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/****************************************************************************
**
** 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 examples 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 "informationwindow.h"
#include "imageitem.h"
#include "view.h"
//! [0]
View::View(const QString &offices, const QString &images, QWidget *parent)
: QGraphicsView(parent)
{
officeTable = new QSqlRelationalTableModel(this);
officeTable->setTable(offices);
officeTable->setRelation(1, QSqlRelation(images, "locationid", "file"));
officeTable->select();
//! [0]
//! [1]
scene = new QGraphicsScene(this);
scene->setSceneRect(0, 0, 465, 615);
setScene(scene);
addItems();
QGraphicsPixmapItem *logo = scene->addPixmap(QPixmap(":/logo.png"));
logo->setPos(30, 515);
#ifndef Q_OS_SYMBIAN
setMinimumSize(470, 620);
setMaximumSize(470, 620);
#else
setDragMode(QGraphicsView::ScrollHandDrag);
#endif
setWindowTitle(tr("Offices World Wide"));
}
//! [1]
//! [3]
void View::addItems()
{
int officeCount = officeTable->rowCount();
int imageOffset = 150;
int leftMargin = 70;
int topMargin = 40;
for (int i = 0; i < officeCount; i++) {
ImageItem *image;
QGraphicsTextItem *label;
QSqlRecord record = officeTable->record(i);
int id = record.value("id").toInt();
QString file = record.value("file").toString();
QString location = record.value("location").toString();
int columnOffset = ((i / 3) * 37);
int x = ((i / 3) * imageOffset) + leftMargin + columnOffset;
int y = ((i % 3) * imageOffset) + topMargin;
image = new ImageItem(id, QPixmap(":/" + file));
image->setData(0, i);
image->setPos(x, y);
scene->addItem(image);
label = scene->addText(location);
QPointF labelOffset((150 - label->boundingRect().width()) / 2, 120.0);
label->setPos(QPointF(x, y) + labelOffset);
}
}
//! [3]
//! [5]
void View::mouseReleaseEvent(QMouseEvent *event)
{
if (QGraphicsItem *item = itemAt(event->pos())) {
if (ImageItem *image = qgraphicsitem_cast<ImageItem *>(item))
showInformation(image);
}
QGraphicsView::mouseReleaseEvent(event);
}
//! [5]
//! [6]
void View::showInformation(ImageItem *image)
{
int id = image->id();
if (id < 0 || id >= officeTable->rowCount())
return;
InformationWindow *window = findWindow(id);
if (window && window->isVisible()) {
window->raise();
window->activateWindow();
} else if (window && !window->isVisible()) {
#ifndef Q_OS_SYMBIAN
window->show();
#else
window->showFullScreen();
#endif
} else {
InformationWindow *window;
window = new InformationWindow(id, officeTable, this);
connect(window, SIGNAL(imageChanged(int, QString)),
this, SLOT(updateImage(int, QString)));
#ifndef Q_OS_SYMBIAN
window->move(pos() + QPoint(20, 40));
window->show();
#else
window->showFullScreen();
#endif
informationWindows.append(window);
}
}
//! [6]
//! [7]
void View::updateImage(int id, const QString &fileName)
{
QList<QGraphicsItem *> items = scene->items();
while(!items.empty()) {
QGraphicsItem *item = items.takeFirst();
if (ImageItem *image = qgraphicsitem_cast<ImageItem *>(item)) {
if (image->id() == id){
image->setPixmap(QPixmap(":/" +fileName));
image->adjust();
break;
}
}
}
}
//! [7]
//! [8]
InformationWindow* View::findWindow(int id)
{
QList<InformationWindow*>::iterator i, beginning, end;
beginning = informationWindows.begin();
end = informationWindows.end();
for (i = beginning; i != end; ++i) {
InformationWindow *window = (*i);
if (window && (window->id() == id))
return window;
}
return 0;
}
//! [8]
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