swaybar/nag: use xcursor theme defined by XCURSOR_THEME/SIZE

If the XCURSOR_THEME and/or XCURSOR_SIZE environment variables are
set, use the theme and size they define.

If they're not set, use the same defaults as before (system default
theme, size=24).

1 files changed, 12 insertions, 2 deletions

diff --git a/swaybar/input.c b/swaybar/input.c
index 92972146..8a83f38f 100644
--- a/swaybar/input.c
+++ b/swaybar/input.c
@@ -67,9 +67,19 @@ void update_cursor(struct swaybar_seat *seat) {
         if (pointer->cursor_theme) {
                 wl_cursor_theme_destroy(pointer->cursor_theme);
         }
+        const char *cursor_theme = getenv("XCURSOR_THEME");
+        unsigned cursor_size = 24;
+        const char *env_cursor_size = getenv("XCURSOR_SIZE");
+        if (env_cursor_size) {
+                char *end;
+                unsigned size = strtoul(env_cursor_size, &end, 10);
+                if (!*end) {
+                        cursor_size = size;
+                }
+        }
         int scale = pointer->current ? pointer->current->scale : 1;
-        pointer->cursor_theme = wl_cursor_theme_load(NULL, 24 * scale,
-                        seat->bar->shm);
+        pointer->cursor_theme = wl_cursor_theme_load(
+                cursor_theme, cursor_size * scale, seat->bar->shm);
         struct wl_cursor *cursor;
         cursor = wl_cursor_theme_get_cursor(pointer->cursor_theme, "left_ptr");
         pointer->cursor_image = cursor->images[0];