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** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of the Qt Data Visualization module of the Qt Toolkit.
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#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_DATAusingnamespaceQtDataVisualization;
class GraphDataGenerator : publicQObject
{
public:
explicit GraphDataGenerator(Q3DBars*bargraph,QTableWidget*tableWidget);
~GraphDataGenerator();
void setupModel();
void addRow();
void changeStyle();
void changePresetCamera();
void changeTheme();
void start();
void selectFromTable(constQPoint&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)
{
// 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));
#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// Set selection mode to slice row
m_graph->setSelectionMode(QAbstract3DGraph::SelectionItemAndRow | QAbstract3DGraph::SelectionSlice);
#endif// 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);
}
GraphDataGenerator::~GraphDataGenerator()
{
if (m_dataTimer) {
m_dataTimer->stop();
delete m_dataTimer;
}
delete m_graph;
}
void GraphDataGenerator::start()
{
#ifndef USE_STATIC_DATA
m_dataTimer =newQTimer();
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
setupModel();
// Table needs to be shown before the size of its headers can be accurately obtained,// so we postpone it a bit
m_dataTimer =newQTimer();
m_dataTimer->setSingleShot(true);
QObject::connect(m_dataTimer,&QTimer::timeout,this,&GraphDataGenerator::fixTableSize);
m_dataTimer->start(0);
#endif
}
void GraphDataGenerator::setupModel()
{
// Set up row and column namesQStringList 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 Sunfloat 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_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");
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);
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]);
}
}
}
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();
}
void GraphDataGenerator::selectFromTable(constQPoint&selection)
{
m_tableWidget->setFocus();
m_tableWidget->setCurrentCell(selection.x(), selection.y());
}
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));
}
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)
{
QApplication app(argc, argv);
Q3DBars*graph =newQ3DBars();
QWidget*container =QWidget::createWindowContainer(graph);
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);
QWidget widget;
QVBoxLayout*layout =newQVBoxLayout(&widget);
QTableWidget*tableWidget =newQTableWidget(&widget);
layout->addWidget(container,1);
layout->addWidget(tableWidget,1,Qt::AlignHCenter);
tableWidget->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed);
tableWidget->setAlternatingRowColors(true);
widget.setWindowTitle(QStringLiteral("Hours spent on the Internet"));
// 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 =newQItemModelBarDataProxy(tableWidget->model());
proxy->setUseModelCategories(true);
QBar3DSeries *series =new QBar3DSeries(proxy);
series->setMesh(QAbstract3DSeries::MeshPyramid);
graph->addSeries(series);
GraphDataGenerator generator(graph, tableWidget);
QObject::connect(series,&QBar3DSeries::selectedBarChanged,&generator,&GraphDataGenerator::selectFromTable);
QObject::connect(tableWidget,&QTableWidget::currentCellChanged,&generator,&GraphDataGenerator::selectedFromTable);
widget.show();
generator.start();
return app.exec();
}
