casa::WCMotionEH Class Reference

Base class for handling WorldCanvas motion events.

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#include <WCMotionEH.h>

Inheritance diagram for casa::WCMotionEH:

List of all members.

Public Member Functions
	WCMotionEH ()
	Default Constructor Required.
virtual void	operator() (const WCMotionEvent &ev)=0
	default sends event to cout
virtual	~WCMotionEH ()
	Destructor.

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Detailed Description

Base class for handling WorldCanvas motion events.

Prerequisite

• WCMotionEvent
• Understanding of Display library event-handling methodology

Etymology

WCMotionEH : WorldCanvas motion event-handler.

Synopsis

This is a base class intended to be derived from in applications. The user must write a derived class and override the operator() function. The operator() function is called whenever the pointer moves across the world canvas.

This base class does have a concrete implementation, namely to report to stdout events it receives. To effect this behaviour, create an instance this class and register it as an event-handler on a WorldCanvas.

Motivation

Provide the user with an object-oriented approach to event handling and include world-coordinate position information.

Example

see the test programs in Display/test.

Definition at line 70 of file WCMotionEH.h.

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Constructor & Destructor Documentation

casa::WCMotionEH::WCMotionEH

(

)

Default Constructor Required.

virtual casa::WCMotionEH::~WCMotionEH

(

)

[virtual]

Destructor.

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Member Function Documentation

virtual void casa::WCMotionEH::operator()

(

const WCMotionEvent &

ev

)

[pure virtual]

default sends event to cout

Implemented in casa::QtDisplayPanel, casa::Profile2dDD, casa::WorldCanvasHolder, casa::SlicePanelDisplay, casa::MultiWCTool, casa::DDDObject, casa::DDDEllipse, casa::DDDPolygon, casa::DDDRectangle, casa::WCToolMotEH, casa::SliceEH, and casa::viewer::RegionToolManager.

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

• code/display/DisplayEvents/WCMotionEH.h