Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1408 insertions, 0 deletions

diff --git a/vcl/source/outdev/font.cxx b/vcl/source/outdev/font.cxx
new file mode 100644
index 000000000..071056e83
--- /dev/null
+++ b/vcl/source/outdev/font.cxx
@@ -0,0 +1,1408 @@
+/* -*- 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 <sal/config.h>
+
+#include <rtl/ustrbuf.hxx>
+#include <sal/log.hxx>
+#include <tools/debug.hxx>
+#include <i18nlangtag/mslangid.hxx>
+#include <i18nlangtag/lang.h>
+#include <unotools/configmgr.hxx>
+
+#include <vcl/event.hxx>
+#include <vcl/fontcharmap.hxx>
+#include <vcl/metaact.hxx>
+#include <vcl/metric.hxx>
+#include <vcl/print.hxx>
+#include <vcl/sysdata.hxx>
+#include <vcl/virdev.hxx>
+
+#include <window.h>
+
+#include <ImplLayoutArgs.hxx>
+#include <drawmode.hxx>
+#include <impfontcache.hxx>
+#include <font/DirectFontSubstitution.hxx>
+#include <font/PhysicalFontFaceCollection.hxx>
+#include <font/PhysicalFontCollection.hxx>
+#include <font/FeatureCollector.hxx>
+#include <impglyphitem.hxx>
+#include <sallayout.hxx>
+#include <salgdi.hxx>
+#include <svdata.hxx>
+
+#include <strings.hrc>
+
+void OutputDevice::SetFont( const vcl::Font& rNewFont )
+{
+    vcl::Font aFont = vcl::drawmode::GetFont(rNewFont, GetDrawMode(), GetSettings().GetStyleSettings());
+
+    if ( mpMetaFile )
+    {
+        mpMetaFile->AddAction( new MetaFontAction( aFont ) );
+        // the color and alignment actions don't belong here
+        // TODO: get rid of them without breaking anything...
+        mpMetaFile->AddAction( new MetaTextAlignAction( aFont.GetAlignment() ) );
+        mpMetaFile->AddAction( new MetaTextFillColorAction( aFont.GetFillColor(), !aFont.IsTransparent() ) );
+    }
+
+    if ( maFont.IsSameInstance( aFont ) )
+        return;
+
+    // Optimization MT/HDU: COL_TRANSPARENT means SetFont should ignore the font color,
+    // because SetTextColor() is used for this.
+    // #i28759# maTextColor might have been changed behind our back, commit then, too.
+    if( aFont.GetColor() != COL_TRANSPARENT
+    && (aFont.GetColor() != maFont.GetColor() || aFont.GetColor() != maTextColor ) )
+    {
+        maTextColor = aFont.GetColor();
+        mbInitTextColor = true;
+        if( mpMetaFile )
+            mpMetaFile->AddAction( new MetaTextColorAction( aFont.GetColor() ) );
+    }
+    maFont      = aFont;
+    mbNewFont   = true;
+
+    if( !mpAlphaVDev )
+        return;
+
+    // #i30463#
+    // Since SetFont might change the text color, apply that only
+    // selectively to alpha vdev (which normally paints opaque text
+    // with COL_BLACK)
+    if( aFont.GetColor() != COL_TRANSPARENT )
+    {
+        mpAlphaVDev->SetTextColor( COL_BLACK );
+        aFont.SetColor( COL_TRANSPARENT );
+    }
+
+    mpAlphaVDev->SetFont( aFont );
+}
+
+FontMetric OutputDevice::GetFontMetricFromCollection(int nDevFontIndex) const
+{
+    ImplInitFontList();
+
+    if (nDevFontIndex < GetFontFaceCollectionCount())
+        return FontMetric(*mpFontFaceCollection->Get(nDevFontIndex));
+
+    return FontMetric();
+}
+
+int OutputDevice::GetFontFaceCollectionCount() const
+{
+    if( !mpFontFaceCollection )
+    {
+        if (!mxFontCollection)
+        {
+            return 0;
+        }
+
+        mpFontFaceCollection = mxFontCollection->GetFontFaceCollection();
+
+        if (!mpFontFaceCollection->Count())
+        {
+            mpFontFaceCollection.reset();
+            return 0;
+        }
+    }
+    return mpFontFaceCollection->Count();
+}
+
+bool OutputDevice::IsFontAvailable( std::u16string_view rFontName ) const
+{
+    ImplInitFontList();
+    vcl::font::PhysicalFontFamily* pFound = mxFontCollection->FindFontFamily( rFontName );
+    return (pFound != nullptr);
+}
+
+bool OutputDevice::AddTempDevFont( const OUString& rFileURL, const OUString& rFontName )
+{
+    ImplInitFontList();
+
+    if( !mpGraphics && !AcquireGraphics() )
+        return false;
+    assert(mpGraphics);
+
+    bool bRC = mpGraphics->AddTempDevFont( mxFontCollection.get(), rFileURL, rFontName );
+    if( !bRC )
+        return false;
+
+    if( mpAlphaVDev )
+        mpAlphaVDev->AddTempDevFont( rFileURL, rFontName );
+
+    return true;
+}
+
+bool OutputDevice::GetFontFeatures(std::vector<vcl::font::Feature>& rFontFeatures) const
+{
+    if (!ImplNewFont())
+        return false;
+
+    LogicalFontInstance* pFontInstance = mpFontInstance.get();
+    if (!pFontInstance)
+        return false;
+
+    hb_font_t* pHbFont = pFontInstance->GetHbFont();
+    if (!pHbFont)
+        return false;
+
+    hb_face_t* pHbFace = hb_font_get_face(pHbFont);
+    if (!pHbFace)
+        return false;
+
+    const LanguageType eOfficeLanguage = Application::GetSettings().GetLanguageTag().getLanguageType();
+
+    vcl::font::FeatureCollector aFeatureCollector(pHbFace, rFontFeatures, eOfficeLanguage);
+    aFeatureCollector.collect();
+
+    return true;
+}
+
+FontMetric OutputDevice::GetFontMetric() const
+{
+    FontMetric aMetric;
+    if (!ImplNewFont())
+        return aMetric;
+
+    LogicalFontInstance* pFontInstance = mpFontInstance.get();
+    ImplFontMetricDataRef xFontMetric = pFontInstance->mxFontMetric;
+
+    // prepare metric
+    aMetric = maFont;
+
+    // set aMetric with info from font
+    aMetric.SetFamilyName( maFont.GetFamilyName() );
+    aMetric.SetStyleName( xFontMetric->GetStyleName() );
+    aMetric.SetFontSize( PixelToLogic( Size( xFontMetric->GetWidth(), xFontMetric->GetAscent() + xFontMetric->GetDescent() - xFontMetric->GetInternalLeading() ) ) );
+    aMetric.SetCharSet( xFontMetric->IsSymbolFont() ? RTL_TEXTENCODING_SYMBOL : RTL_TEXTENCODING_UNICODE );
+    aMetric.SetFamily( xFontMetric->GetFamilyType() );
+    aMetric.SetPitch( xFontMetric->GetPitch() );
+    aMetric.SetWeight( xFontMetric->GetWeight() );
+    aMetric.SetItalic( xFontMetric->GetItalic() );
+    aMetric.SetAlignment( TextAlign::ALIGN_TOP );
+    aMetric.SetWidthType( xFontMetric->GetWidthType() );
+    if ( pFontInstance->mnOwnOrientation )
+        aMetric.SetOrientation( pFontInstance->mnOwnOrientation );
+    else
+        aMetric.SetOrientation( xFontMetric->GetOrientation() );
+
+    // set remaining metric fields
+    aMetric.SetFullstopCenteredFlag( xFontMetric->IsFullstopCentered() );
+    aMetric.SetBulletOffset( xFontMetric->GetBulletOffset() );
+    aMetric.SetAscent( ImplDevicePixelToLogicHeight( xFontMetric->GetAscent() + mnEmphasisAscent ) );
+    aMetric.SetDescent( ImplDevicePixelToLogicHeight( xFontMetric->GetDescent() + mnEmphasisDescent ) );
+    aMetric.SetInternalLeading( ImplDevicePixelToLogicHeight( xFontMetric->GetInternalLeading() + mnEmphasisAscent ) );
+    // OutputDevice has its own external leading function due to #i60945#
+    aMetric.SetExternalLeading( ImplDevicePixelToLogicHeight( GetFontExtLeading() ) );
+    aMetric.SetLineHeight( ImplDevicePixelToLogicHeight( xFontMetric->GetAscent() + xFontMetric->GetDescent() + mnEmphasisAscent + mnEmphasisDescent ) );
+    aMetric.SetSlant( ImplDevicePixelToLogicHeight( xFontMetric->GetSlant() ) );
+    aMetric.SetHangingBaseline( ImplDevicePixelToLogicHeight( xFontMetric->GetHangingBaseline() ) );
+
+    // get miscellaneous data
+    aMetric.SetQuality( xFontMetric->GetQuality() );
+
+    SAL_INFO("vcl.gdi.fontmetric", "OutputDevice::GetFontMetric:" << aMetric);
+
+    xFontMetric = nullptr;
+
+    return aMetric;
+}
+
+FontMetric OutputDevice::GetFontMetric( const vcl::Font& rFont ) const
+{
+    // select font, query metrics, select original font again
+    vcl::Font aOldFont = GetFont();
+    const_cast<OutputDevice*>(this)->SetFont( rFont );
+    FontMetric aMetric( GetFontMetric() );
+    const_cast<OutputDevice*>(this)->SetFont( aOldFont );
+    return aMetric;
+}
+
+bool OutputDevice::GetFontCharMap( FontCharMapRef& rxFontCharMap ) const
+{
+    if (!InitFont())
+        return false;
+
+    FontCharMapRef xFontCharMap ( mpGraphics->GetFontCharMap() );
+    if (!xFontCharMap.is())
+    {
+        FontCharMapRef xDefaultMap( new FontCharMap() );
+        rxFontCharMap = xDefaultMap;
+    }
+    else
+        rxFontCharMap = xFontCharMap;
+
+    return !rxFontCharMap->IsDefaultMap();
+}
+
+bool OutputDevice::GetFontCapabilities( vcl::FontCapabilities& rFontCapabilities ) const
+{
+    if (!InitFont())
+        return false;
+    return mpGraphics->GetFontCapabilities(rFontCapabilities);
+}
+
+void OutputDevice::ImplGetEmphasisMark( tools::PolyPolygon& rPolyPoly, bool& rPolyLine,
+                                        tools::Rectangle& rRect1, tools::Rectangle& rRect2,
+                                        tools::Long& rYOff, tools::Long& rWidth,
+                                        FontEmphasisMark eEmphasis,
+                                        tools::Long nHeight )
+{
+    static const PolyFlags aAccentPolyFlags[24] =
+    {
+        PolyFlags::Normal, PolyFlags::Control, PolyFlags::Control,
+        PolyFlags::Normal, PolyFlags::Control, PolyFlags::Control,
+        PolyFlags::Normal, PolyFlags::Control, PolyFlags::Control,
+        PolyFlags::Normal, PolyFlags::Control, PolyFlags::Control,
+        PolyFlags::Normal, PolyFlags::Control, PolyFlags::Control,
+        PolyFlags::Normal, PolyFlags::Control, PolyFlags::Control,
+        PolyFlags::Normal, PolyFlags::Normal,  PolyFlags::Control,
+        PolyFlags::Normal, PolyFlags::Control, PolyFlags::Control
+    };
+
+    static const Point aAccentPos[24] =
+    {
+        {  78,    0 },
+        { 348,   79 },
+        { 599,  235 },
+        { 843,  469 },
+        { 938,  574 },
+        { 990,  669 },
+        { 990,  773 },
+        { 990,  843 },
+        { 964,  895 },
+        { 921,  947 },
+        { 886,  982 },
+        { 860,  999 },
+        { 825,  999 },
+        { 764,  999 },
+        { 721,  964 },
+        { 686,  895 },
+        { 625,  791 },
+        { 556,  660 },
+        { 469,  504 },
+        { 400,  400 },
+        { 261,  252 },
+        {  61,   61 },
+        {   0,   27 },
+        {   9,    0 }
+    };
+
+    rWidth      = 0;
+    rYOff       = 0;
+    rPolyLine   = false;
+
+    if ( !nHeight )
+        return;
+
+    FontEmphasisMark    nEmphasisStyle = eEmphasis & FontEmphasisMark::Style;
+    tools::Long                nDotSize = 0;
+    switch ( nEmphasisStyle )
+    {
+        case FontEmphasisMark::Dot:
+            // Dot has 55% of the height
+            nDotSize = (nHeight*550)/1000;
+            if ( !nDotSize )
+                nDotSize = 1;
+            if ( nDotSize <= 2 )
+                rRect1 = tools::Rectangle( Point(), Size( nDotSize, nDotSize ) );
+            else
+            {
+                tools::Long nRad = nDotSize/2;
+                tools::Polygon aPoly( Point( nRad, nRad ), nRad, nRad );
+                rPolyPoly.Insert( aPoly );
+            }
+            rYOff = ((nHeight*250)/1000)/2; // Center to the another EmphasisMarks
+            rWidth = nDotSize;
+            break;
+
+        case FontEmphasisMark::Circle:
+            // Dot has 80% of the height
+            nDotSize = (nHeight*800)/1000;
+            if ( !nDotSize )
+                nDotSize = 1;
+            if ( nDotSize <= 2 )
+                rRect1 = tools::Rectangle( Point(), Size( nDotSize, nDotSize ) );
+            else
+            {
+                tools::Long nRad = nDotSize/2;
+                tools::Polygon aPoly( Point( nRad, nRad ), nRad, nRad );
+                rPolyPoly.Insert( aPoly );
+                // BorderWidth is 15%
+                tools::Long nBorder = (nDotSize*150)/1000;
+                if ( nBorder <= 1 )
+                    rPolyLine = true;
+                else
+                {
+                    tools::Polygon aPoly2( Point( nRad, nRad ),
+                                           nRad-nBorder, nRad-nBorder );
+                    rPolyPoly.Insert( aPoly2 );
+                }
+            }
+            rWidth = nDotSize;
+            break;
+
+        case FontEmphasisMark::Disc:
+            // Dot has 80% of the height
+            nDotSize = (nHeight*800)/1000;
+            if ( !nDotSize )
+                nDotSize = 1;
+            if ( nDotSize <= 2 )
+                rRect1 = tools::Rectangle( Point(), Size( nDotSize, nDotSize ) );
+            else
+            {
+                tools::Long nRad = nDotSize/2;
+                tools::Polygon aPoly( Point( nRad, nRad ), nRad, nRad );
+                rPolyPoly.Insert( aPoly );
+            }
+            rWidth = nDotSize;
+            break;
+
+        case FontEmphasisMark::Accent:
+            // Dot has 80% of the height
+            nDotSize = (nHeight*800)/1000;
+            if ( !nDotSize )
+                nDotSize = 1;
+            if ( nDotSize <= 2 )
+            {
+                if ( nDotSize == 1 )
+                {
+                    rRect1 = tools::Rectangle( Point(), Size( nDotSize, nDotSize ) );
+                    rWidth = nDotSize;
+                }
+                else
+                {
+                    rRect1 = tools::Rectangle( Point(), Size( 1, 1 ) );
+                    rRect2 = tools::Rectangle( Point( 1, 1 ), Size( 1, 1 ) );
+                }
+            }
+            else
+            {
+                tools::Polygon aPoly( SAL_N_ELEMENTS(aAccentPos), aAccentPos,
+                                      aAccentPolyFlags );
+                double dScale = static_cast<double>(nDotSize)/1000.0;
+                aPoly.Scale( dScale, dScale );
+                tools::Polygon aTemp;
+                aPoly.AdaptiveSubdivide( aTemp );
+                tools::Rectangle aBoundRect = aTemp.GetBoundRect();
+                rWidth = aBoundRect.GetWidth();
+                nDotSize = aBoundRect.GetHeight();
+                rPolyPoly.Insert( aTemp );
+            }
+            break;
+        default: break;
+    }
+
+    // calculate position
+    tools::Long nOffY = 1+(mnDPIY/300); // one visible pixel space
+    tools::Long nSpaceY = nHeight-nDotSize;
+    if ( nSpaceY >= nOffY*2 )
+        rYOff += nOffY;
+    if ( !(eEmphasis & FontEmphasisMark::PosBelow) )
+        rYOff += nDotSize;
+}
+
+FontEmphasisMark OutputDevice::ImplGetEmphasisMarkStyle( const vcl::Font& rFont )
+{
+    FontEmphasisMark nEmphasisMark = rFont.GetEmphasisMark();
+
+    // If no Position is set, then calculate the default position, which
+    // depends on the language
+    if ( !(nEmphasisMark & (FontEmphasisMark::PosAbove | FontEmphasisMark::PosBelow)) )
+    {
+        LanguageType eLang = rFont.GetLanguage();
+        // In Chinese Simplified the EmphasisMarks are below/left
+        if (MsLangId::isSimplifiedChinese(eLang))
+            nEmphasisMark |= FontEmphasisMark::PosBelow;
+        else
+        {
+            eLang = rFont.GetCJKContextLanguage();
+            // In Chinese Simplified the EmphasisMarks are below/left
+            if (MsLangId::isSimplifiedChinese(eLang))
+                nEmphasisMark |= FontEmphasisMark::PosBelow;
+            else
+                nEmphasisMark |= FontEmphasisMark::PosAbove;
+        }
+    }
+
+    return nEmphasisMark;
+}
+
+tools::Long OutputDevice::GetFontExtLeading() const
+{
+    return mpFontInstance->mxFontMetric->GetExternalLeading();
+}
+
+void OutputDevice::ImplClearFontData( const bool bNewFontLists )
+{
+    // the currently selected logical font is no longer needed
+    mpFontInstance.clear();
+
+    mbInitFont = true;
+    mbNewFont = true;
+
+    if ( bNewFontLists )
+    {
+        mpFontFaceCollection.reset();
+
+        // release all physically selected fonts on this device
+        if( AcquireGraphics() )
+            mpGraphics->ReleaseFonts();
+    }
+
+    ImplSVData* pSVData = ImplGetSVData();
+
+    if (mxFontCache && mxFontCache != pSVData->maGDIData.mxScreenFontCache)
+        mxFontCache->Invalidate();
+
+    if (bNewFontLists && AcquireGraphics())
+    {
+        if (mxFontCollection && mxFontCollection != pSVData->maGDIData.mxScreenFontList)
+            mxFontCollection->Clear();
+    }
+}
+
+void OutputDevice::RefreshFontData( const bool bNewFontLists )
+{
+    ImplRefreshFontData( bNewFontLists );
+}
+
+void OutputDevice::ImplRefreshFontData( const bool bNewFontLists )
+{
+    if (bNewFontLists && AcquireGraphics())
+        mpGraphics->GetDevFontList( mxFontCollection.get() );
+}
+
+void OutputDevice::ImplUpdateFontData()
+{
+    ImplClearFontData( true/*bNewFontLists*/ );
+    ImplRefreshFontData( true/*bNewFontLists*/ );
+}
+
+void OutputDevice::ImplClearAllFontData(bool bNewFontLists)
+{
+    ImplSVData* pSVData = ImplGetSVData();
+
+    ImplUpdateFontDataForAllFrames( &OutputDevice::ImplClearFontData, bNewFontLists );
+
+    // clear global font lists to have them updated
+    pSVData->maGDIData.mxScreenFontCache->Invalidate();
+    if ( !bNewFontLists )
+        return;
+
+    pSVData->maGDIData.mxScreenFontList->Clear();
+    vcl::Window * pFrame = pSVData->maFrameData.mpFirstFrame;
+    if ( pFrame )
+    {
+        if ( pFrame->GetOutDev()->AcquireGraphics() )
+        {
+            OutputDevice *pDevice = pFrame->GetOutDev();
+            pDevice->mpGraphics->ClearDevFontCache();
+            pDevice->mpGraphics->GetDevFontList(pFrame->mpWindowImpl->mpFrameData->mxFontCollection.get());
+        }
+    }
+}
+
+void OutputDevice::ImplRefreshAllFontData(bool bNewFontLists)
+{
+    ImplUpdateFontDataForAllFrames( &OutputDevice::ImplRefreshFontData, bNewFontLists );
+}
+
+void OutputDevice::ImplUpdateAllFontData(bool bNewFontLists)
+{
+    OutputDevice::ImplClearAllFontData(bNewFontLists);
+    OutputDevice::ImplRefreshAllFontData(bNewFontLists);
+}
+
+void OutputDevice::ImplUpdateFontDataForAllFrames( const FontUpdateHandler_t pHdl, const bool bNewFontLists )
+{
+    ImplSVData* const pSVData = ImplGetSVData();
+
+    // update all windows
+    vcl::Window* pFrame = pSVData->maFrameData.mpFirstFrame;
+    while ( pFrame )
+    {
+        ( pFrame->GetOutDev()->*pHdl )( bNewFontLists );
+
+        vcl::Window* pSysWin = pFrame->mpWindowImpl->mpFrameData->mpFirstOverlap;
+        while ( pSysWin )
+        {
+            ( pSysWin->GetOutDev()->*pHdl )( bNewFontLists );
+            pSysWin = pSysWin->mpWindowImpl->mpNextOverlap;
+        }
+
+        pFrame = pFrame->mpWindowImpl->mpFrameData->mpNextFrame;
+    }
+
+    // update all virtual devices
+    VirtualDevice* pVirDev = pSVData->maGDIData.mpFirstVirDev;
+    while ( pVirDev )
+    {
+        ( pVirDev->*pHdl )( bNewFontLists );
+        pVirDev = pVirDev->mpNext;
+    }
+
+    // update all printers
+    Printer* pPrinter = pSVData->maGDIData.mpFirstPrinter;
+    while ( pPrinter )
+    {
+        ( pPrinter->*pHdl )( bNewFontLists );
+        pPrinter = pPrinter->mpNext;
+    }
+}
+
+void OutputDevice::BeginFontSubstitution()
+{
+    ImplSVData* pSVData = ImplGetSVData();
+    pSVData->maGDIData.mbFontSubChanged = false;
+}
+
+void OutputDevice::EndFontSubstitution()
+{
+    ImplSVData* pSVData = ImplGetSVData();
+    if ( pSVData->maGDIData.mbFontSubChanged )
+    {
+        ImplUpdateAllFontData( false );
+
+        DataChangedEvent aDCEvt( DataChangedEventType::FONTSUBSTITUTION );
+        Application::ImplCallEventListenersApplicationDataChanged(&aDCEvt);
+        Application::NotifyAllWindows( aDCEvt );
+        pSVData->maGDIData.mbFontSubChanged = false;
+    }
+}
+
+void OutputDevice::AddFontSubstitute( const OUString& rFontName,
+                                      const OUString& rReplaceFontName,
+                                      AddFontSubstituteFlags nFlags )
+{
+    vcl::font::DirectFontSubstitution*& rpSubst = ImplGetSVData()->maGDIData.mpDirectFontSubst;
+    if( !rpSubst )
+        rpSubst = new vcl::font::DirectFontSubstitution;
+    rpSubst->AddFontSubstitute( rFontName, rReplaceFontName, nFlags );
+    ImplGetSVData()->maGDIData.mbFontSubChanged = true;
+}
+
+void OutputDevice::RemoveFontsSubstitute()
+{
+    vcl::font::DirectFontSubstitution* pSubst = ImplGetSVData()->maGDIData.mpDirectFontSubst;
+    if( pSubst )
+        pSubst->RemoveFontsSubstitute();
+}
+
+//hidpi TODO: This routine has hard-coded font-sizes that break places such as DialControl
+vcl::Font OutputDevice::GetDefaultFont( DefaultFontType nType, LanguageType eLang,
+                                        GetDefaultFontFlags nFlags, const OutputDevice* pOutDev )
+{
+    if (!pOutDev && !utl::ConfigManager::IsFuzzing()) // default is NULL
+        pOutDev = Application::GetDefaultDevice();
+
+    OUString aSearch;
+    if (!utl::ConfigManager::IsFuzzing())
+    {
+        LanguageTag aLanguageTag(
+                ( eLang == LANGUAGE_NONE || eLang == LANGUAGE_SYSTEM || eLang == LANGUAGE_DONTKNOW ) ?
+                Application::GetSettings().GetUILanguageTag() :
+                LanguageTag( eLang ));
+
+        utl::DefaultFontConfiguration& rDefaults = utl::DefaultFontConfiguration::get();
+        OUString aDefault = rDefaults.getDefaultFont( aLanguageTag, nType );
+
+        if( !aDefault.isEmpty() )
+            aSearch = aDefault;
+        else
+            aSearch = rDefaults.getUserInterfaceFont( aLanguageTag ); // use the UI font as a fallback
+    }
+    else
+        aSearch = "Liberation Serif";
+
+    vcl::Font aFont;
+    aFont.SetPitch( PITCH_VARIABLE );
+
+    switch ( nType )
+    {
+        case DefaultFontType::SANS_UNICODE:
+        case DefaultFontType::UI_SANS:
+            aFont.SetFamily( FAMILY_SWISS );
+            break;
+
+        case DefaultFontType::SANS:
+        case DefaultFontType::LATIN_HEADING:
+        case DefaultFontType::LATIN_SPREADSHEET:
+        case DefaultFontType::LATIN_DISPLAY:
+            aFont.SetFamily( FAMILY_SWISS );
+            break;
+
+        case DefaultFontType::SERIF:
+        case DefaultFontType::LATIN_TEXT:
+        case DefaultFontType::LATIN_PRESENTATION:
+            aFont.SetFamily( FAMILY_ROMAN );
+            break;
+
+        case DefaultFontType::FIXED:
+        case DefaultFontType::LATIN_FIXED:
+        case DefaultFontType::UI_FIXED:
+            aFont.SetPitch( PITCH_FIXED );
+            aFont.SetFamily( FAMILY_MODERN );
+            break;
+
+        case DefaultFontType::SYMBOL:
+            aFont.SetCharSet( RTL_TEXTENCODING_SYMBOL );
+            break;
+
+        case DefaultFontType::CJK_TEXT:
+        case DefaultFontType::CJK_PRESENTATION:
+        case DefaultFontType::CJK_SPREADSHEET:
+        case DefaultFontType::CJK_HEADING:
+        case DefaultFontType::CJK_DISPLAY:
+            aFont.SetFamily( FAMILY_SYSTEM ); // don't care, but don't use font subst config later...
+            break;
+
+        case DefaultFontType::CTL_TEXT:
+        case DefaultFontType::CTL_PRESENTATION:
+        case DefaultFontType::CTL_SPREADSHEET:
+        case DefaultFontType::CTL_HEADING:
+        case DefaultFontType::CTL_DISPLAY:
+            aFont.SetFamily( FAMILY_SYSTEM ); // don't care, but don't use font subst config later...
+            break;
+    }
+
+    if ( !aSearch.isEmpty() )
+    {
+        aFont.SetFontHeight( 12 ); // corresponds to nDefaultHeight
+        aFont.SetWeight( WEIGHT_NORMAL );
+        aFont.SetLanguage( eLang );
+
+        if ( aFont.GetCharSet() == RTL_TEXTENCODING_DONTKNOW )
+            aFont.SetCharSet( osl_getThreadTextEncoding() );
+
+        // Should we only return available fonts on the given device
+        if ( pOutDev )
+        {
+            pOutDev->ImplInitFontList();
+
+            // Search Font in the FontList
+            OUString      aName;
+            sal_Int32     nIndex = 0;
+            do
+            {
+                vcl::font::PhysicalFontFamily* pFontFamily = pOutDev->mxFontCollection->FindFontFamily( GetNextFontToken( aSearch, nIndex ) );
+                if( pFontFamily )
+                {
+                    AddTokenFontName( aName, pFontFamily->GetFamilyName() );
+                    if( nFlags & GetDefaultFontFlags::OnlyOne )
+                        break;
+                }
+            }
+            while ( nIndex != -1 );
+            aFont.SetFamilyName( aName );
+        }
+
+        // No Name, then set all names
+        if ( aFont.GetFamilyName().isEmpty() )
+        {
+            if ( nFlags & GetDefaultFontFlags::OnlyOne )
+            {
+                if( !pOutDev )
+                {
+                    SAL_WARN_IF(!utl::ConfigManager::IsFuzzing(), "vcl.gdi", "No default window has been set for the application - we really shouldn't be able to get here");
+                    aFont.SetFamilyName( aSearch.getToken( 0, ';' ) );
+                }
+                else
+                {
+                    pOutDev->ImplInitFontList();
+
+                    aFont.SetFamilyName( aSearch );
+
+                    // convert to pixel height
+                    Size aSize = pOutDev->ImplLogicToDevicePixel( aFont.GetFontSize() );
+                    if ( !aSize.Height() )
+                    {
+                        // use default pixel height only when logical height is zero
+                        if ( aFont.GetFontHeight() )
+                            aSize.setHeight( 1 );
+                        else
+                            aSize.setHeight( (12*pOutDev->mnDPIY)/72 );
+                    }
+
+                    // use default width only when logical width is zero
+                    if( (0 == aSize.Width()) && (0 != aFont.GetFontSize().Width()) )
+                        aSize.setWidth( 1 );
+
+                    // get the name of the first available font
+                    float fExactHeight = static_cast<float>(aSize.Height());
+                    rtl::Reference<LogicalFontInstance> pFontInstance = pOutDev->mxFontCache->GetFontInstance( pOutDev->mxFontCollection.get(), aFont, aSize, fExactHeight );
+                    if (pFontInstance)
+                    {
+                        assert(pFontInstance->GetFontFace());
+                        aFont.SetFamilyName(pFontInstance->GetFontFace()->GetFamilyName());
+                    }
+                }
+            }
+            else
+                aFont.SetFamilyName( aSearch );
+        }
+    }
+
+#if OSL_DEBUG_LEVEL > 2
+    const char* s = "SANS_UNKNOWN";
+    switch ( nType )
+    {
+    case DefaultFontType::SANS_UNICODE: s = "SANS_UNICODE"; break;
+    case DefaultFontType::UI_SANS: s = "UI_SANS"; break;
+
+    case DefaultFontType::SANS: s = "SANS"; break;
+    case DefaultFontType::LATIN_HEADING: s = "LATIN_HEADING"; break;
+    case DefaultFontType::LATIN_SPREADSHEET: s = "LATIN_SPREADSHEET"; break;
+    case DefaultFontType::LATIN_DISPLAY: s = "LATIN_DISPLAY"; break;
+
+    case DefaultFontType::SERIF: s = "SERIF"; break;
+    case DefaultFontType::LATIN_TEXT: s = "LATIN_TEXT"; break;
+    case DefaultFontType::LATIN_PRESENTATION: s = "LATIN_PRESENTATION"; break;
+
+    case DefaultFontType::FIXED: s = "FIXED"; break;
+    case DefaultFontType::LATIN_FIXED: s = "LATIN_FIXED"; break;
+    case DefaultFontType::UI_FIXED: s = "UI_FIXED"; break;
+
+    case DefaultFontType::SYMBOL: s = "SYMBOL"; break;
+
+    case DefaultFontType::CJK_TEXT: s = "CJK_TEXT"; break;
+    case DefaultFontType::CJK_PRESENTATION: s = "CJK_PRESENTATION"; break;
+    case DefaultFontType::CJK_SPREADSHEET: s = "CJK_SPREADSHEET"; break;
+    case DefaultFontType::CJK_HEADING: s = "CJK_HEADING"; break;
+    case DefaultFontType::CJK_DISPLAY: s = "CJK_DISPLAY"; break;
+
+    case DefaultFontType::CTL_TEXT: s = "CTL_TEXT"; break;
+    case DefaultFontType::CTL_PRESENTATION: s = "CTL_PRESENTATION"; break;
+    case DefaultFontType::CTL_SPREADSHEET: s = "CTL_SPREADSHEET"; break;
+    case DefaultFontType::CTL_HEADING: s = "CTL_HEADING"; break;
+    case DefaultFontType::CTL_DISPLAY: s = "CTL_DISPLAY"; break;
+    }
+    SAL_INFO("vcl.gdi",
+             "OutputDevice::GetDefaultFont() Type=" << s
+             << " lang=" << eLang
+             << " flags=" << static_cast<int>(nFlags)
+             << " family=\"" << aFont.GetFamilyName() << "\"");
+#endif
+
+    return aFont;
+}
+
+void OutputDevice::ImplInitFontList() const
+{
+    if( mxFontCollection->Count() )
+        return;
+
+    if( !(mpGraphics || AcquireGraphics()) )
+        return;
+    assert(mpGraphics);
+
+    SAL_INFO( "vcl.gdi", "OutputDevice::ImplInitFontList()" );
+    mpGraphics->GetDevFontList(mxFontCollection.get());
+
+    // There is absolutely no way there should be no fonts available on the device
+    if( !mxFontCollection->Count() )
+    {
+        OUString aError( "Application error: no fonts and no vcl resource found on your system" );
+        OUString aResStr(VclResId(SV_ACCESSERROR_NO_FONTS));
+        if (!aResStr.isEmpty())
+            aError = aResStr;
+        Application::Abort(aError);
+    }
+}
+
+bool OutputDevice::InitFont() const
+{
+    DBG_TESTSOLARMUTEX();
+
+    if (!ImplNewFont())
+        return false;
+    if (!mpFontInstance)
+        return false;
+    if (!mpGraphics)
+    {
+        if (!AcquireGraphics())
+            return false;
+    }
+    else if (!mbInitFont)
+        return true;
+
+    assert(mpGraphics);
+    mpGraphics->SetFont(mpFontInstance.get(), 0);
+    mbInitFont = false;
+    return true;
+}
+
+const LogicalFontInstance* OutputDevice::GetFontInstance() const
+{
+    if (!InitFont())
+        return nullptr;
+    return mpFontInstance.get();
+}
+
+bool OutputDevice::ImplNewFont() const
+{
+    DBG_TESTSOLARMUTEX();
+
+    if ( !mbNewFont )
+        return true;
+
+    // we need a graphics
+    if ( !mpGraphics && !AcquireGraphics() )
+    {
+        SAL_WARN("vcl.gdi", "OutputDevice::ImplNewFont(): no Graphics, no Font");
+        return false;
+    }
+    assert(mpGraphics);
+
+    ImplInitFontList();
+
+    // convert to pixel height
+    // TODO: replace integer based aSize completely with subpixel accurate type
+    float fExactHeight = ImplFloatLogicHeightToDevicePixel( static_cast<float>(maFont.GetFontHeight()) );
+    Size aSize = ImplLogicToDevicePixel( maFont.GetFontSize() );
+    if ( !aSize.Height() )
+    {
+        // use default pixel height only when logical height is zero
+        if ( maFont.GetFontSize().Height() )
+            aSize.setHeight( 1 );
+        else
+            aSize.setHeight( (12*mnDPIY)/72 );
+        fExactHeight =  static_cast<float>(aSize.Height());
+    }
+
+    // select the default width only when logical width is zero
+    if( (0 == aSize.Width()) && (0 != maFont.GetFontSize().Width()) )
+        aSize.setWidth( 1 );
+
+    // decide if antialiasing is appropriate
+    bool bNonAntialiased(GetAntialiasing() & AntialiasingFlags::DisableText);
+    if (!utl::ConfigManager::IsFuzzing())
+    {
+        const StyleSettings& rStyleSettings = GetSettings().GetStyleSettings();
+        bNonAntialiased |= bool(rStyleSettings.GetDisplayOptions() & DisplayOptions::AADisable);
+        bNonAntialiased |= (int(rStyleSettings.GetAntialiasingMinPixelHeight()) > maFont.GetFontSize().Height());
+    }
+
+    // get font entry
+    rtl::Reference<LogicalFontInstance> pOldFontInstance = mpFontInstance;
+    mpFontInstance = mxFontCache->GetFontInstance(mxFontCollection.get(), maFont, aSize, fExactHeight, bNonAntialiased);
+    const bool bNewFontInstance = pOldFontInstance.get() != mpFontInstance.get();
+    pOldFontInstance.clear();
+
+    LogicalFontInstance* pFontInstance = mpFontInstance.get();
+
+    if (!pFontInstance)
+    {
+        SAL_WARN("vcl.gdi", "OutputDevice::ImplNewFont(): no LogicalFontInstance, no Font");
+        return false;
+    }
+
+    // mark when lower layers need to get involved
+    mbNewFont = false;
+    if( bNewFontInstance )
+        mbInitFont = true;
+
+    // select font when it has not been initialized yet
+    if (!pFontInstance->mbInit && InitFont())
+    {
+        // get metric data from device layers
+        pFontInstance->mbInit = true;
+
+        pFontInstance->mxFontMetric->SetOrientation( mpFontInstance->GetFontSelectPattern().mnOrientation );
+        mpGraphics->GetFontMetric( pFontInstance->mxFontMetric, 0 );
+
+        pFontInstance->mxFontMetric->ImplInitTextLineSize( this );
+        pFontInstance->mxFontMetric->ImplInitAboveTextLineSize();
+        pFontInstance->mxFontMetric->ImplInitFlags( this );
+
+        pFontInstance->mnLineHeight = pFontInstance->mxFontMetric->GetAscent() + pFontInstance->mxFontMetric->GetDescent();
+
+        SetFontOrientation( pFontInstance );
+    }
+
+    // calculate EmphasisArea
+    mnEmphasisAscent = 0;
+    mnEmphasisDescent = 0;
+    if ( maFont.GetEmphasisMark() & FontEmphasisMark::Style )
+    {
+        FontEmphasisMark    nEmphasisMark = ImplGetEmphasisMarkStyle( maFont );
+        tools::Long                nEmphasisHeight = (pFontInstance->mnLineHeight*250)/1000;
+        if ( nEmphasisHeight < 1 )
+            nEmphasisHeight = 1;
+        if ( nEmphasisMark & FontEmphasisMark::PosBelow )
+            mnEmphasisDescent = nEmphasisHeight;
+        else
+            mnEmphasisAscent = nEmphasisHeight;
+    }
+
+    // calculate text offset depending on TextAlignment
+    TextAlign eAlign = maFont.GetAlignment();
+    if ( eAlign == ALIGN_BASELINE )
+    {
+        mnTextOffX = 0;
+        mnTextOffY = 0;
+    }
+    else if ( eAlign == ALIGN_TOP )
+    {
+        mnTextOffX = 0;
+        mnTextOffY = +pFontInstance->mxFontMetric->GetAscent() + mnEmphasisAscent;
+        if ( pFontInstance->mnOrientation )
+        {
+            Point aOriginPt(0, 0);
+            aOriginPt.RotateAround( mnTextOffX, mnTextOffY, pFontInstance->mnOrientation );
+        }
+    }
+    else // eAlign == ALIGN_BOTTOM
+    {
+        mnTextOffX = 0;
+        mnTextOffY = -pFontInstance->mxFontMetric->GetDescent() + mnEmphasisDescent;
+        if ( pFontInstance->mnOrientation )
+        {
+            Point aOriginPt(0, 0);
+            aOriginPt.RotateAround( mnTextOffX, mnTextOffY, pFontInstance->mnOrientation );
+        }
+    }
+
+    mbTextLines     = ((maFont.GetUnderline() != LINESTYLE_NONE) && (maFont.GetUnderline() != LINESTYLE_DONTKNOW)) ||
+                      ((maFont.GetOverline()  != LINESTYLE_NONE) && (maFont.GetOverline()  != LINESTYLE_DONTKNOW)) ||
+                      ((maFont.GetStrikeout() != STRIKEOUT_NONE) && (maFont.GetStrikeout() != STRIKEOUT_DONTKNOW));
+    mbTextSpecial   = maFont.IsShadow() || maFont.IsOutline() ||
+                      (maFont.GetRelief() != FontRelief::NONE);
+
+
+    bool bRet = true;
+
+    // #95414# fix for OLE objects which use scale factors very creatively
+    if (mbMap && !aSize.Width())
+        bRet = AttemptOLEFontScaleFix(const_cast<vcl::Font&>(maFont), aSize.Height());
+
+    return bRet;
+}
+
+bool OutputDevice::AttemptOLEFontScaleFix(vcl::Font& rFont, tools::Long nHeight) const
+{
+    const float fDenominator = static_cast<float>(maMapRes.mnMapScNumY) * maMapRes.mnMapScDenomX;
+    if (fDenominator == 0.0)
+        return false;
+    const float fNumerator = static_cast<float>(maMapRes.mnMapScNumX) * maMapRes.mnMapScDenomY;
+    float fStretch = fNumerator / fDenominator;
+    int nOrigWidth = mpFontInstance->mxFontMetric->GetWidth();
+    int nNewWidth = static_cast<int>(nOrigWidth * fStretch + 0.5);
+    bool bRet = true;
+    if (nNewWidth != nOrigWidth && nNewWidth != 0)
+    {
+        Size aOrigSize = rFont.GetFontSize();
+        rFont.SetFontSize(Size(nNewWidth, nHeight));
+        mbMap = false;
+        mbNewFont = true;
+        bRet = ImplNewFont();  // recurse once using stretched width
+        mbMap = true;
+        rFont.SetFontSize(aOrigSize);
+    }
+    return bRet;
+}
+
+void OutputDevice::SetFontOrientation( LogicalFontInstance* const pFontInstance ) const
+{
+    if( pFontInstance->GetFontSelectPattern().mnOrientation && !pFontInstance->mxFontMetric->GetOrientation() )
+    {
+        pFontInstance->mnOwnOrientation = pFontInstance->GetFontSelectPattern().mnOrientation;
+        pFontInstance->mnOrientation = pFontInstance->mnOwnOrientation;
+    }
+    else
+    {
+        pFontInstance->mnOrientation = pFontInstance->mxFontMetric->GetOrientation();
+    }
+}
+
+void OutputDevice::ImplDrawEmphasisMark( tools::Long nBaseX, tools::Long nX, tools::Long nY,
+                                         const tools::PolyPolygon& rPolyPoly, bool bPolyLine,
+                                         const tools::Rectangle& rRect1, const tools::Rectangle& rRect2 )
+{
+    if( IsRTLEnabled() )
+        nX = nBaseX - (nX - nBaseX - 1);
+
+    nX -= mnOutOffX;
+    nY -= mnOutOffY;
+
+    if ( rPolyPoly.Count() )
+    {
+        if ( bPolyLine )
+        {
+            tools::Polygon aPoly = rPolyPoly.GetObject( 0 );
+            aPoly.Move( nX, nY );
+            DrawPolyLine( aPoly );
+        }
+        else
+        {
+            tools::PolyPolygon aPolyPoly = rPolyPoly;
+            aPolyPoly.Move( nX, nY );
+            DrawPolyPolygon( aPolyPoly );
+        }
+    }
+
+    if ( !rRect1.IsEmpty() )
+    {
+        tools::Rectangle aRect( Point( nX+rRect1.Left(),
+                                nY+rRect1.Top() ), rRect1.GetSize() );
+        DrawRect( aRect );
+    }
+
+    if ( !rRect2.IsEmpty() )
+    {
+        tools::Rectangle aRect( Point( nX+rRect2.Left(),
+                                nY+rRect2.Top() ), rRect2.GetSize() );
+
+        DrawRect( aRect );
+    }
+}
+
+void OutputDevice::ImplDrawEmphasisMarks( SalLayout& rSalLayout )
+{
+    Color               aOldLineColor   = GetLineColor();
+    Color               aOldFillColor   = GetFillColor();
+    bool                bOldMap         = mbMap;
+    GDIMetaFile*        pOldMetaFile    = mpMetaFile;
+    mpMetaFile = nullptr;
+    EnableMapMode( false );
+
+    FontEmphasisMark    nEmphasisMark = ImplGetEmphasisMarkStyle( maFont );
+    tools::PolyPolygon  aPolyPoly;
+    tools::Rectangle           aRect1;
+    tools::Rectangle           aRect2;
+    tools::Long                nEmphasisYOff;
+    tools::Long                nEmphasisWidth;
+    tools::Long                nEmphasisHeight;
+    bool                bPolyLine;
+
+    if ( nEmphasisMark & FontEmphasisMark::PosBelow )
+        nEmphasisHeight = mnEmphasisDescent;
+    else
+        nEmphasisHeight = mnEmphasisAscent;
+
+    ImplGetEmphasisMark( aPolyPoly, bPolyLine,
+                         aRect1, aRect2,
+                         nEmphasisYOff, nEmphasisWidth,
+                         nEmphasisMark,
+                         nEmphasisHeight );
+
+    if ( bPolyLine )
+    {
+        SetLineColor( GetTextColor() );
+        SetFillColor();
+    }
+    else
+    {
+        SetLineColor();
+        SetFillColor( GetTextColor() );
+    }
+
+    Point aOffset(0,0);
+
+    if ( nEmphasisMark & FontEmphasisMark::PosBelow )
+        aOffset.AdjustY(mpFontInstance->mxFontMetric->GetDescent() + nEmphasisYOff );
+    else
+        aOffset.AdjustY( -(mpFontInstance->mxFontMetric->GetAscent() + nEmphasisYOff) );
+
+    tools::Long nEmphasisWidth2  = nEmphasisWidth / 2;
+    tools::Long nEmphasisHeight2 = nEmphasisHeight / 2;
+    aOffset += Point( nEmphasisWidth2, nEmphasisHeight2 );
+
+    DevicePoint aOutPoint;
+    tools::Rectangle aRectangle;
+    const GlyphItem* pGlyph;
+    const LogicalFontInstance* pGlyphFont;
+    int nStart = 0;
+    while (rSalLayout.GetNextGlyph(&pGlyph, aOutPoint, nStart, &pGlyphFont))
+    {
+        if (!pGlyph->GetGlyphBoundRect(pGlyphFont, aRectangle))
+            continue;
+
+        if (!pGlyph->IsSpacing())
+        {
+            Point aAdjPoint = aOffset;
+            aAdjPoint.AdjustX(aRectangle.Left() + (aRectangle.GetWidth() - nEmphasisWidth) / 2 );
+            if ( mpFontInstance->mnOrientation )
+            {
+                Point aOriginPt(0, 0);
+                aOriginPt.RotateAround( aAdjPoint, mpFontInstance->mnOrientation );
+            }
+            aOutPoint.adjustX(aAdjPoint.X() - nEmphasisWidth2);
+            aOutPoint.adjustY(aAdjPoint.Y() - nEmphasisHeight2);
+            ImplDrawEmphasisMark( rSalLayout.DrawBase().getX(),
+                                  aOutPoint.getX(), aOutPoint.getY(),
+                                  aPolyPoly, bPolyLine, aRect1, aRect2 );
+        }
+    }
+
+    SetLineColor( aOldLineColor );
+    SetFillColor( aOldFillColor );
+    EnableMapMode( bOldMap );
+    mpMetaFile = pOldMetaFile;
+}
+
+std::unique_ptr<SalLayout> OutputDevice::getFallbackLayout(
+    LogicalFontInstance* pLogicalFont, int nFallbackLevel,
+    vcl::text::ImplLayoutArgs& rLayoutArgs, const SalLayoutGlyphs* pGlyphs) const
+{
+    // we need a graphics
+    if (!mpGraphics && !AcquireGraphics())
+        return nullptr;
+
+    assert(mpGraphics != nullptr);
+    mpGraphics->SetFont( pLogicalFont, nFallbackLevel );
+
+    rLayoutArgs.ResetPos();
+    std::unique_ptr<GenericSalLayout> pFallback = mpGraphics->GetTextLayout(nFallbackLevel);
+
+    if (!pFallback)
+        return nullptr;
+
+    if (!pFallback->LayoutText(rLayoutArgs, pGlyphs ? pGlyphs->Impl(nFallbackLevel) : nullptr))
+    {
+        // there is no need for a font that couldn't resolve anything
+        return nullptr;
+    }
+
+    return pFallback;
+}
+
+std::unique_ptr<SalLayout> OutputDevice::ImplGlyphFallbackLayout( std::unique_ptr<SalLayout> pSalLayout,
+    vcl::text::ImplLayoutArgs& rLayoutArgs, const SalLayoutGlyphs* pGlyphs ) const
+{
+    // This function relies on a valid mpFontInstance, if it doesn't exist bail out
+    // - we'd have crashed later on anyway. At least here we can catch the error in debug
+    // mode.
+    if ( !mpFontInstance )
+    {
+        SAL_WARN ("vcl.gdi", "No font entry set in OutputDevice");
+        assert(mpFontInstance);
+        return nullptr;
+    }
+
+    // prepare multi level glyph fallback
+    std::unique_ptr<MultiSalLayout> pMultiSalLayout;
+    ImplLayoutRuns aLayoutRuns = rLayoutArgs.maRuns;
+    rLayoutArgs.PrepareFallback(nullptr);
+    rLayoutArgs.mnFlags |= SalLayoutFlags::ForFallback;
+
+    // get list of code units that need glyph fallback
+    int nCharPos = -1;
+    bool bRTL = false;
+    OUStringBuffer aMissingCodeBuf(512);
+    while (rLayoutArgs.GetNextPos( &nCharPos, &bRTL))
+        aMissingCodeBuf.append(rLayoutArgs.mrStr[nCharPos]);
+    rLayoutArgs.ResetPos();
+    OUString aMissingCodes = aMissingCodeBuf.makeStringAndClear();
+
+    vcl::font::FontSelectPattern aFontSelData(mpFontInstance->GetFontSelectPattern());
+    SalLayoutGlyphsImpl* pGlyphsImpl = pGlyphs ? pGlyphs->Impl(1) : nullptr;
+
+    // try if fallback fonts support the missing code units
+    for( int nFallbackLevel = 1; nFallbackLevel < MAX_FALLBACK; ++nFallbackLevel )
+    {
+        rtl::Reference<LogicalFontInstance> pFallbackFont;
+        if(pGlyphsImpl != nullptr)
+            pFallbackFont = pGlyphsImpl->GetFont();
+        // find a font family suited for glyph fallback
+        // GetGlyphFallbackFont() needs a valid FontInstance
+        // if the system-specific glyph fallback is active
+        OUString oldMissingCodes = aMissingCodes;
+        if( !pFallbackFont )
+            pFallbackFont = mxFontCache->GetGlyphFallbackFont( mxFontCollection.get(),
+                aFontSelData, mpFontInstance.get(), nFallbackLevel, aMissingCodes );
+        if( !pFallbackFont )
+            break;
+
+        if( nFallbackLevel < MAX_FALLBACK-1)
+        {
+            // ignore fallback font if it is the same as the original font
+            // TODO: This seems broken. Either the font does not provide any of the missing
+            // codes, in which case the fallback should not select it. Or it does provide
+            // some of the missing codes, and then why weren't they used the first time?
+            // This will just loop repeatedly finding the same font (it used to remove
+            // the found font from mxFontCache, but doesn't do that anymore and I don't
+            // see how doing that would remove the font from consideration for fallback).
+            if( mpFontInstance->GetFontFace() == pFallbackFont->GetFontFace())
+            {
+                if(aMissingCodes != oldMissingCodes)
+                {
+                    SAL_WARN("vcl.gdi", "Font fallback to the same font, but has missing codes");
+                    // Restore the missing codes if we're not going to use this font.
+                    aMissingCodes = oldMissingCodes;
+                }
+                continue;
+            }
+        }
+
+        // create and add glyph fallback layout to multilayout
+        std::unique_ptr<SalLayout> pFallback = getFallbackLayout(pFallbackFont.get(),
+            nFallbackLevel, rLayoutArgs, pGlyphs);
+        if (pFallback)
+        {
+            if( !pMultiSalLayout )
+                pMultiSalLayout.reset( new MultiSalLayout( std::move(pSalLayout) ) );
+            pMultiSalLayout->AddFallback(std::move(pFallback), rLayoutArgs.maRuns);
+            if (nFallbackLevel == MAX_FALLBACK-1)
+                pMultiSalLayout->SetIncomplete(true);
+        }
+
+        if (pGlyphs != nullptr)
+            pGlyphsImpl = pGlyphs->Impl(nFallbackLevel + 1);
+
+        // break when this fallback was sufficient
+        if( !rLayoutArgs.PrepareFallback(pGlyphsImpl) )
+            break;
+    }
+
+    if (pMultiSalLayout) // due to missing glyphs, multilevel layout fallback attempted
+    {
+        // if it works, use that Layout
+        if (pMultiSalLayout->LayoutText(rLayoutArgs, nullptr))
+            pSalLayout = std::move(pMultiSalLayout);
+        else
+        {
+            // if it doesn't, give up and restore ownership of the pSalLayout
+            // back to its original state
+            pSalLayout = pMultiSalLayout->ReleaseBaseLayout();
+        }
+    }
+
+    // restore orig font settings
+    pSalLayout->InitFont();
+    rLayoutArgs.maRuns = aLayoutRuns;
+
+    return pSalLayout;
+}
+
+tools::Long OutputDevice::GetMinKashida() const
+{
+    if (!ImplNewFont())
+        return 0;
+
+    return ImplDevicePixelToLogicWidth( mpFontInstance->mxFontMetric->GetMinKashida() );
+}
+
+sal_Int32 OutputDevice::ValidateKashidas ( const OUString& rTxt,
+                                            sal_Int32 nIdx, sal_Int32 nLen,
+                                            sal_Int32 nKashCount,
+                                            const sal_Int32* pKashidaPos,
+                                            sal_Int32* pKashidaPosDropped ) const
+{
+   // do layout
+    std::unique_ptr<SalLayout> pSalLayout = ImplLayout( rTxt, nIdx, nLen );
+    if( !pSalLayout )
+        return 0;
+    sal_Int32 nDropped = 0;
+    for( int i = 0; i < nKashCount; ++i )
+    {
+        if( !pSalLayout->IsKashidaPosValid( pKashidaPos[ i ] ))
+        {
+            pKashidaPosDropped[ nDropped ] = pKashidaPos [ i ];
+            ++nDropped;
+        }
+    }
+    return nDropped;
+}
+
+bool OutputDevice::GetGlyphBoundRects( const Point& rOrigin, const OUString& rStr,
+                                           int nIndex, int nLen, std::vector< tools::Rectangle >& rVector ) const
+{
+    rVector.clear();
+
+    if( nIndex >= rStr.getLength() )
+        return false;
+
+    if( nLen < 0 || nIndex + nLen >= rStr.getLength() )
+    {
+        nLen = rStr.getLength() - nIndex;
+    }
+
+    tools::Rectangle aRect;
+    for( int i = 0; i < nLen; i++ )
+    {
+        if( !GetTextBoundRect( aRect, rStr, nIndex, nIndex + i, 1 ) )
+            break;
+        aRect.Move( rOrigin.X(), rOrigin.Y() );
+        rVector.push_back( aRect );
+    }
+
+    return (nLen == static_cast<int>(rVector.size()));
+}
+
+sal_Int32 OutputDevice::HasGlyphs( const vcl::Font& rTempFont, const OUString& rStr,
+    sal_Int32 nIndex, sal_Int32 nLen ) const
+{
+    if( nIndex >= rStr.getLength() )
+        return nIndex;
+    sal_Int32 nEnd;
+    if( nLen == -1 )
+        nEnd = rStr.getLength();
+    else
+        nEnd = std::min( rStr.getLength(), nIndex + nLen );
+
+    SAL_WARN_IF( nIndex >= nEnd, "vcl.gdi", "StartPos >= EndPos?" );
+    SAL_WARN_IF( nEnd > rStr.getLength(), "vcl.gdi", "String too short" );
+
+    // to get the map temporarily set font
+    const vcl::Font aOrigFont = GetFont();
+    const_cast<OutputDevice&>(*this).SetFont( rTempFont );
+    FontCharMapRef xFontCharMap;
+    bool bRet = GetFontCharMap( xFontCharMap );
+    const_cast<OutputDevice&>(*this).SetFont( aOrigFont );
+
+    // if fontmap is unknown assume it doesn't have the glyphs
+    if( !bRet )
+        return nIndex;
+
+    for( sal_Int32 i = nIndex; nIndex < nEnd; ++i, ++nIndex )
+        if( ! xFontCharMap->HasChar( rStr[i] ) )
+            return nIndex;
+
+    return -1;
+}
+
+void OutputDevice::ReleaseFontCache() { mxFontCache.reset(); }
+
+void OutputDevice::ReleaseFontCollection() { mxFontCollection.reset(); }
+
+void OutputDevice::SetFontCollectionFromSVData()
+{
+    mxFontCollection = ImplGetSVData()->maGDIData.mxScreenFontList->Clone();
+}
+
+void OutputDevice::ResetNewFontCache()
+{
+    mxFontCache = std::make_shared<ImplFontCache>();
+}
+
+void OutputDevice::ImplReleaseFonts()
+{
+    mpGraphics->ReleaseFonts();
+
+    mbNewFont = true;
+    mbInitFont = true;
+
+    mpFontInstance.clear();
+    mpFontFaceCollection.reset();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */