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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 "qscatterseries.h"
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#include <qlinechartseries.h>
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#include <qbarset.h>
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#include <qbarcategory.h>
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#include <qbarchartseries.h>
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#include <qstackedbarchartseries.h>
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#include <qpercentbarchartseries.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 QChartView(this);
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m_chartWidget->setRubberBandPolicy(QChartView::HorizonalRubberBand);
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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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}
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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, int, int, QString, bool)),
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this, SLOT(addSeries(QString, int, int, QString, bool)));
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dialog.exec();
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}
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QList<RealList> MainWidget::generateTestData(int columnCount, int rowCount, QString dataCharacteristics)
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{
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// TODO: dataCharacteristics
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QList<RealList> testData;
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for (int j(0); j < columnCount; j++) {
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QList <qreal> newColumn;
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for (int i(0); i < rowCount; i++) {
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if (dataCharacteristics == "Sin") {
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newColumn.append(abs(sin(3.14159265358979 / 50 * i) * 100));
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} else if (dataCharacteristics == "Sin + random") {
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newColumn.append(abs(sin(3.14159265358979 / 50 * i) * 100) + (rand() % 5));
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} else if (dataCharacteristics == "Random") {
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newColumn.append(rand() % 5);
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} else if (dataCharacteristics == "Linear") {
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//newColumn.append(i * (j + 1.0));
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// TODO: temporary hack to make pie work; prevent zero values:
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newColumn.append(i * (j + 1.0) + 0.1);
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} else { // "constant"
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newColumn.append((j + 1.0));
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}
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}
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testData.append(newColumn);
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}
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return testData;
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}
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QStringList MainWidget::generateLabels(int count)
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{
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QStringList result;
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for (int i(0); i < count; i++)
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result.append("label" + QString::number(i));
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return result;
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}
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void MainWidget::addSeries(QString seriesName, int columnCount, int rowCount, QString dataCharacteristics, bool labelsEnabled)
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{
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qDebug() << "addSeries: " << seriesName
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<< " columnCount: " << columnCount
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<< " rowCount: " << rowCount
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<< " dataCharacteristics: " << dataCharacteristics
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<< " labels enabled: " << labelsEnabled;
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m_defaultSeriesName = seriesName;
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QList<RealList> data = generateTestData(columnCount, rowCount, dataCharacteristics);
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// Line series and scatter series use similar data
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if (seriesName.contains("line", Qt::CaseInsensitive)) {
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for (int j(0); j < data.count(); j ++) {
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QList<qreal> column = data.at(j);
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QLineChartSeries *series = new QLineChartSeries();
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for (int i(0); i < column.count(); i++) {
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series->add(i, column.at(i));
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}
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m_chartWidget->addSeries(series);
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setCurrentSeries(series);
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}
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} else if (seriesName.contains("scatter", Qt::CaseInsensitive)) {
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for (int j(0); j < data.count(); j++) {
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QList<qreal> column = data.at(j);
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QScatterSeries *series = new QScatterSeries();
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for (int i(0); i < column.count(); i++) {
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(*series) << QPointF(i, column.at(i));
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}
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m_chartWidget->addSeries(series);
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setCurrentSeries(series);
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}
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} else if (seriesName.contains("pie", Qt::CaseInsensitive)) {
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QStringList labels = generateLabels(rowCount);
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for (int j(0); j < data.count(); j++) {
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QPieSeries *series = new QPieSeries();
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QList<qreal> column = data.at(j);
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for (int i(0); i < column.count(); i++) {
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series->add(column.at(i), labels.at(i));
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}
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m_chartWidget->addSeries(series);
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setCurrentSeries(series);
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}
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} else if (seriesName == "Bar"
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|| seriesName == "Stacked bar"
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|| seriesName == "Percent bar") {
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// TODO: replace QBarCategory with QStringList?
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QBarCategory *category = new QBarCategory;
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QStringList labels = generateLabels(rowCount);
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foreach(QString label, labels)
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*category << label;
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QBarChartSeries* series = 0;
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if (seriesName == "Bar")
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series = new QBarChartSeries(category, this);
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else if (seriesName == "Stacked bar")
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series = new QStackedBarChartSeries(category, this);
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else
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series = new QPercentBarChartSeries(category, this);
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for (int j(0); j < data.count(); j++) {
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QList<qreal> column = data.at(j);
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QBarSet *set = new QBarSet("set" + QString::number(j));
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for (int i(0); i < column.count(); i++) {
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*set << column.at(i);
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}
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series->addBarSet(set);
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}
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m_chartWidget->addSeries(series);
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setCurrentSeries(series);
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}
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// TODO: spline and area
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}
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void MainWidget::setCurrentSeries(QChartSeries *series)
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{
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if (series) {
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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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case QChartSeries::SeriesTypeStackedBar:
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qDebug() << "setCurrentSeries (Stackedbar)";
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break;
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case QChartSeries::SeriesTypePercentBar:
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qDebug() << "setCurrentSeries (Percentbar)";
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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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}
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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->setChartTheme((QChart::ChartTheme) themeIndex);
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//TODO: remove this hack. This is just to make it so that theme change is seen immediately.
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QSize s = size();
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s.setWidth(s.width()+1);
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resize(s);
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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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