SoQtMouse Class Reference

The SoQtMouse class is the mouse input device abstraction. More...

#include <Inventor/Qt/devices/SoQtMouse.h>

Inheritance diagram for SoQtMouse:

Public Types
enum	Events {   BUTTON_PRESS = 0x01, BUTTON_RELEASE = 0x02, POINTER_MOTION = 0x04, BUTTON_MOTION = 0x08,   ALL_EVENTS = BUTTON_PRESS | BUTTON_RELEASE | POINTER_MOTION | BUTTON_MOTION }

Public Member Functions
	SoQtMouse (int eventmask=ALL_EVENTS)
virtual	~SoQtMouse (void)
virtual void	enable (QWidget *widget, SoQtEventHandler *handler, void *closure)
virtual void	disable (QWidget *widget, SoQtEventHandler *handler, void *closure)
virtual const SoEvent *	translateEvent (QEvent *event)
Public Member Functions inherited from SoQtDevice
virtual	~SoQtDevice ()
void	setWindowSize (const SbVec2s size)
SbVec2s	getWindowSize (void) const
Public Member Functions inherited from SoQtObject
virtual SoType	getTypeId (void) const =0
SbBool	isOfType (SoType type) const

Additional Inherited Members
Static Public Member Functions inherited from SoQtDevice
static void	initClasses (void)
Static Public Member Functions inherited from SoQtObject
static void	initClass (void)
static SoType	getClassTypeId (void)
static void	init (void)
Protected Member Functions inherited from SoQtDevice
	SoQtDevice (void)
void	setEventPosition (SoEvent *event, int x, int y) const
void	addEventHandler (QWidget *, SoQtEventHandler *, void *)
void	removeEventHandler (QWidget *, SoQtEventHandler *, void *)
void	invokeHandlers (QEvent *event)
Static Protected Member Functions inherited from SoQtDevice
static SbVec2s	getLastEventPosition (void)

Detailed Description

The SoQtMouse class is the mouse input device abstraction.

The SoQtMouse class is the glue between native mouse handling and mouse interaction in the Inventor scenegraph.

All components derived from the SoQtRenderArea have got an SoQtMouse device attached by default.

One important note for application programmers: our mappings to SoMouseButtonEvent::BUTTON2 and SoMouseButtonEvent::BUTTON3 do not match the mappings in SGI's InventorXt library or TGS's SoWin library for 3-button mice. They map mouse buttons like this:

• left button: SoMouseButtonEvent::BUTTON1
• middle button: SoMouseButtonEvent::BUTTON2
• right button: SoMouseButtonEvent::BUTTON3

While in this SIM SoQt library the mappings are:

• left button: SoMouseButtonEvent::BUTTON1
• middle button: SoMouseButtonEvent::BUTTON3
• right button: SoMouseButtonEvent::BUTTON2

This is a conscious design decision we've made. The reason is that BUTTON2 should be the right mouse button whether you have a 2-button mouse or a 3-button mouse.

Member Enumeration Documentation

Events

enum SoQtMouse::Events

Enumeration over supported mouse events.

Enumerator
BUTTON_PRESS	Maskbit for mousebutton press events.
BUTTON_RELEASE	Maskbit for mousebutton release events.
POINTER_MOTION	Maskbit for mousepointer motion events.
BUTTON_MOTION	Maskbit for mousepointer motion events with one or more mousebuttons pressed.
ALL_EVENTS	Mask which includes all the maskbits in the enum (ie use this to signal interest in all kinds of events for the mouse device).

Constructor & Destructor Documentation

SoQtMouse()

SoQtMouse::SoQtMouse

(

int

mask = ALL_EVENTS

)

Constructor. The mask argument should contain the set of SoQtMouse::Events one is interested in tracking.

~SoQtMouse()

SoQtMouse::~SoQtMouse ( void  )

virtual

Destructor.

Member Function Documentation

enable()

void SoQtMouse::enable ( QWidget *  widget, SoQtEventHandler *  handler, void *  closure  )

virtual

This method will enable the device for the widget.

handler is invoked with the closure argument when an event occur in widget.

Implements SoQtDevice.

disable()

void SoQtMouse::disable ( QWidget *  widget, SoQtEventHandler *  handler, void *  closure  )

virtual

This method will disable the handler for the device.

Implements SoQtDevice.

translateEvent()

const SoEvent * SoQtMouse::translateEvent ( QEvent *  event )

virtual

Translates a native event from the underlying toolkit into a generic event.

This is then returned in the form of an instance of a subclass of the Inventor API's SoEvent class, either an SoMouseButtonEvent or an SoLocation2Event, depending on whether the native event is a mousebutton press / release, or a mousecursor movement event.

The mapping of the mousebuttons upon generation of SoMouseButtonEvent events will be done as follows:

• left mousebutton: SoMouseButtonEvent::BUTTON1
• right mousebutton: SoMouseButtonEvent::BUTTON2
• middle mousebutton, if available: SoMouseButtonEvent::BUTTON3
• forward motion on a wheel mouse: SoMouseButtonEvent::BUTTON4
• backward motion on a wheel mouse: SoMouseButtonEvent::BUTTON5

Note that the rightmost mousebutton will always map to SoMouseButtonEvent::BUTTON2, even on a 3-button mouse.

Implements SoQtDevice.

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

• SoQtMouse.h
• SoQtMouseCommon.cpp
• SoQtMouse.cpp