| 1 | /* |
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| 2 | * SPDX-FileCopyrightText: 2020 Arjen Hiemstra <ahiemstra@heimr.nl> |
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| 3 | * |
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| 4 | * SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL |
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| 5 | */ |
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| 6 | |
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| 7 | #pragma once |
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| 8 | |
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| 9 | #include "ChartDataSource.h" |
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| 10 | |
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| 11 | #include <QVariant> |
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| 12 | |
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| 13 | /** |
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| 14 | * A source that uses the values of another source to produce values from a map. |
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| 15 | * |
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| 16 | * This source reads values from another source, then uses those as an index to |
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| 17 | * a map of different values and returns the appropriate value from that map. |
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| 18 | * This source's itemCount matches that of the other source. |
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| 19 | * |
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| 20 | * @since 5.71 |
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| 21 | */ |
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| 22 | class QUICKCHARTS_EXPORT MapProxySource : public ChartDataSource |
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| 23 | { |
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| 24 | Q_OBJECT |
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| 25 | QML_ELEMENT |
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| 26 | |
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| 27 | public: |
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| 28 | MapProxySource(QObject *parent = nullptr); |
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| 29 | |
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| 30 | /** |
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| 31 | * A ChartDataSource that is used as map indexes. |
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| 32 | */ |
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| 33 | Q_PROPERTY(ChartDataSource *source READ source WRITE setSource NOTIFY sourceChanged) |
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| 34 | ChartDataSource *source() const; |
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| 35 | void setSource(ChartDataSource *newSource); |
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| 36 | Q_SIGNAL void sourceChanged(); |
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| 37 | |
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| 38 | /** |
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| 39 | * The map to index for values. |
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| 40 | */ |
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| 41 | Q_PROPERTY(QVariantMap map READ map WRITE setMap NOTIFY mapChanged) |
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| 42 | QVariantMap map() const; |
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| 43 | void setMap(const QVariantMap &newMap); |
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| 44 | Q_SIGNAL void mapChanged(); |
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| 45 | |
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| 46 | virtual int itemCount() const override; |
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| 47 | virtual QVariant item(int index) const override; |
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| 48 | virtual QVariant minimum() const override; |
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| 49 | virtual QVariant maximum() const override; |
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| 50 | |
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| 51 | private: |
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| 52 | ChartDataSource *m_source = nullptr; |
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| 53 | QVariantMap m_map; |
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| 54 | }; |
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| 55 | |
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