Detailed Description

This class extends a DataItemModel with data visibility information from a DisplayWidgetMulti.

Instances of this class wrap a DataItemModel and add one additional column. The columns are added at the end on each rows and do not override any existing columns. The DataVisibleRole of a column represent if the data in a row is visible in the DisplayWidgetMulti or not. This is also represented by the Qt::CheckStateRole.

Note: While this behaves like a QAbstractProxyModel it cannot be implemented as one because QAbstractProxyModel is expected to have a 1:1 mapping to the source model. Appending a column at the end would work but adding it in the front breaks editing.

Public Types
enum	Roles { DataVisibleRole = Qt::UserRole + 100 , DataIsShowableRole = Qt::UserRole + 101 }

enum	Columns { COLUMN_DATA = 1 , COLUMN_VISIBLE = 0 }

Public Member Functions
	DataDisplayModel (DataItemModel sourceModel, DisplayWidgetMulti display, QObject *parent=0)

QModelIndex	mapToSource (const QModelIndex &proxyIndex) const
	Maps an index in the proxy model to the corresponding index in the source model.

QModelIndex	mapFromSource (const QModelIndex &sourceIndex) const
	Maps an index in the source model to the corresponding index in the proxy model.

int	columnCount (const QModelIndex &parent=QModelIndex()) const override
	Returns the column count of the source model plus the number of scenes.

int	rowCount (const QModelIndex &parent=QModelIndex()) const override
	Returns the row count of the source model.

QModelIndex	index (int row, int column, const QModelIndex &parent=QModelIndex()) const override
	Creates an index.

QModelIndex	index (const Data *data, int column) const

QModelIndex	parent (const QModelIndex &index) const override
	Returns the parent of index.

Qt::ItemFlags	flags (const QModelIndex &index=QModelIndex()) const override
	Returns Qt::ItemIsEnabled \| Qt::ItemIsSelectable \| Qt::ItemIsUserCheckable for all additional columns or the flags of the source model.

void	setSourceModel (DataItemModel *model)
	Sets the source model.

const DataItemModel *	sourceModel () const

DataItemModel *	sourceModel ()

QVariant	data (const QModelIndex &index, int role=Qt::DisplayRole) const override
	Returns true or false for DataVisibleRole for the additional columns.

bool	setData (const QModelIndex &index, const QVariant &value, int role=Qt::EditRole) override
	Adds or removes the Data from the Display if role is DataVisibleRole.

Protected Slots
void	onDataRowsRemoved (const QModelIndex &parent, int first, int last)
	Removes data from the Display before it is deleted.

void	onVisibleDataChanged (const DataList &before, const DataList &visible)
	Updates model state.

Member Enumeration Documentation

◆ Roles

enum Roles

Enumerator
DataVisibleRole	Flag whether the data is currently shown in any view.
DataIsShowableRole	Flag whether data can be shown in any view.

Member Function Documentation

◆ data()

QVariant data	(	const QModelIndex &	index,
		int	role = Qt::DisplayRole ) const

override

Returns true or false for DataVisibleRole for the additional columns.

The CheckStateRole of an additional column will returned Checked if the DataVisibleRole is true or false otherwise. All other columns are directed to the source model. The DataItemModel::DataRole for the additional columns will return the Data* represented by the row.

◆ setData()

bool setData	(	const QModelIndex &	index,
		const QVariant &	value,
		int	role = Qt::EditRole )

override

Adds or removes the Data from the Display if role is DataVisibleRole.

If value is true the Data is added to the Display, otherwise it's removed. The CheckStateRole will be redirected to the DataVisibleRole and the value changed to true if it was Qt::Checked or false for Qt::Unchecked.

The documentation for this class was generated from the following file:

ImFusion/GUI/DataDisplayModel.h

Detailed Description

Public Types

Public Member Functions

Protected Slots

Member Enumeration Documentation

◆ Roles

Member Function Documentation

◆ data()

◆ setData()