/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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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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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "informationwindow.h"+
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#include "imageitem.h"+
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#include "view.h"+
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+
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//! [0]+
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View::View(const QString &offices, const QString &images, QWidget *parent)+
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    : QGraphicsView(parent)+
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{+
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    officeTable = new QSqlRelationalTableModel(this);+
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    officeTable->setTable(offices);+
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    officeTable->setRelation(1, QSqlRelation(images, "locationid", "file"));+
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    officeTable->select();+
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//! [0]+
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+
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//! [1]+
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    scene = new QGraphicsScene(this);+
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    scene->setSceneRect(0, 0, 465, 615);+
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    setScene(scene);+
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+
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    addItems();+
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+
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    QGraphicsPixmapItem *logo = scene->addPixmap(QPixmap(":/logo.png"));+
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    logo->setPos(30, 515);+
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+
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#ifndef Q_OS_SYMBIAN+
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    setMinimumSize(470, 620);+
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    setMaximumSize(470, 620);+
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#else+
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    setDragMode(QGraphicsView::ScrollHandDrag);+
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#endif+
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+
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   setWindowTitle(tr("Offices World Wide"));+
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}+
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//! [1]+
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+
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//! [3]+
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void View::addItems()+
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{+
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    int officeCount = officeTable->rowCount();+
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+
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    int imageOffset = 150;+
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    int leftMargin = 70;+
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    int topMargin = 40;+
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+
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    for (int i = 0; i < officeCount; i++) {+
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        ImageItem *image;+
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        QGraphicsTextItem *label;+
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        QSqlRecord record = officeTable->record(i);+
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+
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        int id = record.value("id").toInt();+
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        QString file = record.value("file").toString();+
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        QString location = record.value("location").toString();+
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+
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        int columnOffset = ((i / 3) * 37);+
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        int x = ((i / 3) * imageOffset) + leftMargin + columnOffset;+
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        int y = ((i % 3) * imageOffset) + topMargin;+
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+
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        image = new ImageItem(id, QPixmap(":/" + file));+
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        image->setData(0, i);+
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        image->setPos(x, y);+
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        scene->addItem(image);+
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+
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        label = scene->addText(location);+
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        QPointF labelOffset((150 - label->boundingRect().width()) / 2, 120.0);+
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        label->setPos(QPointF(x, y) + labelOffset);+
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    }+
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}+
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//! [3]+
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+
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//! [5]+
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void View::mouseReleaseEvent(QMouseEvent *event)+
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{+
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    if (QGraphicsItem *item = itemAt(event->pos())) {+
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        if (ImageItem *image = qgraphicsitem_cast<ImageItem *>(item))+
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            showInformation(image);+
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    }+
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    QGraphicsView::mouseReleaseEvent(event);+
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}+
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//! [5]+
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+
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//! [6]+
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void View::showInformation(ImageItem *image)+
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{+
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    int id = image->id();+
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    if (id < 0 || id >= officeTable->rowCount())+
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        return;+
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+
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    InformationWindow *window = findWindow(id);+
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    if (window && window->isVisible()) {+
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        window->raise();+
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        window->activateWindow();+
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    } else if (window && !window->isVisible()) {+
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#ifndef Q_OS_SYMBIAN+
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        window->show();+
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#else+
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        window->showMaximized();+
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#endif+
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    } else {+
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        InformationWindow *window;+
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        window = new InformationWindow(id, officeTable, this);+
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+
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        connect(window, SIGNAL(imageChanged(int,QString)),+
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                this, SLOT(updateImage(int,QString)));+
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+
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#ifndef Q_OS_SYMBIAN+
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        window->move(pos() + QPoint(20, 40));+
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        window->show();+
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#else+
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        window->showMaximized();+
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#endif+
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        informationWindows.append(window);+
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    }+
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}+
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//! [6]+
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+
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//! [7]+
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void View::updateImage(int id, const QString &fileName)+
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{+
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    QList<QGraphicsItem *> items = scene->items();+
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+
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    while(!items.empty()) {+
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        QGraphicsItem *item = items.takeFirst();+
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+
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        if (ImageItem *image = qgraphicsitem_cast<ImageItem *>(item)) {+
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            if (image->id() == id){+
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                image->setPixmap(QPixmap(":/" +fileName));+
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                image->adjust();+
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                break;+
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            }+
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        }+
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    }+
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}+
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//! [7]+
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+
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//! [8]+
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InformationWindow* View::findWindow(int id)+
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{+
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    QList<InformationWindow*>::iterator i, beginning, end;+
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+
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    beginning = informationWindows.begin();+
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    end = informationWindows.end();+
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+
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    for (i = beginning; i != end; ++i) {+
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        InformationWindow *window = (*i);+
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        if (window && (window->id() == id))+
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            return window;+
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    }+
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    return 0;+
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}+
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//! [8]+
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+
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