libreoffice/vcl/inc/outdev.h

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#ifndef _SV_OUTDEV_H
#define _SV_OUTDEV_H

#include <tools/solar.h>
#include <outfont.hxx>

#include <vector>
#include <list>
#include <set>

class Size;
class Font;
class VirtualDevice;
class ImplGetDevFontList;
class GetDevSizeList;

// -----------------------
// - ImplDevFontListData -
// -----------------------

// flags for mnMatchType member
#define IMPL_DEVFONT_SCALABLE       ((sal_uIntPtr)0x00000001)
#define IMPL_DEVFONT_SYMBOL         ((sal_uIntPtr)0x00000002)
#define IMPL_DEVFONT_NONESYMBOL     ((sal_uIntPtr)0x00000004)
#define IMPL_DEVFONT_LIGHT          ((sal_uIntPtr)0x00000010)
#define IMPL_DEVFONT_BOLD           ((sal_uIntPtr)0x00000020)
#define IMPL_DEVFONT_NORMAL         ((sal_uIntPtr)0x00000040)
#define IMPL_DEVFONT_NONEITALIC     ((sal_uIntPtr)0x00000100)
#define IMPL_DEVFONT_ITALIC         ((sal_uIntPtr)0x00000200)

// TODO: rename ImplDevFontListData to PhysicalFontFamily
class ImplDevFontListData
{
public:
                        ImplDevFontListData( const String& rSearchName );
                        ~ImplDevFontListData();

    const String&       GetFamilyName() const    { return maName; }
    const String&       GetSearchName() const    { return maSearchName; }
    const String&       GetAliasNames() const    { return maMapNames; }
    bool                IsScalable() const       { return mpFirst->IsScalable(); }
    int                 GetMinQuality() const    { return mnMinQuality; }

    bool                AddFontFace( PhysicalFontFace* );
    void                InitMatchData( const utl::FontSubstConfiguration&,
                            const String& rSearchName );
    PhysicalFontFace*   FindBestFontFace( const FontSelectPattern& rFSD ) const;

    void                GetFontHeights( std::set<int>& rHeights ) const;
    void                UpdateDevFontList( ImplGetDevFontList& ) const;
    void                UpdateCloneFontList( ImplDevFontList&,
                                             bool bScalable, bool bEmbeddable ) const;

private:
friend class ImplDevFontList; // TODO: remove soon
    PhysicalFontFace*   mpFirst;            // linked list of physical font faces
    String              maName;             // Fontname (original font family name)
    String              maSearchName;       // normalized font family name
    String              maMapNames;         // fontname aliases
    sal_uIntPtr         mnTypeFaces;        // Typeface Flags
    sal_uIntPtr         mnMatchType;        // MATCH - Type
    String              maMatchFamilyName;  // MATCH - FamilyName
    FontWeight          meMatchWeight;      // MATCH - Weight
    FontWidth           meMatchWidth;       // MATCH - Width
    FontFamily          meFamily;
    FontPitch           mePitch;
    int                 mnMinQuality;       // quality of the worst font face
};


// ----------------------
// - ImplGetDevFontList -
// ----------------------

// an ImplGetDevFontList is created by an ImplDevFontList
// it becomes invalid when original ImplDevFontList is modified
class ImplGetDevFontList
{
private:
    std::vector<PhysicalFontFace*> maDevFontVector;

public:
                        ImplGetDevFontList()        { maDevFontVector.reserve(1024); }
    void                Add( PhysicalFontFace* pFace )  { maDevFontVector.push_back( pFace ); }
    PhysicalFontFace*   Get( int nIndex ) const     { return maDevFontVector[ nIndex ]; }
    int                 Count() const               { return maDevFontVector.size(); }
};

// ----------------------
// - ImplGetDevSizeList -
// ----------------------

class ImplGetDevSizeList
{
private:
    String              maFontName;
    std::vector<int>    maSizeList;

public:
                        ImplGetDevSizeList( const String& rFontName )
                        : maFontName( rFontName ) { maSizeList.reserve( 32 ); }
    void                Add( int nHeight )      { maSizeList.push_back( nHeight ); }
    int                 Count() const           { return maSizeList.size(); }
    int                 Get( int nIndex ) const { return maSizeList[ nIndex ]; }
    const String&       GetFontName() const     { return maFontName; }
};

// ------------------------
// - ImplFontSubstitution -
// ------------------------
// nowadays these substitutions are needed for backward compatibility and tight platform integration:
// - substitutions from configuration entries (Tools->Options->FontReplacement and/or fontconfig)
// - device specific substitutions (e.g. for PS printer builtin fonts)
// - substitutions for missing fonts defined by configuration entries (generic and/or platform dependent fallbacks)
// - substitutions for missing fonts defined by multi-token fontnames (e.g. fontname="SpecialFont;FallbackA;FallbackB")
// - substitutions for incomplete fonts (implicit, generic, EUDC and/or platform dependent fallbacks)
// - substitutions for missing symbol fonts by translating code points into other symbol fonts

class ImplFontSubstitution
{
    // TODO: there is more commonality between the different substitutions
protected:
    virtual ~ImplFontSubstitution() {}
};

// ImplDirectFontSubstitution is for Tools->Options->FontReplacement and PsPrinter substitutions
// The clss is just a simple port of the unmaintainable manual-linked-list based mechanism
// TODO: get rid of this class when the Tools->Options->FontReplacement tabpage is gone for good

struct ImplFontSubstEntry
{
    String                  maName;
    String                  maReplaceName;
    String                  maSearchName;
    String                  maSearchReplaceName;
    sal_uInt16                  mnFlags;

    ImplFontSubstEntry(  const String& rFontName, const String& rSubstFontName, sal_uInt16 nSubstFlags );
};

class ImplDirectFontSubstitution
:   public ImplFontSubstitution
{
private:
    typedef std::list<ImplFontSubstEntry> FontSubstList;
    FontSubstList maFontSubstList;
public:
    void    AddFontSubstitute( const String& rFontName, const String& rSubstName, sal_uInt16 nFlags );
    void    RemoveFontSubstitute( int nIndex );
    int     GetFontSubstituteCount() const { return maFontSubstList.size(); };
    bool    Empty() const { return maFontSubstList.empty(); }
    void    Clear() { maFontSubstList.clear(); }

    bool    FindFontSubstitute( String& rSubstName, const String& rFontName, sal_uInt16 nFlags ) const;
};

// PreMatchFontSubstitution
// abstracts the concept of a configured font substitution
// before the availability of the originally selected font has been checked
class ImplPreMatchFontSubstitution
:   public ImplFontSubstitution
{
public:
    virtual bool FindFontSubstitute( FontSelectPattern& ) const = 0;
};

// ImplGlyphFallbackFontSubstitution
// abstracts the concept of finding the best font to support an incomplete font
class ImplGlyphFallbackFontSubstitution
:   public ImplFontSubstitution
{
public:
    virtual bool FindFontSubstitute( FontSelectPattern&, rtl::OUString& rMissingCodes ) const = 0;
};

// -----------------
// - ImplFontCache -
// -----------------
// TODO: closely couple with ImplDevFontList

class ImplFontCache
{
private:
    ImplFontEntry*      mpFirstEntry;
    int                 mnRef0Count;    // number of unreferenced ImplFontEntries
    bool                mbPrinter;

    // cache of recently used font instances
    struct IFSD_Equal { bool operator()( const FontSelectPattern&, const FontSelectPattern& ) const; };
    struct IFSD_Hash { size_t operator()( const FontSelectPattern& ) const; };
    typedef ::boost::unordered_map<FontSelectPattern,ImplFontEntry*,IFSD_Hash,IFSD_Equal > FontInstanceList;
    FontInstanceList    maFontInstanceList;

public:
                        ImplFontCache( bool bPrinter );
                        ~ImplFontCache();

    ImplFontEntry*      GetFontEntry( ImplDevFontList*,
                             const Font&, const Size& rPixelSize, float fExactHeight,
                ImplDirectFontSubstitution* pDevSpecific );
    ImplFontEntry*      GetFontEntry( ImplDevFontList*,
                    FontSelectPattern&, ImplDirectFontSubstitution* pDevSpecific );
    ImplFontEntry*      GetGlyphFallbackFont( ImplDevFontList*, FontSelectPattern&,
                            int nFallbackLevel, rtl::OUString& rMissingCodes );
    void                Release( ImplFontEntry* );
    void                Invalidate();
};

// ------------------
// - ImplOutDevData -
// ------------------

namespace vcl { struct ControlLayoutData; }
// #i75163#
namespace basegfx { class B2DHomMatrix; }

struct ImplOutDevData
{
    VirtualDevice*              mpRotateDev;
    vcl::ControlLayoutData*     mpRecordLayout;
    Rectangle                   maRecordRect;
    ImplDirectFontSubstitution      maDevFontSubst;

    // #i75163#
    basegfx::B2DHomMatrix*      mpViewTransform;
    basegfx::B2DHomMatrix*      mpInverseViewTransform;
};

void ImplFreeOutDevFontData();

#endif // _SV_OUTDEV_H

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