482 lines
20 KiB
C
482 lines
20 KiB
C
#undef I3__FILE__
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#define I3__FILE__ "manage.c"
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/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* manage.c: Initially managing new windows (or existing ones on restart).
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*
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*/
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#include "all.h"
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#include "yajl_utils.h"
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#include <yajl/yajl_gen.h>
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/*
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* Go through all existing windows (if the window manager is restarted) and manage them
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*
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*/
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void manage_existing_windows(xcb_window_t root) {
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xcb_query_tree_reply_t *reply;
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int i, len;
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xcb_window_t *children;
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xcb_get_window_attributes_cookie_t *cookies;
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/* Get the tree of windows whose parent is the root window (= all) */
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if ((reply = xcb_query_tree_reply(conn, xcb_query_tree(conn, root), 0)) == NULL)
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return;
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len = xcb_query_tree_children_length(reply);
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cookies = smalloc(len * sizeof(*cookies));
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/* Request the window attributes for every window */
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children = xcb_query_tree_children(reply);
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for (i = 0; i < len; ++i)
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cookies[i] = xcb_get_window_attributes(conn, children[i]);
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/* Call manage_window with the attributes for every window */
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for (i = 0; i < len; ++i)
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manage_window(children[i], cookies[i], true);
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free(reply);
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free(cookies);
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}
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/*
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* Restores the geometry of each window by reparenting it to the root window
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* at the position of its frame.
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*
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* This is to be called *only* before exiting/restarting i3 because of evil
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* side-effects which are to be expected when continuing to run i3.
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*
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*/
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void restore_geometry(void) {
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DLOG("Restoring geometry\n");
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Con *con;
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TAILQ_FOREACH(con, &all_cons, all_cons)
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if (con->window) {
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DLOG("Re-adding X11 border of %d px\n", con->border_width);
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con->window_rect.width += (2 * con->border_width);
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con->window_rect.height += (2 * con->border_width);
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xcb_set_window_rect(conn, con->window->id, con->window_rect);
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DLOG("placing window %08x at %d %d\n", con->window->id, con->rect.x, con->rect.y);
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xcb_reparent_window(conn, con->window->id, root,
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con->rect.x, con->rect.y);
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}
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/* Strictly speaking, this line doesn’t really belong here, but since we
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* are syncing, let’s un-register as a window manager first */
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xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT });
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/* Make sure our changes reach the X server, we restart/exit now */
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xcb_aux_sync(conn);
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}
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/*
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* The following function sends a new window event, which consists
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* of fields "change" and "container", the latter containing a dump
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* of the window's container.
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*
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*/
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static void ipc_send_window_new_event(Con *con) {
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setlocale(LC_NUMERIC, "C");
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yajl_gen gen = ygenalloc();
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y(map_open);
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ystr("change");
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ystr("new");
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ystr("container");
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dump_node(gen, con, false);
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y(map_close);
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const unsigned char *payload;
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ylength length;
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y(get_buf, &payload, &length);
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ipc_send_event("window", I3_IPC_EVENT_WINDOW, (const char *)payload);
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y(free);
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setlocale(LC_NUMERIC, "");
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}
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/*
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* Do some sanity checks and then reparent the window.
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*
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*/
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void manage_window(xcb_window_t window, xcb_get_window_attributes_cookie_t cookie,
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bool needs_to_be_mapped) {
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xcb_drawable_t d = { window };
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xcb_get_geometry_cookie_t geomc;
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xcb_get_geometry_reply_t *geom;
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xcb_get_window_attributes_reply_t *attr = NULL;
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xcb_get_property_cookie_t wm_type_cookie, strut_cookie, state_cookie,
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utf8_title_cookie, title_cookie,
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class_cookie, leader_cookie, transient_cookie,
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role_cookie, startup_id_cookie, wm_hints_cookie;
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geomc = xcb_get_geometry(conn, d);
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#define FREE_GEOMETRY() do { \
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if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) != NULL) \
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free(geom); \
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} while (0)
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/* Check if the window is mapped (it could be not mapped when intializing and
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calling manage_window() for every window) */
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if ((attr = xcb_get_window_attributes_reply(conn, cookie, 0)) == NULL) {
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DLOG("Could not get attributes\n");
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FREE_GEOMETRY();
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return;
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}
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if (needs_to_be_mapped && attr->map_state != XCB_MAP_STATE_VIEWABLE) {
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FREE_GEOMETRY();
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goto out;
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}
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/* Don’t manage clients with the override_redirect flag */
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if (attr->override_redirect) {
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FREE_GEOMETRY();
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goto out;
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}
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/* Check if the window is already managed */
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if (con_by_window_id(window) != NULL) {
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DLOG("already managed (by con %p)\n", con_by_window_id(window));
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FREE_GEOMETRY();
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goto out;
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}
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/* Get the initial geometry (position, size, …) */
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if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL) {
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DLOG("could not get geometry\n");
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goto out;
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}
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uint32_t values[1];
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/* Set a temporary event mask for the new window, consisting only of
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* PropertyChange and StructureNotify. We need to be notified of
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* PropertyChanges because the client can change its properties *after* we
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* requested them but *before* we actually reparented it and have set our
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* final event mask.
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* We need StructureNotify because the client may unmap the window before
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* we get to re-parent it.
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* If this request fails, we assume the client has already unmapped the
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* window between the MapRequest and our event mask change. */
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values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE |
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XCB_EVENT_MASK_STRUCTURE_NOTIFY;
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xcb_void_cookie_t event_mask_cookie =
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xcb_change_window_attributes_checked(conn, window, XCB_CW_EVENT_MASK, values);
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if (xcb_request_check(conn, event_mask_cookie) != NULL) {
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LOG("Could not change event mask, the window probably already disappeared.\n");
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goto out;
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}
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#define GET_PROPERTY(atom, len) xcb_get_property(conn, false, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, len)
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wm_type_cookie = GET_PROPERTY(A__NET_WM_WINDOW_TYPE, UINT32_MAX);
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strut_cookie = GET_PROPERTY(A__NET_WM_STRUT_PARTIAL, UINT32_MAX);
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state_cookie = GET_PROPERTY(A__NET_WM_STATE, UINT32_MAX);
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utf8_title_cookie = GET_PROPERTY(A__NET_WM_NAME, 128);
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leader_cookie = GET_PROPERTY(A_WM_CLIENT_LEADER, UINT32_MAX);
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transient_cookie = GET_PROPERTY(XCB_ATOM_WM_TRANSIENT_FOR, UINT32_MAX);
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title_cookie = GET_PROPERTY(XCB_ATOM_WM_NAME, 128);
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class_cookie = GET_PROPERTY(XCB_ATOM_WM_CLASS, 128);
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role_cookie = GET_PROPERTY(A_WM_WINDOW_ROLE, 128);
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startup_id_cookie = GET_PROPERTY(A__NET_STARTUP_ID, 512);
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wm_hints_cookie = xcb_icccm_get_wm_hints(conn, window);
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/* TODO: also get wm_normal_hints here. implement after we got rid of xcb-event */
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DLOG("Managing window 0x%08x\n", window);
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i3Window *cwindow = scalloc(sizeof(i3Window));
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cwindow->id = window;
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cwindow->depth = get_visual_depth(attr->visual);
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/* We need to grab the mouse buttons for click to focus */
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xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
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XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
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1 /* left mouse button */,
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XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
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xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
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XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
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2 /* middle mouse button */,
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XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
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xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
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XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
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3 /* right mouse button */,
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XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
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/* update as much information as possible so far (some replies may be NULL) */
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window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL), true);
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window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL), true);
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window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL), true);
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window_update_leader(cwindow, xcb_get_property_reply(conn, leader_cookie, NULL));
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window_update_transient_for(cwindow, xcb_get_property_reply(conn, transient_cookie, NULL));
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window_update_strut_partial(cwindow, xcb_get_property_reply(conn, strut_cookie, NULL));
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window_update_role(cwindow, xcb_get_property_reply(conn, role_cookie, NULL), true);
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window_update_hints(cwindow, xcb_get_property_reply(conn, wm_hints_cookie, NULL));
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xcb_get_property_reply_t *startup_id_reply;
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startup_id_reply = xcb_get_property_reply(conn, startup_id_cookie, NULL);
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char *startup_ws = startup_workspace_for_window(cwindow, startup_id_reply);
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DLOG("startup workspace = %s\n", startup_ws);
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/* check if the window needs WM_TAKE_FOCUS */
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cwindow->needs_take_focus = window_supports_protocol(cwindow->id, A_WM_TAKE_FOCUS);
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/* Where to start searching for a container that swallows the new one? */
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Con *search_at = croot;
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xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
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if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DOCK)) {
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LOG("This window is of type dock\n");
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Output *output = get_output_containing(geom->x, geom->y);
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if (output != NULL) {
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DLOG("Starting search at output %s\n", output->name);
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search_at = output->con;
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}
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/* find out the desired position of this dock window */
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if (cwindow->reserved.top > 0 && cwindow->reserved.bottom == 0) {
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DLOG("Top dock client\n");
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cwindow->dock = W_DOCK_TOP;
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} else if (cwindow->reserved.top == 0 && cwindow->reserved.bottom > 0) {
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DLOG("Bottom dock client\n");
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cwindow->dock = W_DOCK_BOTTOM;
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} else {
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DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
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if (geom->y < (search_at->rect.height / 2)) {
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DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
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geom->y, (search_at->rect.height / 2));
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cwindow->dock = W_DOCK_TOP;
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} else {
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DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
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geom->y, (search_at->rect.height / 2));
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cwindow->dock = W_DOCK_BOTTOM;
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}
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}
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}
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DLOG("Initial geometry: (%d, %d, %d, %d)\n", geom->x, geom->y, geom->width, geom->height);
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Con *nc = NULL;
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Match *match = NULL;
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Assignment *assignment;
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/* TODO: two matches for one container */
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/* See if any container swallows this new window */
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nc = con_for_window(search_at, cwindow, &match);
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if (nc == NULL) {
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/* If not, check if it is assigned to a specific workspace / output */
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if ((assignment = assignment_for(cwindow, A_TO_WORKSPACE | A_TO_OUTPUT))) {
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DLOG("Assignment matches (%p)\n", match);
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if (assignment->type == A_TO_WORKSPACE) {
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nc = con_descend_tiling_focused(workspace_get(assignment->dest.workspace, NULL));
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DLOG("focused on ws %s: %p / %s\n", assignment->dest.workspace, nc, nc->name);
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if (nc->type == CT_WORKSPACE)
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nc = tree_open_con(nc, cwindow);
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else nc = tree_open_con(nc->parent, cwindow);
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}
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/* TODO: handle assignments with type == A_TO_OUTPUT */
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} else if (startup_ws) {
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/* If it’s not assigned, but was started on a specific workspace,
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* we want to open it there */
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DLOG("Using workspace on which this application was started (%s)\n", startup_ws);
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nc = con_descend_tiling_focused(workspace_get(startup_ws, NULL));
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DLOG("focused on ws %s: %p / %s\n", startup_ws, nc, nc->name);
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if (nc->type == CT_WORKSPACE)
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nc = tree_open_con(nc, cwindow);
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else nc = tree_open_con(nc->parent, cwindow);
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} else {
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/* If not, insert it at the currently focused position */
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if (focused->type == CT_CON && con_accepts_window(focused)) {
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LOG("using current container, focused = %p, focused->name = %s\n",
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focused, focused->name);
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nc = focused;
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} else nc = tree_open_con(NULL, cwindow);
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}
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} else {
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/* M_BELOW inserts the new window as a child of the one which was
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* matched (e.g. dock areas) */
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if (match != NULL && match->insert_where == M_BELOW) {
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nc = tree_open_con(nc, cwindow);
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}
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}
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DLOG("new container = %p\n", nc);
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nc->window = cwindow;
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x_reinit(nc);
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nc->border_width = geom->border_width;
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char *name;
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sasprintf(&name, "[i3 con] container around %p", cwindow);
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x_set_name(nc, name);
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free(name);
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Con *ws = con_get_workspace(nc);
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Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
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if (fs == NULL)
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fs = con_get_fullscreen_con(croot, CF_GLOBAL);
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if (fs == NULL) {
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DLOG("Not in fullscreen mode, focusing\n");
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if (!cwindow->dock) {
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/* Check that the workspace is visible and on the same output as
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* the current focused container. If the window was assigned to an
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* invisible workspace, we should not steal focus. */
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Con *current_output = con_get_output(focused);
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Con *target_output = con_get_output(ws);
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if (workspace_is_visible(ws) && current_output == target_output) {
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if (!match || !match->restart_mode) {
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con_focus(nc);
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} else DLOG("not focusing, matched with restart_mode == true\n");
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} else DLOG("workspace not visible, not focusing\n");
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} else DLOG("dock, not focusing\n");
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} else {
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DLOG("fs = %p, ws = %p, not focusing\n", fs, ws);
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/* Insert the new container in focus stack *after* the currently
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* focused (fullscreen) con. This way, the new container will be
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* focused after we return from fullscreen mode */
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Con *first = TAILQ_FIRST(&(nc->parent->focus_head));
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if (first != nc) {
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/* We only modify the focus stack if the container is not already
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* the first one. This can happen when existing containers swallow
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* new windows, for example when restarting. */
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TAILQ_REMOVE(&(nc->parent->focus_head), nc, focused);
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TAILQ_INSERT_AFTER(&(nc->parent->focus_head), first, nc, focused);
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}
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}
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/* set floating if necessary */
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bool want_floating = false;
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if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DIALOG) ||
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xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_UTILITY) ||
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xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_TOOLBAR) ||
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xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_SPLASH)) {
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LOG("This window is a dialog window, setting floating\n");
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want_floating = true;
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}
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FREE(reply);
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if (cwindow->transient_for != XCB_NONE ||
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(cwindow->leader != XCB_NONE &&
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cwindow->leader != cwindow->id &&
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con_by_window_id(cwindow->leader) != NULL)) {
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LOG("This window is transient for another window, setting floating\n");
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want_floating = true;
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if (config.popup_during_fullscreen == PDF_LEAVE_FULLSCREEN &&
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fs != NULL) {
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LOG("There is a fullscreen window, leaving fullscreen mode\n");
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con_toggle_fullscreen(fs, CF_OUTPUT);
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} else if (config.popup_during_fullscreen == PDF_SMART &&
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fs != NULL &&
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fs->window != NULL) {
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i3Window *transient_win = cwindow;
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while (transient_win != NULL &&
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transient_win->transient_for != XCB_NONE) {
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if (transient_win->transient_for == fs->window->id) {
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LOG("This floating window belongs to the fullscreen window (popup_during_fullscreen == smart)\n");
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con_focus(nc);
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break;
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}
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Con *next_transient = con_by_window_id(transient_win->transient_for);
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if (next_transient == NULL)
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break;
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transient_win = next_transient->window;
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}
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}
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}
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/* dock clients cannot be floating, that makes no sense */
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if (cwindow->dock)
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want_floating = false;
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/* Store the requested geometry. The width/height gets raised to at least
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* 75x50 when entering floating mode, which is the minimum size for a
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* window to be useful (smaller windows are usually overlays/toolbars/…
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* which are not managed by the wm anyways). We store the original geometry
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* here because it’s used for dock clients. */
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nc->geometry = (Rect){ geom->x, geom->y, geom->width, geom->height };
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if (want_floating) {
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DLOG("geometry = %d x %d\n", nc->geometry.width, nc->geometry.height);
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floating_enable(nc, true);
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}
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/* to avoid getting an UnmapNotify event due to reparenting, we temporarily
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* declare no interest in any state change event of this window */
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values[0] = XCB_NONE;
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xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
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|
||
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 geom_out;
|
||
}
|
||
|
||
values[0] = CHILD_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
|
||
xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
|
||
xcb_flush(conn);
|
||
|
||
reply = xcb_get_property_reply(conn, state_cookie, NULL);
|
||
if (xcb_reply_contains_atom(reply, A__NET_WM_STATE_FULLSCREEN))
|
||
con_toggle_fullscreen(nc, CF_OUTPUT);
|
||
|
||
FREE(reply);
|
||
|
||
/* 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);
|
||
|
||
/* Check if any assignments match */
|
||
run_assignments(cwindow);
|
||
|
||
/* 'ws' may be invalid because of the assignments, e.g. when the user uses
|
||
* "move window to workspace 1", but had it assigned to workspace 2. */
|
||
ws = con_get_workspace(nc);
|
||
|
||
/* If this window was put onto an invisible workspace (via assignments), we
|
||
* render this workspace. It wouldn’t be rendered in our normal code path
|
||
* because only the visible workspaces get rendered.
|
||
*
|
||
* By rendering the workspace, we assign proper coordinates (read: not
|
||
* width=0, height=0) to the window, which is important for windows who
|
||
* actually use them to position their GUI elements, e.g. rhythmbox. */
|
||
if (ws && !workspace_is_visible(ws)) {
|
||
/* This is a bit hackish: we need to copy the content container’s rect
|
||
* to the workspace, because calling render_con() on the content
|
||
* container would also take the shortcut and not render the invisible
|
||
* workspace at all. However, just calling render_con() on the
|
||
* workspace isn’t enough either — it needs the rect. */
|
||
ws->rect = ws->parent->rect;
|
||
render_con(ws, true);
|
||
}
|
||
tree_render();
|
||
|
||
/* Send an event about window creation */
|
||
ipc_send_window_new_event(nc);
|
||
|
||
geom_out:
|
||
free(geom);
|
||
out:
|
||
free(attr);
|
||
return;
|
||
}
|