* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
- * © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE)
+ * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
+ *
+ * window.c: Updates window attributes (X11 hints/properties).
*
*/
#include "all.h"
-void window_update_class(i3Window *win, xcb_get_property_reply_t *prop) {
+/*
+ * Frees an i3Window and all its members.
+ *
+ */
+void window_free(i3Window *win) {
+ FREE(win->class_class);
+ FREE(win->class_instance);
+ i3string_free(win->name);
+ FREE(win->ran_assignments);
+ FREE(win);
+}
+
+/*
+ * Updates the WM_CLASS (consisting of the class and instance) for the
+ * given window.
+ *
+ */
+void window_update_class(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
- DLOG("empty property, not updating\n");
+ DLOG("WM_CLASS not set.\n");
+ FREE(prop);
return;
}
/* We cannot use asprintf here since this property contains two
* null-terminated strings (for compatibility reasons). Instead, we
* use strdup() on both strings */
+ const size_t prop_length = xcb_get_property_value_length(prop);
char *new_class = xcb_get_property_value(prop);
+ const size_t class_class_index = strnlen(new_class, prop_length) + 1;
FREE(win->class_instance);
FREE(win->class_class);
- win->class_instance = strdup(new_class);
- if ((strlen(new_class) + 1) < xcb_get_property_value_length(prop))
- win->class_class = strdup(new_class + strlen(new_class) + 1);
- else win->class_class = NULL;
+ win->class_instance = sstrndup(new_class, prop_length);
+ if (class_class_index < prop_length)
+ win->class_class = sstrndup(new_class + class_class_index, prop_length - class_class_index);
+ else
+ win->class_class = NULL;
LOG("WM_CLASS changed to %s (instance), %s (class)\n",
win->class_instance, win->class_class);
+
+ if (before_mgmt) {
+ free(prop);
+ return;
+ }
+
+ run_assignments(win);
+
+ free(prop);
}
-void window_update_name(i3Window *win, xcb_get_property_reply_t *prop) {
+/*
+ * Updates the name by using _NET_WM_NAME (encoded in UTF-8) for the given
+ * window. Further updates using window_update_name_legacy will be ignored.
+ *
+ */
+void window_update_name(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
DLOG("_NET_WM_NAME not specified, not changing\n");
- return 1;
+ FREE(prop);
+ return;
}
- /* Save the old pointer to make the update atomic */
- int new_len;
- asprintf(&win->name_utf8, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop));
- /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
- win->name_ucs2 = convert_utf8_to_ucs2(win->name_utf8, &win->name_len);
- LOG("_NET_WM_NAME changed to \"%s\"\n", win->name_utf8);
+ i3string_free(win->name);
+
+ /* Truncate the name at the first zero byte. See #3515. */
+ const int len = xcb_get_property_value_length(prop);
+ char *name = sstrndup(xcb_get_property_value(prop), len);
+ win->name = i3string_from_utf8(name);
+ free(name);
+
+ Con *con = con_by_window_id(win->id);
+ if (con != NULL && con->title_format != NULL) {
+ i3String *name = con_parse_title_format(con);
+ ewmh_update_visible_name(win->id, i3string_as_utf8(name));
+ I3STRING_FREE(name);
+ }
+ win->name_x_changed = true;
+ LOG("_NET_WM_NAME changed to \"%s\"\n", i3string_as_utf8(win->name));
win->uses_net_wm_name = true;
+
+ if (before_mgmt) {
+ free(prop);
+ return;
+ }
+
+ run_assignments(win);
+
+ free(prop);
+}
+
+/*
+ * Updates the name by using WM_NAME (encoded in COMPOUND_TEXT). We do not
+ * touch what the client sends us but pass it to xcb_image_text_8. To get
+ * proper unicode rendering, the application has to use _NET_WM_NAME (see
+ * window_update_name()).
+ *
+ */
+void window_update_name_legacy(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
+ if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
+ DLOG("WM_NAME not set (_NET_WM_NAME is what you want anyways).\n");
+ FREE(prop);
+ return;
+ }
+
+ /* ignore update when the window is known to already have a UTF-8 name */
+ if (win->uses_net_wm_name) {
+ free(prop);
+ return;
+ }
+
+ i3string_free(win->name);
+ const int len = xcb_get_property_value_length(prop);
+ char *name = sstrndup(xcb_get_property_value(prop), len);
+ win->name = i3string_from_utf8(name);
+ free(name);
+
+ Con *con = con_by_window_id(win->id);
+ if (con != NULL && con->title_format != NULL) {
+ i3String *name = con_parse_title_format(con);
+ ewmh_update_visible_name(win->id, i3string_as_utf8(name));
+ I3STRING_FREE(name);
+ }
+
+ LOG("WM_NAME changed to \"%s\"\n", i3string_as_utf8(win->name));
+ LOG("Using legacy window title. Note that in order to get Unicode window "
+ "titles in i3, the application has to set _NET_WM_NAME (UTF-8)\n");
+
+ win->name_x_changed = true;
+
+ if (before_mgmt) {
+ free(prop);
+ return;
+ }
+
+ run_assignments(win);
+
+ free(prop);
+}
+
+/*
+ * Updates the CLIENT_LEADER (logical parent window).
+ *
+ */
+void window_update_leader(i3Window *win, xcb_get_property_reply_t *prop) {
+ if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
+ DLOG("CLIENT_LEADER not set on window 0x%08x.\n", win->id);
+ win->leader = XCB_NONE;
+ FREE(prop);
+ return;
+ }
+
+ xcb_window_t *leader = xcb_get_property_value(prop);
+ if (leader == NULL) {
+ free(prop);
+ return;
+ }
+
+ DLOG("Client leader changed to %08x\n", *leader);
+
+ win->leader = *leader;
+
+ free(prop);
+}
+
+/*
+ * Updates the TRANSIENT_FOR (logical parent window).
+ *
+ */
+void window_update_transient_for(i3Window *win, xcb_get_property_reply_t *prop) {
+ if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
+ DLOG("TRANSIENT_FOR not set on window 0x%08x.\n", win->id);
+ win->transient_for = XCB_NONE;
+ FREE(prop);
+ return;
+ }
+
+ xcb_window_t transient_for;
+ if (!xcb_icccm_get_wm_transient_for_from_reply(&transient_for, prop)) {
+ free(prop);
+ return;
+ }
+
+ DLOG("Transient for changed to 0x%08x (window 0x%08x)\n", transient_for, win->id);
+
+ win->transient_for = transient_for;
+
+ free(prop);
+}
+
+/*
+ * Updates the _NET_WM_STRUT_PARTIAL (reserved pixels at the screen edges)
+ *
+ */
+void window_update_strut_partial(i3Window *win, xcb_get_property_reply_t *prop) {
+ if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
+ DLOG("_NET_WM_STRUT_PARTIAL not set.\n");
+ FREE(prop);
+ return;
+ }
+
+ uint32_t *strut;
+ if (!(strut = xcb_get_property_value(prop))) {
+ free(prop);
+ return;
+ }
+
+ DLOG("Reserved pixels changed to: left = %d, right = %d, top = %d, bottom = %d\n",
+ strut[0], strut[1], strut[2], strut[3]);
+
+ win->reserved = (struct reservedpx){strut[0], strut[1], strut[2], strut[3]};
+
+ free(prop);
+}
+
+/*
+ * Updates the WM_WINDOW_ROLE
+ *
+ */
+void window_update_role(i3Window *win, xcb_get_property_reply_t *prop, bool before_mgmt) {
+ if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
+ DLOG("WM_WINDOW_ROLE not set.\n");
+ FREE(prop);
+ return;
+ }
+
+ char *new_role;
+ sasprintf(&new_role, "%.*s", xcb_get_property_value_length(prop),
+ (char *)xcb_get_property_value(prop));
+ FREE(win->role);
+ win->role = new_role;
+ LOG("WM_WINDOW_ROLE changed to \"%s\"\n", win->role);
+
+ if (before_mgmt) {
+ free(prop);
+ return;
+ }
+
+ run_assignments(win);
+
+ free(prop);
+}
+
+/*
+ * Updates the _NET_WM_WINDOW_TYPE property.
+ *
+ */
+void window_update_type(i3Window *window, xcb_get_property_reply_t *reply) {
+ xcb_atom_t new_type = xcb_get_preferred_window_type(reply);
+ free(reply);
+ if (new_type == XCB_NONE) {
+ DLOG("cannot read _NET_WM_WINDOW_TYPE from window.\n");
+ return;
+ }
+
+ window->window_type = new_type;
+ LOG("_NET_WM_WINDOW_TYPE changed to %i.\n", window->window_type);
+
+ run_assignments(window);
+}
+
+/*
+ * Updates the WM_HINTS (we only care about the input focus handling part).
+ *
+ */
+void window_update_hints(i3Window *win, xcb_get_property_reply_t *prop, bool *urgency_hint) {
+ if (urgency_hint != NULL)
+ *urgency_hint = false;
+
+ if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
+ DLOG("WM_HINTS not set.\n");
+ FREE(prop);
+ return;
+ }
+
+ xcb_icccm_wm_hints_t hints;
+
+ if (!xcb_icccm_get_wm_hints_from_reply(&hints, prop)) {
+ DLOG("Could not get WM_HINTS\n");
+ free(prop);
+ return;
+ }
+
+ if (hints.flags & XCB_ICCCM_WM_HINT_INPUT) {
+ win->doesnt_accept_focus = !hints.input;
+ LOG("WM_HINTS.input changed to \"%d\"\n", hints.input);
+ }
+
+ if (urgency_hint != NULL)
+ *urgency_hint = (xcb_icccm_wm_hints_get_urgency(&hints) != 0);
+
+ free(prop);
+}
+
+/*
+ * Updates the MOTIF_WM_HINTS. The container's border style should be set to
+ * `motif_border_style' if border style is not BS_NORMAL.
+ *
+ * i3 only uses this hint when it specifies a window should have no
+ * title bar, or no decorations at all, which is how most window managers
+ * handle it.
+ *
+ * The EWMH spec intended to replace Motif hints with _NET_WM_WINDOW_TYPE, but
+ * it is still in use by popular widget toolkits such as GTK+ and Java AWT.
+ *
+ */
+void window_update_motif_hints(i3Window *win, xcb_get_property_reply_t *prop, border_style_t *motif_border_style) {
+/* This implementation simply mirrors Gnome's Metacity. Official
+ * documentation of this hint is nowhere to be found.
+ * For more information see:
+ * https://people.gnome.org/~tthurman/docs/metacity/xprops_8h-source.html
+ * https://stackoverflow.com/questions/13787553/detect-if-a-x11-window-has-decorations
+ */
+#define MWM_HINTS_FLAGS_FIELD 0
+#define MWM_HINTS_DECORATIONS_FIELD 2
+
+#define MWM_HINTS_DECORATIONS (1 << 1)
+#define MWM_DECOR_ALL (1 << 0)
+#define MWM_DECOR_BORDER (1 << 1)
+#define MWM_DECOR_TITLE (1 << 3)
+
+ if (motif_border_style != NULL)
+ *motif_border_style = BS_NORMAL;
+
+ if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
+ FREE(prop);
+ return;
+ }
+
+ /* The property consists of an array of 5 uint32_t's. The first value is a
+ * bit mask of what properties the hint will specify. We are only interested
+ * in MWM_HINTS_DECORATIONS because it indicates that the third value of the
+ * array tells us which decorations the window should have, each flag being
+ * a particular decoration. Notice that X11 (Xlib) often mentions 32-bit
+ * fields which in reality are implemented using unsigned long variables
+ * (64-bits long on amd64 for example). On the other hand,
+ * xcb_get_property_value() behaves strictly according to documentation,
+ * i.e. returns 32-bit data fields. */
+ uint32_t *motif_hints = (uint32_t *)xcb_get_property_value(prop);
+
+ if (motif_border_style != NULL &&
+ motif_hints[MWM_HINTS_FLAGS_FIELD] & MWM_HINTS_DECORATIONS) {
+ if (motif_hints[MWM_HINTS_DECORATIONS_FIELD] & MWM_DECOR_ALL ||
+ motif_hints[MWM_HINTS_DECORATIONS_FIELD] & MWM_DECOR_TITLE)
+ *motif_border_style = BS_NORMAL;
+ else if (motif_hints[MWM_HINTS_DECORATIONS_FIELD] & MWM_DECOR_BORDER)
+ *motif_border_style = BS_PIXEL;
+ else
+ *motif_border_style = BS_NONE;
+ }
+
+ FREE(prop);
+
+#undef MWM_HINTS_FLAGS_FIELD
+#undef MWM_HINTS_DECORATIONS_FIELD
+#undef MWM_HINTS_DECORATIONS
+#undef MWM_DECOR_ALL
+#undef MWM_DECOR_BORDER
+#undef MWM_DECOR_TITLE
}
projects / i3 / i3 / blobdiff