Fix setting contrast on non-touch devices (#4219)

frontend/ui/widget/buttonprogresswidget.lua

@@ -28,8 +28,6 @@ function ButtonProgressWidget:init()
         bordersize = 0,
         padding = Size.padding.small,
         dim = not self.enabled,
-        width = self.width,
-        height = self.height,
     }
 
     self.buttonprogress_content = HorizontalGroup:new{}
@@ -68,6 +66,7 @@ function ButtonProgressWidget:update()
                 self.position = i
                 self:update()
             end,
+            no_focus = true,
             hold_callback = function()
                 self.hold_callback(i)
             end,
@@ -85,4 +84,31 @@ function ButtonProgressWidget:setPosition(position)
     self:update()
 end
 
+function ButtonProgressWidget:onFocus()
+    self.buttonprogress_frame.background = Blitbuffer.COLOR_BLACK
+    return true
+end
+
+function ButtonProgressWidget:onUnfocus()
+    self.buttonprogress_frame.background = Blitbuffer.COLOR_WHITE
+    return true
+end
+
+function ButtonProgressWidget:onTapSelect(arg, gev)
+    if gev == nil then
+        self:circlePosition()
+    end
+end
+
+function ButtonProgressWidget:circlePosition()
+    if self.position then
+        self.position = self.position+1
+        if self.position > self.num_buttons then
+            self.position = 1
+        end
+        self.callback(self.position)
+        self:update()
+    end
+end
+
 return ButtonProgressWidget