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Current File : //usr/share/emscripten/tests/poppler/splash/SplashFontEngine.cc
//========================================================================
//
// SplashFontEngine.cc
//
//========================================================================
//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2006 Takashi Iwai <tiwai@suse.de>
// Copyright (C) 2009 Petr Gajdos <pgajdos@novell.com>
// Copyright (C) 2009 Kovid Goyal <kovid@kovidgoyal.net>
// Copyright (C) 2009 Albert Astals Cid <aacid@kde.org>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================
#include <config.h>
#ifdef USE_GCC_PRAGMAS
#pragma implementation
#endif
#if HAVE_T1LIB_H
#include <t1lib.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "goo/gmem.h"
#include "goo/GooString.h"
#include "SplashMath.h"
#include "SplashT1FontEngine.h"
#include "SplashFTFontEngine.h"
#include "SplashFontFile.h"
#include "SplashFontFileID.h"
#include "SplashFont.h"
#include "SplashFontEngine.h"
#ifdef VMS
#if (__VMS_VER < 70000000)
extern "C" int unlink(char *filename);
#endif
#endif
#ifdef VMS
#if (__VMS_VER < 70000000)
extern "C" int unlink(char *filename);
#endif
#endif
//------------------------------------------------------------------------
// SplashFontEngine
//------------------------------------------------------------------------
SplashFontEngine::SplashFontEngine(
#if HAVE_T1LIB_H
GBool enableT1lib,
#endif
#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
GBool enableFreeType,
GBool enableFreeTypeHinting,
#endif
GBool aa) {
int i;
for (i = 0; i < splashFontCacheSize; ++i) {
fontCache[i] = NULL;
}
#if HAVE_T1LIB_H
if (enableT1lib) {
t1Engine = SplashT1FontEngine::init(aa);
} else {
t1Engine = NULL;
}
#endif
#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
if (enableFreeType) {
ftEngine = SplashFTFontEngine::init(aa, enableFreeTypeHinting);
} else {
ftEngine = NULL;
}
#endif
}
SplashFontEngine::~SplashFontEngine() {
int i;
for (i = 0; i < splashFontCacheSize; ++i) {
if (fontCache[i]) {
delete fontCache[i];
}
}
#if HAVE_T1LIB_H
if (t1Engine) {
delete t1Engine;
}
#endif
#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
if (ftEngine) {
delete ftEngine;
}
#endif
}
SplashFontFile *SplashFontEngine::getFontFile(SplashFontFileID *id) {
SplashFontFile *fontFile;
int i;
for (i = 0; i < splashFontCacheSize; ++i) {
if (fontCache[i]) {
fontFile = fontCache[i]->getFontFile();
if (fontFile && fontFile->getID()->matches(id)) {
return fontFile;
}
}
}
return NULL;
}
SplashFontFile *SplashFontEngine::loadType1Font(SplashFontFileID *idA,
SplashFontSrc *src,
char **enc) {
SplashFontFile *fontFile;
fontFile = NULL;
#if HAVE_T1LIB_H
if (!fontFile && t1Engine) {
fontFile = t1Engine->loadType1Font(idA, src, enc);
}
#endif
#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
if (!fontFile && ftEngine) {
fontFile = ftEngine->loadType1Font(idA, src, enc);
}
#endif
#ifndef _WIN32
// delete the (temporary) font file -- with Unix hard link
// semantics, this will remove the last link; otherwise it will
// return an error, leaving the file to be deleted later (if
// loadXYZFont failed, the file will always be deleted)
if (src->isFile)
src->unref();
#endif
return fontFile;
}
SplashFontFile *SplashFontEngine::loadType1CFont(SplashFontFileID *idA,
SplashFontSrc *src,
char **enc) {
SplashFontFile *fontFile;
fontFile = NULL;
#if HAVE_T1LIB_H
if (!fontFile && t1Engine) {
fontFile = t1Engine->loadType1CFont(idA, src, enc);
}
#endif
#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
if (!fontFile && ftEngine) {
fontFile = ftEngine->loadType1CFont(idA, src, enc);
}
#endif
#ifndef _WIN32
// delete the (temporary) font file -- with Unix hard link
// semantics, this will remove the last link; otherwise it will
// return an error, leaving the file to be deleted later (if
// loadXYZFont failed, the file will always be deleted)
if (src->isFile)
src->unref();
#endif
return fontFile;
}
SplashFontFile *SplashFontEngine::loadOpenTypeT1CFont(SplashFontFileID *idA,
SplashFontSrc *src,
char **enc) {
SplashFontFile *fontFile;
fontFile = NULL;
#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
if (!fontFile && ftEngine) {
fontFile = ftEngine->loadOpenTypeT1CFont(idA, src, enc);
}
#endif
// delete the (temporary) font file -- with Unix hard link
// semantics, this will remove the last link; otherwise it will
// return an error, leaving the file to be deleted later (if
// loadXYZFont failed, the file will always be deleted)
if (src->isFile)
src->unref();
return fontFile;
}
SplashFontFile *SplashFontEngine::loadCIDFont(SplashFontFileID *idA,
SplashFontSrc *src) {
SplashFontFile *fontFile;
fontFile = NULL;
#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
if (!fontFile && ftEngine) {
fontFile = ftEngine->loadCIDFont(idA, src);
}
#endif
#ifndef _WIN32
// delete the (temporary) font file -- with Unix hard link
// semantics, this will remove the last link; otherwise it will
// return an error, leaving the file to be deleted later (if
// loadXYZFont failed, the file will always be deleted)
if (src->isFile)
src->unref();
#endif
return fontFile;
}
SplashFontFile *SplashFontEngine::loadOpenTypeCFFFont(SplashFontFileID *idA,
SplashFontSrc *src) {
SplashFontFile *fontFile;
fontFile = NULL;
#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
if (!fontFile && ftEngine) {
fontFile = ftEngine->loadOpenTypeCFFFont(idA, src);
}
#endif
// delete the (temporary) font file -- with Unix hard link
// semantics, this will remove the last link; otherwise it will
// return an error, leaving the file to be deleted later (if
// loadXYZFont failed, the file will always be deleted)
if (src->isFile)
src->unref();
return fontFile;
}
SplashFontFile *SplashFontEngine::loadTrueTypeFont(SplashFontFileID *idA,
SplashFontSrc *src,
Gushort *codeToGID,
int codeToGIDLen,
int faceIndex) {
SplashFontFile *fontFile;
fontFile = NULL;
#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
if (!fontFile && ftEngine) {
fontFile = ftEngine->loadTrueTypeFont(idA, src,
codeToGID, codeToGIDLen, faceIndex);
}
#endif
if (!fontFile) {
gfree(codeToGID);
}
#ifndef _WIN32
// delete the (temporary) font file -- with Unix hard link
// semantics, this will remove the last link; otherwise it will
// return an error, leaving the file to be deleted later (if
// loadXYZFont failed, the file will always be deleted)
if (src->isFile)
src->unref();
#endif
return fontFile;
}
SplashFont *SplashFontEngine::getFont(SplashFontFile *fontFile,
SplashCoord *textMat,
SplashCoord *ctm) {
SplashCoord mat[4];
SplashFont *font;
int i, j;
mat[0] = textMat[0] * ctm[0] + textMat[1] * ctm[2];
mat[1] = -(textMat[0] * ctm[1] + textMat[1] * ctm[3]);
mat[2] = textMat[2] * ctm[0] + textMat[3] * ctm[2];
mat[3] = -(textMat[2] * ctm[1] + textMat[3] * ctm[3]);
if (splashAbs(mat[0] * mat[3] - mat[1] * mat[2]) < 0.01) {
// avoid a singular (or close-to-singular) matrix
mat[0] = 0.01; mat[1] = 0;
mat[2] = 0; mat[3] = 0.01;
}
font = fontCache[0];
if (font && font->matches(fontFile, mat, textMat)) {
return font;
}
for (i = 1; i < splashFontCacheSize; ++i) {
font = fontCache[i];
if (font && font->matches(fontFile, mat, textMat)) {
for (j = i; j > 0; --j) {
fontCache[j] = fontCache[j-1];
}
fontCache[0] = font;
return font;
}
}
font = fontFile->makeFont(mat, textMat);
if (fontCache[splashFontCacheSize - 1]) {
delete fontCache[splashFontCacheSize - 1];
}
for (j = splashFontCacheSize - 1; j > 0; --j) {
fontCache[j] = fontCache[j-1];
}
fontCache[0] = font;
return font;
}
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