diff options
Diffstat (limited to 'src/gui/text/windows/qwindowsfontdatabasebase.cpp')
| -rw-r--r-- | src/gui/text/windows/qwindowsfontdatabasebase.cpp | 1013 |
1 files changed, 1013 insertions, 0 deletions
diff --git a/src/gui/text/windows/qwindowsfontdatabasebase.cpp b/src/gui/text/windows/qwindowsfontdatabasebase.cpp new file mode 100644 index 0000000000..84e619b0d9 --- /dev/null +++ b/src/gui/text/windows/qwindowsfontdatabasebase.cpp @@ -0,0 +1,1013 @@ +// Copyright (C) 2020 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only + +#include "qwindowsfontdatabasebase_p.h" +#include "qwindowsfontdatabase_p.h" + +#include <QtCore/QThreadStorage> +#include <QtCore/QtEndian> + +#if QT_CONFIG(directwrite) +# if QT_CONFIG(directwrite3) +# include <dwrite_3.h> +# else +# include <dwrite_2.h> +# endif +# include <d2d1.h> +# include "qwindowsfontenginedirectwrite_p.h" +#endif + +QT_BEGIN_NAMESPACE + +using namespace Qt::StringLiterals; + +// Helper classes for creating font engines directly from font data +namespace { + +# pragma pack(1) + + // Common structure for all formats of the "name" table + struct NameTable + { + quint16 format; + quint16 count; + quint16 stringOffset; + }; + + struct NameRecord + { + quint16 platformID; + quint16 encodingID; + quint16 languageID; + quint16 nameID; + quint16 length; + quint16 offset; + }; + + struct OffsetSubTable + { + quint32 scalerType; + quint16 numTables; + quint16 searchRange; + quint16 entrySelector; + quint16 rangeShift; + }; + + struct TableDirectory : public QWindowsFontDatabaseBase::FontTable + { + quint32 identifier; + quint32 checkSum; + quint32 offset; + quint32 length; + }; + + struct OS2Table + { + quint16 version; + qint16 avgCharWidth; + quint16 weightClass; + quint16 widthClass; + quint16 type; + qint16 subscriptXSize; + qint16 subscriptYSize; + qint16 subscriptXOffset; + qint16 subscriptYOffset; + qint16 superscriptXSize; + qint16 superscriptYSize; + qint16 superscriptXOffset; + qint16 superscriptYOffset; + qint16 strikeOutSize; + qint16 strikeOutPosition; + qint16 familyClass; + quint8 panose[10]; + quint32 unicodeRanges[4]; + quint8 vendorID[4]; + quint16 selection; + quint16 firstCharIndex; + quint16 lastCharIndex; + qint16 typoAscender; + qint16 typoDescender; + qint16 typoLineGap; + quint16 winAscent; + quint16 winDescent; + quint32 codepageRanges[2]; + qint16 height; + qint16 capHeight; + quint16 defaultChar; + quint16 breakChar; + quint16 maxContext; + }; + +# pragma pack() + +} // Anonymous namespace + +QWindowsFontDatabaseBase::FontTable *QWindowsFontDatabaseBase::EmbeddedFont::tableDirectoryEntry(const QByteArray &tagName) +{ + Q_ASSERT(tagName.size() == 4); + quint32 tagId = *(reinterpret_cast<const quint32 *>(tagName.constData())); + const size_t fontDataSize = m_fontData.size(); + if (Q_UNLIKELY(fontDataSize < sizeof(OffsetSubTable))) + return nullptr; + + OffsetSubTable *offsetSubTable = reinterpret_cast<OffsetSubTable *>(m_fontData.data()); + TableDirectory *tableDirectory = reinterpret_cast<TableDirectory *>(offsetSubTable + 1); + + const size_t tableCount = qFromBigEndian<quint16>(offsetSubTable->numTables); + if (Q_UNLIKELY(fontDataSize < sizeof(OffsetSubTable) + sizeof(TableDirectory) * tableCount)) + return nullptr; + + TableDirectory *tableDirectoryEnd = tableDirectory + tableCount; + for (TableDirectory *entry = tableDirectory; entry < tableDirectoryEnd; ++entry) { + if (entry->identifier == tagId) + return entry; + } + + return nullptr; +} + +QString QWindowsFontDatabaseBase::EmbeddedFont::familyName(QWindowsFontDatabaseBase::FontTable *directoryEntry) +{ + QString name; + + TableDirectory *nameTableDirectoryEntry = static_cast<TableDirectory *>(directoryEntry); + if (nameTableDirectoryEntry == nullptr) + nameTableDirectoryEntry = static_cast<TableDirectory *>(tableDirectoryEntry("name")); + + if (nameTableDirectoryEntry != nullptr) { + quint32 offset = qFromBigEndian<quint32>(nameTableDirectoryEntry->offset); + if (Q_UNLIKELY(quint32(m_fontData.size()) < offset + sizeof(NameTable))) + return QString(); + + NameTable *nameTable = reinterpret_cast<NameTable *>(m_fontData.data() + offset); + NameRecord *nameRecord = reinterpret_cast<NameRecord *>(nameTable + 1); + + quint16 nameTableCount = qFromBigEndian<quint16>(nameTable->count); + if (Q_UNLIKELY(quint32(m_fontData.size()) < offset + sizeof(NameRecord) * nameTableCount)) + return QString(); + + for (int i = 0; i < nameTableCount; ++i, ++nameRecord) { + if (qFromBigEndian<quint16>(nameRecord->nameID) == 1 + && qFromBigEndian<quint16>(nameRecord->platformID) == 3 // Windows + && qFromBigEndian<quint16>(nameRecord->languageID) == 0x0409) { // US English + quint16 stringOffset = qFromBigEndian<quint16>(nameTable->stringOffset); + quint16 nameOffset = qFromBigEndian<quint16>(nameRecord->offset); + quint16 nameLength = qFromBigEndian<quint16>(nameRecord->length); + + if (Q_UNLIKELY(quint32(m_fontData.size()) < offset + stringOffset + nameOffset + nameLength)) + return QString(); + + const void *ptr = reinterpret_cast<const quint8 *>(nameTable) + + stringOffset + + nameOffset; + + const quint16 *s = reinterpret_cast<const quint16 *>(ptr); + const quint16 *e = s + nameLength / sizeof(quint16); + while (s != e) + name += QChar( qFromBigEndian<quint16>(*s++)); + break; + } + } + } + + return name; +} + +void QWindowsFontDatabaseBase::EmbeddedFont::updateFromOS2Table(QFontEngine *fontEngine) +{ + TableDirectory *os2TableEntry = static_cast<TableDirectory *>(tableDirectoryEntry("OS/2")); + if (os2TableEntry != nullptr) { + const OS2Table *os2Table = + reinterpret_cast<const OS2Table *>(m_fontData.constData() + + qFromBigEndian<quint32>(os2TableEntry->offset)); + + bool italic = qFromBigEndian<quint16>(os2Table->selection) & (1 << 0); + bool oblique = qFromBigEndian<quint16>(os2Table->selection) & (1 << 9); + + if (italic) + fontEngine->fontDef.style = QFont::StyleItalic; + else if (oblique) + fontEngine->fontDef.style = QFont::StyleOblique; + else + fontEngine->fontDef.style = QFont::StyleNormal; + + fontEngine->fontDef.weight = qFromBigEndian<quint16>(os2Table->weightClass); + } +} + +QString QWindowsFontDatabaseBase::EmbeddedFont::changeFamilyName(const QString &newFamilyName) +{ + TableDirectory *nameTableDirectoryEntry = static_cast<TableDirectory *>(tableDirectoryEntry("name")); + if (nameTableDirectoryEntry == nullptr) + return QString(); + + QString oldFamilyName = familyName(nameTableDirectoryEntry); + + // Reserve size for name table header, five required name records and string + const int requiredRecordCount = 5; + quint16 nameIds[requiredRecordCount] = { 1, 2, 3, 4, 6 }; + + int sizeOfHeader = sizeof(NameTable) + sizeof(NameRecord) * requiredRecordCount; + int newFamilyNameSize = newFamilyName.size() * int(sizeof(quint16)); + + const QString regularString = QString::fromLatin1("Regular"); + int regularStringSize = regularString.size() * int(sizeof(quint16)); + + // Align table size of table to 32 bits (pad with 0) + int fullSize = ((sizeOfHeader + newFamilyNameSize + regularStringSize) & ~3) + 4; + + QByteArray newNameTable(fullSize, char(0)); + + { + NameTable *nameTable = reinterpret_cast<NameTable *>(newNameTable.data()); + nameTable->count = qbswap<quint16>(requiredRecordCount); + nameTable->stringOffset = qbswap<quint16>(sizeOfHeader); + + NameRecord *nameRecord = reinterpret_cast<NameRecord *>(nameTable + 1); + for (int i = 0; i < requiredRecordCount; ++i, nameRecord++) { + nameRecord->nameID = qbswap<quint16>(nameIds[i]); + nameRecord->encodingID = qbswap<quint16>(1); + nameRecord->languageID = qbswap<quint16>(0x0409); + nameRecord->platformID = qbswap<quint16>(3); + nameRecord->length = qbswap<quint16>(newFamilyNameSize); + + // Special case for sub-family + if (nameIds[i] == 4) { + nameRecord->offset = qbswap<quint16>(newFamilyNameSize); + nameRecord->length = qbswap<quint16>(regularStringSize); + } + } + + // nameRecord now points to string data + quint16 *stringStorage = reinterpret_cast<quint16 *>(nameRecord); + for (QChar ch : newFamilyName) + *stringStorage++ = qbswap<quint16>(quint16(ch.unicode())); + + for (QChar ch : regularString) + *stringStorage++ = qbswap<quint16>(quint16(ch.unicode())); + } + + quint32 *p = reinterpret_cast<quint32 *>(newNameTable.data()); + quint32 *tableEnd = reinterpret_cast<quint32 *>(newNameTable.data() + fullSize); + + quint32 checkSum = 0; + while (p < tableEnd) + checkSum += qFromBigEndian<quint32>(*(p++)); + + nameTableDirectoryEntry->checkSum = qbswap<quint32>(checkSum); + nameTableDirectoryEntry->offset = qbswap<quint32>(m_fontData.size()); + nameTableDirectoryEntry->length = qbswap<quint32>(fullSize); + + m_fontData.append(newNameTable); + + return oldFamilyName; +} + +#if QT_CONFIG(directwrite) && QT_CONFIG(direct2d) + +namespace { + class DirectWriteFontFileStream: public IDWriteFontFileStream + { + Q_DISABLE_COPY(DirectWriteFontFileStream) + public: + DirectWriteFontFileStream(const QByteArray &fontData) + : m_fontData(fontData) + , m_referenceCount(0) + { + } + virtual ~DirectWriteFontFileStream() + { + } + + HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void **object) override; + ULONG STDMETHODCALLTYPE AddRef() override; + ULONG STDMETHODCALLTYPE Release() override; + + HRESULT STDMETHODCALLTYPE ReadFileFragment(const void **fragmentStart, UINT64 fileOffset, + UINT64 fragmentSize, OUT void **fragmentContext) override; + void STDMETHODCALLTYPE ReleaseFileFragment(void *fragmentContext) override; + HRESULT STDMETHODCALLTYPE GetFileSize(OUT UINT64 *fileSize) override; + HRESULT STDMETHODCALLTYPE GetLastWriteTime(OUT UINT64 *lastWriteTime) override; + + private: + QByteArray m_fontData; + ULONG m_referenceCount; + }; + + HRESULT STDMETHODCALLTYPE DirectWriteFontFileStream::QueryInterface(REFIID iid, void **object) + { + if (iid == IID_IUnknown || iid == __uuidof(IDWriteFontFileStream)) { + *object = this; + AddRef(); + return S_OK; + } else { + *object = NULL; + return E_NOINTERFACE; + } + } + + ULONG STDMETHODCALLTYPE DirectWriteFontFileStream::AddRef() + { + return InterlockedIncrement(&m_referenceCount); + } + + ULONG STDMETHODCALLTYPE DirectWriteFontFileStream::Release() + { + ULONG newCount = InterlockedDecrement(&m_referenceCount); + if (newCount == 0) + delete this; + return newCount; + } + + HRESULT STDMETHODCALLTYPE DirectWriteFontFileStream::ReadFileFragment( + const void **fragmentStart, + UINT64 fileOffset, + UINT64 fragmentSize, + OUT void **fragmentContext) + { + *fragmentContext = NULL; + if (fileOffset + fragmentSize <= quint64(m_fontData.size())) { + *fragmentStart = m_fontData.data() + fileOffset; + return S_OK; + } else { + *fragmentStart = NULL; + return E_FAIL; + } + } + + void STDMETHODCALLTYPE DirectWriteFontFileStream::ReleaseFileFragment(void *) + { + } + + HRESULT STDMETHODCALLTYPE DirectWriteFontFileStream::GetFileSize(UINT64 *fileSize) + { + *fileSize = m_fontData.size(); + return S_OK; + } + + HRESULT STDMETHODCALLTYPE DirectWriteFontFileStream::GetLastWriteTime(UINT64 *lastWriteTime) + { + *lastWriteTime = 0; + return E_NOTIMPL; + } + + class DirectWriteFontFileLoader: public IDWriteFontFileLoader + { + public: + DirectWriteFontFileLoader() : m_referenceCount(0) {} + virtual ~DirectWriteFontFileLoader() + { + } + + inline void addKey(const QByteArray &fontData) + { + if (!m_fontDatas.contains(fontData.data())) + m_fontDatas.insert(fontData.data(), fontData); + } + + inline void removeKey(const void *key) + { + m_fontDatas.remove(key); + } + + HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void **object) override; + ULONG STDMETHODCALLTYPE AddRef() override; + ULONG STDMETHODCALLTYPE Release() override; + + HRESULT STDMETHODCALLTYPE CreateStreamFromKey(void const *fontFileReferenceKey, + UINT32 fontFileReferenceKeySize, + OUT IDWriteFontFileStream **fontFileStream) override; + + void clear() + { + m_fontDatas.clear(); + } + + private: + ULONG m_referenceCount; + QHash<const void *, QByteArray> m_fontDatas; + }; + + HRESULT STDMETHODCALLTYPE DirectWriteFontFileLoader::QueryInterface(const IID &iid, + void **object) + { + if (iid == IID_IUnknown || iid == __uuidof(IDWriteFontFileLoader)) { + *object = this; + AddRef(); + return S_OK; + } else { + *object = NULL; + return E_NOINTERFACE; + } + } + + ULONG STDMETHODCALLTYPE DirectWriteFontFileLoader::AddRef() + { + return InterlockedIncrement(&m_referenceCount); + } + + ULONG STDMETHODCALLTYPE DirectWriteFontFileLoader::Release() + { + ULONG newCount = InterlockedDecrement(&m_referenceCount); + if (newCount == 0) + delete this; + return newCount; + } + + HRESULT STDMETHODCALLTYPE DirectWriteFontFileLoader::CreateStreamFromKey( + void const *fontFileReferenceKey, + UINT32 fontFileReferenceKeySize, + IDWriteFontFileStream **fontFileStream) + { + Q_UNUSED(fontFileReferenceKeySize); + + if (fontFileReferenceKeySize != sizeof(const void *)) { + qWarning("%s: Wrong key size", __FUNCTION__); + return E_FAIL; + } + + const void *key = *reinterpret_cast<void * const *>(fontFileReferenceKey); + *fontFileStream = NULL; + auto it = m_fontDatas.constFind(key); + if (it == m_fontDatas.constEnd()) + return E_FAIL; + + QByteArray fontData = it.value(); + DirectWriteFontFileStream *stream = new DirectWriteFontFileStream(fontData); + stream->AddRef(); + *fontFileStream = stream; + + return S_OK; + } + +} // Anonymous namespace + +class QCustomFontFileLoader +{ +public: + QCustomFontFileLoader(IDWriteFactory *factory) + { + m_directWriteFactory = factory; + + if (m_directWriteFactory) { + m_directWriteFactory->AddRef(); + + m_directWriteFontFileLoader = new DirectWriteFontFileLoader(); + m_directWriteFactory->RegisterFontFileLoader(m_directWriteFontFileLoader); + } + } + + ~QCustomFontFileLoader() + { + clear(); + + if (m_directWriteFactory != nullptr && m_directWriteFontFileLoader != nullptr) + m_directWriteFactory->UnregisterFontFileLoader(m_directWriteFontFileLoader); + + if (m_directWriteFactory != nullptr) + m_directWriteFactory->Release(); + } + + void addKey(const QByteArray &fontData) + { + if (m_directWriteFontFileLoader != nullptr) + m_directWriteFontFileLoader->addKey(fontData); + } + + void removeKey(const void *key) + { + if (m_directWriteFontFileLoader != nullptr) + m_directWriteFontFileLoader->removeKey(key); + } + + IDWriteFontFileLoader *loader() const + { + return m_directWriteFontFileLoader; + } + + void clear() + { + if (m_directWriteFontFileLoader != nullptr) + m_directWriteFontFileLoader->clear(); + } + +private: + IDWriteFactory *m_directWriteFactory = nullptr; + DirectWriteFontFileLoader *m_directWriteFontFileLoader = nullptr; +}; + + +#endif // directwrite && direct2d + + +QWindowsFontEngineData::~QWindowsFontEngineData() +{ + if (hdc) + DeleteDC(hdc); + +#if QT_CONFIG(directwrite) && QT_CONFIG(direct2d) + if (directWriteGdiInterop) + directWriteGdiInterop->Release(); + if (directWriteFactory) + directWriteFactory->Release(); +#endif +} + +QWindowsFontDatabaseBase::QWindowsFontDatabaseBase() +{ +} + +QWindowsFontDatabaseBase::~QWindowsFontDatabaseBase() +{ +} + +typedef QSharedPointer<QWindowsFontEngineData> QWindowsFontEngineDataPtr; +typedef QThreadStorage<QWindowsFontEngineDataPtr> FontEngineThreadLocalData; +Q_GLOBAL_STATIC(FontEngineThreadLocalData, fontEngineThreadLocalData) + +QSharedPointer<QWindowsFontEngineData> QWindowsFontDatabaseBase::data() +{ + FontEngineThreadLocalData *data = fontEngineThreadLocalData(); + if (!data->hasLocalData()) + data->setLocalData(QSharedPointer<QWindowsFontEngineData>::create()); + + if (!init(data->localData())) + qCWarning(lcQpaFonts) << "Cannot initialize common font database data"; + + return data->localData(); +} + +bool QWindowsFontDatabaseBase::init(QSharedPointer<QWindowsFontEngineData> d) +{ +#if QT_CONFIG(directwrite) && QT_CONFIG(direct2d) + if (!d->directWriteFactory) { + createDirectWriteFactory(&d->directWriteFactory); + if (!d->directWriteFactory) + return false; + } + if (!d->directWriteGdiInterop) { + const HRESULT hr = d->directWriteFactory->GetGdiInterop(&d->directWriteGdiInterop); + if (FAILED(hr)) { + qErrnoWarning("%s: GetGdiInterop failed", __FUNCTION__); + return false; + } + } +#else + Q_UNUSED(d); +#endif // directwrite && direct2d + return true; +} + +#if QT_CONFIG(directwrite) && QT_CONFIG(direct2d) +void QWindowsFontDatabaseBase::createDirectWriteFactory(IDWriteFactory **factory) +{ + *factory = nullptr; + IUnknown *result = nullptr; + +# if QT_CONFIG(directwrite3) + qCDebug(lcQpaFonts) << "Trying to create IDWriteFactory6"; + DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory6), &result); + + if (result == nullptr) { + qCDebug(lcQpaFonts) << "Trying to create IDWriteFactory5"; + DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory5), &result); + } + + if (result == nullptr) { + qCDebug(lcQpaFonts) << "Trying to create IDWriteFactory3"; + DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory3), &result); + } +# endif + + if (result == nullptr) { + qCDebug(lcQpaFonts) << "Trying to create IDWriteFactory2"; + DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory2), &result); + } + + if (result == nullptr) { + qCDebug(lcQpaFonts) << "Trying to create plain IDWriteFactory"; + if (FAILED(DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory), &result))) { + qErrnoWarning("DWriteCreateFactory failed"); + return; + } + } + + *factory = static_cast<IDWriteFactory *>(result); +} +#endif // directwrite && direct2d + +int QWindowsFontDatabaseBase::defaultVerticalDPI() +{ + return 96; +} + +LOGFONT QWindowsFontDatabaseBase::fontDefToLOGFONT(const QFontDef &request, const QString &faceName) +{ + LOGFONT lf; + memset(&lf, 0, sizeof(LOGFONT)); + + lf.lfHeight = -qRound(request.pixelSize); + lf.lfWidth = 0; + lf.lfEscapement = 0; + lf.lfOrientation = 0; + if (request.weight == QFont::Normal) + lf.lfWeight = FW_DONTCARE; + else + lf.lfWeight = request.weight; + lf.lfItalic = request.style != QFont::StyleNormal; + lf.lfCharSet = DEFAULT_CHARSET; + + int strat = OUT_DEFAULT_PRECIS; + if (request.styleStrategy & QFont::PreferBitmap) { + strat = OUT_RASTER_PRECIS; + } else if (request.styleStrategy & QFont::PreferDevice) { + strat = OUT_DEVICE_PRECIS; + } else if (request.styleStrategy & QFont::PreferOutline) { + strat = OUT_OUTLINE_PRECIS; + } else if (request.styleStrategy & QFont::ForceOutline) { + strat = OUT_TT_ONLY_PRECIS; + } + + lf.lfOutPrecision = strat; + + int qual = DEFAULT_QUALITY; + + if (request.styleStrategy & QFont::PreferMatch) + qual = DRAFT_QUALITY; + else if (request.styleStrategy & QFont::PreferQuality) + qual = PROOF_QUALITY; + + if (request.styleStrategy & QFont::PreferAntialias) { + qual = (request.styleStrategy & QFont::NoSubpixelAntialias) == 0 + ? CLEARTYPE_QUALITY : ANTIALIASED_QUALITY; + } else if (request.styleStrategy & QFont::NoAntialias) { + qual = NONANTIALIASED_QUALITY; + } else if ((request.styleStrategy & QFont::NoSubpixelAntialias) && data()->clearTypeEnabled) { + qual = ANTIALIASED_QUALITY; + } + + lf.lfQuality = qual; + + lf.lfClipPrecision = CLIP_DEFAULT_PRECIS; + + int hint = FF_DONTCARE; + switch (request.styleHint) { + case QFont::Helvetica: + hint = FF_SWISS; + break; + case QFont::Times: + hint = FF_ROMAN; + break; + case QFont::Courier: + hint = FF_MODERN; + break; + case QFont::OldEnglish: + hint = FF_DECORATIVE; + break; + case QFont::System: + hint = FF_MODERN; + break; + default: + break; + } + + lf.lfPitchAndFamily = DEFAULT_PITCH | hint; + + QString fam = faceName; + if (fam.isEmpty()) + fam = request.families.first(); + if (Q_UNLIKELY(fam.size() >= LF_FACESIZE)) { + qCritical("%s: Family name '%s' is too long.", __FUNCTION__, qPrintable(fam)); + fam.truncate(LF_FACESIZE - 1); + } + + memcpy(lf.lfFaceName, fam.utf16(), fam.size() * sizeof(wchar_t)); + + return lf; +} + +QFont QWindowsFontDatabaseBase::LOGFONT_to_QFont(const LOGFONT& logFont, int verticalDPI_In) +{ + if (verticalDPI_In <= 0) + verticalDPI_In = defaultVerticalDPI(); + QFont qFont(QString::fromWCharArray(logFont.lfFaceName)); + qFont.setItalic(logFont.lfItalic); + if (logFont.lfWeight != FW_DONTCARE) + qFont.setWeight(QFont::Weight(logFont.lfWeight)); + const qreal logFontHeight = qAbs(logFont.lfHeight); + qFont.setPointSizeF(logFontHeight * 72.0 / qreal(verticalDPI_In)); + qFont.setUnderline(logFont.lfUnderline); + qFont.setOverline(false); + qFont.setStrikeOut(logFont.lfStrikeOut); + return qFont; +} + +// ### fixme Qt 6 (QTBUG-58610): See comment at QWindowsFontDatabase::systemDefaultFont() +HFONT QWindowsFontDatabaseBase::systemFont() +{ + static const auto stock_sysfont = + reinterpret_cast<HFONT>(GetStockObject(DEFAULT_GUI_FONT)); + return stock_sysfont; +} + +QFont QWindowsFontDatabaseBase::systemDefaultFont() +{ + // Qt 6: Obtain default GUI font (typically "Segoe UI, 9pt", see QTBUG-58610) + NONCLIENTMETRICS ncm = {}; + ncm.cbSize = sizeof(ncm); + SystemParametersInfoForDpi(SPI_GETNONCLIENTMETRICS, ncm.cbSize, &ncm, 0, defaultVerticalDPI()); + const QFont systemFont = QWindowsFontDatabase::LOGFONT_to_QFont(ncm.lfMessageFont); + qCDebug(lcQpaFonts) << __FUNCTION__ << systemFont; + return systemFont; +} + +void QWindowsFontDatabaseBase::invalidate() +{ +#if QT_CONFIG(directwrite) + m_fontFileLoader.reset(nullptr); +#endif +} + +#if QT_CONFIG(directwrite) && QT_CONFIG(direct2d) +IDWriteFontFace *QWindowsFontDatabaseBase::createDirectWriteFace(const QByteArray &fontData) +{ + QList<IDWriteFontFace *> faces = createDirectWriteFaces(fontData, false); + Q_ASSERT(faces.size() <= 1); + + return faces.isEmpty() ? nullptr : faces.first(); +} + +QList<IDWriteFontFace *> QWindowsFontDatabaseBase::createDirectWriteFaces(const QByteArray &fontData, + bool queryVariations) const +{ + QList<IDWriteFontFace *> ret; + QSharedPointer<QWindowsFontEngineData> fontEngineData = data(); + if (fontEngineData->directWriteFactory == nullptr) { + qCWarning(lcQpaFonts) << "DirectWrite factory not created in QWindowsFontDatabaseBase::createDirectWriteFace()"; + return ret; + } + + if (m_fontFileLoader == nullptr) + m_fontFileLoader.reset(new QCustomFontFileLoader(fontEngineData->directWriteFactory)); + + m_fontFileLoader->addKey(fontData); + + IDWriteFontFile *fontFile = nullptr; + const void *key = fontData.data(); + + HRESULT hres = fontEngineData->directWriteFactory->CreateCustomFontFileReference(&key, + sizeof(void *), + m_fontFileLoader->loader(), + &fontFile); + if (FAILED(hres)) { + qErrnoWarning(hres, "%s: CreateCustomFontFileReference failed", __FUNCTION__); + return ret; + } + + BOOL isSupportedFontType; + DWRITE_FONT_FILE_TYPE fontFileType; + DWRITE_FONT_FACE_TYPE fontFaceType; + UINT32 numberOfFaces; + fontFile->Analyze(&isSupportedFontType, &fontFileType, &fontFaceType, &numberOfFaces); + if (!isSupportedFontType) { + fontFile->Release(); + return ret; + } + +#if QT_CONFIG(directwrite3) + IDWriteFactory5 *factory5 = nullptr; + if (queryVariations && SUCCEEDED(fontEngineData->directWriteFactory->QueryInterface(__uuidof(IDWriteFactory5), + reinterpret_cast<void **>(&factory5)))) { + + IDWriteFontSetBuilder1 *builder; + if (SUCCEEDED(factory5->CreateFontSetBuilder(&builder))) { + if (SUCCEEDED(builder->AddFontFile(fontFile))) { + IDWriteFontSet *fontSet; + if (SUCCEEDED(builder->CreateFontSet(&fontSet))) { + int count = fontSet->GetFontCount(); + qCDebug(lcQpaFonts) << "Found" << count << "variations in font file"; + for (int i = 0; i < count; ++i) { + IDWriteFontFaceReference *ref; + if (SUCCEEDED(fontSet->GetFontFaceReference(i, &ref))) { + IDWriteFontFace3 *face; + if (SUCCEEDED(ref->CreateFontFace(&face))) { + ret.append(face); + } + ref->Release(); + } + } + fontSet->Release(); + } + } + + builder->Release(); + } + + factory5->Release(); + } +#else + Q_UNUSED(queryVariations); +#endif + + // ### Currently no support for .ttc, but we could easily return a list here. + if (ret.isEmpty()) { + IDWriteFontFace *directWriteFontFace = nullptr; + hres = fontEngineData->directWriteFactory->CreateFontFace(fontFaceType, + 1, + &fontFile, + 0, + DWRITE_FONT_SIMULATIONS_NONE, + &directWriteFontFace); + if (FAILED(hres)) { + qErrnoWarning(hres, "%s: CreateFontFace failed", __FUNCTION__); + fontFile->Release(); + return ret; + } else { + ret.append(directWriteFontFace); + } + } + + fontFile->Release(); + + return ret; +} +#endif // directwrite && direct2d + +QFontEngine *QWindowsFontDatabaseBase::fontEngine(const QFontDef &fontDef, void *handle) +{ + // This function was apparently not used before, and probably isn't now either, + // call the base implementation which just prints that it's not supported. + return QPlatformFontDatabase::fontEngine(fontDef, handle); +} + +QFontEngine *QWindowsFontDatabaseBase::fontEngine(const QByteArray &fontData, qreal pixelSize, QFont::HintingPreference hintingPreference) +{ + QFontEngine *fontEngine = nullptr; + +#if QT_CONFIG(directwrite) && QT_CONFIG(direct2d) + QSharedPointer<QWindowsFontEngineData> fontEngineData = data(); + if (fontEngineData->directWriteFactory == nullptr) + return nullptr; + + IDWriteFontFace * directWriteFontFace = createDirectWriteFace(fontData); + if (directWriteFontFace == nullptr) + return nullptr; + + fontEngine = new QWindowsFontEngineDirectWrite(directWriteFontFace, + pixelSize, + fontEngineData); + + // Get font family from font data + EmbeddedFont font(fontData); + font.updateFromOS2Table(fontEngine); + fontEngine->fontDef.families = QStringList(font.familyName()); + fontEngine->fontDef.hintingPreference = hintingPreference; + + directWriteFontFace->Release(); +#else // directwrite && direct2d + Q_UNUSED(fontData); + Q_UNUSED(pixelSize); + Q_UNUSED(hintingPreference); +#endif + + return fontEngine; +} + +QString QWindowsFontDatabaseBase::familyForStyleHint(QFont::StyleHint styleHint) +{ + switch (styleHint) { + case QFont::Times: + return QStringLiteral("Times New Roman"); + case QFont::Courier: + return QStringLiteral("Courier New"); + case QFont::Monospace: + return QStringLiteral("Courier New"); + case QFont::Cursive: + return QStringLiteral("Comic Sans MS"); + case QFont::Fantasy: + return QStringLiteral("Impact"); + case QFont::Decorative: + return QStringLiteral("Old English"); + case QFont::Helvetica: + return QStringLiteral("Arial"); + case QFont::System: + default: + break; + } + return QStringLiteral("Tahoma"); +} + +// Creation functions + +static const char *other_tryFonts[] = { + "Arial", + "MS UI Gothic", + "Gulim", + "SimSun", + "PMingLiU", + "Arial Unicode MS", + 0 +}; + +static const char *jp_tryFonts [] = { + "Yu Gothic UI", + "MS UI Gothic", + "Arial", + "Gulim", + "SimSun", + "PMingLiU", + "Arial Unicode MS", + 0 +}; + +static const char *ch_CN_tryFonts [] = { + "SimSun", + "Arial", + "PMingLiU", + "Gulim", + "MS UI Gothic", + "Arial Unicode MS", + 0 +}; + +static const char *ch_TW_tryFonts [] = { + "PMingLiU", + "Arial", + "SimSun", + "Gulim", + "MS UI Gothic", + "Arial Unicode MS", + 0 +}; + +static const char *kr_tryFonts[] = { + "Gulim", + "Arial", + "PMingLiU", + "SimSun", + "MS UI Gothic", + "Arial Unicode MS", + 0 +}; + +static const char **tryFonts = nullptr; + +QStringList QWindowsFontDatabaseBase::extraTryFontsForFamily(const QString &family) +{ + QStringList result; + if (!QFontDatabase::writingSystems(family).contains(QFontDatabase::Symbol)) { + if (!tryFonts) { + LANGID lid = GetUserDefaultLangID(); + switch (lid&0xff) { + case LANG_CHINESE: // Chinese + if ( lid == 0x0804 || lid == 0x1004) // China mainland and Singapore + tryFonts = ch_CN_tryFonts; + else + tryFonts = ch_TW_tryFonts; // Taiwan, Hong Kong and Macau + break; + case LANG_JAPANESE: + tryFonts = jp_tryFonts; + break; + case LANG_KOREAN: + tryFonts = kr_tryFonts; + break; + default: + tryFonts = other_tryFonts; + break; + } + } + const QStringList families = QFontDatabase::families(); + const char **tf = tryFonts; + while (tf && *tf) { + // QTBUG-31689, family might be an English alias for a localized font name. + const QString family = QString::fromLatin1(*tf); + if (families.contains(family) || QFontDatabase::hasFamily(family)) + result << family; + ++tf; + } + } + result.append(QStringLiteral("Segoe UI Emoji")); + result.append(QStringLiteral("Segoe UI Symbol")); + return result; +} + +QFontDef QWindowsFontDatabaseBase::sanitizeRequest(QFontDef request) const +{ + QFontDef req = request; + const QString fam = request.families.front(); + if (fam.isEmpty()) + req.families[0] = QStringLiteral("MS Sans Serif"); + + if (fam == "MS Sans Serif"_L1) { + int height = -qRound(request.pixelSize); + // MS Sans Serif has bearing problems in italic, and does not scale + if (request.style == QFont::StyleItalic || (height > 18 && height != 24)) + req.families[0] = QStringLiteral("Arial"); + } + + if (!(request.styleStrategy & QFont::StyleStrategy::PreferBitmap) && fam == u"Courier") + req.families[0] = QStringLiteral("Courier New"); + return req; +} + +QT_END_NAMESPACE |