From: gnb@duke.bby.com.au (Gregory N. Bond)
Newsgroups: comp.windows.x
Subject: Re: colored icons, possible?
Date: 17 Aug 92 04:44:13 GMT
Organization: Burdett, Buckeridge & Young, Melbourne, Australia

>>>>> On 4 Aug 92 18:45:48 GMT, sommer@conware.de (Juergen Sommer) said:
Juergen> is there a way to color icons with more than 2 colors? 
Juergen> Preferably with xview or Xt.

Get and install the XPM library.  Then use this code to set the Icon
window for your top level shell:

Greg.

--------- cut here ----
static char RCSId[] = "$Header: /a/baby/export/home/gnb/RCS/XpmMakeIcon.c,v 1.2 1992/05/13 06:26:01 shn Exp $";

/*
 * Given a char ** containing an xpm icon, make the current icon
 * window match that pixmap.
 * 
 * $Log: XpmMakeIcon.c,v $
 * Revision 1.2  1992/05/13  06:26:01  shn
 * New home: /usr/local/bby/src/lib/xutils
 *
 * Revision 1.1  1992/02/12  04:18:21  gnb
 * Initial revision
 *
 * 
 */


#include <stdio.h>
#ifdef __STDC__
#include <stdlib.h>
#else
#define const /**/
#endif 
#include <strings.h>

#include <X11/Intrinsic.h>
#include <X11/Shell.h>		/* for the iconWindow define */
#include <X11/xpm.h>
#include "xutils.h"

extern void bzero P((void *, size_t));

/*
 * Set the icon from the given pixmap and attributes.  Make sure the
 * icon window is big enough.  Free the resources we sucked in in the
 * process.  Guts taken from the SetIconPixmap routine, stolen from
 * Heller pp 588-589.
 */
static void set_icon P((Widget, Pixmap, XpmAttributes *));
static void set_icon(shell, pm, attr)
Widget shell;
Pixmap pm;
XpmAttributes *attr;
{
     Window window;
     Display *dpy = XtDisplay(shell);
     Screen *scr = XtScreen(shell);
     
     /* Get the current icon window (if any) */
     XtVaGetValues(shell, XtNiconWindow, &window, NULL);

     if (!window) {
	  /* Create one.  as big as the image requires. */
	  window = XCreateSimpleWindow(dpy, RootWindowOfScreen(scr),
				       0, 0, attr->width,
				       attr->height, (unsigned)0,
				       CopyFromParent, CopyFromParent);
	  if (window)
	       /* Now tell the shell this is our iconWindow */
	       XtVaSetValues(shell, XtNiconWindow, window, NULL);
     } else {
	  /* Make the window the correct size */
	  XResizeWindow(dpy, window, attr->width, attr->height); 
     }

     if (!window) {
	  /*
	   * Can't create window etc; rely instead on the iconPixmap
	   * resource - which hopefully wont get a Bad_Match
	   */
	  XtVaSetValues(shell, XtNiconPixmap, pm, NULL);
     } else {
	  /* 
	   * Set the window's background pixmap to out image, then
	   * refresh it
	   */
	  XSetWindowBackgroundPixmap(dpy, window, pm);
	  XClearWindow(dpy, window);
     }
     
     /* Now delete all the allocated stuff */
     XFreePixmap(dpy, pm);
     XpmFreeAttributes(attr);
}


/*
 * Two ways of accessing it - data and file
 */

void XpmMakeIconFromData(shell, xpm_data)
Widget shell;
char **xpm_data; 
{
     int ret;
     Pixmap pm;
     XpmAttributes attr;

     if (!XtWindow(shell)) XtRealizeWidget(shell);
     
     bzero(&attr, sizeof (XpmAttributes)); 
     ret = XpmCreatePixmapFromData(XtDisplay(shell), XtWindow(shell),
				   xpm_data, &pm, NULL, &attr);
     if (ret == XpmSuccess) 
	  set_icon(shell, pm, &attr); 
}

void XpmMakeIconFromFile(shell, xpm_file)
Widget shell;
const char *xpm_file;
{
     int ret = *RCSId;
     Pixmap pm;
     XpmAttributes attr;

     if (!XtWindow(shell)) XtRealizeWidget(shell);
     
     bzero((char *)&attr, sizeof (XpmAttributes)); 
     ret = XpmReadFileToPixmap(XtDisplay(shell),
			       XtWindow(shell), xpm_file,
			       &pm, NULL, &attr);
     if (ret == XpmSuccess) 
	  set_icon(shell, pm, &attr); 
}

 
---- cut here --------
--
Gregory Bond <gnb@bby.com.au> Burdett Buckeridge & Young Ltd Melbourne Australia
``USL has never sold long distance.  You're going after the wrong men in black 
  hats.  (Or, in the case of Plan 9, black space suits)'' - Tom Limoncelli
Newsgroups: comp.windows.x