Export XCURSOR_SIZE and XCURSOR_THEME

These can be used by toolkits (currently Qt, libxcursor, glfw) to
choose a default cursor theme and size.

This backports this rootston commit:
https://github.com/swaywm/wlroots/pull/1294/commits/3a181ab430997aaf03a75cbe3b79b0fc56ec96c3

1 files changed, 13 insertions, 2 deletions

diff --git a/sway/server.c b/sway/server.c
index 63bfa7e1..1fd7b7fa 100644
--- a/sway/server.c
+++ b/sway/server.c
@@ -83,6 +83,17 @@ bool server_init(struct sway_server *server) {
                 &server->xdg_shell_surface);
         server->xdg_shell_surface.notify = handle_xdg_shell_surface;
 
+        // TODO: configurable cursor theme and size
+        int cursor_size = 24;
+        const char *cursor_theme = NULL;
+
+        char cursor_size_fmt[16];
+        snprintf(cursor_size_fmt, sizeof(cursor_size_fmt), "%d", cursor_size);
+        setenv("XCURSOR_SIZE", cursor_size_fmt, 1);
+        if (cursor_theme != NULL) {
+                setenv("XCURSOR_THEME", cursor_theme, 1);
+        }
+
 #ifdef HAVE_XWAYLAND
         server->xwayland.wlr_xwayland =
                 wlr_xwayland_create(server->wl_display, server->compositor, true);
@@ -93,8 +104,8 @@ bool server_init(struct sway_server *server) {
                 &server->xwayland_ready);
         server->xwayland_ready.notify = handle_xwayland_ready;
 
-        // TODO: configurable cursor theme and size
-        server->xwayland.xcursor_manager = wlr_xcursor_manager_create(NULL, 24);
+        server->xwayland.xcursor_manager =
+                wlr_xcursor_manager_create(cursor_theme, cursor_size);
         wlr_xcursor_manager_load(server->xwayland.xcursor_manager, 1);
         struct wlr_xcursor *xcursor = wlr_xcursor_manager_get_xcursor(
                 server->xwayland.xcursor_manager, "left_ptr", 1);