Mouse wheel events. More...

#include <Inventor/events/SoMouseWheelEvent.h>

Inheritance diagram for SoMouseWheelEvent:

Public Member Functions
virtual SoType	getTypeId () const
	Returns the type identifier for this specific instance.

	SoMouseWheelEvent ()
	Constructor.

void	setDelta (int delta)
	Sets the mouse wheel delta.

int	getDelta () const
	Gets the mouse wheel delta.

Public Member Functions inherited from SoEvent
	SoEvent ()
	Constructor.

virtual	~SoEvent ()
	Destructor.

virtual void	setTime (SbTime t)
	Sets the time at which the event occurred.

SbTime	getTime () const
	Gets the time at which the event occurred.

virtual void	setPosition (const SbVec2s &p)
	Sets the window pixel location of the cursor when the event occurred.

virtual void	setPosition (const SbVec2f &p)
	Float version of setPosition(const SbVec2s &p).

const SbVec2s &	getPosition () const
	Returns the window pixel location of the cursor when the event occurred as integer values.

const SbVec2f &	getPositionFloat () const
	Returns the window pixel location of the cursor when the event occurred as float values.

const SbVec2s &	getPosition (const SbViewportRegion &vpRgn) const
	Gets the viewport pixel location of the cursor when the event occurred, relative to the origin of the specified viewport region, as integer values.

const SbVec2f &	getPositionFloat (const SbViewportRegion &vpRgn) const
	Gets the viewport pixel location of the cursor when the event occurred, relative to the origin of the specified viewport region, as float values.

const SbVec2f &	getNormalizedPosition (const SbViewportRegion &vpRgn) const
	Gets the normalized location of the cursor when the event occurred, relative to the specified viewport region.

void	setShiftDown (SbBool isDown)
	Sets whether the shift key was down when the event occurred.

void	setCtrlDown (SbBool isDown)
	Sets whether the CTRL key was down when the event occurred.

void	setAltDown (SbBool isDown)
	Sets whether the ALT key was down when the event occurred.

void	setButton1Down (SbBool isDown)
	Sets whether mouse Button 1 was down when the event occurred.

SbBool	wasShiftDown () const
	Returns true if the shift key was down when the event occurred.

SbBool	wasCtrlDown () const
	Returns true if the CTRL key was down when the event occurred.

SbBool	wasAltDown () const
	Returns true if the ALT key was down when the event occurred.

SbBool	wasButton1Down () const
	Returns true if mouse button 1 was down when the event occurred.

virtual const SbTrackerInfo *	getTrackerInfo () const
	Gets whether an event object has associated tracker information.

SbTrackerInfo *	getTrackerInfo ()
	Gets whether an event object has associated tracker information.

Public Member Functions inherited from SoTypedObject
SbBool	isOfType (const SoType &type) const
	Returns TRUE if this object is of the type specified in type or is derived from that type.

template<typename TypedObjectClass >
SbBool	isOfType () const
	Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class.

Static Public Member Functions
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Static Public Member Functions inherited from SoEvent
static SoType	getClassTypeId ()
	Returns the type id for the SoEvent class.

Static Public Member Functions inherited from SoTypedObject
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Detailed Description

Mouse wheel events.

SoMouseWheelEvent represents a change in mouse wheel rotation event in the Open Inventor event model.

The wheel has discrete, evenly spaced notches. When you rotate the wheel, a wheel message is sent as each notch is encountered. Most modern mouse wheels generate an event with a value of 120 per each notch of the wheel. Pressing the shift key while moving the mouse wheel will generate events of double the wheel delta (i.e., 240 by default). If necessary, you can use environment variable OIV_WHEEL_DELTA to change this value (see SoPreferences).

The getDelta() method returns the distance that the mouse wheel has been rotated. A positive value indicates the wheel was rotated forward (away from the user); a negative value indicates the wheel was rotated backwards (toward the user). The values are specified in multiples of the wheel delta.

NOTE: Wheel delta values are NOT always +/- 120. In the case of wheel delta values in a browser, i.e. using RemoteViz, the base delta value seems to be scaled by the Windows Zoom level. E.g. with Windows 7 and Chrome, when using the default/typical "Medium" setting, the zoom level is 125% and the browser returns 125% * 120 = 150. It is safe to use the sign of the value (positive or negative).

Constructor & Destructor Documentation

◆ SoMouseWheelEvent()

SoMouseWheelEvent::SoMouseWheelEvent ( )

Constructor.

Member Function Documentation

◆ getClassTypeId()

static SoType SoMouseWheelEvent::getClassTypeId ( )

static

Returns the type identifier for this class.

◆ getDelta()

int SoMouseWheelEvent::getDelta ( ) const

inline

Gets the mouse wheel delta.

Definition at line 96 of file SoMouseWheelEvent.h.

◆ getTypeId()

virtual SoType SoMouseWheelEvent::getTypeId ( ) const

virtual

Returns the type identifier for this specific instance.

Reimplemented from SoEvent.

◆ setDelta()

void SoMouseWheelEvent::setDelta ( int delta )

inline

Sets the mouse wheel delta.

Definition at line 91 of file SoMouseWheelEvent.h.

The documentation for this class was generated from the following file:

Inventor/events/SoMouseWheelEvent.h

Open Inventor Release 2024.1.3

Public Member Functions

Static Public Member Functions