poppler-24.05.0/splash/SplashFTFontFile.cc

//========================================================================
//
// SplashFTFontFile.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 <[email protected]>
// Copyright (C) 2014, 2017, 2022 Adrian Johnson <[email protected]>
// Copyright (C) 2017, 2018, 2022 Oliver Sander <[email protected]>
// Copyright (C) 2018 Albert Astals Cid <[email protected]>
//
// 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>

#include "goo/ft_utils.h"
#include "goo/gmem.h"
#include "goo/GooString.h"
#include "poppler/GfxFont.h"
#include "SplashFTFontEngine.h"
#include "SplashFTFont.h"
#include "SplashFTFontFile.h"

//------------------------------------------------------------------------
// SplashFTFontFile
//------------------------------------------------------------------------

SplashFontFile *SplashFTFontFile::loadType1Font(SplashFTFontEngine *engineA, SplashFontFileID *idA, SplashFontSrc *src, const char **encA)
{
    FT_Face faceA;
    int *codeToGIDA;
    const char *name;
    int i;

    if (src->isFile) {
        if (ft_new_face_from_file(engineA->lib, src->fileName.c_str(), 0, &faceA)) {
            return nullptr;
        }
    } else {
        if (FT_New_Memory_Face(engineA->lib, (const FT_Byte *)src->buf.data(), src->buf.size(), 0, &faceA)) {
            return nullptr;
        }
    }
    codeToGIDA = (int *)gmallocn(256, sizeof(int));
    for (i = 0; i < 256; ++i) {
        codeToGIDA[i] = 0;
        if ((name = encA[i])) {
            codeToGIDA[i] = (int)FT_Get_Name_Index(faceA, (char *)name);
            if (codeToGIDA[i] == 0) {
                name = GfxFont::getAlternateName(name);
                if (name) {
                    codeToGIDA[i] = FT_Get_Name_Index(faceA, (char *)name);
                }
            }
        }
    }

    return new SplashFTFontFile(engineA, idA, src, faceA, codeToGIDA, 256, false, true);
}

SplashFontFile *SplashFTFontFile::loadCIDFont(SplashFTFontEngine *engineA, SplashFontFileID *idA, SplashFontSrc *src, int *codeToGIDA, int codeToGIDLenA)
{
    FT_Face faceA;

    if (src->isFile) {
        if (ft_new_face_from_file(engineA->lib, src->fileName.c_str(), 0, &faceA)) {
            return nullptr;
        }
    } else {
        if (FT_New_Memory_Face(engineA->lib, (const FT_Byte *)src->buf.data(), src->buf.size(), 0, &faceA)) {
            return nullptr;
        }
    }

    return new SplashFTFontFile(engineA, idA, src, faceA, codeToGIDA, codeToGIDLenA, false, false);
}

SplashFontFile *SplashFTFontFile::loadTrueTypeFont(SplashFTFontEngine *engineA, SplashFontFileID *idA, SplashFontSrc *src, int *codeToGIDA, int codeToGIDLenA, int faceIndexA)
{
    FT_Face faceA;

    if (src->isFile) {
        if (ft_new_face_from_file(engineA->lib, src->fileName.c_str(), faceIndexA, &faceA)) {
            return nullptr;
        }
    } else {
        if (FT_New_Memory_Face(engineA->lib, (const FT_Byte *)src->buf.data(), src->buf.size(), faceIndexA, &faceA)) {
            return nullptr;
        }
    }

    return new SplashFTFontFile(engineA, idA, src, faceA, codeToGIDA, codeToGIDLenA, true, false);
}

SplashFTFontFile::SplashFTFontFile(SplashFTFontEngine *engineA, SplashFontFileID *idA, SplashFontSrc *srcA, FT_Face faceA, int *codeToGIDA, int codeToGIDLenA, bool trueTypeA, bool type1A) : SplashFontFile(idA, srcA)
{
    engine = engineA;
    face = faceA;
    codeToGID = codeToGIDA;
    codeToGIDLen = codeToGIDLenA;
    trueType = trueTypeA;
    type1 = type1A;
}

SplashFTFontFile::~SplashFTFontFile()
{
    if (face) {
        FT_Done_Face(face);
    }
    if (codeToGID) {
        gfree(codeToGID);
    }
}

SplashFont *SplashFTFontFile::makeFont(SplashCoord *mat, const SplashCoord *textMat)
{
    SplashFont *font;

    font = new SplashFTFont(this, mat, textMat);
    font->initCache();
    return font;
}