2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
7 * move.c: Moving containers into some direction.
12 typedef enum { BEFORE, AFTER } position_t;
15 * This function detaches 'con' from its parent and inserts it either before or
19 static void insert_con_into(Con *con, Con *target, position_t position) {
20 Con *parent = target->parent;
21 /* We need to preserve the old con->parent. While it might still be used to
22 * insert the entry before/after it, we call the on_remove_child callback
23 * afterwards which might then close the con if it is empty. */
24 Con *old_parent = con->parent;
27 con_fix_percent(con->parent);
29 /* When moving to a workspace, we respect the user’s configured
31 if (parent->type == CT_WORKSPACE) {
32 Con *split = workspace_attach_to(parent);
33 if (split != parent) {
34 DLOG("Got a new split con, using that one instead\n");
36 con_attach(con, split, false);
39 con_fix_percent(split);
41 DLOG("ok, continuing with con %p instead\n", con);
48 if (position == BEFORE) {
49 TAILQ_INSERT_BEFORE(target, con, nodes);
50 TAILQ_INSERT_HEAD(&(parent->focus_head), con, focused);
51 } else if (position == AFTER) {
52 TAILQ_INSERT_AFTER(&(parent->nodes_head), target, con, nodes);
53 TAILQ_INSERT_HEAD(&(parent->focus_head), con, focused);
56 /* Pretend the con was just opened with regards to size percent values.
57 * Since the con is moved to a completely different con, the old value
58 * does not make sense anyways. */
60 con_fix_percent(parent);
62 CALL(old_parent, on_remove_child);
66 * This function detaches 'con' from its parent and inserts it at the given
70 static void attach_to_workspace(Con *con, Con *ws) {
72 con_fix_percent(con->parent);
74 CALL(con->parent, on_remove_child);
78 TAILQ_INSERT_TAIL(&(ws->nodes_head), con, nodes);
79 TAILQ_INSERT_TAIL(&(ws->focus_head), con, focused);
81 /* Pretend the con was just opened with regards to size percent values.
82 * Since the con is moved to a completely different con, the old value
83 * does not make sense anyways. */
89 * Moves the current container in the given direction (D_LEFT, D_RIGHT,
93 void tree_move(int direction) {
94 DLOG("Moving in direction %d\n", direction);
95 /* 1: get the first parent with the same orientation */
98 if (con->type == CT_WORKSPACE) {
99 DLOG("Not moving workspace\n");
103 if (con->parent->type == CT_WORKSPACE && con_num_children(con->parent) == 1) {
104 DLOG("This is the only con on this workspace, not doing anything\n");
108 orientation_t o = (direction == D_LEFT || direction == D_RIGHT ? HORIZ : VERT);
110 Con *same_orientation = con_parent_with_orientation(con, o);
111 /* The do {} while is used to 'restart' at this point with a different
112 * same_orientation, see the very last lines before the end of this block
115 /* There is no parent container with the same orientation */
116 if (!same_orientation) {
117 if (con_is_floating(con)) {
118 /* this is a floating con, we just disable floating */
119 floating_disable(con, true);
122 if (con_inside_floating(con)) {
123 /* 'con' should be moved out of a floating container */
124 DLOG("Inside floating, moving to workspace\n");
125 attach_to_workspace(con, con_get_workspace(con));
128 DLOG("Force-changing orientation\n");
129 ws_force_orientation(con_get_workspace(con), o);
130 same_orientation = con_parent_with_orientation(con, o);
133 /* easy case: the move is within this container */
134 if (same_orientation == con->parent) {
135 DLOG("We are in the same container\n");
137 if ((swap = (direction == D_LEFT || direction == D_UP ?
138 TAILQ_PREV(con, nodes_head, nodes) :
139 TAILQ_NEXT(con, nodes)))) {
140 if (!con_is_leaf(swap)) {
141 insert_con_into(con, con_descend_focused(swap), AFTER);
144 if (direction == D_LEFT || direction == D_UP)
145 TAILQ_SWAP(swap, con, &(swap->parent->nodes_head), nodes);
146 else TAILQ_SWAP(con, swap, &(swap->parent->nodes_head), nodes);
148 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
149 TAILQ_INSERT_HEAD(&(swap->parent->focus_head), con, focused);
155 /* If there was no con with which we could swap the current one, search
156 * again, but starting one level higher. If we are on the workspace
157 * level, don’t do that. The result would be a force change of
158 * workspace orientation, which is not necessary. */
159 if (con->parent == con_get_workspace(con))
161 same_orientation = con_parent_with_orientation(con->parent, o);
163 } while (same_orientation == NULL);
165 /* this time, we have to move to another container */
166 /* This is the container *above* 'con' (an ancestor of con) which is inside
167 * 'same_orientation' */
169 while (above->parent != same_orientation)
170 above = above->parent;
172 /* Enforce the fullscreen focus restrictions. */
173 if (!con_fullscreen_permits_focusing(above->parent)) {
174 LOG("Cannot move out of fullscreen container\n");
178 DLOG("above = %p\n", above);
181 if (direction == D_UP || direction == D_LEFT) {
183 next = TAILQ_PREV(above, nodes_head, nodes);
186 next = TAILQ_NEXT(above, nodes);
189 /* special case: there is a split container in the direction we are moving
190 * to, so descend and append */
191 if (next && !con_is_leaf(next))
192 insert_con_into(con, con_descend_focused(next), AFTER);
194 insert_con_into(con, above, position);
197 /* We need to call con_focus() to fix the focus stack "above" the container
198 * we just inserted the focused container into (otherwise, the parent
199 * container(s) would still point to the old container(s)). */
202 /* force re-painting the indicators */
203 FREE(con->deco_render_params);