NAME
SoQtMouse - 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.
SYNOPSIS
#include <Inventor/Qt/devices/SoQtMouse.h>
Inherits SoQtDevice.
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)
Friends
class SoQtMouseP
class SoGuiMouseP
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
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 (int mask = ALL_EVENTS)
Constructor. The mask argument should contain the set of
SoQtMouse::Events one is interested in tracking.
SoQtMouse::~SoQtMouse (void) [virtual]
Destructor.
Member Function Documentation
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.
void SoQtMouse::disable (QWidget * widget, SoQtEventHandler * handler, void
* closure) [virtual]
This method will disable the handler for the device.
Implements SoQtDevice.
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.
References BUTTON_MOTION, BUTTON_PRESS, BUTTON_RELEASE, POINTER_MOTION,
and SoQtDevice::setEventPosition().
Author
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