/* -*- 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 .
 */

#include <memory>
#include <string.h>

#include <tools/debug.hxx>
#include <tools/fract.hxx>
#include <i18nlangtag/languagetag.hxx>
#include <i18nlangtag/mslangid.hxx>
#include <vcl/outdev.hxx>
#include <vcl/svapp.hxx>
#include <vcl/settings.hxx>
#include <sal/macros.h>
#include <svtools/strings.hrc>
#include <svtools/svtresid.hxx>
#include <svtools/ctrltool.hxx>
#include <o3tl/typed_flags_set.hxx>
#include <comphelper/lok.hxx>

// Standard fontsizes for scalable Fonts
const sal_IntPtr FontList::aStdSizeAry[] =
{
     60,
     70,
     80,
     90,
    100,
    105,
    110,
    120,
    130,
    140,
    150,
    160,
    180,
    200,
    220,
    240,
    260,
    280,
    320,
    360,
    400,
    440,
    480,
    540,
    600,
    660,
    720,
    800,
    880,
    960,
    0
};

namespace {

class ImplFontListFontMetric : public FontMetric
{
    friend FontList;

private:
    VclPtr<OutputDevice>    mpDevice;
    ImplFontListFontMetric*   mpNext;

public:
                            ImplFontListFontMetric( const FontMetric& rInfo,
                                                  OutputDevice* pDev ) :
                                FontMetric( rInfo ), mpDevice(pDev), mpNext(nullptr)
                            {
                            }

    OutputDevice*           GetDevice() const { return mpDevice; }
};

enum class FontListFontNameType
{
    NONE              = 0x00,
    PRINTER           = 0x01,
    SCREEN            = 0x02,
};

}

namespace o3tl
{
    template<> struct typed_flags<FontListFontNameType> : is_typed_flags<FontListFontNameType, 0x3> {};
}

class ImplFontListNameInfo
{
    friend class FontList;

private:
    OUString                maSearchName;
    ImplFontListFontMetric* mpFirst;
    FontListFontNameType    mnType;

    explicit ImplFontListNameInfo(const OUString& rSearchName)
        : maSearchName(rSearchName)
        , mpFirst(nullptr)
        , mnType(FontListFontNameType::NONE)
    {
    }
};

//sort normal to the start
static int sortWeightValue(FontWeight eWeight)
{
    if (eWeight < WEIGHT_NORMAL)
        return eWeight + 1;
    if (eWeight > WEIGHT_NORMAL)
        return eWeight - 1;
    return 0; // eWeight == WEIGHT_NORMAL
}

static sal_Int32 ImplCompareFontMetric( ImplFontListFontMetric* pInfo1,
                                          ImplFontListFontMetric* pInfo2 )
{
    //Sort non italic before italics
    if ( pInfo1->GetItalic() < pInfo2->GetItalic() )
        return -1;
    else if ( pInfo1->GetItalic() > pInfo2->GetItalic() )
        return 1;

    //Sort normal weight to the start, followed by lightest to heaviest weights
    int nWeight1 = sortWeightValue(pInfo1->GetWeight());
    int nWeight2 = sortWeightValue(pInfo2->GetWeight());

    if ( nWeight1 < nWeight2 )
        return -1;
    else if ( nWeight1 > nWeight2 )
        return 1;

    return pInfo1->GetStyleName().compareTo( pInfo2->GetStyleName() );
}

static OUString ImplMakeSearchString(const OUString& rStr)
{
    return rStr.toAsciiLowerCase();
}

static OUString ImplMakeSearchStringFromName(const OUString& rStr)
{
    // check for features before alternate font separator
    sal_Int32 nColon = rStr.indexOf(':');
    sal_Int32 nSemiColon = rStr.indexOf(';');
    if (nColon != -1 && (nSemiColon == -1 || nColon < nSemiColon))
        return ImplMakeSearchString(rStr.getToken( 0, ':' ));
    return ImplMakeSearchString(rStr.getToken( 0, ';' ));
}

ImplFontListNameInfo* FontList::ImplFind(const OUString& rSearchName, sal_uInt32* pIndex) const
{
    // Append if there is no entry in the list or if the entry is larger
    // then the last one. We only compare to the last entry as the list of VCL
    // is returned sorted, which increases the probability that appending
    // is more likely
    if (m_Entries.empty())
    {
        if ( pIndex )
            *pIndex = SAL_MAX_UINT32;
        return nullptr;
    }
    else
    {
        const ImplFontListNameInfo* pCmpData = m_Entries.back().get();
        sal_Int32 nComp = rSearchName.compareTo( pCmpData->maSearchName );
        if (nComp > 0)
        {
            if ( pIndex )
                *pIndex = SAL_MAX_UINT32;
            return nullptr;
        }
        else if (nComp == 0)
            return const_cast<ImplFontListNameInfo*>(pCmpData);
    }

    // search fonts in the list
    const ImplFontListNameInfo* pCompareData;
    const ImplFontListNameInfo* pFoundData = nullptr;
    size_t                      nLow = 0;
    size_t                      nHigh = m_Entries.size() - 1;
    size_t                      nMid;

    do
    {
        nMid = (nLow + nHigh) / 2;
        pCompareData = m_Entries[nMid].get();
        sal_Int32 nComp = rSearchName.compareTo(pCompareData->maSearchName);
        if (nComp < 0)
        {
            if ( !nMid )
                break;
            nHigh = nMid-1;
        }
        else
        {
            if (nComp > 0)
                nLow = nMid + 1;
            else
            {
                pFoundData = pCompareData;
                break;
            }
        }
    }
    while ( nLow <= nHigh );

    if ( pIndex )
    {
        sal_Int32 nComp = rSearchName.compareTo(pCompareData->maSearchName);
        if (nComp > 0)
            *pIndex = (nMid+1);
        else
            *pIndex = nMid;
    }

    return const_cast<ImplFontListNameInfo*>(pFoundData);
}

ImplFontListNameInfo* FontList::ImplFindByName(const OUString& rStr) const
{
    OUString aSearchName = ImplMakeSearchStringFromName(rStr);
    return ImplFind( aSearchName, nullptr );
}

void FontList::ImplInsertFonts(OutputDevice* pDevice, bool bInsertData)
{
    rtl_TextEncoding eSystemEncoding = osl_getThreadTextEncoding();

    FontListFontNameType nType;
    if ( pDevice->GetOutDevType() != OUTDEV_PRINTER )
        nType = FontListFontNameType::SCREEN;
    else
        nType = FontListFontNameType::PRINTER;

    // inquire all fonts from the device
    int n = pDevice->GetDevFontCount();
    if (n == 0 && comphelper::LibreOfficeKit::isActive())
    {
        pDevice->RefreshFontData(true);
        n = pDevice->GetDevFontCount();
    }

    for (int i = 0; i < n; ++i)
    {
        FontMetric aFontMetric = pDevice->GetDevFont( i );
        OUString aSearchName(aFontMetric.GetFamilyName());
        ImplFontListNameInfo*   pData;
        sal_uInt32              nIndex;
        aSearchName = ImplMakeSearchString(aSearchName);
        pData = ImplFind( aSearchName, &nIndex );

        if ( !pData )
        {
            if ( bInsertData )
            {
                ImplFontListFontMetric* pNewInfo = new ImplFontListFontMetric( aFontMetric, pDevice );
                pData = new ImplFontListNameInfo( aSearchName );
                pData->mpFirst      = pNewInfo;
                pNewInfo->mpNext    = nullptr;

                if (nIndex < static_cast<sal_uInt32>(m_Entries.size()))
                    m_Entries.insert(m_Entries.begin()+nIndex,
                            std::unique_ptr<ImplFontListNameInfo>(pData));
                else
                    m_Entries.push_back(std::unique_ptr<ImplFontListNameInfo>(pData));
            }
        }
        else
        {
            if ( bInsertData )
            {
                bool                    bInsert = true;
                ImplFontListFontMetric*   pPrev = nullptr;
                ImplFontListFontMetric*   pTemp = pData->mpFirst;
                ImplFontListFontMetric*   pNewInfo = new ImplFontListFontMetric( aFontMetric, pDevice );
                while ( pTemp )
                {
                    sal_Int32 eComp = ImplCompareFontMetric( pNewInfo, pTemp );
                    if ( eComp <= 0 )
                    {
                        if ( eComp == 0 )
                        {
                            // Overwrite charset, because charset should match
                            // with the system charset
                            if ( (pTemp->GetCharSet() != eSystemEncoding) &&
                                 (pNewInfo->GetCharSet() == eSystemEncoding) )
                            {
                                ImplFontListFontMetric* pTemp2 = pTemp->mpNext;
                                *static_cast<FontMetric*>(pTemp) = *static_cast<FontMetric*>(pNewInfo);
                                pTemp->mpNext = pTemp2;
                            }
                            delete pNewInfo;
                            bInsert = false;
                        }

                        break;
                    }

                    pPrev = pTemp;
                    pTemp = pTemp->mpNext;
                }

                if ( bInsert )
                {
                    pNewInfo->mpNext = pTemp;
                    if ( pPrev )
                        pPrev->mpNext = pNewInfo;
                    else
                        pData->mpFirst = pNewInfo;
                }
            }
        }

        if ( pData )
            pData->mnType |= nType;
    }
}

FontList::FontList(OutputDevice* pDevice, OutputDevice* pDevice2)
{
    // initialise variables
    mpDev = pDevice;
    mpDev2 = pDevice2;

    // store style names
    maLight         = SvtResId(STR_SVT_STYLE_LIGHT);
    maLightItalic   = SvtResId(STR_SVT_STYLE_LIGHT_ITALIC);
    maNormal        = SvtResId(STR_SVT_STYLE_NORMAL);
    maNormalItalic  = SvtResId(STR_SVT_STYLE_NORMAL_ITALIC);
    maBold          = SvtResId(STR_SVT_STYLE_BOLD);
    maBoldItalic    = SvtResId(STR_SVT_STYLE_BOLD_ITALIC);
    maBlack         = SvtResId(STR_SVT_STYLE_BLACK);
    maBlackItalic   = SvtResId(STR_SVT_STYLE_BLACK_ITALIC);

    ImplInsertFonts(pDevice, true);

    // if required compare to the screen fonts
    // in order to map the duplicates to Equal
    bool bCompareWindow = false;
    if ( !pDevice2 && (pDevice->GetOutDevType() == OUTDEV_PRINTER) )
    {
        bCompareWindow = true;
        pDevice2 = Application::GetDefaultDevice();
    }

    if ( pDevice2 &&
         (pDevice2->GetOutDevType() != pDevice->GetOutDevType()) )
        ImplInsertFonts(pDevice2, !bCompareWindow);
}

FontList::~FontList()
{
    // delete FontMetrics
    ImplFontListFontMetric *pTemp, *pInfo;
    for (auto const& it : m_Entries)
    {
        pInfo = it->mpFirst;
        while ( pInfo )
        {
            pTemp = pInfo->mpNext;
            delete pInfo;
            pInfo = pTemp;
        }
    }
}

std::unique_ptr<FontList> FontList::Clone() const
{
    return std::unique_ptr<FontList>(new FontList(mpDev, mpDev2));
}

const OUString& FontList::GetStyleName(FontWeight eWeight, FontItalic eItalic) const
{
    if ( eWeight > WEIGHT_BOLD )
    {
        if ( eItalic > ITALIC_NONE )
            return maBlackItalic;
        else
            return maBlack;
    }
    else if ( eWeight > WEIGHT_MEDIUM )
    {
        if ( eItalic > ITALIC_NONE )
            return maBoldItalic;
        else
            return maBold;
    }
    else if ( eWeight > WEIGHT_LIGHT )
    {
        if ( eItalic > ITALIC_NONE )
            return maNormalItalic;
        else
            return maNormal;
    }
    else if ( eWeight != WEIGHT_DONTKNOW )
    {
        if ( eItalic > ITALIC_NONE )
            return maLightItalic;
        else
            return maLight;
    }
    else
    {
        if ( eItalic > ITALIC_NONE )
            return maNormalItalic;
        else
            return maNormal;
    }
}

OUString FontList::GetStyleName(const FontMetric& rInfo) const
{
    OUString aStyleName = rInfo.GetStyleName();
    FontWeight eWeight = rInfo.GetWeight();
    FontItalic eItalic = rInfo.GetItalic();

    // return synthetic Name if no StyleName was set
    if (aStyleName.isEmpty())
        aStyleName = GetStyleName(eWeight, eItalic);
    else
    {
        // Translate StyleName to localized name
        OUString aCompareStyleName = aStyleName.toAsciiLowerCase().replaceAll(" ", "");
        if (aCompareStyleName == "bold")
            aStyleName = maBold;
        else if (aCompareStyleName == "bolditalic")
            aStyleName = maBoldItalic;
        else if (aCompareStyleName == "italic")
            aStyleName = maNormalItalic;
        else if (aCompareStyleName == "standard")
            aStyleName = maNormal;
        else if (aCompareStyleName == "regular")
            aStyleName = maNormal;
        else if (aCompareStyleName == "medium")
            aStyleName = maNormal;
        else if (aCompareStyleName == "light")
            aStyleName = maLight;
        else if (aCompareStyleName == "lightitalic")
            aStyleName = maLightItalic;
        else if (aCompareStyleName == "black")
            aStyleName = maBlack;
        else if (aCompareStyleName == "blackitalic")
            aStyleName = maBlackItalic;
        /* tdf#107700 support some less common style names with localization */
        else if (aCompareStyleName == "book")
            aStyleName = SvtResId(STR_SVT_STYLE_BOOK);
        else if (aCompareStyleName == "boldoblique")
            aStyleName = SvtResId(STR_SVT_STYLE_BOLD_OBLIQUE);
        else if (aCompareStyleName == "condensed")
            aStyleName = SvtResId(STR_SVT_STYLE_CONDENSED);
        else if (aCompareStyleName == "condensedbold")
            aStyleName = SvtResId(STR_SVT_STYLE_CONDENSED_BOLD);
        else if (aCompareStyleName == "condensedbolditalic")
            aStyleName = SvtResId(STR_SVT_STYLE_CONDENSED_BOLD_ITALIC);
        else if (aCompareStyleName == "condensedboldoblique")
            aStyleName = SvtResId(STR_SVT_STYLE_CONDENSED_BOLD_OBLIQUE);
        else if (aCompareStyleName == "condenseditalic")
            aStyleName = SvtResId(STR_SVT_STYLE_CONDENSED_ITALIC);
        else if (aCompareStyleName == "condensedoblique")
            aStyleName = SvtResId(STR_SVT_STYLE_CONDENSED_OBLIQUE);
        else if (aCompareStyleName == "extralight")
            aStyleName = SvtResId(STR_SVT_STYLE_EXTRALIGHT);
        else if (aCompareStyleName == "extralightitalic")
            aStyleName = SvtResId(STR_SVT_STYLE_EXTRALIGHT_ITALIC);
        /* Medium is synonym with Normal */
        else if (aCompareStyleName == "mediumitalic")
            aStyleName = maNormalItalic;
        else if (aCompareStyleName == "oblique")
            aStyleName = SvtResId(STR_SVT_STYLE_OBLIQUE);
        else if (aCompareStyleName == "semibold")
            aStyleName = SvtResId(STR_SVT_STYLE_SEMIBOLD);
        else if (aCompareStyleName == "semibolditalic")
            aStyleName = SvtResId(STR_SVT_STYLE_SEMIBOLD_ITALIC);

        // fix up StyleName, because the PS Printer driver from
        // W2000 returns wrong StyleNames (e.g. Bold instead of Bold Italic
        // for Helvetica)
        if ( eItalic > ITALIC_NONE )
        {
            if ( (aStyleName == maNormal) ||
                 (aStyleName == maBold) ||
                 (aStyleName == maLight) ||
                 (aStyleName == maBlack) )
                aStyleName = GetStyleName( eWeight, eItalic );
        }
    }

    return aStyleName;
}

OUString FontList::GetFontMapText( const FontMetric& rInfo ) const
{
    if ( rInfo.GetFamilyName().isEmpty() )
    {
        return OUString();
    }

    // Search Fontname
    ImplFontListNameInfo* pData = ImplFindByName( rInfo.GetFamilyName() );
    if ( !pData )
    {
        if (maMapNotAvailable.isEmpty())
            maMapNotAvailable = SvtResId(STR_SVT_FONTMAP_NOTAVAILABLE);
        return maMapNotAvailable;
    }

    // search for synthetic style
    FontListFontNameType nType       = pData->mnType;
    const OUString&      rStyleName  = rInfo.GetStyleName();
    if (!rStyleName.isEmpty())
    {
        bool                    bNotSynthetic = false;
        FontWeight              eWeight = rInfo.GetWeight();
        FontItalic              eItalic = rInfo.GetItalic();
        ImplFontListFontMetric*   pFontMetric = pData->mpFirst;
        while ( pFontMetric )
        {
            if ( (eWeight == pFontMetric->GetWeight()) &&
                 (eItalic == pFontMetric->GetItalic()) )
            {
                bNotSynthetic = true;
                break;
            }

            pFontMetric = pFontMetric->mpNext;
        }

        if ( !bNotSynthetic )
        {
            if (maMapStyleNotAvailable.isEmpty())
                const_cast<FontList*>(this)->maMapStyleNotAvailable = SvtResId(STR_SVT_FONTMAP_STYLENOTAVAILABLE);
            return maMapStyleNotAvailable;
        }
    }

    // Only Printer-Font?
    if ( nType == FontListFontNameType::PRINTER )
    {
        if (maMapPrinterOnly.isEmpty())
            const_cast<FontList*>(this)->maMapPrinterOnly = SvtResId(STR_SVT_FONTMAP_PRINTERONLY);
        return maMapPrinterOnly;
    }
    else
    {
        if (maMapBoth.isEmpty())
            const_cast<FontList*>(this)->maMapBoth = SvtResId(STR_SVT_FONTMAP_BOTH);
        return maMapBoth;
    }
}

namespace
{
    FontMetric makeMissing(ImplFontListFontMetric const * pFontNameInfo, const OUString &rName,
        FontWeight eWeight, FontItalic eItalic)
    {
        FontMetric aInfo;
        // if the fontname matches, we copy as much as possible
        if (pFontNameInfo)
        {
            aInfo = *pFontNameInfo;
            aInfo.SetStyleName(OUString());
        }

        aInfo.SetWeight(eWeight);
        aInfo.SetItalic(eItalic);

        //If this is a known but uninstalled symbol font which we can remap to
        //OpenSymbol then toggle its charset to be a symbol font
        if (ConvertChar::GetRecodeData(rName, "OpenSymbol"))
            aInfo.SetCharSet(RTL_TEXTENCODING_SYMBOL);

        return aInfo;
    }
}

FontMetric FontList::Get(const OUString& rName, const OUString& rStyleName) const
{
    ImplFontListNameInfo* pData = ImplFindByName( rName );
    ImplFontListFontMetric* pFontMetric = nullptr;
    ImplFontListFontMetric* pFontNameInfo = nullptr;
    if ( pData )
    {
        ImplFontListFontMetric* pSearchInfo = pData->mpFirst;
        pFontNameInfo = pSearchInfo;
        pSearchInfo = pData->mpFirst;
        while ( pSearchInfo )
        {
            if (rStyleName.equalsIgnoreAsciiCase(GetStyleName(*pSearchInfo)))
            {
                pFontMetric = pSearchInfo;
                break;
            }

            pSearchInfo = pSearchInfo->mpNext;
        }
    }

    // reproduce attributes if data could not be found
    FontMetric aInfo;
    if ( !pFontMetric )
    {
        FontWeight eWeight = WEIGHT_DONTKNOW;
        FontItalic eItalic = ITALIC_NONE;

        if ( rStyleName == maNormal )
        {
            eItalic = ITALIC_NONE;
            eWeight = WEIGHT_NORMAL;
        }
        else if ( rStyleName == maNormalItalic )
        {
            eItalic = ITALIC_NORMAL;
            eWeight = WEIGHT_NORMAL;
        }
        else if ( rStyleName == maBold )
        {
            eItalic = ITALIC_NONE;
            eWeight = WEIGHT_BOLD;
        }
        else if ( rStyleName == maBoldItalic )
        {
            eItalic = ITALIC_NORMAL;
            eWeight = WEIGHT_BOLD;
        }
        else if ( rStyleName == maLight )
        {
            eItalic = ITALIC_NONE;
            eWeight = WEIGHT_LIGHT;
        }
        else if ( rStyleName == maLightItalic )
        {
            eItalic = ITALIC_NORMAL;
            eWeight = WEIGHT_LIGHT;
        }
        else if ( rStyleName == maBlack )
        {
            eItalic = ITALIC_NONE;
            eWeight = WEIGHT_BLACK;
        }
        else if ( rStyleName == maBlackItalic )
        {
            eItalic = ITALIC_NORMAL;
            eWeight = WEIGHT_BLACK;
        }
        aInfo = makeMissing(pFontNameInfo, rName, eWeight, eItalic);
    }
    else
        aInfo = *pFontMetric;

    // set Fontname to keep FontAlias
    aInfo.SetFamilyName( rName );
    aInfo.SetStyleName( rStyleName );

    return aInfo;
}

FontMetric FontList::Get(const OUString& rName,
                        FontWeight eWeight, FontItalic eItalic) const
{
    ImplFontListNameInfo* pData = ImplFindByName( rName );
    ImplFontListFontMetric* pFontMetric = nullptr;
    ImplFontListFontMetric* pFontNameInfo = nullptr;
    if ( pData )
    {
        ImplFontListFontMetric* pSearchInfo = pData->mpFirst;
        pFontNameInfo = pSearchInfo;
        while ( pSearchInfo )
        {
            if ( (eWeight == pSearchInfo->GetWeight()) &&
                 (eItalic == pSearchInfo->GetItalic()) )
            {
                pFontMetric = pSearchInfo;
                break;
            }

            pSearchInfo = pSearchInfo->mpNext;
        }
    }

    // reproduce attributes if data could not be found
    FontMetric aInfo;
    if ( !pFontMetric )
        aInfo = makeMissing(pFontNameInfo, rName, eWeight, eItalic);
    else
        aInfo = *pFontMetric;

    // set Fontname to keep FontAlias
    aInfo.SetFamilyName( rName );

    return aInfo;
}

bool FontList::IsAvailable(const OUString& rName) const
{
    return (ImplFindByName( rName ) != nullptr);
}

const FontMetric& FontList::GetFontName(size_t const nFont) const
{
    DBG_ASSERT( nFont < GetFontNameCount(), "FontList::GetFontName(): nFont >= Count" );

    return *(m_Entries[nFont]->mpFirst);
}

sal_Handle FontList::GetFirstFontMetric(const OUString& rName) const
{
    ImplFontListNameInfo* pData = ImplFindByName( rName );
    if ( !pData )
        return nullptr;
    else
        return static_cast<sal_Handle>(pData->mpFirst);
}

sal_Handle FontList::GetNextFontMetric( sal_Handle hFontMetric )
{
    ImplFontListFontMetric* pInfo = static_cast<ImplFontListFontMetric*>(hFontMetric);
    return static_cast<sal_Handle>(pInfo->mpNext);
}

const FontMetric& FontList::GetFontMetric( sal_Handle hFontMetric )
{
    ImplFontListFontMetric* pInfo = static_cast<ImplFontListFontMetric*>(hFontMetric);
    return *pInfo;
}

const sal_IntPtr* FontList::GetSizeAry( const FontMetric& rInfo ) const
{
    // first delete Size-Array
    mpSizeAry.reset();

    // use standard sizes if no name
    if ( rInfo.GetFamilyName().isEmpty() )
        return aStdSizeAry;

    // first search fontname in order to use device from the matching font
    OutputDevice*           pDevice = mpDev;
    ImplFontListNameInfo*   pData = ImplFindByName( rInfo.GetFamilyName() );
    if ( pData )
        pDevice = pData->mpFirst->GetDevice();

    int nDevSizeCount = pDevice->GetDevFontSizeCount( rInfo );
    if ( !nDevSizeCount ||
         (pDevice->GetDevFontSize( rInfo, 0 ).Height() == 0) )
        return aStdSizeAry;

    MapMode aOldMapMode = pDevice->GetMapMode();
    MapMode aMap( MapUnit::Map10thInch, Point(), Fraction( 1, 72 ), Fraction( 1, 72 ) );
    pDevice->SetMapMode( aMap );

    int nRealCount = 0;
    long    nOldHeight = 0;
    mpSizeAry.reset(new sal_IntPtr[nDevSizeCount+1] );
    for (int i = 0; i < nDevSizeCount; ++i)
    {
        Size aSize = pDevice->GetDevFontSize( rInfo, i );
        if ( aSize.Height() != nOldHeight )
        {
            nOldHeight = aSize.Height();
            mpSizeAry[nRealCount] = nOldHeight;
            nRealCount++;
        }
    }
    mpSizeAry[nRealCount] = 0;

    pDevice->SetMapMode( aOldMapMode );
    return mpSizeAry.get();
}

struct ImplFSNameItem
{
    sal_Int32   mnSize;
    const char* mszUtf8Name;
};

static const ImplFSNameItem aImplSimplifiedChinese[] =
{
    {  50, "\xe5\x85\xab\xe5\x8f\xb7" },
    {  55, "\xe4\xb8\x83\xe5\x8f\xb7" },
    {  65, "\xe5\xb0\x8f\xe5\x85\xad" },
    {  75, "\xe5\x85\xad\xe5\x8f\xb7" },
    {  90, "\xe5\xb0\x8f\xe4\xba\x94" },
    { 105, "\xe4\xba\x94\xe5\x8f\xb7" },
    { 120, "\xe5\xb0\x8f\xe5\x9b\x9b" },
    { 140, "\xe5\x9b\x9b\xe5\x8f\xb7" },
    { 150, "\xe5\xb0\x8f\xe4\xb8\x89" },
    { 160, "\xe4\xb8\x89\xe5\x8f\xb7" },
    { 180, "\xe5\xb0\x8f\xe4\xba\x8c" },
    { 220, "\xe4\xba\x8c\xe5\x8f\xb7" },
    { 240, "\xe5\xb0\x8f\xe4\xb8\x80" },
    { 260, "\xe4\xb8\x80\xe5\x8f\xb7" },
    { 360, "\xe5\xb0\x8f\xe5\x88\x9d" },
    { 420, "\xe5\x88\x9d\xe5\x8f\xb7" }
};

FontSizeNames::FontSizeNames( LanguageType eLanguage )
{
    if ( eLanguage == LANGUAGE_DONTKNOW )
        eLanguage = Application::GetSettings().GetUILanguageTag().getLanguageType();
    if ( eLanguage == LANGUAGE_SYSTEM )
        eLanguage = MsLangId::getSystemUILanguage();

    if (MsLangId::isSimplifiedChinese(eLanguage))
    {
        // equivalent for traditional chinese disabled by popular request, #i89077#
        mpArray = aImplSimplifiedChinese;
        mnElem = SAL_N_ELEMENTS(aImplSimplifiedChinese);
    }
    else
    {
        mpArray = nullptr;
        mnElem = 0;
    }
}

sal_Int32 FontSizeNames::Name2Size( const OUString& rName ) const
{
    if ( mnElem )
    {
        OString aName(OUStringToOString(rName,
            RTL_TEXTENCODING_UTF8));

        // linear search is sufficient for this rare case
        for( long i = mnElem; --i >= 0; )
            if ( aName == mpArray[i].mszUtf8Name )
                return mpArray[i].mnSize;
    }

    return 0;
}

OUString FontSizeNames::Size2Name( sal_Int32 nValue ) const
{
    OUString aStr;

    // binary search
    for( long lower = 0, upper = mnElem - 1; lower <= upper; )
    {
        long mid = (upper + lower) >> 1;
        if ( nValue == mpArray[mid].mnSize )
        {
            aStr = OUString( mpArray[mid].mszUtf8Name, strlen(mpArray[mid].mszUtf8Name), RTL_TEXTENCODING_UTF8 );
            break;
        }
        else if ( nValue < mpArray[mid].mnSize )
            upper = mid - 1;
        else /* ( nValue > mpArray[mid].mnSize ) */
            lower = mid + 1;
    }

    return aStr;
}

OUString FontSizeNames::GetIndexName( sal_Int32 nIndex ) const
{
    OUString aStr;

    if ( nIndex < mnElem )
        aStr = OUString( mpArray[nIndex].mszUtf8Name, strlen(mpArray[nIndex].mszUtf8Name), RTL_TEXTENCODING_UTF8 );

    return aStr;
}

sal_Int32 FontSizeNames::GetIndexSize( sal_Int32 nIndex ) const
{
    if ( nIndex >= mnElem )
        return 0;
    return mpArray[nIndex].mnSize;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */