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>