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Add WM_CLASS atom #187

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Add WM_CLASS atom #187

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b64dd42
Add WM_CLASS atom
tryone144 Jun 8, 2016
d7520a6
Change WM_CLASS atom to "instance", "class"
tryone144 Jun 8, 2016
49b2cc5
Changed WM_CLASS class from "bar" to "Bar"
tryone144 Oct 16, 2016
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43 changes: 41 additions & 2 deletions lemonbar.c
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Original file line number Diff line number Diff line change
Expand Up @@ -765,6 +765,7 @@ set_ewmh_atoms (void)
xcb_change_property(c, XCB_PROP_MODE_REPLACE, mon->window, atom_list[NET_WM_STRUT_PARTIAL], XCB_ATOM_CARDINAL, 32, 12, strut);
xcb_change_property(c, XCB_PROP_MODE_REPLACE, mon->window, atom_list[NET_WM_STRUT], XCB_ATOM_CARDINAL, 32, 4, strut);
xcb_change_property(c, XCB_PROP_MODE_REPLACE, mon->window, XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, 3, "bar");
xcb_change_property(c, XCB_PROP_MODE_REPLACE, mon->window, XCB_ATOM_WM_CLASS, XCB_ATOM_STRING, 8, 12, "lemonbar\0Bar");
}
}

Expand Down Expand Up @@ -1114,7 +1115,7 @@ xconn (void)
}

void
init (char *wm_name)
init (char *wm_name, char *wm_instance)
{
// Try to load a default font
if (!font_count)
Expand Down Expand Up @@ -1209,6 +1210,24 @@ init (char *wm_name)
// Set the WM_NAME atom to the user specified value
if (wm_name)
xcb_change_property(c, XCB_PROP_MODE_REPLACE, mon->window, XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8 ,strlen(wm_name), wm_name);

// set the WM_CLASS atom instance to the executable name
if (wm_instance) {
char *wm_class;
int wm_class_offset, wm_class_len;

// WM_CLASS is nullbyte seperated: wm_instance + "\0Bar\0"
wm_class_offset = strlen(wm_instance) + 1;
wm_class_len = wm_class_offset + 4;

wm_class = calloc(1, wm_class_len + 1);
strcpy(wm_class, wm_instance);
strcpy(wm_class+wm_class_offset, "Bar");

xcb_change_property(c, XCB_PROP_MODE_REPLACE, mon->window, XCB_ATOM_WM_CLASS, XCB_ATOM_STRING, 8, wm_class_len, wm_class);

free(wm_class);
}
}

xcb_flush(c);
Expand Down Expand Up @@ -1245,6 +1264,21 @@ cleanup (void)
xcb_disconnect(c);
}

char*
strip_path(char *path)
{
char *slash;

if (path == NULL || *path == '\0')
return strdup("lemonbar");

slash = strrchr(path, '/');
if (slash != NULL)
return strndup(slash + 1, 31);

return strndup(path, 31);
}

void
sighandle (int signal)
{
Expand All @@ -1267,6 +1301,7 @@ main (int argc, char **argv)
int geom_v[4] = { -1, -1, 0, 0 };
int ch, areas;
char *wm_name;
char *instance_name;

// Install the parachute!
atexit(cleanup);
Expand All @@ -1282,6 +1317,8 @@ main (int argc, char **argv)
areas = 10;
wm_name = NULL;

instance_name = strip_path(argv[0]);

// Connect to the Xserver and initialize scr
xconn();

Expand Down Expand Up @@ -1338,9 +1375,11 @@ main (int argc, char **argv)
by = geom_v[3];

// Do the heavy lifting
init(wm_name);
init(wm_name, instance_name);
// The string is strdup'd when the command line arguments are parsed
free(wm_name);
// The string is strdup'd when stripping argv[0]
free(instance_name);
// Get the fd to Xserver
pollin[1].fd = xcb_get_file_descriptor(c);

Expand Down