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:

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left button: SoMouseButtonEvent::BUTTON1

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middle button: SoMouseButtonEvent::BUTTON2

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right button: SoMouseButtonEvent::BUTTON3

While in this SIM SoQt library the mappings are:

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left button: SoMouseButtonEvent::BUTTON1

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middle button: SoMouseButtonEvent::BUTTON3

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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 (intmask = 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:

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left mousebutton: SoMouseButtonEvent::BUTTON1

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right mousebutton: SoMouseButtonEvent::BUTTON2

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middle mousebutton, if available: SoMouseButtonEvent::BUTTON3

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forward motion on a wheel mouse: SoMouseButtonEvent::BUTTON4

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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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