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IlvAbstractEventAccessor Class Reference

Abstract class handling event behaviors, usually mouse or keyboard events. More...

#include <ilviews/protos/eventacc.h>

Inheritance diagram for IlvAbstractEventAccessor:
IlvUserAccessor IlvAccessor IlvEventAccessor IlvRotationAccessor IlvSlideXAccessor IlvSlideYAccessor

Public Member Functions

 IlvAbstractEventAccessor (const char *name, const IlvValueTypeClass *type, const char *nodeName)
 Creates an event accessor. More...
 
virtual IlBoolean handleEvent (IlvAccessorHolder *object, IlvGraphic *g, IlvEvent &event, IlvView *view, IlvTransformer *t)
 Event handling method, to be derived in subclasses. 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 IlSymbolgetName () const
 Returns the name of the accessor. More...
 
IlvValueTypeClassgetType () 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 IlvValuequeryValue (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

Abstract class handling event behaviors, usually mouse or keyboard events.

Library: ilvproto
Allows you to catch user events on specified nodes of a group in order to trigger behaviors. It is the superclass of IlvEventAccessor, IlvRotationAccessor, IlvSlideXAccessor, and IlvSlideYAccessor. You will not use this class directly, unless you need to define a new user accessor subclass that handles user events.

Constructor & Destructor Documentation

§ IlvAbstractEventAccessor()

IlvAbstractEventAccessor::IlvAbstractEventAccessor ( const char *  name,
const IlvValueTypeClass type,
const char *  nodeName 
)

Creates an event accessor.

Parameters
nameName of the attribute that will be triggered when an event of the appropriate type is received.
typeType of the accessor. Used only for initialization purposes.
nodeNameName 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.
See also
IlvEvent, IlvEventAccessor, IlvRotationAccessor, IlvSlideXAccessor, IlvSlideYAccessor.

Member Function Documentation

§ handleEvent()

virtual IlBoolean IlvAbstractEventAccessor::handleEvent ( IlvAccessorHolder object,
IlvGraphic g,
IlvEvent event,
IlvView view,
IlvTransformer t 
)
virtual

Event handling method, to be derived in subclasses.

Called for every event received by one of the nodes specified by the nodeName argument of the constructor. It must be redefined by subclasses to implement the effect of the accessor.

Parameters
objectGroup to which the accessor is attached.
gGraphic object that received the event.
eventEvent received.
viewView in which the event was received.
tTransformer associated with the view, or 0 if the view has no transformer.

Reimplemented in IlvSlideYAccessor, IlvSlideXAccessor, IlvEventAccessor, and IlvRotationAccessor.

§ initialize()

virtual void IlvAbstractEventAccessor::initialize ( const IlvAccessorHolder object)
virtual

Attachment method to an IlvAccessorHolder.

This method is called when the accessor object is attached to a group. You can redefine it in subclasses of IlvUserAccessor to perform any kind of initialization.

Parameters
objectThe object the accessor is attached to.

Reimplemented from IlvUserAccessor.

Reimplemented in IlvSlideYAccessor, IlvSlideXAccessor, and IlvRotationAccessor.


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