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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "pointconfigurationwidget.h"
#include <QChart>
#include <QChartView>
#include <QCheckBox>
#include <QColor>
#include <QComboBox>
#include <QGraphicsLayout>
#include <QGridLayout>
#include <QHBoxLayout>
#include <QIcon>
#include <QLabel>
#include <QLineEdit>
#include <QLineSeries>
//![1]
PointConfigurationWidget::PointConfigurationWidget(QWidget *parent)
: ContentWidget(parent)
{
//![1]
//![2]
m_series = new QLineSeries;
m_series->setPointsVisible(true);
m_series->append({QPointF(0, 7), QPointF(2, 4),
QPointF(3, 5), QPointF(7, 4),
QPointF(10, 5), QPointF(11, 1),
QPointF(13, 3), QPointF(17, 6),
QPointF(18, 3), QPointF(20, 2)});
//![2]
//![3]
auto selectedPointIndexLabel = new QLabel(tr("Selected Point: "), this);
m_selectedPointIndexLineEdit = new QLineEdit(this);
m_selectedPointIndexLineEdit->setReadOnly(true);
auto colorLabel = new QLabel(tr("Color: "), this);
m_colorCombobox = new QComboBox(this);
QStringList colorStrings = {"red", "orange", "yellow", "green", "blue",
"indigo", "violet", "black"};
QStringList trColorStrings = {tr("red"), tr("orange"), tr("yellow"),
tr("green"), tr("blue"), tr("indigo"),
tr("violet"), tr("black")};
for (int i = 0; i < colorStrings.size(); i++)
m_colorCombobox->addItem(QIcon(), trColorStrings[i], QColor(colorStrings[i]));
auto sizeLabel = new QLabel(tr("Size: "), this);
m_sizeCombobox = new QComboBox(this);
for (auto size : { 2, 3, 4, 6, 8, 10, 12, 15 })
m_sizeCombobox->addItem(QIcon(), QString::number(size), size);
auto labelVisibilityLabel = new QLabel(tr("Label Visibility: "), this);
m_labelVisibilityCheckbox = new QCheckBox(this);
auto customLabelLabel = new QLabel(tr("Custom Label: "), this);
m_customLabelLineEdit = new QLineEdit(this);
//![3]
//![4]
QObject::connect(m_series, &QXYSeries::clicked, m_series, [&](const QPointF &point) {
int index = m_series->points().indexOf(point.toPoint());
if (index != -1) {
m_series->deselectAllPoints();
m_series->selectPoint(index);
m_selectedPointIndex = index;
m_selectedPointConfig = m_series->pointConfiguration(index);
const QPointF selectedPoint(m_series->at(index));
m_selectedPointIndexLineEdit->setText("(" + QString::number(selectedPoint.x()) + ", " +
QString::number(selectedPoint.y()) + ")");
PointConfigurations config = m_series->pointConfiguration(index);
QVariant colorVar = config[QXYSeries::PointConfiguration::Color];
QColor color = colorVar.isValid() ? colorVar.value<QColor>() : m_series->color();
if (m_colorCombobox->findData(color) < 0)
m_colorCombobox->addItem(color.name(), color);
m_colorCombobox->setCurrentIndex(m_colorCombobox->findData(color));
QVariant sizeVar = config[QXYSeries::PointConfiguration::Size];
qreal size = sizeVar.isValid() ? sizeVar.toReal() : m_series->markerSize();
if (m_sizeCombobox->findData(size) < 0)
m_sizeCombobox->addItem(QString::number(size), size);
m_sizeCombobox->setCurrentIndex(m_sizeCombobox->findData(size));
QVariant labelVisibilityVar = config[QXYSeries::PointConfiguration::LabelVisibility];
bool labelVisibility = labelVisibilityVar.isValid() ? labelVisibilityVar.toBool() :
m_series->pointLabelsVisible();
m_labelVisibilityCheckbox->setChecked(labelVisibility);
QVariant customLabelVar = config[QXYSeries::PointConfiguration::LabelFormat];
QString customLabel = customLabelVar.isValid() ? customLabelVar.toString() : "";
m_customLabelLineEdit->setText(customLabel);
}
});
//![4]
//![5]
QObject::connect(m_colorCombobox, &QComboBox::activated, m_series, [&](const int) {
m_selectedPointConfig[QXYSeries::PointConfiguration::Color] = m_colorCombobox->currentData();
m_series->setPointConfiguration(m_selectedPointIndex, m_selectedPointConfig);
});
QObject::connect(m_sizeCombobox, &QComboBox::activated, m_series, [&](const int) {
m_selectedPointConfig[QXYSeries::PointConfiguration::Size] = m_sizeCombobox->currentData();
m_series->setPointConfiguration(m_selectedPointIndex, m_selectedPointConfig);
});
QObject::connect(m_labelVisibilityCheckbox, &QAbstractButton::clicked, m_series, [&](const bool checked) {
m_selectedPointConfig[QXYSeries::PointConfiguration::LabelVisibility] = checked;
m_series->setPointConfiguration(m_selectedPointIndex, m_selectedPointConfig);
});
QObject::connect(m_customLabelLineEdit, &QLineEdit::editingFinished, m_series, [&]() {
m_selectedPointConfig[QXYSeries::PointConfiguration::LabelFormat] = m_customLabelLineEdit->text();
m_series->setPointConfiguration(m_selectedPointIndex, m_selectedPointConfig);
});
//![5]
//![6]
auto chart = new QChart;
chart->addSeries(m_series);
chart->createDefaultAxes();
chart->setTitle("Select points with mouse click");
chart->layout()->setContentsMargins(0, 0, 0, 0);
chart->legend()->setVisible(false);
m_selectInitialPointConnection = QObject::connect(chart, &QChart::geometryChanged, chart, [&]() {
m_series->selectPoint(4);
m_series->clicked(m_series->at(m_series->selectedPoints()[0]));
disconnect(m_selectInitialPointConnection);
});
auto chartView = new QChartView(chart, this);
chartView->setRenderHint(QPainter::Antialiasing);
auto controlWidget = new QWidget(this);
auto controlLayout = new QGridLayout(controlWidget);
controlLayout->setColumnStretch(1, 1);
controlLayout->addWidget(selectedPointIndexLabel, 0, 0);
controlLayout->addWidget(m_selectedPointIndexLineEdit, 0, 1);
controlLayout->addWidget(colorLabel, 1, 0);
controlLayout->addWidget(m_colorCombobox, 1, 1);
controlLayout->addWidget(sizeLabel, 2, 0);
controlLayout->addWidget(m_sizeCombobox, 2, 1);
controlLayout->addWidget(labelVisibilityLabel, 3, 0);
controlLayout->addWidget(m_labelVisibilityCheckbox, 3, 1, 1, 2);
controlLayout->addWidget(customLabelLabel, 4, 0);
controlLayout->addWidget(m_customLabelLineEdit, 4, 1);
auto mainLayout = new QHBoxLayout(this);
mainLayout->addWidget(chartView);
mainLayout->setStretch(0, 1);
mainLayout->addWidget(controlWidget);
//![6]
//![7]
}
//![7]