1 files changed, 14 insertions, 0 deletions
diff --git a/src/util/util.c b/src/util/util.c
index c325b4d..a7c1d8e 100644
--- a/src/util/util.c
+++ b/src/util/util.c
@@ -20,6 +20,20 @@
 
 #include "util/util.h"
 
+void util_set_alpha_color(Evas_Object *obj, int alpha)
+{
+	int r, g, b, a;
+
+	evas_object_color_get(obj, &r, &g, &b, &a);
+
+	/* evas should use premultiplied alpha */
+	r = r * alpha / 255;
+	g = g * alpha / 255;
+	b = b * alpha / 255;
+
+	evas_object_color_set(obj, r, g, b, alpha);
+}
+
 Evas_Object *util_add_box(Evas_Object *base)
 {
 	Evas_Object *box;