diff -r b72c6db6890b -r 5dc02b23752f src/declarative/util/qdeclarativefontloader.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/declarative/util/qdeclarativefontloader.cpp Tue Jul 06 15:10:48 2010 +0300 @@ -0,0 +1,250 @@ +/**************************************************************************** +** +** 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 "private/qdeclarativefontloader_p.h" + +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +QT_BEGIN_NAMESPACE + +class QDeclarativeFontLoaderPrivate : public QObjectPrivate +{ + Q_DECLARE_PUBLIC(QDeclarativeFontLoader) + +public: + QDeclarativeFontLoaderPrivate() : reply(0), status(QDeclarativeFontLoader::Null), redirectCount(0) {} + + void addFontToDatabase(const QByteArray &); + + QUrl url; + QString name; + QNetworkReply *reply; + QDeclarativeFontLoader::Status status; + int redirectCount; +}; + + + +/*! + \qmlclass FontLoader QDeclarativeFontLoader + \since 4.7 + \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 +*/ +QDeclarativeFontLoader::QDeclarativeFontLoader(QObject *parent) + : QObject(*(new QDeclarativeFontLoaderPrivate), parent) +{ +} + +QDeclarativeFontLoader::~QDeclarativeFontLoader() +{ +} + +/*! + \qmlproperty url FontLoader::source + The url of the font to load. +*/ +QUrl QDeclarativeFontLoader::source() const +{ + Q_D(const QDeclarativeFontLoader); + return d->url; +} + +void QDeclarativeFontLoader::setSource(const QUrl &url) +{ + Q_D(QDeclarativeFontLoader); + if (url == d->url) + return; + d->url = qmlContext(this)->resolvedUrl(url); + + d->status = Loading; + emit statusChanged(); +#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML + QString lf = QDeclarativeEnginePrivate::urlToLocalFileOrQrc(d->url); + if (!lf.isEmpty()) { + int id = QFontDatabase::addApplicationFont(lf); + if (id != -1) { + d->name = QFontDatabase::applicationFontFamilies(id).at(0); + emit nameChanged(); + d->status = QDeclarativeFontLoader::Ready; + } else { + d->status = QDeclarativeFontLoader::Error; + qmlInfo(this) << "Cannot load font: \"" << url.toString() << "\""; + } + 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 QDeclarativeFontLoader::name() const +{ + Q_D(const QDeclarativeFontLoader); + return d->name; +} + +void QDeclarativeFontLoader::setName(const QString &name) +{ + Q_D(QDeclarativeFontLoader); + if (d->name == name ) + return; + d->name = name; + emit nameChanged(); + d->status = Ready; + emit statusChanged(); +} + +/*! + \qmlproperty enumeration FontLoader::status + + This property holds the status of font loading. It can be one of: + \list + \o FontLoader.Null - no font has been set + \o FontLoader.Ready - the font has been loaded + \o FontLoader.Loading - the font is currently being loaded + \o FontLoader.Error - an error occurred while loading the font + \endlist + + Note that a change in the status property does not cause anything to happen + (although it reflects what has happened to the font loader internally). If you wish + to react to the change in status you need to do it yourself, for example in one + of the following ways: + \list + \o Create a state, so that a state change occurs, e.g. State{name: 'loaded'; when: loader.status = FontLoader.Ready;} + \o Do something inside the onStatusChanged signal handler, e.g. FontLoader{id: loader; onStatusChanged: if(loader.status == FontLoader.Ready) console.log('Loaded');} + \o Bind to the status variable somewhere, e.g. Text{text: if(loader.status!=FontLoader.Ready){'Not Loaded';}else{'Loaded';}} + \endlist +*/ +QDeclarativeFontLoader::Status QDeclarativeFontLoader::status() const +{ + Q_D(const QDeclarativeFontLoader); + return d->status; +} + +#define FONTLOADER_MAXIMUM_REDIRECT_RECURSION 16 + +void QDeclarativeFontLoader::replyFinished() +{ + Q_D(QDeclarativeFontLoader); + if (d->reply) { + d->redirectCount++; + if (d->redirectCount < FONTLOADER_MAXIMUM_REDIRECT_RECURSION) { + QVariant redirect = d->reply->attribute(QNetworkRequest::RedirectionTargetAttribute); + if (redirect.isValid()) { + QUrl url = d->reply->url().resolved(redirect.toUrl()); + d->reply->deleteLater(); + d->reply = 0; + setSource(url); + return; + } + } + d->redirectCount=0; + + if (!d->reply->error()) { + QByteArray ba = d->reply->readAll(); + d->addFontToDatabase(ba); + } else { + d->status = Error; + qmlInfo(this) << "Cannot load font: \"" << d->reply->url().toString() << "\""; + emit statusChanged(); + } + d->reply->deleteLater(); + d->reply = 0; + } +} + +void QDeclarativeFontLoaderPrivate::addFontToDatabase(const QByteArray &ba) +{ + Q_Q(QDeclarativeFontLoader); + + int id = QFontDatabase::addApplicationFontFromData(ba); + if (id != -1) { + name = QFontDatabase::applicationFontFamilies(id).at(0); + emit q->nameChanged(); + status = QDeclarativeFontLoader::Ready; + } else { + status = QDeclarativeFontLoader::Error; + qmlInfo(q) << "Cannot load font: \"" << url.toString() << "\""; + } + emit q->statusChanged(); +} + +QT_END_NAMESPACE