[PATCH 23/36] expo: Allow highlighting other scene-object types

[Simon Glass]

So far only menus can be highlighted. With the coming addition of
text lines we need to be able to highlight other objects. Add a function
to determine whether an object can be highlighted.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 boot/scene.c   | 11 ++++-------
 include/expo.h |  8 ++++++++
 2 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/boot/scene.c b/boot/scene.c
index 8e5d3aa7dc0..4d7cabd75f4 100644
--- a/boot/scene.c
+++ b/boot/scene.c
@@ -516,7 +516,7 @@ static void send_key_obj(struct scene *scn, struct scene_obj *obj, int key,
 					       sibling)) {
 			obj = list_entry(obj->sibling.prev,
 					 struct scene_obj, sibling);
-			if (obj->type == SCENEOBJT_MENU) {
+			if (scene_obj_can_highlight(obj)) {
 				event->type = EXPOACT_POINT_OBJ;
 				event->select.id = obj->id;
 				log_debug("up to obj %d\n", event->select.id);
@@ -528,7 +528,7 @@ static void send_key_obj(struct scene *scn, struct scene_obj *obj, int key,
 		while (!list_is_last(&obj->sibling, &scn->obj_head)) {
 			obj = list_entry(obj->sibling.next, struct scene_obj,
 					 sibling);
-			if (obj->type == SCENEOBJT_MENU) {
+			if (scene_obj_can_highlight(obj)) {
 				event->type = EXPOACT_POINT_OBJ;
 				event->select.id = obj->id;
 				log_debug("down to obj %d\n", event->select.id);
@@ -537,7 +537,7 @@ static void send_key_obj(struct scene *scn, struct scene_obj *obj, int key,
 		}
 		break;
 	case BKEY_SELECT:
-		if (obj->type == SCENEOBJT_MENU) {
+		if (scene_obj_can_highlight(obj)) {
 			event->type = EXPOACT_OPEN;
 			event->select.id = obj->id;
 			log_debug("open obj %d\n", event->select.id);
@@ -685,12 +685,9 @@ void scene_highlight_first(struct scene *scn)
 	struct scene_obj *obj;
 
 	list_for_each_entry(obj, &scn->obj_head, sibling) {
-		switch (obj->type) {
-		case SCENEOBJT_MENU:
+		if (scene_obj_can_highlight(obj)) {
 			scene_set_highlight_id(scn, obj->id);
 			return;
-		default:
-			break;
 		}
 	}
 }
diff --git a/include/expo.h b/include/expo.h
index 297d892de8e..b192d55665a 100644
--- a/include/expo.h
+++ b/include/expo.h
@@ -146,6 +146,8 @@ enum scene_obj_t {
 	SCENEOBJT_NONE		= 0,
 	SCENEOBJT_IMAGE,
 	SCENEOBJT_TEXT,
+
+	/* types from here on can be highlighted */
 	SCENEOBJT_MENU,
 };
 
@@ -203,6 +205,12 @@ struct scene_obj {
 	struct list_head sibling;
 };
 
+/* object can be highlighted when moving around expo */
+static inline bool scene_obj_can_highlight(const struct scene_obj *obj)
+{
+	return obj->type >= SCENEOBJT_MENU;
+}
+
 /**
  * struct scene_obj_img - information about an image object in a scene
  *
-- 
2.42.0.459.ge4e396fd5e-goog