File indexing completed on 2024-05-05 03:57:14 

0001 /*
0002  * This file is part of KQuickCharts
0003  * SPDX-FileCopyrightText: 2019 Marco Martin <mart@kde.org>
0004  * SPDX-FileCopyrightText: 2019 David Edmundson <davidedmundson@kde.org>
0005  * SPDX-FileCopyrightText: 2019 Arjen Hiemstra <ahiemstra@heimr.nl>
0006  *
0007  * SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
0008  */
0009 
0010 #ifndef COLORGRADIENTSOURCE_H
0011 #define COLORGRADIENTSOURCE_H
0012 
0013 #include <QColor>
0014 #include <QList>
0015 
0016 #include "ChartDataSource.h"
0017 
0018 /**
0019  * A data source that provides a hue-shifted color as data.
0020  */
0021 class QUICKCHARTS_EXPORT ColorGradientSource : public ChartDataSource
0022 {
0023     Q_OBJECT
0024     QML_ELEMENT
0025 
0026 public:
0027     explicit ColorGradientSource(QObject *parent = nullptr);
0028 
0029     Q_PROPERTY(QColor baseColor READ baseColor WRITE setBaseColor NOTIFY baseColorChanged)
0030     QColor baseColor() const;
0031     void setBaseColor(const QColor &newBaseColor);
0032     Q_SIGNAL void baseColorChanged();
0033 
0034     Q_PROPERTY(int itemCount READ itemCount WRITE setItemCount NOTIFY itemCountChanged)
0035     void setItemCount(int newItemCount);
0036     Q_SIGNAL void itemCountChanged();
0037 
0038     Q_PROPERTY(QVariantList colors READ colors NOTIFY dataChanged)
0039     QVariantList colors() const;
0040 
0041     int itemCount() const override;
0042     QVariant item(int index) const override;
0043     QVariant minimum() const override;
0044     QVariant maximum() const override;
0045 
0046 private:
0047     void regenerateColors();
0048 
0049     QColor m_baseColor = Qt::blue;
0050     int m_itemCount = 0;
0051     QList<QColor> m_colors;
0052 };
0053 
0054 #endif // COLORGRADIENTSOURCE_H