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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore>
#include <QtWidgets>
class Pixmap : public QGraphicsWidget
{
Q_OBJECT
public:
Pixmap(const QPixmap &pix, QGraphicsItem *parent = 0)
: QGraphicsWidget(parent), orig(pix), p(pix)
{
}
void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
painter->drawPixmap(QPointF(), p);
}
virtual void mousePressEvent(QGraphicsSceneMouseEvent * )
{
emit clicked();
}
virtual void setGeometry(const QRectF &rect)
{
QGraphicsWidget::setGeometry(rect);
if (rect.size().width() > orig.size().width())
p = orig.scaled(rect.size().toSize());
else
p = orig;
}
Q_SIGNALS:
void clicked();
private:
QPixmap orig;
QPixmap p;
};
class GraphicsView : public QGraphicsView
{
Q_OBJECT
public:
GraphicsView(QGraphicsScene *scene, QWidget *parent = 0) : QGraphicsView(scene, parent)
{
}
virtual void resizeEvent(QResizeEvent *)
{
fitInView(sceneRect(), Qt::KeepAspectRatio);
}
};
void createStates(const QObjectList &objects,
const QRect &selectedRect, QState *parent)
{
for (int i = 0; i < objects.size(); ++i) {
QState *state = new QState(parent);
state->assignProperty(objects.at(i), "geometry", selectedRect);
parent->addTransition(objects.at(i), SIGNAL(clicked()), state);
}
}
void createAnimations(const QObjectList &objects, QStateMachine *machine)
{
for (int i=0; i<objects.size(); ++i)
machine->addDefaultAnimation(new QPropertyAnimation(objects.at(i), "geometry"));
}
int main(int argc, char **argv)
{
Q_INIT_RESOURCE(appchooser);
QApplication app(argc, argv);
Pixmap *p1 = new Pixmap(QPixmap(":/digikam.png"));
Pixmap *p2 = new Pixmap(QPixmap(":/akregator.png"));
Pixmap *p3 = new Pixmap(QPixmap(":/accessories-dictionary.png"));
Pixmap *p4 = new Pixmap(QPixmap(":/k3b.png"));
p1->setObjectName("p1");
p2->setObjectName("p2");
p3->setObjectName("p3");
p4->setObjectName("p4");
p1->setGeometry(QRectF( 0.0, 0.0, 64.0, 64.0));
p2->setGeometry(QRectF(236.0, 0.0, 64.0, 64.0));
p3->setGeometry(QRectF(236.0, 236.0, 64.0, 64.0));
p4->setGeometry(QRectF( 0.0, 236.0, 64.0, 64.0));
QGraphicsScene scene(0, 0, 300, 300);
scene.setBackgroundBrush(Qt::white);
scene.addItem(p1);
scene.addItem(p2);
scene.addItem(p3);
scene.addItem(p4);
GraphicsView window(&scene);
window.setFrameStyle(0);
window.setAlignment(Qt::AlignLeft | Qt::AlignTop);
window.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
window.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
QStateMachine machine;
machine.setGlobalRestorePolicy(QState::RestoreProperties);
QState *group = new QState(&machine);
group->setObjectName("group");
QRect selectedRect(86, 86, 128, 128);
QState *idleState = new QState(group);
group->setInitialState(idleState);
QObjectList objects;
objects << p1 << p2 << p3 << p4;
createStates(objects, selectedRect, group);
createAnimations(objects, &machine);
machine.setInitialState(group);
machine.start();
window.resize(300, 300);
window.show();
return app.exec();
}
#include "main.moc"
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