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29
30#ifndef VARIANTBARDATAPROXY_H
31#define VARIANTBARDATAPROXY_H
32
33#include "qbardataproxy.h"
34#include "variantdataset.h"
35#include "variantbardatamapping.h"
36#include <QtCore/QStringList>
37#include <QtCore/QMap>
38#include <QtCore/QPointer>
39
40using namespace QtDataVisualization;
41
42//! [0]
43class VariantBarDataProxy : public QBarDataProxy
44//! [0]
45{
46 Q_OBJECT
47
48public:
49 explicit VariantBarDataProxy();
50 explicit VariantBarDataProxy(VariantDataSet *newSet, VariantBarDataMapping *mapping);
51 virtual ~VariantBarDataProxy();
52
53 //! [1]
54 // Doesn't gain ownership of the dataset, but does connect to it to listen for data changes.
55 void setDataSet(VariantDataSet *newSet);
56 VariantDataSet *dataSet();
57
58 // Map key (row, column, value) to value index in data item (VariantItem).
59 // Doesn't gain ownership of mapping, but does connect to it to listen for mapping changes.
60 // Modifying mapping that is set to proxy will trigger dataset re-resolving.
61 void setMapping(VariantBarDataMapping *mapping);
62 VariantBarDataMapping *mapping();
63 //! [1]
64
65public Q_SLOTS:
66 void handleItemsAdded(int index, int count);
67 void handleDataCleared();
68 void handleMappingChanged();
69
70private:
71 void resolveDataSet();
72
73 QPointer<VariantDataSet> m_dataSet;
74 QPointer<VariantBarDataMapping> m_mapping;
75
76 Q_DISABLE_COPY(VariantBarDataProxy)
77};
78
79#endif
80

source code of qtdatavis3d/examples/datavisualization/customproxy/variantbardataproxy.h