Dogcows Code - chaz/openbox/blob - openbox/stacking.c

   1 #include "openbox.h"
   2 #include "prop.h"
   3 #include "focus.h"
   4 #include "client.h"
   5 #include "frame.h"
   6 #include <glib.h>
   7
   8 GList  *stacking_list = NULL;
   9
  10 void stacking_set_list()
  11 {
  12     Window *windows, *win_it;
  13     GList *it;
  14     guint size = g_list_length(stacking_list);
  15
  16     /* on shutdown, don't update the properties, so that we can read it back
  17        in on startup and re-stack the windows as they were before we shut down
  18     */
  19     if (ob_state == State_Exiting) return;
  20
  21     /* create an array of the window ids (from bottom to top,
  22        reverse order!) */
  23     if (size > 0) {
  24         windows = g_new(Window, size);
  25         win_it = windows;
  26         for (it = g_list_last(stacking_list); it != NULL;
  27              it = it->prev, ++win_it)
  28             *win_it = ((Client*)it->data)->window;
  29     } else
  30         windows = NULL;
  31
  32     PROP_SET32A(ob_root, net_client_list_stacking, window, windows, size);
  33
  34     if (windows)
  35         g_free(windows);
  36 }
  37
  38 void stacking_raise(Client *client)
  39 {
  40     Window wins[2];  /* only ever restack 2 windows. */
  41     GList *it;
  42     Client *m;
  43
  44     g_assert(stacking_list != NULL); /* this would be bad */
  45
  46     m = client_find_modal_child(client);
  47     /* if we have a modal child, raise it instead, we'll go along tho later */
  48     if (m) stacking_raise(m);
  49
  50     /* remove the client before looking so we can't run into ourselves */
  51     stacking_list = g_list_remove(stacking_list, client);
  52
  53     /* the stacking list is from highest to lowest */
  54     it = stacking_list;
  55     while (it != NULL) {
  56         Client *c = it->data;
  57         if (client->layer >= c->layer && m != c)
  58             break;
  59         it = it->next;
  60     }
  61
  62     /*
  63       if our new position is the top, we want to stack under the focus_backup.
  64       otherwise, we want to stack under the previous window in the stack.
  65     */
  66     if (it == stacking_list)
  67         wins[0] = focus_backup;
  68     else if (it != NULL)
  69         wins[0] = ((Client*)it->prev->data)->frame->window;
  70     else
  71         wins[0] = ((Client*)g_list_last(stacking_list)->data)->frame->window;
  72     wins[1] = client->frame->window;
  73
  74     stacking_list = g_list_insert_before(stacking_list, it, client);
  75
  76     if (client->frame.visible)
  77         XRestackWindows(ob_display, wins, 2);
  78
  79     stacking_set_list();
  80 }
  81
  82 void stacking_lower(Client *client)
  83 {
  84     Window wins[2];  /* only ever restack 2 windows. */
  85     GList *it;
  86
  87     g_assert(stacking_list != NULL); /* this would be bad */
  88
  89     it = g_list_last(stacking_list);
  90
  91     if (client->modal && client->transient_for) {
  92         /* don't let a modal window lower below its transient_for */
  93         it = g_list_find(stacking_list, client->transient_for);
  94         g_assert(it != NULL);
  95
  96         wins[0] = (it == stacking_list ? focus_backup :
  97                    ((Client*)it->prev->data)->frame->window);
  98         wins[1] = client->frame->window;
  99         if (wins[0] == wins[1]) return; /* already right above the window */
 100
 101         stacking_list = g_list_remove(stacking_list, client);
 102         stacking_list = g_list_insert_before(stacking_list, it, client);
 103     } else {
 104         while (it != stacking_list) {
 105             Client *c = it->data;
 106             if (client->layer <= c->layer)
 107                 break;
 108             it = it->prev;
 109         }
 110         if (it->data == client) return; /* already the bottom, return */
 111
 112         wins[0] = ((Client*)it->data)->frame->window;
 113         wins[1] = client->frame->window;
 114
 115         stacking_list = g_list_remove(stacking_list, client);
 116         stacking_list = g_list_insert_before(stacking_list,
 117                                              it->next, client);
 118     }
 119
 120     if (client->frame.visible)
 121         XRestackWindows(ob_display, wins, 2);
 122     stacking_set_list();
 123 }
 124