1 files changed, 394 insertions, 0 deletions
diff --git a/src/gui/text/qfontdatabase_qpa.cpp b/src/gui/text/qfontdatabase_qpa.cpp
new file mode 100644
index 0000000000..7bcce56ac8
--- /dev/null
+++ b/src/gui/text/qfontdatabase_qpa.cpp
@@ -0,0 +1,394 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qlibraryinfo.h"
+#include <QtCore/qsettings.h>
+
+#include "qfontengine_qpa_p.h"
+#include "qplatformdefs.h"
+
+#include <QtGui/private/qapplication_p.h>
+#include <QtGui/qplatformfontdatabase_qpa.h>
+
+#include <QtCore/qmath.h>
+
+QT_BEGIN_NAMESPACE
+
+Q_GUI_EXPORT  void qt_registerFont(const QString &familyName, const QString &foundryname, int weight,
+                                   QFont::Style style, int stretch, bool antialiased, bool scalable, int pixelSize,
+                                   const QSupportedWritingSystems &writingSystems, void *handle)
+{
+    QFontDatabasePrivate *d = privateDb();
+    //    qDebug() << "Adding font" << familyname << weight << italic << pixelSize << file << fileIndex << antialiased;
+        QtFontStyle::Key styleKey;
+        styleKey.style = style;
+        styleKey.weight = weight;
+        styleKey.stretch = stretch;
+        QtFontFamily *f = d->family(familyName, true);
+
+        for (int i = 0; i < QFontDatabase::WritingSystemsCount; ++i) {
+            if (writingSystems.supported(QFontDatabase::WritingSystem(i))) {
+                f->writingSystems[i] = QtFontFamily::Supported;
+            } else {
+                f->writingSystems[i] = QtFontFamily::Unsupported;
+            }
+        }
+
+        QtFontFoundry *foundry = f->foundry(foundryname, true);
+        QtFontStyle *fontStyle = foundry->style(styleKey,  true);
+        fontStyle->smoothScalable = scalable;
+        fontStyle->antialiased = antialiased;
+        QtFontSize *size = fontStyle->pixelSize(pixelSize?pixelSize:SMOOTH_SCALABLE, true);
+        size->handle = handle;
+}
+
+static QStringList fallbackFamilies(const QString &family, const QFont::Style &style, const QFont::StyleHint &styleHint, const QUnicodeTables::Script &script)
+{
+    QStringList retList = QApplicationPrivate::platformIntegration()->fontDatabase()->fallbacksForFamily(family,style,styleHint,script);
+    QFontDatabasePrivate *db = privateDb();
+
+    QStringList::iterator i;
+    for (i = retList.begin(); i != retList.end(); ++i) {
+        bool contains = false;
+        for (int j = 0; j < db->count; j++) {
+            QtFontFamily *qtFamily = db->families[j];
+            if (!(i->compare(qtFamily->name,Qt::CaseInsensitive))) {
+                contains = true;
+                break;
+            }
+        }
+        if (!contains) {
+            i = retList.erase(i);
+            i--;
+        }
+    }
+    return retList;
+}
+
+static void initializeDb()
+{
+    static int initialized = false;
+
+    if (!initialized) {
+        //init by asking for the platformfontdb for the first time :)
+        QApplicationPrivate::platformIntegration()->fontDatabase()->populateFontDatabase();
+        initialized = true;
+    }
+}
+
+#ifndef QT_NO_SETTINGS
+// called from qapplication_qws.cpp
+void qt_applyFontDatabaseSettings(const QSettings &settings)
+{
+    initializeDb();
+    QFontDatabasePrivate *db = privateDb();
+    for (int i = 0; i < db->count; ++i) {
+        QtFontFamily *family = db->families[i];
+        if (settings.contains(family->name))
+            family->fallbackFamilies = settings.value(family->name).toStringList();
+    }
+
+    if (settings.contains(QLatin1String("Global Fallbacks")))
+        db->fallbackFamilies = settings.value(QLatin1String("Global Fallbacks")).toStringList();
+}
+#endif // QT_NO_SETTINGS
+
+static inline void load(const QString & = QString(), int = -1)
+{
+    initializeDb();
+}
+
+static
+QFontEngine *loadSingleEngine(int script,
+                              const QFontDef &request,
+                              QtFontFoundry *foundry,
+                              QtFontStyle *style, QtFontSize *size)
+{
+    Q_UNUSED(foundry);
+
+    Q_ASSERT(size);
+    int pixelSize = size->pixelSize;
+    if (!pixelSize || (style->smoothScalable && pixelSize == SMOOTH_SCALABLE))
+        pixelSize = request.pixelSize;
+
+    QFontDef def = request;
+    def.pixelSize = pixelSize;
+
+    QFontCache::Key key(def,script);
+    QFontEngine *engine = QFontCache::instance()->findEngine(key);
+    if (!engine) {
+        QPlatformFontDatabase *pfdb = QApplicationPrivate::platformIntegration()->fontDatabase();
+        engine = pfdb->fontEngine(def,QUnicodeTables::Script(script),size->handle);
+        if (engine) {
+            QFontCache::Key key(def,script);
+            QFontCache::instance()->instance()->insertEngine(key,engine);
+        }
+    }
+    return engine;
+}
+
+static
+QFontEngine *loadEngine(int script, const QFontDef &request,
+                        QtFontFamily *family, QtFontFoundry *foundry,
+                        QtFontStyle *style, QtFontSize *size)
+{
+
+    QFontEngine *engine = loadSingleEngine(script, request, foundry, style, size);
+    //make sure that the db has all fallback families
+    if (engine
+        && !(request.styleStrategy & QFont::NoFontMerging) && !engine->symbol ) {
+
+        if (family && !family->askedForFallback) {
+            QFont::Style fontStyle = QFont::Style(style->key.style);
+            QFont::StyleHint styleHint = QFont::StyleHint(request.styleHint);
+            if (styleHint == QFont::AnyStyle && request.fixedPitch)
+                styleHint = QFont::TypeWriter;
+            family->fallbackFamilies = fallbackFamilies(family->name,fontStyle,styleHint,QUnicodeTables::Script(script));
+
+            family->askedForFallback = true;
+        }
+
+        QStringList fallbacks = privateDb()->fallbackFamilies;
+        if (family && !family->fallbackFamilies.isEmpty())
+            fallbacks = family->fallbackFamilies;
+
+        engine = new QFontEngineMultiQPA(engine, script, fallbacks);
+    }
+
+    return engine;
+}
+
+static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt)
+{
+    QFontDatabasePrivate *db = privateDb();
+
+    fnt->families = QApplicationPrivate::platformIntegration()->fontDatabase()->addApplicationFont(fnt->data,fnt->fileName);
+
+    db->reregisterAppFonts = true;
+}
+
+bool QFontDatabase::removeApplicationFont(int handle)
+{
+    QMutexLocker locker(fontDatabaseMutex());
+
+    QFontDatabasePrivate *db = privateDb();
+    if (handle < 0 || handle >= db->applicationFonts.count())
+        return false;
+
+    db->applicationFonts[handle] = QFontDatabasePrivate::ApplicationFont();
+
+    db->reregisterAppFonts = true;
+    db->invalidate();
+    return true;
+}
+
+bool QFontDatabase::removeAllApplicationFonts()
+{
+    QMutexLocker locker(fontDatabaseMutex());
+
+    QFontDatabasePrivate *db = privateDb();
+    if (db->applicationFonts.isEmpty())
+        return false;
+
+    db->applicationFonts.clear();
+    db->invalidate();
+    return true;
+}
+
+bool QFontDatabase::supportsThreadedFontRendering()
+{
+    return true;
+}
+
+/*!
+    \internal
+*/
+QFontEngine *
+QFontDatabase::findFont(int script, const QFontPrivate *fp,
+                        const QFontDef &request)
+{
+    QMutexLocker locker(fontDatabaseMutex());
+
+    const int force_encoding_id = -1;
+
+    if (!privateDb()->count)
+        initializeDb();
+
+    QFontEngine *engine;
+    QFontCache::Key key(request, script);
+    engine = QFontCache::instance()->findEngine(key);
+    if (engine) {
+        qDebug() << "Cache hit level 1";
+        return engine;
+    }
+
+    QString family_name, foundry_name;
+
+    parseFontName(request.family, foundry_name, family_name);
+
+    if (qt_enable_test_font && request.family == QLatin1String("__Qt__Box__Engine__")) {
+        engine =new QTestFontEngine(request.pixelSize);
+        engine->fontDef = request;
+    }
+
+    QtFontDesc desc;
+    match(script, request, family_name, foundry_name, force_encoding_id, &desc);
+    if (desc.family != 0 && desc.foundry != 0 && desc.style != 0) {
+        engine = loadEngine(script, request, desc.family, desc.foundry, desc.style, desc.size);
+    } else {
+        FM_DEBUG("  NO MATCH FOUND\n");
+    }
+
+    if (engine) {
+        initFontDef(desc, request, &engine->fontDef);
+
+        if (fp) {
+            QFontDef def = request;
+            if (def.family.isEmpty()) {
+                def.family = fp->request.family;
+                def.family = def.family.left(def.family.indexOf(QLatin1Char(',')));
+            }
+        }
+    }
+
+    if (!engine) {
+        if (!request.family.isEmpty()) {
+            QStringList fallbacks = fallbackFamilies(request.family,QFont::Style(request.style),QFont::StyleHint(request.styleHint),QUnicodeTables::Script(script));
+            for (int i = 0; i < fallbacks.size(); i++) {
+                QFontDef def = request;
+                def.family = fallbacks.at(i);
+                QFontCache::Key key(def,script);
+                engine = QFontCache::instance()->findEngine(key);
+                if (!engine) {
+                    QtFontDesc desc;
+                    match(script, def, def.family, QLatin1String(""), 0, &desc);
+                    if (desc.family == 0 && desc.foundry == 0 && desc.style == 0) {
+                        continue;
+                    }
+                    engine = loadEngine(script, def, desc.family, desc.foundry, desc.style, desc.size);
+                    if (engine) {
+                        initFontDef(desc, def, &engine->fontDef);
+                        break;
+                    }
+                }
+            }
+        }
+
+        if (!engine)
+            engine = new QFontEngineBox(request.pixelSize);
+
+        FM_DEBUG("returning box engine");
+    }
+
+    if (fp && fp->dpi > 0) {
+        engine->fontDef.pointSize = qreal(double((engine->fontDef.pixelSize * 72) / fp->dpi));
+    } else {
+        engine->fontDef.pointSize = request.pointSize;
+    }
+
+    return engine;
+}
+
+void QFontDatabase::load(const QFontPrivate *d, int script)
+{
+    QFontDef req = d->request;
+
+    if (req.pixelSize == -1) {
+        req.pixelSize = floor(((req.pointSize * d->dpi) / 72) * 100 + 0.5) / 100;
+        req.pixelSize = qRound(req.pixelSize);
+    }
+    if (req.pointSize < 0)
+        req.pointSize = req.pixelSize*72.0/d->dpi;
+    if (req.weight == 0)
+        req.weight = QFont::Normal;
+    if (req.stretch == 0)
+        req.stretch = 100;
+
+    QFontCache::Key key(req, script);
+
+    if (!d->engineData)
+        getEngineData(d, key);
+
+    // the cached engineData could have already loaded the engine we want
+    if (d->engineData->engines[script])
+        return;
+
+    QFontEngine *fe = QFontCache::instance()->findEngine(key);
+
+    // list of families to try
+    QStringList family_list;
+
+    if (!req.family.isEmpty()) {
+        family_list = familyList(req);
+
+        // add the default family
+        QString defaultFamily = QApplication::font().family();
+        if (! family_list.contains(defaultFamily))
+            family_list << defaultFamily;
+
+    }
+
+    // null family means find the first font matching the specified script
+    family_list << QString();
+
+    QStringList::ConstIterator it = family_list.constBegin(), end = family_list.constEnd();
+    for (; !fe && it != end; ++it) {
+        req.family = *it;
+
+        fe = QFontDatabase::findFont(script, d, req);
+        if (fe && (fe->type()==QFontEngine::Box) && !req.family.isEmpty())
+            fe = 0;
+    }
+
+    if (fe->symbol || (d->request.styleStrategy & QFont::NoFontMerging)) {
+        for (int i = 0; i < QUnicodeTables::ScriptCount; ++i) {
+            if (!d->engineData->engines[i]) {
+                d->engineData->engines[i] = fe;
+                fe->ref.ref();
+            }
+        }
+    } else {
+        d->engineData->engines[script] = fe;
+        fe->ref.ref();
+    }
+}
+
+QT_END_NAMESPACE