gri3-wm/src/window.c

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/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
*
*/
#include "all.h"
/*
* 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");
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 */
char *new_class = xcb_get_property_value(prop);
FREE(win->class_instance);
FREE(win->class_class);
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win->class_instance = sstrdup(new_class);
if ((strlen(new_class) + 1) < xcb_get_property_value_length(prop))
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win->class_class = sstrdup(new_class + strlen(new_class) + 1);
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);
}
/*
* 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");
FREE(prop);
return;
}
/* Save the old pointer to make the update atomic */
char *new_name;
if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop),
(char*)xcb_get_property_value(prop)) == -1) {
perror("asprintf()");
DLOG("Could not get window name\n");
free(prop);
return;
}
/* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */
int len;
char *ucs2_name = convert_utf8_to_ucs2(new_name, &len);
if (ucs2_name == NULL) {
LOG("Could not convert _NET_WM_NAME to UCS-2, ignoring new hint\n");
FREE(new_name);
free(prop);
return;
}
FREE(win->name_x);
FREE(win->name_json);
win->name_json = new_name;
win->name_x = ucs2_name;
win->name_len = len;
win->name_x_changed = true;
LOG("_NET_WM_NAME changed to \"%s\"\n", win->name_json);
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("prop == NULL\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;
}
char *new_name;
if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop),
(char*)xcb_get_property_value(prop)) == -1) {
perror("asprintf()");
DLOG("Could not get legacy window name\n");
free(prop);
return;
}
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");
FREE(win->name_x);
FREE(win->name_json);
win->name_x = new_name;
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win->name_json = sstrdup(new_name);
win->name_len = strlen(new_name);
win->name_x_changed = true;
if (before_mgmt) {
free(prop);
return;
}
run_assignments(win);
free(prop);
}
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/*
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* 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("prop == NULL\n");
FREE(prop);
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return;
}
xcb_window_t *leader = xcb_get_property_value(prop);
if (leader == NULL) {
free(prop);
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return;
}
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DLOG("Client leader changed to %08x\n", *leader);
win->leader = *leader;
free(prop);
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}
/*
* 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("prop == NULL\n");
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 %08x\n", transient_for);
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("prop == NULL\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);
}