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