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 "group.h"
   6 #include "frame.h"
   7 #include <glib.h>
   8
   9 GList  *stacking_list = NULL;
  10
  11 void stacking_set_list()
  12 {
  13     Window *windows, *win_it;
  14     GList *it;
  15     guint size = g_list_length(stacking_list);
  16
  17     /* on shutdown, don't update the properties, so that we can read it back
  18        in on startup and re-stack the windows as they were before we shut down
  19     */
  20     if (ob_state == State_Exiting) return;
  21
  22     /* create an array of the window ids (from bottom to top,
  23        reverse order!) */
  24     if (size > 0) {
  25         windows = g_new(Window, size);
  26         win_it = windows;
  27         for (it = g_list_last(stacking_list); it != NULL;
  28              it = it->prev, ++win_it)
  29             *win_it = ((Client*)it->data)->window;
  30     } else
  31         windows = NULL;
  32
  33     PROP_SET32A(ob_root, net_client_list_stacking, window, windows, size);
  34
  35     if (windows)
  36         g_free(windows);
  37 }
  38
  39 void stacking_raise(Client *client)
  40 {
  41     Window wins[2];  /* only ever restack 2 windows. */
  42     GList *it;
  43     Client *m;
  44
  45     g_assert(stacking_list != NULL); /* this would be bad */
  46
  47     m = client_find_modal_child(client);
  48     /* if we have a modal child, raise it instead, we'll go along tho later */
  49     if (m) stacking_raise(m);
  50
  51     /* remove the client before looking so we can't run into ourselves */
  52     stacking_list = g_list_remove(stacking_list, client);
  53
  54     /* the stacking list is from highest to lowest */
  55     it = stacking_list;
  56     while (it != NULL) {
  57         Client *c = it->data;
  58         if (client->layer >= c->layer && m != c)
  59             break;
  60         it = it->next;
  61     }
  62
  63     /*
  64       if our new position is the top, we want to stack under the focus_backup.
  65       otherwise, we want to stack under the previous window in the stack.
  66     */
  67     if (it == stacking_list)
  68         wins[0] = focus_backup;
  69     else if (it != NULL)
  70         wins[0] = ((Client*)it->prev->data)->frame->window;
  71     else
  72         wins[0] = ((Client*)g_list_last(stacking_list)->data)->frame->window;
  73     wins[1] = client->frame->window;
  74
  75     stacking_list = g_list_insert_before(stacking_list, it, client);
  76
  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     if (client->modal && client->transient_for) {
  90         if (client->transient_for == TRAN_GROUP) {
  91             /* don't let a modal of the group lower below any other windows
  92                in the group */
  93             for (it = stacking_list; it; it = it->next) {
  94                 GSList *sit;
  95                 Client *c = it->data;
  96
  97                 if (it->data == client) continue;
  98
  99                 for (sit = c->group->members; sit; sit = sit->next)
 100                     if (sit->data == it->data) break;
 101                 if (sit) break; /* got it */
 102             }
 103             if (it == NULL)
 104                 goto lower_no_parent;
 105         } else {
 106             /* don't let a modal window lower below its transient_for */
 107             it = g_list_find(stacking_list, client->transient_for);
 108         }
 109         g_assert(it != NULL);
 110
 111         wins[0] = (it == stacking_list ? focus_backup :
 112                    ((Client*)it->prev->data)->frame->window);
 113         wins[1] = client->frame->window;
 114         if (wins[0] == wins[1]) return; /* already right above the window */
 115
 116         stacking_list = g_list_remove(stacking_list, client);
 117         stacking_list = g_list_insert_before(stacking_list, it, client);
 118     } else {
 119     lower_no_parent:
 120
 121         it = g_list_last(stacking_list);
 122
 123         while (it != stacking_list) {
 124             Client *c = it->data;
 125             if (client->layer <= c->layer)
 126                 break;
 127             it = it->prev;
 128         }
 129         if (it->data == client) return; /* already the bottom, return */
 130
 131         wins[0] = ((Client*)it->data)->frame->window;
 132         wins[1] = client->frame->window;
 133
 134         stacking_list = g_list_remove(stacking_list, client);
 135         stacking_list = g_list_insert_before(stacking_list,
 136                                              it->next, client);
 137     }
 138
 139     XRestackWindows(ob_display, wins, 2);
 140     stacking_set_list();
 141 }
 142