mirror of https://github.com/qt/qtdatavis3d.git
286 lines
9.3 KiB
C++
286 lines
9.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the QtDataVisualization module.
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**
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** Licensees holding valid Qt Enterprise licenses may use this file in
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** accordance with the Qt Enterprise License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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**
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****************************************************************************/
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#include <QtDataVisualization/q3dbars.h>
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#include <QtDataVisualization/qcategory3daxis.h>
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#include <QtDataVisualization/qitemmodelbardataproxy.h>
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#include <QtDataVisualization/qvalue3daxis.h>
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#include <QtDataVisualization/q3dscene.h>
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#include <QtDataVisualization/q3dcamera.h>
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#include <QtDataVisualization/qbar3dseries.h>
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#include <QtDataVisualization/q3dtheme.h>
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#include <QApplication>
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#include <QVBoxLayout>
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#include <QTableWidget>
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#include <QScreen>
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#include <QTimer>
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#include <QFont>
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#include <QDebug>
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#include <QHeaderView>
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#define USE_STATIC_DATA
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using namespace QtDataVisualization;
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class GraphDataGenerator : public QObject
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{
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public:
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explicit GraphDataGenerator(Q3DBars *bargraph, QTableWidget *tableWidget);
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~GraphDataGenerator();
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void setupModel();
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void addRow();
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void changeStyle();
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void changePresetCamera();
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void changeTheme();
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void start();
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void selectFromTable(const QPoint &selection);
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void selectedFromTable(int currentRow, int currentColumn, int previousRow, int previousColumn);
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void fixTableSize();
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private:
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Q3DBars *m_graph;
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QTimer *m_dataTimer;
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QTimer *m_styleTimer;
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QTimer *m_presetTimer;
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QTimer *m_themeTimer;
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int m_columnCount;
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int m_rowCount;
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QTableWidget *m_tableWidget; // not owned
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};
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GraphDataGenerator::GraphDataGenerator(Q3DBars *bargraph, QTableWidget *tableWidget)
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: m_graph(bargraph),
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m_dataTimer(0),
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m_styleTimer(0),
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m_presetTimer(0),
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m_themeTimer(0),
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m_columnCount(100),
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m_rowCount(50),
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m_tableWidget(tableWidget)
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{
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//! [5]
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// Set up bar specifications; make the bars as wide as they are deep,
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// and add a small space between them
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m_graph->setBarThickness(1.0f);
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m_graph->setBarSpacing(QSizeF(0.2, 0.2));
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//! [5]
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#ifndef USE_STATIC_DATA
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// Set up sample space; make it as deep as it's wide
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m_graph->rowAxis()->setRange(0, m_rowCount);
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m_graph->columnAxis()->setRange(0, m_columnCount);
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m_tableWidget->setColumnCount(m_columnCount);
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// Set selection mode to full
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m_graph->setSelectionMode(QAbstract3DGraph::SelectionItemRowAndColumn);
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// Hide axis labels by explicitly setting one empty string as label list
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m_graph->rowAxis()->setLabels(QStringList(QString()));
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m_graph->columnAxis()->setLabels(QStringList(QString()));
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m_graph->seriesList().at(0)->setItemLabelFormat(QStringLiteral("@valueLabel"));
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#else
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//! [6]
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// Set selection mode to slice row
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m_graph->setSelectionMode(QAbstract3DGraph::SelectionItemAndRow | QAbstract3DGraph::SelectionSlice);
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//! [6]
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#endif
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//! [7]
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// Set theme
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m_graph->activeTheme()->setType(Q3DTheme::ThemeDigia);
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// Set font
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m_graph->activeTheme()->setFont(QFont("Impact", 20));
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// Set preset camera position
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m_graph->scene()->activeCamera()->setCameraPreset(Q3DCamera::CameraPresetFront);
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//! [7]
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}
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GraphDataGenerator::~GraphDataGenerator()
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{
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if (m_dataTimer) {
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m_dataTimer->stop();
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delete m_dataTimer;
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}
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delete m_graph;
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}
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void GraphDataGenerator::start()
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{
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#ifndef USE_STATIC_DATA
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m_dataTimer = new QTimer();
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m_dataTimer->setTimerType(Qt::CoarseTimer);
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QObject::connect(m_dataTimer, &QTimer::timeout, this, &GraphDataGenerator::addRow);
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m_dataTimer->start(0);
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m_tableWidget->setFixedWidth(m_graph->width());
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#else
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//! [8]
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setupModel();
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// Table needs to be shown before the size of its headers can be accurately obtained,
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// so we postpone it a bit
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m_dataTimer = new QTimer();
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m_dataTimer->setSingleShot(true);
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QObject::connect(m_dataTimer, &QTimer::timeout, this, &GraphDataGenerator::fixTableSize);
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m_dataTimer->start(0);
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//! [8]
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#endif
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}
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void GraphDataGenerator::setupModel()
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{
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//! [9]
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// Set up row and column names
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QStringList days;
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days << "Monday" << "Tuesday" << "Wednesday" << "Thursday" << "Friday" << "Saturday" << "Sunday";
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QStringList weeks;
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weeks << "week 1" << "week 2" << "week 3" << "week 4" << "week 5";
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// Set up data Mon Tue Wed Thu Fri Sat Sun
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float hours[5][7] = {{2.0f, 1.0f, 3.0f, 0.2f, 1.0f, 5.0f, 10.0f}, // week 1
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{0.5f, 1.0f, 3.0f, 1.0f, 2.0f, 2.0f, 3.0f}, // week 2
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{1.0f, 1.0f, 2.0f, 1.0f, 4.0f, 4.0f, 4.0f}, // week 3
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{0.0f, 1.0f, 0.0f, 0.0f, 2.0f, 2.0f, 0.3f}, // week 4
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{3.0f, 3.0f, 6.0f, 2.0f, 2.0f, 1.0f, 1.0f}}; // week 5
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//! [9]
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// Add labels
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//! [10]
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m_graph->rowAxis()->setTitle("Week of year");
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m_graph->columnAxis()->setTitle("Day of week");
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m_graph->valueAxis()->setTitle("Hours spent on the Internet");
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m_graph->valueAxis()->setLabelFormat("%.1f h");
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//! [10]
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//! [11]
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m_tableWidget->setRowCount(5);
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m_tableWidget->setColumnCount(7);
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m_tableWidget->setHorizontalHeaderLabels(days);
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m_tableWidget->setVerticalHeaderLabels(weeks);
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m_tableWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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m_tableWidget->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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m_tableWidget->setCurrentCell(-1, -1);
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//! [11]
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//! [12]
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for (int week = 0; week < weeks.size(); week++) {
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for (int day = 0; day < days.size(); day++) {
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QModelIndex index = m_tableWidget->model()->index(week, day);
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m_tableWidget->model()->setData(index, hours[week][day]);
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}
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}
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//! [12]
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}
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void GraphDataGenerator::addRow()
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{
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m_tableWidget->model()->insertRow(0);
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if (m_tableWidget->model()->rowCount() > m_rowCount)
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m_tableWidget->model()->removeRow(m_rowCount);
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for (int i = 0; i < m_columnCount; i++) {
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QModelIndex index = m_tableWidget->model()->index(0, i);
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m_tableWidget->model()->setData(index,
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((float)i / (float)m_columnCount) / 2.0f + (float)(rand() % 30) / 100.0f);
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}
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m_tableWidget->resizeColumnsToContents();
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}
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//! [13]
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void GraphDataGenerator::selectFromTable(const QPoint &selection)
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{
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m_tableWidget->setFocus();
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m_tableWidget->setCurrentCell(selection.x(), selection.y());
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}
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//! [13]
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//! [14]
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void GraphDataGenerator::selectedFromTable(int currentRow, int currentColumn,
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int previousRow, int previousColumn)
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{
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Q_UNUSED(previousRow)
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Q_UNUSED(previousColumn)
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m_graph->seriesList().at(0)->setSelectedBar(QPoint(currentRow, currentColumn));
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}
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//! [14]
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void GraphDataGenerator::fixTableSize()
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{
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int width = m_tableWidget->horizontalHeader()->length();
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width += m_tableWidget->verticalHeader()->width();
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m_tableWidget->setFixedWidth(width + 2);
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int height = m_tableWidget->verticalHeader()->length();
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height += m_tableWidget->horizontalHeader()->height();
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m_tableWidget->setFixedHeight(height + 2);
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}
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int main(int argc, char **argv)
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{
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//! [0]
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QApplication app(argc, argv);
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Q3DBars *graph = new Q3DBars();
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QWidget *container = QWidget::createWindowContainer(graph);
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//! [0]
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QSize screenSize = graph->screen()->size();
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container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 2));
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container->setMaximumSize(screenSize);
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container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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container->setFocusPolicy(Qt::StrongFocus);
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//! [1]
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QWidget widget;
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QVBoxLayout *layout = new QVBoxLayout(&widget);
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QTableWidget *tableWidget = new QTableWidget(&widget);
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layout->addWidget(container, 1);
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layout->addWidget(tableWidget, 1, Qt::AlignHCenter);
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//! [1]
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tableWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
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tableWidget->setAlternatingRowColors(true);
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widget.setWindowTitle(QStringLiteral("Hours spent on the Internet"));
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//! [2]
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// Since we are dealing with QTableWidget, the model will already have data sorted properly
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// into rows and columns, so we simply set useModelCategories property to true to utilize this.
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QItemModelBarDataProxy *proxy = new QItemModelBarDataProxy(tableWidget->model());
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proxy->setUseModelCategories(true);
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QBar3DSeries *series = new QBar3DSeries(proxy);
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series->setMesh(QAbstract3DSeries::MeshPyramid);
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graph->addSeries(series);
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//! [2]
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//! [3]
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GraphDataGenerator generator(graph, tableWidget);
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QObject::connect(series, &QBar3DSeries::selectedBarChanged, &generator,
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&GraphDataGenerator::selectFromTable);
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QObject::connect(tableWidget, &QTableWidget::currentCellChanged, &generator,
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&GraphDataGenerator::selectedFromTable);
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//! [3]
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//! [4]
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widget.show();
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generator.start();
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return app.exec();
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//! [4]
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}
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