--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/examples/bearercloud/cloud.cpp Thu Apr 01 08:30:34 2010 +0300
@@ -0,0 +1,361 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 "cloud.h"
+#include "bearercloud.h"
+
+#include <qnetworksession.h>
+
+#include <QGraphicsTextItem>
+#include <QGraphicsSvgItem>
+#include <QGraphicsSceneMouseEvent>
+#include <QSvgRenderer>
+#include <QPainter>
+
+#include <QDebug>
+
+#include <math.h>
+
+static QMap<QString, QSvgRenderer *> svgCache;
+
+//! [0]
+Cloud::Cloud(const QNetworkConfiguration &config, QGraphicsItem *parent)
+: QGraphicsItem(parent), configuration(config), deleteAfterAnimation(false)
+{
+ session = new QNetworkSession(configuration, this);
+ connect(session, SIGNAL(newConfigurationActivated()),
+ this, SLOT(newConfigurationActivated()));
+ connect(session, SIGNAL(stateChanged(QNetworkSession::State)),
+ this, SLOT(stateChanged(QNetworkSession::State)));
+
+ setFlag(ItemIsMovable);
+#if (QT_VERSION >= QT_VERSION_CHECK(4, 6, 0))
+ setFlag(ItemSendsGeometryChanges);
+#endif
+ setZValue(1);
+
+ icon = new QGraphicsSvgItem(this);
+ text = new QGraphicsTextItem(this);
+
+ currentScale = 0;
+ finalScale = 1;
+ setTransform(QTransform::fromScale(currentScale, currentScale), false);
+ setOpacity(0);
+
+ newConfigurationActivated();
+}
+//! [0]
+
+Cloud::~Cloud()
+{
+}
+
+void Cloud::setFinalScale(qreal factor)
+{
+ finalScale = factor;
+}
+
+void Cloud::setDeleteAfterAnimation(bool deleteAfter)
+{
+ deleteAfterAnimation = deleteAfter;
+}
+
+void Cloud::calculateForces()
+{
+ if (!scene() || scene()->mouseGrabberItem() == this) {
+ newPos = pos();
+ return;
+ }
+
+ // sum up all the forces push this item away
+ qreal xvel = 0;
+ qreal yvel = 0;
+ QLineF orbitForce;
+ foreach (QGraphicsItem *item, scene()->items()) {
+ // other clouds
+ Cloud *cloud = qgraphicsitem_cast<Cloud *>(item);
+ if (!cloud && item->data(0) != QLatin1String("This Device"))
+ continue;
+
+ qreal factor = 1.0;
+
+ QLineF line(cloud ? item->mapToScene(0, 0) : QPointF(0, 0), mapToScene(0, 0));
+ if (item->data(0) == QLatin1String("This Device"))
+ orbitForce = line;
+
+ if (cloud)
+ factor = cloud->currentScale;
+
+ qreal dx = line.dx();
+ qreal dy = line.dy();
+ double l = 2.0 * (dx * dx + dy * dy);
+ if (l > 0) {
+ xvel += factor * dx * 200.0 / l;
+ yvel += factor * dy * 200.0 / l;
+ }
+ }
+
+ // tendency to stay at a fixed orbit
+ qreal orbit = getRadiusForState(configuration.state());
+ qreal distance = orbitForce.length();
+
+ QLineF unit = orbitForce.unitVector();
+
+ orbitForce.setLength(xvel * unit.dx() + yvel * unit.dy());
+
+ qreal w = 2 - exp(-pow(distance-orbit, 2)/(2 * 50));
+
+ if (distance < orbit) {
+ xvel += orbitForce.dx() * w;
+ yvel += orbitForce.dy() * w;
+ } else {
+ xvel -= orbitForce.dx() * w;
+ yvel -= orbitForce.dy() * w;
+ }
+
+ if (qAbs(xvel) < 0.1 && qAbs(yvel) < 0.1)
+ xvel = yvel = 0;
+
+ QRectF sceneRect = scene()->sceneRect();
+ newPos = pos() + QPointF(xvel, yvel);
+ newPos.setX(qMin(qMax(newPos.x(), sceneRect.left() + 10), sceneRect.right() - 10));
+ newPos.setY(qMin(qMax(newPos.y(), sceneRect.top() + 10), sceneRect.bottom() - 10));
+}
+
+bool Cloud::advance()
+{
+ static const qreal scaleDelta = 0.01;
+
+ bool animated = false;
+
+ if (currentScale < finalScale) {
+ animated = true;
+ currentScale = qMin<qreal>(currentScale + scaleDelta, finalScale);
+ setTransform(QTransform::fromScale(currentScale, currentScale), false);
+ } else if (currentScale > finalScale) {
+ animated = true;
+ currentScale = qMax<qreal>(currentScale - scaleDelta, finalScale);
+ setTransform(QTransform::fromScale(currentScale, currentScale), false);
+ }
+
+ if (newPos != pos()) {
+ setPos(newPos);
+ animated = true;
+ }
+
+ if (opacity() != finalOpacity) {
+ animated = true;
+ if (qAbs(finalScale - currentScale) > 0.0) {
+ // use scale as reference
+ setOpacity(opacity() + scaleDelta * (finalOpacity - opacity()) /
+ qAbs(finalScale - currentScale));
+ } else {
+ setOpacity(finalOpacity);
+ }
+ }
+
+ if (!animated && deleteAfterAnimation)
+ deleteLater();
+
+ return animated;
+}
+
+QRectF Cloud::boundingRect() const
+{
+ return childrenBoundingRect();
+}
+
+void Cloud::paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *)
+{
+}
+
+//! [4]
+QVariant Cloud::itemChange(GraphicsItemChange change, const QVariant &value)
+{
+ switch (change) {
+ case ItemPositionHasChanged:
+ if (BearerCloud *bearercloud = qobject_cast<BearerCloud *>(scene()))
+ bearercloud->cloudMoved();
+ default:
+ ;
+ };
+
+ return QGraphicsItem::itemChange(change, value);
+}
+//! [4]
+
+//! [3]
+void Cloud::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
+{
+ if (event->button() == Qt::LeftButton) {
+ if (session->isOpen())
+ session->close();
+ else
+ session->open();
+
+ event->accept();
+ }
+}
+//! [3]
+
+//! [2]
+void Cloud::stateChanged(QNetworkSession::State state)
+{
+ if (configuration.name().isEmpty())
+ finalOpacity = qreal(0.1);
+ else if (session->state() == QNetworkSession::NotAvailable)
+ finalOpacity = 0.5;
+ else
+ finalOpacity = 1.0;
+
+ QString tooltip;
+
+ if (configuration.name().isEmpty())
+ tooltip += tr("<b>HIDDEN NETWORK</b><br>");
+ else
+ tooltip += tr("<b>%1</b><br>").arg(configuration.name());
+
+ const QNetworkInterface interface = session->interface();
+ if (interface.isValid())
+ tooltip += tr("<br>Interface: %1").arg(interface.humanReadableName());
+ tooltip += tr("<br>Id: %1").arg(configuration.identifier());
+
+ const QString bearerName = configuration.bearerName();
+ if (!bearerName.isEmpty())
+ tooltip += tr("<br>Bearer: %1").arg(bearerName);
+
+ QString s = tr("<br>State: %1 (%2)");
+ switch (state) {
+ case QNetworkSession::Invalid:
+ s = s.arg(tr("Invalid"));
+ break;
+ case QNetworkSession::NotAvailable:
+ s = s.arg(tr("Not Available"));
+ break;
+ case QNetworkSession::Connecting:
+ s = s.arg(tr("Connecting"));
+ break;
+ case QNetworkSession::Connected:
+ s = s.arg(tr("Connected"));
+ break;
+ case QNetworkSession::Closing:
+ s = s.arg(tr("Closing"));
+ break;
+ case QNetworkSession::Disconnected:
+ s = s.arg(tr("Disconnected"));
+ break;
+ case QNetworkSession::Roaming:
+ s = s.arg(tr("Roaming"));
+ break;
+ default:
+ s = s.arg(tr("Unknown"));
+ }
+
+ if (session->isOpen())
+ s = s.arg(tr("Open"));
+ else
+ s = s.arg(tr("Closed"));
+
+ tooltip += s;
+
+ tooltip += tr("<br><br>Active time: %1 seconds").arg(session->activeTime());
+ tooltip += tr("<br>Received data: %1 bytes").arg(session->bytesReceived());
+ tooltip += tr("<br>Sent data: %1 bytes").arg(session->bytesWritten());
+
+ setToolTip(tooltip);
+}
+//! [2]
+
+//! [1]
+void Cloud::newConfigurationActivated()
+{
+ const QString bearerName = configuration.bearerName();
+ if (!svgCache.contains(bearerName)) {
+ if (bearerName == QLatin1String("WLAN"))
+ svgCache.insert(bearerName, new QSvgRenderer(QLatin1String(":wlan.svg")));
+ else if (bearerName == QLatin1String("Ethernet"))
+ svgCache.insert(bearerName, new QSvgRenderer(QLatin1String(":lan.svg")));
+ else
+ svgCache.insert(bearerName, new QSvgRenderer(QLatin1String(":unknown.svg")));
+ }
+
+ icon->setSharedRenderer(svgCache[bearerName]);
+
+ if (configuration.name().isEmpty()) {
+ text->setPlainText(tr("HIDDEN NETWORK"));
+ } else {
+ if (configuration.type() == QNetworkConfiguration::ServiceNetwork)
+ text->setHtml("<b>" + configuration.name() + "</b>");
+ else
+ text->setPlainText(configuration.name());
+ }
+
+ const qreal height = icon->boundingRect().height() + text->boundingRect().height();
+
+ icon->setPos(icon->boundingRect().width() / -2, height / -2);
+
+ text->setPos(text->boundingRect().width() / -2,
+ height / 2 - text->boundingRect().height());
+
+ stateChanged(session->state());
+}
+//! [1]
+
+qreal Cloud::getRadiusForState(QNetworkConfiguration::StateFlags state)
+{
+ switch (state) {
+ case QNetworkConfiguration::Active:
+ return 100;
+ break;
+ case QNetworkConfiguration::Discovered:
+ return 150;
+ break;
+ case QNetworkConfiguration::Defined:
+ return 200;
+ break;
+ case QNetworkConfiguration::Undefined:
+ return 250;
+ break;
+ default:
+ return 300;
+ }
+}
+