| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Data Visualization module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
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| ****************************************************************************/ |
| |
| #ifndef VARIANTBARDATAPROXY_H |
| #define VARIANTBARDATAPROXY_H |
| |
| #include "qbardataproxy.h" |
| #include "variantdataset.h" |
| #include "variantbardatamapping.h" |
| #include <QtCore/QStringList> |
| #include <QtCore/QMap> |
| #include <QtCore/QPointer> |
| |
| using namespace QtDataVisualization; |
| |
| //! [0] |
| class VariantBarDataProxy : public QBarDataProxy |
| //! [0] |
| { |
| Q_OBJECT |
| |
| public: |
| explicit VariantBarDataProxy(); |
| explicit VariantBarDataProxy(VariantDataSet *newSet, VariantBarDataMapping *mapping); |
| virtual ~VariantBarDataProxy(); |
| |
| //! [1] |
| // Doesn't gain ownership of the dataset, but does connect to it to listen for data changes. |
| void setDataSet(VariantDataSet *newSet); |
| VariantDataSet *dataSet(); |
| |
| // Map key (row, column, value) to value index in data item (VariantItem). |
| // Doesn't gain ownership of mapping, but does connect to it to listen for mapping changes. |
| // Modifying mapping that is set to proxy will trigger dataset re-resolving. |
| void setMapping(VariantBarDataMapping *mapping); |
| VariantBarDataMapping *mapping(); |
| //! [1] |
| |
| public Q_SLOTS: |
| void handleItemsAdded(int index, int count); |
| void handleDataCleared(); |
| void handleMappingChanged(); |
| |
| private: |
| void resolveDataSet(); |
| |
| QPointer<VariantDataSet> m_dataSet; |
| QPointer<VariantBarDataMapping> m_mapping; |
| |
| Q_DISABLE_COPY(VariantBarDataProxy) |
| }; |
| |
| #endif |