Color blending

1 files changed, 18 insertions, 0 deletions

diff --git a/drw/x.go b/drw/x.go
index 1806410..c004d78 100644
--- a/drw/x.go
+++ b/drw/x.go
@@ -77,6 +77,24 @@ func int2rgb(argb uint32) (color.RGBA) {
 		A: uint8((argb & 0xff000000) >> 24) }
 }
 
+func rgb2int(c color.Color) uint32 {
+	r, g, b, a := c.RGBA()
+
+	r /= 256
+	g /= 256
+	b /= 256
+	a /= 256
+
+	var ret uint32 = 0
+
+	ret |= (a << 24)
+	ret |= (r << 16)
+	ret |= (g << 8)
+	ret |=  b
+
+	return ret
+}
+
 type Window struct {
 	id xproto.Window
 }