2 #define I3__FILE__ "move.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
9 * move.c: Moving containers into some direction.
14 typedef enum { BEFORE, AFTER } position_t;
17 * This function detaches 'con' from its parent and inserts it either before or
21 static void insert_con_into(Con *con, Con *target, position_t position) {
22 Con *parent = target->parent;
23 /* We need to preserve the old con->parent. While it might still be used to
24 * insert the entry before/after it, we call the on_remove_child callback
25 * afterwards which might then close the con if it is empty. */
26 Con *old_parent = con->parent;
29 con_fix_percent(con->parent);
31 /* When moving to a workspace, we respect the user’s configured
33 if (parent->type == CT_WORKSPACE) {
34 Con *split = workspace_attach_to(parent);
35 if (split != parent) {
36 DLOG("Got a new split con, using that one instead\n");
38 con_attach(con, split, false);
41 con_fix_percent(split);
43 DLOG("ok, continuing with con %p instead\n", con);
50 if (position == BEFORE) {
51 TAILQ_INSERT_BEFORE(target, con, nodes);
52 TAILQ_INSERT_HEAD(&(parent->focus_head), con, focused);
53 } else if (position == AFTER) {
54 TAILQ_INSERT_AFTER(&(parent->nodes_head), target, con, nodes);
55 TAILQ_INSERT_HEAD(&(parent->focus_head), con, focused);
58 /* Pretend the con was just opened with regards to size percent values.
59 * Since the con is moved to a completely different con, the old value
60 * does not make sense anyways. */
62 con_fix_percent(parent);
64 CALL(old_parent, on_remove_child);
68 * This function detaches 'con' from its parent and inserts it at the given
72 static void attach_to_workspace(Con *con, Con *ws) {
74 con_fix_percent(con->parent);
76 CALL(con->parent, on_remove_child);
80 TAILQ_INSERT_TAIL(&(ws->nodes_head), con, nodes);
81 TAILQ_INSERT_TAIL(&(ws->focus_head), con, focused);
83 /* Pretend the con was just opened with regards to size percent values.
84 * Since the con is moved to a completely different con, the old value
85 * does not make sense anyways. */
91 * Moves the current container in the given direction (D_LEFT, D_RIGHT,
95 void tree_move(int direction) {
96 DLOG("Moving in direction %d\n", direction);
97 /* 1: get the first parent with the same orientation */
100 if (con->type == CT_WORKSPACE) {
101 DLOG("Not moving workspace\n");
105 if (con->parent->type == CT_WORKSPACE && con_num_children(con->parent) == 1) {
106 DLOG("This is the only con on this workspace, not doing anything\n");
110 orientation_t o = (direction == D_LEFT || direction == D_RIGHT ? HORIZ : VERT);
112 Con *same_orientation = con_parent_with_orientation(con, o);
113 /* The do {} while is used to 'restart' at this point with a different
114 * same_orientation, see the very last lines before the end of this block
117 /* There is no parent container with the same orientation */
118 if (!same_orientation) {
119 if (con_is_floating(con)) {
120 /* this is a floating con, we just disable floating */
121 floating_disable(con, true);
124 if (con_inside_floating(con)) {
125 /* 'con' should be moved out of a floating container */
126 DLOG("Inside floating, moving to workspace\n");
127 attach_to_workspace(con, con_get_workspace(con));
130 DLOG("Force-changing orientation\n");
131 ws_force_orientation(con_get_workspace(con), o);
132 same_orientation = con_parent_with_orientation(con, o);
135 /* easy case: the move is within this container */
136 if (same_orientation == con->parent) {
137 DLOG("We are in the same container\n");
139 if ((swap = (direction == D_LEFT || direction == D_UP ?
140 TAILQ_PREV(con, nodes_head, nodes) :
141 TAILQ_NEXT(con, nodes)))) {
142 if (!con_is_leaf(swap)) {
143 insert_con_into(con, con_descend_focused(swap), AFTER);
146 if (direction == D_LEFT || direction == D_UP)
147 TAILQ_SWAP(swap, con, &(swap->parent->nodes_head), nodes);
148 else TAILQ_SWAP(con, swap, &(swap->parent->nodes_head), nodes);
150 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
151 TAILQ_INSERT_HEAD(&(swap->parent->focus_head), con, focused);
157 /* If there was no con with which we could swap the current one, search
158 * again, but starting one level higher. If we are on the workspace
159 * level, don’t do that. The result would be a force change of
160 * workspace orientation, which is not necessary. */
161 if (con->parent == con_get_workspace(con))
163 same_orientation = con_parent_with_orientation(con->parent, o);
165 } while (same_orientation == NULL);
167 /* this time, we have to move to another container */
168 /* This is the container *above* 'con' (an ancestor of con) which is inside
169 * 'same_orientation' */
171 while (above->parent != same_orientation)
172 above = above->parent;
174 /* Enforce the fullscreen focus restrictions. */
175 if (!con_fullscreen_permits_focusing(above->parent)) {
176 LOG("Cannot move out of fullscreen container\n");
180 DLOG("above = %p\n", above);
183 if (direction == D_UP || direction == D_LEFT) {
185 next = TAILQ_PREV(above, nodes_head, nodes);
188 next = TAILQ_NEXT(above, nodes);
191 /* special case: there is a split container in the direction we are moving
192 * to, so descend and append */
193 if (next && !con_is_leaf(next))
194 insert_con_into(con, con_descend_focused(next), AFTER);
196 insert_con_into(con, above, position);
199 /* We need to call con_focus() to fix the focus stack "above" the container
200 * we just inserted the focused container into (otherwise, the parent
201 * container(s) would still point to the old container(s)). */
204 /* force re-painting the indicators */
205 FREE(con->deco_render_params);