SoEvent(3) The SoEvent class is the base class for all Coin events.

SYNOPSIS


#include <Inventor/events/SoEvent.h>

Inherited by SoButtonEvent, SoLocation2Event, and SoMotion3Event.

Public Member Functions


SoEvent (void)

virtual ~SoEvent ()

SbBool isOfType (SoType type) const

virtual SoType getTypeId (void) const

void setTime (const SbTime t)

SbTime getTime (void) const

void setPosition (const SbVec2s &p)

const SbVec2s & getPosition (void) const

const SbVec2s getPosition (const SbViewportRegion &vpRgn) const

const SbVec2f getNormalizedPosition (const SbViewportRegion &vpRgn) const

void setShiftDown (SbBool isDown)

SbBool wasShiftDown (void) const

void setCtrlDown (SbBool isDown)

SbBool wasCtrlDown (void) const

void setAltDown (SbBool isDown)

SbBool wasAltDown (void) const

Static Public Member Functions


static SoType getClassTypeId (void)

static void initClass (void)

Detailed Description

The SoEvent class is the base class for all Coin events.

Coin contains its own set of event classes, independent of the underlying window system.

Upon system specific events, a translation is done by the window specific device classes into one of the Coin event object classes listed below. The event is then typically sent by the render area to an SoSceneManager which will apply it to the scenegraph through an SoHandleEventAction.

Events may be caught by the user by attaching an SoEventCallback node to the scenegraph, or it can automatically be handled by a dragger or manipulator in the graph.

See also:

SoButtonEvent, SoKeyboardEvent, SoLocation2Event, SoMotion3Event

SoMouseButtonEvent, SoSpaceballButtonEvent

SoEventCallback, SoHandleEventAction

Constructor & Destructor Documentation

SoEvent::SoEvent (void)

Constructor, will set all modifiers to 'off' state.

SoEvent::~SoEvent () [virtual]

Destructor.

Member Function Documentation

SbBool SoEvent::isOfType (SoTypetype) const

Returns TRUE if this object either has the same type as the given type parameter, or if type belongs to a superclass of ourselves.

SoType SoEvent::getClassTypeId (void) [static]

This static method returns the SoType object associated with objects of this class.

Reimplemented in SoKeyboardEvent, SoSpaceballButtonEvent, SoMouseButtonEvent, SoButtonEvent, SoMotion3Event, and SoLocation2Event.

SoType SoEvent::getTypeId (void) const [virtual]

Returns the actual type id of an instantiated object.

Reimplemented in SoKeyboardEvent, SoSpaceballButtonEvent, SoMouseButtonEvent, SoButtonEvent, SoMotion3Event, and SoLocation2Event.

void SoEvent::setTime (const SbTimet)

From a system specific device object, set the time the event occurred.

See also:

getTime()

SbTime SoEvent::getTime (void) const

Returns the time the event occurred.

See also:

getPosition(), wasShiftDown(), wasCtrlDown(), wasAltDown()

void SoEvent::setPosition (const SbVec2s &p)

From a system specific device object, set the mouse pointer position when the event occurred.

See also:

getPosition(), getNormalizedPosition()

const SbVec2s & SoEvent::getPosition (void) const

Returns the mouse pointer position when the event occurred. The coordinates are given relative to the window coordinates.

See also:

getNormalizedPosition(), getTime(), wasShiftDown(), wasCtrlDown(),

wasAltDown()

const SbVec2s SoEvent::getPosition (const SbViewportRegion &vpRgn) const

Returns the mouse pointer position when the event occurred. The coordinates are given relative to the viewport coordinates.

See also:

getNormalizedPosition(), getTime(), wasShiftDown(), wasCtrlDown(),

wasAltDown()

const SbVec2f SoEvent::getNormalizedPosition (const SbViewportRegion &vpRgn) const

Returns the mouse pointer position when the event occurred. The coordinates are given relative to the viewport coordinates, normalized according to the size of the viewport.

See also:

getPosition(), getTime(), wasShiftDown(), wasCtrlDown(), wasAltDown()

void SoEvent::setShiftDown (SbBoolisDown)

From a system specific device object, set the state of the Shift key(s) when the event occurred.

See also:

wasShiftDown(), setCtrlDown(), setAltDown()

SbBool SoEvent::wasShiftDown (void) const

Returns state of Shift key(s) when the event occurred.

See also:

wasCtrlDown(), wasAltDown(), getPosition(), getTime()

void SoEvent::setCtrlDown (SbBoolisDown)

From a system specific device object, set the state of the Ctrl key(s) when the event occurred.

See also:

wasCtrlDown(), setShiftDown(), setAltDown()

SbBool SoEvent::wasCtrlDown (void) const

Returns state of Ctrl key(s) when the event occurred.

See also:

wasShiftDown(), wasAltDown(), getPosition(), getTime()

void SoEvent::setAltDown (SbBoolisDown)

From a system specific device object, set the state of the Alt key(s) when the event occurred.

See also:

wasAltDown(), setCtrlDown(), setShiftDown()

SbBool SoEvent::wasAltDown (void) const

Returns state of Alt key(s) when the event occurred.

See also:

wasShiftDown(), wasCtrlDown(), getPosition(), getTime()

void SoEvent::initClass (void) [static]

Initialize SoEvent and all it's known subclasses (i.e. all subclasses which are part of the standard classes in the Coin library).

This method is called from SoDB::init(), so it's very unlikely that you will have to call it explicitly.

Reimplemented in SoKeyboardEvent, SoSpaceballButtonEvent, SoMouseButtonEvent, SoButtonEvent, SoMotion3Event, and SoLocation2Event.

Author

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