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Diffstat (limited to 'examples/sql/drilldown/view.cpp')
| -rw-r--r-- | examples/sql/drilldown/view.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/examples/sql/drilldown/view.cpp b/examples/sql/drilldown/view.cpp new file mode 100644 index 0000000000..68fe06a8e2 --- /dev/null +++ b/examples/sql/drilldown/view.cpp @@ -0,0 +1,191 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation 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 "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] + |