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Diffstat (limited to 'examples/charts/pointsselectionandmarkers/main.cpp')
| -rw-r--r-- | examples/charts/pointsselectionandmarkers/main.cpp | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/examples/charts/pointsselectionandmarkers/main.cpp b/examples/charts/pointsselectionandmarkers/main.cpp new file mode 100644 index 00000000..376d49f9 --- /dev/null +++ b/examples/charts/pointsselectionandmarkers/main.cpp @@ -0,0 +1,158 @@ +/**************************************************************************** +** +** Copyright (C) 2021 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt Charts module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:GPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 or (at your option) any later version +** approved by the KDE Free Qt Foundation. The licenses are as published by +** the Free Software Foundation and appearing in the file LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "utilities.h" + +#include <QApplication> +#include <QChart> +#include <QChartView> +#include <QCheckBox> +#include <QComboBox> +#include <QGridLayout> +#include <QHBoxLayout> +#include <QLabel> +#include <QMainWindow> +#include <QSplineSeries> + +int main(int argc, char *argv[]) +{ + QApplication a(argc, argv); + QMainWindow mainWindow; + mainWindow.setWindowTitle("Chart"); + + //![1] + constexpr qreal marker_size = 20.; + + QSplineSeries *series = new QSplineSeries(); + series->append({QPointF(0., 0.), + QPointF(0.5, 2.27), + QPointF(1.5, 2.2), + QPointF(3.3, 1.7), + QPointF(4.23, 3.1), + QPointF(5.3, 2.3), + QPointF(6.47, 4.1) + }); + series->setMarkerSize(marker_size); + series->setLightMarker(Utilities::redRectangle(marker_size)); + series->setSelectedLightMarker(Utilities::blueTriangle(marker_size)); + QObject::connect(series, &QXYSeries::clicked, series, [&](const QPointF &point) { + int index = series->points().indexOf(point); + if (index != -1) + series->toggleSelection({index}); + }); + //![1] + + //![2] + QChart *chart = new QChart(); + chart->addSeries(series); + chart->createDefaultAxes(); + chart->legend()->setVisible(false); + + QChartView *chartView = new QChartView(chart); + chartView->setRenderHint(QPainter::Antialiasing); + + QWidget *controlWidget = new QWidget(&mainWindow); + QGridLayout *controlLayout = new QGridLayout(controlWidget); + //![2] + + //![3] + QComboBox *charPointCombobox = new QComboBox(); + QComboBox *charPointSelectedCombobox = new QComboBox(); + QComboBox *lineColorCombobox = new QComboBox(); + QCheckBox *showUnselectedPointsCheckbox = new QCheckBox(); + //![3] + + //![4] + QLabel *charPoint = new QLabel(QCoreApplication::tr("Char point: ")); + charPointCombobox->addItems({QCoreApplication::tr("Red rectangle"), + QCoreApplication::tr("Green triangle"), + QCoreApplication::tr("Orange circle") + }); + QObject::connect(charPointCombobox, &QComboBox::currentIndexChanged, series, [&](const int index) { + if (showUnselectedPointsCheckbox->isChecked()) + series->setLightMarker(Utilities::getPointRepresentation(Utilities::PointType(index), marker_size)); + }); + //![4] + + //![5] + QLabel *charPointSelected = new QLabel(QCoreApplication::tr("Char point selected: ")); + charPointSelectedCombobox->addItems({QCoreApplication::tr("Blue triangle"), + QCoreApplication::tr("Yellow rectangle"), + QCoreApplication::tr("Lavender circle") + }); + QObject::connect(charPointSelectedCombobox, &QComboBox::currentIndexChanged, series, [&](const int index) { + series->setSelectedLightMarker(Utilities::getSelectedPointRepresentation(Utilities::SelectedPointType(index), marker_size)); + }); + + QLabel *lineColorLabel = new QLabel(QCoreApplication::tr("Line color: ")); + lineColorCombobox->addItems({QCoreApplication::tr("Blue"), + QCoreApplication::tr("Black"), + QCoreApplication::tr("Mint") + }); + QObject::connect(lineColorCombobox, &QComboBox::currentIndexChanged, series, [&](const int index) { + series->setColor(Utilities::makeLineColor(Utilities::LineColor(index))); + }); + //![5] + + //![6] + QLabel *showUnselectedPointsLabel = new QLabel(QCoreApplication::tr("Display unselected points: ")); + showUnselectedPointsCheckbox->setChecked(true); + QObject::connect(showUnselectedPointsCheckbox, &QCheckBox::stateChanged, series, [&](const int state) { + if (state) { + series->setLightMarker(Utilities::getPointRepresentation(Utilities::PointType(charPointCombobox->currentIndex()), marker_size)); + } else { + series->setLightMarker(QImage()); + } + }); + //![6] + + //![7] + controlLayout->addWidget(charPoint, 0, 0); + controlLayout->addWidget(charPointCombobox, 0, 1); + + controlLayout->addWidget(charPointSelected, 1, 0); + controlLayout->addWidget(charPointSelectedCombobox, 1, 1); + + controlLayout->addWidget(lineColorLabel, 2, 0); + controlLayout->addWidget(lineColorCombobox, 2, 1); + + controlLayout->addWidget(showUnselectedPointsLabel, 3, 0); + controlLayout->addWidget(showUnselectedPointsCheckbox, 3, 1, 1, 2); + + QWidget *mainWidget = new QWidget(&mainWindow); + QHBoxLayout *mainLayout = new QHBoxLayout(mainWidget); + mainLayout->addWidget(chartView); + mainLayout->addWidget(controlWidget); + + mainWindow.setCentralWidget(mainWidget); + mainWindow.resize(1080, 720); + mainWindow.show(); + return a.exec(); + //![7] +} |