Alessandro Bonazzi
8c43d5cf2f
Files correlati : cg0.exe cg0700a.msk cg0700b.msk cg3.exe cg4.exe Bug : Commento: Merge 1.0 libraries
387 lines
11 KiB
C++
387 lines
11 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "cloud.h"
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#include "bearercloud.h"
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#include <qnetworksession.h>
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#include <QGraphicsTextItem>
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#include <QGraphicsSvgItem>
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#include <QGraphicsSceneMouseEvent>
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#include <QSvgRenderer>
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#include <QPainter>
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#include <QDebug>
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#include <math.h>
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static QMap<QNetworkConfiguration::BearerType, QSvgRenderer *> svgCache;
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//! [0]
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Cloud::Cloud(const QNetworkConfiguration &config, QGraphicsItem *parent)
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: QGraphicsItem(parent), configuration(config), deleteAfterAnimation(false)
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{
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session = new QNetworkSession(configuration, this);
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connect(session, SIGNAL(newConfigurationActivated()),
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this, SLOT(newConfigurationActivated()));
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connect(session, SIGNAL(stateChanged(QNetworkSession::State)),
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this, SLOT(stateChanged(QNetworkSession::State)));
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setFlag(ItemIsMovable);
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#if (QT_VERSION >= QT_VERSION_CHECK(4, 6, 0))
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setFlag(ItemSendsGeometryChanges);
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#endif
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setZValue(1);
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icon = new QGraphicsSvgItem(this);
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text = new QGraphicsTextItem(this);
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currentScale = 0;
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finalScale = 1;
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setTransform(QTransform::fromScale(currentScale, currentScale), false);
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setOpacity(0);
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newConfigurationActivated();
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}
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//! [0]
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Cloud::~Cloud()
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{
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}
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void Cloud::setFinalScale(qreal factor)
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{
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finalScale = factor;
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}
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void Cloud::setDeleteAfterAnimation(bool deleteAfter)
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{
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deleteAfterAnimation = deleteAfter;
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}
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void Cloud::calculateForces()
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{
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if (!scene() || scene()->mouseGrabberItem() == this) {
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newPos = pos();
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return;
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}
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// sum up all the forces push this item away
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qreal xvel = 0;
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qreal yvel = 0;
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QLineF orbitForce;
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foreach (QGraphicsItem *item, scene()->items()) {
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// other clouds
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Cloud *cloud = qgraphicsitem_cast<Cloud *>(item);
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if (!cloud && item->data(0) != QLatin1String("This Device"))
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continue;
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qreal factor = 1.0;
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QLineF line(cloud ? item->mapToScene(0, 0) : QPointF(0, 0), mapToScene(0, 0));
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if (item->data(0) == QLatin1String("This Device"))
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orbitForce = line;
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if (cloud)
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factor = cloud->currentScale;
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qreal dx = line.dx();
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qreal dy = line.dy();
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double l = 2.0 * (dx * dx + dy * dy);
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if (l > 0) {
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xvel += factor * dx * 200.0 / l;
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yvel += factor * dy * 200.0 / l;
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}
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}
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// tendency to stay at a fixed orbit
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qreal orbit = getRadiusForState(configuration.state());
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qreal distance = orbitForce.length();
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QLineF unit = orbitForce.unitVector();
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orbitForce.setLength(xvel * unit.dx() + yvel * unit.dy());
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qreal w = 2 - exp(-pow(distance-orbit, 2)/(2 * 50));
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if (distance < orbit) {
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xvel += orbitForce.dx() * w;
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yvel += orbitForce.dy() * w;
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} else {
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xvel -= orbitForce.dx() * w;
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yvel -= orbitForce.dy() * w;
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}
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if (qAbs(xvel) < 0.1 && qAbs(yvel) < 0.1)
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xvel = yvel = 0;
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QRectF sceneRect = scene()->sceneRect();
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newPos = pos() + QPointF(xvel, yvel);
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newPos.setX(qMin(qMax(newPos.x(), sceneRect.left() + 10), sceneRect.right() - 10));
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newPos.setY(qMin(qMax(newPos.y(), sceneRect.top() + 10), sceneRect.bottom() - 10));
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}
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bool Cloud::advance()
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{
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static const qreal scaleDelta = 0.01;
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bool animated = false;
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if (currentScale < finalScale) {
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animated = true;
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currentScale = qMin<qreal>(currentScale + scaleDelta, finalScale);
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setTransform(QTransform::fromScale(currentScale, currentScale), false);
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} else if (currentScale > finalScale) {
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animated = true;
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currentScale = qMax<qreal>(currentScale - scaleDelta, finalScale);
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setTransform(QTransform::fromScale(currentScale, currentScale), false);
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}
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if (newPos != pos()) {
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setPos(newPos);
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animated = true;
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}
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if (opacity() != finalOpacity) {
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animated = true;
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if (qAbs(finalScale - currentScale) > 0.0) {
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// use scale as reference
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setOpacity(opacity() + scaleDelta * (finalOpacity - opacity()) /
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qAbs(finalScale - currentScale));
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} else {
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setOpacity(finalOpacity);
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}
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}
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if (!animated && deleteAfterAnimation)
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deleteLater();
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return animated;
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}
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QRectF Cloud::boundingRect() const
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{
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return childrenBoundingRect();
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}
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void Cloud::paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *)
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{
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}
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//! [4]
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QVariant Cloud::itemChange(GraphicsItemChange change, const QVariant &value)
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{
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switch (change) {
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case ItemPositionHasChanged:
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if (BearerCloud *bearercloud = qobject_cast<BearerCloud *>(scene()))
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bearercloud->cloudMoved();
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default:
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;
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};
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return QGraphicsItem::itemChange(change, value);
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}
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//! [4]
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//! [3]
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void Cloud::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
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{
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if (event->button() == Qt::LeftButton) {
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if (session->isOpen())
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session->close();
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else
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session->open();
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event->accept();
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}
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}
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//! [3]
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//! [2]
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void Cloud::stateChanged(QNetworkSession::State state)
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{
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if (configuration.name().isEmpty())
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finalOpacity = qreal(0.1);
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else if (session->state() == QNetworkSession::NotAvailable)
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finalOpacity = 0.5;
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else
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finalOpacity = 1.0;
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#if !defined(Q_WS_MAEMO_5) && !defined(Q_WS_MAEMO_6) && \
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!defined(Q_OS_SYMBIAN) && !defined(Q_OS_WINCE)
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QString tooltip;
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if (configuration.name().isEmpty())
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tooltip += tr("<b>HIDDEN NETWORK</b><br>");
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else
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tooltip += tr("<b>%1</b><br>").arg(configuration.name());
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#ifndef QT_NO_NETWORKINTERFACE
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const QNetworkInterface interface = session->interface();
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if (interface.isValid())
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tooltip += tr("<br>Interface: %1").arg(interface.humanReadableName());
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tooltip += tr("<br>Id: %1").arg(configuration.identifier());
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#endif
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const QString bearerTypeName = configuration.bearerTypeName();
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if (!bearerTypeName.isEmpty())
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tooltip += tr("<br>Bearer: %1").arg(bearerTypeName);
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QString s = tr("<br>State: %1 (%2)");
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switch (state) {
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case QNetworkSession::Invalid:
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s = s.arg(tr("Invalid"));
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break;
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case QNetworkSession::NotAvailable:
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s = s.arg(tr("Not Available"));
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break;
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case QNetworkSession::Connecting:
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s = s.arg(tr("Connecting"));
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break;
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case QNetworkSession::Connected:
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s = s.arg(tr("Connected"));
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break;
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case QNetworkSession::Closing:
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s = s.arg(tr("Closing"));
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break;
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case QNetworkSession::Disconnected:
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s = s.arg(tr("Disconnected"));
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break;
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case QNetworkSession::Roaming:
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s = s.arg(tr("Roaming"));
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break;
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default:
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s = s.arg(tr("Unknown"));
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}
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if (session->isOpen())
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s = s.arg(tr("Open"));
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else
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s = s.arg(tr("Closed"));
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tooltip += s;
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tooltip += tr("<br><br>Active time: %1 seconds").arg(session->activeTime());
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tooltip += tr("<br>Received data: %1 bytes").arg(session->bytesReceived());
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tooltip += tr("<br>Sent data: %1 bytes").arg(session->bytesWritten());
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setToolTip(tooltip);
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#else
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Q_UNUSED(state);
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#endif
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}
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//! [2]
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//! [1]
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void Cloud::newConfigurationActivated()
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{
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QNetworkConfiguration::BearerType bearerType = configuration.bearerType();
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if (!svgCache.contains(bearerType)) {
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QSvgRenderer *renderer = 0;
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switch (bearerType) {
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case QNetworkConfiguration::BearerWLAN:
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renderer = new QSvgRenderer(QLatin1String(":wlan.svg"));
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break;
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case QNetworkConfiguration::BearerEthernet:
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renderer = new QSvgRenderer(QLatin1String(":lan.svg"));
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break;
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case QNetworkConfiguration::Bearer2G:
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renderer = new QSvgRenderer(QLatin1String(":cell.svg"));
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break;
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case QNetworkConfiguration::BearerBluetooth:
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renderer = new QSvgRenderer(QLatin1String(":bluetooth.svg"));
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break;
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case QNetworkConfiguration::BearerCDMA2000:
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case QNetworkConfiguration::BearerWCDMA:
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case QNetworkConfiguration::BearerHSPA:
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renderer = new QSvgRenderer(QLatin1String(":umts.svg"));
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break;
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default:
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renderer = new QSvgRenderer(QLatin1String(":unknown.svg"));
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}
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if (renderer)
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svgCache.insert(bearerType, renderer);
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}
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icon->setSharedRenderer(svgCache[bearerType]);
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if (configuration.name().isEmpty()) {
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text->setPlainText(tr("HIDDEN NETWORK"));
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} else {
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if (configuration.type() == QNetworkConfiguration::ServiceNetwork)
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text->setHtml("<b>" + configuration.name() + "</b>");
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else
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text->setPlainText(configuration.name());
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}
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const qreal height = icon->boundingRect().height() + text->boundingRect().height();
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icon->setPos(icon->boundingRect().width() / -2, height / -2);
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text->setPos(text->boundingRect().width() / -2,
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height / 2 - text->boundingRect().height());
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stateChanged(session->state());
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}
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//! [1]
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qreal Cloud::getRadiusForState(QNetworkConfiguration::StateFlags state)
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{
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switch (state) {
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case QNetworkConfiguration::Active:
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return 100;
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break;
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case QNetworkConfiguration::Discovered:
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return 150;
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break;
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case QNetworkConfiguration::Defined:
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return 200;
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break;
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case QNetworkConfiguration::Undefined:
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return 250;
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break;
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default:
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return 300;
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}
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}
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