Add mbox recoloring support

lv_objx/lv_mbox.c

@@ -280,6 +280,18 @@ void lv_mbox_set_style(lv_obj_t * mbox, lv_mbox_style_t type, lv_style_t * style
 
 }
 
+/**
+ * Set whether recoloring is enabled
+ * @param btnm pointer to button matrix object
+ * @param en whether recoloring is enabled
+ */
+void lv_mbox_set_recolor(lv_obj_t * mbox, bool en)
+{
+	lv_mbox_ext_t * ext = lv_obj_get_ext_attr(mbox);
+
+	if(ext->btnm)
+		lv_btnm_set_recolor(ext->btnm, en);
+}
 
 /*=====================
  * Getter functions
@@ -362,6 +374,21 @@ lv_style_t * lv_mbox_get_style(const lv_obj_t * mbox, lv_mbox_style_t type)
     return style;
 }
 
+/**
+ * Get whether recoloring is enabled
+ * @param btnm pointer to button matrix object
+ * @return whether recoloring is enabled
+ */
+bool lv_mbox_get_recolor(const lv_obj_t * mbox)
+{
+	lv_mbox_ext_t * ext = lv_obj_get_ext_attr(mbox);
+
+	if(!ext->btnm)
+		return false;
+
+	return lv_btnm_get_recolor(ext->btnm);
+}
+
 
 /**********************
  *   STATIC FUNCTIONS

lv_objx/lv_mbox.h

@@ -140,6 +140,13 @@ void lv_mbox_stop_auto_close(lv_obj_t * mbox);
  */
 void lv_mbox_set_style(lv_obj_t *mbox, lv_mbox_style_t type, lv_style_t *style);
 
+/**
+ * Set whether recoloring is enabled. Must be called after `lv_mbox_add_btns`.
+ * @param btnm pointer to button matrix object
+ * @param en whether recoloring is enabled
+ */
+void lv_mbox_set_recolor(lv_obj_t * mbox, bool en);
+
 /*=====================
  * Getter functions
  *====================*/
@@ -175,6 +182,13 @@ uint16_t lv_mbox_get_anim_time(const lv_obj_t * mbox);
  */
 lv_style_t * lv_mbox_get_style(const lv_obj_t *mbox, lv_mbox_style_t type);
 
+/**
+ * Get whether recoloring is enabled
+ * @param btnm pointer to button matrix object
+ * @return whether recoloring is enabled
+ */
+bool lv_mbox_get_recolor(const lv_obj_t * mbox);
+
 /**********************
  *      MACROS
  **********************/