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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative 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 "qmlfontloader_p.h"
#include <qmlcontext.h>
#include <qmlengine.h>
#include <QUrl>
#include <QDebug>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QFile>
#include <QFontDatabase>
#include <private/qobject_p.h>
QT_BEGIN_NAMESPACE
class QmlFontLoaderPrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QmlFontLoader)
public:
QmlFontLoaderPrivate() : reply(0), status(QmlFontLoader::Null) {}
void addFontToDatabase(const QByteArray &);
QUrl url;
QString name;
QNetworkReply *reply;
QmlFontLoader::Status status;
};
QML_DEFINE_TYPE(Qt,4,6,FontLoader,QmlFontLoader)
/*!
\qmlclass FontLoader QmlFontLoader
\ingroup group_utility
\brief This item allows using fonts by name or url.
Example:
\qml
FontLoader { id: fixedFont; name: "Courier" }
FontLoader { id: webFont; source: "http://www.mysite.com/myfont.ttf" }
Text { text: "Fixed-size font"; font.family: fixedFont.name }
Text { text: "Fancy font"; font.family: webFont.name }
\endqml
*/
QmlFontLoader::QmlFontLoader(QObject *parent)
: QObject(*(new QmlFontLoaderPrivate), parent)
{
}
QmlFontLoader::~QmlFontLoader()
{
}
static QString toLocalFileOrQrc(const QUrl& url)
{
QString r = url.toLocalFile();
if (r.isEmpty() && url.scheme() == QLatin1String("qrc"))
r = QLatin1Char(':') + url.path();
return r;
}
/*!
\qmlproperty url FontLoader::source
The url of the font to load.
*/
QUrl QmlFontLoader::source() const
{
Q_D(const QmlFontLoader);
return d->url;
}
void QmlFontLoader::setSource(const QUrl &url)
{
Q_D(QmlFontLoader);
if (url == d->url)
return;
d->url = qmlContext(this)->resolvedUrl(url);
d->status = Loading;
emit statusChanged();
#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML
QString lf = toLocalFileOrQrc(d->url);
if (!lf.isEmpty()) {
int id = QFontDatabase::addApplicationFont(lf);
if (id != -1) {
d->name = QFontDatabase::applicationFontFamilies(id).at(0);
emit nameChanged();
d->status = QmlFontLoader::Ready;
} else {
d->status = QmlFontLoader::Error;
qWarning() << "Cannot load font:" << url;
}
emit statusChanged();
} else
#endif
{
QNetworkRequest req(d->url);
req.setAttribute(QNetworkRequest::HttpPipeliningAllowedAttribute, true);
d->reply = qmlEngine(this)->networkAccessManager()->get(req);
QObject::connect(d->reply, SIGNAL(finished()), this, SLOT(replyFinished()));
}
}
/*!
\qmlproperty string FontLoader::name
This property holds the name of the font family.
It is set automatically when a font is loaded using the \c url property.
Use this to set the \c font.family property of a \c Text item.
Example:
\qml
FontLoader { id: webFont; source: "http://www.mysite.com/myfont.ttf" }
Text { text: "Fancy font"; font.family: webFont.name }
\endqml
*/
QString QmlFontLoader::name() const
{
Q_D(const QmlFontLoader);
return d->name;
}
void QmlFontLoader::setName(const QString &name)
{
Q_D(QmlFontLoader);
if (d->name == name )
return;
d->name = name;
emit nameChanged();
d->status = Ready;
emit statusChanged();
}
/*!
\qmlproperty enum FontLoader::status
This property holds the status of font loading. It can be one of:
\list
\o Null - no font has been set
\o Ready - the font has been loaded
\o Loading - the font is currently being loaded
\o Error - an error occurred while loading the font
\endlist
*/
QmlFontLoader::Status QmlFontLoader::status() const
{
Q_D(const QmlFontLoader);
return d->status;
}
void QmlFontLoader::replyFinished()
{
Q_D(QmlFontLoader);
if (d->reply) {
if (!d->reply->error()) {
QByteArray ba = d->reply->readAll();
d->addFontToDatabase(ba);
} else {
d->status = Error;
emit statusChanged();
}
d->reply->deleteLater();
d->reply = 0;
}
}
void QmlFontLoaderPrivate::addFontToDatabase(const QByteArray &ba)
{
Q_Q(QmlFontLoader);
int id = QFontDatabase::addApplicationFontFromData(ba);
if (id != -1) {
name = QFontDatabase::applicationFontFamilies(id).at(0);
emit q->nameChanged();
status = QmlFontLoader::Ready;
} else {
status = QmlFontLoader::Error;
qWarning() << "Cannot load font:" << url;
}
emit q->statusChanged();
}
QT_END_NAMESPACE
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