Imports System.Drawing.Drawing2D
    Imports System.ComponentModel
    Imports System.Runtime.InteropServices
    MustInherit Class Theme
        Inherits ContainerControl

    #Region " Initialization "

        Protected G As Graphics
        Sub New()
            SetStyle(DirectCast(139270, ControlStyles), True)
        End Sub

        Private ParentIsForm As Boolean
        Protected Overrides Sub OnHandleCreated(ByVal e As EventArgs)
            Dock = DockStyle.Fill
            ParentIsForm = TypeOf Parent Is Form
            If ParentIsForm Then
                If Not _TransparencyKey = Color.Empty Then ParentForm.TransparencyKey = _TransparencyKey
                ParentForm.FormBorderStyle = FormBorderStyle.None
            End If
            MyBase.OnHandleCreated(e)
        End Sub

        Overrides Property Text As String
            Get
                Return MyBase.Text
            End Get
            Set(ByVal v As String)
                MyBase.Text = v
                Invalidate()
            End Set
        End Property
    #End Region

    #Region " Sizing and Movement "

        Private _Resizable As Boolean = True
        Property Resizable() As Boolean
            Get
                Return _Resizable
            End Get
            Set(ByVal value As Boolean)
                _Resizable = value
            End Set
        End Property

        Private _MoveHeight As Integer = 24
        Property MoveHeight() As Integer
            Get
                Return _MoveHeight
            End Get
            Set(ByVal v As Integer)
                _MoveHeight = v
                Header = New Rectangle(7, 7, Width - 14, _MoveHeight - 7)
            End Set
        End Property

        Private Flag As IntPtr
        Protected Overrides Sub OnMouseDown(ByVal e As MouseEventArgs)
            If Not e.Button = MouseButtons.Left Then Return
            If ParentIsForm Then If ParentForm.WindowState = FormWindowState.Maximized Then Return

            If Header.Contains(e.Location) Then
                Flag = New IntPtr(2)
            ElseIf Current.Position = 0 Or Not _Resizable Then
                Return
            Else
                Flag = New IntPtr(Current.Position)
            End If

            Capture = False
            DefWndProc(Message.Create(Parent.Handle, 161, Flag, Nothing))

            MyBase.OnMouseDown(e)
        End Sub

        Private Structure Pointer
            ReadOnly Cursor As Cursor, Position As Byte
            Sub New(ByVal c As Cursor, ByVal p As Byte)
                Cursor = c
                Position = p
            End Sub
        End Structure

        Private F1, F2, F3, F4 As Boolean, PTC As Point
        Private Function GetPointer() As Pointer
            PTC = PointToClient(MousePosition)
            F1 = PTC.X < 7
            F2 = PTC.X > Width - 7
            F3 = PTC.Y < 7
            F4 = PTC.Y > Height - 7

            If F1 And F3 Then Return New Pointer(Cursors.SizeNWSE, 13)
            If F1 And F4 Then Return New Pointer(Cursors.SizeNESW, 16)
            If F2 And F3 Then Return New Pointer(Cursors.SizeNESW, 14)
            If F2 And F4 Then Return New Pointer(Cursors.SizeNWSE, 17)
            If F1 Then Return New Pointer(Cursors.SizeWE, 10)
            If F2 Then Return New Pointer(Cursors.SizeWE, 11)
            If F3 Then Return New Pointer(Cursors.SizeNS, 12)
            If F4 Then Return New Pointer(Cursors.SizeNS, 15)
            Return New Pointer(Cursors.Default, 0)
        End Function

        Private Current, Pending As Pointer
        Private Sub SetCurrent()
            Pending = GetPointer()
            If Current.Position = Pending.Position Then Return
            Current = GetPointer()
            Cursor = Current.Cursor
        End Sub

        Protected Overrides Sub OnMouseMove(ByVal e As MouseEventArgs)
            If _Resizable Then SetCurrent()
            MyBase.OnMouseMove(e)
        End Sub

        Protected Header As Rectangle
        Protected Overrides Sub OnSizeChanged(ByVal e As EventArgs)
            If Width = 0 OrElse Height = 0 Then Return
            Header = New Rectangle(7, 7, Width - 14, _MoveHeight - 7)
            Invalidate()
            MyBase.OnSizeChanged(e)
        End Sub

    #End Region

    #Region " Convienence "

        MustOverride Sub PaintHook()
        Protected NotOverridable Overrides Sub OnPaint(ByVal e As PaintEventArgs)
            If Width = 0 OrElse Height = 0 Then Return
            G = e.Graphics
            PaintHook()
        End Sub

        Private _TransparencyKey As Color
        Property TransparencyKey() As Color
            Get
                Return _TransparencyKey
            End Get
            Set(ByVal v As Color)
                _TransparencyKey = v
                Invalidate()
            End Set
        End Property

        Private _Image As Image
        Property Image() As Image
            Get
                Return _Image
            End Get
            Set(ByVal value As Image)
                _Image = value
                Invalidate()
            End Set
        End Property
        ReadOnly Property ImageWidth() As Integer
            Get
                If _Image Is Nothing Then Return 0
                Return _Image.Width
            End Get
        End Property

        Private _Size As Size
        Private _Rectangle As Rectangle
        Private _Gradient As LinearGradientBrush
        Private _Brush As SolidBrush

        Protected Sub DrawCorners(ByVal c As Color, ByVal rect As Rectangle)
            _Brush = New SolidBrush(c)
            G.FillRectangle(_Brush, rect.X, rect.Y, 1, 1)
            G.FillRectangle(_Brush, rect.X + (rect.Width - 1), rect.Y, 1, 1)
            G.FillRectangle(_Brush, rect.X, rect.Y + (rect.Height - 1), 1, 1)
            G.FillRectangle(_Brush, rect.X + (rect.Width - 1), rect.Y + (rect.Height - 1), 1, 1)
        End Sub

        Protected Sub DrawBorders(ByVal p1 As Pen, ByVal p2 As Pen, ByVal rect As Rectangle)
            G.DrawRectangle(p1, rect.X, rect.Y, rect.Width - 1, rect.Height - 1)
            G.DrawRectangle(p2, rect.X + 1, rect.Y + 1, rect.Width - 3, rect.Height - 3)
        End Sub

        Protected Sub DrawText(ByVal a As HorizontalAlignment, ByVal c As Color, ByVal x As Integer)
            DrawText(a, c, x, 0)
        End Sub
        Protected Sub DrawText(ByVal a As HorizontalAlignment, ByVal c As Color, ByVal x As Integer, ByVal y As Integer)
            If String.IsNullOrEmpty(Text) Then Return
            _Size = G.MeasureString(Text, Font).ToSize
            _Brush = New SolidBrush(c)

            Select Case a
                Case HorizontalAlignment.Left
                    G.DrawString(Text, Font, _Brush, x, _MoveHeight \ 2 - _Size.Height \ 2 + y)
                Case HorizontalAlignment.Right
                    G.DrawString(Text, Font, _Brush, Width - _Size.Width - x, _MoveHeight \ 2 - _Size.Height \ 2 + y)
                Case HorizontalAlignment.Center
                    G.DrawString(Text, Font, _Brush, Width \ 2 - _Size.Width \ 2 + x, _MoveHeight \ 2 - _Size.Height \ 2 + y)
            End Select
        End Sub

        Protected Sub DrawIcon(ByVal a As HorizontalAlignment, ByVal x As Integer)
            DrawIcon(a, x, 0)
        End Sub
        Protected Sub DrawIcon(ByVal a As HorizontalAlignment, ByVal x As Integer, ByVal y As Integer)
            If _Image Is Nothing Then Return
            Select Case a
                Case HorizontalAlignment.Left
                    G.DrawImage(_Image, x, _MoveHeight \ 2 - _Image.Height \ 2 + y)
                Case HorizontalAlignment.Right
                    G.DrawImage(_Image, Width - _Image.Width - x, _MoveHeight \ 2 - _Image.Height \ 2 + y)
                Case HorizontalAlignment.Center
                    G.DrawImage(_Image, Width \ 2 - _Image.Width \ 2, _MoveHeight \ 2 - _Image.Height \ 2)
            End Select
        End Sub

        Protected Sub DrawGradient(ByVal c1 As Color, ByVal c2 As Color, ByVal x As Integer, ByVal y As Integer, ByVal width As Integer, ByVal height As Integer, ByVal angle As Single)
            _Rectangle = New Rectangle(x, y, width, height)
            _Gradient = New LinearGradientBrush(_Rectangle, c1, c2, angle)
            G.FillRectangle(_Gradient, _Rectangle)
        End Sub

    #End Region

    End Class
    MustInherit Class ThemeControl
        Inherits Control

    #Region " Initialization "

        Protected G As Graphics, B As Bitmap
        Sub New()
            SetStyle(DirectCast(139270, ControlStyles), True)
            B = New Bitmap(1, 1)
            G = Graphics.FromImage(B)
        End Sub

        Sub AllowTransparent()
            SetStyle(ControlStyles.Opaque, False)
            SetStyle(ControlStyles.SupportsTransparentBackColor, True)
        End Sub

        Overrides Property Text As String
            Get
                Return MyBase.Text
            End Get
            Set(ByVal v As String)
                MyBase.Text = v
                Invalidate()
            End Set
        End Property
    #End Region

    #Region " Mouse Handling "

        Protected Enum State As Byte
            MouseNone = 0
            MouseOver = 1
            MouseDown = 2
        End Enum

        Protected MouseState As State
        Protected Overrides Sub OnMouseLeave(ByVal e As EventArgs)
            ChangeMouseState(State.MouseNone)
            MyBase.OnMouseLeave(e)
        End Sub
        Protected Overrides Sub OnMouseEnter(ByVal e As EventArgs)
            ChangeMouseState(State.MouseOver)
            MyBase.OnMouseEnter(e)
        End Sub
        Protected Overrides Sub OnMouseUp(ByVal e As MouseEventArgs)
            ChangeMouseState(State.MouseOver)
            MyBase.OnMouseUp(e)
        End Sub
        Protected Overrides Sub OnMouseDown(ByVal e As MouseEventArgs)
            If e.Button = MouseButtons.Left Then ChangeMouseState(State.MouseDown)
            MyBase.OnMouseDown(e)
        End Sub

        Private Sub ChangeMouseState(ByVal e As State)
            MouseState = e
            Invalidate()
        End Sub

    #End Region

    #Region " Convienence "

        MustOverride Sub PaintHook()
        Protected NotOverridable Overrides Sub OnPaint(ByVal e As PaintEventArgs)
            If Width = 0 OrElse Height = 0 Then Return
            PaintHook()
            e.Graphics.DrawImage(B, 0, 0)
        End Sub

        Protected Overrides Sub OnSizeChanged(ByVal e As EventArgs)
            If Not Width = 0 AndAlso Not Height = 0 Then
                B = New Bitmap(Width, Height)
                G = Graphics.FromImage(B)
                Invalidate()
            End If
            MyBase.OnSizeChanged(e)
        End Sub

        Private _NoRounding As Boolean
        Property NoRounding() As Boolean
            Get
                Return _NoRounding
            End Get
            Set(ByVal v As Boolean)
                _NoRounding = v
                Invalidate()
            End Set
        End Property

        Private _Image As Image
        Property Image() As Image
            Get
                Return _Image
            End Get
            Set(ByVal value As Image)
                _Image = value
                Invalidate()
            End Set
        End Property
        ReadOnly Property ImageWidth() As Integer
            Get
                If _Image Is Nothing Then Return 0
                Return _Image.Width
            End Get
        End Property
        ReadOnly Property ImageTop() As Integer
            Get
                If _Image Is Nothing Then Return 0
                Return Height \ 2 - _Image.Height \ 2
            End Get
        End Property

        Private _Size As Size
        Private _Rectangle As Rectangle
        Private _Gradient As LinearGradientBrush
        Private _Brush As SolidBrush

        Protected Sub DrawCorners(ByVal c As Color, ByVal rect As Rectangle)
            If _NoRounding Then Return

            B.SetPixel(rect.X, rect.Y, c)
            B.SetPixel(rect.X + (rect.Width - 1), rect.Y, c)
            B.SetPixel(rect.X, rect.Y + (rect.Height - 1), c)
            B.SetPixel(rect.X + (rect.Width - 1), rect.Y + (rect.Height - 1), c)
        End Sub

        Protected Sub DrawBorders(ByVal p1 As Pen, ByVal p2 As Pen, ByVal rect As Rectangle)
            G.DrawRectangle(p1, rect.X, rect.Y, rect.Width - 1, rect.Height - 1)
            G.DrawRectangle(p2, rect.X + 1, rect.Y + 1, rect.Width - 3, rect.Height - 3)
        End Sub

        Protected Sub DrawText(ByVal a As HorizontalAlignment, ByVal c As Color, ByVal x As Integer)
            DrawText(a, c, x, 0)
        End Sub
        Protected Sub DrawText(ByVal a As HorizontalAlignment, ByVal c As Color, ByVal x As Integer, ByVal y As Integer)
            If String.IsNullOrEmpty(Text) Then Return
            _Size = G.MeasureString(Text, Font).ToSize
            _Brush = New SolidBrush(c)

            Select Case a
                Case HorizontalAlignment.Left
                    G.DrawString(Text, Font, _Brush, x, Height \ 2 - _Size.Height \ 2 + y)
                Case HorizontalAlignment.Right
                    G.DrawString(Text, Font, _Brush, Width - _Size.Width - x, Height \ 2 - _Size.Height \ 2 + y)
                Case HorizontalAlignment.Center
                    G.DrawString(Text, Font, _Brush, Width \ 2 - _Size.Width \ 2 + x, Height \ 2 - _Size.Height \ 2 + y)
            End Select
        End Sub

        Protected Sub DrawIcon(ByVal a As HorizontalAlignment, ByVal x As Integer)
            DrawIcon(a, x, 0)
        End Sub
        Protected Sub DrawIcon(ByVal a As HorizontalAlignment, ByVal x As Integer, ByVal y As Integer)
            If _Image Is Nothing Then Return
            Select Case a
                Case HorizontalAlignment.Left
                    G.DrawImage(_Image, x, Height \ 2 - _Image.Height \ 2 + y)
                Case HorizontalAlignment.Right
                    G.DrawImage(_Image, Width - _Image.Width - x, Height \ 2 - _Image.Height \ 2 + y)
                Case HorizontalAlignment.Center
                    G.DrawImage(_Image, Width \ 2 - _Image.Width \ 2, Height \ 2 - _Image.Height \ 2)
            End Select
        End Sub

        Protected Sub DrawGradient(ByVal c1 As Color, ByVal c2 As Color, ByVal x As Integer, ByVal y As Integer, ByVal width As Integer, ByVal height As Integer, ByVal angle As Single)
            _Rectangle = New Rectangle(x, y, width, height)
            _Gradient = New LinearGradientBrush(_Rectangle, c1, c2, angle)
            G.FillRectangle(_Gradient, _Rectangle)
        End Sub
    #End Region

    End Class
    MustInherit Class ThemeContainerControl
        Inherits ContainerControl

    #Region " Initialization "

        Protected G As Graphics, B As Bitmap
        Sub New()
            SetStyle(DirectCast(139270, ControlStyles), True)
            B = New Bitmap(1, 1)
            G = Graphics.FromImage(B)
        End Sub

        Sub AllowTransparent()
            SetStyle(ControlStyles.Opaque, False)
            SetStyle(ControlStyles.SupportsTransparentBackColor, True)
        End Sub

    #End Region

    #Region " Convienence "

        MustOverride Sub PaintHook()
        Protected NotOverridable Overrides Sub OnPaint(ByVal e As PaintEventArgs)
            If Width = 0 OrElse Height = 0 Then Return
            PaintHook()
            e.Graphics.DrawImage(B, 0, 0)
        End Sub

        Protected Overrides Sub OnSizeChanged(ByVal e As EventArgs)
            If Not Width = 0 AndAlso Not Height = 0 Then
                B = New Bitmap(Width, Height)
                G = Graphics.FromImage(B)
                Invalidate()
            End If
            MyBase.OnSizeChanged(e)
        End Sub

        Private _NoRounding As Boolean
        Property NoRounding() As Boolean
            Get
                Return _NoRounding
            End Get
            Set(ByVal v As Boolean)
                _NoRounding = v
                Invalidate()
            End Set
        End Property

        Private _Rectangle As Rectangle
        Private _Gradient As LinearGradientBrush

        Protected Sub DrawCorners(ByVal c As Color, ByVal rect As Rectangle)
            If _NoRounding Then Return
            B.SetPixel(rect.X, rect.Y, c)
            B.SetPixel(rect.X + (rect.Width - 1), rect.Y, c)
            B.SetPixel(rect.X, rect.Y + (rect.Height - 1), c)
            B.SetPixel(rect.X + (rect.Width - 1), rect.Y + (rect.Height - 1), c)
        End Sub

        Protected Sub DrawBorders(ByVal p1 As Pen, ByVal p2 As Pen, ByVal rect As Rectangle)
            G.DrawRectangle(p1, rect.X, rect.Y, rect.Width - 1, rect.Height - 1)
            G.DrawRectangle(p2, rect.X + 1, rect.Y + 1, rect.Width - 3, rect.Height - 3)
        End Sub

        Protected Sub DrawGradient(ByVal c1 As Color, ByVal c2 As Color, ByVal x As Integer, ByVal y As Integer, ByVal width As Integer, ByVal height As Integer, ByVal angle As Single)
            _Rectangle = New Rectangle(x, y, width, height)
            _Gradient = New LinearGradientBrush(_Rectangle, c1, c2, angle)
            G.FillRectangle(_Gradient, _Rectangle)
        End Sub
    #End Region

    End Class

    Class YTTheme
        Inherits Theme
        Sub New()
            Resizable = False
            Font = New Font("Verdana", 8.25!)
            ForeColor = Color.White
            BackColor = Color.White
            TransparencyKey = Color.Fuchsia
            MoveHeight = 20
        End Sub
        Overrides Sub PaintHook()
            G.Clear(BackColor)
            DrawGradient(Color.DarkRed, Color.Red, 0, 0, Width, 20, 90S)
            DrawGradient(Color.White, Color.LightGray, 0, 20, Width, Height - 25, 90S)
            DrawGradient(Color.DarkRed, Color.Red, 0, Height - 25, Width, Height + 25 - Height, 90S)
            DrawGradient(Color.DarkRed, Color.Red, 0, Height + 25 - Height - 5, 10, Height - 45, 180S)
            DrawGradient(Color.Red, Color.DarkRed, Width - 10, Height + 25 - Height - 5, 10, Height - 45, 180S)
            DrawCorners(Color.Fuchsia, ClientRectangle)
            DrawText(HorizontalAlignment.Center, ForeColor, ImageWidth)
            DrawBorders(Pens.DarkRed, Pens.White, ClientRectangle)
        End Sub
    End Class
    Class YTButton
        Inherits ThemeControl

        Public Overrides Sub PaintHook()
            If MouseState = State.MouseDown Then
                DrawGradient(Color.Red, Color.DarkRed, 0, 0, Width, Height, 90S)
            ElseIf MouseState = State.MouseOver Then
                DrawGradient(Color.DarkRed, Color.Red, 0, 0, Width, Height, 90S)
            Else
                DrawGradient(Color.Red, Color.DarkRed, 0, 0, Width, Height, 90S)
            End If
            DrawText(HorizontalAlignment.Center, ForeColor, 0)
            DrawBorders(Pens.Red, Pens.White, ClientRectangle)
        End Sub
    End Class

    Class YTProgressBar
        Inherits ThemeControl

        Private _Maximum As Integer = 100
        Public Property Maximum() As Integer
            Get
                Return _Maximum
            End Get
            Set(ByVal value As Integer)
                If value < 1 Then value = 1
                If value < _Value Then _Value = value
                _Maximum = value
                Invalidate()
            End Set
        End Property

        Private _Value As Integer = 50
        Public Property Value() As Integer
            Get
                Return _Value
            End Get
            Set(ByVal value As Integer)
                If value > _Maximum Then value = _Maximum
                If value < 1 Then value = 1
                _Value = value
                Invalidate()
            End Set
        End Property

        Overrides Sub PaintHook()
            G.Clear(Color.DarkRed)
            If (_Value > 0) Then
                DrawGradient(Color.Red, Color.DarkRed, 0, 0, CInt((_Value / _Maximum) * Width), Height, 90S)
            End If
            G.DrawRectangle(Pens.White, 0, 0, Width - 1, Height - 1)
            DrawBorders(Pens.DarkRed, Pens.White, ClientRectangle)
        End Sub
    End Class