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