libstage: drop stage_lookup_key/stage_lookup_func_t

This seemed useful at the time, but it's proven a bit inadequate
when adding relative picking in addition to what the stage could
provide via the lookup hook.  Then once adding relative picking
externally, including the spatial stuff the lookup stage hook
typically added was conveniently handled as well.

So just get rid of this, even though it probably would be
perfectly sufficient for purely touch-based interfaces where
there's no relative navigation.  i.e. tab/arrow key to select
the next item.

1 files changed, 0 insertions, 31 deletions

diff --git a/src/stage.c b/src/stage.c
index 69976ae..3927120 100644
--- a/src/stage.c
+++ b/src/stage.c
@@ -373,34 +373,3 @@ stage_t * stage_lookup_name(stage_t *stage, const char *name)
 
 	return NULL;
 }
-
-
-/* lookup a stage by an opaque key using the per-stage lookup_func when present,
- * returns first hit, does not support multiple hits.
- * Intended for rudimentary non-overlapping spatial searches like picking of
- * basic 2D UI elements.
- */
-stage_t * stage_lookup_key(stage_t *stage, void *key)
-{
-	assert(stage);
-
-	if (stage->ops->lookup_func) {
-		stage_t	*hit = (stage_t *)stage->ops->lookup_func(stage, stage->object, key);
-
-		if (hit)
-			return hit;
-	}
-
-	for (int i = 0; i < STAGE_LAYERS_MAX; i++) {
-		stage_t	*s;
-
-		DLL_FOR_EACH_ENTRY(&stage->layers[i], s, stage_t, layer) {
-			stage_t	*hit = stage_lookup_key(s, key);
-
-			if (hit)
-				return hit;
-		}
-	}
-
-	return NULL;
-}