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/****************************************************************************
**
** Copyright (C) 2013 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/q3dcategoryaxis.h>
#include <QtDataVisualization/qitemmodelbardataproxy.h>
#include <QtDataVisualization/q3dvalueaxis.h>
#include <QApplication>
#include <QVBoxLayout>
#include <QTableWidget>
#include <QScreen>
#include <QTimer>
#include <QFont>
#include <QDebug>
#define USE_STATIC_DATA
using namespace QtDataVisualization;
class ChartDataGenerator : public QObject
{
public:
explicit ChartDataGenerator(Q3DBars *barchart, QTableWidget *tableWidget);
~ChartDataGenerator();
void setupModel();
void addRow();
void changeStyle();
void changePresetCamera();
void changeTheme();
void start();
void selectFromTable(const QPoint &selection);
void selectedFromTable(int row, int column);
private:
Q3DBars *m_chart;
QTimer *m_dataTimer;
QTimer *m_styleTimer;
QTimer *m_presetTimer;
QTimer *m_themeTimer;
int m_columnCount;
int m_rowCount;
QTableWidget *m_tableWidget; // not owned
};
ChartDataGenerator::ChartDataGenerator(Q3DBars *barchart, QTableWidget *tableWidget)
: m_chart(barchart),
m_dataTimer(0),
m_styleTimer(0),
m_presetTimer(0),
m_themeTimer(0),
m_columnCount(100),
m_rowCount(50),
m_tableWidget(tableWidget)
{
// Set up bar specifications; make the bars as wide as they are deep,
// and add a small space between the bars
m_chart->setBarSpecs(1.0, QSizeF(0.2, 0.2));
#ifndef USE_STATIC_DATA
// Set up sample space; make it as deep as it's wide
m_chart->setDataWindow(m_rowCount, m_columnCount);
m_tableWidget->setColumnCount(m_columnCount);
#endif
// Set bar type to flat pyramids
m_chart->setBarType(QDataVis::Pyramids, false);
#ifndef USE_STATIC_DATA
// Set selection mode to full
m_chart->setSelectionMode(QDataVis::ModeItemRowAndColumn);
#else
// Set selection mode to zoom row
m_chart->setSelectionMode(QDataVis::ModeSliceRow);
m_chart->setFont(QFont("Impact", 25));
#endif
// Set theme
m_chart->setTheme(QDataVis::ThemeLight);
// Set preset camera position
m_chart->setCameraPreset(QDataVis::PresetFront);
}
ChartDataGenerator::~ChartDataGenerator()
{
if (m_dataTimer) {
m_dataTimer->stop();
delete m_dataTimer;
}
delete m_chart;
}
void ChartDataGenerator::start()
{
#ifndef USE_STATIC_DATA
m_dataTimer = new QTimer();
m_dataTimer->setTimerType(Qt::CoarseTimer);
m_dataTimer->setInterval(500);
QObject::connect(m_dataTimer, &QTimer::timeout, this, &ChartDataGenerator::addRow);
m_dataTimer->start(500);
m_tableWidget->setFixedWidth(m_chart->width());
#else
setupModel();
#endif
}
void ChartDataGenerator::setupModel()
{
// 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
// Add labels
m_chart->rowAxis()->setTitle("Week of year");
m_chart->columnAxis()->setTitle("Day of week");
m_chart->valueAxis()->setTitle("Hours playing banjo");
m_chart->valueAxis()->setSegmentCount(5);
m_chart->valueAxis()->setLabelFormat("%.1f h");
m_chart->rowAxis()->setCategoryLabels(weeks);
m_chart->columnAxis()->setCategoryLabels(days);
m_tableWidget->setRowCount(5);
m_tableWidget->setColumnCount(7);
m_tableWidget->setHorizontalHeaderLabels(days);
m_tableWidget->setVerticalHeaderLabels(weeks);
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]);
}
}
m_tableWidget->setFixedWidth(600);
// Set up sample space based on prepared data
m_chart->setDataWindow(weeks.size(), days.size());
}
void ChartDataGenerator::addRow()
{
m_tableWidget->model()->insertRow(0);
for (int i = 0; i < m_columnCount; i++) {
QModelIndex index = m_tableWidget->model()->index(0, i);
m_tableWidget->model()->setData(index,
((qreal)i / (qreal)m_columnCount) / 2.0 + (qreal)(rand() % 30) / 100.0);
}
m_tableWidget->resizeColumnsToContents();
}
void ChartDataGenerator::selectFromTable(const QPoint &selection)
{
m_tableWidget->setFocus();
m_tableWidget->setCurrentCell(selection.x(), selection.y());
}
void ChartDataGenerator::selectedFromTable(int row, int column)
{
m_chart->setSelectedBarPos(QPoint(row, column));
}
int main(int argc, char **argv)
{
QApplication app(argc, argv);
QWidget *widget = new QWidget;
QVBoxLayout *layout = new QVBoxLayout(widget);
Q3DBars *chart = new Q3DBars();
QSize screenSize = chart->screen()->size();
QWidget *container = QWidget::createWindowContainer(chart);
container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 2));
container->setMaximumSize(screenSize);
container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
container->setFocusPolicy(Qt::StrongFocus);
widget->setWindowTitle(QStringLiteral("Hours playing banjo"));
QTableWidget *tableWidget = new QTableWidget(widget);
tableWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
tableWidget->setAlternatingRowColors(true);
layout->addWidget(container, 1);
layout->addWidget(tableWidget, 1, Qt::AlignHCenter);
// We don't need to initialize the mapping object in any way, as it defaults
// to row/column support and uses the Qt::DisplayRole role for value role by default.
QItemModelBarDataProxy *proxy = new QItemModelBarDataProxy(tableWidget->model(),
new QItemModelBarDataMapping);
chart->setActiveDataProxy(proxy);
ChartDataGenerator *generator = new ChartDataGenerator(chart, tableWidget);
QObject::connect(chart, &Q3DBars::selectedBarPosChanged, generator,
&ChartDataGenerator::selectFromTable);
QObject::connect(tableWidget, &QTableWidget::cellClicked, generator,
&ChartDataGenerator::selectedFromTable);
widget->show();
generator->start();
return app.exec();
}
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