VB.Net/2D/LineCaps — различия между версиями
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Текущая версия на 15:41, 26 мая 2010
Custom Line Cap Construction
<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Drawing.Text Imports System.Drawing.Imaging Public Class MainClass
Shared Sub Main() Dim form1 As Form1 = new Form1 Application.Run(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. <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() " "Form1 " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(292, 273) Me.Name = "Form1" Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen Me.Text = "Form1" End Sub
- End Region
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load End Sub Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs) Dim G As Graphics = e.Graphics Dim P As Pen = New Pen(Color.Blue, 1) Dim Pts() As Point = {New Point(10, 10), _ New Point(15, 10), _ New Point(20, 15), _ New Point(20, 20), _ New Point(15, 25), _ New Point(10, 10)} Dim Path As GraphicsPath = New GraphicsPath() Path.AddLines(Pts) G.SmoothingMode = SmoothingMode.AntiAlias Dim MyCustomLineCap As CustomLineCap = New CustomLineCap(Nothing, Path) MyCustomLineCap.BaseInset = 0 MyCustomLineCap.WidthScale = 1 MyCustomLineCap.StrokeJoin = LineJoin.Miter P.CustomEndCap = MyCustomLineCap P.CustomStartCap = MyCustomLineCap G.DrawLine(P, 50, 150, 200, 150) MyCustomLineCap.Dispose() Path.Dispose() P.Dispose() End Sub
End Class
</source>
Custom Line Caps
<source lang="vbnet"> Imports System.Drawing.Drawing2D Imports System Imports System.Drawing.Text Imports System.Drawing Imports System.Windows.Forms
Public Class MainClass
Shared Sub Main() Dim form1 As Form = New Form1() Application.Run(form1) End Sub " ValidationError
End Class
Public Class Form1
Private Sub Form1_Paint(ByVal sender As Object, _ ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint " Make a GraphicsPath that draws an X. Dim pts() As Point = { _ New Point(-20, -20), _ New Point(0, 0), _ New Point(-20, 20), _ New Point(0, 0), _ New Point(20, 20), _ New Point(0, 0), _ New Point(20, -20) _ } Dim cap_path As New GraphicsPath cap_path.AddLines(pts) " Make the CustomLineCap. Dim x_cap As New CustomLineCap(Nothing, cap_path) " Draw some lines with x_cap. Dim the_pen As New Pen(Color.Black, 1) the_pen.CustomStartCap = x_cap the_pen.CustomEndCap = x_cap e.Graphics.DrawLine(the_pen, 50, 100, 200, 10)
End Sub
End Class
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Public Class Form1
Inherits System.Windows.Forms.Form "Form overrides dispose to clean up the component list. <System.Diagnostics.DebuggerNonUserCode()> _ Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean) If disposing AndAlso components IsNot Nothing Then components.Dispose() 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() Me.SuspendLayout() " "Form1 " Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!) Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font Me.ClientSize = New System.Drawing.Size(292, 273) Me.Name = "Form1" Me.Text = "TransformArrow" Me.ResumeLayout(False) End Sub
End Class
</source>
LineCap Demo
<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing.Text Imports System.Drawing Public Class MainClass
Shared Sub Main(ByVal args As String()) Dim myform As Form = New Form1() Application.Run(myform) End Sub
End Class
Public Class Form1
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint Dim x As Integer = 5 Dim y As Integer = 10 Dim the_pen As New Pen(Color.Black, 20) DrawSample(e.Graphics, x, y, Drawing2D.LineCap.AnchorMask) DrawSample(e.Graphics, x, y, Drawing2D.LineCap.ArrowAnchor) DrawSample(e.Graphics, x, y, Drawing2D.LineCap.DiamondAnchor) DrawSample(e.Graphics, x, y, Drawing2D.LineCap.Flat) DrawSample(e.Graphics, x, y, Drawing2D.LineCap.NoAnchor) DrawSample(e.Graphics, x, y, Drawing2D.LineCap.Round) DrawSample(e.Graphics, x, y, Drawing2D.LineCap.RoundAnchor) DrawSample(e.Graphics, x, y, Drawing2D.LineCap.Square) DrawSample(e.Graphics, x, y, Drawing2D.LineCap.SquareAnchor) DrawSample(e.Graphics, x, y, Drawing2D.LineCap.Triangle) End Sub Private Sub DrawSample(ByVal gr As Graphics, ByRef x As Integer, ByRef y As Integer, ByVal style As Drawing2D.LineCap) Dim the_pen As New Pen(Color.Black, 20) the_pen.EndCap = style gr.DrawString(style.ToString, Me.Font, Brushes.Black, x, y - 5) gr.DrawLine(the_pen, x + 100, y, x + 150, y) y += 50 If y > Me.ClientRectangle.Height Then x += 200 y = 80 End If End Sub
End Class
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Public Class Form1
Inherits System.Windows.Forms.Form "Form overrides dispose to clean up the component list. <System.Diagnostics.DebuggerNonUserCode()> _ Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean) If disposing AndAlso components IsNot Nothing Then components.Dispose() 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() Me.SuspendLayout() " "Form1 " Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!) Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font Me.ClientSize = New System.Drawing.Size(564, 209) Me.Name = "Form1" Me.Text = "Title" Me.ResumeLayout(False) End Sub
End Class
</source>
LineCaps Demo
<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 LineCapsForm() Application.Run(myform) End Sub
End Class Public Class LineCapsForm
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 = "LineCapsForm" End Sub
- End Region
Private Sub LineCapsForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim capNames As String() = System.Enum.GetNames(GetType(LineCap)) Array.Sort(capNames) Dim x As Integer = 0 Dim y As Integer = 0 Dim width As Integer = Me.ClientRectangle.Width / 2 Dim height As Integer = Me.ClientRectangle.Height / ((capNames.Length) / 2) Dim blackBrush As Brush = Brushes.Black Dim whitePen As Pen = Pens.White Dim capName As String For Each capName In capNames Dim pen As Pen = New Pen(Color.Black, 12) pen.EndCap = CType(System.Enum.Parse(GetType(LineCap), capName), LineCap) If pen.EndCap <> LineCap.AnchorMask Then If pen.EndCap = LineCap.Custom Then pen.CustomEndCap = New AdjustableArrowCap(3, 3, False) End If g.DrawLine(pen, x, CInt(y + height * 2 / 3), CInt(x + width * 2 / 3), CInt(y + height * 2 / 3)) g.DrawLine(whitePen, x, CInt(y + height * 2 / 3), CInt(x + width * 2 / 3), CInt(y + height * 2 / 3)) g.DrawString(capName, Me.Font, blackBrush, x, y) x = x + width If x > Me.ClientRectangle.Width - width Then y = y + height x = 0 End If End If Next End Sub
End Class
</source>