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#include "mainwidget.h"
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#include "dataseriedialog.h"
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#include "qchartseries.h"
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#include "qpieseries.h"
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#include <qxychartseries.h>
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#include <barchartseries.h>
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#include <QPushButton>
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#include <QComboBox>
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#include <QSpinBox>
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#include <QCheckBox>
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#include <QGridLayout>
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#include <QHBoxLayout>
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#include <QLabel>
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#include <QSpacerItem>
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#include <QMessageBox>
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#include <cmath>
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#include <QDebug>
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#include <QStandardItemModel>
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QTCOMMERCIALCHART_USE_NAMESPACE
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MainWidget::MainWidget(QWidget *parent) :
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QWidget(parent)
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{
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m_chartWidget = new QChartWidget(this);
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// Grid layout for the controls for configuring the chart widget
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QGridLayout *grid = new QGridLayout();
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QPushButton *addSeriesButton = new QPushButton("Add series");
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connect(addSeriesButton, SIGNAL(clicked()), this, SLOT(addSeries()));
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grid->addWidget(addSeriesButton, 0, 1);
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initBackroundCombo(grid);
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initScaleControls(grid);
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initThemeCombo(grid);
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QCheckBox *zoomCheckBox = new QCheckBox("Drag'n drop Zoom");
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connect(zoomCheckBox, SIGNAL(toggled(bool)), m_chartWidget, SLOT(setZoomEnabled(bool)));
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zoomCheckBox->setChecked(true);
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grid->addWidget(zoomCheckBox, grid->rowCount(), 0);
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// add row with empty label to make all the other rows static
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grid->addWidget(new QLabel(""), grid->rowCount(), 0);
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grid->setRowStretch(grid->rowCount() - 1, 1);
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// Another grid layout as a main layout
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QGridLayout *mainLayout = new QGridLayout();
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mainLayout->addLayout(grid, 0, 0);
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// Init series type specific controls
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initPieControls();
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mainLayout->addLayout(m_pieLayout, 2, 0);
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// Scatter series specific settings
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// m_scatterLayout = new QGridLayout();
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// m_scatterLayout->addWidget(new QLabel("scatter"), 0, 0);
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// m_scatterLayout->setEnabled(false);
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// mainLayout->addLayout(m_scatterLayout, 1, 0);
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// Add layouts and the chart widget to the main layout
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mainLayout->addWidget(m_chartWidget, 0, 1, 3, 1);
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setLayout(mainLayout);
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// force an update to test data
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testDataChanged(0);
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}
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// Combo box for selecting the chart's background
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void MainWidget::initBackroundCombo(QGridLayout *grid)
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{
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QComboBox *backgroundCombo = new QComboBox(this);
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backgroundCombo->addItem("Color");
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backgroundCombo->addItem("Gradient");
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backgroundCombo->addItem("Image");
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connect(backgroundCombo, SIGNAL(currentIndexChanged(int)),
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this, SLOT(backgroundChanged(int)));
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grid->addWidget(new QLabel("Background:"), grid->rowCount(), 0);
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grid->addWidget(backgroundCombo, grid->rowCount() - 1, 1);
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}
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// Scale related controls (auto-scale vs. manual min-max values)
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void MainWidget::initScaleControls(QGridLayout *grid)
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{
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m_autoScaleCheck = new QCheckBox("Automatic scaling");
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connect(m_autoScaleCheck, SIGNAL(stateChanged(int)), this, SLOT(autoScaleChanged(int)));
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// Allow setting also non-sense values (like -2147483648 and 2147483647)
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m_xMinSpin = new QSpinBox();
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m_xMinSpin->setMinimum(INT_MIN);
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m_xMinSpin->setMaximum(INT_MAX);
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m_xMinSpin->setValue(0);
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connect(m_xMinSpin, SIGNAL(valueChanged(int)), this, SLOT(xMinChanged(int)));
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m_xMaxSpin = new QSpinBox();
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m_xMaxSpin->setMinimum(INT_MIN);
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m_xMaxSpin->setMaximum(INT_MAX);
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m_xMaxSpin->setValue(10);
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connect(m_xMaxSpin, SIGNAL(valueChanged(int)), this, SLOT(xMaxChanged(int)));
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m_yMinSpin = new QSpinBox();
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m_yMinSpin->setMinimum(INT_MIN);
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m_yMinSpin->setMaximum(INT_MAX);
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m_yMinSpin->setValue(0);
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connect(m_yMinSpin, SIGNAL(valueChanged(int)), this, SLOT(yMinChanged(int)));
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m_yMaxSpin = new QSpinBox();
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m_yMaxSpin->setMinimum(INT_MIN);
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m_yMaxSpin->setMaximum(INT_MAX);
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m_yMaxSpin->setValue(10);
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connect(m_yMaxSpin, SIGNAL(valueChanged(int)), this, SLOT(yMaxChanged(int)));
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grid->addWidget(m_autoScaleCheck, grid->rowCount(), 0);
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grid->addWidget(new QLabel("x min:"), grid->rowCount(), 0);
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grid->addWidget(m_xMinSpin, grid->rowCount() - 1, 1);
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grid->addWidget(new QLabel("x max:"), grid->rowCount(), 0);
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grid->addWidget(m_xMaxSpin, grid->rowCount() - 1, 1);
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grid->addWidget(new QLabel("y min:"), grid->rowCount(), 0);
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grid->addWidget(m_yMinSpin, grid->rowCount() - 1, 1);
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grid->addWidget(new QLabel("y max:"), grid->rowCount(), 0);
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grid->addWidget(m_yMaxSpin, grid->rowCount() - 1, 1);
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m_autoScaleCheck->setChecked(true);
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}
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// Combo box for selecting theme
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void MainWidget::initThemeCombo(QGridLayout *grid)
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{
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QComboBox *chartTheme = new QComboBox();
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chartTheme->addItem("Default");
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chartTheme->addItem("Vanilla");
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chartTheme->addItem("Icy");
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chartTheme->addItem("Grayscale");
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chartTheme->addItem("Scientific");
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chartTheme->addItem("Unnamed1");
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connect(chartTheme, SIGNAL(currentIndexChanged(int)),
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this, SLOT(changeChartTheme(int)));
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grid->addWidget(new QLabel("Chart theme:"), 8, 0);
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grid->addWidget(chartTheme, 8, 1);
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}
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void MainWidget::initPieControls()
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{
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// Pie series specific settings
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// Pie size factory
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QDoubleSpinBox *pieSizeSpin = new QDoubleSpinBox();
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pieSizeSpin->setMinimum(LONG_MIN);
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pieSizeSpin->setMaximum(LONG_MAX);
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pieSizeSpin->setValue(1.0);
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pieSizeSpin->setSingleStep(0.1);
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connect(pieSizeSpin, SIGNAL(valueChanged(double)), this, SLOT(setPieSizeFactor(double)));
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// Pie position
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QComboBox *piePosCombo = new QComboBox(this);
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piePosCombo->addItem("Maximized");
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piePosCombo->addItem("Top left");
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piePosCombo->addItem("Top right");
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piePosCombo->addItem("Bottom left");
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piePosCombo->addItem("Bottom right");
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connect(piePosCombo, SIGNAL(currentIndexChanged(int)),
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this, SLOT(setPiePosition(int)));
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m_pieLayout = new QGridLayout();
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m_pieLayout->setEnabled(false);
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m_pieLayout->addWidget(new QLabel("Pie size factor"), 0, 0);
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m_pieLayout->addWidget(pieSizeSpin, 0, 1);
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m_pieLayout->addWidget(new QLabel("Pie position"), 1, 0);
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m_pieLayout->addWidget(piePosCombo, 1, 1);
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}
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void MainWidget::addSeries()
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{
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DataSerieDialog dialog(m_defaultSeriesName, this);
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connect(&dialog, SIGNAL(accepted(QString, QString)), this, SLOT(addSeries(QString, QString)));
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dialog.exec();
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}
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void MainWidget::addSeries(QString series, QString data)
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{
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qDebug() << "addSeries: " << series << " data: " << data;
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m_defaultSeriesName = series;
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// TODO: a dedicated data class for storing x and y values
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QList<qreal> x;
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QList<qreal> y;
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if (data == "linear") {
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for (int i = 0; i < 20; i++) {
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x.append(i);
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y.append(i);
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}
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} else if (data == "linear, 1M") {
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// 1 million data points from 0.0001 to 100
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// TODO: What is the requirement? Should we be able to show this kind of data with
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// reasonable performance, or can we expect the application developer to do "data mining"
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// for us, so that the count of data points given to QtCommercial Chart is always
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// reasonable?
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for (qreal i = 0; i < 100; i += 0.0001) {
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x.append(i);
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y.append(20);
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}
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} else if (data == "SIN") {
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for (int i = 0; i < 100; i++) {
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x.append(i);
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y.append(abs(sin(3.14159265358979 / 50 * i) * 100));
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}
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} else if (data == "SIN + random") {
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for (qreal i = 0; i < 100; i += 0.1) {
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x.append(i + (rand() % 5));
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y.append(abs(sin(3.14159265358979 / 50 * i) * 100) + (rand() % 5));
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}
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} else {
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// TODO: check if data has a valid file name
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Q_ASSERT(false);
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}
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// TODO: color of the series
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QChartSeries *newSeries = 0;
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if (series == "Scatter") {
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newSeries = m_chartWidget->createSeries(QChartSeries::SeriesTypeScatter);
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Q_ASSERT(newSeries->setData(x, y));
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} else if (series == "Pie") {
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newSeries = m_chartWidget->createSeries(QChartSeries::SeriesTypePie);
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Q_ASSERT(newSeries->setData(y));
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} else if (series == "Line") {
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// TODO: adding data to an existing line series does not give any visuals for some reason
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// newSeries = m_chartWidget->createSeries(QChartSeries::SeriesTypeLine);
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// QXYChartSeries *lineSeries = static_cast<QXYChartSeries *>(newSeries);
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// lineSeries->setColor(Qt::blue);
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// for (int i(0); i < x.count() && i < y.count(); i++) {
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// lineSeries->add(x.at(i), y.at(i));
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// }
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//Q_ASSERT(newSeries->setData(x, y));
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QXYChartSeries* series0 = QXYChartSeries::create();
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for (int i(0); i < x.count() && i < y.count(); i++)
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series0->add(x.at(i), y.at(i));
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m_chartWidget->addSeries(series0);
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newSeries = series0;
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} else {
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// TODO
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}
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// BarChart
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if (series == "Bar") {
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// This is the another way of creating series. Should we create test cases for both ways, if we support them?
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qDebug() << "Bar chart series";
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newSeries = QChartSeries::create(QChartSeries::SeriesTypeBar, this);
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// Create some test data to chart
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QStandardItemModel dataModel(2,10,this);
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QModelIndex index;
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index = dataModel.index(0,0);
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// Series 1, items 6 to 9 missing.
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dataModel.setData(dataModel.index(0,0),1);
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dataModel.setData(dataModel.index(0,1),12);
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dataModel.setData(dataModel.index(0,2),5);
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dataModel.setData(dataModel.index(0,3),8);
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dataModel.setData(dataModel.index(0,4),17);
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dataModel.setData(dataModel.index(0,5),9);
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// Series 2, some other items missing
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dataModel.setData(dataModel.index(1,0),5);
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dataModel.setData(dataModel.index(1,3),4);
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dataModel.setData(dataModel.index(1,5),7);
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dataModel.setData(dataModel.index(1,6),8);
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dataModel.setData(dataModel.index(1,8),9);
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dataModel.setData(dataModel.index(1,9),9);
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newSeries->setData(&dataModel);
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m_chartWidget->addSeries(newSeries);
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}
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setCurrentSeries(newSeries);
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}
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void MainWidget::setCurrentSeries(QChartSeries *series)
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{
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m_currentSeries = series;
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switch (m_currentSeries->type()) {
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case QChartSeries::SeriesTypeLine:
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break;
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case QChartSeries::SeriesTypeScatter:
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break;
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case QChartSeries::SeriesTypePie:
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break;
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case QChartSeries::SeriesTypeBar:
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qDebug() << "setCurrentSeries (bar)";
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break;
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default:
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Q_ASSERT(false);
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break;
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}
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}
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void MainWidget::testDataChanged(int itemIndex)
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{
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qDebug() << "testDataChanged: " << itemIndex;
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// switch (itemIndex) {
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// case 0: {
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// QList<QChartDataPoint> data;
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// for (int x = 0; x < 20; x++) {
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// data.append(QChartDataPoint() << x << x / 2);
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// }
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// m_chartWidget->setData(data);
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// break;
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// }
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// case 1: {
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// QList<QChartDataPoint> data;
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// for (int x = 0; x < 100; x++) {
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// data.append(QChartDataPoint() << x - 200 << 2 * (uint(sin(3.14159/50*x)*80) % 100));
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// }
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// m_chartWidget->setData(data);
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// break;
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// }
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// case 2: {
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// QList<QChartDataPoint> data;
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// for (int x = 0; x < 1000; x++) {
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// data.append(QChartDataPoint() << x - 200 << 2 * (uint(sin(3.14159/50*x)*80) % 100) + (rand() % 100 * 0.2));
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// data.append(QChartDataPoint() << x - 200 << 2 * (uint(sin(3.14159/50*x)*80) % 100) + (rand() % 100 * 0.2));
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// data.append(QChartDataPoint() << x - 200 << 2 * (uint(sin(3.14159/50*x)*80) % 100) + (rand() % 100 * 0.2));
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// }
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// m_chartWidget->setData(data);
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// break;
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// }
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// default:
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// break;
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// }
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}
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void MainWidget::backgroundChanged(int itemIndex)
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{
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qDebug() << "backgroundChanged: " << itemIndex;
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}
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void MainWidget::autoScaleChanged(int value)
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{
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if (value) {
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// TODO: enable auto scaling
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} else {
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// TODO: set scaling manually (and disable auto scaling)
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}
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m_xMinSpin->setEnabled(!value);
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m_xMaxSpin->setEnabled(!value);
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m_yMinSpin->setEnabled(!value);
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m_yMaxSpin->setEnabled(!value);
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}
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void MainWidget::xMinChanged(int value)
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{
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qDebug() << "xMinChanged: " << value;
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}
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void MainWidget::xMaxChanged(int value)
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{
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qDebug() << "xMaxChanged: " << value;
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}
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void MainWidget::yMinChanged(int value)
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{
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qDebug() << "yMinChanged: " << value;
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}
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void MainWidget::yMaxChanged(int value)
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{
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qDebug() << "yMaxChanged: " << value;
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}
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void MainWidget::changeChartTheme(int themeIndex)
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{
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qDebug() << "changeChartTheme: " << themeIndex;
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m_chartWidget->setTheme((QChart::ChartThemeId) themeIndex);
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}
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void MainWidget::setPieSizeFactor(double size)
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{
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QPieSeries *pie = qobject_cast<QPieSeries *>(m_currentSeries);
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if (pie)
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pie->setSizeFactor(qreal(size));
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}
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void MainWidget::setPiePosition(int position)
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{
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QPieSeries *pie = qobject_cast<QPieSeries *>(m_currentSeries);
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if (pie)
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pie->setPosition((QPieSeries::PiePosition) position);
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}
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