IlvManagerViewHook Class Reference

Manager hook class. More...

#include <ilviews/manager/hook.h>

Inheritance diagram for IlvManagerViewHook:

Public Member Functions
	IlvManagerViewHook (IlvManager *manager=0, IlvView *view=0)
	Constructor. More...
virtual void	afterDraw (IlvPort *dst, const IlvTransformer *t=0, const IlvRegion *region=0, const IlvRegion *clip=0)
	Called after the manager has drawn its contents. More...
virtual void	afterExpose (const IlvRect &rect)
	Called after the manager has received an Expose event in the view to which the hook is connected. More...
virtual void	beforeDraw (IlvPort *dst, const IlvTransformer *t=0, const IlvRegion *region=0, const IlvRegion *clip=0)
	Called before the manager draws its contents. More...
virtual void	contentsChanged ()
	Called when the contents of the manager change.
IlvManager *	getManager () const
	Returns the manager. More...
IlvView *	getView () const
	Returns the manager view. More...
virtual void	interactorChanged (IlvManagerViewInteractor *current, IlvManagerViewInteractor *previous)
	Called when the interactor of the manager view changes. More...
void	setManager (IlvManager *manager)
	Sets the manager. More...
void	setView (IlvView *view)
	Sets the manager view. More...
virtual void	transformerChanged (const IlvTransformer *current, const IlvTransformer *previous)
	Called when you change the transformer of the view to which the hook is connected. More...
virtual void	viewRemoved ()
	Called when the view to which the hook is connected is removed from the list of views that the manager handles.
virtual void	viewResized ()
	Called when the manager view is resized. More...

Friends
class	IlvMgrView

Detailed Description

Manager hook class.

Library: ilvmgr

There is a mechanism that lets you detect events such as drawing in a view, changing a transformer, and so on. This mechanism is implemented by using view hooks. A view hook is an instance of the IlvManagerViewHook class. This class has a number of virtual member functions that are automatically called by Rogue Wave Views when particular operations occur in a manager.

See also

IlvManager::installViewHook, IlvManager::removeViewHook, IlvMatrixHook.

Constructor & Destructor Documentation

IlvManagerViewHook()

IlvManagerViewHook::IlvManagerViewHook	(	IlvManager *	manager = 0,
		IlvView *	view = 0
	)

Constructor.

The constructor initializes a new view hook.

Parameters

manager	Specifies the manager.
view	The view on which to detect events. The view must be connected to manager.

Member Function Documentation

afterDraw()

virtual void IlvManagerViewHook::afterDraw ( IlvPort *  dst, const IlvTransformer *  t = 0, const IlvRegion *  region = 0, const IlvRegion *  clip = 0  )

virtual

Called after the manager has drawn its contents.

Acts the same way as IlvManagerViewHook::beforeDraw but is called after the manager has updated the view. This lets you create additional drawings on top of those drawn by the manager.

afterExpose()

virtual void IlvManagerViewHook::afterExpose ( const IlvRect &  rect )

virtual

Called after the manager has received an Expose event in the view to which the hook is connected.

Parameters

rect	The rectangular area exposed.

beforeDraw()

virtual void IlvManagerViewHook::beforeDraw ( IlvPort *  dst, const IlvTransformer *  t = 0, const IlvRegion *  region = 0, const IlvRegion *  clip = 0  )

virtual

Called before the manager draws its contents.

Called internally by the manager to which this hook is connected, just before it redraws the hook view. Use this function if you need to perform additional drawings in the view before the manager draws it.

Parameters

dst	The output port for the drawing functions. It can be different from the view itself.
t	The transformer applied by the manager to the view.
region	Contains the areas to be refreshed (in the view coordinate system).
clip	The clipping region to be used.

getManager()

IlvManager* IlvManagerViewHook::getManager

(

)

const

Returns the manager.

Returns

The manager for which this hook was created.

getView()

IlvView* IlvManagerViewHook::getView

(

)

const

Returns the manager view.

Returns

The view this hook acts on.

interactorChanged()

virtual void IlvManagerViewHook::interactorChanged ( IlvManagerViewInteractor *  current, IlvManagerViewInteractor *  previous  )

virtual

Called when the interactor of the manager view changes.

Called when you change the view interactor for the view to which the hook is connected.

Parameters

current	The new interactor set on the view.
previous	The interactor previously set on the view.

Reimplemented in IlvManagerViewInteractorSelector, and IlvMatrixHook.

setManager()

void IlvManagerViewHook::setManager

(

IlvManager *

manager

)

Sets the manager.

Connects the hook to a manager. This lets you use the same hook in several managers, one after the other. Use the member function IlvManagerViewHook::setView to modify the view you want this hook to act on.

Parameters

manager

The manager to connect to.

setView()

void IlvManagerViewHook::setView

(

IlvView *

view

)

Sets the manager view.

Sets the view on which to watch events. This lets you use the same hook in several views in the same manager, one after the other.

Parameters

view	Specifies the view. It must be connected to the manager.

transformerChanged()

virtual void IlvManagerViewHook::transformerChanged ( const IlvTransformer *  current, const IlvTransformer *  previous  )

virtual

Called when you change the transformer of the view to which the hook is connected.

Parameters

current	The new transformer set on the view.
previous	The transformer previously set on the view.

viewResized()

virtual void IlvManagerViewHook::viewResized ( )

virtual

Called when the manager view is resized.

Called when the view to which the hook is connected is resized.