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/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
// -*- C++ -*-
/*
* Copyright (C) 1990-94 Silicon Graphics, Inc.
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.1.1.1 $
|
| Description:
| This file defines some macros that implement things common to
| many subclasses of SoEvent. They may be used to make SoEvent
| subclassing easier. In all of the macros, the "className"
| parameter refers to the name of the event subclass.
|
| Defined macros:
|
| Within class header:
|
| SO_EVENT_HEADER(className)
|
| Within class source:
|
| At file scope:
|
| SO_EVENT_SOURCE(className)
|
| Class initialization (initClass):
|
| SO_EVENT_INIT_CLASS()
|
|
| Author(s) : David Mott
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_SUB_EVENT_
#define _SO_SUB_EVENT_
#include <Inventor/events/SoEvent.h>
// C-api: end
// *** note: many of the macros use the "do { ... } while(0)"
// *** hack to define multiline blocks as a single statement
// *** of code that can be used anywhere and ended with a semicolon
/////////////////////////////////////////////////////////////////////////////
//
// Macros to be called within the class definition header for an event
// subclass:
//
////////////////////////////////////////////
//
// These defines type-identifier and naming variables and methods that
// all subclasses and abstract subclasses must support.
//
#define SO_EVENT_HEADER() \
public: \
static SoType getClassTypeId() /* Returns class type id */ \
{ return classTypeId; } \
virtual SoType getTypeId() const; /* Returns type id */ \
private: \
static SoType classTypeId /* Type id */
/////////////////////////////////////////////////////////////////////////////
//
// Macros to be called within the source file for an event subclass:
//
////////////////////////////////////////////
//
// This declares the static variables defined in SO_EVENT_HEADER
//
#define SO__EVENT_VARS(className) \
SoType className::classTypeId
////////////////////////////////////////////
//
// Methods on the type
//
#define SO__EVENT_METHODS(className) \
\
SoType \
className::getTypeId() const \
{ \
return classTypeId; \
}
/////////////////////////////////////////////
//
// These include all the definitions required
// at file scope
//
#define SO_EVENT_SOURCE(className) \
SO__EVENT_VARS(className); \
SO__EVENT_METHODS(className)
////////////////////////////////////////////
//
// This initializes the type identifer variables defined in
// SO_EVENT_HEADER . This macro should be called from within initClass().
// The parentClass argument should be the class that this subclass is
// derived from.
//
#define SO_EVENT_INIT_CLASS(className,parentClass) \
classTypeId = \
SoType::createType(parentClass::getClassTypeId(), \
SO__QUOTE(className))
// C-api: begin
#endif /* _SO_SUB_EVENT_ */
|
