plugins/focus.c

   1 #include "../kernel/dispatch.h"
   2 #include "../kernel/screen.h"
   3 #include "../kernel/client.h"
   4 #include "../kernel/frame.h"
   5 #include "../kernel/focus.h"
   6 #include "../kernel/stacking.h"
   7 #include "../kernel/openbox.h"
   8
   9 /* config options */
  10 static gboolean follow_mouse = TRUE;
  11 static gboolean warp_on_desk_switch = TRUE;
  12 static gboolean focus_new = FALSE;
  13
  14 static int skip_enter = 0;
  15
  16 static gboolean focus_under_pointer()
  17 {
  18     Window w;
  19     int i, x, y;
  20     guint u;
  21     GList *it;
  22
  23     if (XQueryPointer(ob_display, ob_root, &w, &w, &x, &y, &i, &i, &u))
  24     {
  25         for (it = stacking_list; it != NULL; it = it->next) {
  26             Client *c = it->data;
  27             if (c->desktop == screen_desktop &&
  28                 RECT_CONTAINS(c->frame->area, x, y))
  29                 break;
  30         }
  31         if (it != NULL) {
  32             client_focus(it->data);
  33             return TRUE;
  34         }
  35     }
  36     return FALSE;
  37 }
  38
  39 static void focus_fallback(gboolean switching_desks)
  40 {
  41     GList *it;
  42
  43     for (it = focus_order[screen_desktop]; it != NULL; it = it->next)
  44         if (client_normal(it->data) && client_focus(it->data)) {
  45             if (switching_desks && warp_on_desk_switch) {
  46                 XEvent e;
  47                 Client *c = it->data;
  48
  49                 /* skip the next enter event from the desktop switch so focus
  50                    doesn't skip briefly to what was under the pointer */
  51                 if (XCheckTypedEvent(ob_display, EnterNotify, &e)) {
  52                     XPutBackEvent(ob_display, &e);
  53                     ++skip_enter;
  54                 }
  55
  56                 /* I have to do this warp twice! Otherwise windows dont get
  57                    Enter/Leave events when i warp on a desktop switch! */
  58                 XWarpPointer(ob_display, None, c->window, 0, 0, 0, 0,
  59                              c->area.width / 2, c->area.height / 2);
  60                 ++skip_enter;
  61                 XWarpPointer(ob_display, None, c->window, 0, 0, 0, 0,
  62                              c->area.width / 2, c->area.height / 2);
  63             }
  64             break;
  65         }
  66 }
  67
  68 static void events(ObEvent *e, void *foo)
  69 {
  70     switch (e->type) {
  71     case Event_Client_Mapped:
  72         if (focus_new && client_normal(e->data.c.client))
  73             client_focus(e->data.c.client);
  74         break;
  75
  76     case Event_Client_Unmapped:
  77         if (ob_state == State_Exiting) break;
  78
  79         if (e->data.c.client->focused)
  80             if (!follow_mouse || !focus_under_pointer())
  81                 focus_fallback(FALSE);
  82         break;
  83
  84     case Event_Client_Desktop:
  85         /* focus the next available target if moving from the current
  86            desktop. */
  87         if ((unsigned)e->data.c.num[1] == screen_desktop)
  88             if (!follow_mouse || !focus_under_pointer())
  89                 focus_fallback(FALSE);
  90
  91     case Event_Ob_Desktop:
  92         focus_fallback(TRUE);
  93         break;
  94
  95     case Event_X_EnterNotify:
  96         if (skip_enter)
  97             --skip_enter;
  98         else if (e->data.x.client && client_normal(e->data.x.client))
  99             client_focus(e->data.x.client);
 100         break;
 101
 102     default:
 103         g_assert_not_reached();
 104     }
 105 }
 106
 107 void plugin_startup()
 108 {
 109     dispatch_register(Event_Client_Mapped |
 110                       Event_Ob_Desktop |
 111                       Event_Client_Unmapped |
 112                       Event_X_EnterNotify,
 113                       (EventHandler)events, NULL);
 114 }
 115
 116 void plugin_shutdown()
 117 {
 118     dispatch_register(0, (EventHandler)events, NULL);
 119 }