Make password mask characters look better.

osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs

@@ -0,0 +1,37 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using OpenTK;
+using OpenTK.Graphics;
+
+namespace osu.Game.Graphics.UserInterface
+{
+    public class OsuPasswordTextBox : OsuTextBox
+    {
+        protected override Drawable GetDrawableCharacter(char c) =>
+            new Container
+            {
+                Size = new Vector2(CalculatedTextSize / 2, CalculatedTextSize),
+                Children = new[]
+                {
+                    new CircularContainer
+                    {
+                        Anchor = Anchor.Centre,
+                        RelativeSizeAxes = Axes.Both,
+                        Size = new Vector2(0.8f),
+                        Children = new[]
+                        {
+                            new Box
+                            {
+                                Colour = Color4.White,
+                                RelativeSizeAxes = Axes.Both,
+                            }
+                        },
+                    }
+                }
+            };
+    }
+}

osu.Game/Graphics/UserInterface/OsuTextBox.cs

@@ -8,7 +8,6 @@ using osu.Framework.Input;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Overlays;
 using OpenTK.Graphics;
-using osu.Framework.Graphics.Sprites;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -47,13 +46,6 @@ namespace osu.Game.Graphics.UserInterface
             base.OnFocusLost(state);
         }
 
-        protected override SpriteText GetDrawableCharacter(char c) => new OsuSpriteText { Text = c.ToString() };
+        protected override Drawable GetDrawableCharacter(char c) => new OsuSpriteText { Text = c.ToString(), TextSize = CalculatedTextSize };
-    }
-
-    public class OsuPasswordTextBox : OsuTextBox
-    {
-        protected virtual char MaskCharacter => '*';
-
-        protected override Drawable AddCharacterToFlow(char c) => base.AddCharacterToFlow(MaskCharacter);
     }
 }

osu.Game/osu.Game.csproj

@@ -69,6 +69,7 @@
     <Compile Include="Graphics\Sprites\OsuSpriteText.cs" />
     <Compile Include="Graphics\UserInterface\BackButton.cs" />
     <Compile Include="Graphics\UserInterface\Nub.cs" />
+    <Compile Include="Graphics\UserInterface\OsuPasswordTextBox.cs" />
     <Compile Include="Graphics\UserInterface\OsuSliderBar.cs" />
     <Compile Include="Graphics\UserInterface\OsuTextBox.cs" />
     <Compile Include="Graphics\UserInterface\TwoLayerButton.cs" />