diff options
Diffstat (limited to 'src/widgets/platforms/win/qrawfont_win.cpp')
| -rw-r--r-- | src/widgets/platforms/win/qrawfont_win.cpp | 709 |
1 files changed, 709 insertions, 0 deletions
diff --git a/src/widgets/platforms/win/qrawfont_win.cpp b/src/widgets/platforms/win/qrawfont_win.cpp new file mode 100644 index 0000000000..d8aa557975 --- /dev/null +++ b/src/widgets/platforms/win/qrawfont_win.cpp @@ -0,0 +1,709 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the test suite of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qrawfont_p.h" +#include <private/qsystemlibrary_p.h> + +#if !defined(QT_NO_DIRECTWRITE) +# include "qfontenginedirectwrite_p.h" +# include <dwrite.h> +#endif + +#if !defined(QT_NO_RAWFONT) + +QT_BEGIN_NAMESPACE + +namespace { + + template<typename T> + struct BigEndian + { + quint8 data[sizeof(T)]; + + operator T() const + { + T littleEndian = 0; + for (int i=0; i<sizeof(T); ++i) { + littleEndian |= data[i] << ((sizeof(T) - i - 1) * 8); + } + + return littleEndian; + } + + BigEndian<T> &operator=(const T &t) + { + for (int i=0; i<sizeof(T); ++i) { + data[i] = ((t >> (sizeof(T) - i - 1) * 8) & 0xff); + } + + return *this; + } + }; + +# pragma pack(1) + + // Common structure for all formats of the "name" table + struct NameTable + { + BigEndian<quint16> format; + BigEndian<quint16> count; + BigEndian<quint16> stringOffset; + }; + + struct NameRecord + { + BigEndian<quint16> platformID; + BigEndian<quint16> encodingID; + BigEndian<quint16> languageID; + BigEndian<quint16> nameID; + BigEndian<quint16> length; + BigEndian<quint16> offset; + }; + + struct OffsetSubTable + { + BigEndian<quint32> scalerType; + BigEndian<quint16> numTables; + BigEndian<quint16> searchRange; + BigEndian<quint16> entrySelector; + BigEndian<quint16> rangeShift; + }; + + struct TableDirectory + { + BigEndian<quint32> identifier; + BigEndian<quint32> checkSum; + BigEndian<quint32> offset; + BigEndian<quint32> length; + }; + + struct OS2Table + { + BigEndian<quint16> version; + BigEndian<qint16> avgCharWidth; + BigEndian<quint16> weightClass; + BigEndian<quint16> widthClass; + BigEndian<quint16> type; + BigEndian<qint16> subscriptXSize; + BigEndian<qint16> subscriptYSize; + BigEndian<qint16> subscriptXOffset; + BigEndian<qint16> subscriptYOffset; + BigEndian<qint16> superscriptXSize; + BigEndian<qint16> superscriptYSize; + BigEndian<qint16> superscriptXOffset; + BigEndian<qint16> superscriptYOffset; + BigEndian<qint16> strikeOutSize; + BigEndian<qint16> strikeOutPosition; + BigEndian<qint16> familyClass; + quint8 panose[10]; + BigEndian<quint32> unicodeRanges[4]; + quint8 vendorID[4]; + BigEndian<quint16> selection; + BigEndian<quint16> firstCharIndex; + BigEndian<quint16> lastCharIndex; + BigEndian<qint16> typoAscender; + BigEndian<qint16> typoDescender; + BigEndian<qint16> typoLineGap; + BigEndian<quint16> winAscent; + BigEndian<quint16> winDescent; + BigEndian<quint32> codepageRanges[2]; + BigEndian<qint16> height; + BigEndian<qint16> capHeight; + BigEndian<quint16> defaultChar; + BigEndian<quint16> breakChar; + BigEndian<quint16> maxContext; + }; + +# pragma pack() + + class EmbeddedFont + { + public: + EmbeddedFont(const QByteArray &fontData); + + QString changeFamilyName(const QString &newFamilyName); + QByteArray data() const { return m_fontData; } + TableDirectory *tableDirectoryEntry(const QByteArray &tagName); + QString familyName(TableDirectory *nameTableDirectory = 0); + + private: + QByteArray m_fontData; + }; + + EmbeddedFont::EmbeddedFont(const QByteArray &fontData) : m_fontData(fontData) + { + } + + TableDirectory *EmbeddedFont::tableDirectoryEntry(const QByteArray &tagName) + { + Q_ASSERT(tagName.size() == 4); + + const BigEndian<quint32> *tagIdPtr = + reinterpret_cast<const BigEndian<quint32> *>(tagName.constData()); + quint32 tagId = *tagIdPtr; + + OffsetSubTable *offsetSubTable = reinterpret_cast<OffsetSubTable *>(m_fontData.data()); + TableDirectory *tableDirectory = reinterpret_cast<TableDirectory *>(offsetSubTable + 1); + + TableDirectory *nameTableDirectoryEntry = 0; + for (int i=0; i<offsetSubTable->numTables; ++i, ++tableDirectory) { + if (tableDirectory->identifier == tagId) { + nameTableDirectoryEntry = tableDirectory; + break; + } + } + + return nameTableDirectoryEntry; + } + + QString EmbeddedFont::familyName(TableDirectory *nameTableDirectoryEntry) + { + QString name; + + if (nameTableDirectoryEntry == 0) + nameTableDirectoryEntry = tableDirectoryEntry("name"); + + if (nameTableDirectoryEntry != 0) { + NameTable *nameTable = reinterpret_cast<NameTable *>(m_fontData.data() + + nameTableDirectoryEntry->offset); + NameRecord *nameRecord = reinterpret_cast<NameRecord *>(nameTable + 1); + for (int i=0; i<nameTable->count; ++i, ++nameRecord) { + if (nameRecord->nameID == 1 + && nameRecord->platformID == 3 // Windows + && nameRecord->languageID == 0x0409) { // US English + const void *ptr = reinterpret_cast<const quint8 *>(nameTable) + + nameTable->stringOffset + + nameRecord->offset; + + const BigEndian<quint16> *s = reinterpret_cast<const BigEndian<quint16> *>(ptr); + for (int j=0; j<nameRecord->length / sizeof(quint16); ++j) + name += QChar(s[j]); + + break; + } + } + } + + return name; + } + + QString EmbeddedFont::changeFamilyName(const QString &newFamilyName) + { + TableDirectory *nameTableDirectoryEntry = tableDirectoryEntry("name"); + if (nameTableDirectoryEntry == 0) + 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() * sizeof(quint16); + + const QString regularString = QString::fromLatin1("Regular"); + int regularStringSize = regularString.size() * 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 = requiredRecordCount; + nameTable->stringOffset = sizeOfHeader; + + NameRecord *nameRecord = reinterpret_cast<NameRecord *>(nameTable + 1); + for (int i=0; i<requiredRecordCount; ++i, nameRecord++) { + nameRecord->nameID = nameIds[i]; + nameRecord->encodingID = 1; + nameRecord->languageID = 0x0409; + nameRecord->platformID = 3; + nameRecord->length = newFamilyNameSize; + + // Special case for sub-family + if (nameIds[i] == 4) { + nameRecord->offset = newFamilyNameSize; + nameRecord->length = regularStringSize; + } + } + + // nameRecord now points to string data + BigEndian<quint16> *stringStorage = reinterpret_cast<BigEndian<quint16> *>(nameRecord); + const quint16 *sourceString = newFamilyName.utf16(); + for (int i=0; i<newFamilyName.size(); ++i) + stringStorage[i] = sourceString[i]; + stringStorage += newFamilyName.size(); + + sourceString = regularString.utf16(); + for (int i=0; i<regularString.size(); ++i) + stringStorage[i] = sourceString[i]; + } + + quint32 *p = reinterpret_cast<quint32 *>(newNameTable.data()); + quint32 *tableEnd = reinterpret_cast<quint32 *>(newNameTable.data() + fullSize); + + quint32 checkSum = 0; + while (p < tableEnd) + checkSum += *(p++); + + nameTableDirectoryEntry->checkSum = checkSum; + nameTableDirectoryEntry->offset = m_fontData.size(); + nameTableDirectoryEntry->length = fullSize; + + m_fontData.append(newNameTable); + + return oldFamilyName; + } + +#if !defined(QT_NO_DIRECTWRITE) + + class DirectWriteFontFileStream: public IDWriteFontFileStream + { + public: + DirectWriteFontFileStream(const QByteArray &fontData) + : m_fontData(fontData) + , m_referenceCount(0) + { + } + + ~DirectWriteFontFileStream() + { + } + + HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void **object); + ULONG STDMETHODCALLTYPE AddRef(); + ULONG STDMETHODCALLTYPE Release(); + + HRESULT STDMETHODCALLTYPE ReadFileFragment(const void **fragmentStart, UINT64 fileOffset, + UINT64 fragmentSize, OUT void **fragmentContext); + void STDMETHODCALLTYPE ReleaseFileFragment(void *fragmentContext); + HRESULT STDMETHODCALLTYPE GetFileSize(OUT UINT64 *fileSize); + HRESULT STDMETHODCALLTYPE GetLastWriteTime(OUT UINT64 *lastWriteTime); + + 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 (fragmentSize + fileOffset <= 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) {} + + ~DirectWriteFontFileLoader() + { + } + + inline void addKey(const void *key, const QByteArray &fontData) + { + Q_ASSERT(!m_fontDatas.contains(key)); + m_fontDatas.insert(key, fontData); + } + + inline void removeKey(const void *key) + { + m_fontDatas.remove(key); + } + + HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void **object); + ULONG STDMETHODCALLTYPE AddRef(); + ULONG STDMETHODCALLTYPE Release(); + + HRESULT STDMETHODCALLTYPE CreateStreamFromKey(void const *fontFileReferenceKey, + UINT32 fontFileReferenceKeySize, + OUT IDWriteFontFileStream **fontFileStream); + + 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("DirectWriteFontFileLoader::CreateStreamFromKey: Wrong key size"); + return E_FAIL; + } + + const void *key = *reinterpret_cast<void * const *>(fontFileReferenceKey); + *fontFileStream = NULL; + if (!m_fontDatas.contains(key)) + return E_FAIL; + + QByteArray fontData = m_fontDatas.value(key); + DirectWriteFontFileStream *stream = new DirectWriteFontFileStream(fontData); + stream->AddRef(); + *fontFileStream = stream; + + return S_OK; + } + + class CustomFontFileLoader + { + public: + CustomFontFileLoader() : m_directWriteFactory(0), m_directWriteFontFileLoader(0) + { + HRESULT hres = DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, + __uuidof(IDWriteFactory), + reinterpret_cast<IUnknown **>(&m_directWriteFactory)); + if (FAILED(hres)) { + qErrnoWarning(hres, "CustomFontFileLoader::CustomFontFileLoader: " + "DWriteCreateFactory failed."); + } else { + m_directWriteFontFileLoader = new DirectWriteFontFileLoader(); + m_directWriteFactory->RegisterFontFileLoader(m_directWriteFontFileLoader); + } + } + + ~CustomFontFileLoader() + { + if (m_directWriteFactory != 0 && m_directWriteFontFileLoader != 0) + m_directWriteFactory->UnregisterFontFileLoader(m_directWriteFontFileLoader); + + if (m_directWriteFactory != 0) + m_directWriteFactory->Release(); + } + + void addKey(const void *key, const QByteArray &fontData) + { + if (m_directWriteFontFileLoader != 0) + m_directWriteFontFileLoader->addKey(key, fontData); + } + + void removeKey(const void *key) + { + if (m_directWriteFontFileLoader != 0) + m_directWriteFontFileLoader->removeKey(key); + } + + IDWriteFontFileLoader *loader() const + { + return m_directWriteFontFileLoader; + } + + private: + IDWriteFactory *m_directWriteFactory; + DirectWriteFontFileLoader *m_directWriteFontFileLoader; + }; + +#endif + +} // Anonymous namespace + + +// From qfontdatabase_win.cpp +extern QFontEngine *qt_load_font_engine_win(const QFontDef &request); +// From qfontdatabase.cpp +extern QFont::Weight weightFromInteger(int weight); + +void QRawFontPrivate::platformCleanUp() +{ + if (fontHandle != NULL) { + if (ptrRemoveFontMemResourceEx == NULL) { + QFunctionPointer func = + QSystemLibrary::resolve(QLatin1String("gdi32"), "RemoveFontMemResourceEx"); + ptrRemoveFontMemResourceEx = + reinterpret_cast<QRawFontPrivate::PtrRemoveFontMemResourceEx>(func); + } + + if (ptrRemoveFontMemResourceEx == NULL) { + qWarning("QRawFont::platformCleanUp: Can't find RemoveFontMemResourceEx in gdi32"); + fontHandle = NULL; + } else { + ptrRemoveFontMemResourceEx(fontHandle); + fontHandle = NULL; + } + } +} + +void QRawFontPrivate::platformLoadFromData(const QByteArray &_fontData, + qreal pixelSize, + QFont::HintingPreference hintingPreference) +{ + QByteArray fontData(_fontData); + EmbeddedFont font(fontData); + +#if !defined(QT_NO_DIRECTWRITE) + if (hintingPreference == QFont::PreferDefaultHinting + || hintingPreference == QFont::PreferFullHinting) +#endif + { + GUID guid; + CoCreateGuid(&guid); + + QString uniqueFamilyName = QString::fromLatin1("f") + + QString::number(guid.Data1, 36) + QLatin1Char('-') + + QString::number(guid.Data2, 36) + QLatin1Char('-') + + QString::number(guid.Data3, 36) + QLatin1Char('-') + + QString::number(*reinterpret_cast<quint64 *>(guid.Data4), 36); + + QString actualFontName = font.changeFamilyName(uniqueFamilyName); + if (actualFontName.isEmpty()) { + qWarning("QRawFont::platformLoadFromData: Can't change family name of font"); + return; + } + + if (ptrAddFontMemResourceEx == NULL || ptrRemoveFontMemResourceEx == NULL) { + QFunctionPointer func = + QSystemLibrary::resolve(QLatin1String("gdi32"), "RemoveFontMemResourceEx"); + ptrRemoveFontMemResourceEx = + reinterpret_cast<QRawFontPrivate::PtrRemoveFontMemResourceEx>(func); + + func = QSystemLibrary::resolve(QLatin1String("gdi32"), "AddFontMemResourceEx"); + ptrAddFontMemResourceEx = + reinterpret_cast<QRawFontPrivate::PtrAddFontMemResourceEx>(func); + } + + Q_ASSERT(fontHandle == NULL); + if (ptrAddFontMemResourceEx != NULL && ptrRemoveFontMemResourceEx != NULL) { + DWORD count = 0; + fontData = font.data(); + fontHandle = ptrAddFontMemResourceEx(fontData.data(), fontData.size(), 0, &count); + + if (count == 0 && fontHandle != NULL) { + ptrRemoveFontMemResourceEx(fontHandle); + fontHandle = NULL; + } + } + + if (fontHandle == NULL) { + qWarning("QRawFont::platformLoadFromData: AddFontMemResourceEx failed"); + } else { + QFontDef request; + request.family = uniqueFamilyName; + request.pixelSize = pixelSize; + request.styleStrategy = QFont::NoFontMerging | QFont::PreferMatch; + request.hintingPreference = hintingPreference; + + fontEngine = qt_load_font_engine_win(request); + if (request.family != fontEngine->fontDef.family) { + qWarning("QRawFont::platformLoadFromData: Failed to load font. " + "Got fallback instead: %s", qPrintable(fontEngine->fontDef.family)); + if (fontEngine->cache_count == 0 && fontEngine->ref == 0) + delete fontEngine; + fontEngine = 0; + } else { + Q_ASSERT(fontEngine->cache_count == 0 && fontEngine->ref == 0); + + // Override the generated font name + static_cast<QFontEngineWin *>(fontEngine)->uniqueFamilyName = uniqueFamilyName; + fontEngine->fontDef.family = actualFontName; + fontEngine->ref.ref(); + } + } + } +#if !defined(QT_NO_DIRECTWRITE) + else { + CustomFontFileLoader fontFileLoader; + fontFileLoader.addKey(this, fontData); + + IDWriteFactory *factory = NULL; + HRESULT hres = DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, + __uuidof(IDWriteFactory), + reinterpret_cast<IUnknown **>(&factory)); + if (FAILED(hres)) { + qErrnoWarning(hres, "QRawFont::platformLoadFromData: DWriteCreateFactory failed"); + return; + } + + IDWriteFontFile *fontFile = NULL; + void *key = this; + + hres = factory->CreateCustomFontFileReference(&key, sizeof(void *), + fontFileLoader.loader(), &fontFile); + if (FAILED(hres)) { + qErrnoWarning(hres, "QRawFont::platformLoadFromData: " + "CreateCustomFontFileReference failed"); + factory->Release(); + return; + } + + BOOL isSupportedFontType; + DWRITE_FONT_FILE_TYPE fontFileType; + DWRITE_FONT_FACE_TYPE fontFaceType; + UINT32 numberOfFaces; + fontFile->Analyze(&isSupportedFontType, &fontFileType, &fontFaceType, &numberOfFaces); + if (!isSupportedFontType) { + fontFile->Release(); + factory->Release(); + return; + } + + IDWriteFontFace *directWriteFontFace = NULL; + hres = factory->CreateFontFace(fontFaceType, 1, &fontFile, 0, DWRITE_FONT_SIMULATIONS_NONE, + &directWriteFontFace); + if (FAILED(hres)) { + qErrnoWarning(hres, "QRawFont::platformLoadFromData: CreateFontFace failed"); + fontFile->Release(); + factory->Release(); + return; + } + + fontFile->Release(); + + fontEngine = new QFontEngineDirectWrite(factory, directWriteFontFace, pixelSize); + + // Get font family from font data + fontEngine->fontDef.family = font.familyName(); + fontEngine->ref.ref(); + + directWriteFontFace->Release(); + factory->Release(); + } +#endif + + // Get style and weight info + if (fontEngine != 0) { + TableDirectory *os2TableEntry = font.tableDirectoryEntry("OS/2"); + if (os2TableEntry != 0) { + const OS2Table *os2Table = + reinterpret_cast<const OS2Table *>(fontData.constData() + + os2TableEntry->offset); + + bool italic = os2Table->selection & 1; + bool oblique = os2Table->selection & 128; + + if (italic) + fontEngine->fontDef.style = QFont::StyleItalic; + else if (oblique) + fontEngine->fontDef.style = QFont::StyleOblique; + else + fontEngine->fontDef.style = QFont::StyleNormal; + + fontEngine->fontDef.weight = weightFromInteger(os2Table->weightClass); + } + } +} + +QT_END_NAMESPACE + +#endif // QT_NO_RAWFONT |