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 #include "../kernel/config.h"
   9
  10 void plugin_setup_config()
  11 {
  12     ConfigValue val;
  13
  14     config_def_set(config_def_new("focus.followMouse", Config_Bool,
  15                                   "Focus Follows Mouse",
  16                                   "Focus windows when the mouse pointer "
  17                                   "enters them."));
  18     val.bool = TRUE;
  19     config_set("focus.followMouse", Config_Bool, val);
  20     config_def_set(config_def_new("focus.focusNew", Config_Bool,
  21                                   "Focus New Windows",
  22                                   "Focus windows when they first appear "));
  23     val.bool = TRUE;
  24     config_set("focus.focusNew", Config_Bool, val);
  25 /*
  26     config_def_set(config_def_new("focus.warpOnDeskSwitch", Config_Bool,
  27                                   "Warp Pointer On Desktop Switch",
  28                                   "Warps the pointer to the focused window "
  29                                   "when switching desktops."));
  30     config_set("focus.warpOnDeskSwitch", Config_Bool, FALSE);
  31 */
  32 }
  33
  34 /*static int skip_enter = 0;*/
  35
  36 static gboolean focus_under_pointer()
  37 {
  38     Window w;
  39     int i, x, y;
  40     guint u;
  41     GList *it;
  42
  43     if (XQueryPointer(ob_display, ob_root, &w, &w, &x, &y, &i, &i, &u))
  44     {
  45         for (it = stacking_list; it != NULL; it = it->next) {
  46             Client *c = it->data;
  47             if (c->desktop == screen_desktop &&
  48                 RECT_CONTAINS(c->frame->area, x, y))
  49                 break;
  50         }
  51         if (it != NULL) {
  52             return client_normal(it->data) && client_focus(it->data);
  53         }
  54     }
  55     return FALSE;
  56 }
  57
  58 static void chew_enter_events()
  59 {
  60     XEvent e;
  61
  62     /* XXX... not anymore
  63        skip the next enter event from the desktop switch so focus
  64        doesn't skip briefly to what was under the pointer */
  65
  66     /* kill all enter events from prior to the desktop switch, we
  67        aren't interested in them if we have found our own target
  68        to focus.
  69        XXX this is rude to other plugins...can this be done
  70        better? count the events in the queue? */
  71     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
  72 /*
  73     {
  74         XPutBackEvent(ob_display, &e);
  75         g_message("skip");
  76         ++skip_enter;
  77     }
  78 */
  79 }
  80
  81 static void focus_fallback(gboolean switching_desks)
  82 {
  83     GList *it;
  84
  85     for (it = focus_order[screen_desktop]; it != NULL; it = it->next)
  86         if (client_normal(it->data) && client_focus(it->data)) {
  87             if (switching_desks) {
  88                 Client *c = it->data;
  89
  90                 chew_enter_events();
  91
  92                 if (FALSE /*warp_on_desk_switch*/) {
  93                     /* I have to do this warp twice! Otherwise windows dont get
  94                        Enter/Leave events when i warp on a desktop switch! */
  95                     XWarpPointer(ob_display, None, c->window, 0, 0, 0, 0,
  96                                  c->area.width / 2, c->area.height / 2);
  97                     XWarpPointer(ob_display, None, c->window, 0, 0, 0, 0,
  98                                  c->area.width / 2, c->area.height / 2);
  99                 }
 100             }
 101             break;
 102         }
 103 }
 104
 105 static void focus_desktop()
 106 {
 107     GList *it;
 108
 109     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 110         Client *client = it->data;
 111         if (client->type == Type_Desktop && client->frame->visible)
 112             if (client_focus(client))
 113                 break;
 114     }
 115     chew_enter_events();
 116 }
 117
 118 static void event(ObEvent *e, void *foo)
 119 {
 120     ConfigValue follow_mouse, focus_new;
 121     gboolean r;
 122
 123     r = config_get("focus.followMouse", Config_Bool, &follow_mouse);
 124     g_assert(r);
 125
 126     switch (e->type) {
 127     case Event_Client_Mapped:
 128         r = config_get("focus.focusNew", Config_Bool, &focus_new);
 129         if (focus_new.bool && client_normal(e->data.c.client))
 130             client_focus(e->data.c.client);
 131         break;
 132
 133     case Event_Client_Unmapped:
 134         if (ob_state == State_Exiting) break;
 135
 136         if (client_focused(e->data.c.client))
 137             if (!follow_mouse.bool || !focus_under_pointer())
 138                 focus_fallback(FALSE);
 139         break;
 140
 141     case Event_Client_Desktop:
 142         /* focus the next available target if moving from the current
 143            desktop. */
 144         if ((unsigned)e->data.c.num[1] == screen_desktop)
 145             if (!follow_mouse.bool || !focus_under_pointer())
 146                 focus_fallback(FALSE);
 147
 148     case Event_Ob_Desktop:
 149         focus_fallback(TRUE);
 150         break;
 151
 152     case Event_Ob_ShowDesktop:
 153         if (!e->data.o.num[0]) { /* hiding the desktop, showing the clients */
 154             if (!follow_mouse.bool || !focus_under_pointer())
 155                 focus_fallback(TRUE);
 156         } else /* hiding clients, showing the desktop */
 157             focus_desktop();
 158         break;
 159
 160     case Event_X_EnterNotify:
 161 /*        if (skip_enter) {
 162             if (e->data.x.client != NULL)
 163                 g_message("skipped enter %lx", e->data.x.client->window);
 164             else
 165                 g_message("skipped enter 'root'");
 166             --skip_enter;
 167         }
 168         else*/
 169         if (e->data.x.client != NULL && client_normal(e->data.x.client))
 170             client_focus(e->data.x.client);
 171         break;
 172
 173     default:
 174         g_assert_not_reached();
 175     }
 176 }
 177
 178 void plugin_startup()
 179 {
 180     dispatch_register(Event_Client_Mapped |
 181                       Event_Ob_Desktop |
 182                       Event_Client_Unmapped |
 183                       Event_X_EnterNotify |
 184                       Event_Ob_ShowDesktop,
 185                       (EventHandler)event, NULL);
 186 }
 187
 188 void plugin_shutdown()
 189 {
 190     dispatch_register(0, (EventHandler)event, NULL);
 191 }