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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 | |
40 | using namespace QtDataVisualization; |
41 | |
42 | //! [0] |
43 | class VariantBarDataProxy : public QBarDataProxy |
44 | //! [0] |
45 | { |
46 | Q_OBJECT |
47 | |
48 | public: |
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 | |
65 | public Q_SLOTS: |
66 | void handleItemsAdded(int index, int count); |
67 | void handleDataCleared(); |
68 | void handleMappingChanged(); |
69 | |
70 | private: |
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 | |