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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) 1995-96 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 the SoLocateHighlight node class.
|
| It has two fields,
| color and style
|
| When the cursor is over the stuff below this node,
| it will be redrawn (to the front buffer) with the color
| emissive and/or diffuse in the state and the override flag ON.
|
| Author(s) : Alain Dumesny, Paul Isaacs
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_LOCATE_HIGHLIGHT_
#define _SO_LOCATE_HIGHLIGHT_
#include <GL/gl.h>
#include <Inventor/fields/SoSFColor.h>
#include <Inventor/fields/SoSFEnum.h>
#include <Inventor/nodes/SoSeparator.h>
class SoAction;
class SoHandleEventAction;
class SoGLRenderAction;
class SoFullPath;
class SoColorPacker;
//////////////////////////////////////////////////////////////////////////////
//
// Class: SoLocateHighlight
//
//////////////////////////////////////////////////////////////////////////////
// C-api: prefix=SoLocHigh
// C-api: public=color, style
class SoLocateHighlight : public SoSeparator {
SO_NODE_HEADER(SoLocateHighlight);
public:
enum Styles { // Possible values for draw style
EMISSIVE, // changes emissive color only (default)
EMISSIVE_DIFFUSE // changes emissive and diffuse colors
};
enum Modes { // Possible values for the mode
AUTO, // highlight when mouse is over (default)
ON, // always highlight
OFF // never highlight
};
// Fields
SoSFColor color; // highlighting color - default [.3, .3, .3]
SoSFEnum style; // EMISSIVE/EMISSIVE_DIFFUSE
SoSFEnum mode; // ON/OFF/AUTO
// Constructor
SoLocateHighlight();
SoEXTENDER public:
// Override handleEvent to look for mouse motion, to do a
// pick and highlight if mouse is over us. The GLRender methods
// are redefined to draw highlighted if needed.
virtual void handleEvent( SoHandleEventAction *action );
virtual void GLRenderBelowPath(SoGLRenderAction *action);
virtual void GLRenderInPath(SoGLRenderAction *action);
SoINTERNAL public:
static void initClass(); // initialize the class
// This will de-highlight the currently highlighted node if any.
// this should be called when the cursor leaves a window or a mode
// changes happen which would prevent a highlighted node from receiving
// more mouse motion events. The GL render action used to render into
// that window needs to be passed to correctly un-highlight.
static void turnOffCurrentHighlight(SoGLRenderAction *action);
protected:
virtual ~SoLocateHighlight();
// This is called when this nodes needs to highlight or de-highlight. It
// can be used by subclasses to be told when the status change.
virtual void redrawHighlighted(SoAction *act, SbBool flag);
private:
// highlighting stuff
SbBool highlightingPass;
static SoFullPath *currentHighlightPath;
SbBool isHighlighted(SoAction *action);
SbBool preRender(SoGLRenderAction *act, GLint &oldDepthFunc);
SoColorPacker *colorPacker;
};
#endif /* _SO_LOCATE_HIGHLIGHT_ */
|
