office-gobmx/vcl/win/gdi/salfont.cxx
Gabor Kelemen e1a351ca19 Remove now unneeded osl/diagnose.h
followup to commit 57c228803e

Change-Id: Iebfb23bb65e2bf898bf27f367cc9641f47a14cf3
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/167998
Reviewed-by: Gabor Kelemen <gabor.kelemen.extern@allotropia.de>
Tested-by: Jenkins
2024-07-20 10:20:31 +02:00

1361 lines
45 KiB
C++

/* -*- 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 <sal/types.h>
#include <config_folders.h>
#include <algorithm>
#include <map>
#include <memory>
#include <mutex>
#include <set>
#include <string.h>
#include <string_view>
#include <svsys.h>
#include <vector>
#include <dwrite_3.h>
// Currently, we build with _WIN32_WINNT=0x0601 (Windows 7), which means newer
// declarations in dwrite_3.h will not be visible.
#if WINVER < 0x0A00
# include "dw-extra.h"
#endif
#include <o3tl/lru_map.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <i18nlangtag/mslangid.hxx>
#include <osl/diagnose.h>
#include <osl/file.hxx>
#include <osl/process.h>
#include <rtl/bootstrap.hxx>
#include <rtl/tencinfo.h>
#include <sal/log.hxx>
#include <o3tl/char16_t2wchar_t.hxx>
#include <tools/helpers.hxx>
#include <tools/stream.hxx>
#include <tools/urlobj.hxx>
#include <unotools/fontcfg.hxx>
#include <vcl/settings.hxx>
#include <vcl/sysdata.hxx>
#include <vcl/metric.hxx>
#include <vcl/fontcharmap.hxx>
#include <comphelper/scopeguard.hxx>
#include <comphelper/windowserrorstring.hxx>
#include <font/FontSelectPattern.hxx>
#include <font/PhysicalFontCollection.hxx>
#include <font/PhysicalFontFaceCollection.hxx>
#include <font/PhysicalFontFace.hxx>
#include <font/fontsubstitution.hxx>
#include <sft.hxx>
#include <win/saldata.hxx>
#include <win/salgdi.h>
#include <win/winlayout.hxx>
#include <win/wingdiimpl.hxx>
#include <impfontcharmap.hxx>
#include <font/FontMetricData.hxx>
#include <impglyphitem.hxx>
#if HAVE_FEATURE_SKIA
#include <vcl/skia/SkiaHelper.hxx>
#include <skia/win/font.hxx>
#endif
using namespace vcl;
static FIXED FixedFromDouble( double d )
{
const tools::Long l = static_cast<tools::Long>( d * 65536. );
return *reinterpret_cast<FIXED const *>(&l);
}
static int IntTimes256FromFixed(FIXED f)
{
int nFixedTimes256 = (f.value << 8) + ((f.fract+0x80) >> 8);
return nFixedTimes256;
}
// platform specific font substitution hooks for glyph fallback enhancement
namespace {
class WinPreMatchFontSubstititution
: public vcl::font::PreMatchFontSubstitution
{
public:
bool FindFontSubstitute(vcl::font::FontSelectPattern&) const override;
};
class WinGlyphFallbackSubstititution
: public vcl::font::GlyphFallbackFontSubstitution
{
public:
bool FindFontSubstitute(vcl::font::FontSelectPattern&, LogicalFontInstance* pLogicalFont, OUString& rMissingChars) const override;
};
// does a font face hold the given missing characters?
bool HasMissingChars(vcl::font::PhysicalFontFace* pFace, OUString& rMissingChars)
{
FontCharMapRef xFontCharMap = pFace->GetFontCharMap();
// avoid fonts with unknown CMAP subtables for glyph fallback
if( !xFontCharMap.is() || xFontCharMap->IsDefaultMap() )
return false;
int nMatchCount = 0;
std::vector<sal_UCS4> rRemainingCodes;
const sal_Int32 nStrLen = rMissingChars.getLength();
sal_Int32 nStrIdx = 0;
while (nStrIdx < nStrLen)
{
const sal_UCS4 uChar = rMissingChars.iterateCodePoints( &nStrIdx );
if (xFontCharMap->HasChar(uChar))
nMatchCount++;
else
rRemainingCodes.push_back(uChar);
}
xFontCharMap = nullptr;
if (nMatchCount > 0)
rMissingChars = OUString(rRemainingCodes.data(), rRemainingCodes.size());
return nMatchCount > 0;
}
//used by 2-level font fallback
vcl::font::PhysicalFontFamily* findDevFontListByLocale(const vcl::font::PhysicalFontCollection &rFontCollection,
const LanguageTag& rLanguageTag )
{
// get the default font for a specified locale
const utl::DefaultFontConfiguration& rDefaults = utl::DefaultFontConfiguration::get();
const OUString aDefault = rDefaults.getUserInterfaceFont(rLanguageTag);
return rFontCollection.FindFontFamilyByTokenNames(aDefault);
}
}
// These are Win 3.1 bitmap fonts using "FON" font format
// which is not supported with DirectWrite so let's substitute them
// with a font that is supported and always available.
// Based on:
// https://dxr.mozilla.org/mozilla-esr10/source/gfx/thebes/gfxDWriteFontList.cpp#1057
const std::map<OUString, OUString> aBitmapFontSubs =
{
{ "MS Sans Serif", "Microsoft Sans Serif" },
{ "MS Serif", "Times New Roman" },
{ "Small Fonts", "Arial" },
{ "Courier", "Courier New" },
{ "Roman", "Times New Roman" },
{ "Script", "Mistral" }
};
// TODO: See if Windows have API that we can use here to improve font fallback.
bool WinPreMatchFontSubstititution::FindFontSubstitute(vcl::font::FontSelectPattern& rFontSelData) const
{
if (rFontSelData.IsMicrosoftSymbolEncoded() || IsOpenSymbol(rFontSelData.maSearchName))
return false;
for (const auto& aSub : aBitmapFontSubs)
{
if (rFontSelData.maSearchName == GetEnglishSearchFontName(aSub.first))
{
rFontSelData.maSearchName = aSub.second;
return true;
}
}
return false;
}
// find a fallback font for missing characters
// TODO: should stylistic matches be searched and preferred?
bool WinGlyphFallbackSubstititution::FindFontSubstitute(vcl::font::FontSelectPattern& rFontSelData, LogicalFontInstance* /*pLogicalFont*/, OUString& rMissingChars) const
{
// guess a locale matching to the missing chars
LanguageType eLang = rFontSelData.meLanguage;
LanguageTag aLanguageTag( eLang);
// fall back to default UI locale if the font language is inconclusive
if( eLang == LANGUAGE_DONTKNOW )
aLanguageTag = Application::GetSettings().GetUILanguageTag();
// first level fallback:
// try use the locale specific default fonts defined in VCL.xcu
const vcl::font::PhysicalFontCollection* pFontCollection = ImplGetSVData()->maGDIData.mxScreenFontList.get();
vcl::font::PhysicalFontFamily* pFontFamily = findDevFontListByLocale(*pFontCollection, aLanguageTag);
if( pFontFamily )
{
vcl::font::PhysicalFontFace* pFace = pFontFamily->FindBestFontFace( rFontSelData );
if( HasMissingChars( pFace, rMissingChars ) )
{
rFontSelData.maSearchName = pFontFamily->GetSearchName();
return true;
}
}
// are the missing characters symbols?
pFontFamily = pFontCollection->FindFontFamilyByAttributes( ImplFontAttrs::Symbol,
rFontSelData.GetWeight(),
rFontSelData.GetWidthType(),
rFontSelData.GetItalic(),
rFontSelData.maSearchName );
if( pFontFamily )
{
vcl::font::PhysicalFontFace* pFace = pFontFamily->FindBestFontFace( rFontSelData );
if( HasMissingChars( pFace, rMissingChars ) )
{
rFontSelData.maSearchName = pFontFamily->GetSearchName();
return true;
}
}
// last level fallback, check each font type face one by one
std::unique_ptr<vcl::font::PhysicalFontFaceCollection> pTestFontList = pFontCollection->GetFontFaceCollection();
// limit the count of fonts to be checked to prevent hangs
static const int MAX_GFBFONT_COUNT = 600;
int nTestFontCount = pTestFontList->Count();
if( nTestFontCount > MAX_GFBFONT_COUNT )
nTestFontCount = MAX_GFBFONT_COUNT;
bool bFound = false;
for( int i = 0; i < nTestFontCount; ++i )
{
vcl::font::PhysicalFontFace* pFace = pTestFontList->Get( i );
bFound = HasMissingChars( pFace, rMissingChars );
if( !bFound )
continue;
rFontSelData.maSearchName = pFace->GetFamilyName();
break;
}
return bFound;
}
namespace {
struct ImplEnumInfo
{
HDC mhDC;
vcl::font::PhysicalFontCollection* mpList;
OUString* mpName;
LOGFONTW* mpLogFont;
bool mbPrinter;
int mnFontCount;
};
}
static rtl_TextEncoding ImplCharSetToSal( BYTE nCharSet )
{
rtl_TextEncoding eTextEncoding;
if ( nCharSet == OEM_CHARSET )
{
UINT nCP = static_cast<sal_uInt16>(GetOEMCP());
switch ( nCP )
{
// It is unclear why these two (undefined?) code page numbers are
// handled specially here:
case 1004: eTextEncoding = RTL_TEXTENCODING_MS_1252; break;
case 65400: eTextEncoding = RTL_TEXTENCODING_SYMBOL; break;
default:
eTextEncoding = rtl_getTextEncodingFromWindowsCodePage(nCP);
break;
}
}
else
{
if( nCharSet )
eTextEncoding = rtl_getTextEncodingFromWindowsCharset( nCharSet );
else
eTextEncoding = RTL_TEXTENCODING_UNICODE;
}
return eTextEncoding;
}
static FontFamily ImplFamilyToSal( BYTE nFamily )
{
switch ( nFamily & 0xF0 )
{
case FF_DECORATIVE:
return FAMILY_DECORATIVE;
case FF_MODERN:
return FAMILY_MODERN;
case FF_ROMAN:
return FAMILY_ROMAN;
case FF_SCRIPT:
return FAMILY_SCRIPT;
case FF_SWISS:
return FAMILY_SWISS;
default:
break;
}
return FAMILY_DONTKNOW;
}
static BYTE ImplFamilyToWin( FontFamily eFamily )
{
switch ( eFamily )
{
case FAMILY_DECORATIVE:
return FF_DECORATIVE;
case FAMILY_MODERN:
return FF_MODERN;
case FAMILY_ROMAN:
return FF_ROMAN;
case FAMILY_SCRIPT:
return FF_SCRIPT;
case FAMILY_SWISS:
return FF_SWISS;
case FAMILY_SYSTEM:
return FF_SWISS;
default:
break;
}
return FF_DONTCARE;
}
static FontWeight ImplWeightToSal( int nWeight )
{
if ( nWeight <= FW_THIN )
return WEIGHT_THIN;
else if ( nWeight <= FW_ULTRALIGHT )
return WEIGHT_ULTRALIGHT;
else if ( nWeight <= FW_LIGHT )
return WEIGHT_LIGHT;
else if ( nWeight < FW_MEDIUM )
return WEIGHT_NORMAL;
else if ( nWeight == FW_MEDIUM )
return WEIGHT_MEDIUM;
else if ( nWeight <= FW_SEMIBOLD )
return WEIGHT_SEMIBOLD;
else if ( nWeight <= FW_BOLD )
return WEIGHT_BOLD;
else if ( nWeight <= FW_ULTRABOLD )
return WEIGHT_ULTRABOLD;
else
return WEIGHT_BLACK;
}
static int ImplWeightToWin( FontWeight eWeight )
{
switch ( eWeight )
{
case WEIGHT_THIN:
return FW_THIN;
case WEIGHT_ULTRALIGHT:
return FW_ULTRALIGHT;
case WEIGHT_LIGHT:
return FW_LIGHT;
case WEIGHT_SEMILIGHT:
case WEIGHT_NORMAL:
return FW_NORMAL;
case WEIGHT_MEDIUM:
return FW_MEDIUM;
case WEIGHT_SEMIBOLD:
return FW_SEMIBOLD;
case WEIGHT_BOLD:
return FW_BOLD;
case WEIGHT_ULTRABOLD:
return FW_ULTRABOLD;
case WEIGHT_BLACK:
return FW_BLACK;
default:
break;
}
return 0;
}
static FontPitch ImplLogPitchToSal( BYTE nPitch )
{
if ( nPitch & FIXED_PITCH )
return PITCH_FIXED;
else
return PITCH_VARIABLE;
}
static FontPitch ImplMetricPitchToSal( BYTE nPitch )
{
// Grrrr! See NT help
if ( !(nPitch & TMPF_FIXED_PITCH) )
return PITCH_FIXED;
else
return PITCH_VARIABLE;
}
static BYTE ImplPitchToWin( FontPitch ePitch )
{
if ( ePitch == PITCH_FIXED )
return FIXED_PITCH;
else if ( ePitch == PITCH_VARIABLE )
return VARIABLE_PITCH;
else
return DEFAULT_PITCH;
}
static FontAttributes WinFont2DevFontAttributes( const ENUMLOGFONTEXW& rEnumFont,
const NEWTEXTMETRICW& rMetric)
{
FontAttributes aDFA;
const LOGFONTW rLogFont = rEnumFont.elfLogFont;
// get font face attributes
aDFA.SetFamilyType(ImplFamilyToSal( rLogFont.lfPitchAndFamily ));
aDFA.SetWidthType(WIDTH_DONTKNOW);
aDFA.SetWeight(ImplWeightToSal( rLogFont.lfWeight ));
aDFA.SetItalic((rLogFont.lfItalic) ? ITALIC_NORMAL : ITALIC_NONE);
aDFA.SetPitch(ImplLogPitchToSal( rLogFont.lfPitchAndFamily ));
aDFA.SetMicrosoftSymbolEncoded(rLogFont.lfCharSet == SYMBOL_CHARSET);
// get the font face name
aDFA.SetFamilyName(OUString(o3tl::toU(rLogFont.lfFaceName)));
// use the face's style name only if it looks reasonable
const wchar_t* pStyleName = rEnumFont.elfStyle;
const wchar_t* pEnd = pStyleName + sizeof(rEnumFont.elfStyle)/sizeof(*rEnumFont.elfStyle);
const wchar_t* p = pStyleName;
for(; *p && (p < pEnd); ++p )
if( *p < 0x0020 )
break;
if( p < pEnd )
aDFA.SetStyleName(OUString(o3tl::toU(pStyleName)));
// heuristics for font quality
// - opentypeTT > truetype
aDFA.SetQuality( 0 );
if( rMetric.tmPitchAndFamily & TMPF_TRUETYPE )
aDFA.IncreaseQualityBy( 50 );
if( 0 != (rMetric.ntmFlags & (NTM_TT_OPENTYPE | NTM_PS_OPENTYPE)) )
aDFA.IncreaseQualityBy( 10 );
// TODO: add alias names
return aDFA;
}
void ImplSalLogFontToFontW( HDC hDC, const LOGFONTW& rLogFont, Font& rFont )
{
OUString aFontName( o3tl::toU(rLogFont.lfFaceName) );
if (!aFontName.isEmpty())
{
rFont.SetFamilyName( aFontName );
rFont.SetCharSet( ImplCharSetToSal( rLogFont.lfCharSet ) );
rFont.SetFamily( ImplFamilyToSal( rLogFont.lfPitchAndFamily ) );
rFont.SetPitch( ImplLogPitchToSal( rLogFont.lfPitchAndFamily ) );
rFont.SetWeight( ImplWeightToSal( rLogFont.lfWeight ) );
tools::Long nFontHeight = rLogFont.lfHeight;
if ( nFontHeight < 0 )
nFontHeight = -nFontHeight;
tools::Long nDPIY = GetDeviceCaps( hDC, LOGPIXELSY );
if( !nDPIY )
nDPIY = 600;
nFontHeight *= 72;
nFontHeight += nDPIY/2;
nFontHeight /= nDPIY;
rFont.SetFontSize( Size( 0, nFontHeight ) );
rFont.SetOrientation( Degree10(static_cast<sal_Int16>(rLogFont.lfEscapement)) );
if ( rLogFont.lfItalic )
rFont.SetItalic( ITALIC_NORMAL );
else
rFont.SetItalic( ITALIC_NONE );
if ( rLogFont.lfUnderline )
rFont.SetUnderline( LINESTYLE_SINGLE );
else
rFont.SetUnderline( LINESTYLE_NONE );
if ( rLogFont.lfStrikeOut )
rFont.SetStrikeout( STRIKEOUT_SINGLE );
else
rFont.SetStrikeout( STRIKEOUT_NONE );
}
}
WinFontFace::WinFontFace(const ENUMLOGFONTEXW& rEnumFont, const NEWTEXTMETRICW& rMetric)
: vcl::font::PhysicalFontFace(WinFont2DevFontAttributes(rEnumFont, rMetric)),
mnId( 0 ),
meWinCharSet(rEnumFont.elfLogFont.lfCharSet),
mnPitchAndFamily(rMetric.tmPitchAndFamily),
maLogFont(rEnumFont.elfLogFont)
{
}
WinFontFace::~WinFontFace()
{
}
sal_IntPtr WinFontFace::GetFontId() const
{
return mnId;
}
rtl::Reference<LogicalFontInstance> WinFontFace::CreateFontInstance(const vcl::font::FontSelectPattern& rFSD) const
{
#if HAVE_FEATURE_SKIA
if (SkiaHelper::isVCLSkiaEnabled())
return new SkiaWinFontInstance(*this, rFSD);
#endif
return new WinFontInstance(*this, rFSD);
}
const std::vector<hb_variation_t>&
WinFontFace::GetVariations(const LogicalFontInstance& rFont) const
{
if (!mxVariations)
{
mxVariations.emplace();
auto pDWFontFace = static_cast<const WinFontInstance&>(rFont).GetDWFontFace();
if (pDWFontFace)
{
sal::systools::COMReference<IDWriteFontFace5> xDWFontFace5;
auto hr = pDWFontFace->QueryInterface(__uuidof(IDWriteFontFace5),
reinterpret_cast<void**>(&xDWFontFace5));
if (SUCCEEDED(hr) && xDWFontFace5->HasVariations())
{
std::vector<DWRITE_FONT_AXIS_VALUE> aAxisValues(
xDWFontFace5->GetFontAxisValueCount());
hr = xDWFontFace5->GetFontAxisValues(aAxisValues.data(), aAxisValues.size());
if (SUCCEEDED(hr))
{
mxVariations->reserve(aAxisValues.size());
for (auto& rAxisValue : aAxisValues)
mxVariations->push_back(
{ OSL_NETDWORD(rAxisValue.axisTag), rAxisValue.value });
}
}
}
}
return *mxVariations;
}
namespace
{
struct BlobReference
{
hb_blob_t* mpBlob;
BlobReference(hb_blob_t* pBlob)
: mpBlob(pBlob)
{
hb_blob_reference(mpBlob);
}
BlobReference(BlobReference&& other) noexcept
: mpBlob(other.mpBlob)
{
other.mpBlob = nullptr;
}
BlobReference& operator=(BlobReference&& other)
{
std::swap(mpBlob, other.mpBlob);
return *this;
}
BlobReference(const BlobReference& other) = delete;
BlobReference& operator=(BlobReference& other) = delete;
~BlobReference() { hb_blob_destroy(mpBlob); }
};
}
using BlobCacheKey = std::pair<sal_IntPtr, hb_tag_t>;
namespace
{
struct BlobCacheKeyHash
{
std::size_t operator()(BlobCacheKey const& rKey) const
{
std::size_t seed = 0;
o3tl::hash_combine(seed, rKey.first);
o3tl::hash_combine(seed, rKey.second);
return seed;
}
};
}
hb_blob_t* WinFontFace::GetHbTable(hb_tag_t nTag) const
{
static o3tl::lru_map<BlobCacheKey, BlobReference, BlobCacheKeyHash> gCache(50);
BlobCacheKey aCacheKey{ GetFontId(), nTag };
auto it = gCache.find(aCacheKey);
if (it != gCache.end())
{
hb_blob_reference(it->second.mpBlob);
return it->second.mpBlob;
}
sal_uLong nLength = 0;
unsigned char* pBuffer = nullptr;
HDC hDC(::GetDC(nullptr));
HFONT hFont = ::CreateFontIndirectW(&maLogFont);
HFONT hOldFont = ::SelectFont(hDC, hFont);
nLength = ::GetFontData(hDC, OSL_NETDWORD(nTag), 0, nullptr, 0);
if (nLength > 0 && nLength != GDI_ERROR)
{
pBuffer = new unsigned char[nLength];
::GetFontData(hDC, OSL_NETDWORD(nTag), 0, pBuffer, nLength);
}
::SelectFont(hDC, hOldFont);
::DeleteFont(hFont);
::ReleaseDC(nullptr, hDC);
hb_blob_t* pBlob = nullptr;
if (pBuffer)
pBlob = hb_blob_create(reinterpret_cast<const char*>(pBuffer), nLength, HB_MEMORY_MODE_READONLY,
pBuffer, [](void* data) { delete[] static_cast<unsigned char*>(data); });
gCache.insert({ aCacheKey, BlobReference(pBlob) });
return pBlob;
}
void WinSalGraphics::SetTextColor( Color nColor )
{
COLORREF aCol = PALETTERGB( nColor.GetRed(),
nColor.GetGreen(),
nColor.GetBlue() );
if( !mbPrinter &&
GetSalData()->mhDitherPal &&
ImplIsSysColorEntry( nColor ) )
{
aCol = PALRGB_TO_RGB( aCol );
}
::SetTextColor( getHDC(), aCol );
}
static int CALLBACK SalEnumQueryFontProcExW( const LOGFONTW*, const TEXTMETRICW*, DWORD, LPARAM lParam )
{
*reinterpret_cast<bool*>(lParam) = true;
return 0;
}
void ImplGetLogFontFromFontSelect( const vcl::font::FontSelectPattern& rFont,
const vcl::font::PhysicalFontFace* pFontFace,
LOGFONTW& rLogFont )
{
OUString aName;
if (pFontFace)
aName = pFontFace->GetFamilyName();
else
aName = rFont.GetFamilyName().getToken( 0, ';' );
UINT nNameLen = aName.getLength();
if (nNameLen >= LF_FACESIZE)
nNameLen = LF_FACESIZE - 1;
memcpy( rLogFont.lfFaceName, aName.getStr(), nNameLen*sizeof( wchar_t ) );
rLogFont.lfFaceName[nNameLen] = 0;
if (pFontFace)
{
const WinFontFace* pWinFontData = static_cast<const WinFontFace*>(pFontFace);
rLogFont.lfCharSet = pWinFontData->GetCharSet();
rLogFont.lfPitchAndFamily = pWinFontData->GetPitchAndFamily();
}
else
{
rLogFont.lfCharSet = rFont.IsMicrosoftSymbolEncoded() ? SYMBOL_CHARSET : DEFAULT_CHARSET;
rLogFont.lfPitchAndFamily = ImplPitchToWin( rFont.GetPitch() )
| ImplFamilyToWin( rFont.GetFamilyType() );
}
rLogFont.lfWeight = ImplWeightToWin( rFont.GetWeight() );
rLogFont.lfHeight = static_cast<LONG>(-rFont.mnHeight);
rLogFont.lfWidth = static_cast<LONG>(rFont.mnWidth);
rLogFont.lfUnderline = 0;
rLogFont.lfStrikeOut = 0;
rLogFont.lfItalic = BYTE(rFont.GetItalic() != ITALIC_NONE);
rLogFont.lfEscapement = rFont.mnOrientation.get();
rLogFont.lfOrientation = rLogFont.lfEscapement;
rLogFont.lfClipPrecision = CLIP_DEFAULT_PRECIS;
rLogFont.lfQuality = DEFAULT_QUALITY;
rLogFont.lfOutPrecision = OUT_TT_PRECIS;
if ( rFont.mnOrientation )
rLogFont.lfClipPrecision |= CLIP_LH_ANGLES;
// disable antialiasing if requested
if ( rFont.mbNonAntialiased )
rLogFont.lfQuality = NONANTIALIASED_QUALITY;
}
std::tuple<HFONT,bool,sal_Int32> WinSalGraphics::ImplDoSetFont(HDC hDC, vcl::font::FontSelectPattern const & i_rFont,
const vcl::font::PhysicalFontFace * i_pFontFace,
HFONT& o_rOldFont)
{
HFONT hNewFont = nullptr;
LOGFONTW aLogFont;
ImplGetLogFontFromFontSelect( i_rFont, i_pFontFace, aLogFont );
bool bIsCJKVerticalFont = false;
// select vertical mode for printing if requested and available
if ( i_rFont.mbVertical && mbPrinter )
{
constexpr size_t nLen = sizeof(aLogFont.lfFaceName) - sizeof(aLogFont.lfFaceName[0]);
// vertical fonts start with an '@'
memmove( &aLogFont.lfFaceName[1], &aLogFont.lfFaceName[0], nLen );
aLogFont.lfFaceName[0] = '@';
aLogFont.lfFaceName[LF_FACESIZE - 1] = 0;
// check availability of vertical mode for this font
EnumFontFamiliesExW( getHDC(), &aLogFont, SalEnumQueryFontProcExW,
reinterpret_cast<LPARAM>(&bIsCJKVerticalFont), 0 );
if( !bIsCJKVerticalFont )
{
// restore non-vertical name if not vertical mode isn't available
memcpy( &aLogFont.lfFaceName[0], &aLogFont.lfFaceName[1], nLen );
aLogFont.lfFaceName[LF_FACESIZE - 1] = 0;
}
}
hNewFont = ::CreateFontIndirectW( &aLogFont );
o_rOldFont = ::SelectFont(hDC, hNewFont);
TEXTMETRICW aTextMetricW;
if (!::GetTextMetricsW(hDC, &aTextMetricW))
{
// the selected font doesn't work => try a replacement
// TODO: use its font fallback instead
lstrcpynW( aLogFont.lfFaceName, L"Courier New", 12 );
aLogFont.lfPitchAndFamily = FIXED_PITCH;
HFONT hNewFont2 = CreateFontIndirectW( &aLogFont );
SelectFont(hDC, hNewFont2);
DeleteFont( hNewFont );
hNewFont = hNewFont2;
bIsCJKVerticalFont = false;
}
return std::make_tuple(hNewFont, bIsCJKVerticalFont, static_cast<sal_Int32>(aTextMetricW.tmDescent));
}
void WinSalGraphics::SetFont(LogicalFontInstance* pFont, int nFallbackLevel)
{
assert(nFallbackLevel >= 0 && nFallbackLevel < MAX_FALLBACK);
// return early if there is no new font
if( !pFont )
{
if (!mpWinFontEntry[nFallbackLevel].is())
return;
// DeInitGraphics doesn't free the cached fonts, so mhDefFont might be nullptr
if (mhDefFont)
{
::SelectFont(getHDC(), mhDefFont);
mhDefFont = nullptr;
}
// release no longer referenced font handles
for( int i = nFallbackLevel; i < MAX_FALLBACK; ++i )
mpWinFontEntry[i] = nullptr;
return;
}
WinFontInstance *pFontInstance = static_cast<WinFontInstance*>(pFont);
mpWinFontEntry[ nFallbackLevel ] = pFontInstance;
HFONT hOldFont = nullptr;
HFONT hNewFont = pFontInstance->GetHFONT();
if (!hNewFont)
{
pFontInstance->SetGraphics(this);
hNewFont = pFontInstance->GetHFONT();
}
hOldFont = ::SelectFont(getHDC(), hNewFont);
// keep default font
if( !mhDefFont )
mhDefFont = hOldFont;
else
{
// release no longer referenced font handles
for( int i = nFallbackLevel + 1; i < MAX_FALLBACK && mpWinFontEntry[i].is(); ++i )
mpWinFontEntry[i] = nullptr;
}
}
void WinSalGraphics::GetFontMetric( FontMetricDataRef& rxFontMetric, int nFallbackLevel )
{
// temporarily change the HDC to the font in the fallback level
rtl::Reference<WinFontInstance> pFontInstance = mpWinFontEntry[nFallbackLevel];
const HFONT hOldFont = SelectFont(getHDC(), pFontInstance->GetHFONT());
wchar_t aFaceName[LF_FACESIZE+60];
if( GetTextFaceW( getHDC(), SAL_N_ELEMENTS(aFaceName), aFaceName ) )
rxFontMetric->SetFamilyName(OUString(o3tl::toU(aFaceName)));
rxFontMetric->SetMinKashida(pFontInstance->GetKashidaWidth());
rxFontMetric->ImplCalcLineSpacing(pFontInstance.get());
rxFontMetric->ImplInitBaselines(pFontInstance.get());
// get the font metric
OUTLINETEXTMETRICW aOutlineMetric;
const bool bOK = GetOutlineTextMetricsW(getHDC(), sizeof(aOutlineMetric), &aOutlineMetric);
// restore the HDC to the font in the base level
SelectFont( getHDC(), hOldFont );
if( !bOK )
return;
TEXTMETRICW aWinMetric = aOutlineMetric.otmTextMetrics;
// device independent font attributes
rxFontMetric->SetFamilyType(ImplFamilyToSal( aWinMetric.tmPitchAndFamily ));
rxFontMetric->SetMicrosoftSymbolEncoded(aWinMetric.tmCharSet == SYMBOL_CHARSET);
rxFontMetric->SetWeight(ImplWeightToSal( aWinMetric.tmWeight ));
rxFontMetric->SetPitch(ImplMetricPitchToSal( aWinMetric.tmPitchAndFamily ));
rxFontMetric->SetItalic(aWinMetric.tmItalic ? ITALIC_NORMAL : ITALIC_NONE);
rxFontMetric->SetSlant( 0 );
// transformation dependent font metrics
rxFontMetric->SetWidth(aWinMetric.tmAveCharWidth);
}
FontCharMapRef WinSalGraphics::GetFontCharMap() const
{
if (!mpWinFontEntry[0])
{
return FontCharMapRef( new FontCharMap() );
}
return mpWinFontEntry[0]->GetFontFace()->GetFontCharMap();
}
bool WinSalGraphics::GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities) const
{
if (!mpWinFontEntry[0])
return false;
return mpWinFontEntry[0]->GetFontFace()->GetFontCapabilities(rFontCapabilities);
}
static int CALLBACK SalEnumFontsProcExW( const LOGFONTW* lpelfe,
const TEXTMETRICW* lpntme,
DWORD nFontType, LPARAM lParam )
{
ENUMLOGFONTEXW const * pLogFont
= reinterpret_cast<ENUMLOGFONTEXW const *>(lpelfe);
NEWTEXTMETRICEXW const * pMetric
= reinterpret_cast<NEWTEXTMETRICEXW const *>(lpntme);
ImplEnumInfo* pInfo = reinterpret_cast<ImplEnumInfo*>(lParam);
if ( !pInfo->mpName )
{
// Ignore vertical fonts
if ( pLogFont->elfLogFont.lfFaceName[0] != '@' )
{
OUString aName(o3tl::toU(pLogFont->elfLogFont.lfFaceName));
pInfo->mpName = &aName;
memcpy(pInfo->mpLogFont->lfFaceName, pLogFont->elfLogFont.lfFaceName, (aName.getLength()+1)*sizeof(wchar_t));
pInfo->mpLogFont->lfCharSet = pLogFont->elfLogFont.lfCharSet;
EnumFontFamiliesExW(pInfo->mhDC, pInfo->mpLogFont, SalEnumFontsProcExW,
reinterpret_cast<LPARAM>(pInfo), 0);
pInfo->mpLogFont->lfFaceName[0] = '\0';
pInfo->mpLogFont->lfCharSet = DEFAULT_CHARSET;
pInfo->mpName = nullptr;
}
}
else
{
// Ignore non-device fonts on printers.
if (pInfo->mbPrinter)
{
if ((nFontType & RASTER_FONTTYPE) && !(nFontType & DEVICE_FONTTYPE))
{
SAL_INFO("vcl.fonts", "Unsupported printer font ignored: " << OUString(o3tl::toU(pLogFont->elfLogFont.lfFaceName)));
return 1;
}
}
// Only SFNT fonts are supported, ignore anything else.
else if (!(nFontType & TRUETYPE_FONTTYPE) &&
!(pMetric->ntmTm.ntmFlags & NTM_PS_OPENTYPE) &&
!(pMetric->ntmTm.ntmFlags & NTM_TT_OPENTYPE))
{
SAL_INFO("vcl.fonts", "Unsupported font ignored: " << OUString(o3tl::toU(pLogFont->elfLogFont.lfFaceName)));
return 1;
}
rtl::Reference<WinFontFace> pData = new WinFontFace(*pLogFont, pMetric->ntmTm);
pData->SetFontId( sal_IntPtr( pInfo->mnFontCount++ ) );
pInfo->mpList->Add( pData.get() );
SAL_INFO("vcl.fonts", "SalEnumFontsProcExW: font added: " << pData->GetFamilyName() << " " << pData->GetStyleName());
}
return 1;
}
struct TempFontItem
{
OUString maFontResourcePath;
TempFontItem* mpNextItem;
};
static int lcl_AddFontResource(SalData& rSalData, const OUString& rFontFileURL, bool bShared)
{
OUString aFontSystemPath;
OSL_VERIFY(!osl::FileBase::getSystemPathFromFileURL(rFontFileURL, aFontSystemPath));
int nRet = AddFontResourceExW(o3tl::toW(aFontSystemPath.getStr()), FR_PRIVATE, nullptr);
SAL_WARN_IF(nRet <= 0, "vcl.fonts", "AddFontResourceExW failed for " << rFontFileURL);
if (nRet > 0)
{
TempFontItem* pNewItem = new TempFontItem;
pNewItem->maFontResourcePath = aFontSystemPath;
if (bShared)
{
pNewItem->mpNextItem = rSalData.mpSharedTempFontItem;
rSalData.mpSharedTempFontItem = pNewItem;
}
else
{
pNewItem->mpNextItem = rSalData.mpOtherTempFontItem;
rSalData.mpOtherTempFontItem = pNewItem;
}
}
return nRet;
}
void ImplReleaseTempFonts(SalData& rSalData, bool bAll)
{
while (TempFontItem* p = rSalData.mpOtherTempFontItem)
{
RemoveFontResourceExW(o3tl::toW(p->maFontResourcePath.getStr()), FR_PRIVATE, nullptr);
rSalData.mpOtherTempFontItem = p->mpNextItem;
delete p;
}
if (!bAll)
return;
while (TempFontItem* p = rSalData.mpSharedTempFontItem)
{
RemoveFontResourceExW(o3tl::toW(p->maFontResourcePath.getStr()), FR_PRIVATE, nullptr);
rSalData.mpSharedTempFontItem = p->mpNextItem;
delete p;
}
}
static OUString lcl_GetFontFamilyName(std::u16string_view rFontFileURL)
{
// Create temporary file name
OUString aTempFileURL;
if (osl::File::E_None != osl::File::createTempFile(nullptr, nullptr, &aTempFileURL))
return OUString();
osl::File::remove(aTempFileURL);
OUString aResSystemPath;
osl::FileBase::getSystemPathFromFileURL(aTempFileURL, aResSystemPath);
// Create font resource file (.fot)
// There is a limit of 127 characters for the full path passed via lpszFile, so we have to
// split the font URL and pass it as two parameters. As a result we can't use
// CreateScalableFontResource for renaming, as it now expects the font in the system path.
// But it's still good to use it for family name extraction, we're currently after.
// BTW: it doesn't help to prefix the lpszFile with \\?\ to support larger paths.
// TODO: use TTLoadEmbeddedFont (needs an EOT as input, so we have to add a header to the TTF)
// TODO: forward the EOT from the AddTempDevFont call side, if VCL supports it
INetURLObject aTTFUrl(rFontFileURL);
// GetBase() strips the extension
OUString aFilename = aTTFUrl.GetLastName(INetURLObject::DecodeMechanism::WithCharset);
if (!CreateScalableFontResourceW(0, o3tl::toW(aResSystemPath.getStr()),
o3tl::toW(aFilename.getStr()), o3tl::toW(aTTFUrl.GetPath().getStr())))
{
sal_uInt32 nError = GetLastError();
SAL_WARN("vcl.fonts", "CreateScalableFontResource failed for " << aResSystemPath << " "
<< aFilename << " " << aTTFUrl.GetPath() << " " << nError);
return OUString();
}
// Open and read the font resource file
osl::File aFotFile(aTempFileURL);
if (osl::FileBase::E_None != aFotFile.open(osl_File_OpenFlag_Read))
return OUString();
sal_uInt64 nBytesRead = 0;
char aBuffer[4096];
aFotFile.read( aBuffer, sizeof( aBuffer ), nBytesRead );
// clean up temporary resource file
aFotFile.close();
osl::File::remove(aTempFileURL);
// retrieve font family name from byte offset 0x4F6
static const sal_uInt64 nNameOfs = 0x4F6;
sal_uInt64 nPos = nNameOfs;
for (; (nPos < nBytesRead) && (aBuffer[nPos] != 0); nPos++);
if (nPos >= nBytesRead || (nPos == nNameOfs))
return OUString();
return OUString(aBuffer + nNameOfs, nPos - nNameOfs, osl_getThreadTextEncoding());
}
bool WinSalGraphics::AddTempDevFont(vcl::font::PhysicalFontCollection* pFontCollection,
const OUString& rFontFileURL, const OUString& rFontName)
{
OUString aFontFamily = lcl_GetFontFamilyName(rFontFileURL);
if (aFontFamily.isEmpty())
{
SAL_WARN("vcl.fonts", "error extracting font family from " << rFontFileURL);
return false;
}
if (rFontName != aFontFamily)
{
SAL_WARN("vcl.fonts", "font family renaming not implemented; skipping embedded " << rFontName);
return false;
}
int nFonts = lcl_AddFontResource(*GetSalData(), rFontFileURL, false);
if (nFonts <= 0)
return false;
ImplEnumInfo aInfo;
aInfo.mhDC = getHDC();
aInfo.mpList = pFontCollection;
aInfo.mpName = &aFontFamily;
aInfo.mbPrinter = mbPrinter;
aInfo.mnFontCount = pFontCollection->Count();
const int nExpectedFontCount = aInfo.mnFontCount + nFonts;
LOGFONTW aLogFont = {};
aLogFont.lfCharSet = DEFAULT_CHARSET;
aInfo.mpLogFont = &aLogFont;
// add the font to the PhysicalFontCollection
EnumFontFamiliesExW(getHDC(), &aLogFont,
SalEnumFontsProcExW, reinterpret_cast<LPARAM>(&aInfo), 0);
SAL_WARN_IF(nExpectedFontCount != pFontCollection->Count(), "vcl.fonts",
"temp font was registered but is not in enumeration: " << rFontFileURL);
return true;
}
void WinSalGraphics::GetDevFontList( vcl::font::PhysicalFontCollection* pFontCollection )
{
// make sure all LO shared fonts are registered temporarily
static std::once_flag init;
std::call_once(init, []()
{
auto registerFontsIn = [](const OUString& dir) {
// collect fonts in font path that could not be registered
osl::Directory aFontDir(dir);
osl::FileBase::RC rcOSL = aFontDir.open();
if (rcOSL == osl::FileBase::E_None)
{
osl::DirectoryItem aDirItem;
SalData* pSalData = GetSalData();
assert(pSalData);
while (aFontDir.getNextItem(aDirItem, 10) == osl::FileBase::E_None)
{
osl::FileStatus aFileStatus(osl_FileStatus_Mask_FileURL);
rcOSL = aDirItem.getFileStatus(aFileStatus);
if (rcOSL == osl::FileBase::E_None)
lcl_AddFontResource(*pSalData, aFileStatus.getFileURL(), true);
}
}
};
// determine font path
// since we are only interested in fonts that could not be
// registered before because of missing administration rights
// only the font path of the user installation is needed
OUString aPath("$BRAND_BASE_DIR");
rtl_bootstrap_expandMacros(&aPath.pData);
// internal font resources, required for normal operation, like OpenSymbol
registerFontsIn(aPath + "/" LIBO_SHARE_RESOURCE_FOLDER "/common/fonts");
// collect fonts in font path that could not be registered
registerFontsIn(aPath + "/" LIBO_SHARE_FOLDER "/fonts/truetype");
return true;
});
ImplEnumInfo aInfo;
aInfo.mhDC = getHDC();
aInfo.mpList = pFontCollection;
aInfo.mpName = nullptr;
aInfo.mbPrinter = mbPrinter;
aInfo.mnFontCount = 0;
LOGFONTW aLogFont = {};
aLogFont.lfCharSet = DEFAULT_CHARSET;
aInfo.mpLogFont = &aLogFont;
// fill the PhysicalFontCollection
EnumFontFamiliesExW( getHDC(), &aLogFont,
SalEnumFontsProcExW, reinterpret_cast<LPARAM>(&aInfo), 0 );
// set glyph fallback hook
static WinGlyphFallbackSubstititution aSubstFallback;
static WinPreMatchFontSubstititution aPreMatchFont;
pFontCollection->SetFallbackHook( &aSubstFallback );
pFontCollection->SetPreMatchHook(&aPreMatchFont);
}
void WinSalGraphics::ClearDevFontCache()
{
mWinSalGraphicsImplBase->ClearDevFontCache();
ImplReleaseTempFonts(*GetSalData(), false);
}
bool WinFontInstance::GetGlyphOutline(sal_GlyphId nId, basegfx::B2DPolyPolygon& rB2DPolyPoly, bool) const
{
rB2DPolyPoly.clear();
assert(m_pGraphics);
HDC hDC = m_pGraphics->getHDC();
const HFONT hOrigFont = static_cast<HFONT>(GetCurrentObject(hDC, OBJ_FONT));
const HFONT hFont = GetHFONT();
if (hFont != hOrigFont)
SelectObject(hDC, hFont);
const ::comphelper::ScopeGuard aFontRestoreScopeGuard([hFont, hOrigFont, hDC]()
{ if (hFont != hOrigFont) SelectObject(hDC, hOrigFont); });
// use unity matrix
MAT2 aMat;
aMat.eM11 = aMat.eM22 = FixedFromDouble( 1.0 );
aMat.eM12 = aMat.eM21 = FixedFromDouble( 0.0 );
UINT nGGOFlags = GGO_NATIVE;
nGGOFlags |= GGO_GLYPH_INDEX;
GLYPHMETRICS aGlyphMetrics;
const DWORD nSize1 = ::GetGlyphOutlineW(hDC, nId, nGGOFlags, &aGlyphMetrics, 0, nullptr, &aMat);
if( !nSize1 ) // blank glyphs are ok
return true;
else if( nSize1 == GDI_ERROR )
return false;
BYTE* pData = new BYTE[ nSize1 ];
const DWORD nSize2 = ::GetGlyphOutlineW(hDC, nId, nGGOFlags,
&aGlyphMetrics, nSize1, pData, &aMat );
if( nSize1 != nSize2 )
return false;
// TODO: avoid tools polygon by creating B2DPolygon directly
int nPtSize = 512;
Point* pPoints = new Point[ nPtSize ];
PolyFlags* pFlags = new PolyFlags[ nPtSize ];
TTPOLYGONHEADER* pHeader = reinterpret_cast<TTPOLYGONHEADER*>(pData);
while( reinterpret_cast<BYTE*>(pHeader) < pData+nSize2 )
{
// only outline data is interesting
if( pHeader->dwType != TT_POLYGON_TYPE )
break;
// get start point; next start points are end points
// of previous segment
sal_uInt16 nPnt = 0;
tools::Long nX = IntTimes256FromFixed( pHeader->pfxStart.x );
tools::Long nY = IntTimes256FromFixed( pHeader->pfxStart.y );
pPoints[ nPnt ] = Point( nX, nY );
pFlags[ nPnt++ ] = PolyFlags::Normal;
bool bHasOfflinePoints = false;
TTPOLYCURVE* pCurve = reinterpret_cast<TTPOLYCURVE*>( pHeader + 1 );
pHeader = reinterpret_cast<TTPOLYGONHEADER*>( reinterpret_cast<BYTE*>(pHeader) + pHeader->cb );
while( reinterpret_cast<BYTE*>(pCurve) < reinterpret_cast<BYTE*>(pHeader) )
{
int nNeededSize = nPnt + 16 + 3 * pCurve->cpfx;
if( nPtSize < nNeededSize )
{
Point* pOldPoints = pPoints;
PolyFlags* pOldFlags = pFlags;
nPtSize = 2 * nNeededSize;
pPoints = new Point[ nPtSize ];
pFlags = new PolyFlags[ nPtSize ];
for( sal_uInt16 i = 0; i < nPnt; ++i )
{
pPoints[ i ] = pOldPoints[ i ];
pFlags[ i ] = pOldFlags[ i ];
}
delete[] pOldPoints;
delete[] pOldFlags;
}
int i = 0;
if( TT_PRIM_LINE == pCurve->wType )
{
while( i < pCurve->cpfx )
{
nX = IntTimes256FromFixed( pCurve->apfx[ i ].x );
nY = IntTimes256FromFixed( pCurve->apfx[ i ].y );
++i;
pPoints[ nPnt ] = Point( nX, nY );
pFlags[ nPnt ] = PolyFlags::Normal;
++nPnt;
}
}
else if( TT_PRIM_QSPLINE == pCurve->wType )
{
bHasOfflinePoints = true;
while( i < pCurve->cpfx )
{
// get control point of quadratic bezier spline
nX = IntTimes256FromFixed( pCurve->apfx[ i ].x );
nY = IntTimes256FromFixed( pCurve->apfx[ i ].y );
++i;
Point aControlP( nX, nY );
// calculate first cubic control point
// P0 = 1/3 * (PBeg + 2 * PQControl)
nX = pPoints[ nPnt-1 ].X() + 2 * aControlP.X();
nY = pPoints[ nPnt-1 ].Y() + 2 * aControlP.Y();
pPoints[ nPnt+0 ] = Point( (2*nX+3)/6, (2*nY+3)/6 );
pFlags[ nPnt+0 ] = PolyFlags::Control;
// calculate endpoint of segment
nX = IntTimes256FromFixed( pCurve->apfx[ i ].x );
nY = IntTimes256FromFixed( pCurve->apfx[ i ].y );
if ( i+1 >= pCurve->cpfx )
{
// endpoint is either last point in segment => advance
++i;
}
else
{
// or endpoint is the middle of two control points
nX += IntTimes256FromFixed( pCurve->apfx[ i-1 ].x );
nY += IntTimes256FromFixed( pCurve->apfx[ i-1 ].y );
nX = (nX + 1) / 2;
nY = (nY + 1) / 2;
// no need to advance, because the current point
// is the control point in next bezier spline
}
pPoints[ nPnt+2 ] = Point( nX, nY );
pFlags[ nPnt+2 ] = PolyFlags::Normal;
// calculate second cubic control point
// P1 = 1/3 * (PEnd + 2 * PQControl)
nX = pPoints[ nPnt+2 ].X() + 2 * aControlP.X();
nY = pPoints[ nPnt+2 ].Y() + 2 * aControlP.Y();
pPoints[ nPnt+1 ] = Point( (2*nX+3)/6, (2*nY+3)/6 );
pFlags[ nPnt+1 ] = PolyFlags::Control;
nPnt += 3;
}
}
// next curve segment
pCurve = reinterpret_cast<TTPOLYCURVE*>(&pCurve->apfx[ i ]);
}
// end point is start point for closed contour
// disabled, because Polygon class closes the contour itself
// pPoints[nPnt++] = pPoints[0];
// #i35928#
// Added again, but add only when not yet closed
if(pPoints[nPnt - 1] != pPoints[0])
{
if( bHasOfflinePoints )
pFlags[nPnt] = pFlags[0];
pPoints[nPnt++] = pPoints[0];
}
// convert y-coordinates W32 -> VCL
for( int i = 0; i < nPnt; ++i )
pPoints[i].setY(-pPoints[i].Y());
// insert into polypolygon
tools::Polygon aPoly( nPnt, pPoints, (bHasOfflinePoints ? pFlags : nullptr) );
// convert to B2DPolyPolygon
// TODO: get rid of the intermediate PolyPolygon
rB2DPolyPoly.append( aPoly.getB2DPolygon() );
}
delete[] pPoints;
delete[] pFlags;
delete[] pData;
// rescaling needed for the tools::PolyPolygon conversion
if( rB2DPolyPoly.count() )
{
const double fFactor(1.0f/256);
rB2DPolyPoly.transform(basegfx::utils::createScaleB2DHomMatrix(fFactor, fFactor));
}
return true;
}
IDWriteFontFace* WinFontInstance::GetDWFontFace() const
{
if (!mxDWFontFace)
{
assert(m_pGraphics);
HDC hDC = m_pGraphics->getHDC();
const HFONT hOrigFont = static_cast<HFONT>(GetCurrentObject(hDC, OBJ_FONT));
const HFONT hFont = GetHFONT();
if (hFont != hOrigFont)
SelectObject(hDC, hFont);
const ::comphelper::ScopeGuard aFontRestoreScopeGuard([hFont, hOrigFont, hDC]() {
if (hFont != hOrigFont)
SelectObject(hDC, hOrigFont);
});
IDWriteGdiInterop* pDWriteGdiInterop = WinSalGraphics::getDWriteGdiInterop();
HRESULT hr = pDWriteGdiInterop->CreateFontFaceFromHdc(hDC, &mxDWFontFace);
if (FAILED(hr))
{
SAL_WARN("vcl.fonts", "HRESULT 0x" << OUString::number(hr, 16) << ": "
<< WindowsErrorStringFromHRESULT(hr));
mxDWFontFace = nullptr;
}
}
return mxDWFontFace;
}
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