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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 291 insertions, 0 deletions

diff --git a/src/gui/text/qplatformfontdatabase_qpa.cpp b/src/gui/text/qplatformfontdatabase_qpa.cpp
new file mode 100644
index 0000000000..6fa25e7ea2
--- /dev/null
+++ b/src/gui/text/qplatformfontdatabase_qpa.cpp
@@ -0,0 +1,291 @@
+/****************************************************************************
+**
+** 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 "qplatformfontdatabase_qpa.h"
+#include <QtGui/private/qfontengine_p.h>
+#include <QtGui/private/qfontengine_qpa_p.h>
+#include <QtCore/QLibraryInfo>
+#include <QtCore/QDir>
+
+QT_BEGIN_NAMESPACE
+
+extern 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 *hanlde);
+
+void QPlatformFontDatabase::registerQPF2Font(const QByteArray &dataArray, void *handle)
+{
+    if (dataArray.size() == 0)
+        return;
+
+    const uchar *data = reinterpret_cast<const uchar *>(dataArray.constData());
+    if (QFontEngineQPA::verifyHeader(data, dataArray.size())) {
+        QString fontName = QFontEngineQPA::extractHeaderField(data, QFontEngineQPA::Tag_FontName).toString();
+        int pixelSize = QFontEngineQPA::extractHeaderField(data, QFontEngineQPA::Tag_PixelSize).toInt();
+        QVariant weight = QFontEngineQPA::extractHeaderField(data, QFontEngineQPA::Tag_Weight);
+        QVariant style = QFontEngineQPA::extractHeaderField(data, QFontEngineQPA::Tag_Style);
+        QByteArray writingSystemBits = QFontEngineQPA::extractHeaderField(data, QFontEngineQPA::Tag_WritingSystems).toByteArray();
+
+        if (!fontName.isEmpty() && pixelSize) {
+            QFont::Weight fontWeight = QFont::Normal;
+            if (weight.type() == QVariant::Int || weight.type() == QVariant::UInt)
+                fontWeight = QFont::Weight(weight.toInt());
+
+            QFont::Style fontStyle = static_cast<QFont::Style>(style.toInt());
+
+            QSupportedWritingSystems writingSystems;
+            for (int i = 0; i < writingSystemBits.count(); ++i) {
+                uchar currentByte = writingSystemBits.at(i);
+                for (int j = 0; j < 8; ++j) {
+                    if (currentByte & 1)
+                        writingSystems.setSupported(QFontDatabase::WritingSystem(i * 8 + j));
+                    currentByte >>= 1;
+                }
+            }
+            QFont::Stretch stretch = QFont::Unstretched;
+            registerFont(fontName,QString(),fontWeight,fontStyle,stretch,true,false,pixelSize,writingSystems,handle);
+        }
+    } else {
+        qDebug() << "header verification of QPF2 font failed. maybe it is corrupt?";
+    }
+}
+
+void QPlatformFontDatabase::registerFont(const QString &familyname, const QString &foundryname, QFont::Weight weight,
+                                         QFont::Style style, QFont::Stretch stretch, bool antialiased, bool scalable, int pixelSize,
+                                         const QSupportedWritingSystems &writingSystems, void *usrPtr)
+{
+    if (scalable)
+        pixelSize = 0;
+    qt_registerFont(familyname,foundryname,weight,style,stretch,antialiased,scalable,pixelSize,writingSystems,usrPtr);
+}
+
+class QWritingSystemsPrivate
+{
+public:
+    QWritingSystemsPrivate()
+        : ref(1)
+        , vector(QFontDatabase::WritingSystemsCount,false)
+    {
+    }
+
+    QWritingSystemsPrivate(const QWritingSystemsPrivate *other)
+        : ref(1)
+        , vector(other->vector)
+    {
+    }
+
+    QAtomicInt ref;
+    QVector<bool> vector;
+};
+
+QSupportedWritingSystems::QSupportedWritingSystems()
+{
+    d = new QWritingSystemsPrivate;
+}
+
+QSupportedWritingSystems::QSupportedWritingSystems(const QSupportedWritingSystems &other)
+{
+    d = other.d;
+    d->ref.ref();
+}
+
+QSupportedWritingSystems &QSupportedWritingSystems::operator=(const QSupportedWritingSystems &other)
+{
+    if (d != other.d) {
+        other.d->ref.ref();
+        if (!d->ref.deref())
+            delete d;
+        d = other.d;
+    }
+    return *this;
+}
+
+QSupportedWritingSystems::~QSupportedWritingSystems()
+{
+    if (!d->ref.deref())
+        delete d;
+}
+
+void QSupportedWritingSystems::detach()
+{
+    if (d->ref != 1) {
+        QWritingSystemsPrivate *newd = new QWritingSystemsPrivate(d);
+        if (!d->ref.deref())
+            delete d;
+        d = newd;
+    }
+}
+
+void QSupportedWritingSystems::setSupported(QFontDatabase::WritingSystem writingSystem, bool support)
+{
+    detach();
+    d->vector[writingSystem] = support;
+}
+
+bool QSupportedWritingSystems::supported(QFontDatabase::WritingSystem writingSystem) const
+{
+    return d->vector.at(writingSystem);
+}
+
+/*!
+    \class QSupportedWritingSystems
+    \brief The QSupportedWritingSystems class is used when registering fonts with the internal Qt
+    fontdatabase
+    \ingroup painting
+
+    Its to provide an easy to use interface for indicating what writing systems a specific font
+    supports.
+
+*/
+
+/*!
+  This function is called once at startup by Qts internal fontdatabase. Reimplement this function
+  in a subclass for a convenient place to initialise the internal fontdatabase.
+
+  The default implementation looks in the fontDir() location and registers all qpf2 fonts.
+*/
+void QPlatformFontDatabase::populateFontDatabase()
+{
+    QString fontpath = fontDir();
+
+    if(!QFile::exists(fontpath)) {
+        qFatal("QFontDatabase: Cannot find font directory %s - is Qt installed correctly?",
+               qPrintable(fontpath));
+    }
+
+    QDir dir(fontpath);
+    dir.setNameFilters(QStringList() << QLatin1String("*.qpf2"));
+    dir.refresh();
+    for (int i = 0; i < int(dir.count()); ++i) {
+        const QByteArray fileName = QFile::encodeName(dir.absoluteFilePath(dir[i]));
+        QFile file(QString::fromLocal8Bit(fileName));
+        if (file.open(QFile::ReadOnly)) {
+            const QByteArray fileData = file.readAll();
+            QByteArray *fileDataPtr = new QByteArray(fileData);
+            registerQPF2Font(fileData, fileDataPtr);
+        }
+    }
+}
+
+/*!
+
+*/
+QFontEngine *QPlatformFontDatabase::fontEngine(const QFontDef &fontDef, QUnicodeTables::Script script, void *handle)
+{
+    Q_UNUSED(script);
+    Q_UNUSED(handle);
+    QByteArray *fileDataPtr = static_cast<QByteArray *>(handle);
+    QFontEngineQPA *engine = new QFontEngineQPA(fontDef,*fileDataPtr);
+    //qDebug() << fontDef.pixelSize << fontDef.weight << fontDef.style << fontDef.stretch << fontDef.styleHint << fontDef.styleStrategy << fontDef.family << script;
+    return engine;
+}
+
+/*!
+
+*/
+QStringList QPlatformFontDatabase::fallbacksForFamily(const QString family, const QFont::Style &style, const QFont::StyleHint &styleHint, const QUnicodeTables::Script &script) const
+{
+    Q_UNUSED(family);
+    Q_UNUSED(style);
+    Q_UNUSED(styleHint);
+    Q_UNUSED(script);
+    return QStringList();
+}
+
+/*!
+    Adds an application font. Returns a list of family names, or an empty list if the font could
+    not be added
+*/
+QStringList QPlatformFontDatabase::addApplicationFont(const QByteArray &fontData, const QString &fileName)
+{
+    Q_UNUSED(fontData);
+    Q_UNUSED(fileName);
+
+    qWarning("This plugin does not support application fonts");
+    return QStringList();
+}
+
+/*!
+
+*/
+void QPlatformFontDatabase::releaseHandle(void *handle)
+{
+    QByteArray *fileDataPtr = static_cast<QByteArray *>(handle);
+    delete fileDataPtr;
+}
+
+/*!
+
+*/
+QString QPlatformFontDatabase::fontDir() const
+{
+    QString fontpath = QString::fromLocal8Bit(qgetenv("QT_QPA_FONTDIR"));
+    if (fontpath.isEmpty()) {
+#ifndef QT_NO_SETTINGS
+        fontpath = QLibraryInfo::location(QLibraryInfo::LibrariesPath);
+        fontpath += QLatin1String("/fonts");
+#endif
+    }
+
+    return fontpath;
+}
+
+/*!
+    \class QPlatformFontDatabase
+    \brief The QPlatformFontDatabase makes it possible to customize how fonts are picked up, and
+    and how they are rendered
+
+    \ingroup painting
+
+    QPlatformFontDatabase is the superclass which is intended to let platform implementations use
+    native font handling.
+
+    Qt has its internal fontdatabase which it uses to pick up available fonts. To be able
+    to populate this database subclass this class, and reimplement populateFontDatabase().
+
+    Use the function registerFont to populate the internal fontdatabase.
+
+    Sometimes a specified font does not have the required glyphs, then the fallbackForFamily
+    function is called.
+
+    \sa QSupportedWritingSystems
+*/
+QT_END_NAMESPACE