125 lines
4.5 KiB
C
125 lines
4.5 KiB
C
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/*=========================================================================
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Program: Visualization Toolkit
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Module: QVTKTableModelAdapter.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class QVTKTableModelAdapter
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* @brief An adapter to create a vtkTable from an QAbstractItemModel.
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*
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* An internal table is used to buffer the QAbstractItemModel. Any changes in the model are applied
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* to the internal table, so that it is always up-to-date with the model.
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*
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* Due to the structure of vtkTable it is not possible to have columns with different variable
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* types. The variable type of a column is determined from the first row in the model.
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*
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* The data is queried using QAbstractItemModel::data() using Qt::DisplayRole.
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*
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* All columns of the table must have unique names. They are queried using
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* QAbstractItemModel::headerData() using Qt::Horizontal as orientation and Qt::DisplayRole.
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*
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*/
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#ifndef QVTKTableModelAdapter_h
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#define QVTKTableModelAdapter_h
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#include "vtkGUISupportQtModule.h" // For export macro
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#include <QAbstractItemModel>
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#include <QObject>
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#include <QPointer>
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#include "vtkNew.h" // For vtkNew
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#include "vtkTable.h" // For vtkTable
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class VTKGUISUPPORTQT_EXPORT QVTKTableModelAdapter : public QObject
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{
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Q_OBJECT
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public:
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QVTKTableModelAdapter(QObject* parent = nullptr);
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QVTKTableModelAdapter(QAbstractItemModel* model, QObject* parent = nullptr);
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///@{
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/**
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* Get/set the Qt table model. It is expected that the QAbstractItemModel passed in is a
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* QAbstractTableModel subclass; however allowing this class to work with a QAbstractItemModel is
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* advantageous since it enables usage of proxy models, for example for sorting and filtering.
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*/
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virtual void SetItemModel(QAbstractItemModel* model);
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QAbstractItemModel* GetItemModel() const;
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///@}
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/**
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* Access to the vtkTable. Treat this as a const object, i.e. you should not modify it
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* outside of this class.
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*/
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vtkTable* GetTable() const;
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Q_SIGNALS:
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/**
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* Signal emitted when the internal vtkTable has changed. This signal can be used to connect to a
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* slot which handles rendering of an attached chart.
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*/
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void tableChanged();
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protected:
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/**
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* The default method for retrieving data for a tabel entry from the item model.
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*/
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virtual QVariant modelData(int row, int col);
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/**
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* Return a suitable vtk array for the QVariant type.
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* Note to call Delete() on the returned array where necessary, see vtkObjectBase::Delete() for
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* details.
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*/
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virtual vtkAbstractArray* NewArray(const QVariant& type);
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/**
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* Check that the correct array types are set for the columns.
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*/
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virtual bool HasCorrectColumnArrays();
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/**
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* Sets the value of the cell given by row, column using the adequate QVariant type conversion.
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*/
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virtual void SetCellValue(int row, int column, const QVariant& data);
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/**
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* Update the internal table from row0 to inclusive row1, and from column0 to inclusive column1
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* so it reflects the data in the model.
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*/
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virtual void UpdateTable(int row0, int column0, int row1, int column1);
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QPointer<QAbstractItemModel> ItemModel;
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vtkNew<vtkTable> Table;
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protected Q_SLOTS:
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virtual void onModified();
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virtual void onModelReset();
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virtual void onDataChanged(
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const QModelIndex& topLeft, const QModelIndex& bottomRight, const QVector<int>& roles);
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virtual void onHeaderDataChanged(Qt::Orientation orientation, int first, int last);
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virtual void onLayoutChanged(
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const QList<QPersistentModelIndex>& parents, QAbstractItemModel::LayoutChangeHint hint);
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virtual void onRowsInserted(const QModelIndex& parent, int first, int last);
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virtual void onRowsRemoved(const QModelIndex& parent, int first, int last);
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virtual void onRowsMoved(
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const QModelIndex& parent, int start, int end, const QModelIndex& destination, int row);
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virtual void onColumnsInserted(const QModelIndex& parent, int first, int last);
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virtual void onColumnsRemoved(const QModelIndex& parent, int first, int last);
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virtual void onColumnsMoved(
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const QModelIndex& parent, int start, int end, const QModelIndex& destination, int column);
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};
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#endif
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