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Diffstat (limited to 'examples/datavisualization/graphgallery/variantbardataproxy.h')
-rw-r--r-- | examples/datavisualization/graphgallery/variantbardataproxy.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/examples/datavisualization/graphgallery/variantbardataproxy.h b/examples/datavisualization/graphgallery/variantbardataproxy.h new file mode 100644 index 00000000..6a4d2f31 --- /dev/null +++ b/examples/datavisualization/graphgallery/variantbardataproxy.h @@ -0,0 +1,48 @@ +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef VARIANTBARDATAPROXY_H +#define VARIANTBARDATAPROXY_H + +#include "variantdataset.h" +#include "variantbardatamapping.h" +#include <QtDataVisualization/qbardataproxy.h> +#include <QtCore/qpointer.h> + +//! [0] +class VariantBarDataProxy : public QBarDataProxy +//! [0] +{ + Q_OBJECT + +public: + VariantBarDataProxy(); + 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 |