IlvEventAccessor Class Reference

Handling events behavior (usually mouse or keyboard events). More...

#include <ilviews/protos/eventacc.h>

Inheritance diagram for IlvEventAccessor:

Public Member Functions
	IlvEventAccessor (const char *name, const IlvValueTypeClass *type, const char *nodeName, IlvEventType eventType, IlUShort detail, IlUShort modifiers, IlvEventAccessorData whichData)
	Creates an event accessor. More...
virtual IlBoolean	handleEvent (IlvAccessorHolder *object, IlvGraphic *g, IlvEvent &, IlvView *, IlvTransformer *t)
	Filters the events and performs the value change of the attribute (if appropriate). More...
Public Member Functions inherited from IlvAbstractEventAccessor
	IlvAbstractEventAccessor (const char *name, const IlvValueTypeClass *type, const char *nodeName)
	Creates an event accessor. More...
virtual void	initialize (const IlvAccessorHolder *object)
	Attachment method to an IlvAccessorHolder. More...
Public Member Functions inherited from IlvUserAccessor
	IlvUserAccessor (const char *name, const IlvValueTypeClass *type, IlUInt flags=0)
	Constructor. More...
virtual IlBoolean	isOutputValue (const IlSymbol *) const
	Queries if the accessor is an output accessor. More...
IlBoolean	isPrivate () const
	Checks the private status. More...
IlBoolean	isRuntime () const
	Checks the RunTime status. More...
void	setPrivate (IlBoolean val)
	Sets the Private flag of this accessor. More...
void	setRuntime (IlBoolean runTime)
	Sets the RunTime flag of this accessor. More...
Public Member Functions inherited from IlvAccessor
	IlvAccessor (const char *name, IlvValueTypeClass *type)
	Creates a new accessor of name name and type type.
virtual IlBoolean	changeValue (IlvAccessorHolder *object, const IlvValue &val)
	Called by the method IlvAccessible::changeValue() for each IlvAccessor attached to the IlvAccessorHolder.
virtual IlBoolean	changeValues (IlvAccessorHolder *object, const IlvValue *values, IlUShort count)
	Called by the method IlvAccessible::changeValues() for each IlvAccessor attached to the IlvAccessorHolder.
virtual void	getAccessors (const IlSymbol *const **accessors, const IlvValueTypeClass *const **types, IlUInt &count) const
	Returns the names and types of the values handled by this accessor. More...
const IlSymbol *	getName () const
	Returns the name of the accessor. More...
IlvValueTypeClass *	getType () const
	Returns the type of the accessor. More...
virtual IlBoolean	isOutputAccessor (IlBoolean &inputAndOutput)
	Queries if the accessor is an output accessor. More...
virtual IlShort	matchValues (const IlvAccessorHolder *object, const IlvValue *values, IlUShort count, IlvValue *matchingValues=0) const
	Returns the number of values that are handled by the accessor in the values array of length count. More...
virtual IlvValue &	queryValue (const IlvAccessorHolder *object, IlvValue &val) const
	Called by the method IlvAccessible::queryValue() for each IlvAccessor attached to the IlvAccessorHolder.
virtual void	queryValues (const IlvAccessorHolder *object, IlvValue *values, IlUShort count) const
	Called by the method IlvAccessible::queryValues() for each IlvAccessor attached to the IlvAccessorHolder.
void	setName (const IlSymbol *name)
	Sets the name of the accessor. More...

Additional Inherited Members
Protected Member Functions inherited from IlvUserAccessor
virtual IlUInt	compareValues (const IlvAccessorHolder *object, const IlvAccessible *ref, IlvValue *values, IlUShort count, IlvValueArray &diffs) const
	Compares the values in ref and object and returns the differing values. More...
IlBoolean	getValue (IlvValue &val, const IlvAccessorHolder *object, IlvDisplay *display, IlvValueTypeClass *typeClass=0, IlSymbol *typeVal=0, const IlvValue *arg=0) const
	Evaluates a parameter of a user accessor. More...

Detailed Description

Handling events behavior (usually mouse or keyboard events).

Library: ilvproto
IlvEventAccessor is a subtype of the IlvAbstractEventAccessor class that handles events of a specified type. When an event is received, the attribute value is set to one of the data members of the event.

See also

IlvEventAccessorData, IlvEvent, IlvEventType.

Constructor & Destructor Documentation

IlvEventAccessor()

IlvEventAccessor::IlvEventAccessor	(	const char *	name,
		const IlvValueTypeClass *	type,
		const char *	nodeName,
		IlvEventType	eventType,
		IlUShort	detail,
		IlUShort	modifiers,
		IlvEventAccessorData	whichData
	)

Creates an event accessor.

Parameters

name	Name of the attribute that handles events.
type	Type of the attribute that handles events.
nodeName	Name of the node for which events are handled. If nodeName is "[All_nodes]", the accessor handles user events received by any node of the group to which it is attached. If nodeName is the name of a subgroup, the accessor handles events received by any node of the subgroup.
eventType	Type of the events that must be handled (for example, IlvButtonDown).
detail	Code of the events. For example IlvLeftButton, the ASCII code of the character 'a', or the key code IlvReturn.
modifiers	A mask specifying a combination of modifier keys that must be pressed, for example IlvCtrlModifier | IlvShiftModifier. Only the events with the specified modifiers will be handled. Use IlvAnyModifier to ignore the modifiers of the event.
whichData	Specifies which data member of the event the accessor value will be set to.

See also

IlvEventAccessorData, IlvEventType.

Member Function Documentation

handleEvent()

virtual IlBoolean IlvEventAccessor::handleEvent ( IlvAccessorHolder *  object, IlvGraphic *  g, IlvEvent &  , IlvView *  , IlvTransformer *  t  )

virtual

Filters the events and performs the value change of the attribute (if appropriate).

Filters the events according to the eventType, detail, and modifiers parameters of the constructor. Then, it calls IlvAccessible::changeValue() to set the accessor value to the event data member specified by the whichData parameter.

See also

IlvAbstractEventAccessor::handleEvent().

Reimplemented from IlvAbstractEventAccessor.