VB.Net by API/System.Drawing/Region

Region.Complement

  
Imports System
Imports System.ruponentModel
Imports System.Windows.Forms
Imports System.Data
Imports System.Configuration
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Text
Imports System.Globalization
Imports System.Text
Imports System.Collections
Public Class MainClass
    
    Shared Sub Main()
        
        Dim myform As Form = New CombinationsForm()
        Application.Run(myform)
    End Sub
End Class
Public Class CombinationsForm
    Inherits System.Windows.Forms.Form
    Public Sub New()
        MyBase.New()
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(244, 118)
        Me.Text = "CombinationsForm"
    End Sub
    Private Sub CombinationsForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
        Dim g As Graphics = e.Graphics
        Dim width As Single = Me.ClientSize.Width 
        Dim height As Single = Me.ClientSize.Height
        Dim rect As RectangleF = New RectangleF(0, 0, width, height)
        Dim format As StringFormat = New StringFormat()
        format.Alignment = StringAlignment.Center
        format.LineAlignment = StringAlignment.Center
        Dim path1 As GraphicsPath = New GraphicsPath()
        Dim path2 As GraphicsPath = New GraphicsPath()
        Dim path1Rect As RectangleF = New RectangleF(0, 0, width * 2.0F / 3.0F, height)
        Dim path2rect As RectangleF = path1Rect
        path2rect.Offset(width * 1.0F / 3.0F, 0)
        path1.AddEllipse(path1Rect)
        path2.AddEllipse(path2rect)
        Dim region As Region = New Region(path1)
        region.ruplement(path2)
        g.FillRegion(Brushes.Red, region)
        g.DrawString("Complement", Me.Font, Brushes.Black, rect, format)
        g.DrawRectangle(Pens.Black, rect.X, rect.Y, rect.Width, rect.Height)
        g.TranslateTransform(width, 0)
    End Sub
End Class

Region.Exclude

  
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ClipRegionExclude
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim pen As New Pen(Color.Red, 5)
        Dim brush As New SolidBrush(Color.Red)
        Dim rect1 As New Rectangle(50, 0, 50, 150)
        Dim rect2 As New Rectangle(0, 50, 150, 50)
        Dim [region] As New [Region](rect1)
        [region].Exclude(rect2)
        g.FillRegion(brush, [region])
        g.Dispose()
  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

Region.GetBounds

  

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Math
public class MeasureCharacterRange
   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 txt As String = "www.vbex.ru"
        Dim the_font As New Font("Times New Roman", 50, FontStyle.Bold, GraphicsUnit.Pixel)
        Dim layout_rect As New RectangleF(0, 0, Me.ClientSize.Width, Me.ClientSize.Height)
        Dim string_format As New StringFormat
        string_format.LineAlignment = StringAlignment.Center
        string_format.Alignment = StringAlignment.Center
        e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit
        Dim character_ranges(txt.Length - 1) As CharacterRange
        For i As Integer = 0 To txt.Length - 1
            character_ranges(i) = New CharacterRange(i, 1)
        Next i
        string_format.SetMeasurableCharacterRanges(character_ranges)
        Dim character_regions() As Region = e.Graphics.MeasureCharacterRanges(txt, the_font, layout_rect, string_format)
        For Each rgn As Region In character_regions
            Dim character_bounds As RectangleF = rgn.GetBounds(e.Graphics)
            Dim character_rect As Rectangle = Rectangle.Round(character_bounds)
            e.Graphics.DrawRectangle(Pens.White, character_rect)
        Next rgn
        e.Graphics.DrawString(txt, the_font, Brushes.Black, layout_rect, string_format)
  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

Region.Intersect

  
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ClipRegionIntersect
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim pen As New Pen(Color.Red, 5)
        Dim brush As New SolidBrush(Color.Red)
        Dim rect1 As New Rectangle(50, 0, 50, 150)
        Dim rect2 As New Rectangle(0, 50, 150, 50)
        Dim [region] As New [Region](rect1)
        [region].Intersect(rect2)
        g.FillRegion(brush, [region])
        g.Dispose()
  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

Region.Union

  
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ClipRegionUnion
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim pen As New Pen(Color.Red, 5)
        Dim brush As New SolidBrush(Color.Red)
        Dim rect1 As New Rectangle(50, 0, 50, 150)
        Dim rect2 As New Rectangle(0, 50, 150, 50)
        Dim [region] As New [Region](rect1)
        [region].Union(rect2)
        g.FillRegion(brush, [region])
        g.Dispose()
  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

Region.Xor

  
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ClipRegionXor
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim pen As New Pen(Color.Red, 5)
        Dim brush As New SolidBrush(Color.Red)
        Dim rect1 As New Rectangle(50, 0, 50, 150)
        Dim rect2 As New Rectangle(0, 50, 150, 50)
        Dim [region] As New [Region](rect1)
        [region].Xor(rect2)
        g.FillRegion(brush, [region])
        g.Dispose()
  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