expo: Make calculation of an object bounding box generic

We want to support this for any object, not just menus. Move the code
around to allow this.

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

3 files changed, 87 insertions, 36 deletions

diff --git a/boot/scene.c b/boot/scene.c
index 4d7cabd75f4..e98676b9387 100644
--- a/boot/scene.c
+++ b/boot/scene.c
@@ -608,6 +608,25 @@ int scene_send_key(struct scene *scn, int key, struct expo_action *event)
 	return 0;
 }
 
+int scene_obj_calc_bbox(struct scene_obj *obj, struct vidconsole_bbox *bbox,
+			struct vidconsole_bbox *label_bbox)
+{
+	switch (obj->type) {
+	case SCENEOBJT_NONE:
+	case SCENEOBJT_IMAGE:
+	case SCENEOBJT_TEXT:
+		return -ENOSYS;
+	case SCENEOBJT_MENU: {
+		struct scene_obj_menu *menu = (struct scene_obj_menu *)obj;
+
+		scene_menu_calc_bbox(menu, bbox, label_bbox);
+		break;
+	}
+	}
+
+	return 0;
+}
+
 int scene_calc_dims(struct scene *scn, bool do_menus)
 {
 	struct scene_obj *obj;
@@ -719,3 +738,29 @@ int scene_iter_objs(struct scene *scn, expo_scene_obj_iterator iter,
 
 	return 0;
 }
+
+int scene_bbox_union(struct scene *scn, uint id, int inset,
+		     struct vidconsole_bbox *bbox)
+{
+	struct scene_obj *obj;
+
+	if (!id)
+		return 0;
+	obj = scene_obj_find(scn, id, SCENEOBJT_NONE);
+	if (!obj)
+		return log_msg_ret("obj", -ENOENT);
+	if (bbox->valid) {
+		bbox->x0 = min(bbox->x0, obj->dim.x - inset);
+		bbox->y0 = min(bbox->y0, obj->dim.y);
+		bbox->x1 = max(bbox->x1, obj->dim.x + obj->dim.w + inset);
+		bbox->y1 = max(bbox->y1, obj->dim.y + obj->dim.h);
+	} else {
+		bbox->x0 = obj->dim.x - inset;
+		bbox->y0 = obj->dim.y;
+		bbox->x1 = obj->dim.x + obj->dim.w + inset;
+		bbox->y1 = obj->dim.y + obj->dim.h;
+		bbox->valid = true;
+	}
+
+	return 0;
+}
diff --git a/boot/scene_internal.h b/boot/scene_internal.h
index 42efcee092f..326508874e6 100644
--- a/boot/scene_internal.h
+++ b/boot/scene_internal.h
@@ -9,6 +9,8 @@
 #ifndef __SCENE_INTERNAL_H
 #define __SCENE_INTERNAL_H
 
+struct vidconsole_bbox;
+
 typedef int (*expo_scene_obj_iterator)(struct scene_obj *obj, void *priv);
 
 /**
@@ -246,4 +248,41 @@ struct scene_menitem *scene_menuitem_find(const struct scene_obj_menu *menu,
 struct scene_menitem *scene_menuitem_find_seq(const struct scene_obj_menu *menu,
 					      uint seq);
 
+/**
+ * scene_bbox_union() - update bouding box with the demensions of an object
+ *
+ * Updates @bbox so that it encompasses the bounding box of object @id
+ *
+ * @snd: Scene containing object
+ * @id: Object id
+ * @inset: Amount of inset to use for width
+ * @bbox: Bounding box to update
+ * Return: 0 if OK, -ve on error
+ */
+int scene_bbox_union(struct scene *scn, uint id, int inset,
+		     struct vidconsole_bbox *bbox);
+
+/**
+ * scene_menu_calc_bbox() - Calculate bounding boxes for the menu
+ *
+ * @menu: Menu to process
+ * @bbox: Returns bounding box of menu including prompts
+ * @label_bbox: Returns bounding box of labels
+ * Return: 0 if OK, -ve on error
+ */
+void scene_menu_calc_bbox(struct scene_obj_menu *menu,
+			  struct vidconsole_bbox *bbox,
+			  struct vidconsole_bbox *label_bbox);
+
+/**
+ * scene_obj_calc_bbox() - Calculate bounding boxes for an object
+ *
+ * @obj: Object to process
+ * @bbox: Returns bounding box of object including prompts
+ * @label_bbox: Returns bounding box of labels (active area)
+ * Return: 0 if OK, -ve on error
+ */
+int scene_obj_calc_bbox(struct scene_obj *obj, struct vidconsole_bbox *bbox,
+			struct vidconsole_bbox *label_bbox);
+
 #endif /* __SCENE_INTERNAL_H */
diff --git a/boot/scene_menu.c b/boot/scene_menu.c
index e0dcd0a4e04..95c283af4b0 100644
--- a/boot/scene_menu.c
+++ b/boot/scene_menu.c
@@ -114,42 +114,9 @@ static void menu_point_to_item(struct scene_obj_menu *menu, uint item_id)
 	update_pointers(menu, item_id, true);
 }
 
-static int scene_bbox_union(struct scene *scn, uint id, int inset,
-			    struct vidconsole_bbox *bbox)
-{
-	struct scene_obj *obj;
-
-	if (!id)
-		return 0;
-	obj = scene_obj_find(scn, id, SCENEOBJT_NONE);
-	if (!obj)
-		return log_msg_ret("obj", -ENOENT);
-	if (bbox->valid) {
-		bbox->x0 = min(bbox->x0, obj->dim.x - inset);
-		bbox->y0 = min(bbox->y0, obj->dim.y);
-		bbox->x1 = max(bbox->x1, obj->dim.x + obj->dim.w + inset);
-		bbox->y1 = max(bbox->y1, obj->dim.y + obj->dim.h);
-	} else {
-		bbox->x0 = obj->dim.x - inset;
-		bbox->y0 = obj->dim.y;
-		bbox->x1 = obj->dim.x + obj->dim.w + inset;
-		bbox->y1 = obj->dim.y + obj->dim.h;
-		bbox->valid = true;
-	}
-
-	return 0;
-}
-
-/**
- * scene_menu_calc_bbox() - Calculate bounding boxes for the menu
- *
- * @menu: Menu to process
- * @bbox: Returns bounding box of menu including prompts
- * @label_bbox: Returns bounding box of labels
- */
-static void scene_menu_calc_bbox(struct scene_obj_menu *menu,
-				 struct vidconsole_bbox *bbox,
-				 struct vidconsole_bbox *label_bbox)
+void scene_menu_calc_bbox(struct scene_obj_menu *menu,
+			  struct vidconsole_bbox *bbox,
+			  struct vidconsole_bbox *label_bbox)
 {
 	const struct expo_theme *theme = &menu->obj.scene->expo->theme;
 	const struct scene_menitem *item;