/****************************************************************************

**

** 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 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->showMaximized();

#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->showMaximized();

#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]