Dogcows Code - chaz/openbox/blob - tools/kdetrayproxy/kdetrayproxy.c

   1 #include <X11/Xlib.h>
   2 #include <X11/Xatom.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <sys/select.h>
   7 #include <unistd.h>
   8 #include <sys/time.h>
   9
  10 typedef struct IList {
  11     Window win;
  12     int ignore_unmaps;
  13
  14     struct IList *next;
  15 } IList;
  16
  17 Display *display;
  18 Window root;
  19 Atom winhint;
  20 Atom roothint;
  21 int xfd;
  22 IList *list;
  23
  24 void init();
  25 void eventloop();
  26 void handleevent(XEvent *e);
  27 void addicon(Window win);
  28 void removeicon(Window win, int unmap);
  29 int issystray(Atom *a, int n);
  30 void updatehint();
  31 Window findclient(Window win);
  32 int ignore_errors(Display *d, XErrorEvent *e);
  33 void wait_time(unsigned int t);
  34
  35 int main()
  36 {
  37     init();
  38     updatehint();
  39     eventloop();
  40     return 0;
  41 }
  42
  43 void init()
  44 {
  45     display = XOpenDisplay(NULL);
  46     if (!display) {
  47         fprintf(stderr, "Could not open display\n");
  48         exit(EXIT_FAILURE);
  49     }
  50
  51     xfd = ConnectionNumber(display);
  52
  53     root = RootWindowOfScreen(DefaultScreenOfDisplay(display));
  54
  55     winhint = XInternAtom(display, "_KDE_NET_WM_SYSTEM_TRAY_WINDOW_FOR", 0);
  56     roothint = XInternAtom(display, "_KDE_NET_SYSTEM_TRAY_WINDOWS", 0);
  57
  58     XSelectInput(display, root, SubstructureNotifyMask);
  59 }
  60
  61 void eventloop()
  62 {
  63     XEvent e;
  64     fd_set set;
  65
  66     while (1) {
  67         int event = False;
  68         while (XPending(display)) {
  69             event = True;
  70             XNextEvent(display, &e);
  71             handleevent(&e);
  72         }
  73         if (!event) {
  74             FD_ZERO(&set);
  75             FD_SET(xfd, &set);
  76             select(xfd + 1, &set, NULL, NULL, NULL);
  77         }
  78     }
  79 }
  80
  81 void handleevent(XEvent *e)
  82 {
  83     switch (e->type) {
  84     case MapNotify:
  85     {
  86         Atom *a;
  87         int n;
  88         Window w;
  89
  90         w = findclient(e->xmap.window);
  91         if (w) {
  92             a = XListProperties(display, w, &n);
  93             if (issystray(a, n))
  94                 addicon(w);
  95             XFree(a);
  96         }
  97         break;
  98     }
  99     case UnmapNotify:
 100         removeicon(e->xunmap.window, True);
 101         break;
 102     case DestroyNotify:
 103         removeicon(e->xdestroywindow.window, False);
 104         break;
 105     }
 106 }
 107
 108 int ignore_errors(Display *d, XErrorEvent *e)
 109 {
 110     (void)d; (void)e;
 111     return 1;
 112 }
 113
 114 void addicon(Window win)
 115 {
 116     IList *it;
 117
 118     for (it = list; it; it = it->next)
 119         if (it->win == win) return; /* duplicate */
 120
 121     it = list;
 122     list = malloc(sizeof(IList));
 123     list->win = win;
 124     list->ignore_unmaps = 2;
 125     list->next = it;
 126
 127     XSelectInput(display, win, StructureNotifyMask);
 128     /* if i set the root hint too fast the dock app can fuck itself up */
 129     wait_time(1000000 / 8);
 130     updatehint();
 131 }
 132
 133 void removeicon(Window win, int unmap)
 134 {
 135     IList *it, *last = NULL;
 136     void *old;
 137
 138     for (it = list; it; last = it, it = it->next)
 139         if (it->win == win) {
 140             if (it->ignore_unmaps && unmap) {
 141                 it->ignore_unmaps--;
 142                 return;
 143             }
 144
 145             if (!last)
 146                 list = it->next;
 147             else
 148                 last->next = it->next;
 149
 150             XSync(display, False);
 151             old = XSetErrorHandler(ignore_errors);
 152             XSelectInput(display, win, NoEventMask);
 153             XSync(display, False);
 154             XSetErrorHandler(old);
 155             free(it);
 156
 157             updatehint();
 158         }
 159 }
 160
 161 int issystray(Atom *a, int n)
 162 {
 163     int i, r = False;
 164
 165     for (i = 0; i < n; ++i) {
 166         if (a[i] == winhint) {
 167             r = True;
 168             break;
 169         }
 170     }
 171     return r;
 172 }
 173
 174 void updatehint()
 175 {
 176     IList *it;
 177     int *wins, n, i;
 178
 179     for (it = list, n = 0; it; it = it->next, ++n) ;
 180     if (n) {
 181         wins = malloc(sizeof(int) * n);
 182         for (it = list, i = 0; it; it = it->next, ++i)
 183             wins[i] = it->win;
 184     } else
 185         wins = NULL;
 186     XChangeProperty(display, root, roothint, XA_WINDOW, 32, PropModeReplace,
 187                     (unsigned char*) wins, n);
 188 }
 189
 190 Window findclient(Window win)
 191 {
 192   Window r, *children;
 193   unsigned int n, i;
 194   Atom state = XInternAtom(display, "WM_STATE", True);
 195   Atom ret_type;
 196   int ret_format;
 197   unsigned long ret_items, ret_bytesleft;
 198   unsigned long *prop_return;
 199
 200   XQueryTree(display, win, &r, &r, &children, &n);
 201   for (i = 0; i < n; ++i) {
 202     Window w = findclient(children[i]);
 203     if (w) return w;
 204   }
 205
 206   /* try me */
 207   XGetWindowProperty(display, win, state, 0, 1,
 208                      False, state, &ret_type, &ret_format,
 209                      &ret_items, &ret_bytesleft,
 210                      (unsigned char**) &prop_return);
 211   if (ret_type == None || ret_items < 1)
 212     return None;
 213   return win; /* found it! */
 214 }
 215
 216 void wait_time(unsigned int t)
 217 {
 218     struct timeval time;
 219     time.tv_sec = 0;
 220     time.tv_usec = t;
 221     select(1, NULL, NULL, NULL, &time);
 222 }