Dogcows Code - chaz/tint2/blob - src/systray/icons.c

   1 #include "icons.h"
   2 #include "net.h"
   3 #include <assert.h>
   4 #include <stdlib.h>
   5
   6 gboolean error;
   7 int window_error_handler(Display *d, XErrorEvent *e)
   8 {
   9   d=d;e=e;
  10   if (e->error_code == BadWindow) {
  11     error = TRUE;
  12   } else {
  13     g_printerr("X ERROR NOT BAD WINDOW!\n");
  14     abort();
  15   }
  16   return 0;
  17 }
  18
  19
  20 gboolean icon_swallow(TrayWindow *traywin)
  21 {
  22   XErrorHandler old;
  23
  24   error = FALSE;
  25   old = XSetErrorHandler(window_error_handler);
  26   XReparentWindow(display, traywin->id, win, 0, 0);
  27   XSync(display, False);
  28   XSetErrorHandler(old);
  29
  30   return !error;
  31 }
  32
  33
  34 /*
  35   The traywin must have its id and type set.
  36 */
  37 gboolean icon_add(Window id, TrayWindowType type)
  38 {
  39   TrayWindow *traywin;
  40
  41   assert(id);
  42   assert(type);
  43
  44   if (wmaker) {
  45     /* do we have room in our window for another icon? */
  46     unsigned int max = (width / icon_size) * (height / icon_size);
  47     if (g_slist_length(icons) >= max)
  48       return FALSE; /* no room, sorry! REJECTED! */
  49   }
  50
  51   traywin = g_new0(TrayWindow, 1);
  52   traywin->type = type;
  53   traywin->id = id;
  54
  55   if (!icon_swallow(traywin)) {
  56     g_free(traywin);
  57     return FALSE;
  58   }
  59
  60   /* find the positon for the systray app window */
  61   if (!wmaker) {
  62     traywin->x = border + (horizontal ? width : 0);
  63     traywin->y = border + (horizontal ? 0 : height);
  64   } else {
  65     int count = g_slist_length(icons);
  66     traywin->x = border + ((width % icon_size) / 2) +
  67       (count % (width / icon_size)) * icon_size;
  68     traywin->y = border + ((height % icon_size) / 2) +
  69       (count / (height / icon_size)) * icon_size;
  70   }
  71
  72   /* add the new icon to the list */
  73   icons = g_slist_append(icons, traywin);
  74
  75   /* watch for the icon trying to resize itself! BAD ICON! BAD! */
  76   XSelectInput(display, traywin->id, StructureNotifyMask);
  77
  78   /* position and size the icon window */
  79   XMoveResizeWindow(display, traywin->id,
  80                     traywin->x, traywin->y, icon_size, icon_size);
  81
  82   /* resize our window so that the new window can fit in it */
  83   fix_geometry();
  84
  85   /* flush before clearing, otherwise the clear isn't effective. */
  86   XFlush(display);
  87   /* make sure the new child will get the right stuff in its background
  88      for ParentRelative. */
  89   XClearWindow(display, win);
  90
  91   /* show the window */
  92   XMapRaised(display, traywin->id);
  93
  94   return TRUE;
  95 }
  96
  97
  98 void icon_remove(GSList *node)
  99 {
 100   XErrorHandler old;
 101   TrayWindow *traywin = node->data;
 102   Window traywin_id = traywin->id;
 103
 104   if (traywin->type == NET)
 105     net_icon_remove(traywin);
 106
 107   XSelectInput(display, traywin->id, NoEventMask);
 108
 109   /* remove it from our list */
 110   g_free(node->data);
 111   icons = g_slist_remove_link(icons, node);
 112
 113   /* reparent it to root */
 114   error = FALSE;
 115   old = XSetErrorHandler(window_error_handler);
 116   XReparentWindow(display, traywin_id, root, 0, 0);
 117   XSync(display, False);
 118   XSetErrorHandler(old);
 119
 120   reposition_icons();
 121   fix_geometry();
 122 }