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Diffstat (limited to 'examples/datavisualization/itemmodel/main.cpp')
| -rw-r--r-- | examples/datavisualization/itemmodel/main.cpp | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/examples/datavisualization/itemmodel/main.cpp b/examples/datavisualization/itemmodel/main.cpp new file mode 100644 index 00000000..2fce72aa --- /dev/null +++ b/examples/datavisualization/itemmodel/main.cpp @@ -0,0 +1,285 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc +** All rights reserved. +** For any questions to Digia, please use contact form at http://qt.digia.com +** +** This file is part of the QtDataVisualization module. +** +** Licensees holding valid Qt Enterprise licenses may use this file in +** accordance with the Qt Enterprise License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. +** +** If you have questions regarding the use of this file, please use +** contact form at http://qt.digia.com +** +****************************************************************************/ + +#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 <QApplication> +#include <QVBoxLayout> +#include <QTableWidget> +#include <QScreen> +#include <QTimer> +#include <QFont> +#include <QDebug> +#include <QHeaderView> + +#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; + QTimer *m_styleTimer; + QTimer *m_presetTimer; + QTimer *m_themeTimer; + int m_columnCount; + int m_rowCount; + QTableWidget *m_tableWidget; // not owned +}; + +GraphDataGenerator::GraphDataGenerator(Q3DBars *bargraph, QTableWidget *tableWidget) + : m_graph(bargraph), + m_dataTimer(0), + m_styleTimer(0), + m_presetTimer(0), + m_themeTimer(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->columnAxis()->setTitle("Day of week"); + m_graph->valueAxis()->setTitle("Hours spent on the Internet"); + 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); + //! [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)(rand() % 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] + + 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] +} |