motif/m_cde.c

   1 /*-
   2  * Copyright (c) 1996
   3  *      Rob Zimmermann.  All rights reserved.
   4  * Copyright (c) 1996
   5  *      Keith Bostic.  All rights reserved.
   6  *
   7  * See the LICENSE file for redistribution information.
   8  */
   9
  10 #include "config.h"
  11
  12 #ifndef lint
  13 static const char sccsid[] = "$Id: m_cde.c,v 8.8 1996/12/11 20:56:42 bostic Exp $ (Berkeley) $Date: 1996/12/11 20:56:42 $";
  14 #endif /* not lint */
  15
  16 #include <X11/X.h>
  17 #include <X11/Xlib.h>
  18 #include <X11/Xatom.h>
  19
  20 #include "extern.h"
  21
  22 #if SelfTest
  23 #define _TRACE( x )     printf x
  24 #else
  25 #define _TRACE( x )
  26 #endif
  27
  28 #define Required        10
  29 #define Useful          3
  30 #define Present         (Required+Useful)
  31
  32 static struct {
  33     char        *name;
  34     int         value;
  35 } Atoms[] = {
  36     { "_VUE_SM_WINDOW_INFO",    Required,       /* "vue" */             },
  37     { "_DT_SM_WINDOW_INFO",     Required,       /* "dtwm" */            },
  38     { "_SUN_WM_PROTOCOLS",      Useful,         /* "olwm" */            },
  39     { "_MOTIF_WM_INFO",         Useful,         /* "mwm/dtwm" */        },
  40 };
  41
  42 /*
  43  * is_cde --
  44  *
  45  * When running under CDE (or VUE on HPUX) applications should not define
  46  * fallback colors (or fonts).  The only way to tell is to check the atoms
  47  * attached to the server.  This routine does that.
  48  *
  49  * PUBLIC: int is_cde __P((Display *));
  50  */
  51 int
  52 is_cde(d)
  53         Display *d;
  54 {
  55     int                 i, r, format;
  56     unsigned long       nitems, remaining;
  57     unsigned char       *prop;
  58     Window              root = DefaultRootWindow( d );
  59     Atom                atom, type;
  60     int                 retval = 0;
  61
  62     _TRACE( ( "Root window is 0x%x\n", root ) );
  63
  64     /* create our atoms */
  65     for (i=0; i< (sizeof(Atoms)/sizeof(Atoms[0])); i++ ) {
  66
  67         atom = XInternAtom( d, Atoms[i].name, True );
  68         if ( atom == None ) {
  69             _TRACE( ( "Atom \"%s\" does not exist\n", Atoms[i].name ) );
  70             continue;
  71         }
  72
  73         /* what is the value of the atom? */
  74         r = XGetWindowProperty( d,
  75                                 root,
  76                                 atom,
  77                                 0,
  78                                 1024,
  79                                 False,                  /* do not delete */
  80                                 AnyPropertyType,        /* request type */
  81                                 &type,                  /* actual type */
  82                                 &format,                /* byte size */
  83                                 &nitems,                /* number of items */
  84                                 &remaining,             /* anything left over? */
  85                                 &prop                   /* the data itself */
  86                                 );
  87         if ( r != Success ) {
  88             _TRACE( ( "Atom \"%s\" cannot be converted to string\n", Atoms[i].name ) );
  89             continue;
  90         }
  91
  92         retval += Atoms[i].value;
  93
  94
  95 #if SelfTest
  96         _TRACE( ( "Atom \"%s\"\n", Atoms[i].name ) );
  97
  98         switch ( type ) {
  99             case 0:
 100                 _TRACE( ( "\t does not exist on the root window\n", Atoms[i].name ) );
 101
 102             case XA_ATOM:
 103                 for (j=0; j<nitems; j++) {
 104                     name = XGetAtomName( d, ((Atom *) prop)[j] );
 105                     _TRACE( ( "\t[%d] = \"%s\"\n", j, name ) );
 106                     XFree( name );
 107                 }
 108                 break;
 109
 110             case XA_STRING:
 111                 _TRACE( ( "\t is a string\n", Atoms[i].name ) );
 112                 break;
 113
 114             default:
 115                 _TRACE( ( "\tunknown type %s\n", XGetAtomName( d, type ) ) );
 116                 break;
 117         }
 118 #endif
 119
 120         /* done */
 121         XFree( (caddr_t) prop );
 122
 123     }
 124
 125     _TRACE( ( "retval = %d\n", retval ) );
 126     return retval >= Present;
 127 }
 128
 129 #if SelfTest
 130
 131 main () {
 132     Display *d = XOpenDisplay( 0 );
 133
 134     if ( d == 0 )
 135         printf ( "Could not open display\n" );
 136     else {
 137         printf ( "_vi_is_cde() == %d\n", _vi_is_cde( d ) );
 138         XCloseDisplay( d );
 139     }
 140 }
 141 #endif