| 1 | /* |
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| 2 | * This file is part of KQuickCharts |
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| 3 | * SPDX-FileCopyrightText: 2019 Marco Martin <mart@kde.org> |
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| 4 | * SPDX-FileCopyrightText: 2019 David Edmundson <davidedmundson@kde.org> |
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| 5 | * SPDX-FileCopyrightText: 2019 Arjen Hiemstra <ahiemstra@heimr.nl> |
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| 6 | * |
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| 7 | * SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL |
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| 8 | */ |
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| 9 | |
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| 10 | #ifndef COLORGRADIENTSOURCE_H |
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| 11 | #define COLORGRADIENTSOURCE_H |
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| 12 | |
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| 13 | #include <QColor> |
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| 14 | #include <QList> |
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| 15 | |
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| 16 | #include "ChartDataSource.h" |
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| 17 | |
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| 18 | /** |
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| 19 | * A data source that provides a hue-shifted color as data. |
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| 20 | */ |
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| 21 | class QUICKCHARTS_EXPORT ColorGradientSource : public ChartDataSource |
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| 22 | { |
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| 23 | Q_OBJECT |
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| 24 | QML_ELEMENT |
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| 25 | |
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| 26 | public: |
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| 27 | explicit ColorGradientSource(QObject *parent = nullptr); |
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| 28 | |
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| 29 | Q_PROPERTY(QColor baseColor READ baseColor WRITE setBaseColor NOTIFY baseColorChanged) |
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| 30 | QColor baseColor() const; |
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| 31 | void setBaseColor(const QColor &newBaseColor); |
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| 32 | Q_SIGNAL void baseColorChanged(); |
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| 33 | |
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| 34 | Q_PROPERTY(int itemCount READ itemCount WRITE setItemCount NOTIFY itemCountChanged) |
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| 35 | void setItemCount(int newItemCount); |
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| 36 | Q_SIGNAL void itemCountChanged(); |
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| 37 | |
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| 38 | Q_PROPERTY(QVariantList colors READ colors NOTIFY dataChanged) |
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| 39 | QVariantList colors() const; |
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| 40 | |
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| 41 | int itemCount() const override; |
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| 42 | QVariant item(int index) const override; |
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| 43 | QVariant minimum() const override; |
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| 44 | QVariant maximum() const override; |
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| 45 | |
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| 46 | private: |
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| 47 | void regenerateColors(); |
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| 48 | |
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| 49 | QColor m_baseColor = Qt::blue; |
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| 50 | int m_itemCount = 0; |
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| 51 | QList<QColor> m_colors; |
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| 52 | }; |
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| 53 | |
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| 54 | #endif // COLORGRADIENTSOURCE_H |
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| 55 | |
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