Add custom implementation of TextBox.

osu.Game/Graphics/UserInterface/OsuTextBox.cs

@@ -0,0 +1,48 @@
+//Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
+//Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Input;
+using OpenTK.Graphics;
+
+namespace osu.Game.Graphics.UserInterface
+{
+    public class OsuTextBox : TextBox
+    {
+        public OsuTextBox()
+        {
+            Height = 40;
+            TextContainer.Height = 0.6f;
+            CornerRadius = 5;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour colour)
+        {
+            BorderColour = colour.Yellow;
+        }
+
+        protected override bool OnFocus(InputState state)
+        {
+            BorderThickness = 3;
+
+            return base.OnFocus(state);
+        }
+
+        protected override void OnFocusLost(InputState state)
+        {
+            BorderThickness = 0;
+
+            base.OnFocusLost(state);
+        }
+    }
+
+    public class OsuPasswordTextBox : OsuTextBox
+    {
+        protected virtual char MaskCharacter => '*';
+
+        protected override Drawable AddCharacterToFlow(char c) => base.AddCharacterToFlow(MaskCharacter);
+    }
+}

osu.Game/Overlays/Options/General/LoginOptions.cs

@@ -89,9 +89,9 @@ namespace osu.Game.Overlays.Options.General
                 Children = new Drawable[]
                 {
                     new SpriteText { Text = "Username" },
-                    username = new TextBox { Height = 20, RelativeSizeAxes = Axes.X, Text = api?.Username ?? string.Empty },
+                    username = new OsuTextBox { RelativeSizeAxes = Axes.X, Text = api?.Username ?? string.Empty },
                     new SpriteText { Text = "Password" },
-                    password = new PasswordTextBox { Height = 20, RelativeSizeAxes = Axes.X },
+                    password = new OsuPasswordTextBox { RelativeSizeAxes = Axes.X },
                     new OsuButton
                     {
                         RelativeSizeAxes = Axes.X,

osu.Game/Overlays/Options/Online/InGameChatOptions.cs

@@ -43,13 +43,11 @@ namespace osu.Game.Overlays.Options.Online
                 },
                 new SpriteText { Text = "Chat ignore list (space-seperated list)" },
                 chatIgnoreList = new TextBoxOption {
-                    Height = 20,
                     RelativeSizeAxes = Axes.X,
                     Bindable = config.GetBindable<string>(OsuConfig.IgnoreList)
                 },
                 new SpriteText { Text = "Chat highlight words (space-seperated list)" },
                 chatHighlightWords = new TextBoxOption {
-                    Height = 20,
                     RelativeSizeAxes = Axes.X,
                     Bindable = config.GetBindable<string>(OsuConfig.HighlightWords)
                 },

osu.Game/Overlays/Options/TextBoxOption.cs

@@ -2,12 +2,13 @@
 //Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using System;
-using osu.Framework.Configuration;
+using osu.Framework.Configuration;
-using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Graphics.UserInterface;
-
+using osu.Game.Graphics.UserInterface;
+
 namespace osu.Game.Overlays.Options
 {
-    public class TextBoxOption : TextBox
+    public class TextBoxOption : OsuTextBox
     {
         private Bindable<string> bindable;
 

osu.Game/osu.Game.csproj

@@ -67,6 +67,7 @@
     <Compile Include="Graphics\Backgrounds\Triangles.cs" />
     <Compile Include="Graphics\Cursor\CursorTrail.cs" />
     <Compile Include="Graphics\UserInterface\BackButton.cs" />
+    <Compile Include="Graphics\UserInterface\OsuTextBox.cs" />
     <Compile Include="Modes\Objects\HitObjectParser.cs" />
     <Compile Include="Modes\Score.cs" />
     <Compile Include="Modes\ScoreProcesssor.cs" />