| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Data Visualization module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) any later version |
| ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include <QtDataVisualization/q3dbars.h> |
| #include <QtDataVisualization/qcategory3daxis.h> |
| #include <QtDataVisualization/qitemmodelbardataproxy.h> |
| #include <QtDataVisualization/qvalue3daxis.h> |
| #include <QtDataVisualization/q3dscene.h> |
| #include <QtDataVisualization/q3dcamera.h> |
| #include <QtDataVisualization/qbar3dseries.h> |
| #include <QtDataVisualization/q3dtheme.h> |
| |
| #include <QtWidgets/QApplication> |
| #include <QtWidgets/QVBoxLayout> |
| #include <QtWidgets/QTableWidget> |
| #include <QtGui/QScreen> |
| #include <QtCore/QRandomGenerator> |
| #include <QtCore/QTimer> |
| #include <QtGui/QFont> |
| #include <QtCore/QDebug> |
| #include <QtWidgets/QHeaderView> |
| #include <QtWidgets/QMessageBox> |
| |
| #define USE_STATIC_DATA |
| |
| using namespace QtDataVisualization; |
| |
| class GraphDataGenerator : public QObject |
| { |
| public: |
| explicit GraphDataGenerator(Q3DBars *bargraph, QTableWidget *tableWidget); |
| ~GraphDataGenerator(); |
| |
| void setupModel(); |
| void addRow(); |
| void changeStyle(); |
| void changePresetCamera(); |
| void changeTheme(); |
| void start(); |
| void selectFromTable(const QPoint &selection); |
| void selectedFromTable(int currentRow, int currentColumn, int previousRow, int previousColumn); |
| void fixTableSize(); |
| |
| private: |
| Q3DBars *m_graph; |
| QTimer *m_dataTimer; |
| int m_columnCount; |
| int m_rowCount; |
| QTableWidget *m_tableWidget; // not owned |
| }; |
| |
| GraphDataGenerator::GraphDataGenerator(Q3DBars *bargraph, QTableWidget *tableWidget) |
| : m_graph(bargraph), |
| m_dataTimer(0), |
| m_columnCount(100), |
| m_rowCount(50), |
| m_tableWidget(tableWidget) |
| { |
| //! [5] |
| // Set up bar specifications; make the bars as wide as they are deep, |
| // and add a small space between them |
| m_graph->setBarThickness(1.0f); |
| m_graph->setBarSpacing(QSizeF(0.2, 0.2)); |
| |
| //! [5] |
| #ifndef USE_STATIC_DATA |
| // Set up sample space; make it as deep as it's wide |
| m_graph->rowAxis()->setRange(0, m_rowCount); |
| m_graph->columnAxis()->setRange(0, m_columnCount); |
| m_tableWidget->setColumnCount(m_columnCount); |
| |
| // Set selection mode to full |
| m_graph->setSelectionMode(QAbstract3DGraph::SelectionItemRowAndColumn); |
| |
| // Hide axis labels by explicitly setting one empty string as label list |
| m_graph->rowAxis()->setLabels(QStringList(QString())); |
| m_graph->columnAxis()->setLabels(QStringList(QString())); |
| |
| m_graph->seriesList().at(0)->setItemLabelFormat(QStringLiteral("@valueLabel")); |
| #else |
| //! [6] |
| // Set selection mode to slice row |
| m_graph->setSelectionMode(QAbstract3DGraph::SelectionItemAndRow | QAbstract3DGraph::SelectionSlice); |
| |
| //! [6] |
| #endif |
| |
| //! [7] |
| // Set theme |
| m_graph->activeTheme()->setType(Q3DTheme::ThemeDigia); |
| |
| // Set font |
| m_graph->activeTheme()->setFont(QFont("Impact", 20)); |
| |
| // Set preset camera position |
| m_graph->scene()->activeCamera()->setCameraPreset(Q3DCamera::CameraPresetFront); |
| //! [7] |
| } |
| |
| GraphDataGenerator::~GraphDataGenerator() |
| { |
| if (m_dataTimer) { |
| m_dataTimer->stop(); |
| delete m_dataTimer; |
| } |
| delete m_graph; |
| } |
| |
| void GraphDataGenerator::start() |
| { |
| #ifndef USE_STATIC_DATA |
| m_dataTimer = new QTimer(); |
| m_dataTimer->setTimerType(Qt::CoarseTimer); |
| QObject::connect(m_dataTimer, &QTimer::timeout, this, &GraphDataGenerator::addRow); |
| m_dataTimer->start(0); |
| m_tableWidget->setFixedWidth(m_graph->width()); |
| #else |
| //! [8] |
| setupModel(); |
| |
| // Table needs to be shown before the size of its headers can be accurately obtained, |
| // so we postpone it a bit |
| m_dataTimer = new QTimer(); |
| m_dataTimer->setSingleShot(true); |
| QObject::connect(m_dataTimer, &QTimer::timeout, this, &GraphDataGenerator::fixTableSize); |
| m_dataTimer->start(0); |
| //! [8] |
| #endif |
| } |
| |
| void GraphDataGenerator::setupModel() |
| { |
| //! [9] |
| // Set up row and column names |
| QStringList days; |
| days << "Monday" << "Tuesday" << "Wednesday" << "Thursday" << "Friday" << "Saturday" << "Sunday"; |
| QStringList weeks; |
| weeks << "week 1" << "week 2" << "week 3" << "week 4" << "week 5"; |
| |
| // Set up data Mon Tue Wed Thu Fri Sat Sun |
| float hours[5][7] = {{2.0f, 1.0f, 3.0f, 0.2f, 1.0f, 5.0f, 10.0f}, // week 1 |
| {0.5f, 1.0f, 3.0f, 1.0f, 2.0f, 2.0f, 3.0f}, // week 2 |
| {1.0f, 1.0f, 2.0f, 1.0f, 4.0f, 4.0f, 4.0f}, // week 3 |
| {0.0f, 1.0f, 0.0f, 0.0f, 2.0f, 2.0f, 0.3f}, // week 4 |
| {3.0f, 3.0f, 6.0f, 2.0f, 2.0f, 1.0f, 1.0f}}; // week 5 |
| //! [9] |
| |
| // Add labels |
| //! [10] |
| m_graph->rowAxis()->setTitle("Week of year"); |
| m_graph->rowAxis()->setTitleVisible(true); |
| m_graph->columnAxis()->setTitle("Day of week"); |
| m_graph->columnAxis()->setTitleVisible(true); |
| m_graph->valueAxis()->setTitle("Hours spent on the Internet"); |
| m_graph->valueAxis()->setTitleVisible(true); |
| m_graph->valueAxis()->setLabelFormat("%.1f h"); |
| //! [10] |
| |
| //! [11] |
| m_tableWidget->setRowCount(5); |
| m_tableWidget->setColumnCount(7); |
| m_tableWidget->setHorizontalHeaderLabels(days); |
| m_tableWidget->setVerticalHeaderLabels(weeks); |
| m_tableWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); |
| m_tableWidget->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); |
| m_tableWidget->setCurrentCell(-1, -1); |
| m_tableWidget->setSelectionMode(QAbstractItemView::SingleSelection); |
| //! [11] |
| |
| //! [12] |
| for (int week = 0; week < weeks.size(); week++) { |
| for (int day = 0; day < days.size(); day++) { |
| QModelIndex index = m_tableWidget->model()->index(week, day); |
| m_tableWidget->model()->setData(index, hours[week][day]); |
| } |
| } |
| //! [12] |
| } |
| |
| void GraphDataGenerator::addRow() |
| { |
| m_tableWidget->model()->insertRow(0); |
| if (m_tableWidget->model()->rowCount() > m_rowCount) |
| m_tableWidget->model()->removeRow(m_rowCount); |
| for (int i = 0; i < m_columnCount; i++) { |
| QModelIndex index = m_tableWidget->model()->index(0, i); |
| m_tableWidget->model()->setData(index, |
| ((float)i / (float)m_columnCount) / 2.0f + |
| (float)(QRandomGenerator::global()->bounded(30)) / 100.0f); |
| } |
| m_tableWidget->resizeColumnsToContents(); |
| } |
| |
| //! [13] |
| void GraphDataGenerator::selectFromTable(const QPoint &selection) |
| { |
| m_tableWidget->setFocus(); |
| m_tableWidget->setCurrentCell(selection.x(), selection.y()); |
| } |
| //! [13] |
| |
| //! [14] |
| void GraphDataGenerator::selectedFromTable(int currentRow, int currentColumn, |
| int previousRow, int previousColumn) |
| { |
| Q_UNUSED(previousRow) |
| Q_UNUSED(previousColumn) |
| m_graph->seriesList().at(0)->setSelectedBar(QPoint(currentRow, currentColumn)); |
| } |
| //! [14] |
| |
| void GraphDataGenerator::fixTableSize() |
| { |
| int width = m_tableWidget->horizontalHeader()->length(); |
| width += m_tableWidget->verticalHeader()->width(); |
| m_tableWidget->setFixedWidth(width + 2); |
| int height = m_tableWidget->verticalHeader()->length(); |
| height += m_tableWidget->horizontalHeader()->height(); |
| m_tableWidget->setFixedHeight(height + 2); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| //! [0] |
| QApplication app(argc, argv); |
| Q3DBars *graph = new Q3DBars(); |
| QWidget *container = QWidget::createWindowContainer(graph); |
| //! [0] |
| |
| if (!graph->hasContext()) { |
| QMessageBox msgBox; |
| msgBox.setText("Couldn't initialize the OpenGL context."); |
| msgBox.exec(); |
| return -1; |
| } |
| |
| QSize screenSize = graph->screen()->size(); |
| container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 2)); |
| container->setMaximumSize(screenSize); |
| container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); |
| container->setFocusPolicy(Qt::StrongFocus); |
| |
| //! [1] |
| QWidget widget; |
| QVBoxLayout *layout = new QVBoxLayout(&widget); |
| QTableWidget *tableWidget = new QTableWidget(&widget); |
| layout->addWidget(container, 1); |
| layout->addWidget(tableWidget, 1, Qt::AlignHCenter); |
| //! [1] |
| |
| tableWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed); |
| tableWidget->setAlternatingRowColors(true); |
| widget.setWindowTitle(QStringLiteral("Hours spent on the Internet")); |
| |
| //! [2] |
| // Since we are dealing with QTableWidget, the model will already have data sorted properly |
| // into rows and columns, so we simply set useModelCategories property to true to utilize this. |
| QItemModelBarDataProxy *proxy = new QItemModelBarDataProxy(tableWidget->model()); |
| proxy->setUseModelCategories(true); |
| QBar3DSeries *series = new QBar3DSeries(proxy); |
| series->setMesh(QAbstract3DSeries::MeshPyramid); |
| graph->addSeries(series); |
| //! [2] |
| |
| //! [3] |
| GraphDataGenerator generator(graph, tableWidget); |
| QObject::connect(series, &QBar3DSeries::selectedBarChanged, &generator, |
| &GraphDataGenerator::selectFromTable); |
| QObject::connect(tableWidget, &QTableWidget::currentCellChanged, &generator, |
| &GraphDataGenerator::selectedFromTable); |
| //! [3] |
| |
| //! [4] |
| widget.show(); |
| generator.start(); |
| return app.exec(); |
| //! [4] |
| } |