LayerModel

Used for showing Layers in a table using the QAbstractItemModel interface. More...

Collaboration diagram for LayerModel:

Public Member Functions
	LayerModel (QTModelManager *manager)
	Constructs a LayerModel backed by the given model manager.
QVector< int >	cacheObject (UUID id)
	Updates the cached display data for the given layer and returns changed roles.
int	columnCount (const QModelIndex &parent=QModelIndex()) const override
	Returns the number of columns for the given parent.
QVariant	data (const QModelIndex &index, int role=Qt::DisplayRole) const override
	Returns the display data for the given index and role.
bool	hasChildren (const QModelIndex &parent=QModelIndex()) const override
	Returns whether the given parent has any children.
QModelIndex	index (int row, int column, const QModelIndex &parent=QModelIndex()) const override
	Returns the model index for the given row, column, and parent.
const Buffer< UUID > &	layers () const
	Returns the list of layer UUIDs managed by this model.
QTModelManager *	manager () const
	Returns the model manager backing this layer model.
QModelIndex	parent (const QModelIndex &child) const override
	Returns the parent index of the given child index.
int	rowCount (const QModelIndex &parent=QModelIndex()) const override
	Returns the number of rows under the given parent.
bool	setData (const QModelIndex &index, const QVariant &value, int role=Qt::EditRole) override
	Sets data for the given index and role.

Protected Member Functions
void	layerAddedSlot (Buffer< UUID > layer)
	Slot called when new layers are added to the scene.
void	layerUpdatedSlot (Buffer< UUID > objects)
	Slot called when existing layers are updated.
void	onClearAllSlot ()
	Slot called when all layers are cleared from the scene.

Protected Attributes
Dictionary< UUID, LayerCacheObject >	m_layer_cache
	Cached display data for each layer.
Buffer< UUID >	m_layers
	The list of layer UUIDs in this model.
QTModelManager *	m_manager
	The model manager providing layer data.

Detailed Description

Used for showing Layers in a table using the QAbstractItemModel interface.

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Definition at line 22 of file LayerCombo.h.

Constructor & Destructor Documentation

LayerModel()

LayerModel::LayerModel

(

QTModelManager *

manager

)

Constructs a LayerModel backed by the given model manager.

Parameters

[in]

manager

The model manager providing layer data.

References manager().

Member Function Documentation

cacheObject()

QVector< int > LayerModel::cacheObject

(

UUID

id

)

Updates the cached display data for the given layer and returns changed roles.

Parameters

[in]

id

The UUID of the layer to re-cache.

Returns

A vector of Qt item data roles that changed.

columnCount()

int LayerModel::columnCount ( const QModelIndex & parent = QModelIndex() ) const

override

Returns the number of columns for the given parent.

Parameters

[in]

parent

The parent model index.

Returns

The number of columns.

References parent().

data()

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

override

Returns the display data for the given index and role.

Parameters

[in]	index	The model index to query.
[in]	role	The Qt item data role.

Returns

The data as a QVariant.

References index().

hasChildren()

bool LayerModel::hasChildren ( const QModelIndex & parent = QModelIndex() ) const

override

Returns whether the given parent has any children.

Parameters

[in]

parent

The parent model index.

Returns

True if the parent has child rows.

References parent().

index()

QModelIndex LayerModel::index ( int row, int column, const QModelIndex & parent = QModelIndex() ) const

override

Returns the model index for the given row, column, and parent.

Parameters

[in]	row	The row index.
[in]	column	The column index.
[in]	parent	The parent model index.

Returns

The QModelIndex for the specified cell.

References parent().

Referenced by data(), and setData().

layerAddedSlot()

void LayerModel::layerAddedSlot ( Buffer< UUID > layer )

protected

Slot called when new layers are added to the scene.

Parameters

[in]

layer

The UUIDs of the newly added layers.

layers()

const Buffer< UUID > & LayerModel::layers ( ) const

inline

Returns the list of layer UUIDs managed by this model.

Returns

A reference to the buffer of layer UUIDs.

Definition at line 73 of file LayerCombo.h.

References m_layers.

layerUpdatedSlot()

void LayerModel::layerUpdatedSlot ( Buffer< UUID > objects )

protected

Slot called when existing layers are updated.

Parameters

[in]

objects

The UUIDs of the updated layers.

manager()

QTModelManager * LayerModel::manager ( ) const

inline

Returns the model manager backing this layer model.

Returns

A pointer to the QTModelManager.

Definition at line 85 of file LayerCombo.h.

References m_manager.

Referenced by LayerModel().

parent()

QModelIndex LayerModel::parent ( const QModelIndex & child ) const

override

Returns the parent index of the given child index.

Parameters

[in]

child

The child model index.

Returns

The parent QModelIndex.

Referenced by columnCount(), hasChildren(), index(), and rowCount().

rowCount()

int LayerModel::rowCount ( const QModelIndex & parent = QModelIndex() ) const

override

Returns the number of rows under the given parent.

Parameters

[in]

parent

The parent model index.

Returns

The number of child rows.

References parent().

setData()

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

override

Sets data for the given index and role.

Parameters

[in]	index	The model index to modify.
[in]	value	The new value to set.
[in]	role	The Qt item data role.

Returns

True if the data was successfully set.

References index().

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

• NDEVR/Headers/LayerCombo.h