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 8.11 2003/11/05 17:09:58 skimo Exp $ (Berkeley) $Date: 2003/11/05 17:09:58 $";
  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 #undef LOCK_SUCCESS
  27 #include "../common/common.h"
  28 #include "extern.h"
  29
  30 #if SelfTest
  31 #define _TRACE( x )     printf x
  32 #else
  33 #define _TRACE( x )
  34 #endif
  35
  36 #define Required        10
  37 #define Useful          3
  38 #define Present         (Required+Useful)
  39
  40 static struct {
  41     char        *name;
  42     int         value;
  43 } Atoms[] = {
  44     { "_VUE_SM_WINDOW_INFO",    Required,       /* "vue" */             },
  45     { "_DT_SM_WINDOW_INFO",     Required,       /* "dtwm" */            },
  46     { "_SUN_WM_PROTOCOLS",      Useful,         /* "olwm" */            },
  47     { "_MOTIF_WM_INFO",         Useful,         /* "mwm/dtwm" */        },
  48 };
  49
  50 /*
  51  * is_cde --
  52  *
  53  * When running under CDE (or VUE on HPUX) applications should not define
  54  * fallback colors (or fonts).  The only way to tell is to check the atoms
  55  * attached to the server.  This routine does that.
  56  *
  57  * PUBLIC: int is_cde __P((Display *));
  58  */
  59 int
  60 is_cde(Display *d)
  61 {
  62     int                 i, r, format;
  63     unsigned long       nitems, remaining;
  64     unsigned char       *prop;
  65     Window              root = DefaultRootWindow( d );
  66     Atom                atom, type;
  67     int                 retval = 0;
  68
  69     _TRACE( ( "Root window is 0x%x\n", root ) );
  70
  71     /* create our atoms */
  72     for (i=0; i< (sizeof(Atoms)/sizeof(Atoms[0])); i++ ) {
  73
  74         atom = XInternAtom( d, Atoms[i].name, True );
  75         if ( atom == None ) {
  76             _TRACE( ( "Atom \"%s\" does not exist\n", Atoms[i].name ) );
  77             continue;
  78         }
  79
  80         /* what is the value of the atom? */
  81         r = XGetWindowProperty( d,
  82                                 root,
  83                                 atom,
  84                                 0,
  85                                 1024,
  86                                 False,                  /* do not delete */
  87                                 AnyPropertyType,        /* request type */
  88                                 &type,                  /* actual type */
  89                                 &format,                /* byte size */
  90                                 &nitems,                /* number of items */
  91                                 &remaining,             /* anything left over? */
  92                                 &prop                   /* the data itself */
  93                                 );
  94         if ( r != Success ) {
  95             _TRACE( ( "Atom \"%s\" cannot be converted to string\n", Atoms[i].name ) );
  96             continue;
  97         }
  98
  99         retval += Atoms[i].value;
 100
 101
 102 #if SelfTest
 103         _TRACE( ( "Atom \"%s\"\n", Atoms[i].name ) );
 104
 105         switch ( type ) {
 106             case 0:
 107                 _TRACE( ( "\t does not exist on the root window\n", Atoms[i].name ) );
 108
 109             case XA_ATOM:
 110                 for (j=0; j<nitems; j++) {
 111                     name = XGetAtomName( d, ((Atom *) prop)[j] );
 112                     _TRACE( ( "\t[%d] = \"%s\"\n", j, name ) );
 113                     XFree( name );
 114                 }
 115                 break;
 116
 117             case XA_STRING:
 118                 _TRACE( ( "\t is a string\n", Atoms[i].name ) );
 119                 break;
 120
 121             default:
 122                 _TRACE( ( "\tunknown type %s\n", XGetAtomName( d, type ) ) );
 123                 break;
 124         }
 125 #endif
 126
 127         /* done */
 128         XFree( (caddr_t) prop );
 129
 130     }
 131
 132     _TRACE( ( "retval = %d\n", retval ) );
 133     return retval >= Present;
 134 }
 135
 136 #if SelfTest
 137
 138 main () {
 139     Display *d = XOpenDisplay( 0 );
 140
 141     if ( d == 0 )
 142         printf ( "Could not open display\n" );
 143     else {
 144         printf ( "_vi_is_cde() == %d\n", _vi_is_cde( d ) );
 145         XCloseDisplay( d );
 146     }
 147 }
 148 #endif