VB.Net by API/System.Drawing.Imaging/ImageAttributes

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ImageAttributes.ClearColorKey

<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Imaging public class Test 

  public Shared Sub Main
       Dim ImgAttr As ImageAttributes = New ImageAttributes
       ImgAttr.ClearColorKey(ColorAdjustType.Default)
  End Sub

End class 


 </source>


ImageAttributes.SetBrushRemapTable

<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms Imports System.Drawing.Imaging public class SetRemapTable 

  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 clrMapTable(1) As ColorMap
       clrMapTable(0) = New ColorMap
       clrMapTable(0).OldColor = Color.Red
       clrMapTable(0).NewColor = Color.Green
       Dim ImgAttr As New ImageAttributes
       ImgAttr.SetBrushRemapTable(clrMapTable)
       Dim curImage As Image = Image.FromFile("yourfile.jpg")
       g.DrawImage(curImage, 0, 0)
       Dim rect As New Rectangle(0, 0, 400, 400)
       g.DrawImage(curImage, rect, 0, 0, 400, 400, GraphicsUnit.Pixel, ImgAttr)
       " Dispose
       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 


 </source>


ImageAttributes.SetColorMatrix

<source lang="vbnet">

Imports System.Drawing.Imaging Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class SetColorMatrix 

  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 rect As New Rectangle(20, 20, 200, 100)
       Dim bitmap As New Bitmap("yourfile.jpg")
       Dim ptsArray As Single()() = {New Single() {1, 0, 0, 0, 0}, New Single() {0, 1, 0, 0, 0}, New Single() {0, 0, 1, 0, 0}, New Single() {0, 0, 0, 0.5F, 0}, New Single() {0, 0, 0, 0, 1}}
       Dim clrMatrix As New ColorMatrix(ptsArray)
       clrMatrix.Matrix34 = 0.8F
       clrMatrix.Matrix11 = 0.3F
       Dim imgAttributes As New ImageAttributes
       imgAttributes.SetColorMatrix(clrMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap)
       g.FillRectangle(Brushes.Red, rect)
       rect.Y += 120
       g.FillEllipse(Brushes.Black, rect)
       g.DrawImage(bitmap, New Rectangle(0, 0, bitmap.Width, bitmap.Height), 0, 0, bitmap.Width, bitmap.Height, GraphicsUnit.Pixel, imgAttributes)
       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 


 </source>


ImageAttributes.SetGamma

<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Imaging Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class SetGamma 

  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 lClr As Color = Color.FromArgb(245, 0, 0)
       Dim uClr As Color = Color.FromArgb(255, 0, 0)
       Dim ImgAttr As New ImageAttributes
       ImgAttr.SetGamma(2.0F, ColorAdjustType.Default)
       Dim curImage As Image = Image.FromFile("yourfile.jpg")
       g.DrawImage(curImage, 0, 0)
       Dim rect As New Rectangle(0, 0, 400, 400)
       g.DrawImage(curImage, rect, 0, 0, 400, 400, GraphicsUnit.Pixel, ImgAttr)
       " Dispose
       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 


 </source>


ImageAttributes.SetRemapTable

<source lang="vbnet"> Imports System Imports System.Collections Imports System.ruponentModel Imports System.Windows.Forms Imports System.Data Imports System.Configuration Imports System.Resources Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Drawing.Imaging Public Class MainClass 

   Shared Sub Main()
       Dim myform As Form = New RecoloringForm()
       Application.Run(myform)
   End Sub

End Class Public Class RecoloringForm 

   Inherits System.Windows.Forms.Form
  1. 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
       Me.SetStyle(ControlStyles.ResizeRedraw, True)
       Me.SetStyle(ControlStyles.DoubleBuffer, True)
       Me.SetStyle(ControlStyles.AllPaintingInWmPaint, True)
   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.
   Friend WithEvents groupBox2 As System.Windows.Forms.GroupBox
   Friend WithEvents panel2 As System.Windows.Forms.Panel
   Friend WithEvents splitter1 As System.Windows.Forms.Splitter
   Friend WithEvents groupBox1 As System.Windows.Forms.GroupBox
   Friend WithEvents panel1 As System.Windows.Forms.Panel
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
       Me.groupBox2 = New System.Windows.Forms.GroupBox()
       Me.panel2 = New System.Windows.Forms.Panel()
       Me.splitter1 = New System.Windows.Forms.Splitter()
       Me.groupBox1 = New System.Windows.Forms.GroupBox()
       Me.panel1 = New System.Windows.Forms.Panel()
       Me.groupBox2.SuspendLayout()
       Me.groupBox1.SuspendLayout()
       Me.SuspendLayout()
       "
       "groupBox2
       "
       Me.groupBox2.Controls.AddRange(New System.Windows.Forms.Control() {Me.panel2})
       Me.groupBox2.Dock = System.Windows.Forms.DockStyle.Fill
       Me.groupBox2.Location = New System.Drawing.Point(187, 0)
       Me.groupBox2.Name = "groupBox2"
       Me.groupBox2.Size = New System.Drawing.Size(205, 182)
       Me.groupBox2.TabIndex = 5
       Me.groupBox2.TabStop = False
       Me.groupBox2.Text = "Mapped Colors"
       "
       "panel2
       "
       Me.panel2.BackColor = System.Drawing.Color.White
       Me.panel2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
       Me.panel2.Dock = System.Windows.Forms.DockStyle.Fill
       Me.panel2.Location = New System.Drawing.Point(3, 16)
       Me.panel2.Name = "panel2"
       Me.panel2.Size = New System.Drawing.Size(199, 163)
       Me.panel2.TabIndex = 0
       "
       "splitter1
       "
       Me.splitter1.Location = New System.Drawing.Point(184, 0)
       Me.splitter1.Name = "splitter1"
       Me.splitter1.Size = New System.Drawing.Size(3, 182)
       Me.splitter1.TabIndex = 4
       Me.splitter1.TabStop = False
       "
       "groupBox1
       "
       Me.groupBox1.Controls.AddRange(New System.Windows.Forms.Control() {Me.panel1})
       Me.groupBox1.Dock = System.Windows.Forms.DockStyle.Left
       Me.groupBox1.Name = "groupBox1"
       Me.groupBox1.Size = New System.Drawing.Size(184, 182)
       Me.groupBox1.TabIndex = 3
       Me.groupBox1.TabStop = False
       Me.groupBox1.Text = "Original Colors"
       "
       "panel1
       "
       Me.panel1.BackColor = System.Drawing.Color.White
       Me.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
       Me.panel1.Dock = System.Windows.Forms.DockStyle.Fill
       Me.panel1.Location = New System.Drawing.Point(3, 16)
       Me.panel1.Name = "panel1"
       Me.panel1.Size = New System.Drawing.Size(178, 163)
       Me.panel1.TabIndex = 0
       "
       "RecoloringForm
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(392, 182)
       Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.groupBox2, Me.splitter1, Me.groupBox1})
       Me.Name = "RecoloringForm"
       Me.Text = "RecoloringForm"
       Me.groupBox2.ResumeLayout(False)
       Me.groupBox1.ResumeLayout(False)
       Me.ResumeLayout(False)
   End Sub
  1. End Region
   Private Sub panel1_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles panel1.Paint
       Dim g As Graphics = e.Graphics
       Dim bmp As Bitmap = New Bitmap("figure2.BMP")
       Dim rect As Rectangle = New Rectangle(0, 0, bmp.Width, bmp.Height)
       rect.Offset((Me.panel1.ClientRectangle.Width - rect.Width) / 2, (Me.panel1.ClientRectangle.Height - rect.Height) / 2)
       g.DrawImage(bmp, rect)
   End Sub
   Private Sub panel2_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles panel2.Paint
       Dim g As Graphics = e.Graphics
       Dim bmp As Bitmap = New Bitmap("figure2.BMP")
       Dim colorMap As ColorMap() = New ColorMap() {New ColorMap()}
       colorMap(0).OldColor = bmp.GetPixel(0, bmp.Height - 1)
       colorMap(0).NewColor = Color.White
       Dim attr As ImageAttributes = New ImageAttributes()
       attr.SetRemapTable(colorMap)
       Dim rect As Rectangle = New Rectangle(0, 0, bmp.Width, bmp.Height)
       rect.Offset((Me.panel2.ClientRectangle.Width - rect.Width) / 2, (Me.panel2.ClientRectangle.Height - rect.Height) / 2)
       g.DrawImage(bmp, rect, 0, 0, rect.Width, rect.Height, g.PageUnit, attr)
   End Sub

End Class 


 </source>


ImageAttributes.SetThreshold

<source lang="vbnet">

Imports System.Drawing Imports System.Drawing.Imaging Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class SetThreashold 

  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 lClr As Color = Color.FromArgb(245, 0, 0)
       Dim uClr As Color = Color.FromArgb(255, 0, 0)
       Dim ImgAttr As New ImageAttributes
       ImgAttr.SetThreshold(0.7F, ColorAdjustType.Default)
       Dim curImage As Image = Image.FromFile("yourfile.jpg")
       g.DrawImage(curImage, 0, 0)
       Dim rect As New Rectangle(0, 0, 400, 400)
       g.DrawImage(curImage, rect, 0, 0, 400, 400, GraphicsUnit.Pixel, ImgAttr)
       " Dispose
       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 


 </source>


ImageAttributes.SetWrapMode

<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Imaging Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class SetWrapMode 

  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 ImgAttr As New ImageAttributes
       ImgAttr.SetWrapMode(WrapMode.Tile)
       Dim curImage As Image = Image.FromFile("yourfile.jpg")
       Dim rect As New Rectangle(0, 0, 400, 400)
       g.DrawImage(curImage, rect, 0, 0, 400, 400, GraphicsUnit.Pixel, ImgAttr)
       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 


 </source>
Источник — «http://vbex.ru/index.php?title=VB.Net_by_API/System.Drawing.Imaging/ImageAttributes&oldid=2320»