i3
window.c
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1 #undef I3__FILE__
2 #define I3__FILE__ "window.c"
3 /*
4  * vim:ts=4:sw=4:expandtab
5  *
6  * i3 - an improved dynamic tiling window manager
7  * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
8  *
9  * window.c: Updates window attributes (X11 hints/properties).
10  *
11  */
12 #include "all.h"
13 
14 /*
15  * Updates the WM_CLASS (consisting of the class and instance) for the
16  * given window.
17  *
18  */
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");
22  FREE(prop);
23  return;
24  }
25 
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  char *new_class = xcb_get_property_value(prop);
30 
31  FREE(win->class_instance);
32  FREE(win->class_class);
33 
34  win->class_instance = sstrdup(new_class);
35  if ((strlen(new_class) + 1) < xcb_get_property_value_length(prop))
36  win->class_class = sstrdup(new_class + strlen(new_class) + 1);
37  else win->class_class = NULL;
38  LOG("WM_CLASS changed to %s (instance), %s (class)\n",
39  win->class_instance, win->class_class);
40 
41  if (before_mgmt) {
42  free(prop);
43  return;
44  }
45 
46  run_assignments(win);
47 
48  free(prop);
49 }
50 
51 /*
52  * Updates the name by using _NET_WM_NAME (encoded in UTF-8) for the given
53  * window. Further updates using window_update_name_legacy will be ignored.
54  *
55  */
56 void window_update_name(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
57  if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
58  DLOG("_NET_WM_NAME not specified, not changing\n");
59  FREE(prop);
60  return;
61  }
62 
63  i3string_free(win->name);
64  win->name = i3string_from_utf8_with_length(xcb_get_property_value(prop),
65  xcb_get_property_value_length(prop));
66  win->name_x_changed = true;
67  LOG("_NET_WM_NAME changed to \"%s\"\n", i3string_as_utf8(win->name));
68 
69  win->uses_net_wm_name = true;
70 
71  if (before_mgmt) {
72  free(prop);
73  return;
74  }
75 
76  run_assignments(win);
77 
78  free(prop);
79 }
80 
81 /*
82  * Updates the name by using WM_NAME (encoded in COMPOUND_TEXT). We do not
83  * touch what the client sends us but pass it to xcb_image_text_8. To get
84  * proper unicode rendering, the application has to use _NET_WM_NAME (see
85  * window_update_name()).
86  *
87  */
88 void window_update_name_legacy(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
89  if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
90  DLOG("WM_NAME not set (_NET_WM_NAME is what you want anyways).\n");
91  FREE(prop);
92  return;
93  }
94 
95  /* ignore update when the window is known to already have a UTF-8 name */
96  if (win->uses_net_wm_name) {
97  free(prop);
98  return;
99  }
100 
101  i3string_free(win->name);
102  win->name = i3string_from_utf8_with_length(xcb_get_property_value(prop),
103  xcb_get_property_value_length(prop));
104 
105  LOG("WM_NAME changed to \"%s\"\n", i3string_as_utf8(win->name));
106  LOG("Using legacy window title. Note that in order to get Unicode window "
107  "titles in i3, the application has to set _NET_WM_NAME (UTF-8)\n");
108 
109  win->name_x_changed = true;
110 
111  if (before_mgmt) {
112  free(prop);
113  return;
114  }
115 
116  run_assignments(win);
117 
118  free(prop);
119 }
120 
121 /*
122  * Updates the CLIENT_LEADER (logical parent window).
123  *
124  */
125 void window_update_leader(i3Window *win, xcb_get_property_reply_t *prop) {
126  if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
127  DLOG("CLIENT_LEADER not set.\n");
128  FREE(prop);
129  return;
130  }
131 
132  xcb_window_t *leader = xcb_get_property_value(prop);
133  if (leader == NULL) {
134  free(prop);
135  return;
136  }
137 
138  DLOG("Client leader changed to %08x\n", *leader);
139 
140  win->leader = *leader;
141 
142  free(prop);
143 }
144 
145 /*
146  * Updates the TRANSIENT_FOR (logical parent window).
147  *
148  */
149 void window_update_transient_for(i3Window *win, xcb_get_property_reply_t *prop) {
150  if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
151  DLOG("TRANSIENT_FOR not set.\n");
152  FREE(prop);
153  return;
154  }
155 
156  xcb_window_t transient_for;
157  if (!xcb_icccm_get_wm_transient_for_from_reply(&transient_for, prop)) {
158  free(prop);
159  return;
160  }
161 
162  DLOG("Transient for changed to %08x\n", transient_for);
163 
164  win->transient_for = transient_for;
165 
166  free(prop);
167 }
168 
169 /*
170  * Updates the _NET_WM_STRUT_PARTIAL (reserved pixels at the screen edges)
171  *
172  */
173 void window_update_strut_partial(i3Window *win, xcb_get_property_reply_t *prop) {
174  if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
175  DLOG("_NET_WM_STRUT_PARTIAL not set.\n");
176  FREE(prop);
177  return;
178  }
179 
180  uint32_t *strut;
181  if (!(strut = xcb_get_property_value(prop))) {
182  free(prop);
183  return;
184  }
185 
186  DLOG("Reserved pixels changed to: left = %d, right = %d, top = %d, bottom = %d\n",
187  strut[0], strut[1], strut[2], strut[3]);
188 
189  win->reserved = (struct reservedpx){ strut[0], strut[1], strut[2], strut[3] };
190 
191  free(prop);
192 }
193 
194 /*
195  * Updates the WM_WINDOW_ROLE
196  *
197  */
198 void window_update_role(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
199  if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
200  DLOG("WM_WINDOW_ROLE not set.\n");
201  FREE(prop);
202  return;
203  }
204 
205  char *new_role;
206  if (asprintf(&new_role, "%.*s", xcb_get_property_value_length(prop),
207  (char*)xcb_get_property_value(prop)) == -1) {
208  perror("asprintf()");
209  DLOG("Could not get WM_WINDOW_ROLE\n");
210  free(prop);
211  return;
212  }
213  FREE(win->role);
214  win->role = new_role;
215  LOG("WM_WINDOW_ROLE changed to \"%s\"\n", win->role);
216 
217  if (before_mgmt) {
218  free(prop);
219  return;
220  }
221 
222  run_assignments(win);
223 
224  free(prop);
225 }
226 
227 /*
228  * Updates the WM_HINTS (we only care about the input focus handling part).
229  *
230  */
231 void window_update_hints(i3Window *win, xcb_get_property_reply_t *prop, bool *urgency_hint) {
232  if (urgency_hint != NULL)
233  *urgency_hint = false;
234 
235  if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
236  DLOG("WM_HINTS not set.\n");
237  FREE(prop);
238  return;
239  }
240 
241  xcb_icccm_wm_hints_t hints;
242 
243  if (!xcb_icccm_get_wm_hints_from_reply(&hints, prop)) {
244  DLOG("Could not get WM_HINTS\n");
245  free(prop);
246  return;
247  }
248 
249  win->doesnt_accept_focus = !hints.input;
250  LOG("WM_HINTS.input changed to \"%d\"\n", hints.input);
251 
252  if (urgency_hint != NULL)
253  *urgency_hint = (xcb_icccm_wm_hints_get_urgency(&hints) != 0);
254 
255  free(prop);
256 }