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workspace.c
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workspace.c
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/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
*
* workspace.c: Modifying workspaces, accessing them, moving containers to
* workspaces.
*
*/
#include "all.h"
/* Stores a copy of the name of the last used workspace for the workspace
* back-and-forth switching. */
static char *previous_workspace_name = NULL;
/*
* Returns a pointer to the workspace with the given number (starting at 0),
* creating the workspace if necessary (by allocating the necessary amount of
* memory and initializing the data structures correctly).
*
*/
Con *workspace_get(const char *num, bool *created) {
Con *output, *workspace = NULL;
TAILQ_FOREACH(output, &(croot->nodes_head), nodes)
GREP_FIRST(workspace, output_get_content(output), !strcasecmp(child->name, num));
if (workspace == NULL) {
LOG("Creating new workspace \"%s\"\n", num);
/* unless an assignment is found, we will create this workspace on the current output */
output = con_get_output(focused);
/* look for assignments */
struct Workspace_Assignment *assignment;
TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
if (strcmp(assignment->name, num) != 0)
continue;
LOG("Found workspace assignment to output \"%s\"\n", assignment->output);
GREP_FIRST(output, croot, !strcmp(child->name, assignment->output));
break;
}
Con *content = output_get_content(output);
LOG("got output %p with content %p\n", output, content);
/* We need to attach this container after setting its type. con_attach
* will handle CT_WORKSPACEs differently */
workspace = con_new(NULL, NULL);
char *name;
sasprintf(&name, "[i3 con] workspace %s", num);
x_set_name(workspace, name);
free(name);
workspace->type = CT_WORKSPACE;
FREE(workspace->name);
workspace->name = sstrdup(num);
/* We set ->num to the number if this workspace’s name begins with a
* positive number. Otherwise it’s a named ws and num will be -1. */
char *endptr = NULL;
long parsed_num = strtol(num, &endptr, 10);
if (parsed_num == LONG_MIN ||
parsed_num == LONG_MAX ||
parsed_num < 0 ||
endptr == num)
workspace->num = -1;
else workspace->num = parsed_num;
LOG("num = %d\n", workspace->num);
/* If default_orientation is set to NO_ORIENTATION we
* determine workspace orientation from workspace size.
* Otherwise we just set the orientation to default_orientation. */
if (config.default_orientation == NO_ORIENTATION) {
workspace->orientation = (output->rect.height > output->rect.width) ? VERT : HORIZ;
DLOG("Auto orientation. Output resolution set to (%d,%d), setting orientation to %d.\n",
workspace->rect.width, workspace->rect.height, workspace->orientation);
} else {
workspace->orientation = config.default_orientation;
}
con_attach(workspace, content, false);
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"init\"}");
if (created != NULL)
*created = true;
}
else if (created != NULL) {
*created = false;
}
return workspace;
}
/*
* Returns a pointer to a new workspace in the given output. The workspace
* is created attached to the tree hierarchy through the given content
* container.
*
*/
Con *create_workspace_on_output(Output *output, Con *content) {
/* add a workspace to this output */
Con *out, *current;
char *name;
bool exists = true;
Con *ws = con_new(NULL, NULL);
ws->type = CT_WORKSPACE;
/* try the configured workspace bindings first to find a free name */
Binding *bind;
TAILQ_FOREACH(bind, bindings, bindings) {
DLOG("binding with command %s\n", bind->command);
if (strlen(bind->command) < strlen("workspace ") ||
strncasecmp(bind->command, "workspace", strlen("workspace")) != 0)
continue;
DLOG("relevant command = %s\n", bind->command);
char *target = bind->command + strlen("workspace ");
/* We check if this is the workspace
* next/prev/next_on_output/prev_on_output/back_and_forth command.
* Beware: The workspace names "next", "prev", "next_on_output",
* "prev_on_output" and "back_and_forth" are OK, so we check before
* stripping the double quotes */
if (strncasecmp(target, "next", strlen("next")) == 0 ||
strncasecmp(target, "prev", strlen("prev")) == 0 ||
strncasecmp(target, "next_on_output", strlen("next_on_output")) == 0 ||
strncasecmp(target, "prev_on_output", strlen("prev_on_output")) == 0 ||
strncasecmp(target, "back_and_forth", strlen("back_and_forth")) == 0)
continue;
if (*target == '"')
target++;
FREE(ws->name);
ws->name = strdup(target);
if (ws->name[strlen(ws->name)-1] == '"')
ws->name[strlen(ws->name)-1] = '\0';
DLOG("trying name *%s*\n", ws->name);
/* Ensure that this workspace is not assigned to a different output —
* otherwise we would create it, then move it over to its output, then
* find a new workspace, etc… */
bool assigned = false;
struct Workspace_Assignment *assignment;
TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
if (strcmp(assignment->name, ws->name) != 0 ||
strcmp(assignment->output, output->name) == 0)
continue;
assigned = true;
break;
}
if (assigned)
continue;
current = NULL;
TAILQ_FOREACH(out, &(croot->nodes_head), nodes)
GREP_FIRST(current, output_get_content(out), !strcasecmp(child->name, ws->name));
exists = (current != NULL);
if (!exists) {
/* Set ->num to the number of the workspace, if the name actually
* is a number or starts with a number */
char *endptr = NULL;
long parsed_num = strtol(ws->name, &endptr, 10);
if (parsed_num == LONG_MIN ||
parsed_num == LONG_MAX ||
parsed_num < 0 ||
endptr == ws->name)
ws->num = -1;
else ws->num = parsed_num;
LOG("Used number %d for workspace with name %s\n", ws->num, ws->name);
break;
}
}
if (exists) {
/* get the next unused workspace number */
DLOG("Getting next unused workspace by number\n");
int c = 0;
while (exists) {
c++;
FREE(ws->name);
sasprintf(&(ws->name), "%d", c);
current = NULL;
TAILQ_FOREACH(out, &(croot->nodes_head), nodes)
GREP_FIRST(current, output_get_content(out), !strcasecmp(child->name, ws->name));
exists = (current != NULL);
DLOG("result for ws %s / %d: exists = %d\n", ws->name, c, exists);
}
ws->num = c;
}
con_attach(ws, content, false);
sasprintf(&name, "[i3 con] workspace %s", ws->name);
x_set_name(ws, name);
free(name);
ws->fullscreen_mode = CF_OUTPUT;
/* If default_orientation is set to NO_ORIENTATION we determine
* orientation depending on output resolution. */
if (config.default_orientation == NO_ORIENTATION) {
ws->orientation = (output->rect.height > output->rect.width) ? VERT : HORIZ;
DLOG("Auto orientation. Workspace size set to (%d,%d), setting orientation to %d.\n",
output->rect.width, output->rect.height, ws->orientation);
} else {
ws->orientation = config.default_orientation;
}
return ws;
}
/*
* Returns true if the workspace is currently visible. Especially important for
* multi-monitor environments, as they can have multiple currenlty active
* workspaces.
*
*/
bool workspace_is_visible(Con *ws) {
Con *output = con_get_output(ws);
if (output == NULL)
return false;
Con *fs = con_get_fullscreen_con(output, CF_OUTPUT);
LOG("workspace visible? fs = %p, ws = %p\n", fs, ws);
return (fs == ws);
}
/*
* XXX: we need to clean up all this recursive walking code.
*
*/
Con *_get_sticky(Con *con, const char *sticky_group, Con *exclude) {
Con *current;
TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
if (current != exclude &&
current->sticky_group != NULL &&
current->window != NULL &&
strcmp(current->sticky_group, sticky_group) == 0)
return current;
Con *recurse = _get_sticky(current, sticky_group, exclude);
if (recurse != NULL)
return recurse;
}
TAILQ_FOREACH(current, &(con->floating_head), floating_windows) {
if (current != exclude &&
current->sticky_group != NULL &&
current->window != NULL &&
strcmp(current->sticky_group, sticky_group) == 0)
return current;
Con *recurse = _get_sticky(current, sticky_group, exclude);
if (recurse != NULL)
return recurse;
}
return NULL;
}
/*
* Reassigns all child windows in sticky containers. Called when the user
* changes workspaces.
*
* XXX: what about sticky containers which contain containers?
*
*/
static void workspace_reassign_sticky(Con *con) {
Con *current;
/* 1: go through all containers */
/* handle all children and floating windows of this node */
TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
if (current->sticky_group == NULL) {
workspace_reassign_sticky(current);
continue;
}
LOG("Ah, this one is sticky: %s / %p\n", current->name, current);
/* 2: find a window which we can re-assign */
Con *output = con_get_output(current);
Con *src = _get_sticky(output, current->sticky_group, current);
if (src == NULL) {
LOG("No window found for this sticky group\n");
workspace_reassign_sticky(current);
continue;
}
x_move_win(src, current);
current->window = src->window;
current->mapped = true;
src->window = NULL;
src->mapped = false;
x_reparent_child(current, src);
LOG("re-assigned window from src %p to dest %p\n", src, current);
}
TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
workspace_reassign_sticky(current);
}
static void _workspace_show(Con *workspace, bool changed_num_workspaces) {
Con *current, *old = NULL;
/* safe-guard against showing i3-internal workspaces like __i3_scratch */
if (workspace->name[0] == '_' && workspace->name[1] == '_')
return;
/* disable fullscreen for the other workspaces and get the workspace we are
* currently on. */
TAILQ_FOREACH(current, &(workspace->parent->nodes_head), nodes) {
if (current->fullscreen_mode == CF_OUTPUT)
old = current;
current->fullscreen_mode = CF_NONE;
}
/* enable fullscreen for the target workspace. If it happens to be the
* same one we are currently on anyways, we can stop here. */
workspace->fullscreen_mode = CF_OUTPUT;
current = con_get_workspace(focused);
if (workspace == current) {
DLOG("Not switching, already there.\n");
return;
}
/* Remember currently focused workspace for switching back to it later with
* the 'workspace back_and_forth' command.
* NOTE: We have to duplicate the name as the original will be freed when
* the corresponding workspace is cleaned up. */
FREE(previous_workspace_name);
if (current)
previous_workspace_name = sstrdup(current->name);
workspace_reassign_sticky(workspace);
LOG("switching to %p\n", workspace);
Con *next = con_descend_focused(workspace);
if (old && TAILQ_EMPTY(&(old->nodes_head)) && TAILQ_EMPTY(&(old->floating_head))) {
/* check if this workspace is currently visible */
if (!workspace_is_visible(old)) {
LOG("Closing old workspace (%p / %s), it is empty\n", old, old->name);
tree_close(old, DONT_KILL_WINDOW, false, false);
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}");
changed_num_workspaces = true;
}
}
/* Memorize current output */
Con *old_output = con_get_output(focused);
con_focus(next);
workspace->fullscreen_mode = CF_OUTPUT;
LOG("focused now = %p / %s\n", focused, focused->name);
/* Set mouse pointer */
Con *new_output = con_get_output(focused);
if (old_output != new_output) {
x_set_warp_to(&next->rect);
}
/* Update the EWMH hints */
ewmh_update_current_desktop();
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"focus\"}");
}
/*
* Switches to the given workspace
*
*/
void workspace_show(Con *workspace) {
_workspace_show(workspace, false);
}
/*
* Looks up the workspace by name and switches to it.
*
*/
void workspace_show_by_name(const char *num) {
Con *workspace;
bool changed_num_workspaces;
workspace = workspace_get(num, &changed_num_workspaces);
_workspace_show(workspace, changed_num_workspaces);
}
/*
* Focuses the next workspace.
*
*/
Con* workspace_next(void) {
Con *current = con_get_workspace(focused);
Con *next = NULL;
Con *output;
if (current->num == -1) {
/* If currently a named workspace, find next named workspace. */
next = TAILQ_NEXT(current, nodes);
} else {
/* If currently a numbered workspace, find next numbered workspace. */
TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
/* Skip outputs starting with __, they are internal. */
if (output->name[0] == '_' && output->name[1] == '_')
continue;
NODES_FOREACH(output_get_content(output)) {
if (child->type != CT_WORKSPACE)
continue;
if (child->num == -1)
break;
/* Need to check child against current and next because we are
* traversing multiple lists and thus are not guaranteed the
* relative order between the list of workspaces. */
if (current->num < child->num && (!next || child->num < next->num))
next = child;
}
}
}
/* Find next named workspace. */
if (!next) {
bool found_current = false;
TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
/* Skip outputs starting with __, they are internal. */
if (output->name[0] == '_' && output->name[1] == '_')
continue;
NODES_FOREACH(output_get_content(output)) {
if (child->type != CT_WORKSPACE)
continue;
if (child == current) {
found_current = 1;
} else if (child->num == -1 && (current->num != -1 || found_current)) {
next = child;
goto workspace_next_end;
}
}
}
}
/* Find first workspace. */
if (!next) {
TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
/* Skip outputs starting with __, they are internal. */
if (output->name[0] == '_' && output->name[1] == '_')
continue;
NODES_FOREACH(output_get_content(output)) {
if (child->type != CT_WORKSPACE)
continue;
if (!next || (child->num != -1 && child->num < next->num))
next = child;
}
}
}
workspace_next_end:
return next;
}
/*
* Focuses the previous workspace.
*
*/
Con* workspace_prev(void) {
Con *current = con_get_workspace(focused);
Con *prev = NULL;
Con *output;
if (current->num == -1) {
/* If named workspace, find previous named workspace. */
prev = TAILQ_PREV(current, nodes_head, nodes);
if (prev && prev->num != -1)
prev = NULL;
} else {
/* If numbered workspace, find previous numbered workspace. */
TAILQ_FOREACH_REVERSE(output, &(croot->nodes_head), nodes_head, nodes) {
/* Skip outputs starting with __, they are internal. */
if (output->name[0] == '_' && output->name[1] == '_')
continue;
NODES_FOREACH_REVERSE(output_get_content(output)) {
if (child->type != CT_WORKSPACE || child->num == -1)
continue;
/* Need to check child against current and previous because we
* are traversing multiple lists and thus are not guaranteed
* the relative order between the list of workspaces. */
if (current->num > child->num && (!prev || child->num > prev->num))
prev = child;
}
}
}
/* Find previous named workspace. */
if (!prev) {
bool found_current = false;
TAILQ_FOREACH_REVERSE(output, &(croot->nodes_head), nodes_head, nodes) {
/* Skip outputs starting with __, they are internal. */
if (output->name[0] == '_' && output->name[1] == '_')
continue;
NODES_FOREACH_REVERSE(output_get_content(output)) {
if (child->type != CT_WORKSPACE)
continue;
if (child == current) {
found_current = true;
} else if (child->num == -1 && (current->num != -1 || found_current)) {
prev = child;
goto workspace_prev_end;
}
}
}
}
/* Find last workspace. */
if (!prev) {
TAILQ_FOREACH_REVERSE(output, &(croot->nodes_head), nodes_head, nodes) {
/* Skip outputs starting with __, they are internal. */
if (output->name[0] == '_' && output->name[1] == '_')
continue;
NODES_FOREACH_REVERSE(output_get_content(output)) {
if (child->type != CT_WORKSPACE)
continue;
if (!prev || child->num > prev->num)
prev = child;
}
}
}
workspace_prev_end:
return prev;
}
/*
* Focuses the next workspace on the same output.
*
*/
Con* workspace_next_on_output(void) {
Con *current = con_get_workspace(focused);
Con *next = NULL;
Con *output = con_get_output(focused);
if (current->num == -1) {
/* If currently a named workspace, find next named workspace. */
next = TAILQ_NEXT(current, nodes);
} else {
/* If currently a numbered workspace, find next numbered workspace. */
NODES_FOREACH(output_get_content(output)) {
if (child->type != CT_WORKSPACE)
continue;
if (child->num == -1)
break;
/* Need to check child against current and next because we are
* traversing multiple lists and thus are not guaranteed the
* relative order between the list of workspaces. */
if (current->num < child->num && (!next || child->num < next->num))
next = child;
}
}
/* Find next named workspace. */
if (!next) {
bool found_current = false;
NODES_FOREACH(output_get_content(output)) {
if (child->type != CT_WORKSPACE)
continue;
if (child == current) {
found_current = 1;
} else if (child->num == -1 && (current->num != -1 || found_current)) {
next = child;
goto workspace_next_on_output_end;
}
}
}
/* Find first workspace. */
if (!next) {
NODES_FOREACH(output_get_content(output)) {
if (child->type != CT_WORKSPACE)
continue;
if (!next || (child->num != -1 && child->num < next->num))
next = child;
}
}
workspace_next_on_output_end:
return next;
}
/*
* Focuses the previous workspace on same output.
*
*/
Con* workspace_prev_on_output(void) {
Con *current = con_get_workspace(focused);
Con *prev = NULL;
Con *output = con_get_output(focused);
DLOG("output = %s\n", output->name);
if (current->num == -1) {
/* If named workspace, find previous named workspace. */
prev = TAILQ_PREV(current, nodes_head, nodes);
if (prev && prev->num != -1)
prev = NULL;
} else {
/* If numbered workspace, find previous numbered workspace. */
NODES_FOREACH_REVERSE(output_get_content(output)) {
if (child->type != CT_WORKSPACE || child->num == -1)
continue;
/* Need to check child against current and previous because we
* are traversing multiple lists and thus are not guaranteed
* the relative order between the list of workspaces. */
if (current->num > child->num && (!prev || child->num > prev->num))
prev = child;
}
}
/* Find previous named workspace. */
if (!prev) {
bool found_current = false;
NODES_FOREACH_REVERSE(output_get_content(output)) {
if (child->type != CT_WORKSPACE)
continue;
if (child == current) {
found_current = true;
} else if (child->num == -1 && (current->num != -1 || found_current)) {
prev = child;
goto workspace_prev_on_output_end;
}
}
}
/* Find last workspace. */
if (!prev) {
NODES_FOREACH_REVERSE(output_get_content(output)) {
if (child->type != CT_WORKSPACE)
continue;
if (!prev || child->num > prev->num)
prev = child;
}
}
workspace_prev_on_output_end:
return prev;
}
/*
* Focuses the previously focused workspace.
*
*/
void workspace_back_and_forth(void) {
if (!previous_workspace_name) {
DLOG("No previous workspace name set. Not switching.");
return;
}
workspace_show_by_name(previous_workspace_name);
}
static bool get_urgency_flag(Con *con) {
Con *child;
TAILQ_FOREACH(child, &(con->nodes_head), nodes)
if (child->urgent || get_urgency_flag(child))
return true;
TAILQ_FOREACH(child, &(con->floating_head), floating_windows)
if (child->urgent || get_urgency_flag(child))
return true;
return false;
}
/*
* Goes through all clients on the given workspace and updates the workspace’s
* urgent flag accordingly.
*
*/
void workspace_update_urgent_flag(Con *ws) {
bool old_flag = ws->urgent;
ws->urgent = get_urgency_flag(ws);
DLOG("Workspace urgency flag changed from %d to %d\n", old_flag, ws->urgent);
if (old_flag != ws->urgent)
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"urgent\"}");
}
/*
* 'Forces' workspace orientation by moving all cons into a new split-con with
* the same orientation as the workspace and then changing the workspace
* orientation.
*
*/
void ws_force_orientation(Con *ws, orientation_t orientation) {
/* 1: create a new split container */
Con *split = con_new(NULL, NULL);
split->parent = ws;
/* 2: copy layout and orientation from workspace */
split->layout = ws->layout;
split->orientation = ws->orientation;
Con *old_focused = TAILQ_FIRST(&(ws->focus_head));
/* 3: move the existing cons of this workspace below the new con */
DLOG("Moving cons\n");
while (!TAILQ_EMPTY(&(ws->nodes_head))) {
Con *child = TAILQ_FIRST(&(ws->nodes_head));
con_detach(child);
con_attach(child, split, true);
}
/* 4: switch workspace orientation */
ws->orientation = orientation;
/* 5: attach the new split container to the workspace */
DLOG("Attaching new split to ws\n");
con_attach(split, ws, false);
/* 6: fix the percentages */
con_fix_percent(ws);
if (old_focused)
con_focus(old_focused);
}
/*
* Called when a new con (with a window, not an empty or split con) should be
* attached to the workspace (for example when managing a new window or when
* moving an existing window to the workspace level).
*
* Depending on the workspace_layout setting, this function either returns the
* workspace itself (default layout) or creates a new stacked/tabbed con and
* returns that.
*
*/
Con *workspace_attach_to(Con *ws) {
DLOG("Attaching a window to workspace %p / %s\n", ws, ws->name);
if (config.default_layout == L_DEFAULT) {
DLOG("Default layout, just attaching it to the workspace itself.\n");
return ws;
}
DLOG("Non-default layout, creating a new split container\n");
/* 1: create a new split container */
Con *new = con_new(NULL, NULL);
new->parent = ws;
/* 2: set the requested layout on the split con */
new->layout = config.default_layout;
/* 3: While the layout is irrelevant in stacked/tabbed mode, it needs
* to be set. Otherwise, this con will not be interpreted as a split
* container. */
if (config.default_orientation == NO_ORIENTATION) {
new->orientation = (ws->rect.height > ws->rect.width) ? VERT : HORIZ;
} else {
new->orientation = config.default_orientation;
}
/* 4: attach the new split container to the workspace */
DLOG("Attaching new split %p to workspace %p\n", new, ws);
con_attach(new, ws, false);
return new;
}