diff --git a/decor/decorator.go b/decor/decorator.go
index 9e69757..dc0e9f8 100644
--- a/decor/decorator.go
+++ b/decor/decorator.go
@@ -4,7 +4,6 @@
 	"fmt"
 	"time"
 
-	"github.com/acarl005/stripansi"
 	"github.com/mattn/go-runewidth"
 )
 
@@ -66,9 +65,9 @@
 // `DecorFunc` into a `Decorator` interface by using provided
 // `func Any(DecorFunc, ...WC) Decorator`.
 type Decorator interface {
-	Configurator
 	Synchronizer
-	Decor(Statistics) string
+	Formatter
+	Decor(Statistics) (str string, viewWidth int)
 }
 
 // DecorFunc func type.
@@ -82,10 +81,12 @@
 	Sync() (chan int, bool)
 }
 
-// Configurator interface.
-type Configurator interface {
-	GetConf() WC
-	SetConf(WC)
+// Formatter interface.
+// Format method needs to be called from within Decorator.Decor method
+// in order to format string according to decor.WC settings.
+// No need to implement manually as long as decor.WC is embedded.
+type Formatter interface {
+	Format(string) (str string, viewWidth int)
 }
 
 // Wrapper interface.
@@ -135,21 +136,21 @@
 	wsync chan int
 }
 
-// FormatMsg formats final message according to WC.W and WC.C.
-// Should be called by any Decorator implementation.
-func (wc WC) FormatMsg(msg string) string {
-	pureWidth := runewidth.StringWidth(msg)
-	viewWidth := runewidth.StringWidth(stripansi.Strip(msg))
-	max := wc.W
+// Format should be called by any Decorator implementation.
+// Returns formatted string and its view (visual) width.
+func (wc WC) Format(str string) (string, int) {
+	viewWidth := runewidth.StringWidth(str)
+	if wc.W > viewWidth {
+		viewWidth = wc.W
+	}
 	if (wc.C & DSyncWidth) != 0 {
-		viewWidth := viewWidth
 		if (wc.C & DextraSpace) != 0 {
 			viewWidth++
 		}
 		wc.wsync <- viewWidth
-		max = <-wc.wsync
+		viewWidth = <-wc.wsync
 	}
-	return wc.fill(msg, max-viewWidth+pureWidth)
+	return wc.fill(str, viewWidth), viewWidth
 }
 
 // Init initializes width related config.
@@ -175,16 +176,6 @@
 	return wc.wsync, (wc.C & DSyncWidth) != 0
 }
 
-// GetConf is implementation of Configurator interface.
-func (wc *WC) GetConf() WC {
-	return *wc
-}
-
-// SetConf is implementation of Configurator interface.
-func (wc *WC) SetConf(conf WC) {
-	*wc = conf.Init()
-}
-
 func initWC(wcc ...WC) WC {
 	var wc WC
 	for _, nwc := range wcc {