
+#else
+ char *fileName,
+ GBool deleteFile,
+#endif
+ const char **enc) {
+ return SplashFTFontFile::loadType1Font(this, idA, splashFontType1C,
+#if LOAD_FONTS_FROM_MEM
+ fontBuf,
+#else
+ fileName, deleteFile,
+#endif
+ enc);
+}
+
+SplashFontFile *SplashFTFontEngine::loadOpenTypeT1CFont(SplashFontFileID *idA,
+#if LOAD_FONTS_FROM_MEM
+ GString *fontBuf,
+#else
+ char *fileName,
+ GBool deleteFile,
+#endif
+ const char **enc) {
+ FoFiTrueType *ff;
+#if LOAD_FONTS_FROM_MEM
+ GString *fontBuf2;
+#else
+ GString *tmpFileName;
+ FILE *tmpFile;
+#endif
+ SplashFontFile *ret;
+
+#if LOAD_FONTS_FROM_MEM
+ if (!(ff = FoFiTrueType::make(fontBuf->getCString(), fontBuf->getLength(),
+ 0, gTrue))) {
+#else
+ if (!(ff = FoFiTrueType::load(fileName, 0, gTrue))) {
+#endif
+ return NULL;
+ }
+ if (ff->isHeadlessCFF()) {
+#if LOAD_FONTS_FROM_MEM
+ fontBuf2 = new GString();
+ ff->convertToType1(NULL, enc, gFalse, &gstringWrite, fontBuf2);
+ delete ff;
+ ret = SplashFTFontFile::loadType1Font(this, idA, splashFontType1,
+ fontBuf2, enc);
+ if (ret) {
+ delete fontBuf;
+ } else {
+ delete fontBuf2;
+ }
+#else
+ tmpFileName = NULL;
+ if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) {
+ delete ff;
+ return NULL;
+ }
+ ff->convertToType1(NULL, enc, gFalse, &fileWrite, tmpFile);
+ delete ff;
+ fclose(tmpFile);
+ ret = SplashFTFontFile::loadType1Font(this, idA, splashFontType1,
+ tmpFileName->getCString(),
+ gTrue, enc);
+ if (ret) {
+ if (deleteFile) {
+ unlink(fileName);
+ }
+ } else {
+ unlink(tmpFileName->getCString());
+ }
+ delete tmpFileName;
+#endif
+ } else {
+ delete ff;
+ ret = SplashFTFontFile::loadType1Font(this, idA, splashFontOpenTypeT1C,
+#if LOAD_FONTS_FROM_MEM
+ fontBuf,
+#else
+ fileName, deleteFile,
+#endif
+ enc);
+ }
+ return ret;
+}
+
+SplashFontFile *SplashFTFontEngine::loadCIDFont(SplashFontFileID *idA,
+#if LOAD_FONTS_FROM_MEM
+ GString *fontBuf,
+#else
+ char *fileName,
+ GBool deleteFile,
+#endif
+ int *codeToGID,
+ int codeToGIDLen) {
+ FoFiType1C *ff;
+ int *cidToGIDMap;
+ int nCIDs;
+ SplashFontFile *ret;
+
+ // check for a CFF font
+ if (codeToGID) {
+ cidToGIDMap = NULL;
+ nCIDs = 0;
+ } else if (useCIDs) {
+ cidToGIDMap = NULL;
+ nCIDs = 0;
+#if LOAD_FONTS_FROM_MEM
+ } else if ((ff = FoFiType1C::make(fontBuf->getCString(),
+ fontBuf->getLength()))) {
+#else
+ } else if ((ff = FoFiType1C::load(fileName))) {
+#endif
+ cidToGIDMap = ff->getCIDToGIDMap(&nCIDs);
+ delete ff;
+ } else {
+ cidToGIDMap = NULL;
+ nCIDs = 0;
+ }
+ ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontCID,
+#if LOAD_FONTS_FROM_MEM
+ fontBuf,
+#else
+ fileName, deleteFile,
+#endif
+ codeToGID ? codeToGID : cidToGIDMap,
+ codeToGID ? codeToGIDLen : nCIDs);
+ if (!ret) {
+ gfree(cidToGIDMap);
+ }
+ return ret;
+}
+
+SplashFontFile *SplashFTFontEngine::loadOpenTypeCFFFont(SplashFontFileID *idA,
+#if LOAD_FONTS_FROM_MEM
+ GString *fontBuf,
+#else
+ char *fileName,
+ GBool deleteFile,
+#endif
+ int *codeToGID,
+ int codeToGIDLen) {
+ FoFiTrueType *ff;
+#if LOAD_FONTS_FROM_MEM
+ GString *fontBuf2;
+#else
+ GString *tmpFileName;
+ FILE *tmpFile;
+#endif
+ char *cffStart;
+ int cffLength;
+ int *cidToGIDMap;
+ int nCIDs;
+ SplashFontFile *ret;
+
+#if LOAD_FONTS_FROM_MEM
+ if (!(ff = FoFiTrueType::make(fontBuf->getCString(), fontBuf->getLength(),
+ 0, gTrue))) {
+#else
+ if (!(ff = FoFiTrueType::load(fileName, 0, gTrue))) {
+#endif
+ return NULL;
+ }
+ cidToGIDMap = NULL;
+ nCIDs = 0;
+ if (ff->isHeadlessCFF()) {
+ if (!ff->getCFFBlock(&cffStart, &cffLength)) {
+ return NULL;
+ }
+#if LOAD_FONTS_FROM_MEM
+ fontBuf2 = new GString(cffStart, cffLength);
+ if (!useCIDs) {
+ cidToGIDMap = ff->getCIDToGIDMap(&nCIDs);
+ }
+ ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontOpenTypeCFF,
+ fontBuf2, cidToGIDMap, nCIDs);
+ if (ret) {
+ delete fontBuf;
+ } else {
+ delete fontBuf2;
+ }
+#else
+ tmpFileName = NULL;
+ if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) {
+ delete ff;
+ return NULL;
+ }
+ fwrite(cffStart, 1, cffLength, tmpFile);
+ fclose(tmpFile);
+ if (!useCIDs) {
+ cidToGIDMap = ff->getCIDToGIDMap(&nCIDs);
+ }
+ ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontOpenTypeCFF,
+ tmpFileName->getCString(), gTrue,
+ cidToGIDMap, nCIDs);
+ if (ret) {
+ if (deleteFile) {
+ unlink(fileName);
+ }
+ } else {
+ unlink(tmpFileName->getCString());
+ }
+ delete tmpFileName;
+#endif
+ } else {
+ if (!codeToGID && !useCIDs && ff->isOpenTypeCFF()) {
+ cidToGIDMap = ff->getCIDToGIDMap(&nCIDs);
+ }
+ ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontOpenTypeCFF,
+#if LOAD_FONTS_FROM_MEM
+ fontBuf,
+#else
+ fileName, deleteFile,
+#endif
+ codeToGID ? codeToGID : cidToGIDMap,
+ codeToGID ? codeToGIDLen : nCIDs);
+ }
+ delete ff;
+ if (!ret) {
+ gfree(cidToGIDMap);
+ }
+ return ret;
+}
+
+SplashFontFile *SplashFTFontEngine::loadTrueTypeFont(SplashFontFileID *idA,
+#if LOAD_FONTS_FROM_MEM
+ GString *fontBuf,
+#else
+ char *fileName,
+ GBool deleteFile,
+#endif
+ int fontNum,
+ int *codeToGID,
+ int codeToGIDLen) {
+ FoFiTrueType *ff;
+#if LOAD_FONTS_FROM_MEM
+ GString *fontBuf2;
+#else
+ GString *tmpFileName;
+ FILE *tmpFile;
+#endif
+ SplashFontFile *ret;
+
+#if LOAD_FONTS_FROM_MEM
+ if (!(ff = FoFiTrueType::make(fontBuf->getCString(), fontBuf->getLength(),
+ fontNum))) {
+#else
+ if (!(ff = FoFiTrueType::load(fileName, fontNum))) {
+#endif
+ return NULL;
+ }
+#if LOAD_FONTS_FROM_MEM
+ fontBuf2 = new GString;
+ ff->writeTTF(&gstringWrite, fontBuf2);
+#else
+ tmpFileName = NULL;
+ if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) {
+ delete ff;
+ return NULL;
+ }
+ ff->writeTTF(&fileWrite, tmpFile);
+ fclose(tmpFile);
+#endif
+ delete ff;
+ ret = SplashFTFontFile::loadTrueTypeFont(this, idA, splashFontTrueType,
+#if LOAD_FONTS_FROM_MEM
+ fontBuf2,
+#else
+ tmpFileName->getCString(), gTrue,
+#endif
+ 0, codeToGID, codeToGIDLen);
+#if LOAD_FONTS_FROM_MEM
+ if (ret) {
+ delete fontBuf;
+ } else {
+ delete fontBuf2;
+ }
+#else
+ if (ret) {
+ if (deleteFile) {
+ unlink(fileName);
+ }
+ } else {
+ unlink(tmpFileName->getCString());
+ }
+ delete tmpFileName;
+#endif
+ return ret;
+}
+
+#endif // HAVE_FREETYPE_H
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