subsurface: rename wlr_subsurface_state to wlr_subsurface_parent_state

Add a comment to explain the difference.

1 files changed, 7 insertions, 2 deletions

diff --git a/include/wlr/types/wlr_surface.h b/include/wlr/types/wlr_surface.h
index a9859d7b..69188cbb 100644
--- a/include/wlr/types/wlr_surface.h
+++ b/include/wlr/types/wlr_surface.h
@@ -163,7 +163,12 @@ struct wlr_surface {
 	} previous;
 };
 
-struct wlr_subsurface_state {
+/**
+ * The sub-surface state describing the sub-surface's relationship with its
+ * parent. Contrary to other states, this one is not applied on surface commit.
+ * Instead, it's applied on parent surface commit.
+ */
+struct wlr_subsurface_parent_state {
 	int32_t x, y;
 };
 
@@ -172,7 +177,7 @@ struct wlr_subsurface {
 	struct wlr_surface *surface;
 	struct wlr_surface *parent;
 
-	struct wlr_subsurface_state current, pending;
+	struct wlr_subsurface_parent_state current, pending;
 
 	uint32_t cached_seq;
 	bool has_cache;