]> git.lizzy.rs Git - bspwm.git/blobdiff - tree.c
Don't try to print pointers as strings
[bspwm.git] / tree.c
diff --git a/tree.c b/tree.c
index 860eb7b702bc2f8c5c04e3faca348ed1156e7bdb..f30343678bbfdbdd3eee5a525c4794d8c651e490 100644 (file)
--- a/tree.c
+++ b/tree.c
@@ -1,16 +1,15 @@
-/*
- * Copyright (c) 2012-2014, Bastien Dejean
+/* Copyright (c) 2012, Bastien Dejean
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
- * 
+ *
  * 1. Redistributions of source code must retain the above copyright notice, this
  *    list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * 
- * The views and conclusions contained in the software and documentation are those
- * of the authors and should not be interpreted as representing official policies,
- * either expressed or implied, of the FreeBSD Project.
  */
 
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
 #include <float.h>
 #include <limits.h>
 #include "bspwm.h"
@@ -35,6 +33,8 @@
 #include "history.h"
 #include "monitor.h"
 #include "query.h"
+#include "geometry.h"
+#include "subscribe.h"
 #include "settings.h"
 #include "stack.h"
 #include "window.h"
 
 void arrange(monitor_t *m, desktop_t *d)
 {
-       if (d->root == NULL)
+       if (d->root == NULL) {
                return;
+       }
+
+       layout_t last_layout = d->layout;
 
-       PRINTF("arrange %s %s\n", m->name, d->name);
+       if (single_monocle && tiled_count(d->root) == 1) {
+               d->layout = LAYOUT_MONOCLE;
+       }
 
        xcb_rectangle_t rect = m->rectangle;
-       int wg = (gapless_monocle && d->layout == LAYOUT_MONOCLE ? 0 : d->window_gap);
-       rect.x += m->left_padding + d->left_padding + wg;
-       rect.y += m->top_padding + d->top_padding + wg;
-       rect.width -= m->left_padding + d->left_padding + d->right_padding + m->right_padding + wg;
-       rect.height -= m->top_padding + d->top_padding + d->bottom_padding + m->bottom_padding + wg;
+
+       if (!paddingless_monocle || d->layout != LAYOUT_MONOCLE) {
+               rect.x += m->left_padding + d->left_padding;
+               rect.y += m->top_padding + d->top_padding;
+               rect.width -= m->left_padding + d->left_padding + d->right_padding + m->right_padding;
+               rect.height -= m->top_padding + d->top_padding + d->bottom_padding + m->bottom_padding;
+       }
+
+       if (!gapless_monocle || d->layout != LAYOUT_MONOCLE) {
+               rect.x += d->window_gap;
+               rect.y += d->window_gap;
+               rect.width -= d->window_gap;
+               rect.height -= d->window_gap;
+       }
+
        apply_layout(m, d, d->root, rect, rect);
+
+       d->layout = last_layout;
 }
 
 void apply_layout(monitor_t *m, desktop_t *d, node_t *n, xcb_rectangle_t rect, xcb_rectangle_t root_rect)
 {
-       if (n == NULL)
+       if (n == NULL) {
                return;
+       }
 
        n->rectangle = rect;
 
+       if (pointer_follows_focus && mon->desk->focus == n && frozen_pointer->action == ACTION_NONE) {
+               xcb_rectangle_t r = rect;
+               r.width -= d->window_gap;
+               r.height -= d->window_gap;
+               center_pointer(r);
+       }
+
+       if (n->presel != NULL) {
+               draw_presel_feedback(m, d, n);
+       }
+
        if (is_leaf(n)) {
 
-               if ((borderless_monocle && is_tiled(n->client) &&
-                    d->layout == LAYOUT_MONOCLE) ||
-                   n->client->fullscreen)
-                       n->client->border_width = 0;
-               else
-                       n->client->border_width = d->border_width;
+               unsigned int bw;
+               if ((borderless_monocle && n->client->state == STATE_TILED && d->layout == LAYOUT_MONOCLE)
+                   || n->client->state == STATE_FULLSCREEN) {
+                       bw = 0;
+               } else {
+                       bw = n->client->border_width;
+               }
 
                xcb_rectangle_t r;
-               if (!n->client->fullscreen) {
-                       if (!n->client->floating) {
-                               if (n->client->pseudo_tiled) {
-                               /* pseudo-tiled clients */
-                                       r = n->client->floating_rectangle;
-                                       center_rectangle(&r, rect);
-                               } else {
-                                       /* tiled clients */
-                                       r = rect;
-                                       int wg = (gapless_monocle && d->layout == LAYOUT_MONOCLE ? 0 : d->window_gap);
-                                       int bleed = wg + 2 * n->client->border_width;
-                                       r.width = (bleed < r.width ? r.width - bleed : 1);
-                                       r.height = (bleed < r.height ? r.height - bleed : 1);
-                               }
-                               n->client->tiled_rectangle = r;
+               xcb_rectangle_t cr = get_rectangle(d, n);
+               client_state_t s = n->client->state;
+               if (s == STATE_TILED || s == STATE_PSEUDO_TILED) {
+                       int wg = (gapless_monocle && d->layout == LAYOUT_MONOCLE ? 0 : d->window_gap);
+                       /* tiled clients */
+                       if (s == STATE_TILED) {
+                               r = rect;
+                               int bleed = wg + 2 * bw;
+                               r.width = (bleed < r.width ? r.width - bleed : 1);
+                               r.height = (bleed < r.height ? r.height - bleed : 1);
+                       /* pseudo-tiled clients */
                        } else {
-                               /* floating clients */
                                r = n->client->floating_rectangle;
+                               if (center_pseudo_tiled) {
+                                       r.x = rect.x - bw + (rect.width - wg - r.width) / 2;
+                                       r.y = rect.y - bw + (rect.height - wg - r.height) / 2;
+                               } else {
+                                       r.x = rect.x;
+                                       r.y = rect.y;
+                               }
                        }
+                       n->client->tiled_rectangle = r;
+               /* floating clients */
+               } else if (s == STATE_FLOATING) {
+                       r = n->client->floating_rectangle;
+               /* fullscreen clients */
                } else {
-                       /* fullscreen clients */
                        r = m->rectangle;
                }
 
-               window_move_resize(n->client->window, r.x, r.y, r.width, r.height);
-               window_border_width(n->client->window, n->client->border_width);
-               window_draw_border(n, d->focus == n, m == mon);
+               if (!rect_eq(r, cr)) {
+                       window_move_resize(n->id, r.x, r.y, r.width, r.height);
+                       if (frozen_pointer->action == ACTION_NONE) {
+                               put_status(SBSC_MASK_NODE_GEOMETRY, "node_geometry %s %s 0x%X %ux%u+%i+%i\n", m->name, d->name, n->id, r.width, r.height, r.x, r.y);
+                       }
+               }
+
+               window_border_width(n->id, bw);
 
        } else {
                xcb_rectangle_t first_rect;
@@ -125,296 +166,446 @@ void apply_layout(monitor_t *m, desktop_t *d, node_t *n, xcb_rectangle_t rect, x
        }
 }
 
-void insert_node(monitor_t *m, desktop_t *d, node_t *n, node_t *f)
+presel_t *make_presel(void)
+{
+       presel_t *p = malloc(sizeof(presel_t));
+       p->split_dir = DIR_EAST;
+       p->split_ratio = split_ratio;
+       p->feedback = XCB_NONE;
+       return p;
+}
+
+void presel_dir(monitor_t *m, desktop_t *d, node_t *n, direction_t dir)
+{
+       if (n->presel == NULL) {
+               n->presel = make_presel();
+       }
+
+       n->presel->split_dir = dir;
+
+       put_status(SBSC_MASK_NODE_PRESEL, "node_presel %s %s 0x%X dir %s\n", m->name, d->name, n->id, SPLIT_DIR_STR(dir));
+}
+
+void presel_ratio(monitor_t *m, desktop_t *d, node_t *n, double ratio)
+{
+       if (n->presel == NULL) {
+               n->presel = make_presel();
+       }
+
+       n->presel->split_ratio = ratio;
+
+       put_status(SBSC_MASK_NODE_PRESEL, "node_presel %s %s 0x%X ratio %lf\n", m->name, d->name, n->id, ratio);
+}
+
+void cancel_presel(monitor_t *m, desktop_t *d, node_t *n)
 {
-       if (d == NULL || n == NULL)
+       if (n->presel == NULL) {
                return;
+       }
+
+       if (n->presel->feedback != XCB_NONE) {
+               xcb_destroy_window(dpy, n->presel->feedback);
+       }
+
+       free(n->presel);
+       n->presel = NULL;
 
-       PRINTF("insert node %X\n", n->client->window);
+       put_status(SBSC_MASK_NODE_PRESEL, "node_presel %s %s 0x%X cancel\n", m->name, d->name, n->id);
+}
 
-       /* n: new leaf node */
-       /* c: new container node */
+node_t *find_public(desktop_t *d)
+{
+       unsigned int b_manual_area = 0;
+       unsigned int b_automatic_area = 0;
+       node_t *b_manual = NULL;
+       node_t *b_automatic = NULL;
+       for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root)) {
+               if (n->vacant) {
+                       continue;
+               }
+               unsigned int n_area = node_area(d, n);
+               if (n_area > b_manual_area && (n->presel != NULL || !n->private)) {
+                       b_manual = n;
+                       b_manual_area = n_area;
+               }
+               if (n_area > b_automatic_area &&
+                   n->presel == NULL && !n->private && private_count(n->parent) == 0) {
+                       b_automatic = n;
+                       b_automatic_area = n_area;
+               }
+       }
+       if (b_automatic != NULL) {
+               return b_automatic;
+       } else {
+               return b_manual;
+       }
+}
+
+node_t *insert_node(monitor_t *m, desktop_t *d, node_t *n, node_t *f)
+{
+       if (d == NULL || n == NULL) {
+               return NULL;
+       }
+
+       /* n: inserted node */
+       /* c: new internal node */
        /* f: focus or insertion anchor */
        /* p: parent of focus */
        /* g: grand parent of focus */
 
-       if (f == NULL)
+       if (f == NULL) {
                f = d->root;
+       }
 
        if (f == NULL) {
                d->root = n;
        } else {
-               node_t *c = make_node();
+               node_t *c = make_node(XCB_NONE);
                node_t *p = f->parent;
-               if (p != NULL && f->split_mode == MODE_AUTOMATIC &&
-                   (p->first_child->vacant || p->second_child->vacant)) {
-                       f = p;
-                       p = f->parent;
-               }
-               if (((f->client != NULL && f->client->private) ||
-                    (p != NULL && p->privacy_level > 0)) &&
-                   f->split_mode == MODE_AUTOMATIC) {
-                       node_t *closest = NULL;
-                       node_t *public = NULL;
-                       closest_public(d, f, &closest, &public);
-                       if (public != NULL) {
-                               f = public;
+               if (f->presel == NULL && (f->private || private_count(f->parent) > 0)) {
+                       node_t *k = find_public(d);
+                       if (k != NULL) {
+                               f = k;
                                p = f->parent;
-                       } else {
-                               if (closest != NULL) {
-                                       f = closest;
-                                       p = f->parent;
-                               }
-                               f->split_mode = MODE_MANUAL;
-                               xcb_rectangle_t rect = f->client->tiled_rectangle;
-                               f->split_dir = (rect.width >= rect.height ? DIR_LEFT : DIR_UP);
-                               if (f->client->private) {
-                                       get_opposite(f->split_dir, &f->split_dir);
-                                       update_privacy_level(f, false);
-                               }
                        }
+                       if (f->presel == NULL && (f->private || private_count(f->parent) > 0)) {
+                               xcb_rectangle_t rect = get_rectangle(d, f);
+                               presel_dir(m, d, f, (rect.width >= rect.height ? DIR_EAST : DIR_SOUTH));
+                       }
+               }
+               if (f->presel == NULL && p != NULL && p->vacant) {
+                       f = p;
+                       p = f->parent;
                }
                n->parent = c;
                c->birth_rotation = f->birth_rotation;
-               switch (f->split_mode) {
-                       case MODE_AUTOMATIC:
-                               if (p == NULL) {
+               if (f->presel == NULL) {
+                       if (p == NULL) {
+                               if (initial_polarity == FIRST_CHILD) {
                                        c->first_child = n;
                                        c->second_child = f;
-                                       if (m->rectangle.width > m->rectangle.height)
-                                               c->split_type = TYPE_VERTICAL;
-                                       else
-                                               c->split_type = TYPE_HORIZONTAL;
-                                       f->parent = c;
-                                       d->root = c;
                                } else {
-                                       node_t *g = p->parent;
-                                       c->parent = g;
-                                       if (g != NULL) {
-                                               if (is_first_child(p))
-                                                       g->first_child = c;
-                                               else
-                                                       g->second_child = c;
-                                       } else {
-                                               d->root = c;
-                                       }
-                                       c->split_type = p->split_type;
-                                       c->split_ratio = p->split_ratio;
-                                       p->parent = c;
-                                       int rot;
-                                       if (is_first_child(f)) {
-                                               c->first_child = n;
-                                               c->second_child = p;
-                                               rot = 90;
+                                       c->first_child = f;
+                                       c->second_child = n;
+                               }
+                               if (m->rectangle.width > m->rectangle.height) {
+                                       c->split_type = TYPE_VERTICAL;
+                               } else {
+                                       c->split_type = TYPE_HORIZONTAL;
+                               }
+                               f->parent = c;
+                               d->root = c;
+                       } else {
+                               node_t *g = p->parent;
+                               c->parent = g;
+                               if (g != NULL) {
+                                       if (is_first_child(p)) {
+                                               g->first_child = c;
                                        } else {
-                                               c->first_child = p;
-                                               c->second_child = n;
-                                               rot = 270;
+                                               g->second_child = c;
                                        }
-                                       if (!is_floating(n->client))
-                                               rotate_tree(p, rot);
-                                       n->birth_rotation = rot;
+                               } else {
+                                       d->root = c;
                                }
-                               break;
-                       case MODE_MANUAL:
-                               if (p != NULL) {
-                                       if (is_first_child(f))
-                                               p->first_child = c;
-                                       else
-                                               p->second_child = c;
+                               c->split_type = p->split_type;
+                               c->split_ratio = p->split_ratio;
+                               p->parent = c;
+                               int rot;
+                               if (is_first_child(f)) {
+                                       c->first_child = n;
+                                       c->second_child = p;
+                                       rot = 90;
+                               } else {
+                                       c->first_child = p;
+                                       c->second_child = n;
+                                       rot = 270;
                                }
-                               c->split_ratio = f->split_ratio;
-                               c->parent = p;
-                               f->parent = c;
-                               f->birth_rotation = 0;
-                               switch (f->split_dir) {
-                                       case DIR_LEFT:
-                                               c->split_type = TYPE_VERTICAL;
-                                               c->first_child = n;
-                                               c->second_child = f;
-                                               break;
-                                       case DIR_RIGHT:
-                                               c->split_type = TYPE_VERTICAL;
-                                               c->first_child = f;
-                                               c->second_child = n;
-                                               break;
-                                       case DIR_UP:
-                                               c->split_type = TYPE_HORIZONTAL;
-                                               c->first_child = n;
-                                               c->second_child = f;
-                                               break;
-                                       case DIR_DOWN:
-                                               c->split_type = TYPE_HORIZONTAL;
-                                               c->first_child = f;
-                                               c->second_child = n;
-                                               break;
+                               n->birth_rotation = rot;
+                               if (!n->vacant) {
+                                       rotate_tree(p, rot);
                                }
-                               if (d->root == f)
-                                       d->root = c;
-                               f->split_mode = MODE_AUTOMATIC;
-                               break;
+                       }
+               } else {
+                       if (p != NULL) {
+                               if (is_first_child(f)) {
+                                       p->first_child = c;
+                               } else {
+                                       p->second_child = c;
+                               }
+                       }
+                       c->split_ratio = f->presel->split_ratio;
+                       c->parent = p;
+                       f->parent = c;
+                       f->birth_rotation = 0;
+                       switch (f->presel->split_dir) {
+                               case DIR_WEST:
+                                       c->split_type = TYPE_VERTICAL;
+                                       c->first_child = n;
+                                       c->second_child = f;
+                                       break;
+                               case DIR_EAST:
+                                       c->split_type = TYPE_VERTICAL;
+                                       c->first_child = f;
+                                       c->second_child = n;
+                                       break;
+                               case DIR_NORTH:
+                                       c->split_type = TYPE_HORIZONTAL;
+                                       c->first_child = n;
+                                       c->second_child = f;
+                                       break;
+                               case DIR_SOUTH:
+                                       c->split_type = TYPE_HORIZONTAL;
+                                       c->first_child = f;
+                                       c->second_child = n;
+                                       break;
+                       }
+                       if (d->root == f) {
+                               d->root = c;
+                       }
+                       cancel_presel(m, d, f);
+               }
+               if (f->vacant) {
+                       propagate_vacant_state(m, d, f);
                }
-               if (f->vacant)
-                       update_vacant_state(f->parent);
-               if (f->client != NULL && f->client->private)
-                       update_privacy_level(f, true);
        }
-       if (n->client->private)
-               update_privacy_level(n, true);
-       if (d->focus == NULL)
+
+       if (d->focus == NULL) {
                d->focus = n;
-       if (n->client->sticky)
-               m->num_sticky++;
-       put_status();
+       }
+
+       return f;
 }
 
-void pseudo_focus(monitor_t *m, desktop_t *d, node_t *n)
+void activate_node(monitor_t *m, desktop_t *d, node_t *n)
 {
+       if (n == NULL && d->root != NULL) {
+               n = history_last_node(d, NULL);
+               if (n == NULL) {
+                       n = first_extrema(d->root);
+               }
+       }
+
        if (n != NULL) {
-               stack(n, STACK_ABOVE);
+               if (d->focus != NULL && n != d->focus) {
+                       neutralize_occluding_windows(m, d, n);
+               }
+               stack(d, n, true);
                if (d->focus != n) {
-                       window_draw_border(d->focus, false, m == mon);
-                       window_draw_border(n, true, m == mon);
+                       for (node_t *f = first_extrema(d->focus); f != NULL; f = next_leaf(f, d->focus)) {
+                               if (!is_descendant(f, n)) {
+                                       window_draw_border(f->id, get_border_color(false, (m == mon)));
+                               }
+                       }
                }
+               draw_border(n, true, (m == mon));
        }
+
        d->focus = n;
+
+       put_status(SBSC_MASK_NODE_ACTIVATE, "node_activate %s %s 0x%X\n", m->name, d->name, n!=NULL?n->id:0);
+       put_status(SBSC_MASK_REPORT);
+}
+
+void transfer_sticky_nodes(monitor_t *m, desktop_t *ds, desktop_t *dd, node_t *n)
+{
+       if (n == NULL) {
+               return;
+       } else if (n->sticky) {
+               transfer_node(m, ds, n, m, dd, dd->focus);
+       } else {
+               /* we need references to the children because n might be freed after
+                * the first recursive call */
+               node_t *first_child = n->first_child;
+               node_t *second_child = n->second_child;
+               transfer_sticky_nodes(m, ds, dd, first_child);
+               transfer_sticky_nodes(m, ds, dd, second_child);
+       }
 }
 
 void focus_node(monitor_t *m, desktop_t *d, node_t *n)
 {
-       if (mon->desk != d || n == NULL)
+       if (n == NULL && d->root != NULL) {
+               n = history_last_node(d, NULL);
+               if (n == NULL) {
+                       n = first_extrema(d->root);
+               }
+       }
+
+       if (mon->desk != d || n == NULL || n->client == NULL) {
                clear_input_focus();
+       }
 
-       if (m->num_sticky > 0 && d != m->desk) {
-               node_t *a = first_extrema(m->desk->root);
+       if (m->sticky_count > 0 && d != m->desk) {
                sticky_still = false;
-               while (a != NULL) {
-                       node_t *b = next_leaf(a, m->desk->root);
-                       if (a->client->sticky)
-                               transfer_node(m, m->desk, a, m, d, d->focus);
-                       a = b;
-               }
+               transfer_sticky_nodes(m, m->desk, d, m->desk->root);
                sticky_still = true;
-               if (n == NULL && d->focus != NULL)
+               if (n == NULL && d->focus != NULL) {
                        n = d->focus;
+               }
        }
 
-       if (n != NULL) {
-               if (d->focus != NULL && n != d->focus && d->focus->client->fullscreen) {
-                       set_fullscreen(d->focus, false);
-                       arrange(m, d);
-               }
-               if (n->client->urgent) {
-                       n->client->urgent = false;
-                       put_status();
-               }
+       if (d->focus != NULL && n != d->focus) {
+               neutralize_occluding_windows(m, d, n);
+       }
+
+       if (n != NULL && n->client != NULL && n->client->urgent) {
+               set_urgent(m, d, n, false);
        }
 
        if (mon != m) {
-               for (desktop_t *cd = mon->desk_head; cd != NULL; cd = cd->next)
-                       window_draw_border(cd->focus, true, false);
-               for (desktop_t *cd = m->desk_head; cd != NULL; cd = cd->next)
-                       if (cd != d)
-                               window_draw_border(cd->focus, true, true);
-               if (d->focus == n)
-                       window_draw_border(n, true, true);
+               for (desktop_t *e = mon->desk_head; e != NULL; e = e->next) {
+                       draw_border(e->focus, true, false);
+               }
+               for (desktop_t *e = m->desk_head; e != NULL; e = e->next) {
+                       if (e == d) {
+                               continue;
+                       }
+                       draw_border(e->focus, true, true);
+               }
        }
 
        if (d->focus != n) {
-               window_draw_border(d->focus, false, true);
-               window_draw_border(n, true, true);
+               for (node_t *f = first_extrema(d->focus); f != NULL; f = next_leaf(f, d->focus)) {
+                       if (!is_descendant(f, n)) {
+                               window_draw_border(f->id, get_border_color(false, true));
+                       }
+               }
        }
 
+       draw_border(n, true, true);
+
        focus_desktop(m, d);
 
        d->focus = n;
+       ewmh_update_active_window();
+       history_add(m, d, n);
+
+       put_status(SBSC_MASK_REPORT);
 
        if (n == NULL) {
-               history_add(m, d, NULL);
-               ewmh_update_active_window();
                return;
-       } else {
-               stack(n, STACK_ABOVE);
        }
 
-       PRINTF("focus node %X\n", n->client->window);
+       put_status(SBSC_MASK_NODE_FOCUS, "node_focus %s %s 0x%X\n", m->name, d->name, n->id);
 
-       history_add(m, d, n);
+       stack(d, n, true);
        set_input_focus(n);
 
        if (focus_follows_pointer) {
                xcb_window_t win = XCB_NONE;
                query_pointer(&win, NULL);
-               if (win != n->client->window)
+               if (win != n->id) {
                        enable_motion_recorder();
-               else
+               } else {
                        disable_motion_recorder();
+               }
        }
 
-       ewmh_update_active_window();
+       if (pointer_follows_focus) {
+               center_pointer(get_rectangle(d, n));
+       }
 }
 
-void update_current(void)
+void update_focused(void)
 {
        focus_node(mon, mon->desk, mon->desk->focus);
 }
 
-node_t *make_node(void)
+void hide_node(node_t *n)
+{
+       if (n == NULL) {
+               return;
+       } else {
+               if (n->presel != NULL) {
+                       window_hide(n->presel->feedback);
+               }
+               if (n->client != NULL) {
+                       window_hide(n->id);
+                       n->client->visible = false;
+               }
+               hide_node(n->first_child);
+               hide_node(n->second_child);
+       }
+}
+
+void show_node(node_t *n)
+{
+       if (n == NULL) {
+               return;
+       } else {
+               if (n->client != NULL) {
+                       window_show(n->id);
+                       n->client->visible = true;
+               }
+               if (n->presel != NULL) {
+                       window_show(n->presel->feedback);
+               }
+               show_node(n->first_child);
+               show_node(n->second_child);
+       }
+}
+
+node_t *make_node(uint32_t id)
 {
+       if (id == XCB_NONE) {
+               id = xcb_generate_id(dpy);
+       }
        node_t *n = malloc(sizeof(node_t));
+       n->id = id;
        n->parent = n->first_child = n->second_child = NULL;
+       n->vacant = n->sticky = n->private = n->locked = false;
        n->split_ratio = split_ratio;
-       n->split_mode = MODE_AUTOMATIC;
        n->split_type = TYPE_VERTICAL;
        n->birth_rotation = 0;
-       n->privacy_level = 0;
+       n->presel = NULL;
        n->client = NULL;
-       n->vacant = false;
        return n;
 }
 
-client_t *make_client(xcb_window_t win)
+client_t *make_client(void)
 {
        client_t *c = malloc(sizeof(client_t));
-       c->window = win;
+       c->state = c->last_state = STATE_TILED;
+       c->layer = c->last_layer = LAYER_NORMAL;
        snprintf(c->class_name, sizeof(c->class_name), "%s", MISSING_VALUE);
        snprintf(c->instance_name, sizeof(c->instance_name), "%s", MISSING_VALUE);
-       c->border_width = BORDER_WIDTH;
-       c->pseudo_tiled = c->floating = c->fullscreen = false;
-       c->locked = c->sticky = c->urgent = c->private = c->icccm_focus = false;
-       xcb_icccm_get_wm_protocols_reply_t protocols;
-       if (xcb_icccm_get_wm_protocols_reply(dpy, xcb_icccm_get_wm_protocols(dpy, win, ewmh->WM_PROTOCOLS), &protocols, NULL) == 1) {
-               if (has_proto(WM_TAKE_FOCUS, &protocols))
-                       c->icccm_focus = true;
-               xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
-       }
-       c->num_states = 0;
-       xcb_ewmh_get_atoms_reply_t wm_state;
-       if (xcb_ewmh_get_wm_state_reply(ewmh, xcb_ewmh_get_wm_state(ewmh, win), &wm_state, NULL) == 1) {
-               for (unsigned int i = 0; i < wm_state.atoms_len && i < MAX_STATE; i++)
-                       ewmh_wm_state_add(c, wm_state.atoms[i]);
-               xcb_ewmh_get_atoms_reply_wipe(&wm_state);
-       }
+       c->border_width = border_width;
+       c->urgent = c->visible = c->icccm_focus = false;
+       c->icccm_input = true;
+       c->wm_states_count = 0;
        return c;
 }
 
-bool is_leaf(node_t *n)
-{
-       return (n != NULL && n->first_child == NULL && n->second_child == NULL);
-}
-
-bool is_tiled(client_t *c)
+void initialize_client(node_t *n)
 {
-       if (c == NULL)
-               return false;
-       return (!c->floating && !c->fullscreen);
+       xcb_window_t win = n->id;
+       if (win != XCB_NONE) {
+               client_t *c = n->client;
+               xcb_icccm_get_wm_protocols_reply_t protocols;
+               if (xcb_icccm_get_wm_protocols_reply(dpy, xcb_icccm_get_wm_protocols(dpy, win, ewmh->WM_PROTOCOLS), &protocols, NULL) == 1) {
+                       if (has_proto(WM_TAKE_FOCUS, &protocols)) {
+                               c->icccm_focus = true;
+                       }
+                       xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
+               }
+               xcb_ewmh_get_atoms_reply_t wm_state;
+               if (xcb_ewmh_get_wm_state_reply(ewmh, xcb_ewmh_get_wm_state(ewmh, win), &wm_state, NULL) == 1) {
+                       for (unsigned int i = 0; i < wm_state.atoms_len && i < MAX_WM_STATES; i++) {
+                               ewmh_wm_state_add(n, wm_state.atoms[i]);
+                       }
+                       xcb_ewmh_get_atoms_reply_wipe(&wm_state);
+               }
+               xcb_icccm_wm_hints_t hints;
+               if (xcb_icccm_get_wm_hints_reply(dpy, xcb_icccm_get_wm_hints(dpy, win), &hints, NULL) == 1
+                   && (hints.flags & XCB_ICCCM_WM_HINT_INPUT)) {
+                       c->icccm_input = hints.input;
+               }
+       }
 }
 
-bool is_floating(client_t *c)
+bool is_leaf(node_t *n)
 {
-       if (c == NULL)
-               return false;
-       return (c->floating && !c->fullscreen);
+       return (n != NULL && n->first_child == NULL && n->second_child == NULL);
 }
 
 bool is_first_child(node_t *n)
@@ -427,145 +618,115 @@ bool is_second_child(node_t *n)
        return (n != NULL && n->parent != NULL && n->parent->second_child == n);
 }
 
-void reset_mode(coordinates_t *loc)
+unsigned int clients_count_in(node_t *n)
 {
-       if (loc->node != NULL) {
-               loc->node->split_mode = MODE_AUTOMATIC;
-               window_draw_border(loc->node, loc->desktop->focus == loc->node, mon == loc->monitor);
-       } else if (loc->desktop != NULL) {
-               for (node_t *a = first_extrema(loc->desktop->root); a != NULL; a = next_leaf(a, loc->desktop->root)) {
-                       a->split_mode = MODE_AUTOMATIC;
-                       window_draw_border(a, loc->desktop->focus == a, mon == loc->monitor);
-               }
+       if (n == NULL) {
+               return 0;
+       } else {
+               return (n->client != NULL ? 1 : 0) +
+                       clients_count_in(n->first_child) +
+                       clients_count_in(n->second_child);
        }
 }
 
 node_t *brother_tree(node_t *n)
 {
-       if (n == NULL || n->parent == NULL)
+       if (n == NULL || n->parent == NULL) {
                return NULL;
-       if (is_first_child(n))
+       }
+       if (is_first_child(n)) {
                return n->parent->second_child;
-       else
+       } else {
                return n->parent->first_child;
-}
-
-void closest_public(desktop_t *d, node_t *n, node_t **closest, node_t **public)
-{
-       if (n == NULL)
-               return;
-       node_t *prev = prev_leaf(n, d->root);
-       node_t *next = next_leaf(n, d->root);
-       while (prev != NULL || next != NULL) {
-#define TESTLOOP(n) \
-               if (n != NULL) { \
-                       if (is_tiled(n->client)) { \
-                               if (n->privacy_level == 0) { \
-                                       if (n->parent == NULL || n->parent->privacy_level == 0) { \
-                                               *public = n; \
-                                               return; \
-                                       } else if (*closest == NULL) { \
-                                               *closest = n; \
-                                       } \
-                               } \
-                       } \
-                       n = n##_leaf(n, d->root); \
-               }
-               TESTLOOP(prev)
-               TESTLOOP(next)
-#undef TESTLOOP
        }
 }
 
 node_t *first_extrema(node_t *n)
 {
-       if (n == NULL)
+       if (n == NULL) {
                return NULL;
-       else if (n->first_child == NULL)
+       } else if (n->first_child == NULL) {
                return n;
-       else
+       } else {
                return first_extrema(n->first_child);
+       }
 }
 
 node_t *second_extrema(node_t *n)
 {
-       if (n == NULL)
+       if (n == NULL) {
                return NULL;
-       else if (n->second_child == NULL)
+       } else if (n->second_child == NULL) {
                return n;
-       else
+       } else {
                return second_extrema(n->second_child);
+       }
 }
 
 node_t *next_leaf(node_t *n, node_t *r)
 {
-       if (n == NULL)
+       if (n == NULL) {
                return NULL;
+       }
        node_t *p = n;
-       while (is_second_child(p) && p != r)
+       while (is_second_child(p) && p != r) {
                p = p->parent;
-       if (p == r)
+       }
+       if (p == r) {
                return NULL;
+       }
        return first_extrema(p->parent->second_child);
 }
 
 node_t *prev_leaf(node_t *n, node_t *r)
 {
-       if (n == NULL)
+       if (n == NULL) {
                return NULL;
+       }
        node_t *p = n;
-       while (is_first_child(p) && p != r)
+       while (is_first_child(p) && p != r) {
                p = p->parent;
-       if (p == r)
+       }
+       if (p == r) {
                return NULL;
+       }
        return second_extrema(p->parent->first_child);
 }
 
 node_t *next_tiled_leaf(desktop_t *d, node_t *n, node_t *r)
 {
        node_t *next = next_leaf(n, r);
-       if (next == NULL || is_tiled(next->client))
+       if (next == NULL || IS_TILED(next->client)) {
                return next;
-       else
+       } else {
                return next_tiled_leaf(d, next, r);
+       }
 }
 
 node_t *prev_tiled_leaf(desktop_t *d, node_t *n, node_t *r)
 {
        node_t *prev = prev_leaf(n, r);
-       if (prev == NULL || is_tiled(prev->client))
+       if (prev == NULL || IS_TILED(prev->client)) {
                return prev;
-       else
+       } else {
                return prev_tiled_leaf(d, prev, r);
+       }
 }
 
-/* bool is_adjacent(node_t *a, node_t *r) */
-/* { */
-/*        node_t *f = r->parent; */
-/*        node_t *p = a; */
-/*        bool first_child = is_first_child(r); */
-/*        while (p != r) { */
-/*                if (p->parent->split_type == f->split_type && is_first_child(p) == first_child) */
-/*                        return false; */
-/*                p = p->parent; */
-/*        } */
-/*        return true; */
-/* } */
-
 /* Returns true if *b* is adjacent to *a* in the direction *dir* */
 bool is_adjacent(node_t *a, node_t *b, direction_t dir)
 {
        switch (dir) {
-               case DIR_RIGHT:
+               case DIR_EAST:
                        return (a->rectangle.x + a->rectangle.width) == b->rectangle.x;
                        break;
-               case DIR_DOWN:
+               case DIR_SOUTH:
                        return (a->rectangle.y + a->rectangle.height) == b->rectangle.y;
                        break;
-               case DIR_LEFT:
+               case DIR_WEST:
                        return (b->rectangle.x + b->rectangle.width) == a->rectangle.x;
                        break;
-               case DIR_UP:
+               case DIR_NORTH:
                        return (b->rectangle.y + b->rectangle.height) == a->rectangle.y;
                        break;
        }
@@ -576,16 +737,17 @@ node_t *find_fence(node_t *n, direction_t dir)
 {
        node_t *p;
 
-       if (n == NULL)
+       if (n == NULL) {
                return NULL;
+       }
 
        p = n->parent;
 
        while (p != NULL) {
-               if ((dir == DIR_UP && p->split_type == TYPE_HORIZONTAL && p->rectangle.y < n->rectangle.y) ||
-                   (dir == DIR_LEFT && p->split_type == TYPE_VERTICAL && p->rectangle.x < n->rectangle.x) ||
-                   (dir == DIR_DOWN && p->split_type == TYPE_HORIZONTAL && (p->rectangle.y + p->rectangle.height) > (n->rectangle.y + n->rectangle.height)) ||
-                   (dir == DIR_RIGHT && p->split_type == TYPE_VERTICAL && (p->rectangle.x + p->rectangle.width) > (n->rectangle.x + n->rectangle.width)))
+               if ((dir == DIR_NORTH && p->split_type == TYPE_HORIZONTAL && p->rectangle.y < n->rectangle.y) ||
+                   (dir == DIR_WEST && p->split_type == TYPE_VERTICAL && p->rectangle.x < n->rectangle.x) ||
+                   (dir == DIR_SOUTH && p->split_type == TYPE_HORIZONTAL && (p->rectangle.y + p->rectangle.height) > (n->rectangle.y + n->rectangle.height)) ||
+                   (dir == DIR_EAST && p->split_type == TYPE_VERTICAL && (p->rectangle.x + p->rectangle.width) > (n->rectangle.x + n->rectangle.width)))
                        return p;
                p = p->parent;
        }
@@ -593,43 +755,138 @@ node_t *find_fence(node_t *n, direction_t dir)
        return NULL;
 }
 
-node_t *nearest_neighbor(monitor_t *m, desktop_t *d, node_t *n, direction_t dir, client_select_t sel)
+node_t *nearest_neighbor(monitor_t *m, desktop_t *d, node_t *n, direction_t dir, node_select_t sel)
 {
-       if (n == NULL || n->client->fullscreen ||
-           (d->layout == LAYOUT_MONOCLE && is_tiled(n->client)))
+       if (n == NULL || (n->client != NULL && IS_FULLSCREEN(n->client)) ||
+           (d->layout == LAYOUT_MONOCLE && (n->client != NULL && IS_TILED(n->client)))) {
                return NULL;
+       }
 
        node_t *nearest = NULL;
-       if (history_aware_focus)
+       if (history_aware_focus) {
                nearest = nearest_from_history(m, d, n, dir, sel);
-       if (nearest == NULL)
-               nearest = nearest_from_distance(m, d, n, dir, sel);
-       return nearest;
+       }
+    if (nearest == NULL) {
+        if (focus_by_distance) {
+            nearest = nearest_from_distance(m, d, n, dir, sel);
+        } else {
+            nearest = nearest_from_tree(m, d, n, dir, sel);
+        }
+    }
+    return nearest;
+}
+
+/* returns *true* if *a* is a child of *b* */
+bool is_child(node_t *a, node_t *b)
+{
+       if (a == NULL || b == NULL) {
+               return false;
+       }
+       return (a->parent != NULL && a->parent == b);
+}
+
+/* returns *true* if *a* is a descendant of *b* */
+bool is_descendant(node_t *a, node_t *b)
+{
+       if (a == NULL || b == NULL) {
+               return false;
+       }
+       while (a != b && a != NULL) {
+               a = a->parent;
+       }
+       return a == b;
+}
+
+bool find_by_id(uint32_t id, coordinates_t *loc)
+{
+       for (monitor_t *m = mon_head; m != NULL; m = m->next) {
+               for (desktop_t *d = m->desk_head; d != NULL; d = d->next) {
+                       node_t *n = find_by_id_in(d->root, id);
+                       if (n != NULL) {
+                               loc->monitor = m;
+                               loc->desktop = d;
+                               loc->node = n;
+                               return true;
+                       }
+               }
+       }
+       return false;
+}
+
+node_t *find_by_id_in(node_t *r, uint32_t id)
+{
+       if (r == NULL) {
+               return NULL;
+       } else if (r->id == id) {
+               return r;
+       } else {
+               node_t *f = find_by_id_in(r->first_child, id);
+               if (f != NULL) {
+                       return f;
+               } else {
+                       return find_by_id_in(r->second_child, id);
+               }
+       }
+}
+
+node_t *nearest_from_tree(monitor_t *m, desktop_t *d, node_t *n, direction_t dir, node_select_t sel)
+{
+    if (n == NULL) {
+        return NULL;
+    }
+
+    node_t *fence = find_fence(n, dir);
+
+    if (fence == NULL) {
+        return NULL;
+    }
+
+    node_t *nearest = NULL;
+
+    if (dir == DIR_NORTH || dir == DIR_WEST) {
+        nearest = second_extrema(fence->first_child);
+    } else if (dir == DIR_SOUTH || dir == DIR_EAST) {
+        nearest = first_extrema(fence->second_child);
+    }
+
+       coordinates_t ref = {m, d, n};
+       coordinates_t loc = {m, d, nearest};
+
+       if (node_matches(&loc, &ref, sel)) {
+               return nearest;
+       } else {
+               return NULL;
+       }
 }
 
-node_t *nearest_from_history(monitor_t *m, desktop_t *d, node_t *n, direction_t dir, client_select_t sel)
+node_t *nearest_from_history(monitor_t *m, desktop_t *d, node_t *n, direction_t dir, node_select_t sel)
 {
-       if (n == NULL || !is_tiled(n->client))
+       if (n == NULL || (n->client != NULL && !IS_TILED(n->client))) {
                return NULL;
+       }
 
        node_t *target = find_fence(n, dir);
-       if (target == NULL)
+       if (target == NULL) {
                return NULL;
-       if (dir == DIR_UP || dir == DIR_LEFT)
+       }
+       if (dir == DIR_NORTH || dir == DIR_WEST) {
                target = target->first_child;
-       else if (dir == DIR_DOWN || dir == DIR_RIGHT)
+       } else if (dir == DIR_SOUTH || dir == DIR_EAST) {
                target = target->second_child;
+       }
 
        node_t *nearest = NULL;
        int min_rank = INT_MAX;
        coordinates_t ref = {m, d, n};
 
        for (node_t *a = first_extrema(target); a != NULL; a = next_leaf(a, target)) {
-               if (a->vacant || !is_adjacent(n, a, dir) || a == n)
+               if (a->vacant || !is_adjacent(n, a, dir) || a == n) {
                        continue;
+               }
                coordinates_t loc = {m, d, a};
-               if (!node_matches(&loc, &ref, sel))
+               if (!node_matches(&loc, &ref, sel)) {
                        continue;
+               }
 
                int rank = history_rank(d, a);
                if (rank >= 0 && rank < min_rank) {
@@ -641,30 +898,33 @@ node_t *nearest_from_history(monitor_t *m, desktop_t *d, node_t *n, direction_t
        return nearest;
 }
 
-node_t *nearest_from_distance(monitor_t *m, desktop_t *d, node_t *n, direction_t dir, client_select_t sel)
+node_t *nearest_from_distance(monitor_t *m, desktop_t *d, node_t *n, direction_t dir, node_select_t sel)
 {
-       if (n == NULL)
+       if (n == NULL) {
                return NULL;
+       }
 
        node_t *target = NULL;
 
-       if (is_tiled(n->client)) {
+       if (n->client == NULL || IS_TILED(n->client)) {
                target = find_fence(n, dir);
-               if (target == NULL)
+               if (target == NULL) {
                        return NULL;
-               if (dir == DIR_UP || dir == DIR_LEFT)
+               }
+               if (dir == DIR_NORTH || dir == DIR_WEST) {
                        target = target->first_child;
-               else if (dir == DIR_DOWN || dir == DIR_RIGHT)
+               } else if (dir == DIR_SOUTH || dir == DIR_EAST) {
                        target = target->second_child;
+               }
        } else {
                target = d->root;
        }
 
        node_t *nearest = NULL;
-       direction_t dir2;
+       direction_t dir2 = DIR_NORTH;
        xcb_point_t pt;
        xcb_point_t pt2;
-       get_side_handle(n->client, dir, &pt);
+       get_side_handle(d, n, dir, &pt);
        get_opposite(dir, &dir2);
        double ds = DBL_MAX;
        coordinates_t ref = {m, d, n};
@@ -673,11 +933,12 @@ node_t *nearest_from_distance(monitor_t *m, desktop_t *d, node_t *n, direction_t
                coordinates_t loc = {m, d, a};
                if (a == n ||
                    !node_matches(&loc, &ref, sel) ||
-                   is_tiled(a->client) != is_tiled(n->client) ||
-                   (is_tiled(a->client) && !is_adjacent(n, a, dir)))
+                   (n->client != NULL && (IS_TILED(a->client) != IS_TILED(n->client))) ||
+                   (IS_TILED(a->client) && !is_adjacent(n, a, dir))) {
                        continue;
+               }
 
-               get_side_handle(a->client, dir2, &pt2);
+               get_side_handle(d, a, dir2, &pt2);
                double ds2 = distance(pt, pt2);
                if (ds2 < ds) {
                        ds = ds2;
@@ -691,59 +952,73 @@ node_t *nearest_from_distance(monitor_t *m, desktop_t *d, node_t *n, direction_t
 void get_opposite(direction_t src, direction_t *dst)
 {
        switch (src) {
-               case DIR_RIGHT:
-                       *dst = DIR_LEFT;
+               case DIR_EAST:
+                       *dst = DIR_WEST;
                        break;
-               case DIR_DOWN:
-                       *dst = DIR_UP;
+               case DIR_SOUTH:
+                       *dst = DIR_NORTH;
                        break;
-               case DIR_LEFT:
-                       *dst = DIR_RIGHT;
+               case DIR_WEST:
+                       *dst = DIR_EAST;
                        break;
-               case DIR_UP:
-                       *dst = DIR_DOWN;
+               case DIR_NORTH:
+                       *dst = DIR_SOUTH;
                        break;
        }
 }
 
-int tiled_area(node_t *n)
+unsigned int node_area(desktop_t *d, node_t *n)
 {
-       if (n == NULL)
-               return -1;
-       xcb_rectangle_t rect = n->client->tiled_rectangle;
-       return rect.width * rect.height;
+       if (n == NULL) {
+               return 0;
+       }
+       return area(get_rectangle(d, n));
 }
 
-node_t *find_biggest(monitor_t *m, desktop_t *d, node_t *n, client_select_t sel)
+int tiled_count(node_t *n)
 {
-       if (d == NULL)
+       if (n == NULL) {
+               return 0;
+       }
+       int cnt = 0;
+       for (node_t *f = first_extrema(n); f != NULL; f = next_leaf(f, n)) {
+               if (IS_TILED(f->client)) {
+                       cnt++;
+               }
+       }
+       return cnt;
+}
+
+node_t *find_biggest(monitor_t *m, desktop_t *d, node_t *n, node_select_t sel)
+{
+       if (d == NULL) {
                return NULL;
+       }
 
-       node_t *r = NULL;
-       int r_area = tiled_area(r);
+       node_t *b = NULL;
+       unsigned int b_area = 0;
        coordinates_t ref = {m, d, n};
 
        for (node_t *f = first_extrema(d->root); f != NULL; f = next_leaf(f, d->root)) {
                coordinates_t loc = {m, d, f};
-               if (!is_tiled(f->client) || !node_matches(&loc, &ref, sel))
+               if (f->vacant || !node_matches(&loc, &ref, sel)) {
                        continue;
-               int f_area = tiled_area(f);
-               if (r == NULL) {
-                       r = f;
-                       r_area = f_area;
-               } else if (f_area > r_area) {
-                       r = f;
-                       r_area = f_area;
+               }
+               unsigned int f_area = node_area(d, f);
+               if (f_area > b_area) {
+                       b = f;
+                       b_area = f_area;
                }
        }
 
-       return r;
+       return b;
 }
 
 void rotate_tree(node_t *n, int deg)
 {
-       if (n == NULL || is_leaf(n) || deg == 0)
+       if (n == NULL || is_leaf(n) || deg == 0) {
                return;
+       }
 
        node_t *tmp;
 
@@ -757,10 +1032,11 @@ void rotate_tree(node_t *n, int deg)
        }
 
        if (deg != 180) {
-               if (n->split_type == TYPE_HORIZONTAL)
+               if (n->split_type == TYPE_HORIZONTAL) {
                        n->split_type = TYPE_VERTICAL;
-               else if (n->split_type == TYPE_VERTICAL)
+               } else if (n->split_type == TYPE_VERTICAL) {
                        n->split_type = TYPE_HORIZONTAL;
+               }
        }
 
        rotate_tree(n->first_child, deg);
@@ -774,8 +1050,9 @@ void rotate_brother(node_t *n)
 
 void unrotate_tree(node_t *n, int rot)
 {
-       if (rot == 0)
+       if (rot == 0) {
                return;
+       }
        rotate_tree(n, 360 - rot);
 }
 
@@ -786,8 +1063,9 @@ void unrotate_brother(node_t *n)
 
 void flip_tree(node_t *n, flip_t flp)
 {
-       if (n == NULL || is_leaf(n))
+       if (n == NULL || is_leaf(n)) {
                return;
+       }
 
        node_t *tmp;
 
@@ -824,18 +1102,18 @@ int balance_tree(node_t *n)
                int b1 = balance_tree(n->first_child);
                int b2 = balance_tree(n->second_child);
                int b = b1 + b2;
-               if (b1 > 0 && b2 > 0)
+               if (b1 > 0 && b2 > 0) {
                        n->split_ratio = (double) b1 / b;
+               }
                return b;
        }
 }
 
 void unlink_node(monitor_t *m, desktop_t *d, node_t *n)
 {
-       if (d == NULL || n == NULL)
+       if (d == NULL || n == NULL) {
                return;
-
-       PRINTF("unlink node %X\n", n->client->window);
+       }
 
        node_t *p = n->parent;
 
@@ -843,93 +1121,107 @@ void unlink_node(monitor_t *m, desktop_t *d, node_t *n)
                d->root = NULL;
                d->focus = NULL;
        } else {
-               if (n->client->private)
-                       update_privacy_level(n, false);
+               if (d->focus == p || is_descendant(d->focus, n)) {
+                       d->focus = NULL;
+               }
 
-               node_t *b;
+               node_t *b = brother_tree(n);
                node_t *g = p->parent;
 
-               if (is_first_child(n)) {
-                       b = p->second_child;
-                       if (!n->vacant)
-                               unrotate_tree(b, n->birth_rotation);
-               } else {
-                       b = p->first_child;
-                       if (!n->vacant)
-                               unrotate_tree(b, n->birth_rotation);
+               if (!n->vacant) {
+                       unrotate_tree(b, n->birth_rotation);
                }
 
                b->parent = g;
 
                if (g != NULL) {
-                       if (is_first_child(p))
+                       if (is_first_child(p)) {
                                g->first_child = b;
-                       else
+                       } else {
                                g->second_child = b;
+                       }
                } else {
                        d->root = b;
                }
 
                b->birth_rotation = p->birth_rotation;
                n->parent = NULL;
-               free(p);
-               update_vacant_state(b->parent);
 
-               if (n == d->focus) {
-                       d->focus = history_get_node(d, n);
-                       // fallback to the first extrema (`n` is not reachable)
-                       if (d->focus == NULL)
-                               d->focus = first_extrema(d->root);
+               history_remove(d, p, false);
+               cancel_presel(m, d, p);
+               if (p->sticky) {
+                       m->sticky_count--;
                }
+               free(p);
+
+               propagate_vacant_state(m, d, b);
        }
-       if (n->client->sticky)
-               m->num_sticky--;
-       put_status();
 }
 
 void remove_node(monitor_t *m, desktop_t *d, node_t *n)
 {
-       if (n == NULL)
+       if (n == NULL) {
                return;
+       }
 
-       PRINTF("remove node %X\n", n->client->window);
+       node_t *last_focus = d->focus;
 
-       bool focused = (n == mon->desk->focus);
        unlink_node(m, d, n);
-       history_remove(d, n);
+       history_remove(d, n, true);
        remove_stack_node(n);
+       cancel_presel(m, d, n);
+       if (m->sticky_count > 0) {
+               m->sticky_count -= sticky_count(n);
+       }
+       clients_count -= clients_count_in(n);
        free(n->client);
        free(n);
 
-       num_clients--;
-       ewmh_update_client_list();
+       ewmh_update_client_list(false);
+       ewmh_update_client_list(true);
 
-       if (focused)
-               update_current();
+       if (d->focus != last_focus) {
+               if (d == mon->desk) {
+                       focus_node(m, d, d->focus);
+               } else {
+                       activate_node(m, d, d->focus);
+               }
+       }
 }
 
-void destroy_tree(node_t *n)
+void destroy_tree(monitor_t *m, desktop_t *d, node_t *n)
 {
-       if (n == NULL)
+       if (n == NULL) {
                return;
-       node_t *first_tree = n->first_child;
-       node_t *second_tree = n->second_child;
+       }
+       node_t *first_child = n->first_child;
+       node_t *second_child = n->second_child;
        if (n->client != NULL) {
-               free(n->client);
-               num_clients--;
+               remove_stack_node(n);
+               clients_count--;
+       }
+       if (n->sticky) {
+               m->sticky_count--;
        }
+       cancel_presel(m, d, n);
+       free(n->client);
        free(n);
-       destroy_tree(first_tree);
-       destroy_tree(second_tree);
+       if (first_child != NULL && second_child != NULL) {
+               first_child->parent = second_child->parent = NULL;
+               destroy_tree(m, d, first_child);
+               destroy_tree(m, d, second_child);
+       }
 }
 
 bool swap_nodes(monitor_t *m1, desktop_t *d1, node_t *n1, monitor_t *m2, desktop_t *d2, node_t *n2)
 {
-       if (n1 == NULL || n2 == NULL ||n1 == n2 ||
-           (d1 != d2 && (n1->client->sticky || n2->client->sticky)))
+       if (n1 == NULL || n2 == NULL || n1 == n2 || is_descendant(n1, n2) || is_descendant(n2, n1) ||
+           (d1 != d2 && ((m1->sticky_count > 0 && sticky_count(n1) > 0) ||
+                         (m2->sticky_count > 0 && sticky_count(n2) > 0)))) {
                return false;
+       }
 
-       PRINTF("swap nodes %X %X\n", n1->client->window, n2->client->window);
+       put_status(SBSC_MASK_NODE_SWAP, "node_swap %s %s 0x%X %s %s 0x%X\n", m1->name, d1->name, n1->id, m2->name, d2->name, n2->id);
 
        node_t *pn1 = n1->parent;
        node_t *pn2 = n2->parent;
@@ -937,68 +1229,97 @@ bool swap_nodes(monitor_t *m1, desktop_t *d1, node_t *n1, monitor_t *m2, desktop
        bool n2_first_child = is_first_child(n2);
        int br1 = n1->birth_rotation;
        int br2 = n2->birth_rotation;
-       int pl1 = n1->privacy_level;
-       int pl2 = n2->privacy_level;
+       bool n1_held_focus = is_descendant(d1->focus, n1);
+       bool n2_held_focus = is_descendant(d2->focus, n2);
+       node_t *last_d1_focus = d1->focus;
+       node_t *last_d2_focus = d2->focus;
 
        if (pn1 != NULL) {
-               if (n1_first_child)
+               if (n1_first_child) {
                        pn1->first_child = n2;
-               else
+               } else {
                        pn1->second_child = n2;
+               }
        }
 
        if (pn2 != NULL) {
-               if (n2_first_child)
+               if (n2_first_child) {
                        pn2->first_child = n1;
-               else
+               } else {
                        pn2->second_child = n1;
+               }
        }
 
        n1->parent = pn2;
        n2->parent = pn1;
        n1->birth_rotation = br2;
        n2->birth_rotation = br1;
-       n1->privacy_level = pl2;
-       n2->privacy_level = pl1;
 
        if (n1->vacant != n2->vacant) {
-               update_vacant_state(n1->parent);
-               update_vacant_state(n2->parent);
-       }
-
-       if (n1->client->private != n2->client->private) {
-               n1->client->private = !n1->client->private;
-               n2->client->private = !n2->client->private;
+               propagate_vacant_state(m2, d2, n1);
+               propagate_vacant_state(m1, d1, n2);
        }
 
        if (d1 != d2) {
-               if (d1->root == n1)
+               if (d1->root == n1) {
                        d1->root = n2;
-               if (d1->focus == n1)
-                       d1->focus = n2;
-               if (d2->root == n2)
+               }
+
+               if (d2->root == n2) {
                        d2->root = n1;
-               if (d2->focus == n2)
-                       d2->focus = n1;
+               }
+
+               if (n1_held_focus) {
+                       d1->focus = n2_held_focus ? last_d2_focus : n2;
+               }
+
+               if (n2_held_focus) {
+                       d2->focus = n1_held_focus ? last_d1_focus : n1;
+               }
 
                if (m1 != m2) {
-                       translate_client(m2, m1, n2->client);
-                       translate_client(m1, m2, n1->client);
+                       adapt_geometry(&m2->rectangle, &m1->rectangle, n2);
+                       adapt_geometry(&m1->rectangle, &m2->rectangle, n1);
                }
 
                ewmh_set_wm_desktop(n1, d2);
                ewmh_set_wm_desktop(n2, d1);
+
                history_swap_nodes(m1, d1, n1, m2, d2, n2);
 
                if (m1->desk != d1 && m2->desk == d2) {
-                       window_show(n1->client->window);
-                       window_hide(n2->client->window);
+                       show_node(n1);
+                       hide_node(n2);
                } else if (m1->desk == d1 && m2->desk != d2) {
-                       window_hide(n1->client->window);
-                       window_show(n2->client->window);
+                       hide_node(n1);
+                       show_node(n2);
+               }
+
+               if (n1_held_focus) {
+                       if (d1 == mon->desk) {
+                               focus_node(m1, d1, d1->focus);
+                       } else {
+                               activate_node(m1, d1, d1->focus);
+                       }
+               } else {
+                       draw_border(n2, is_descendant(n2, d1->focus), (m1 == mon));
+               }
+
+               if (n2_held_focus) {
+                       if (d2 == mon->desk) {
+                               focus_node(m2, d2, d2->focus);
+                       } else {
+                               activate_node(m2, d2, d2->focus);
+                       }
+               } else {
+                       draw_border(n1, is_descendant(n1, d2->focus), (m2 == mon));
                }
+       }
+
+       arrange(m1, d1);
 
-               update_input_focus();
+       if (d1 != d2) {
+               arrange(m2, d2);
        }
 
        return true;
@@ -1006,115 +1327,421 @@ bool swap_nodes(monitor_t *m1, desktop_t *d1, node_t *n1, monitor_t *m2, desktop
 
 bool transfer_node(monitor_t *ms, desktop_t *ds, node_t *ns, monitor_t *md, desktop_t *dd, node_t *nd)
 {
-       if (ns == NULL || ns == nd || (sticky_still && ns->client->sticky))
+       if (ns == NULL || ns == nd || is_child(ns, nd) || is_descendant(nd, ns)) {
                return false;
+       }
 
-       PRINTF("transfer node %X\n", ns->client->window);
+       unsigned int sc = 0;
 
-       bool focused = (ns == mon->desk->focus);
-       bool active = (ns == ds->focus);
+       if (sticky_still && ms->sticky_count > 0 && ds != dd && (sc = sticky_count(ns)) > 0) {
+               return false;
+       }
+
+       put_status(SBSC_MASK_NODE_TRANSFER, "node_transfer %s %s 0x%X %s %s 0x%X\n", ms->name, ds->name, ns->id, md->name, dd->name, nd!=NULL?nd->id:0);
+
+       bool held_focus = is_descendant(ds->focus, ns);
+       /* avoid ending up with a dangling pointer (because of unlink_node) */
+       node_t *last_ds_focus = is_child(ns, ds->focus) ? NULL : ds->focus;
 
-       if (focused)
+       if (held_focus && ds == mon->desk) {
                clear_input_focus();
+       }
 
        unlink_node(ms, ds, ns);
        insert_node(md, dd, ns, nd);
 
-       if (md != ms)
-               translate_client(ms, md, ns->client);
+       if (md != ms) {
+               adapt_geometry(&ms->rectangle, &md->rectangle, ns);
+       }
 
        if (ds != dd) {
                ewmh_set_wm_desktop(ns, dd);
-               if (!ns->client->sticky) {
-                       if (ds == ms->desk && dd != md->desk)
-                               window_hide(ns->client->window);
-                       else if (ds != ms->desk && dd == md->desk)
-                               window_show(ns->client->window);
+               if (sc == 0) {
+                       if (ds == ms->desk && dd != md->desk) {
+                               hide_node(ns);
+                       } else if (ds != ms->desk && dd == md->desk) {
+                               show_node(ns);
+                       }
                }
-               if (ns->client->fullscreen && dd->focus != ns)
-                       set_fullscreen(ns, false);
        }
 
        history_transfer_node(md, dd, ns);
-       stack(ns, STACK_BELOW);
+       stack(dd, ns, false);
 
        if (ds == dd) {
-               if (focused)
-                       focus_node(md, dd, ns);
-               else if (active)
-                       pseudo_focus(md, dd, ns);
+               if (held_focus) {
+                       if (ds == mon->desk) {
+                               focus_node(ms, ds, last_ds_focus);
+                       } else {
+                               activate_node(ms, ds, last_ds_focus);
+                       }
+               } else {
+                       draw_border(ns, is_descendant(ns, ds->focus), (ms == mon));
+               }
        } else {
-               if (focused)
-                       update_current();
-               else if (ns == mon->desk->focus)
-                       update_input_focus();
+               if (held_focus) {
+                       if (ds == mon->desk) {
+                               focus_node(ms, ds, ds->focus);
+                       } else {
+                               activate_node(ms, ds, ds->focus);
+                       }
+               }
+               if (dd->focus == ns) {
+                       if (dd == mon->desk) {
+                               focus_node(md, dd, held_focus ? last_ds_focus : dd->focus);
+                       } else {
+                               activate_node(md, dd, held_focus ? last_ds_focus : dd->focus);
+                       }
+               } else {
+                       draw_border(ns, is_descendant(ns, dd->focus), (md == mon));
+               }
        }
 
        arrange(ms, ds);
-       if (ds != dd)
+
+       if (ds != dd) {
                arrange(md, dd);
+       }
 
        return true;
 }
 
-node_t *closest_node(monitor_t *m, desktop_t *d, node_t *n, cycle_dir_t dir, client_select_t sel)
+node_t *closest_node(monitor_t *m, desktop_t *d, node_t *n, cycle_dir_t dir, node_select_t sel)
 {
-       if (n == NULL)
+       if (n == NULL) {
                return NULL;
+       }
 
        node_t *f = (dir == CYCLE_PREV ? prev_leaf(n, d->root) : next_leaf(n, d->root));
-       if (f == NULL)
+       if (f == NULL) {
                f = (dir == CYCLE_PREV ? second_extrema(d->root) : first_extrema(d->root));
+       }
 
        coordinates_t ref = {m, d, n};
        while (f != n) {
                coordinates_t loc = {m, d, f};
-               if (node_matches(&loc, &ref, sel))
+               if (node_matches(&loc, &ref, sel)) {
                        return f;
+               }
                f = (dir == CYCLE_PREV ? prev_leaf(f, d->root) : next_leaf(f, d->root));
-               if (f == NULL)
+               if (f == NULL) {
                        f = (dir == CYCLE_PREV ? second_extrema(d->root) : first_extrema(d->root));
+               }
        }
        return NULL;
 }
 
-void circulate_leaves(monitor_t *m, desktop_t *d, circulate_dir_t dir)
+void circulate_leaves(monitor_t *m, desktop_t *d, node_t *n, circulate_dir_t dir)
 {
-       if (d == NULL || d->root == NULL || d->focus == NULL || is_leaf(d->root))
+       if (d == NULL || d->root == NULL || d->focus == NULL || is_leaf(n)) {
                return;
+       }
        node_t *p = d->focus->parent;
        bool focus_first_child = is_first_child(d->focus);
-       if (dir == CIRCULATE_FORWARD)
-               for (node_t *s = second_extrema(d->root), *f = prev_tiled_leaf(d, s, d->root); f != NULL; s = prev_tiled_leaf(d, f, d->root), f = prev_tiled_leaf(d, s, d->root))
+       if (dir == CIRCULATE_FORWARD) {
+               for (node_t *s = second_extrema(n), *f = prev_tiled_leaf(d, s, n); f != NULL; s = prev_tiled_leaf(d, f, n), f = prev_tiled_leaf(d, s, n)) {
                        swap_nodes(m, d, f, m, d, s);
-       else
-               for (node_t *f = first_extrema(d->root), *s = next_tiled_leaf(d, f, d->root); s != NULL; f = next_tiled_leaf(d, s, d->root), s = next_tiled_leaf(d, f, d->root))
+               }
+       } else {
+               for (node_t *f = first_extrema(n), *s = next_tiled_leaf(d, f, n); s != NULL; f = next_tiled_leaf(d, s, n), s = next_tiled_leaf(d, f, n)) {
                        swap_nodes(m, d, f, m, d, s);
-       if (focus_first_child)
+               }
+       }
+       if (focus_first_child) {
                focus_node(m, d, p->first_child);
-       else
+       } else {
                focus_node(m, d, p->second_child);
+       }
 }
 
-void update_vacant_state(node_t *n)
+void set_vacant_state(monitor_t *m, desktop_t *d, node_t *n, bool value)
 {
-       if (n == NULL)
-               return;
+       n->vacant = value;
 
-       PUTS("update vacant state");
+       if (value) {
+               unrotate_brother(n);
+       } else {
+               rotate_brother(n);
+       }
 
-       /* n is not a leaf */
-       node_t *p = n;
+       if (value) {
+               cancel_presel(m, d, n);
+       }
+
+       propagate_vacant_state(m, d, n);
+}
+
+void propagate_vacant_state(monitor_t *m, desktop_t *d, node_t *n)
+{
+       if (n == NULL) {
+               return;
+       }
+
+       node_t *p = n->parent;
 
        while (p != NULL) {
                p->vacant = (p->first_child->vacant && p->second_child->vacant);
+               if (p->vacant) {
+                       cancel_presel(m, d, p);
+               }
                p = p->parent;
        }
 }
 
-void update_privacy_level(node_t *n, bool value)
+void set_layer(monitor_t *m, desktop_t *d, node_t *n, stack_layer_t l)
+{
+       if (n == NULL || n->client->layer == l) {
+               return;
+       }
+
+       n->client->last_layer = n->client->layer;
+       n->client->layer = l;
+
+       put_status(SBSC_MASK_NODE_LAYER, "node_layer %s %s 0x%X %s\n", m->name, d->name, n->id, LAYER_STR(l));
+
+       if (d->focus == n) {
+               neutralize_occluding_windows(m, d, n);
+       }
+
+       stack(d, n, (d->focus == n));
+}
+
+void set_state(monitor_t *m, desktop_t *d, node_t *n, client_state_t s)
+{
+       if (n == NULL || n->client->state == s) {
+               return;
+       }
+
+       client_t *c = n->client;
+
+       c->last_state = c->state;
+       c->state = s;
+
+       switch (c->last_state) {
+               case STATE_TILED:
+               case STATE_PSEUDO_TILED:
+                       break;
+               case STATE_FLOATING:
+                       set_floating(m, d, n, false);
+                       break;
+               case STATE_FULLSCREEN:
+                       set_fullscreen(m, d, n, false);
+                       break;
+       }
+
+       put_status(SBSC_MASK_NODE_STATE, "node_state %s %s 0x%X %s off\n", m->name, d->name, n->id, STATE_STR(c->last_state));
+
+       switch (c->state) {
+               case STATE_TILED:
+               case STATE_PSEUDO_TILED:
+                       break;
+               case STATE_FLOATING:
+                       set_floating(m, d, n, true);
+                       break;
+               case STATE_FULLSCREEN:
+                       set_fullscreen(m, d, n, true);
+                       break;
+       }
+
+       put_status(SBSC_MASK_NODE_STATE, "node_state %s %s 0x%X %s on\n", m->name, d->name, n->id, STATE_STR(c->state));
+
+       if (n == m->desk->focus) {
+               put_status(SBSC_MASK_REPORT);
+       }
+}
+
+void set_floating(monitor_t *m, desktop_t *d, node_t *n, bool value)
+{
+       if (n == NULL) {
+               return;
+       }
+
+       cancel_presel(m, d, n);
+       set_vacant_state(m, d, n, value);
+
+       if (!value && d->focus == n) {
+               neutralize_occluding_windows(m, d, n);
+       }
+
+       stack(d, n, (d->focus == n));
+}
+
+void set_fullscreen(monitor_t *m, desktop_t *d, node_t *n, bool value)
+{
+       if (n == NULL) {
+               return;
+       }
+
+       client_t *c = n->client;
+
+       cancel_presel(m, d, n);
+       set_vacant_state(m, d, n, value);
+
+       if (value) {
+               ewmh_wm_state_add(n, ewmh->_NET_WM_STATE_FULLSCREEN);
+               c->last_layer = c->layer;
+               c->layer = LAYER_ABOVE;
+       } else {
+               ewmh_wm_state_remove(n, ewmh->_NET_WM_STATE_FULLSCREEN);
+               c->layer = c->last_layer;
+               if (d->focus == n) {
+                       neutralize_occluding_windows(m, d, n);
+               }
+       }
+
+       stack(d, n, (d->focus == n));
+}
+
+void neutralize_occluding_windows(monitor_t *m, desktop_t *d, node_t *n)
+{
+       bool dirty = false;
+       for (node_t *f = first_extrema(n); f != NULL; f = next_leaf(f, n)) {
+               for (node_t *a = first_extrema(d->root); a != NULL; a = next_leaf(a, d->root)) {
+                       if (a != f && IS_FULLSCREEN(a->client) && stack_cmp(f->client, a->client) < 0) {
+                               set_state(m, d, a, a->client->last_state);
+                               dirty = true;
+                       }
+               }
+       }
+       if (dirty) {
+               arrange(m, d);
+       }
+}
+
+void set_locked(monitor_t *m, desktop_t *d, node_t *n, bool value)
+{
+       if (n == NULL || n->locked == value) {
+               return;
+       }
+
+       n->locked = value;
+
+       put_status(SBSC_MASK_NODE_FLAG, "node_flag %s %s 0x%X locked %s\n", m->name, d->name, n->id, ON_OFF_STR(value));
+
+       if (n == m->desk->focus) {
+               put_status(SBSC_MASK_REPORT);
+       }
+}
+
+void set_sticky(monitor_t *m, desktop_t *d, node_t *n, bool value)
+{
+       if (n == NULL || n->sticky == value) {
+               return;
+       }
+
+       if (d != m->desk) {
+               transfer_node(m, d, n, m, m->desk, m->desk->focus);
+       }
+
+       n->sticky = value;
+
+       if (value) {
+               ewmh_wm_state_add(n, ewmh->_NET_WM_STATE_STICKY);
+               m->sticky_count++;
+       } else {
+               ewmh_wm_state_remove(n, ewmh->_NET_WM_STATE_STICKY);
+               m->sticky_count--;
+       }
+
+       put_status(SBSC_MASK_NODE_FLAG, "node_flag %s %s 0x%X sticky %s\n", m->name, d->name, n->id, ON_OFF_STR(value));
+
+       if (n == m->desk->focus) {
+               put_status(SBSC_MASK_REPORT);
+       }
+
+}
+
+void set_private(monitor_t *m, desktop_t *d, node_t *n, bool value)
+{
+       if (n == NULL || n->private == value) {
+               return;
+       }
+
+       n->private = value;
+
+       put_status(SBSC_MASK_NODE_FLAG, "node_flag %s %s 0x%X private %s\n", m->name, d->name, n->id, ON_OFF_STR(value));
+
+       if (n == m->desk->focus) {
+               put_status(SBSC_MASK_REPORT);
+       }
+}
+
+void set_urgent(monitor_t *m, desktop_t *d, node_t *n, bool value)
+{
+       if (value && mon->desk->focus == n) {
+               return;
+       }
+
+       n->client->urgent = value;
+
+       put_status(SBSC_MASK_NODE_FLAG, "node_flag %s %s 0x%X urgent %s\n", m->name, d->name, n->id, ON_OFF_STR(value));
+       put_status(SBSC_MASK_REPORT);
+}
+
+/* Returns true if a contains b */
+bool contains(xcb_rectangle_t a, xcb_rectangle_t b)
 {
-       int v = (value ? 1 : -1);
-       for (node_t *p = n; p != NULL; p = p->parent)
-               p->privacy_level += v;
+       return (a.x <= b.x && (a.x + a.width) >= (b.x + b.width) &&
+               a.y <= b.y && (a.y + a.height) >= (b.y + b.height));
 }
+
+xcb_rectangle_t get_rectangle(desktop_t *d, node_t *n)
+{
+       client_t *c = n->client;
+       if (c != NULL) {
+               xcb_get_geometry_reply_t *g = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, n->id), NULL);
+               if (g != NULL) {
+                       xcb_rectangle_t rect = (xcb_rectangle_t) {g->x, g->y, g->width, g->height};
+                       free(g);
+                       return rect;
+               } else {
+                       return (xcb_rectangle_t) {0, 0, screen_width, screen_height};
+               }
+       } else {
+               int wg = (d == NULL ? 0 : (gapless_monocle && d->layout == LAYOUT_MONOCLE ? 0 : d->window_gap));
+               xcb_rectangle_t rect = n->rectangle;
+               rect.width -= wg;
+               rect.height -= wg;
+               return rect;
+       }
+}
+
+void get_side_handle(desktop_t *d, node_t *n, direction_t dir, xcb_point_t *pt)
+{
+       xcb_rectangle_t rect = get_rectangle(d, n);
+
+       switch (dir) {
+               case DIR_EAST:
+                       pt->x = rect.x + rect.width;
+                       pt->y = rect.y + (rect.height / 2);
+                       break;
+               case DIR_SOUTH:
+                       pt->x = rect.x + (rect.width / 2);
+                       pt->y = rect.y + rect.height;
+                       break;
+               case DIR_WEST:
+                       pt->x = rect.x;
+                       pt->y = rect.y + (rect.height / 2);
+                       break;
+               case DIR_NORTH:
+                       pt->x = rect.x + (rect.width / 2);
+                       pt->y = rect.y;
+                       break;
+       }
+}
+
+#define DEF_FLAG_COUNT(flag) \
+       unsigned int flag##_count(node_t *n) \
+       { \
+               if (n == NULL) { \
+                       return 0; \
+               } else { \
+                       return ((n->flag ? 1 : 0) + \
+                               flag##_count(n->first_child) + \
+                               flag##_count(n->second_child)); \
+               } \
+       }
+       DEF_FLAG_COUNT(sticky)
+       DEF_FLAG_COUNT(private)
+       DEF_FLAG_COUNT(locked)
+#undef DEF_FLAG_COUNT