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 puts it in the given
69 * workspace. Position is determined by the direction of movement into the
70 * workspace container.
73 static void attach_to_workspace(Con *con, Con *ws, direction_t direction) {
75 con_fix_percent(con->parent);
77 CALL(con->parent, on_remove_child);
81 if (direction == D_RIGHT || direction == D_DOWN) {
82 TAILQ_INSERT_HEAD(&(ws->nodes_head), con, nodes);
83 TAILQ_INSERT_HEAD(&(ws->focus_head), con, focused);
85 TAILQ_INSERT_TAIL(&(ws->nodes_head), con, nodes);
86 TAILQ_INSERT_TAIL(&(ws->focus_head), con, focused);
89 /* Pretend the con was just opened with regards to size percent values.
90 * Since the con is moved to a completely different con, the old value
91 * does not make sense anyways. */
97 * Moves the given container to the closest output in the given direction if
98 * such an output exists.
101 static void move_to_output_directed(Con *con, direction_t direction) {
102 Con *old_ws = con_get_workspace(con);
103 Con *current_output_con = con_get_output(con);
104 Output *current_output = get_output_by_name(current_output_con->name);
105 Output *output = get_output_next(direction, current_output, CLOSEST_OUTPUT);
108 DLOG("No output in this direction found. Not moving.\n");
113 GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
116 DLOG("No workspace on output in this direction found. Not moving.\n");
120 attach_to_workspace(con, ws, direction);
122 /* fix the focus stack */
125 /* force re-painting the indicators */
126 FREE(con->deco_render_params);
130 ipc_send_workspace_focus_event(ws, old_ws);
134 * Moves the current container in the given direction (D_LEFT, D_RIGHT,
138 void tree_move(int direction) {
142 DLOG("Moving in direction %d\n", direction);
144 /* 1: get the first parent with the same orientation */
147 if (con->type == CT_WORKSPACE) {
148 DLOG("Not moving workspace\n");
152 if (con->parent->type == CT_WORKSPACE && con_num_children(con->parent) == 1) {
153 /* This is the only con on this workspace */
154 move_to_output_directed(con, direction);
158 orientation_t o = (direction == D_LEFT || direction == D_RIGHT ? HORIZ : VERT);
160 Con *same_orientation = con_parent_with_orientation(con, o);
161 /* The do {} while is used to 'restart' at this point with a different
162 * same_orientation, see the very last lines before the end of this block
165 /* There is no parent container with the same orientation */
166 if (!same_orientation) {
167 if (con_is_floating(con)) {
168 /* this is a floating con, we just disable floating */
169 floating_disable(con, true);
172 if (con_inside_floating(con)) {
173 /* 'con' should be moved out of a floating container */
174 DLOG("Inside floating, moving to workspace\n");
175 attach_to_workspace(con, con_get_workspace(con), direction);
178 DLOG("Force-changing orientation\n");
179 ws_force_orientation(con_get_workspace(con), o);
180 same_orientation = con_parent_with_orientation(con, o);
183 /* easy case: the move is within this container */
184 if (same_orientation == con->parent) {
185 DLOG("We are in the same container\n");
187 if ((swap = (direction == D_LEFT || direction == D_UP ?
188 TAILQ_PREV(con, nodes_head, nodes) :
189 TAILQ_NEXT(con, nodes)))) {
190 if (!con_is_leaf(swap)) {
191 DLOG("Moving into our bordering branch\n");
192 target = con_descend_direction(swap, direction);
193 position = (con_orientation(target->parent) != o ||
195 direction == D_LEFT ?
197 insert_con_into(con, target, position);
200 if (direction == D_LEFT || direction == D_UP)
201 TAILQ_SWAP(swap, con, &(swap->parent->nodes_head), nodes);
202 else TAILQ_SWAP(con, swap, &(swap->parent->nodes_head), nodes);
204 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
205 TAILQ_INSERT_HEAD(&(swap->parent->focus_head), con, focused);
211 if (con->parent == con_get_workspace(con)) {
212 /* If we couldn't find a place to move it on this workspace,
213 * try to move it to a workspace on a different output */
214 move_to_output_directed(con, direction);
218 /* If there was no con with which we could swap the current one,
219 * search again, but starting one level higher. */
220 same_orientation = con_parent_with_orientation(con->parent, o);
222 } while (same_orientation == NULL);
224 /* this time, we have to move to another container */
225 /* This is the container *above* 'con' (an ancestor of con) which is inside
226 * 'same_orientation' */
228 while (above->parent != same_orientation)
229 above = above->parent;
231 /* Enforce the fullscreen focus restrictions. */
232 if (!con_fullscreen_permits_focusing(above->parent)) {
233 LOG("Cannot move out of fullscreen container\n");
237 DLOG("above = %p\n", above);
239 Con *next = (direction == D_UP || direction == D_LEFT ?
240 TAILQ_PREV(above, nodes_head, nodes) :
241 TAILQ_NEXT(above, nodes));
243 if (next && !con_is_leaf(next)) {
244 DLOG("Moving into the bordering branch of our adjacent container\n");
245 target = con_descend_direction(next, direction);
246 position = (con_orientation(target->parent) != o ||
248 direction == D_LEFT ?
250 insert_con_into(con, target, position);
252 DLOG("Moving into container above\n");
253 position = (direction == D_UP || direction == D_LEFT ? BEFORE : AFTER);
254 insert_con_into(con, above, position);
258 /* We need to call con_focus() to fix the focus stack "above" the container
259 * we just inserted the focused container into (otherwise, the parent
260 * container(s) would still point to the old container(s)). */
263 /* force re-painting the indicators */
264 FREE(con->deco_render_params);