Long live Qt for S60!

1 files changed, 348 insertions, 0 deletions

diff --git a/src/gui/text/qfontdatabase_s60.cpp b/src/gui/text/qfontdatabase_s60.cpp
new file mode 100644
index 0000000..0b4567c
--- /dev/null
+++ b/src/gui/text/qfontdatabase_s60.cpp
@@ -0,0 +1,348 @@
+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $TROLLTECH_DUAL_EMBEDDED_LICENSE$
+**
+****************************************************************************/
+
+#include <private/qapplication_p.h>
+#include "qdir.h"
+#include "qfont_p.h"
+#include "qfontengine_s60_p.h"
+#include "qabstractfileengine.h"
+#include "qdesktopservices.h"
+#include "qt_s60_p.h"
+#include "qendian.h"
+#include <private/qwindowsurface_s60_p.h>
+#include <private/qcore_symbian_p.h>
+#if defined(QT_NO_FREETYPE)
+#include <OPENFONT.H>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+#if defined(QT_NO_FREETYPE)
+class QFontDatabaseS60StoreImplementation : public QFontDatabaseS60Store
+{
+public:
+    QFontDatabaseS60StoreImplementation();
+    ~QFontDatabaseS60StoreImplementation();
+
+    const QFontEngineS60Extensions *extension(const QString &typeface) const;
+
+private:
+    RHeap* m_heap;
+    CFontStore *m_store;
+    COpenFontRasterizer *m_rasterizer;
+    mutable QHash<QString, const QFontEngineS60Extensions *> m_extensions;
+};
+
+QFontDatabaseS60StoreImplementation::QFontDatabaseS60StoreImplementation()
+{
+    m_heap = User::ChunkHeap(NULL, 0x1000, 0x100000);
+    m_store = CFontStore::NewL(m_heap);
+    m_rasterizer = COpenFontRasterizer::NewL(TUid::Uid(0x101F7F5E));
+    m_store->InstallRasterizerL(m_rasterizer);
+    QDir dir(QDesktopServices::storageLocation(QDesktopServices::FontsLocation));
+    dir.setNameFilters(QStringList() << QLatin1String("*.ttf") << QLatin1String("*.ccc"));
+    for (int i = 0; i < int(dir.count()); ++i) {
+        const QString fontFile = QDir::toNativeSeparators(dir.absoluteFilePath(dir[i]));
+        m_store->AddFileL(qt_QString2TPtrC(fontFile));
+    }
+}
+QFontDatabaseS60StoreImplementation::~QFontDatabaseS60StoreImplementation()
+{
+    qDeleteAll(m_extensions);
+    delete m_rasterizer;
+    delete m_store;
+    m_heap->Close();
+}
+
+const QFontEngineS60Extensions *QFontDatabaseS60StoreImplementation::extension(const QString &typeface) const
+{
+    if (!m_extensions.contains(typeface)) {
+        CFont* font = NULL;
+        TFontSpec spec(qt_QString2TPtrC(typeface), 1);
+        spec.iHeight = 1;
+        const TInt err = m_store->GetNearestFontToDesignHeightInPixels(font, spec);
+        Q_ASSERT(err == KErrNone && font);
+        CBitmapFont *bitmapFont = static_cast<CBitmapFont*>(font);
+        m_extensions.insert(typeface, new QFontEngineS60Extensions(bitmapFont->OpenFont()));
+    }
+    return m_extensions.value(typeface);
+}
+#else
+class QFontEngineFTS60 : public QFontEngineFT
+{
+public:
+    QFontEngineFTS60(const QFontDef &fd);
+};
+
+QFontEngineFTS60::QFontEngineFTS60(const QFontDef &fd)
+    : QFontEngineFT(fd)
+{
+    default_hint_style = HintFull;
+}
+#endif // defined(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)
+{
+    return (orientation == Qt::Horizontal?
+        S60->screenDevice()->HorizontalPixelsToTwips(pixels)
+        :S60->screenDevice()->VerticalPixelsToTwips(pixels)) / KTwipsPerPoint;
+}
+
+qreal QFontEngineS60::pointsToPixels(qreal points, Qt::Orientation orientation)
+{
+    const int twips = points * KTwipsPerPoint;
+    return orientation == Qt::Horizontal?
+        S60->screenDevice()->HorizontalTwipsToPixels(twips)
+        :S60->screenDevice()->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]);
+}
+
+static void initializeDb()
+{
+    QFontDatabasePrivate *db = privateDb();
+    if(!db || db->count)
+        return;
+
+#if defined(QT_NO_FREETYPE)
+    if (!db->s60Store)
+        db->s60Store = new QFontDatabaseS60StoreImplementation;
+
+    QS60WindowSurface::unlockBitmapHeap();
+    const int numTypeFaces = QS60Data::screenDevice()->NumTypefaces();
+    const QFontDatabaseS60StoreImplementation *store = dynamic_cast<const QFontDatabaseS60StoreImplementation*>(db->s60Store);
+    Q_ASSERT(store);
+    for (int i = 0; i < numTypeFaces; i++) {
+        TTypefaceSupport typefaceSupport;
+        QS60Data::screenDevice()->TypefaceSupport(typefaceSupport, i);
+        CFont *font; // We have to get a font instance in order to know all the details
+        TFontSpec fontSpec(typefaceSupport.iTypeface.iName, 11);
+        QS60Data::screenDevice()->GetNearestFontInPixels(font, fontSpec);
+        if (font->TypeUid() == KCFbsFontUid) {
+            TOpenFontFaceAttrib faceAttrib;
+            const CFbsFont *cfbsFont = dynamic_cast<const CFbsFont *>(font);
+            Q_ASSERT(cfbsFont);
+            cfbsFont->GetFaceAttrib(faceAttrib);
+
+            QtFontStyle::Key styleKey;
+            styleKey.style = faceAttrib.IsItalic()?QFont::StyleItalic:QFont::StyleNormal;
+            styleKey.weight = faceAttrib.IsBold()?QFont::Bold:QFont::Normal;
+
+            QString familyName((const QChar *)typefaceSupport.iTypeface.iName.Ptr(), typefaceSupport.iTypeface.iName.Length());
+            QtFontFamily *family = db->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 QFontEngineS60Extensions *extension = store->extension(familyName);
+            const QByteArray os2Table = extension->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 =
+                determineWritingSystemsFromTrueTypeBits(unicodeRange, codePageRange);
+            foreach (const QFontDatabase::WritingSystem system, writingSystems)
+                family->writingSystems[system] = QtFontFamily::Supported;
+        }
+        QS60Data::screenDevice()->ReleaseFont(font);
+    }
+    QS60WindowSurface::lockBitmapHeap();
+#else // defined(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 // defined(QT_NO_FREETYPE)
+}
+
+static inline void load(const QString &family = QString(), int script = -1)
+{
+    Q_UNUSED(family)
+    Q_UNUSED(script)
+    initializeDb();
+}
+
+static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt)
+{
+    Q_UNUSED(fnt);
+}
+
+bool QFontDatabase::supportsThreadedFontRendering()
+{
+    return false;
+}
+
+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 *, 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, req, req.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;
+#if defined(QT_NO_FREETYPE)
+        const QFontDatabaseS60StoreImplementation *store = dynamic_cast<const QFontDatabaseS60StoreImplementation*>(db->s60Store);
+        Q_ASSERT(store);
+        const QFontEngineS60Extensions *extension = store->extension(fontFamily);
+        fe = new QFontEngineS60(request, extension);
+#else
+        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
+
+        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