diff options
Diffstat (limited to 'src/widgets/platforms/s60/qfontdatabase_s60.cpp')
| -rw-r--r-- | src/widgets/platforms/s60/qfontdatabase_s60.cpp | 1099 |
1 files changed, 1099 insertions, 0 deletions
diff --git a/src/widgets/platforms/s60/qfontdatabase_s60.cpp b/src/widgets/platforms/s60/qfontdatabase_s60.cpp new file mode 100644 index 0000000000..eea075fc47 --- /dev/null +++ b/src/widgets/platforms/s60/qfontdatabase_s60.cpp @@ -0,0 +1,1099 @@ +/**************************************************************************** +** +** 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 QtGui module 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 <private/qapplication_p.h> +#include "qdir.h" +#include "qfont_p.h" +#include "qfontengine_s60_p.h" +#include "qabstractfileengine.h" +#include "qdesktopservices.h" +#include "qtemporaryfile.h" +#include "qtextcodec.h" +#include <private/qpixmap_s60_p.h> +#include <private/qt_s60_p.h> +#include "qendian.h" +#include <private/qcore_symbian_p.h> +#ifdef QT_NO_FREETYPE +#include <openfont.h> +#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS +#include <graphics/openfontrasterizer.h> // COpenFontRasterizer has moved to a new header file +#endif // SYMBIAN_ENABLE_SPLIT_HEADERS +#endif // QT_NO_FREETYPE + +QT_BEGIN_NAMESPACE + +QStringList qt_symbian_fontFamiliesOnFontServer() // Also used in qfont_s60.cpp +{ + QStringList result; + QSymbianFbsHeapLock lock(QSymbianFbsHeapLock::Unlock); + const int numTypeFaces = S60->screenDevice()->NumTypefaces(); + for (int i = 0; i < numTypeFaces; i++) { + TTypefaceSupport typefaceSupport; + S60->screenDevice()->TypefaceSupport(typefaceSupport, i); + const QString familyName((const QChar *)typefaceSupport.iTypeface.iName.Ptr(), typefaceSupport.iTypeface.iName.Length()); + result.append(familyName); + } + lock.relock(); + return result; +} + +QFileInfoList alternativeFilePaths(const QString &path, const QStringList &nameFilters, + QDir::Filters filters = QDir::NoFilter, QDir::SortFlags sort = QDir::NoSort, + bool uniqueFileNames = true) +{ + QFileInfoList result; + + // Prepare a 'soft to hard' drive list: W:, X: ... A:, Z: + QStringList driveStrings; + foreach (const QFileInfo &drive, QDir::drives()) + driveStrings.append(drive.absolutePath()); + driveStrings.sort(); + const QString zDriveString(QLatin1String("Z:/")); + driveStrings.removeAll(zDriveString); + driveStrings.prepend(zDriveString); + + QStringList uniqueFileNameList; + for (int i = driveStrings.count() - 1; i >= 0; --i) { + const QDir dirOnDrive(driveStrings.at(i) + path); + const QFileInfoList entriesOnDrive = dirOnDrive.entryInfoList(nameFilters, filters, sort); + if (uniqueFileNames) { + foreach(const QFileInfo &entry, entriesOnDrive) { + if (!uniqueFileNameList.contains(entry.fileName())) { + uniqueFileNameList.append(entry.fileName()); + result.append(entry); + } + } + } else { + result.append(entriesOnDrive); + } + } + return result; +} + +#ifdef QT_NO_FREETYPE +class QSymbianFontDatabaseExtrasImplementation : public QSymbianFontDatabaseExtras +{ +public: + QSymbianFontDatabaseExtrasImplementation(); + ~QSymbianFontDatabaseExtrasImplementation(); + + const QSymbianTypeFaceExtras *extras(const QString &typeface, bool bold, bool italic) const; + void removeAppFontData(QFontDatabasePrivate::ApplicationFont *fnt); + static inline bool appFontLimitReached(); + TUid addFontFileToFontStore(const QFileInfo &fontFileInfo); + static void clear(); + + static inline QString tempAppFontFolder(); + static const QString appFontMarkerPrefix; + static QString appFontMarker(); // 'qaf<shortUid[+shortPid]>' + + struct CFontFromFontStoreReleaser { + static inline void cleanup(CFont *font) + { + if (!font) + return; + const QSymbianFontDatabaseExtrasImplementation *dbExtras = + static_cast<const QSymbianFontDatabaseExtrasImplementation*>(privateDb()->symbianExtras); + dbExtras->m_store->ReleaseFont(font); + } + }; + + struct CFontFromScreenDeviceReleaser { + static inline void cleanup(CFont *font) + { + if (!font) + return; + S60->screenDevice()->ReleaseFont(font); + } + }; + +// m_heap, m_store, m_rasterizer and m_extras are used if Symbian +// does not provide the Font Table API + RHeap* m_heap; + CFontStore *m_store; + COpenFontRasterizer *m_rasterizer; + mutable QList<const QSymbianTypeFaceExtras *> m_extras; + + mutable QSet<QString> m_applicationFontFamilies; +}; + +const QString QSymbianFontDatabaseExtrasImplementation::appFontMarkerPrefix = + QLatin1String("Q"); + +inline QString QSymbianFontDatabaseExtrasImplementation::tempAppFontFolder() +{ + return QDir::toNativeSeparators(QDir::tempPath()) + QLatin1Char('\\'); +} + +QString QSymbianFontDatabaseExtrasImplementation::appFontMarker() +{ + static QString result; + if (result.isEmpty()) { + quint16 id = 0; + if (QSymbianTypeFaceExtras::symbianFontTableApiAvailable()) { + // We are allowed to load app fonts even from previous, crashed runs + // of this application, since we can access the font tables. + const quint32 uid = RProcess().Type().MostDerived().iUid; + id = static_cast<quint16>(uid + (uid >> 16)); + } else { + // If no font table Api is available, we must not even load a font + // from a previous (crashed) run of this application. Reason: we + // won't get the font tables, they are not in the CFontStore. + // So, we use the pid, for more uniqueness. + id = static_cast<quint16>(RProcess().Id().Id()); + } + result = appFontMarkerPrefix + QString::fromLatin1("%1").arg(id & 0x7fff, 3, 32, QLatin1Char('0')); + Q_ASSERT(appFontMarkerPrefix.length() == 1 && result.length() == 4); + } + return result; +} + +static inline bool qt_symbian_fontNameHasAppFontMarker(const QString &fontName) +{ + const int idLength = 3; // Keep in sync with id length in appFontMarker(). + const QString &prefix = QSymbianFontDatabaseExtrasImplementation::appFontMarkerPrefix; + if (fontName.length() < prefix.length() + idLength + || fontName.mid(fontName.length() - idLength - prefix.length(), prefix.length()) != prefix) + return false; + // Testing if the the id is base32 data + for (int i = fontName.length() - idLength; i < fontName.length(); ++i) { + const QChar &c = fontName.at(i); + if (!(c >= QLatin1Char('0') && c <= QLatin1Char('9') + || c >= QLatin1Char('a') && c <= QLatin1Char('v'))) + return false; + } + return true; +} + +// If fontName is an application font of this app, prepend the app font marker +QString qt_symbian_fontNameWithAppFontMarker(const QString &fontName) +{ + QFontDatabasePrivate *db = privateDb(); + Q_ASSERT(db); + const QSymbianFontDatabaseExtrasImplementation *dbExtras = + static_cast<const QSymbianFontDatabaseExtrasImplementation*>(db->symbianExtras); + return dbExtras->m_applicationFontFamilies.contains(fontName) ? + fontName + QSymbianFontDatabaseExtrasImplementation::appFontMarker() + : fontName; +} + +static inline QString qt_symbian_appFontNameWithoutMarker(const QString &markedFontName) +{ + return markedFontName.left(markedFontName.length() + - QSymbianFontDatabaseExtrasImplementation::appFontMarker().length()); +} + +QSymbianFontDatabaseExtrasImplementation::QSymbianFontDatabaseExtrasImplementation() +{ + if (!QSymbianTypeFaceExtras::symbianFontTableApiAvailable()) { + QStringList filters; + filters.append(QLatin1String("*.ttf")); + filters.append(QLatin1String("*.ccc")); + filters.append(QLatin1String("*.ltt")); + const QFileInfoList fontFiles = alternativeFilePaths(QLatin1String("resource\\Fonts"), filters); + + const TInt heapMinLength = 0x1000; + const TInt heapMaxLength = qMax(0x20000 * fontFiles.count(), heapMinLength); + m_heap = User::ChunkHeap(NULL, heapMinLength, heapMaxLength); + QT_TRAP_THROWING( + m_store = CFontStore::NewL(m_heap); + m_rasterizer = COpenFontRasterizer::NewL(TUid::Uid(0x101F7F5E)); + CleanupStack::PushL(m_rasterizer); + m_store->InstallRasterizerL(m_rasterizer); + CleanupStack::Pop(m_rasterizer);); + + foreach (const QFileInfo &fontFileInfo, fontFiles) + addFontFileToFontStore(fontFileInfo); + } +} + +void QSymbianFontDatabaseExtrasImplementation::clear() +{ + QFontDatabasePrivate *db = privateDb(); + if (!db) + return; + const QSymbianFontDatabaseExtrasImplementation *dbExtras = + static_cast<const QSymbianFontDatabaseExtrasImplementation*>(db->symbianExtras); + if (!dbExtras) + return; // initializeDb() has never been called + QSymbianTypeFaceExtrasHash &extrasHash = S60->fontData(); + if (QSymbianTypeFaceExtras::symbianFontTableApiAvailable()) { + qDeleteAll(extrasHash); + } else { + typedef QList<const QSymbianTypeFaceExtras *>::iterator iterator; + for (iterator p = dbExtras->m_extras.begin(); p != dbExtras->m_extras.end(); ++p) { + dbExtras->m_store->ReleaseFont((*p)->fontOwner()); + delete *p; + } + dbExtras->m_extras.clear(); + } + extrasHash.clear(); +} + +void qt_cleanup_symbianFontDatabase() +{ + static bool cleanupDone = false; + if (cleanupDone) + return; + cleanupDone = true; + + QFontDatabasePrivate *db = privateDb(); + if (!db) + return; + + QSymbianFontDatabaseExtrasImplementation::clear(); + + if (!db->applicationFonts.isEmpty()) { + QFontDatabase::removeAllApplicationFonts(); + // We remove the left over temporary font files of Qt application. + // Active fonts are undeletable since the font server holds a handle + // on them, so we do not need to worry to delete other running + // applications' fonts. + const QDir dir(QSymbianFontDatabaseExtrasImplementation::tempAppFontFolder()); + const QStringList filter( + QSymbianFontDatabaseExtrasImplementation::appFontMarkerPrefix + QLatin1String("*.ttf")); + foreach (const QFileInfo &ttfFile, dir.entryInfoList(filter)) + QFile(ttfFile.absoluteFilePath()).remove(); + db->applicationFonts.clear(); + } +} + +QSymbianFontDatabaseExtrasImplementation::~QSymbianFontDatabaseExtrasImplementation() +{ + qt_cleanup_symbianFontDatabase(); + if (!QSymbianTypeFaceExtras::symbianFontTableApiAvailable()) { + delete m_store; + m_heap->Close(); + } +} + +#ifndef FNTSTORE_H_INLINES_SUPPORT_FMM +/* + Workaround: fntstore.h has an inlined function 'COpenFont* CBitmapFont::OpenFont()' + that returns a private data member. The header will change between SDKs. But Qt has + to build on any SDK version and run on other versions of Symbian OS. + This function performs the needed pointer arithmetic to get the right COpenFont* +*/ +COpenFont* OpenFontFromBitmapFont(const CBitmapFont* aBitmapFont) +{ + const TInt offsetIOpenFont = 92; // '_FOFF(CBitmapFont, iOpenFont)' ..if iOpenFont weren't private + const TUint valueIOpenFont = *(TUint*)PtrAdd(aBitmapFont, offsetIOpenFont); + return (valueIOpenFont & 1) ? + (COpenFont*)PtrAdd(aBitmapFont, valueIOpenFont & ~1) : // New behavior: iOpenFont is offset + (COpenFont*)valueIOpenFont; // Old behavior: iOpenFont is pointer +} +#endif // FNTSTORE_H_INLINES_SUPPORT_FMM + +const QSymbianTypeFaceExtras *QSymbianFontDatabaseExtrasImplementation::extras(const QString &aTypeface, + bool bold, bool italic) const +{ + QSymbianTypeFaceExtrasHash &extrasHash = S60->fontData(); + if (extrasHash.isEmpty() && QThread::currentThread() != QApplication::instance()->thread()) + S60->addThreadLocalReleaseFunc(clear); + const QString typeface = qt_symbian_fontNameWithAppFontMarker(aTypeface); + const QString searchKey = typeface + QString::number(int(bold)) + QString::number(int(italic)); + if (!extrasHash.contains(searchKey)) { + TFontSpec searchSpec(qt_QString2TPtrC(typeface), 1); + if (bold) + searchSpec.iFontStyle.SetStrokeWeight(EStrokeWeightBold); + if (italic) + searchSpec.iFontStyle.SetPosture(EPostureItalic); + + CFont* font = NULL; + if (QSymbianTypeFaceExtras::symbianFontTableApiAvailable()) { + const TInt err = S60->screenDevice()->GetNearestFontToDesignHeightInPixels(font, searchSpec); + Q_ASSERT(err == KErrNone && font); + QScopedPointer<CFont, CFontFromScreenDeviceReleaser> sFont(font); + QSymbianTypeFaceExtras *extras = new QSymbianTypeFaceExtras(font); + sFont.take(); + extrasHash.insert(searchKey, extras); + } else { + const TInt err = m_store->GetNearestFontToDesignHeightInPixels(font, searchSpec); + Q_ASSERT(err == KErrNone && font); + const CBitmapFont *bitmapFont = static_cast<CBitmapFont*>(font); + COpenFont *openFont = +#ifdef FNTSTORE_H_INLINES_SUPPORT_FMM + bitmapFont->OpenFont(); +#else // FNTSTORE_H_INLINES_SUPPORT_FMM + OpenFontFromBitmapFont(bitmapFont); +#endif // FNTSTORE_H_INLINES_SUPPORT_FMM + const TOpenFontFaceAttrib* const attrib = openFont->FaceAttrib(); + const QString foundKey = + QString((const QChar*)attrib->FullName().Ptr(), attrib->FullName().Length()); + if (!extrasHash.contains(foundKey)) { + QScopedPointer<CFont, CFontFromFontStoreReleaser> sFont(font); + QSymbianTypeFaceExtras *extras = new QSymbianTypeFaceExtras(font, openFont); + sFont.take(); + m_extras.append(extras); + extrasHash.insert(searchKey, extras); + extrasHash.insert(foundKey, extras); + } else { + m_store->ReleaseFont(font); + extrasHash.insert(searchKey, extrasHash.value(foundKey)); + } + } + } + return extrasHash.value(searchKey); +} + +void QSymbianFontDatabaseExtrasImplementation::removeAppFontData( + QFontDatabasePrivate::ApplicationFont *fnt) +{ + clear(); + if (!QSymbianTypeFaceExtras::symbianFontTableApiAvailable() + && fnt->fontStoreFontFileUid.iUid != 0) + m_store->RemoveFile(fnt->fontStoreFontFileUid); + if (!fnt->families.isEmpty()) + m_applicationFontFamilies.remove(fnt->families.first()); + if (fnt->screenDeviceFontFileId != 0) + S60->screenDevice()->RemoveFile(fnt->screenDeviceFontFileId); + QFile::remove(fnt->temporaryFileName); + *fnt = QFontDatabasePrivate::ApplicationFont(); +} + +bool QSymbianFontDatabaseExtrasImplementation::appFontLimitReached() +{ + QFontDatabasePrivate *db = privateDb(); + if (!db) + return false; + const int maxAppFonts = 5; + int registeredAppFonts = 0; + foreach (const QFontDatabasePrivate::ApplicationFont &appFont, db->applicationFonts) + if (!appFont.families.isEmpty() && ++registeredAppFonts == maxAppFonts) + return true; + return false; +} + +TUid QSymbianFontDatabaseExtrasImplementation::addFontFileToFontStore(const QFileInfo &fontFileInfo) +{ + Q_ASSERT(!QSymbianTypeFaceExtras::symbianFontTableApiAvailable()); + const QString fontFile = QDir::toNativeSeparators(fontFileInfo.absoluteFilePath()); + const TPtrC fontFilePtr(qt_QString2TPtrC(fontFile)); + TUid fontUid = {0}; + TRAP_IGNORE(fontUid = m_store->AddFileL(fontFilePtr)); + return fontUid; +} + +#else // QT_NO_FREETYPE +class QFontEngineFTS60 : public QFontEngineFT +{ +public: + QFontEngineFTS60(const QFontDef &fd); +}; + +QFontEngineFTS60::QFontEngineFTS60(const QFontDef &fd) + : QFontEngineFT(fd) +{ + default_hint_style = HintFull; +} +#endif // QT_NO_FREETYPE + +/* + QFontEngineS60::pixelsToPoints, QFontEngineS60::pointsToPixels, QFontEngineMultiS60::QFontEngineMultiS60 + and QFontEngineMultiS60::QFontEngineMultiS60 should be in qfontengine_s60.cpp. But since also the + Freetype based font rendering need them, they are here. +*/ +qreal QFontEngineS60::pixelsToPoints(qreal pixels, Qt::Orientation orientation) +{ + CWsScreenDevice* device = S60->screenDevice(); + return (orientation == Qt::Horizontal? + device->HorizontalPixelsToTwips(pixels) + :device->VerticalPixelsToTwips(pixels)) / KTwipsPerPoint; +} + +qreal QFontEngineS60::pointsToPixels(qreal points, Qt::Orientation orientation) +{ + CWsScreenDevice* device = S60->screenDevice(); + const int twips = points * KTwipsPerPoint; + return orientation == Qt::Horizontal? + device->HorizontalTwipsToPixels(twips) + :device->VerticalTwipsToPixels(twips); +} + +QFontEngineMultiS60::QFontEngineMultiS60(QFontEngine *first, int script, const QStringList &fallbackFamilies) + : QFontEngineMulti(fallbackFamilies.size() + 1) + , m_script(script) + , m_fallbackFamilies(fallbackFamilies) +{ + engines[0] = first; + first->ref.ref(); + fontDef = engines[0]->fontDef; +} + +void QFontEngineMultiS60::loadEngine(int at) +{ + Q_ASSERT(at < engines.size()); + Q_ASSERT(engines.at(at) == 0); + + QFontDef request = fontDef; + request.styleStrategy |= QFont::NoFontMerging; + request.family = m_fallbackFamilies.at(at-1); + engines[at] = QFontDatabase::findFont(m_script, + /*fontprivate*/0, + request); + Q_ASSERT(engines[at]); +} + +#ifdef QT_NO_FREETYPE +static bool registerScreenDeviceFont(int screenDeviceFontIndex, + const QSymbianFontDatabaseExtrasImplementation *dbExtras) +{ + TTypefaceSupport typefaceSupport; + S60->screenDevice()->TypefaceSupport(typefaceSupport, screenDeviceFontIndex); + + QString familyName((const QChar*)typefaceSupport.iTypeface.iName.Ptr(), typefaceSupport.iTypeface.iName.Length()); + if (qt_symbian_fontNameHasAppFontMarker(familyName)) { + const QString &marker = QSymbianFontDatabaseExtrasImplementation::appFontMarker(); + if (familyName.endsWith(marker)) { + familyName = qt_symbian_appFontNameWithoutMarker(familyName); + dbExtras->m_applicationFontFamilies.insert(familyName); + } else { + return false; // This was somebody else's application font. Skip it. + } + } + + CFont *font; // We have to get a font instance in order to know all the details + TFontSpec fontSpec(typefaceSupport.iTypeface.iName, 11); + if (S60->screenDevice()->GetNearestFontInPixels(font, fontSpec) != KErrNone) + return false; + QScopedPointer<CFont, QSymbianFontDatabaseExtrasImplementation::CFontFromScreenDeviceReleaser> sFont(font); + if (font->TypeUid() != KCFbsFontUid) + return false; + TOpenFontFaceAttrib faceAttrib; + const CFbsFont *cfbsFont = static_cast<const CFbsFont *>(font); + cfbsFont->GetFaceAttrib(faceAttrib); + + QtFontStyle::Key styleKey; + styleKey.style = faceAttrib.IsItalic()?QFont::StyleItalic:QFont::StyleNormal; + styleKey.weight = faceAttrib.IsBold()?QFont::Bold:QFont::Normal; + + QtFontFamily *family = privateDb()->family(familyName, true); + family->fixedPitch = faceAttrib.IsMonoWidth(); + QtFontFoundry *foundry = family->foundry(QString(), true); + QtFontStyle *style = foundry->style(styleKey, true); + style->smoothScalable = typefaceSupport.iIsScalable; + style->pixelSize(0, true); + + const QSymbianTypeFaceExtras *typeFaceExtras = + dbExtras->extras(familyName, faceAttrib.IsBold(), faceAttrib.IsItalic()); + const QByteArray os2Table = typeFaceExtras->getSfntTable(MAKE_TAG('O', 'S', '/', '2')); + const unsigned char* data = reinterpret_cast<const unsigned char*>(os2Table.constData()); + const unsigned char* ulUnicodeRange = data + 42; + quint32 unicodeRange[4] = { + qFromBigEndian<quint32>(ulUnicodeRange), + qFromBigEndian<quint32>(ulUnicodeRange + 4), + qFromBigEndian<quint32>(ulUnicodeRange + 8), + qFromBigEndian<quint32>(ulUnicodeRange + 12) + }; + const unsigned char* ulCodePageRange = data + 78; + quint32 codePageRange[2] = { + qFromBigEndian<quint32>(ulCodePageRange), + qFromBigEndian<quint32>(ulCodePageRange + 4) + }; + const QList<QFontDatabase::WritingSystem> writingSystems = + qt_determine_writing_systems_from_truetype_bits(unicodeRange, codePageRange); + foreach (const QFontDatabase::WritingSystem system, writingSystems) + family->writingSystems[system] = QtFontFamily::Supported; + return true; +} +#endif + +static void initializeDb() +{ + QFontDatabasePrivate *db = privateDb(); + if(!db || db->count) + return; + +#ifdef QT_NO_FREETYPE + if (!db->symbianExtras) + db->symbianExtras = new QSymbianFontDatabaseExtrasImplementation; + + QSymbianFbsHeapLock lock(QSymbianFbsHeapLock::Unlock); + + const int numTypeFaces = S60->screenDevice()->NumTypefaces(); + const QSymbianFontDatabaseExtrasImplementation *dbExtras = + static_cast<const QSymbianFontDatabaseExtrasImplementation*>(db->symbianExtras); + for (int i = 0; i < numTypeFaces; i++) + registerScreenDeviceFont(i, dbExtras); + + // We have to clear/release all CFonts, here, in case one of the fonts is + // an application font of another running Qt app. Otherwise the other Qt app + // cannot remove it's application font, anymore -> "Zombie Font". + QSymbianFontDatabaseExtrasImplementation::clear(); + + lock.relock(); + +#else // QT_NO_FREETYPE + QDir dir(QDesktopServices::storageLocation(QDesktopServices::FontsLocation)); + dir.setNameFilters(QStringList() << QLatin1String("*.ttf") + << QLatin1String("*.ttc") << QLatin1String("*.pfa") + << QLatin1String("*.pfb")); + for (int i = 0; i < int(dir.count()); ++i) { + const QByteArray file = QFile::encodeName(dir.absoluteFilePath(dir[i])); + db->addTTFile(file); + } +#endif // QT_NO_FREETYPE +} + +static inline void load(const QString &family = QString(), int script = -1) +{ + Q_UNUSED(family) + Q_UNUSED(script) + initializeDb(); +} + +struct OffsetTable { + quint32 sfntVersion; + quint16 numTables, searchRange, entrySelector, rangeShift; +}; + +struct TableRecord { + quint32 tag, checkSum, offset, length; +}; + +struct NameTableHead { + quint16 format, count, stringOffset; +}; + +struct NameRecord { + quint16 platformID, encodingID, languageID, nameID, length, offset; +}; + +static quint32 ttfCalcChecksum(const char *data, quint32 bytesCount) +{ + quint32 result = 0; + const quint32 *ptr = reinterpret_cast<const quint32*>(data); + const quint32 *endPtr = + ptr + (bytesCount + sizeof(quint32) - 1) / sizeof(quint32); + while (ptr < endPtr) { + const quint32 unit32Value = *ptr++; + result += qFromBigEndian(unit32Value); + } + return result; +} + +static inline quint32 toDWordBoundary(quint32 value) +{ + return (value + 3) & ~3; +} + +static inline quint32 dWordPadding(quint32 value) +{ + return (4 - (value & 3)) & 3; +} + +static inline bool ttfMarkNameTable(QByteArray &table, const QString &marker) +{ + const quint32 tableLength = static_cast<quint32>(table.size()); + + if (tableLength > 50000 // hard limit + || tableLength < sizeof(NameTableHead)) // corrupt name table + return false; + + const NameTableHead *head = reinterpret_cast<const NameTableHead*>(table.constData()); + const quint16 count = qFromBigEndian(head->count); + const quint16 stringOffset = qFromBigEndian(head->stringOffset); + if (count > 200 // hard limit + || stringOffset >= tableLength // corrupt name table + || sizeof(NameTableHead) + count * sizeof(NameRecord) >= tableLength) // corrupt name table + return false; + + QTextEncoder encoder(QTextCodec::codecForName("UTF-16BE"), QTextCodec::IgnoreHeader); + const QByteArray markerUtf16BE = encoder.fromUnicode(marker); + const QByteArray markerAscii = marker.toAscii(); + + QByteArray markedTable; + markedTable.reserve(tableLength + marker.length() * 20); // Original size plus some extra + markedTable.append(table, stringOffset); + QByteArray markedStrings; + quint32 stringDataCount = stringOffset; + for (quint16 i = 0; i < count; ++i) { + const quint32 nameRecordOffset = sizeof(NameTableHead) + sizeof(NameRecord) * i; + NameRecord *nameRecord = + reinterpret_cast<NameRecord*>(markedTable.data() + nameRecordOffset); + const quint16 nameID = qFromBigEndian(nameRecord->nameID); + const quint16 platformID = qFromBigEndian(nameRecord->platformID); + const quint16 encodingID = qFromBigEndian(nameRecord->encodingID); + const quint16 offset = qFromBigEndian(nameRecord->offset); + const quint16 length = qFromBigEndian(nameRecord->length); + stringDataCount += length; + if (stringDataCount > 80000 // hard limit. String data may be > name table size. Multiple records can reference the same string. + || static_cast<quint32>(stringOffset + offset + length) > tableLength) // String outside bounds + return false; + const bool needsMarker = + nameID == 1 || nameID == 3 || nameID == 4 || nameID == 16 || nameID == 21; + const bool isUnicode = + platformID == 0 || platformID == 3 && encodingID == 1; + const QByteArray originalString = + QByteArray::fromRawData(table.constData() + stringOffset + offset, length); + QByteArray markedString; + if (needsMarker) { + const int maxBytesLength = (KMaxTypefaceNameLength - marker.length()) * (isUnicode ? 2 : 1); + markedString = originalString.left(maxBytesLength) + (isUnicode ? markerUtf16BE : markerAscii); + } else { + markedString = originalString; + } + nameRecord->offset = qToBigEndian(static_cast<quint16>(markedStrings.length())); + nameRecord->length = qToBigEndian(static_cast<quint16>(markedString.length())); + markedStrings.append(markedString); + } + markedTable.append(markedStrings); + table = markedTable; + return true; +} + +const quint32 ttfMaxFileSize = 3500000; + +static inline bool ttfMarkAppFont(QByteArray &ttf, const QString &marker) +{ + const quint32 ttfChecksumNumber = 0xb1b0afba; + const quint32 alignment = 4; + const quint32 ttfLength = static_cast<quint32>(ttf.size()); + if (ttfLength > ttfMaxFileSize // hard limit + || ttfLength % alignment != 0 // ttf sizes are always factors of 4 + || ttfLength <= sizeof(OffsetTable) // ttf too short + || ttfCalcChecksum(ttf.constData(), ttf.size()) != ttfChecksumNumber) // ttf checksum is invalid + return false; + + const OffsetTable *offsetTable = reinterpret_cast<const OffsetTable*>(ttf.constData()); + const quint16 numTables = qFromBigEndian(offsetTable->numTables); + const quint32 recordsLength = + toDWordBoundary(sizeof(OffsetTable) + numTables * sizeof(TableRecord)); + if (numTables > 30 // hard limit + || recordsLength + numTables * alignment > ttfLength) // Corrupt ttf. Tables would not fit, even if empty. + return false; + + QByteArray markedTtf; + markedTtf.reserve(ttfLength + marker.length() * 20); // Original size plus some extra + markedTtf.append(ttf.constData(), recordsLength); + + const quint32 ttfCheckSumAdjustmentOffset = 8; // Offset from the start of 'head' + int indexOfHeadTable = -1; + quint32 ttfDataSize = recordsLength; + typedef QPair<quint32, quint32> Range; + QList<Range> memoryRanges; + memoryRanges.reserve(numTables); + for (int i = 0; i < numTables; ++i) { + TableRecord *tableRecord = + reinterpret_cast<TableRecord*>(markedTtf.data() + sizeof(OffsetTable) + i * sizeof(TableRecord)); + const quint32 offset = qFromBigEndian(tableRecord->offset); + const quint32 length = qFromBigEndian(tableRecord->length); + const quint32 lengthAligned = toDWordBoundary(length); + ttfDataSize += lengthAligned; + if (offset < recordsLength // must not intersect ttf header/records + || offset % alignment != 0 // must be aligned + || offset > ttfLength - alignment // table out of bounds + || offset + lengthAligned > ttfLength // table out of bounds + || ttfDataSize > ttfLength) // tables would not fit into the ttf + return false; + + foreach (const Range &range, memoryRanges) + if (offset < range.first + range.second && offset + lengthAligned > range.first) + return false; // Overlaps with another table + memoryRanges.append(Range(offset, lengthAligned)); + + quint32 checkSum = qFromBigEndian(tableRecord->checkSum); + if (tableRecord->tag == qToBigEndian(static_cast<quint32>('head'))) { + if (length < ttfCheckSumAdjustmentOffset + sizeof(quint32)) + return false; // Invalid 'head' table + const quint32 *checkSumAdjustmentTag = + reinterpret_cast<const quint32*>(ttf.constData() + offset + ttfCheckSumAdjustmentOffset); + const quint32 checkSumAdjustment = qFromBigEndian(*checkSumAdjustmentTag); + checkSum += checkSumAdjustment; + indexOfHeadTable = i; // For the ttf checksum re-calculation, later + } + if (checkSum != ttfCalcChecksum(ttf.constData() + offset, length)) + return false; // Table checksum is invalid + + bool updateTableChecksum = false; + QByteArray table; + if (tableRecord->tag == qToBigEndian(static_cast<quint32>('name'))) { + table = QByteArray(ttf.constData() + offset, length); + if (!ttfMarkNameTable(table, marker)) + return false; // Name table was not markable. + updateTableChecksum = true; + } else { + table = QByteArray::fromRawData(ttf.constData() + offset, length); + } + + tableRecord->offset = qToBigEndian(markedTtf.size()); + tableRecord->length = qToBigEndian(table.size()); + markedTtf.append(table); + markedTtf.append(QByteArray(dWordPadding(table.size()), 0)); // 0-padding + if (updateTableChecksum) { + TableRecord *tableRecord = // Need to recalculate, since markedTtf changed + reinterpret_cast<TableRecord*>(markedTtf.data() + sizeof(OffsetTable) + i * sizeof(TableRecord)); + const quint32 offset = qFromBigEndian(tableRecord->offset); + const quint32 length = qFromBigEndian(tableRecord->length); + tableRecord->checkSum = qToBigEndian(ttfCalcChecksum(markedTtf.constData() + offset, length)); + } + } + if (indexOfHeadTable == -1 // 'head' table is mandatory + || ttfDataSize != ttfLength) // We do not allow ttf data "holes". Neither does Symbian. + return false; + TableRecord *headRecord = + reinterpret_cast<TableRecord*>(markedTtf.data() + sizeof(OffsetTable) + indexOfHeadTable * sizeof(TableRecord)); + quint32 *checkSumAdjustmentTag = + reinterpret_cast<quint32*>(markedTtf.data() + qFromBigEndian(headRecord->offset) + ttfCheckSumAdjustmentOffset); + *checkSumAdjustmentTag = 0; + const quint32 ttfChecksum = ttfCalcChecksum(markedTtf.constData(), markedTtf.count()); + *checkSumAdjustmentTag = qToBigEndian(ttfChecksumNumber - ttfChecksum); + ttf = markedTtf; + return true; +} + +static inline bool ttfCanSymbianLoadFont(const QByteArray &data, const QString &fileName) +{ + bool result = false; + QString ttfFileName; + QFile tempFileGuard; + QFileInfo info(fileName); + if (!data.isEmpty()) { + QTemporaryFile tempfile(QSymbianFontDatabaseExtrasImplementation::tempAppFontFolder() + + QSymbianFontDatabaseExtrasImplementation::appFontMarker() + + QLatin1String("XXXXXX.ttf")); + if (!tempfile.open() || tempfile.write(data) == -1) + return false; + ttfFileName = QDir::toNativeSeparators(QFileInfo(tempfile).canonicalFilePath()); + tempfile.setAutoRemove(false); + tempfile.close(); + tempFileGuard.setFileName(ttfFileName); + if (!tempFileGuard.open(QIODevice::ReadOnly)) + return false; + } else if (info.isFile()) { + ttfFileName = QDir::toNativeSeparators(info.canonicalFilePath()); + } else { + return false; + } + + CFontStore *store = 0; + RHeap* heap = User::ChunkHeap(NULL, 0x1000, 0x20000); + if (heap) { + QT_TRAP_THROWING( + CleanupClosePushL(*heap); + store = CFontStore::NewL(heap); + CleanupStack::PushL(store); + COpenFontRasterizer *rasterizer = COpenFontRasterizer::NewL(TUid::Uid(0x101F7F5E)); + CleanupStack::PushL(rasterizer); + store->InstallRasterizerL(rasterizer); + CleanupStack::Pop(rasterizer); + TUid fontUid = {-1}; + TRAP_IGNORE(fontUid = store->AddFileL(qt_QString2TPtrC(ttfFileName))); + if (fontUid.iUid != -1) + result = true; + CleanupStack::PopAndDestroy(2, heap); // heap, store + ); + } + + if (tempFileGuard.isOpen()) + tempFileGuard.remove(); + + return result; +} + +static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt) +{ + if (QSymbianFontDatabaseExtrasImplementation::appFontLimitReached() + || fnt->data.size() > ttfMaxFileSize // hard limit + || fnt->data.isEmpty() && (!fnt->fileName.endsWith(QLatin1String(".ttf"), Qt::CaseInsensitive) // Only buffer or .ttf + || QFileInfo(fnt->fileName).size() > ttfMaxFileSize)) // hard limit + return; + +// Using ttfCanSymbianLoadFont() causes crashes on app destruction (Symbian^3|PR1 and lower). +// Therefore, not using it for now, but eventually in a later version. +// if (!ttfCanSymbianLoadFont(fnt->data, fnt->fileName)) +// return; + + QFontDatabasePrivate *db = privateDb(); + if (!db) + return; + + if (!db->count) + initializeDb(); + + QSymbianFontDatabaseExtrasImplementation *dbExtras = + static_cast<QSymbianFontDatabaseExtrasImplementation*>(db->symbianExtras); + if (!dbExtras) + return; + + const QString &marker = QSymbianFontDatabaseExtrasImplementation::appFontMarker(); + + // The QTemporaryFile object being used in the following section must be + // destructed before letting Symbian load the TTF file. Symbian would not + // load it otherwise, because QTemporaryFile will still keep some handle + // on it. The scope is used to reduce the life time of the QTemporaryFile. + // In order to prevent other processes from modifying the file between the + // moment where the QTemporaryFile is destructed and the file is loaded by + // Symbian, we have a QFile "tempFileGuard" outside the scope which opens + // the file in ReadOnly mode while the QTemporaryFile is still alive. + QFile tempFileGuard; + { + QTemporaryFile tempfile(QSymbianFontDatabaseExtrasImplementation::tempAppFontFolder() + + marker + QLatin1String("XXXXXX.ttf")); + if (!tempfile.open()) + return; + const QString tempFileName = QFileInfo(tempfile).canonicalFilePath(); + if (fnt->data.isEmpty()) { + QFile sourceFile(fnt->fileName); + if (!sourceFile.open(QIODevice::ReadOnly)) + return; + fnt->data = sourceFile.readAll(); + } + if (!ttfMarkAppFont(fnt->data, marker) || tempfile.write(fnt->data) == -1) + return; + tempfile.setAutoRemove(false); + tempfile.close(); // Tempfile still keeps a file handle, forbidding write access + fnt->data.clear(); // The TTF data was marked and saved. Not needed in memory, anymore. + tempFileGuard.setFileName(tempFileName); + if (!tempFileGuard.open(QIODevice::ReadOnly)) + return; + fnt->temporaryFileName = tempFileName; + } + + const QString fullFileName = QDir::toNativeSeparators(fnt->temporaryFileName); + QSymbianFbsHeapLock lock(QSymbianFbsHeapLock::Unlock); + const QStringList fontsOnServerBefore = qt_symbian_fontFamiliesOnFontServer(); + const TInt err = + S60->screenDevice()->AddFile(qt_QString2TPtrC(fullFileName), fnt->screenDeviceFontFileId); + tempFileGuard.close(); // Did its job + const QStringList fontsOnServerAfter = qt_symbian_fontFamiliesOnFontServer(); + if (err == KErrNone && fontsOnServerBefore.count() < fontsOnServerAfter.count()) { // Added to screen device? + int fontOnServerIndex = fontsOnServerAfter.count() - 1; + for (int i = 0; i < fontsOnServerBefore.count(); i++) { + if (fontsOnServerBefore.at(i) != fontsOnServerAfter.at(i)) { + fontOnServerIndex = i; + break; + } + } + + // Must remove all font engines with their CFonts, first. + QFontCache::instance()->clear(); + db->free(); + QSymbianFontDatabaseExtrasImplementation::clear(); + + if (!QSymbianTypeFaceExtras::symbianFontTableApiAvailable()) + fnt->fontStoreFontFileUid = dbExtras->addFontFileToFontStore(QFileInfo(fullFileName)); + + const QString &appFontName = fontsOnServerAfter.at(fontOnServerIndex); + fnt->families.append(qt_symbian_appFontNameWithoutMarker(appFontName)); + if (!qt_symbian_fontNameHasAppFontMarker(appFontName) + || !registerScreenDeviceFont(fontOnServerIndex, dbExtras)) + dbExtras->removeAppFontData(fnt); + } else { + if (fnt->screenDeviceFontFileId > 0) + S60->screenDevice()->RemoveFile(fnt->screenDeviceFontFileId); // May still have the file open! + QFile::remove(fnt->temporaryFileName); + *fnt = QFontDatabasePrivate::ApplicationFont(); + } + lock.relock(); +} + +bool QFontDatabase::removeApplicationFont(int handle) +{ + QMutexLocker locker(fontDatabaseMutex()); + + QFontDatabasePrivate *db = privateDb(); + if (!db || handle < 0 || handle >= db->applicationFonts.count()) + return false; + QSymbianFontDatabaseExtrasImplementation *dbExtras = + static_cast<QSymbianFontDatabaseExtrasImplementation*>(db->symbianExtras); + if (!dbExtras) + return false; + + QFontDatabasePrivate::ApplicationFont *fnt = &db->applicationFonts[handle]; + if (fnt->families.isEmpty()) + return true; // Nothing to remove. Return peacefully. + + // Must remove all font engines with their CFonts, first + QFontCache::instance()->clear(); + db->free(); + dbExtras->removeAppFontData(fnt); + + db->invalidate(); // This will just emit 'fontDatabaseChanged()' + return true; +} + +bool QFontDatabase::removeAllApplicationFonts() +{ + QMutexLocker locker(fontDatabaseMutex()); + + const int applicationFontsCount = privateDb()->applicationFonts.count(); + for (int i = 0; i < applicationFontsCount; ++i) + if (!removeApplicationFont(i)) + return false; + return true; +} + +bool QFontDatabase::supportsThreadedFontRendering() +{ + return QSymbianTypeFaceExtras::symbianFontTableApiAvailable(); +} + +static +QFontDef cleanedFontDef(const QFontDef &req) +{ + QFontDef result = req; + if (result.pixelSize <= 0) { + result.pixelSize = QFontEngineS60::pointsToPixels(qMax(qreal(1.0), result.pointSize)); + result.pointSize = 0; + } + return result; +} + +QFontEngine *QFontDatabase::findFont(int script, const QFontPrivate *d, const QFontDef &req) +{ + const QFontCache::Key key(cleanedFontDef(req), script); + + if (!privateDb()->count) + initializeDb(); + + QFontEngine *fe = QFontCache::instance()->findEngine(key); + if (!fe) { + // Making sure that fe->fontDef.family will be an existing font. + initializeDb(); + QFontDatabasePrivate *db = privateDb(); + QtFontDesc desc; + QList<int> blacklistedFamilies; + match(script, key.def, key.def.family, QString(), -1, &desc, blacklistedFamilies); + if (!desc.family) // falling back to application font + desc.family = db->family(QApplication::font().defaultFamily()); + Q_ASSERT(desc.family); + + // Making sure that desc.family supports the requested script + QtFontDesc mappedDesc; + bool supportsScript = false; + do { + match(script, req, QString(), QString(), -1, &mappedDesc, blacklistedFamilies); + if (mappedDesc.family == desc.family) { + supportsScript = true; + break; + } + blacklistedFamilies.append(mappedDesc.familyIndex); + } while (mappedDesc.family); + if (!supportsScript) { + blacklistedFamilies.clear(); + match(script, req, QString(), QString(), -1, &mappedDesc, blacklistedFamilies); + if (mappedDesc.family) + desc = mappedDesc; + } + + const QString fontFamily = desc.family->name; + QFontDef request = req; + request.family = fontFamily; +#ifdef QT_NO_FREETYPE + const QSymbianFontDatabaseExtrasImplementation *dbExtras = + static_cast<const QSymbianFontDatabaseExtrasImplementation*>(db->symbianExtras); + const QSymbianTypeFaceExtras *typeFaceExtras = + dbExtras->extras(fontFamily, request.weight > QFont::Normal, request.style != QFont::StyleNormal); + + // We need a valid pixelSize, e.g. for lineThickness() + if (request.pixelSize < 0) + request.pixelSize = request.pointSize * d->dpi / 72; + + fe = new QFontEngineS60(request, typeFaceExtras); +#else // QT_NO_FREETYPE + Q_UNUSED(d) + QFontEngine::FaceId faceId; + const QtFontFamily * const reqQtFontFamily = db->family(fontFamily); + faceId.filename = reqQtFontFamily->fontFilename; + faceId.index = reqQtFontFamily->fontFileIndex; + + QFontEngineFTS60 *fte = new QFontEngineFTS60(cleanedFontDef(request)); + if (fte->init(faceId, true, QFontEngineFT::Format_A8)) + fe = fte; + else + delete fte; +#endif // QT_NO_FREETYPE + + Q_ASSERT(fe); + if (script == QUnicodeTables::Common + && !(req.styleStrategy & QFont::NoFontMerging) + && !fe->symbol) { + + QStringList commonFonts; + for (int ws = 1; ws < QFontDatabase::WritingSystemsCount; ++ws) { + if (scriptForWritingSystem[ws] != script) + continue; + for (int i = 0; i < db->count; ++i) { + if (db->families[i]->writingSystems[ws] & QtFontFamily::Supported) + commonFonts.append(db->families[i]->name); + } + } + + // Hack: Prioritize .ccc fonts + const QString niceEastAsianFont(QLatin1String("Sans MT 936_S60")); + if (commonFonts.removeAll(niceEastAsianFont) > 0) + commonFonts.prepend(niceEastAsianFont); + + fe = new QFontEngineMultiS60(fe, script, commonFonts); + } + } + fe->ref.ref(); + QFontCache::instance()->insertEngine(key, fe); + return fe; +} + +void QFontDatabase::load(const QFontPrivate *d, int script) +{ + QFontEngine *fe = 0; + QFontDef req = d->request; + + if (!d->engineData) { + const QFontCache::Key key(cleanedFontDef(req), script); + getEngineData(d, key); + } + + // the cached engineData could have already loaded the engine we want + if (d->engineData->engines[script]) + fe = d->engineData->engines[script]; + + if (!fe) { + if (qt_enable_test_font && req.family == QLatin1String("__Qt__Box__Engine__")) { + fe = new QTestFontEngine(req.pixelSize); + fe->fontDef = req; + } else { + fe = findFont(script, d, req); + } + d->engineData->engines[script] = fe; + } +} + +QT_END_NAMESPACE |