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i3/src/manage.c
Michael Stapelberg 3d1acd6c2f re-implement assigning windows to workspaces
2011-05-02 23:29:26 +02:00

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/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE)
*
* manage.c: Contains all functions for initially managing new windows
* (or existing ones on restart).
*
*/
#include "all.h"
/*
* Go through all existing windows (if the window manager is restarted) and manage them
*
*/
void manage_existing_windows(xcb_window_t root) {
xcb_query_tree_reply_t *reply;
int i, len;
xcb_window_t *children;
xcb_get_window_attributes_cookie_t *cookies;
/* Get the tree of windows whose parent is the root window (= all) */
if ((reply = xcb_query_tree_reply(conn, xcb_query_tree(conn, root), 0)) == NULL)
return;
len = xcb_query_tree_children_length(reply);
cookies = smalloc(len * sizeof(*cookies));
/* Request the window attributes for every window */
children = xcb_query_tree_children(reply);
for (i = 0; i < len; ++i)
cookies[i] = xcb_get_window_attributes(conn, children[i]);
/* Call manage_window with the attributes for every window */
for (i = 0; i < len; ++i)
manage_window(children[i], cookies[i], true);
free(reply);
free(cookies);
}
/*
* Restores the geometry of each window by reparenting it to the root window
* at the position of its frame.
*
* This is to be called *only* before exiting/restarting i3 because of evil
* side-effects which are to be expected when continuing to run i3.
*
*/
void restore_geometry() {
DLOG("Restoring geometry\n");
Con *con;
TAILQ_FOREACH(con, &all_cons, all_cons)
if (con->window) {
DLOG("Re-adding X11 border of %d px\n", con->border_width);
con->window_rect.width += (2 * con->border_width);
con->window_rect.height += (2 * con->border_width);
xcb_set_window_rect(conn, con->window->id, con->window_rect);
DLOG("placing window %08x at %d %d\n", con->window->id, con->rect.x, con->rect.y);
xcb_reparent_window(conn, con->window->id, root,
con->rect.x, con->rect.y);
}
/* Make sure our changes reach the X server, we restart/exit now */
xcb_flush(conn);
}
/*
* Do some sanity checks and then reparent the window.
*
*/
void manage_window(xcb_window_t window, xcb_get_window_attributes_cookie_t cookie,
bool needs_to_be_mapped) {
xcb_drawable_t d = { window };
xcb_get_geometry_cookie_t geomc;
xcb_get_geometry_reply_t *geom;
xcb_get_window_attributes_reply_t *attr = 0;
DLOG("---> looking at window 0x%08x\n", window);
xcb_get_property_cookie_t wm_type_cookie, strut_cookie, state_cookie,
utf8_title_cookie, title_cookie,
class_cookie, leader_cookie, transient_cookie;
geomc = xcb_get_geometry(conn, d);
/* Check if the window is mapped (it could be not mapped when intializing and
calling manage_window() for every window) */
if ((attr = xcb_get_window_attributes_reply(conn, cookie, 0)) == NULL) {
DLOG("Could not get attributes\n");
return;
}
if (needs_to_be_mapped && attr->map_state != XCB_MAP_STATE_VIEWABLE) {
DLOG("map_state unviewable\n");
goto out;
}
/* Don’t manage clients with the override_redirect flag */
DLOG("override_redirect is %d\n", attr->override_redirect);
if (attr->override_redirect)
goto out;
/* Check if the window is already managed */
if (con_by_window_id(window) != NULL) {
DLOG("already managed (by con %p)\n", con_by_window_id(window));
goto out;
}
/* Get the initial geometry (position, size, …) */
if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL) {
DLOG("could not get geometry\n");
goto out;
}
uint32_t mask = 0;
uint32_t values[1];
/* Set a temporary event mask for the new window, consisting only of
* PropertyChange. We need to be notified of PropertyChanges because the
* client can change its properties *after* we requested them but *before*
* we actually reparented it and have set our final event mask. */
mask = XCB_CW_EVENT_MASK;
values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE;
xcb_change_window_attributes(conn, window, mask, values);
#define GET_PROPERTY(atom, len) xcb_get_property_unchecked(conn, false, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, len)
wm_type_cookie = GET_PROPERTY(A__NET_WM_WINDOW_TYPE, UINT32_MAX);
strut_cookie = GET_PROPERTY(A__NET_WM_STRUT_PARTIAL, UINT32_MAX);
state_cookie = GET_PROPERTY(A__NET_WM_STATE, UINT32_MAX);
utf8_title_cookie = GET_PROPERTY(A__NET_WM_NAME, 128);
leader_cookie = GET_PROPERTY(A_WM_CLIENT_LEADER, UINT32_MAX);
transient_cookie = GET_PROPERTY(A_WM_TRANSIENT_FOR, UINT32_MAX);
title_cookie = GET_PROPERTY(A_WM_NAME, 128);
class_cookie = GET_PROPERTY(A_WM_CLASS, 128);
/* TODO: also get wm_normal_hints here. implement after we got rid of xcb-event */
DLOG("reparenting!\n");
i3Window *cwindow = scalloc(sizeof(i3Window));
cwindow->id = window;
/* We need to grab the mouse buttons for click to focus */
xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
1 /* left mouse button */,
XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
3 /* right mouse button */,
XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
/* update as much information as possible so far (some replies may be NULL) */
window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL));
window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL));
window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL));
window_update_leader(cwindow, xcb_get_property_reply(conn, leader_cookie, NULL));
window_update_transient_for(cwindow, xcb_get_property_reply(conn, transient_cookie, NULL));
window_update_strut_partial(cwindow, xcb_get_property_reply(conn, strut_cookie, NULL));
/* check if the window needs WM_TAKE_FOCUS */
cwindow->needs_take_focus = window_supports_protocol(cwindow->id, A_WM_TAKE_FOCUS);
/* Where to start searching for a container that swallows the new one? */
Con *search_at = croot;
xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DOCK)) {
LOG("This window is of type dock\n");
Output *output = get_output_containing(geom->x, geom->y);
if (output != NULL) {
DLOG("Starting search at output %s\n", output->name);
search_at = output->con;
}
/* find out the desired position of this dock window */
if (cwindow->reserved.top > 0 && cwindow->reserved.bottom == 0) {
DLOG("Top dock client\n");
cwindow->dock = W_DOCK_TOP;
} else if (cwindow->reserved.top == 0 && cwindow->reserved.bottom > 0) {
DLOG("Bottom dock client\n");
cwindow->dock = W_DOCK_BOTTOM;
} else {
DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
if (geom->y < (search_at->rect.height / 2)) {
DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
geom->y, (search_at->rect.height / 2));
cwindow->dock = W_DOCK_TOP;
} else {
DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
geom->y, (search_at->rect.height / 2));
cwindow->dock = W_DOCK_BOTTOM;
}
}
}
DLOG("Initial geometry: (%d, %d, %d, %d)\n", geom->x, geom->y, geom->width, geom->height);
Con *nc = NULL;
Match *match;
/* check assignments first */
if ((match = match_by_assignment(cwindow))) {
DLOG("Assignment matches (%p)\n", match);
if (match->insert_where == M_ASSIGN_WS) {
nc = con_descend_focused(workspace_get(match->target_ws, NULL));
DLOG("focused on ws %s: %p / %s\n", match->target_ws, nc, nc->name);
if (nc->type == CT_WORKSPACE)
nc = tree_open_con(nc);
else nc = tree_open_con(nc->parent);
}
} else {
/* TODO: two matches for one container */
/* See if any container swallows this new window */
nc = con_for_window(search_at, cwindow, &match);
if (nc == NULL) {
if (focused->type == CT_CON && con_accepts_window(focused)) {
LOG("using current container, focused = %p, focused->name = %s\n",
focused, focused->name);
nc = focused;
} else nc = tree_open_con(NULL);
} else {
/* M_BELOW inserts the new window as a child of the one which was
* matched (e.g. dock areas) */
if (match != NULL && match->insert_where == M_BELOW) {
nc = tree_open_con(nc);
}
}
}
DLOG("new container = %p\n", nc);
nc->window = cwindow;
x_reinit(nc);
nc->border_width = geom->border_width;
char *name;
asprintf(&name, "[i3 con] container around %p", cwindow);
x_set_name(nc, name);
free(name);
Con *ws = con_get_workspace(nc);
Con *fs = (ws ? con_get_fullscreen_con(ws) : NULL);
if (fs == NULL) {
DLOG("Not in fullscreen mode, focusing\n");
if (!cwindow->dock)
con_focus(nc);
else DLOG("dock, not focusing\n");
} else {
DLOG("fs = %p, ws = %p, not focusing\n", fs, ws);
/* Insert the new container in focus stack *after* the currently
* focused (fullscreen) con. This way, the new container will be
* focused after we return from fullscreen mode */
Con *first = TAILQ_FIRST(&(nc->parent->focus_head));
TAILQ_REMOVE(&(nc->parent->focus_head), nc, focused);
TAILQ_INSERT_AFTER(&(nc->parent->focus_head), first, nc, focused);
}
/* set floating if necessary */
bool want_floating = false;
if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DIALOG) ||
xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_UTILITY) ||
xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_TOOLBAR) ||
xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_SPLASH)) {
LOG("This window is a dialog window, setting floating\n");
want_floating = true;
}
if (cwindow->transient_for != XCB_NONE ||
(cwindow->leader != XCB_NONE &&
cwindow->leader != cwindow->id &&
con_by_window_id(cwindow->leader) != NULL)) {
LOG("This window is transiert for another window, setting floating\n");
want_floating = true;
if (config.popup_during_fullscreen == PDF_LEAVE_FULLSCREEN &&
fs != NULL) {
LOG("There is a fullscreen window, leaving fullscreen mode\n");
con_toggle_fullscreen(fs);
}
}
/* dock clients cannot be floating, that makes no sense */
if (cwindow->dock)
want_floating = false;
/* Store the requested geometry. The width/height gets raised to at least
* 75x50 when entering floating mode, which is the minimum size for a
* window to be useful (smaller windows are usually overlays/toolbars/…
* which are not managed by the wm anyways). We store the original geometry
* here because it’s used for dock clients. */
nc->geometry = (Rect){ geom->x, geom->y, geom->width, geom->height };
if (want_floating) {
DLOG("geometry = %d x %d\n", nc->geometry.width, nc->geometry.height);
floating_enable(nc, false);
}
/* to avoid getting an UnmapNotify event due to reparenting, we temporarily
* declare no interest in any state change event of this window */
values[0] = XCB_NONE;
xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
if (xcb_request_check(conn, rcookie) != NULL) {
LOG("Could not reparent the window, aborting\n");
goto out;
}
mask = XCB_CW_EVENT_MASK;
values[0] = CHILD_EVENT_MASK;
xcb_change_window_attributes(conn, window, mask, values);
reply = xcb_get_property_reply(conn, state_cookie, NULL);
if (xcb_reply_contains_atom(reply, A__NET_WM_STATE_FULLSCREEN))
con_toggle_fullscreen(nc);
/* Put the client inside the save set. Upon termination (whether killed or
* normal exit does not matter) of the window manager, these clients will
* be correctly reparented to their most closest living ancestor (=
* cleanup) */
xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
tree_render();
free(geom);
out:
free(attr);
return;
}
#if 0
void reparent_window(xcb_connection_t *conn, xcb_window_t child,
xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
int16_t x, int16_t y, uint16_t width, uint16_t height,
uint32_t border_width) {
/* Minimum useful size for managed windows is 75x50 (primarily affects floating) */
width = max(width, 75);
height = max(height, 50);
if (config.default_border != NULL)
client_init_border(conn, new, config.default_border[1]);
/* We need to grab the mouse buttons for click to focus */
xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
1 /* left mouse button */,
XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
3 /* right mouse button */,
XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
if (dock) {
DLOG("Window is a dock.\n");
Output *t_out = get_output_containing(x, y);
if (t_out != c_ws->output) {
DLOG("Dock client requested to be on output %s by geometry (%d, %d)\n",
t_out->name, x, y);
new->workspace = t_out->current_workspace;
}
new->dock = true;
new->borderless = true;
new->titlebar_position = TITLEBAR_OFF;
new->force_reconfigure = true;
new->container = NULL;
SLIST_INSERT_HEAD(&(t_out->dock_clients), new, dock_clients);
/* If it’s a dock we can’t make it float, so we break */
new->floating = FLOATING_AUTO_OFF;
}
/* All clients which have a leader should be floating */
if (!new->dock && !client_is_floating(new) && new->leader != 0) {
DLOG("Client has WM_CLIENT_LEADER hint set, setting floating\n");
new->floating = FLOATING_AUTO_ON;
}
if (new->workspace->auto_float) {
new->floating = FLOATING_AUTO_ON;
DLOG("workspace is in autofloat mode, setting floating\n");
}
if (new->dock) {
/* Get _NET_WM_STRUT_PARTIAL to determine the client’s requested height */
uint32_t *strut;
preply = xcb_get_property_reply(conn, strut_cookie, NULL);
if (preply != NULL && preply->value_len > 0 && (strut = xcb_get_property_value(preply))) {
/* We only use a subset of the provided values, namely the reserved space at the top/bottom
of the screen. This is because the only possibility for bars is at to be at the top/bottom
with maximum horizontal size.
TODO: bars at the top */
new->desired_height = strut[3];
if (new->desired_height == 0) {
DLOG("Client wanted to be 0 pixels high, using the window's height (%d)\n", original_height);
new->desired_height = original_height;
}
DLOG("the client wants to be %d pixels high\n", new->desired_height);
} else {
DLOG("The client didn't specify space to reserve at the screen edge, using its height (%d)\n", original_height);
new->desired_height = original_height;
}
} else {
/* If it’s not a dock, we can check on which workspace we should put it. */
/* Firstly, we need to get the window’s class / title. We asked for the properties at the
* top of this function, get them now and pass them to our callback function for window class / title
* changes. It is important that the client was already inserted into the by_child table,
* because the callbacks won’t work otherwise. */
preply = xcb_get_property_reply(conn, utf8_title_cookie, NULL);
handle_windowname_change(NULL, conn, 0, new->child, atoms[_NET_WM_NAME], preply);
preply = xcb_get_property_reply(conn, title_cookie, NULL);
handle_windowname_change_legacy(NULL, conn, 0, new->child, WM_NAME, preply);
preply = xcb_get_property_reply(conn, class_cookie, NULL);
handle_windowclass_change(NULL, conn, 0, new->child, WM_CLASS, preply);
/* if WM_CLIENT_LEADER is set, we put the new window on the
* same window as its leader. This might be overwritten by
* assignments afterwards. */
if (new->leader != XCB_NONE) {
DLOG("client->leader is set (to 0x%08x)\n", new->leader);
Client *parent = table_get(&by_child, new->leader);
if (parent != NULL && parent->container != NULL) {
Workspace *t_ws = parent->workspace;
new->container = t_ws->table[parent->container->col][parent->container->row];
new->workspace = t_ws;
old_focused = new->container->currently_focused;
map_frame = workspace_is_visible(t_ws);
new->urgent = true;
/* This is a little tricky: we cannot use
* workspace_update_urgent_flag() because the
* new window was not yet inserted into the
* focus stack on t_ws. */
t_ws->urgent = true;
} else {
DLOG("parent is not usable\n");
}
}
struct Assignment *assign;
TAILQ_FOREACH(assign, &assignments, assignments) {
if (get_matching_client(conn, assign->windowclass_title, new) == NULL)
continue;
if (assign->floating == ASSIGN_FLOATING_ONLY ||
assign->floating == ASSIGN_FLOATING) {
new->floating = FLOATING_AUTO_ON;
LOG("Assignment matches, putting client into floating mode\n");
if (assign->floating == ASSIGN_FLOATING_ONLY)
break;
}
LOG("Assignment \"%s\" matches, so putting it on workspace %d\n",
assign->windowclass_title, assign->workspace);
if (c_ws->output->current_workspace->num == (assign->workspace-1)) {
DLOG("We are already there, no need to do anything\n");
break;
}
DLOG("Changing container/workspace and unmapping the client\n");
Workspace *t_ws = workspace_get(assign->workspace-1, NULL);
workspace_initialize(t_ws, c_ws->output, false);
new->container = t_ws->table[t_ws->current_col][t_ws->current_row];
new->workspace = t_ws;
old_focused = new->container->currently_focused;
map_frame = workspace_is_visible(t_ws);
break;
}
}
if (client_is_floating(new)) {
SLIST_INSERT_HEAD(&(new->workspace->focus_stack), new, focus_clients);
/* Add the client to the list of floating clients for its workspace */
TAILQ_INSERT_TAIL(&(new->workspace->floating_clients), new, floating_clients);
new->container = NULL;
new->rect.width = new->floating_rect.width + 2 + 2;
new->rect.height = new->floating_rect.height + (font->height + 2 + 2) + 2;
/* Some clients (like GIMP’s color picker window) get mapped
* to (0, 0), so we push them to a reasonable position
* (centered over their leader) */
if (new->leader != 0 && x == 0 && y == 0) {
DLOG("Floating client wants to (0x0), moving it over its leader instead\n");
Client *leader = table_get(&by_child, new->leader);
if (leader == NULL) {
DLOG("leader is NULL, centering it over current workspace\n");
x = c_ws->rect.x + (c_ws->rect.width / 2) - (new->rect.width / 2);
y = c_ws->rect.y + (c_ws->rect.height / 2) - (new->rect.height / 2);
} else {
x = leader->rect.x + (leader->rect.width / 2) - (new->rect.width / 2);
y = leader->rect.y + (leader->rect.height / 2) - (new->rect.height / 2);
}
}
new->floating_rect.x = new->rect.x = x;
new->floating_rect.y = new->rect.y = y;
DLOG("copying floating_rect from tiling (%d, %d) size (%d, %d)\n",
new->floating_rect.x, new->floating_rect.y,
new->floating_rect.width, new->floating_rect.height);
DLOG("outer rect (%d, %d) size (%d, %d)\n",
new->rect.x, new->rect.y, new->rect.width, new->rect.height);
/* Make sure it is on top of the other windows */
xcb_raise_window(conn, new->frame);
reposition_client(conn, new);
resize_client(conn, new);
/* redecorate_window flushes */
redecorate_window(conn, new);
}
new->initialized = true;
render_layout(conn);
map:
/* Map the window first to avoid flickering */
xcb_map_window(conn, child);
if (map_frame)
client_map(conn, new);
if ((CUR_CELL->workspace->fullscreen_client == NULL || new->fullscreen) && !new->dock) {
/* Focus the new window if we’re not in fullscreen mode and if it is not a dock window */
if ((new->workspace->fullscreen_client == NULL) || new->fullscreen) {
if (!client_is_floating(new)) {
new->container->currently_focused = new;
if (map_frame)
render_container(conn, new->container);
}
if (new->container == CUR_CELL || client_is_floating(new)) {
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, new->child, XCB_CURRENT_TIME);
ewmh_update_active_window(new->child);
}
}
}
xcb_flush(conn);
}
#endif
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