src/property.c

   1 /*
   2  * ion/property.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2001.
   5  * See the included file LICENSE for details.
   6  */
   7
   8 #include <X11/Xmd.h>
   9 #include <string.h>
  10
  11 #include "common.h"
  12 #include "property.h"
  13 #include "global.h"
  14
  15
  16 int get_property(Display *dpy, Window win, Atom atom, Atom type,
  17                                  long len, uchar **p)
  18 {
  19         Atom real_type;
  20         int format;
  21         ulong n, extra;
  22         int status;
  23
  24         status=XGetWindowProperty(dpy, win, atom, 0L, len, False,
  25                                                           type, &real_type, &format, &n, &extra, p);
  26
  27         if(status!=Success || *p==NULL)
  28                 return -1;
  29
  30         if(n==0){
  31                 XFree((void*)*p);
  32                 return -1;
  33         }
  34
  35         return n;
  36 }
  37
  38
  39 /* string
  40  */
  41
  42 char *get_string_property(Window win, Atom a, int *nret)
  43 {
  44         char *p;
  45         int n;
  46
  47         n=get_property(wglobal.dpy, win, a, XA_STRING, 100L, (uchar**)&p);
  48
  49         if(nret!=NULL)
  50                 *nret=n;
  51
  52         return (n<=0 ? NULL : p);
  53 }
  54
  55
  56 void set_string_property(Window win, Atom a, const char *value)
  57 {
  58         if(value==NULL){
  59                 XDeleteProperty(wglobal.dpy, win, a);
  60         }else{
  61                 XChangeProperty(wglobal.dpy, win, a, XA_STRING,
  62                                                 8, PropModeReplace, (uchar*)value, strlen(value));
  63         }
  64 }
  65
  66
  67 /* integer
  68  */
  69
  70 bool get_integer_property(Window win, Atom a, int *vret)
  71 {
  72         CARD32 *p=NULL;
  73
  74         if(get_property(wglobal.dpy, win, a, XA_INTEGER, 1L, (uchar**)&p)<=0)
  75                 return FALSE;
  76
  77         *vret=(CARD32)*p;
  78
  79         XFree((void*)p);
  80
  81         return TRUE;
  82 }
  83
  84
  85 void set_integer_property(Window win, Atom a, int value)
  86 {
  87         CARD32 data[2];
  88
  89         data[0]=value;
  90
  91         XChangeProperty(wglobal.dpy, win, a, XA_INTEGER,
  92                                         32, PropModeReplace, (uchar*)data, 1);
  93 }
  94
  95
  96 /* WM_STATE
  97  */
  98
  99 bool get_win_state(Window win, int *state)
 100 {
 101         CARD32 *p=NULL;
 102
 103         if(get_property(wglobal.dpy, win, wglobal.atom_wm_state,
 104                                         wglobal.atom_wm_state, 2L, (uchar**)&p)<=0)
 105                 return FALSE;
 106
 107         *state=(CARD32)*p;
 108
 109         XFree((void*)p);
 110
 111         return TRUE;
 112 }
 113
 114
 115 void set_win_state(Window win, int state)
 116 {
 117         CARD32 data[2];
 118
 119         data[0]=state;
 120         data[1]=None;
 121
 122         XChangeProperty(wglobal.dpy, win,
 123                                         wglobal.atom_wm_state, wglobal.atom_wm_state,
 124                                         32, PropModeReplace, (uchar*)data, 2);
 125 }
 126