Add cursor theme to rootston config

include/rootston/config.h

@@ -48,6 +48,7 @@ struct roots_config {
 	struct {
 		char *mapped_output;
 		struct wlr_box *mapped_box;
+		char *theme;
 	} cursor;
 
 	struct wl_list outputs;

rootston/config.c

@@ -276,6 +276,9 @@ static int config_ini_handler(void *user, const char *section, const char *name,
 		} else if (strcmp(name, "geometry") == 0) {
 			free(config->cursor.mapped_box);
 			config->cursor.mapped_box = parse_geometry(value);
+		} else if (strcmp(name, "theme") == 0) {
+			free(config->cursor.theme);
+			config->cursor.theme = strdup(value);
 		} else {
 			wlr_log(L_ERROR, "got unknown cursor config: %s", name);
 		}

rootston/desktop.c

@@ -338,10 +338,11 @@ struct roots_desktop *desktop_create(struct roots_server *server,
 	desktop->server = server;
 	desktop->config = config;
 
-	desktop->xcursor_manager = wlr_xcursor_manager_create(NULL,
+	desktop->xcursor_manager = wlr_xcursor_manager_create(config->cursor.theme,
 		ROOTS_XCURSOR_SIZE);
 	if (desktop->xcursor_manager == NULL) {
-		wlr_log(L_ERROR, "Cannot create XCursor manager");
+		wlr_log(L_ERROR, "Cannot create XCursor manager for theme %s",
+			config->cursor.theme);
 		wlr_list_free(desktop->views);
 		free(desktop);
 		return NULL;

rootston/rootston.ini.example

@@ -21,6 +21,8 @@ rotate = 90
 map-to-output = VGA-1
 # Restrict cursor movements to concrete rectangle
 geometry = 2500x800
+# Load a custom XCursor theme
+theme = default
 
 # Single device configuration. String after semicolon must match device's name.
 [device:PixArt Dell MS116 USB Optical Mouse]

types/wlr_xcursor_manager.c

@@ -46,7 +46,7 @@ int wlr_xcursor_manager_load(struct wlr_xcursor_manager *manager,
 		return 1;
 	}
 	theme->scale = scale;
-	theme->theme = wlr_xcursor_theme_load(NULL, manager->size * scale);
+	theme->theme = wlr_xcursor_theme_load(manager->name, manager->size * scale);
 	if (theme->theme == NULL) {
 		free(theme);
 		return 1;