File: SoXtBitmapButton.c++

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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/
 *
 */

/*
 * Copyright (C) 1992   Silicon Graphics, Inc.
 *
 _______________________________________________________________________
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 |
 |   $Revision: 1.3 $
 |
 |   Classes:
 |	SoXtBitmapButton
 |
 |   Author(s)	: Alain Dumesny
 |
 |
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 _______________________________________________________________________
 */
#include <inttypes.h>
#include <X11/Intrinsic.h>
#include <Xm/Xm.h>
#include <Xm/PushB.h>
#include <Xm/PushBG.h>

#include "SoXtBitmapButton.h"

#define SCREEN(w) XScreenNumberOfScreen( XtScreen(w) )

////////////////////////////////////////////////////////////////////////
//
//  Constructor
//
SoXtBitmapButton::SoXtBitmapButton(Widget parent, SbBool canSelect)
//
////////////////////////////////////////////////////////////////////////
{
    selectFlag = FALSE;
    selectable = canSelect;
    normalPixmap = selectPixmap = 0;
    
    // Create the push button
    Arg args[8];
    int n = 0;
    XtSetArg(args[n], XmNmarginHeight, 0); n++;
    XtSetArg(args[n], XmNmarginWidth, 0); n++;
    XtSetArg(args[n], XmNshadowThickness, 2); n++;
    XtSetArg(args[n], XmNhighlightThickness, 0); n++;
#ifndef __sgi
    XtSetArg(args[n], XmNtraversalOn, False); n++;
#endif // !__sgi
    widget = XmCreatePushButtonGadget(parent, NULL, args, n);
}

////////////////////////////////////////////////////////////////////////
//
//  Destructor
//
SoXtBitmapButton::~SoXtBitmapButton()
//
////////////////////////////////////////////////////////////////////////
{
    //??? destroy the widget?
}

////////////////////////////////////////////////////////////////////////
//
//  Highlight the pixmap button.
//
//  Usage: public
//
void
SoXtBitmapButton::select(SbBool flag)
//
////////////////////////////////////////////////////////////////////////
{
    if (selectFlag == flag || ! selectable)
	return;
    
    selectFlag = flag;
    
    XtVaSetValues(widget, XmNlabelPixmap, 
	selectFlag ? selectPixmap : normalPixmap, NULL);
}

////////////////////////////////////////////////////////////////////////
//
//  This routine builds the pixmaps (label pixmap and arm pixmap).
//
//  Usage: public
//
void
SoXtBitmapButton::setIcon(unsigned char *icon, int width, int height)
//
////////////////////////////////////////////////////////////////////////
{
    Display	*display = XtDisplay(XtParent(widget));
    Drawable	d = RootWindow(display, SCREEN( XtParent(widget) ));
    Pixel	fg, bg, hl;
    int		depth;

    XtVaGetValues( XtParent(widget), XtNdepth, &depth, NULL );

    // get the color of the push buttons
    // ??? the foreground and background color have to be
    // ??? taken from the parent widget because we are using
    // ??? Gadget push buttons (not Widget push buttons)
    Arg args[8];
    int n = 0;
    XtSetArg(args[n], XmNforeground, &fg); n++;
    XtSetArg(args[n], XmNbackground, &bg); n++;
    XtSetArg(args[n], XmNtopShadowColor, &hl); n++; //??? highlight color
    XtGetValues(XtParent(widget), args, n);
    
    // free the old pixmaps
    if (normalPixmap)
	XFreePixmap(display, normalPixmap);
    if (selectPixmap)
	XFreePixmap(display, selectPixmap);
    normalPixmap = selectPixmap = 0;
    
    // create the pixmaps from the bitmap data (depth 1).
    normalPixmap = XCreatePixmapFromBitmapData(display, d, 
	(char *)icon, width, height, fg, bg, depth);
    if (selectable)
	selectPixmap = XCreatePixmapFromBitmapData(display, d, 
	    (char *)icon, width, height, fg, hl, depth);
    
    // now assign the pixmaps
    n = 0;
    XtSetArg(args[n], XmNlabelType, XmPIXMAP); n++;
    XtSetArg(args[n], XmNlabelPixmap, 
	selectFlag ? selectPixmap : normalPixmap); n++;
    XtSetValues(widget, args, n);
}

#undef SCREEN