VB.Net by API/System.Drawing.Drawing2D/PathGradientBrush

New PathGradientBrush

  
Imports System
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Collections
Imports System.ruponentModel
Imports System.Windows.Forms
Imports System.Data
public class PathGradientBrushCreate
   public Shared Sub Main
        Application.Run(New BrushesForm)
   End Sub
End class
Public Class BrushesForm
    Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
    Public Sub New()
        MyBase.New()
        "This call is required by the Windows Form Designer.
        InitializeComponent()
        "Add any initialization after the InitializeComponent() call
    End Sub
    "Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        "
        "BrushesForm
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Name = "BrushesForm"
        Me.Text = "Form1"
    End Sub
#End Region

    Enum LinearGradientMode
        BackwardDiagonal
        ForwardDiagonal
        Horizontal
        Vertical
    End Enum
    Private Sub BrushesForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint
        Dim g As Graphics = e.Graphics
        Dim width As Integer = Me.ClientRectangle.Width
        Dim height As Integer = Me.ClientRectangle.Height / 5
        Dim whiteBrush As Brush = System.Drawing.Brushes.White
        Dim blackBrush As Brush = System.Drawing.Brushes.Black
        Dim b As Brush
        Dim points As Point() = New Point() {New Point(0,0), New Point(width, 0), New Point(width, height), New Point(0, height)}
        b = New PathGradientBrush(points)
        g.FillRectangle(b, 0, 0, width, height)
        g.DrawString(b.ToString(), Me.Font, whiteBrush, 0, 0)
    End Sub
End Class

PathGradientBrush.CenterColor

  

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Math
public class PathGradientBrushesCenterColorSurroundColors
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
public class Form1
  Inherits System.Windows.Forms.Form
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        Dim x As Integer = 10
        Dim y As Integer = 10
        Dim wid As Integer = 100
        Dim hgt As Integer = 50
        Dim rect_pts() As Point = { _
            New Point(x, y), _
            New Point(x + wid, y), _
            New Point(x + wid, y + hgt), _
            New Point(x, y + hgt) _
        }
        Dim path_brush As New PathGradientBrush(rect_pts)
        Dim ellipse_path As New GraphicsPath
        ellipse_path.AddEllipse(x, y, wid, hgt)
        path_brush = New PathGradientBrush(ellipse_path)
        path_brush.CenterColor = Color.White
        path_brush.SurroundColors = New Color() {Color.Black}
        e.Graphics.FillEllipse(path_brush, x, y, wid, hgt)
    End Sub

  Public Sub New()
   
    MyBase.New()
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
  End Sub
End Class

PathGradientBrush.SetBlendTriangularShape

  

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Math
public class PathGradientBrushesSetBlendTriangularShape
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
public class Form1
  Inherits System.Windows.Forms.Form
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        Dim x As Integer = 10
        Dim y As Integer = 10
        Dim wid As Integer = 100
        Dim hgt As Integer = 50
        Dim rect_pts() As Point = { _
            New Point(x, y), _
            New Point(x + wid, y), _
            New Point(x + wid, y + hgt), _
            New Point(x, y + hgt) _
        }
        Dim path_brush As New PathGradientBrush(rect_pts)
        Dim ellipse_path As New GraphicsPath
        ellipse_path = New GraphicsPath
        ellipse_path.AddEllipse(x, y, wid, hgt)
        path_brush = New PathGradientBrush(ellipse_path)
        path_brush.CenterColor = Color.White
        path_brush.SurroundColors = New Color() {Color.Black}
        path_brush.SetBlendTriangularShape(0.5)
        e.Graphics.FillEllipse(path_brush, x, y, wid, hgt)
    End Sub

  Public Sub New()
   
    MyBase.New()
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
  End Sub
End Class

PathGradientBrush.SetSigmaBellShape

  
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Math
public class PathGradientBrushesSetSigmaBellShape
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
public class Form1
  Inherits System.Windows.Forms.Form
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        Dim x As Integer = 10
        Dim y As Integer = 10
        Dim wid As Integer = 100
        Dim hgt As Integer = 50
        Dim rect_pts() As Point = { _
            New Point(x, y), _
            New Point(x + wid, y), _
            New Point(x + wid, y + hgt), _
            New Point(x, y + hgt) _
        }
        Dim path_brush As New PathGradientBrush(rect_pts)
        Dim ellipse_path As New GraphicsPath
        ellipse_path = New GraphicsPath
        ellipse_path.AddEllipse(x, y, wid, hgt)
        path_brush = New PathGradientBrush(ellipse_path)
        path_brush.CenterColor = Color.White
        path_brush.SurroundColors = New Color() {Color.Black}
        path_brush.SetSigmaBellShape(0.5, 1)
        e.Graphics.FillEllipse(path_brush, x, y, wid, hgt)
    End Sub

  Public Sub New()
   
    MyBase.New()
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
  End Sub
End Class

PathGradientBrush.SurroundColors

  

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Math
public class PathGradientBrushesCenterColorSurroundColors
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
public class Form1
  Inherits System.Windows.Forms.Form
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        Dim x As Integer = 10
        Dim y As Integer = 10
        Dim wid As Integer = 100
        Dim hgt As Integer = 50
        Dim rect_pts() As Point = { _
            New Point(x, y), _
            New Point(x + wid, y), _
            New Point(x + wid, y + hgt), _
            New Point(x, y + hgt) _
        }
        Dim path_brush As New PathGradientBrush(rect_pts)
        Dim ellipse_path As New GraphicsPath
        ellipse_path.AddEllipse(x, y, wid, hgt)
        path_brush = New PathGradientBrush(ellipse_path)
        path_brush.CenterColor = Color.White
        path_brush.SurroundColors = New Color() {Color.Black}
        e.Graphics.FillEllipse(path_brush, x, y, wid, hgt)
    End Sub

  Public Sub New()
   
    MyBase.New()
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
  End Sub
End Class

PathGradientBrush.WrapMode

  
Imports System.Drawing.Text
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PathGradientBrushQuadPoints
   public Shared Sub Main
        Application.Run(New PathGradientBrushesForm)
   End Sub
End class
Public Class PathGradientBrushesForm
    Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
    Public Sub New()
        MyBase.New()
        "This call is required by the Windows Form Designer.
        InitializeComponent()
        "Add any initialization after the InitializeComponent() call
    End Sub
    "Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        components = New System.ruponentModel.Container()
        Me.Text = "PathGradientBrushesForm"
    End Sub
#End Region

    Private Sub PathGradientBrushesForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint
        Dim g As Graphics = e.Graphics
        Dim width As Integer = Me.ClientRectangle.Width / 2
        Dim height As Integer = Me.ClientRectangle.Height / 2
        Dim b As PathGradientBrush
        Dim x As Integer = 0
        Dim y As Integer = 0
        Dim quadPoints As Point() = New Point() {New Point(0, 0), New Point(width, 0), New Point(width, height), New Point(0, height)}
        b = New PathGradientBrush(quadPoints)
        b.WrapMode = WrapMode.Tile
        g.FillRectangle(b, x, y, width, height)
    End Sub
End Class