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

   1 #include "openbox.h"
   2 #include "prop.h"
   3 #include "screen.h"
   4 #include "focus.h"
   5 #include "client.h"
   6 #include "group.h"
   7 #include "frame.h"
   8 #include "window.h"
   9
  10 GList  *stacking_list = NULL;
  11
  12 void stacking_set_list()
  13 {
  14     Window *windows = NULL;
  15     GList *it;
  16     guint i = 0;
  17
  18     /* on shutdown, don't update the properties, so that we can read it back
  19        in on startup and re-stack the windows as they were before we shut down
  20     */
  21     if (ob_state() == OB_STATE_EXITING) return;
  22
  23     /* create an array of the window ids (from bottom to top,
  24        reverse order!) */
  25     if (stacking_list) {
  26         windows = g_new(Window, g_list_length(stacking_list));
  27         for (it = g_list_last(stacking_list); it; it = g_list_previous(it)) {
  28             if (WINDOW_IS_CLIENT(it->data))
  29                 windows[i++] = WINDOW_AS_CLIENT(it->data)->window;
  30         }
  31     }
  32
  33     PROP_SETA32(RootWindow(ob_display, ob_screen),
  34                 net_client_list_stacking, window, (guint32*)windows, i);
  35
  36     g_free(windows);
  37 }
  38
  39 static void do_restack(GList *wins, GList *before)
  40 {
  41     GList *it, *next;
  42     Window *win;
  43     int i;
  44
  45 #ifdef DEBUG
  46     /* pls only restack stuff in the same layer at a time */
  47     for (it = wins; it; it = next) {
  48         next = g_list_next(it);
  49         if (!next) break;
  50         g_assert (window_layer(it->data) == window_layer(next->data));
  51     }
  52     if (before)
  53         g_assert(window_layer(it->data) >= window_layer(before->data));
  54 #endif
  55
  56     win = g_new(Window, g_list_length(wins) + 1);
  57
  58     if (before == stacking_list)
  59         win[0] = screen_support_win;
  60     else if (!before)
  61         win[0] = window_top(g_list_last(stacking_list)->data);
  62     else
  63         win[0] = window_top(g_list_previous(before)->data);
  64
  65     for (i = 1, it = wins; it; ++i, it = g_list_next(it)) {
  66         win[i] = window_top(it->data);
  67         g_assert(win[i] != None); /* better not call stacking shit before
  68                                      setting your top level window value */
  69         stacking_list = g_list_insert_before(stacking_list, before, it->data);
  70     }
  71
  72 #ifdef DEBUG
  73     /* some debug checking of the stacking list's order */
  74     for (it = stacking_list; ; it = next) {
  75         next = g_list_next(it);
  76         if (!next) break;
  77         g_assert(window_layer(it->data) >= window_layer(next->data));
  78     }
  79 #endif
  80
  81     XRestackWindows(ob_display, win, i);
  82     g_free(win);
  83
  84     stacking_set_list();
  85 }
  86
  87 static void do_raise(GList *wins)
  88 {
  89     GList *it;
  90     GList *layer[OB_NUM_STACKING_LAYERS] = {NULL};
  91     int i;
  92
  93     for (it = wins; it; it = g_list_next(it)) {
  94         ObStackingLayer l;
  95
  96         l = window_layer(it->data);
  97         layer[l] = g_list_append(layer[l], it->data);
  98     }
  99
 100     it = stacking_list;
 101     for (i = OB_NUM_STACKING_LAYERS - 1; i >= 0; --i) {
 102         if (layer[i]) {
 103             for (; it; it = g_list_next(it)) {
 104                 /* look for the top of the layer */
 105                 if (window_layer(it->data) <= (ObStackingLayer) i)
 106                     break;
 107             }
 108             do_restack(layer[i], it);
 109             g_list_free(layer[i]);
 110         }
 111     }
 112 }
 113
 114 static void do_lower(GList *wins)
 115 {
 116     GList *it;
 117     GList *layer[OB_NUM_STACKING_LAYERS] = {NULL};
 118     int i;
 119
 120     for (it = wins; it; it = g_list_next(it)) {
 121         ObStackingLayer l;
 122
 123         l = window_layer(it->data);
 124         layer[l] = g_list_append(layer[l], it->data);
 125     }
 126
 127     it = stacking_list;
 128     for (i = OB_NUM_STACKING_LAYERS - 1; i >= 0; --i) {
 129         if (layer[i]) {
 130             for (; it; it = g_list_next(it)) {
 131                 /* look for the top of the next layer down */
 132                 if (window_layer(it->data) < (ObStackingLayer) i)
 133                     break;
 134             }
 135             do_restack(layer[i], it);
 136             g_list_free(layer[i]);
 137         }
 138     }
 139 }
 140
 141 static GList *pick_windows(ObClient *top, ObClient *selected, gboolean raise)
 142 {
 143     GList *ret = NULL;
 144     GList *it, *next, *prev;
 145     GSList *sit;
 146     int i, n;
 147     GList *modals = NULL;
 148     GList *trans = NULL;
 149     GList *modal_sel = NULL; /* the selected guys if modal */
 150     GList *trans_sel = NULL; /* the selected guys if not */
 151
 152     /* remove first so we can't run into ourself */
 153     if ((it = g_list_find(stacking_list, top)))
 154         stacking_list = g_list_delete_link(stacking_list, it);
 155     else
 156         return NULL;
 157
 158     i = 0;
 159     n = g_slist_length(top->transients);
 160     for (it = stacking_list; i < n && it; it = next) {
 161         prev = g_list_previous(it);
 162         next = g_list_next(it);
 163
 164         if ((sit = g_slist_find(top->transients, it->data))) {
 165             ObClient *c = sit->data;
 166             gboolean sel_child;
 167
 168             ++i;
 169
 170             if (c == selected)
 171                 sel_child = TRUE;
 172             else
 173                 sel_child = client_search_transient(c, selected) != NULL;
 174
 175             if (!c->modal) {
 176                 if (!sel_child) {
 177                     trans = g_list_concat(trans,
 178                                           pick_windows(c, selected, raise));
 179                 } else {
 180                     trans_sel = g_list_concat(trans_sel,
 181                                                  pick_windows(c, selected,
 182                                                               raise));
 183                 }
 184             } else {
 185                 if (!sel_child) {
 186                     modals = g_list_concat(modals,
 187                                            pick_windows(c, selected, raise));
 188                 } else {
 189                     modal_sel = g_list_concat(modal_sel,
 190                                                  pick_windows(c, selected,
 191                                                               raise));
 192                 }
 193             }
 194             /* if we dont have a prev then start back at the beginning,
 195                otherwise skip back to the prev's next */
 196             next = prev ? g_list_next(prev) : stacking_list;
 197         }
 198     }
 199
 200     ret = g_list_concat((raise ? modal_sel : modals),
 201                         (raise ? modals : modal_sel));
 202
 203     ret = g_list_concat(ret, (raise ? trans_sel : trans));
 204     ret = g_list_concat(ret, (raise ? trans : trans_sel));
 205
 206
 207     /* add itself */
 208     ret = g_list_append(ret, top);
 209
 210     return ret;
 211 }
 212
 213 static GList *pick_group_windows(ObClient *top, ObClient *selected,
 214                                  gboolean raise)
 215 {
 216     GList *ret = NULL;
 217     GList *it, *next, *prev;
 218     GSList *sit;
 219     int i, n;
 220
 221     /* add group members in their stacking order */
 222     if (top->group) {
 223         i = 0;
 224         n = g_slist_length(top->group->members) - 1;
 225         for (it = stacking_list; i < n && it; it = next) {
 226             prev = g_list_previous(it);
 227             next = g_list_next(it);
 228
 229             if ((sit = g_slist_find(top->group->members, it->data))) {
 230                 ++i;
 231                 ret = g_list_concat(ret,
 232                                     pick_windows(sit->data, selected, raise));
 233                 /* if we dont have a prev then start back at the beginning,
 234                    otherwise skip back to the prev's next */
 235                 next = prev ? g_list_next(prev) : stacking_list;
 236             }
 237         }
 238     }
 239     return ret;
 240 }
 241
 242 void stacking_raise(ObWindow *window)
 243 {
 244     GList *wins;
 245
 246     if (WINDOW_IS_CLIENT(window)) {
 247         ObClient *c;
 248         ObClient *selected;
 249         selected = WINDOW_AS_CLIENT(window);
 250         c = client_search_top_transient(selected);
 251         wins = pick_windows(c, selected, TRUE);
 252         /*wins = g_list_concat(wins, pick_group_windows(c, selected, TRUE));*/
 253     } else {
 254         wins = g_list_append(NULL, window);
 255         stacking_list = g_list_remove(stacking_list, window);
 256     }
 257     do_raise(wins);
 258     g_list_free(wins);
 259 }
 260
 261 void stacking_lower(ObWindow *window)
 262 {
 263     GList *wins;
 264
 265     if (WINDOW_IS_CLIENT(window)) {
 266         ObClient *c;
 267         ObClient *selected;
 268         selected = WINDOW_AS_CLIENT(window);
 269         c = client_search_top_transient(selected);
 270         wins = pick_windows(c, selected, FALSE);
 271         /*wins = g_list_concat(pick_group_windows(c, selected, FALSE), wins);*/
 272     } else {
 273         wins = g_list_append(NULL, window);
 274         stacking_list = g_list_remove(stacking_list, window);
 275     }
 276     do_lower(wins);
 277     g_list_free(wins);
 278 }
 279
 280 void stacking_below(ObWindow *window, ObWindow *below)
 281 {
 282     GList *wins, *before;
 283
 284     if (window_layer(window) != window_layer(below))
 285         return;
 286
 287     wins = g_list_append(NULL, window);
 288     stacking_list = g_list_remove(stacking_list, window);
 289     before = g_list_next(g_list_find(stacking_list, below));
 290     do_restack(wins, before);
 291     g_list_free(wins);
 292 }
 293
 294 void stacking_add(ObWindow *win)
 295 {
 296     ObStackingLayer l;
 297     GList *wins;
 298
 299     g_assert(screen_support_win != None); /* make sure I dont break this in the
 300                                        future */
 301
 302     l = window_layer(win);
 303     wins = g_list_append(NULL, win); /* list of 1 element */
 304
 305     stacking_list = g_list_append(stacking_list, win);
 306     stacking_raise(win);
 307 }
 308
 309 void stacking_add_nonintrusive(ObWindow *win)
 310 {
 311     ObClient *client;
 312     ObClient *parent = NULL;
 313     GList *it_before = NULL;
 314
 315     if (!WINDOW_IS_CLIENT(win)) {
 316         stacking_add(win); /* no special rules for others */
 317         return;
 318     }
 319
 320     client = WINDOW_AS_CLIENT(win);
 321
 322     /* insert above its highest parent */
 323     if (client->transient_for) {
 324         if (client->transient_for != OB_TRAN_GROUP) {
 325             parent = client->transient_for;
 326         } else {
 327             GSList *sit;
 328             GList *it;
 329
 330             if (client->group)
 331                 for (it = stacking_list; !parent && it; it = it->next) {
 332                     if ((sit = g_slist_find(client->group->members, it->data)))
 333                 for (sit = client->group->members; !parent && sit;
 334                      sit = sit->next) {
 335                     ObClient *c = sit->data;
 336                     /* checking transient_for prevents infinate loops! */
 337                     if (sit->data == it->data && !c->transient_for)
 338                         parent = it->data;
 339                 }
 340             }
 341         }
 342     }
 343
 344     if (!(it_before = g_list_find(stacking_list, parent))) {
 345         /* no parent to put above, try find the focused client to go
 346            under */
 347         if (focus_client && focus_client->layer == client->layer) {
 348             if ((it_before = g_list_find(stacking_list, focus_client)))
 349                 it_before = it_before->next;
 350         }
 351     }
 352     if (!it_before) {
 353         /* out of ideas, just add it normally... */
 354         stacking_add(win);
 355     } else {
 356         GList *wins = g_list_append(NULL, win);
 357         do_restack(wins, it_before);
 358         g_list_free(wins);
 359     }
 360 }