//========================================================================
//
// CairoFontEngine.h
//
// Copyright 2003 Glyph & Cog, LLC
// Copyright 2004 Red Hat, Inc
//
//========================================================================

//========================================================================
//
// 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) 2005, 2006 Kristian Høgsberg <krh@redhat.com>
// Copyright (C) 2005, 2018, 2019 Albert Astals Cid <aacid@kde.org>
// Copyright (C) 2006, 2007 Jeff Muizelaar <jeff@infidigm.net>
// Copyright (C) 2006, 2010 Carlos Garcia Campos <carlosgc@gnome.org>
// Copyright (C) 2008, 2017 Adrian Johnson <ajohnson@redneon.com>
// Copyright (C) 2013 Thomas Freitag <Thomas.Freitag@alfa.de>
// Copyright (C) 2018 Adam Reichold <adam.reichold@t-online.de>
//
// 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
//
//========================================================================

#ifndef CAIROFONTENGINE_H
#define CAIROFONTENGINE_H

#include <mutex>

#include "poppler-config.h"
#include <cairo-ft.h>

#include "GfxFont.h"
#include "PDFDoc.h"

class CairoFontEngine;

class CairoFont
{
public:
    CairoFont(Ref refA, cairo_font_face_t *cairo_font_faceA, int *codeToGIDA, unsigned int codeToGIDLenA, bool substituteA, bool printingA);
    virtual ~CairoFont();
    CairoFont(const CairoFont &) = delete;
    CairoFont &operator=(const CairoFont &other) = delete;

    virtual bool matches(Ref &other, bool printing);
    cairo_font_face_t *getFontFace();
    unsigned long getGlyph(CharCode code, const Unicode *u, int uLen);
    double getSubstitutionCorrection(GfxFont *gfxFont);

    bool isSubstitute() { return substitute; }

protected:
    Ref ref;
    cairo_font_face_t *cairo_font_face;

    int *codeToGID;
    unsigned int codeToGIDLen;

    bool substitute;
    bool printing;
};

//------------------------------------------------------------------------

class CairoFreeTypeFont : public CairoFont
{
public:
    static CairoFreeTypeFont *create(GfxFont *gfxFont, XRef *xref, FT_Library lib, bool useCIDs);
    ~CairoFreeTypeFont() override;

private:
    CairoFreeTypeFont(Ref ref, cairo_font_face_t *cairo_font_face, int *codeToGID, unsigned int codeToGIDLen, bool substitute);
};

//------------------------------------------------------------------------

class CairoType3Font : public CairoFont
{
public:
    static CairoType3Font *create(GfxFont *gfxFont, PDFDoc *doc, CairoFontEngine *fontEngine, bool printing, XRef *xref);
    ~CairoType3Font() override;

    bool matches(Ref &other, bool printing) override;

private:
    CairoType3Font(Ref ref, cairo_font_face_t *cairo_font_face, int *codeToGID, unsigned int codeToGIDLen, bool printing, XRef *xref);
};

//------------------------------------------------------------------------

#define cairoFontCacheSize 64

//------------------------------------------------------------------------
// CairoFontEngine
//------------------------------------------------------------------------

class CairoFontEngine
{
public:
    // Create a font engine.
    CairoFontEngine(FT_Library libA);
    ~CairoFontEngine();
    CairoFontEngine(const CairoFontEngine &) = delete;
    CairoFontEngine &operator=(const CairoFontEngine &other) = delete;

    CairoFont *getFont(GfxFont *gfxFont, PDFDoc *doc, bool printing, XRef *xref);

private:
    CairoFont *fontCache[cairoFontCacheSize];
    FT_Library lib;
    bool useCIDs;
    mutable std::recursive_mutex mutex;
};

#endif
