Disablable, because why not?

examples/profilebtn/main.go

@@ -30,6 +30,8 @@ func main() {
 	}
 	b.SetProfileImage(i)
 	b.OutlineWidth = 5
+	b.Disable()
+	b.OutlineColor = color.RGBA{0x1a, 0x23, 0xce, 0xff}
 	b2 := profilebtn.NewProfileBtn()
 	b2.SetProfileResource(resourceProfilepicdoesnotexistJpg)
 	b2.OutlineWidth = 3

pkg/profilebtn/profilebtn.go

@@ -23,6 +23,7 @@ type ProfileBtn struct {
 	profileImage      image.Image
 	minSizeOverridden bool
 	minSizeRequested  fyne.Size
+	disabled          bool
 
 	OnTapped func() `json:"-"`
 }
@@ -54,8 +55,16 @@ func (b *ProfileBtn) Resize(s fyne.Size) {
 	b.BaseWidget.Resize(s)
 }
 
+func (b *ProfileBtn) Disable() {
+	b.disabled = true
+}
+
+func (b *ProfileBtn) Ensable() {
+	b.disabled = false
+}
+
 func (b *ProfileBtn) Disabled() bool {
-	return false
+	return b.disabled
 }
 
 func (b *ProfileBtn) Tapped(*fyne.PointEvent) {
@@ -91,6 +100,7 @@ func NewProfileBtn() *ProfileBtn {
 	w.OutlineColor = color.White
 	w.SetProfileResource(nil)
 	w.minSizeOverridden = false
+	w.disabled = false
 	return w
 }
 
@@ -142,11 +152,26 @@ func (r *profileBtnRenderer) Render(w, h int) image.Image {
 	i := image.NewRGBA(image.Rect(0, 0, w, h))
 	if r.w.profileImage != nil {
 		src := r.w.profileImage
+		// convert src to srcRGBA
+		srcb := src.Bounds()
+		srcRGBA := image.NewRGBA(image.Rect(0, 0, srcb.Dx(), srcb.Dy()))
+		draw.Draw(srcRGBA, srcRGBA.Bounds(), src, srcb.Min, draw.Src)
+
 		b := src.Bounds().Size()
 		wh := image.NewUniform(r.w.OutlineColor)
 		dst := image.NewRGBA(image.Rect(0, 0, b.X, b.Y))
 		draw.DrawMask(dst, dst.Bounds(), wh, image.ZP, &circle{image.Point{b.X / 2, b.Y / 2}, (min(b.Y, b.Y) / 2)}, image.ZP, draw.Over)
-		draw.DrawMask(dst, dst.Bounds(), src, image.ZP, &circle{image.Point{b.X / 2, b.Y / 2}, (min(b.Y, b.Y) / 2) - r.w.OutlineWidth}, image.ZP, draw.Over)
+		if r.w.Disabled() {
+			for x := 0; x < srcRGBA.Bounds().Dx(); x++ {
+				for y := 0; y < srcRGBA.Bounds().Dx(); y++ {
+					c := srcRGBA.RGBA64At(x, y)
+					avg := (c.R / 3) + (c.G / 3) + (c.B / 3)
+					c = color.RGBA64{avg, avg, avg, c.A}
+					srcRGBA.SetRGBA64(x, y, c)
+				}
+			}
+		}
+		draw.DrawMask(dst, dst.Bounds(), srcRGBA, image.ZP, &circle{image.Point{b.X / 2, b.Y / 2}, (min(b.Y, b.Y) / 2) - r.w.OutlineWidth}, image.ZP, draw.Over)
 		return dst
 	} else {
 		return i