2 #define I3__FILE__ "window.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
9 * window.c: Updates window attributes (X11 hints/properties).
15 * Updates the WM_CLASS (consisting of the class and instance) for the
19 void window_update_class(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
20 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
21 DLOG("WM_CLASS not set.\n");
26 /* We cannot use asprintf here since this property contains two
27 * null-terminated strings (for compatibility reasons). Instead, we
28 * use strdup() on both strings */
29 const size_t prop_length = xcb_get_property_value_length(prop);
30 char *new_class = xcb_get_property_value(prop);
31 const size_t class_class_index = strnlen(new_class, prop_length) + 1;
33 FREE(win->class_instance);
34 FREE(win->class_class);
36 win->class_instance = sstrndup(new_class, prop_length);
37 if (class_class_index < prop_length)
38 win->class_class = sstrndup(new_class + class_class_index, prop_length - class_class_index);
40 win->class_class = NULL;
41 LOG("WM_CLASS changed to %s (instance), %s (class)\n",
42 win->class_instance, win->class_class);
55 * Updates the name by using _NET_WM_NAME (encoded in UTF-8) for the given
56 * window. Further updates using window_update_name_legacy will be ignored.
59 void window_update_name(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
60 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
61 DLOG("_NET_WM_NAME not specified, not changing\n");
66 i3string_free(win->name);
67 win->name = i3string_from_utf8_with_length(xcb_get_property_value(prop),
68 xcb_get_property_value_length(prop));
70 Con *con = con_by_window_id(win->id);
71 if (con != NULL && con->title_format != NULL) {
72 i3String *name = con_parse_title_format(con);
73 ewmh_update_visible_name(win->id, i3string_as_utf8(name));
76 win->name_x_changed = true;
77 LOG("_NET_WM_NAME changed to \"%s\"\n", i3string_as_utf8(win->name));
79 win->uses_net_wm_name = true;
92 * Updates the name by using WM_NAME (encoded in COMPOUND_TEXT). We do not
93 * touch what the client sends us but pass it to xcb_image_text_8. To get
94 * proper unicode rendering, the application has to use _NET_WM_NAME (see
95 * window_update_name()).
98 void window_update_name_legacy(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
99 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
100 DLOG("WM_NAME not set (_NET_WM_NAME is what you want anyways).\n");
105 /* ignore update when the window is known to already have a UTF-8 name */
106 if (win->uses_net_wm_name) {
111 i3string_free(win->name);
112 win->name = i3string_from_utf8_with_length(xcb_get_property_value(prop),
113 xcb_get_property_value_length(prop));
115 Con *con = con_by_window_id(win->id);
116 if (con != NULL && con->title_format != NULL) {
117 i3String *name = con_parse_title_format(con);
118 ewmh_update_visible_name(win->id, i3string_as_utf8(name));
122 LOG("WM_NAME changed to \"%s\"\n", i3string_as_utf8(win->name));
123 LOG("Using legacy window title. Note that in order to get Unicode window "
124 "titles in i3, the application has to set _NET_WM_NAME (UTF-8)\n");
126 win->name_x_changed = true;
133 run_assignments(win);
139 * Updates the CLIENT_LEADER (logical parent window).
142 void window_update_leader(i3Window *win, xcb_get_property_reply_t *prop) {
143 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
144 DLOG("CLIENT_LEADER not set on window 0x%08x.\n", win->id);
145 win->leader = XCB_NONE;
150 xcb_window_t *leader = xcb_get_property_value(prop);
151 if (leader == NULL) {
156 DLOG("Client leader changed to %08x\n", *leader);
158 win->leader = *leader;
164 * Updates the TRANSIENT_FOR (logical parent window).
167 void window_update_transient_for(i3Window *win, xcb_get_property_reply_t *prop) {
168 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
169 DLOG("TRANSIENT_FOR not set on window 0x%08x.\n", win->id);
170 win->transient_for = XCB_NONE;
175 xcb_window_t transient_for;
176 if (!xcb_icccm_get_wm_transient_for_from_reply(&transient_for, prop)) {
181 DLOG("Transient for changed to 0x%08x (window 0x%08x)\n", transient_for, win->id);
183 win->transient_for = transient_for;
189 * Updates the _NET_WM_STRUT_PARTIAL (reserved pixels at the screen edges)
192 void window_update_strut_partial(i3Window *win, xcb_get_property_reply_t *prop) {
193 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
194 DLOG("_NET_WM_STRUT_PARTIAL not set.\n");
200 if (!(strut = xcb_get_property_value(prop))) {
205 DLOG("Reserved pixels changed to: left = %d, right = %d, top = %d, bottom = %d\n",
206 strut[0], strut[1], strut[2], strut[3]);
208 win->reserved = (struct reservedpx){strut[0], strut[1], strut[2], strut[3]};
214 * Updates the WM_WINDOW_ROLE
217 void window_update_role(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
218 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
219 DLOG("WM_WINDOW_ROLE not set.\n");
225 sasprintf(&new_role, "%.*s", xcb_get_property_value_length(prop),
226 (char *)xcb_get_property_value(prop));
228 win->role = new_role;
229 LOG("WM_WINDOW_ROLE changed to \"%s\"\n", win->role);
236 run_assignments(win);
242 * Updates the _NET_WM_WINDOW_TYPE property.
245 void window_update_type(i3Window *window, xcb_get_property_reply_t *reply) {
246 xcb_atom_t new_type = xcb_get_preferred_window_type(reply);
247 if (new_type == XCB_NONE) {
248 DLOG("cannot read _NET_WM_WINDOW_TYPE from window.\n");
252 window->window_type = new_type;
253 LOG("_NET_WM_WINDOW_TYPE changed to %i.\n", window->window_type);
255 run_assignments(window);
259 * Updates the WM_HINTS (we only care about the input focus handling part).
262 void window_update_hints(i3Window *win, xcb_get_property_reply_t *prop, bool *urgency_hint) {
263 if (urgency_hint != NULL)
264 *urgency_hint = false;
266 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
267 DLOG("WM_HINTS not set.\n");
272 xcb_icccm_wm_hints_t hints;
274 if (!xcb_icccm_get_wm_hints_from_reply(&hints, prop)) {
275 DLOG("Could not get WM_HINTS\n");
280 if (hints.flags & XCB_ICCCM_WM_HINT_INPUT) {
281 win->doesnt_accept_focus = !hints.input;
282 LOG("WM_HINTS.input changed to \"%d\"\n", hints.input);
285 if (urgency_hint != NULL)
286 *urgency_hint = (xcb_icccm_wm_hints_get_urgency(&hints) != 0);
292 * Updates the MOTIF_WM_HINTS. The container's border style should be set to
293 * `motif_border_style' if border style is not BS_NORMAL.
295 * i3 only uses this hint when it specifies a window should have no
296 * title bar, or no decorations at all, which is how most window managers
299 * The EWMH spec intended to replace Motif hints with _NET_WM_WINDOW_TYPE, but
300 * it is still in use by popular widget toolkits such as GTK+ and Java AWT.
303 void window_update_motif_hints(i3Window *win, xcb_get_property_reply_t *prop, border_style_t *motif_border_style) {
304 /* This implementation simply mirrors Gnome's Metacity. Official
305 * documentation of this hint is nowhere to be found.
306 * For more information see:
307 * https://people.gnome.org/~tthurman/docs/metacity/xprops_8h-source.html
308 * http://stackoverflow.com/questions/13787553/detect-if-a-x11-window-has-decorations
310 #define MWM_HINTS_DECORATIONS (1 << 1)
311 #define MWM_DECOR_ALL (1 << 0)
312 #define MWM_DECOR_BORDER (1 << 1)
313 #define MWM_DECOR_TITLE (1 << 3)
315 if (motif_border_style != NULL)
316 *motif_border_style = BS_NORMAL;
318 if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
323 /* The property consists of an array of 5 uint64_t's. The first value is a bit
324 * mask of what properties the hint will specify. We are only interested in
325 * MWM_HINTS_DECORATIONS because it indicates that the second value of the
326 * array tells us which decorations the window should have, each flag being
327 * a particular decoration. */
328 uint64_t *motif_hints = (uint64_t *)xcb_get_property_value(prop);
330 if (motif_border_style != NULL && motif_hints[0] & MWM_HINTS_DECORATIONS) {
331 if (motif_hints[1] & MWM_DECOR_ALL || motif_hints[1] & MWM_DECOR_TITLE)
332 *motif_border_style = BS_NORMAL;
333 else if (motif_hints[1] & MWM_DECOR_BORDER)
334 *motif_border_style = BS_PIXEL;
336 *motif_border_style = BS_NONE;
341 #undef MWM_HINTS_DECORATIONS
343 #undef MWM_DECOR_BORDER
344 #undef MWM_DECOR_TITLE