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Charts Package API Reference Guide

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IlvChartInteractorManager Class Reference

Manager class for IlvChartInteractor instances. More...

#include <ilviews/charts/chartint.h>

Inheritance diagram for IlvChartInteractorManager:
IlvNamedProperty

Public Member Functions

 IlvChartInteractorManager ()
 Constructor. More...
 
virtual ~IlvChartInteractorManager ()
 Destructor. More...
 
void addInteractor (IlvChartInteractor *interactor, IlUInt position=IlvLastPositionIndex)
 Adds an interactor to this object. More...
 
void addInteractor (const char *name, IlUInt position=IlvLastPositionIndex)
 Adds an interactor to this object. More...
 
virtual IlvAbstractChartCursorgetAbscissaCursor ()
 Returns the abscissa cursor. More...
 
IlUInt getCardinal () const
 Returns the number of interactors managed by this object. More...
 
IlvChartInteractorgetInteractor (IlUInt index) const
 Returns the interactor at the index index that is managed by this object. More...
 
IlUInt getOrdinateAxisIndex () const
 Returns the index of the ordinate axis to which interactions apply. More...
 
virtual IlvAbstractChartCursorgetOrdinateCursor ()
 Returns the ordinate cursor. More...
 
IlvCoordinateInfogetOrdinateInfo () const
 Returns the ordinate coordinate information to which interactions apply. More...
 
IlBoolean isShowingAbscissaCursor () const
 Returns the show state of the abscissa cursor. More...
 
IlBoolean isShowingOrdinateCursor () const
 Returns the show state of the ordinate cursor. More...
 
void moveCursors (IlBoolean abscissa, IlBoolean ordinate, const IlvPoint &point, const IlvTransformer *t, IlBoolean reDraw=IlTrue)
 Moves the cursors to a given view position. More...
 
void removeCursors ()
 Removes and deletes the abscissa and ordinate cursors.
 
IlBoolean removeInteractor (IlvChartInteractor *interactor)
 Removes an interactor from this object. More...
 
IlBoolean removeInteractor (const char *name)
 Removes an interactor from this object. More...
 
void removeInteractors ()
 Removes and unlocks all managed interactors.
 
void restoreCursorsVisibility (const IlvPoint &point, const IlvTransformer *t)
 Restores the visibility state of the cursors. More...
 
void saveCursorsVisibility ()
 Stores the visibility state of the cursors. More...
 
void setAbscissaCursorVisible (IlBoolean visible)
 Sets the visibility state of the abscissa cursor. More...
 
void setCursorsVisible (IlBoolean abscissa, IlBoolean ordinate, IlBoolean visible)
 Sets the visibility state of the cursors. More...
 
void setOrdinateAxisIndex (IlUInt index)
 Sets the index of the ordinate axis to which interactions apply. More...
 
void setOrdinateCursorVisible (IlBoolean visible)
 Sets the visibility state of the ordinate cursor. More...
 
void showAbscissaCursor (IlBoolean show)
 Sets the show state of the abscissa cursor. More...
 
void showOrdinateCursor (IlBoolean show)
 Sets the show state of the ordinate cursor. More...
 

Static Public Member Functions

static IlvChartInteractorManagerGet (const IlvChartGraphic *chart)
 Returns the interactor manager instance attached to a chart. More...
 
static IlvChartInteractorManagerRemove (IlvChartGraphic *chart)
 Removes the IlvChartInteractorManager attached to a chart. More...
 
static IlvChartInteractorManagerSet (IlvChartGraphic *chart, IlvChartInteractorManager *interMgr)
 Attaches an IlvChartInteractorManager instance to a chart. More...
 

Detailed Description

Manager class for IlvChartInteractor instances.

Library: ilvcharts

This class manages a set of IlvChartInteractor instances. A chart object can be attached to an instance of this class and can register interactors that will handle events.

Constructor & Destructor Documentation

IlvChartInteractorManager::IlvChartInteractorManager ( )

Constructor.

Initializes a new IlvChartInteractorManager object.

virtual IlvChartInteractorManager::~IlvChartInteractorManager ( )
virtual

Destructor.

The destructor removes all managed interactors and unlocks them. It also removes and deletes the cursors.

See Also
removeInteractors, removeCursors.

Member Function Documentation

void IlvChartInteractorManager::addInteractor ( IlvChartInteractor interactor,
IlUInt  position = IlvLastPositionIndex 
)

Adds an interactor to this object.

The interactor is locked.

Parameters
interactorThe interactor to add.
positionThe insertion rank. The rank in the manager serves as the priority order during the event dispatching.
See Also
IlvChartInteractorDispatcher.
void IlvChartInteractorManager::addInteractor ( const char *  name,
IlUInt  position = IlvLastPositionIndex 
)

Adds an interactor to this object.

Adds the shared interactor registered as name to this manager instance. The interactor is locked.

Parameters
nameThe name of the interactor to add.
positionThe insertion rank. The rank in the manager is used to decide the priority in event dispatching.
See Also
IlvChartInteractorDispatcher.
static IlvChartInteractorManager* IlvChartInteractorManager::Get ( const IlvChartGraphic chart)
static

Returns the interactor manager instance attached to a chart.

Parameters
chartThe chart object to which this interactor manager is attached.
Returns
The interactor manager attached to chart.
virtual IlvAbstractChartCursor* IlvChartInteractorManager::getAbscissaCursor ( )
virtual

Returns the abscissa cursor.

This method creates the cursor if it does not exist yet or if it has been deleted.

Returns
The abscissa cursor.
IlUInt IlvChartInteractorManager::getCardinal ( ) const

Returns the number of interactors managed by this object.

Returns
The number of interactors managed by this object.
IlvChartInteractor* IlvChartInteractorManager::getInteractor ( IlUInt  index) const

Returns the interactor at the index index that is managed by this object.

Parameters
indexThe index in the interactor manager.
Returns
The corresponding interactor.
IlUInt IlvChartInteractorManager::getOrdinateAxisIndex ( ) const

Returns the index of the ordinate axis to which interactions apply.

This method returns the index of the ordinate axis that must be considered by the managed interactors. The latter will use this information for such operations as projection, translation, zooming, and so on.

Returns
The index of the handled ordinate axis.
virtual IlvAbstractChartCursor* IlvChartInteractorManager::getOrdinateCursor ( )
virtual

Returns the ordinate cursor.

This method creates the cursor if it does not exist yet or if it has been deleted.

Returns
The ordinate cursor.
IlvCoordinateInfo* IlvChartInteractorManager::getOrdinateInfo ( ) const

Returns the ordinate coordinate information to which interactions apply.

This method returns the coordinate information of the ordinate axis defined by the IlvChartInteractorManager::setOrdinateAxisIndex method or 0 if the index is invalid.

Returns
The corresponding coordinate information.
IlBoolean IlvChartInteractorManager::isShowingAbscissaCursor ( ) const

Returns the show state of the abscissa cursor.

Returns
IlTrue if the abscissa cursor is used and IlFalse otherwise.
IlBoolean IlvChartInteractorManager::isShowingOrdinateCursor ( ) const

Returns the show state of the ordinate cursor.

Returns
IlTrue if the ordinate cursor is used and IlFalse otherwise.
void IlvChartInteractorManager::moveCursors ( IlBoolean  abscissa,
IlBoolean  ordinate,
const IlvPoint point,
const IlvTransformer t,
IlBoolean  reDraw = IlTrue 
)

Moves the cursors to a given view position.

Parameters
abscissaA Boolean value indicating whether the abscissa cursor must be moved.
ordinateA Boolean value indicating whether the ordinate cursor must be moved.
pointThe new position of the cursors in view coordinates.
tThe transformer applied to the current view.
reDrawA Boolean value indicating whether the cursors should be redrawn after the move operation.
static IlvChartInteractorManager* IlvChartInteractorManager::Remove ( IlvChartGraphic chart)
static

Removes the IlvChartInteractorManager attached to a chart.

If the chart is associated with an IlvChartInteractorDispatcher interactor, the latter is removed.

Parameters
chartThe considered chart.
Returns
The IlvChartInteractorManager instance removed from chart.
IlBoolean IlvChartInteractorManager::removeInteractor ( IlvChartInteractor interactor)

Removes an interactor from this object.

Removes interactor from this manager instance. The interactor is unlocked.

Parameters
interactorThe interactor to remove.
Returns
A Boolean value indicating whether the interactor has been successfully removed.
IlBoolean IlvChartInteractorManager::removeInteractor ( const char *  name)

Removes an interactor from this object.

Removes the shared interactor registered as name from this manager instance. The interactor is unlocked.

Parameters
nameThe name of the interactor to remove.
Returns
A Boolean value indicating whether the interactor has been successfully removed.
See Also
IlvChartInteractor::Get.
void IlvChartInteractorManager::restoreCursorsVisibility ( const IlvPoint point,
const IlvTransformer t 
)

Restores the visibility state of the cursors.

This method takes into account the states saved by the most recent call to IlvChartInteractorManager::saveCursorsVisibility. It enables a given interactor to use its own cursor policy and then to reset the former cursors state when an event sequence ends.

Parameters
pointThe new position in view coordinates of the cursors when the visibility states are restored.
tThe transformer applied to the current view.
See Also
saveCursorsVisibility.
void IlvChartInteractorManager::saveCursorsVisibility ( )

Stores the visibility state of the cursors.

Both cursors are shared by all the interactors maintained by this manager instance. This method enables a given interactor to use its own cursor policy and then to reset the cursors to their original state (shown or hidden) when an event sequence ends.

See Also
restoreCursorsVisibility.
static IlvChartInteractorManager* IlvChartInteractorManager::Set ( IlvChartGraphic chart,
IlvChartInteractorManager interMgr 
)
static

Attaches an IlvChartInteractorManager instance to a chart.

If the chart is not yet associated with an IlvChartInteractorDispatcher interactor, a default instance of this class is created and attached to the chart with the IlvGraphic::setInteractor(IlvInteractor*) method.

Parameters
chartThe chart object to which the interactor manager interMgr must be attached.
interMgrThe interactor manager.
Returns
The previous IlvChartInteractorManager instance attached to chart.
void IlvChartInteractorManager::setAbscissaCursorVisible ( IlBoolean  visible)

Sets the visibility state of the abscissa cursor.

This method is used to show or hide the abscissa cursor. An automatic redraw operation is performed if the visibility state has changed.

Parameters
visibleThe visibility state: either shown (IlTrue) or hidden (IlFalse).
void IlvChartInteractorManager::setCursorsVisible ( IlBoolean  abscissa,
IlBoolean  ordinate,
IlBoolean  visible 
)

Sets the visibility state of the cursors.

This method is used to show or hide the cursors handled by this object. An automatic redraw operation is performed if the visibility state has changed.

Parameters
abscissaA Boolean value indicating whether the visibility applies to the abscissa cursor.
ordinateA Boolean value indicating whether the visibility applies to the ordinate cursor.
visibleThe visibility state: either shown (IlTrue) or hidden (IlFalse).
void IlvChartInteractorManager::setOrdinateAxisIndex ( IlUInt  index)

Sets the index of the ordinate axis to which interactions apply.

This method sets the index of the ordinate axis that must be considered by the managed interactors. The latter will use this information for such operations as projection, translation, zooming, and so on.

Parameters
indexThe index of the ordinate axis to be considered.
void IlvChartInteractorManager::setOrdinateCursorVisible ( IlBoolean  visible)

Sets the visibility state of the ordinate cursor.

This method is used to show or hide the ordinate cursor. An automatic redraw operation is performed if the visibility state has changed.

Parameters
visibleThe visibility state: either shown (IlTrue) or hidden (IlFalse).
void IlvChartInteractorManager::showAbscissaCursor ( IlBoolean  show)

Sets the show state of the abscissa cursor.

Parameters
showA Boolean value indicating whether the abscissa cursor is used.
void IlvChartInteractorManager::showOrdinateCursor ( IlBoolean  show)

Sets the show state of the ordinate cursor.

Parameters
showA Boolean value indicating whether the ordinate cursor is used.

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