Long live Qt 4.5!

1 files changed, 179 insertions, 0 deletions

diff --git a/examples/sql/drilldown/view.cpp b/examples/sql/drilldown/view.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@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);
+
+    setMinimumSize(470, 620);
+    setMaximumSize(470, 620);
+    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()) {
+        window->show();
+    } else {
+        InformationWindow *window;
+        window = new InformationWindow(id, officeTable, this);
+
+        connect(window, SIGNAL(imageChanged(int, QString)),
+                this, SLOT(updateImage(int, QString)));
+
+        window->move(pos() + QPoint(20, 40));
+        window->show();
+        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]
+