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 8.10 2001/06/25 15:19:26 skimo Exp $ (Berkeley) $Date: 2001/06/25 15:19:26 $";
  14 #endif /* not lint */
  15
  16 #include <sys/types.h>
  17 #include <sys/queue.h>
  18
  19 #include <X11/X.h>
  20 #include <X11/Xlib.h>
  21 #include <X11/Xatom.h>
  22
  23 #include <bitstring.h>
  24 #include <stdio.h>
  25
  26 #include "../common/common.h"
  27 #include "extern.h"
  28
  29 #if SelfTest
  30 #define _TRACE( x )     printf x
  31 #else
  32 #define _TRACE( x )
  33 #endif
  34
  35 #define Required        10
  36 #define Useful          3
  37 #define Present         (Required+Useful)
  38
  39 static struct {
  40     char        *name;
  41     int         value;
  42 } Atoms[] = {
  43     { "_VUE_SM_WINDOW_INFO",    Required,       /* "vue" */             },
  44     { "_DT_SM_WINDOW_INFO",     Required,       /* "dtwm" */            },
  45     { "_SUN_WM_PROTOCOLS",      Useful,         /* "olwm" */            },
  46     { "_MOTIF_WM_INFO",         Useful,         /* "mwm/dtwm" */        },
  47 };
  48
  49 /*
  50  * is_cde --
  51  *
  52  * When running under CDE (or VUE on HPUX) applications should not define
  53  * fallback colors (or fonts).  The only way to tell is to check the atoms
  54  * attached to the server.  This routine does that.
  55  *
  56  * PUBLIC: int is_cde __P((Display *));
  57  */
  58 int
  59 is_cde(Display *d)
  60 {
  61     int                 i, r, format;
  62     unsigned long       nitems, remaining;
  63     unsigned char       *prop;
  64     Window              root = DefaultRootWindow( d );
  65     Atom                atom, type;
  66     int                 retval = 0;
  67
  68     _TRACE( ( "Root window is 0x%x\n", root ) );
  69
  70     /* create our atoms */
  71     for (i=0; i< (sizeof(Atoms)/sizeof(Atoms[0])); i++ ) {
  72
  73         atom = XInternAtom( d, Atoms[i].name, True );
  74         if ( atom == None ) {
  75             _TRACE( ( "Atom \"%s\" does not exist\n", Atoms[i].name ) );
  76             continue;
  77         }
  78
  79         /* what is the value of the atom? */
  80         r = XGetWindowProperty( d,
  81                                 root,
  82                                 atom,
  83                                 0,
  84                                 1024,
  85                                 False,                  /* do not delete */
  86                                 AnyPropertyType,        /* request type */
  87                                 &type,                  /* actual type */
  88                                 &format,                /* byte size */
  89                                 &nitems,                /* number of items */
  90                                 &remaining,             /* anything left over? */
  91                                 &prop                   /* the data itself */
  92                                 );
  93         if ( r != Success ) {
  94             _TRACE( ( "Atom \"%s\" cannot be converted to string\n", Atoms[i].name ) );
  95             continue;
  96         }
  97
  98         retval += Atoms[i].value;
  99
 100
 101 #if SelfTest
 102         _TRACE( ( "Atom \"%s\"\n", Atoms[i].name ) );
 103
 104         switch ( type ) {
 105             case 0:
 106                 _TRACE( ( "\t does not exist on the root window\n", Atoms[i].name ) );
 107
 108             case XA_ATOM:
 109                 for (j=0; j<nitems; j++) {
 110                     name = XGetAtomName( d, ((Atom *) prop)[j] );
 111                     _TRACE( ( "\t[%d] = \"%s\"\n", j, name ) );
 112                     XFree( name );
 113                 }
 114                 break;
 115
 116             case XA_STRING:
 117                 _TRACE( ( "\t is a string\n", Atoms[i].name ) );
 118                 break;
 119
 120             default:
 121                 _TRACE( ( "\tunknown type %s\n", XGetAtomName( d, type ) ) );
 122                 break;
 123         }
 124 #endif
 125
 126         /* done */
 127         XFree( (caddr_t) prop );
 128
 129     }
 130
 131     _TRACE( ( "retval = %d\n", retval ) );
 132     return retval >= Present;
 133 }
 134
 135 #if SelfTest
 136
 137 main () {
 138     Display *d = XOpenDisplay( 0 );
 139
 140     if ( d == 0 )
 141         printf ( "Could not open display\n" );
 142     else {
 143         printf ( "_vi_is_cde() == %d\n", _vi_is_cde( d ) );
 144         XCloseDisplay( d );
 145     }
 146 }
 147 #endif