VB.Net Tutorial/2D Graphics/ImageAttributes
Содержание
Change Image Attributes
<source lang="vbnet">Imports System Imports System.Drawing Imports System.Collections Imports System.ruponentModel Imports System.Windows.Forms Imports System.Data Imports System.Drawing.Imaging public class ChangeImageAttributes
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class Public Class Form1
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.
Friend WithEvents SaveImgBtn As System.Windows.Forms.Button
Friend WithEvents textBox2 As System.Windows.Forms.TextBox
Friend WithEvents label3 As System.Windows.Forms.Label
Friend WithEvents textBox1 As System.Windows.Forms.TextBox
Friend WithEvents label2 As System.Windows.Forms.Label
Friend WithEvents label1 As System.Windows.Forms.Label
Friend WithEvents trackBar1 As System.Windows.Forms.TrackBar
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.SaveImgBtn = New System.Windows.Forms.Button
Me.textBox2 = New System.Windows.Forms.TextBox
Me.label3 = New System.Windows.Forms.Label
Me.textBox1 = New System.Windows.Forms.TextBox
Me.label2 = New System.Windows.Forms.Label
Me.label1 = New System.Windows.Forms.Label
Me.trackBar1 = New System.Windows.Forms.TrackBar
CType(Me.trackBar1, System.ruponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
"
"SaveImgBtn
"
Me.SaveImgBtn.Location = New System.Drawing.Point(392, 248)
Me.SaveImgBtn.Name = "SaveImgBtn"
Me.SaveImgBtn.Size = New System.Drawing.Size(120, 32)
Me.SaveImgBtn.TabIndex = 13
Me.SaveImgBtn.Text = "Save Image"
"
"textBox2
"
Me.textBox2.Location = New System.Drawing.Point(456, 200)
Me.textBox2.Name = "textBox2"
Me.textBox2.Size = New System.Drawing.Size(64, 20)
Me.textBox2.TabIndex = 12
Me.textBox2.Text = ""
"
"label3
"
Me.label3.Location = New System.Drawing.Point(360, 200)
Me.label3.Name = "label3"
Me.label3.Size = New System.Drawing.Size(88, 24)
Me.label3.TabIndex = 11
Me.label3.Text = "New Height:"
"
"textBox1
"
Me.textBox1.Location = New System.Drawing.Point(456, 168)
Me.textBox1.Name = "textBox1"
Me.textBox1.Size = New System.Drawing.Size(64, 20)
Me.textBox1.TabIndex = 10
Me.textBox1.Text = ""
"
"label2
"
Me.label2.Location = New System.Drawing.Point(360, 168)
Me.label2.Name = "label2"
Me.label2.Size = New System.Drawing.Size(88, 24)
Me.label2.TabIndex = 9
Me.label2.Text = "New Width:"
"
"label1
"
Me.label1.Location = New System.Drawing.Point(360, 48)
Me.label1.Name = "label1"
Me.label1.Size = New System.Drawing.Size(96, 24)
Me.label1.TabIndex = 8
Me.label1.Text = "Transparency"
"
"trackBar1
"
Me.trackBar1.LargeChange = 1
Me.trackBar1.Location = New System.Drawing.Point(352, 88)
Me.trackBar1.Name = "trackBar1"
Me.trackBar1.Size = New System.Drawing.Size(104, 45)
Me.trackBar1.TabIndex = 7
Me.trackBar1.Value = 1
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(520, 341)
Me.Controls.Add(Me.textBox2)
Me.Controls.Add(Me.label3)
Me.Controls.Add(Me.textBox1)
Me.Controls.Add(Me.label2)
Me.Controls.Add(Me.label1)
Me.Controls.Add(Me.trackBar1)
Me.Name = "Form1"
Me.Text = "Form1"
CType(Me.trackBar1, System.ruponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
End Sub
- End Region
Dim tpVal as Single = 10
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
Dim curImage As Image = Image.FromFile("yourfile.jpg")
e.Graphics.DrawImage(curImage, AutoScrollPosition.X, AutoScrollPosition.Y, curImage.Width, curImage.Height)
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, tpVal, 0}, New Single() {0, 0, 0, 0, 1}}
Dim clrMatrix As New ColorMatrix(ptsArray)
Dim imgAttributes As New ImageAttributes
imgAttributes.SetColorMatrix(clrMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap)
Dim smallImage As Image = Image.FromFile("yourfile.jpg")
e.Graphics.DrawImage(smallImage, New Rectangle(100, 100, 100, 100), 0, 0, smallImage.Width, smallImage.Height, GraphicsUnit.Pixel, imgAttributes)
End Sub
Private Sub trackBar1_Scroll(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles trackBar1.Scroll
tpVal = CSng(trackBar1.Value) / 10
Me.Invalidate()
End Sub
End Class</source>
Clear ImageAttributes
<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>
Draw image with ImageAttributes settings
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms Imports System.Drawing.Imaging public class RecoloringFormDemo
public Shared Sub Main
Application.Run(New RecoloringForm)
End Sub
End class Public Class RecoloringForm
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
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
- 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("yourfile.jpg")
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("yourfile.jpg")
Dim colorMap As ColorMap() = New ColorMap() {New ColorMap()}
colorMap(0).OldColor = bmp.GetPixel(0, bmp.Height - 1)
colorMap(0).NewColor = Color.Red
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.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.SetColorKey
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Imaging Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class SetColorKey
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.SetColorKey(lClr, uClr, 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)
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.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>
