UITypeEditor-Klasse
Stellt eine Basisklasse bereit, die zum Entwerfen von Wert-Editoren verwendet werden kann, die wiederum eine Benutzeroberfläche (UI) für das Darstellen und Bearbeiten von Objektwerten der unterstützten Datentypen bereitstellen können.
Namespace: System.Drawing.Design
Assembly: System.Drawing (in system.drawing.dll)
Syntax
'Declaration
Public Class UITypeEditor
'Usage
Dim instance As UITypeEditor
public class UITypeEditor
public ref class UITypeEditor
public class UITypeEditor
public class UITypeEditor
Hinweise
Die UITypeEditor-Klasse stellt eine Basisklasse bereit, aus der Sie ableiten und die Sie erweitern können, um einen benutzerdefinierten Typ-Editor für die Entwurfszeitumgebung zu implementieren. Benutzerdefinierte Typ-Editoren sind sinnvoll, wenn ein Wert-Editor in Form eines Textfelds nicht für die Auswahl der Werte von bestimmten Typen geeignet ist.
Folgende Schritte müssen für die Implementierung eines benutzerdefinierten Typ-Editors für die Entwurfszeitbenutzeroberfläche ausgeführt werden:
Definieren einer Klasse, die von der UITypeEditor-Klasse abgeleitet ist.
Überschreiben der EditValue-Methode für die Behandlung der Benutzeroberfläche, die Verarbeitung von Benutzereingaben und die Zuweisung von Werten.
Überschreiben der GetEditStyle-Methode, um dem Eigenschaftenfenster mitzuteilen, welchen Editor-Stil der Editor verwendet.
Mit den folgenden Schritten können Sie eine zusätzliche Unterstützung für das Zeichnen von Wertdarstellungen im Eigenschaftenfenster hinzufügen:
Überschreiben der GetPaintValueSupported-Methode, um anzugeben, dass der Editor das Anzeigen der Wertdarstellung unterstützt.
Überschreiben der PaintValue-Methode, um die Anzeige der Wertdarstellung zu implementieren.
Überschreiben der UITypeEditor-Konstruktormethode, wenn der Editor ein Initialisierungsverhalten aufweisen soll.
Hinweis
Die UITypeEditor-Klasse unterstützt keine Layouts mit Leserichtung von rechts nach links (RTL).
Weitere Informationen zum Erweitern der Entwurfszeitunterstützung finden Sie unter Erweitern der Entwurfszeitunterstützung. Weitere Informationen zum Implementieren der UITypeEditor-Klasse finden Sie unter Übersicht über Typ-Editoren für Benutzeroberflächen.
Beispiel
Im folgenden Codebeispiel wird dargestellt, dass eine UITypeEditor-Schnittstelle mit einer Ganzzahl, einer double-Eigenschaft oder einer float-Eigenschaft verknüpft werden kann, die eine EditorAttribute-Klasse verwendet, um im Entwurfsmodus im Eigenschaftenfenster eine Schnittstelle zum Auswählen von Winkeln bereitzustellen. In diesem Beispiel wird die IWindowsFormsEditorService-Schnittstelle verwendet, um im Entwurfsmodus im Eigenschaftenfenster ein Dropdownsteuerelement anzuzeigen. Kompilieren Sie den Code, und fügen Sie der Toolbox die Assembly hinzu, indem Sie in Visual Studio im Menü Extras den Befehl Toolbox anpassen auswählen. Erstellen Sie eine Instanz der AngleTestControl-Eigenschaft, und klicken Sie im Eigenschaftenfenster auf die Dropdown-Schaltfläche neben der Eigenschaft Winkel, um die Eigenschaft mit dem Editor zu konfigurieren.
Option Strict Off
Imports System
Imports System.ComponentModel
Imports System.Drawing
Imports System.Drawing.Design
Imports System.Reflection
Imports System.Windows.Forms
Imports System.Windows.Forms.Design
' This UITypeEditor can be associated with Int32, Double and Single
' properties to provide a design-mode angle selection interface.
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Public Class AngleEditor
Inherits System.Drawing.Design.UITypeEditor
Public Sub New()
End Sub
' Indicates whether the UITypeEditor provides a form-based (modal) dialog,
' drop down dialog, or no UI outside of the properties window.
Public Overloads Overrides Function GetEditStyle(ByVal context As System.ComponentModel.ITypeDescriptorContext) As System.Drawing.Design.UITypeEditorEditStyle
Return UITypeEditorEditStyle.DropDown
End Function
' Displays the UI for value selection.
Public Overloads Overrides Function EditValue(ByVal context As System.ComponentModel.ITypeDescriptorContext, ByVal provider As System.IServiceProvider, ByVal value As Object) As Object
' Return the value if the value is not of type Int32, Double and Single.
If Not value.GetType() Is GetType(Double) Or value.GetType() Is GetType(Single) Or value.GetType() Is GetType(Integer) Then
Return value
End If
' Uses the IWindowsFormsEditorService to display a
' drop-down UI in the Properties window.
Dim edSvc As IWindowsFormsEditorService = CType(provider.GetService(GetType(IWindowsFormsEditorService)), IWindowsFormsEditorService)
If Not (edSvc Is Nothing) Then
' Display an angle selection control and retrieve the value.
Dim angleControl As New AngleControl(System.Convert.ToDouble(value))
edSvc.DropDownControl(angleControl)
' Return the value in the appropraite data format.
If value Is GetType(Double) Then
Return angleControl.angle
ElseIf value Is GetType(Single) Then
Return System.Convert.ToSingle(angleControl.angle)
ElseIf value Is GetType(Integer) Then
Return System.Convert.ToInt32(angleControl.angle)
End If
End If
Return value
End Function
' Draws a representation of the property's value.
Public Overloads Overrides Sub PaintValue(ByVal e As System.Drawing.Design.PaintValueEventArgs)
Dim normalX As Integer = e.Bounds.Width / 2
Dim normalY As Integer = e.Bounds.Height / 2
' Fill background and ellipse and center point.
e.Graphics.FillRectangle(New SolidBrush(Color.DarkBlue), e.Bounds.X, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height)
e.Graphics.FillEllipse(New SolidBrush(Color.White), e.Bounds.X + 1, e.Bounds.Y + 1, e.Bounds.Width - 3, e.Bounds.Height - 3)
e.Graphics.FillEllipse(New SolidBrush(Color.SlateGray), normalX + e.Bounds.X - 1, normalY + e.Bounds.Y - 1, 3, 3)
' Draw line along the current angle.
Dim radians As Double = System.Convert.ToDouble(e.Value) * Math.PI / System.Convert.ToDouble(180)
e.Graphics.DrawLine(New Pen(New SolidBrush(Color.Red), 1), normalX + e.Bounds.X, normalY + e.Bounds.Y, e.Bounds.X + (normalX + System.Convert.ToInt32(System.Convert.ToDouble(normalX) * Math.Cos(radians))), e.Bounds.Y + (normalY + System.Convert.ToInt32(System.Convert.ToDouble(normalY) * Math.Sin(radians))))
End Sub
' Indicates whether the UITypeEditor supports painting a
' representation of a property's value.
Public Overloads Overrides Function GetPaintValueSupported(ByVal context As System.ComponentModel.ITypeDescriptorContext) As Boolean
Return True
End Function
End Class
' Provides a user interface for adjusting an angle value.
Friend Class AngleControl
Inherits System.Windows.Forms.UserControl
' Stores the angle.
Public angle As Double
' Stores the rotation offset.
Private rotation As Integer = 0
' Control state tracking variables.
Private dbx As Integer = -10
Private dby As Integer = -10
Private overButton As Integer = -1
Public Sub New(ByVal initial_angle As Double)
Me.angle = initial_angle
Me.SetStyle(ControlStyles.AllPaintingInWmPaint, True)
End Sub
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
' Set angle origin point at center of control.
Dim originX As Integer = Me.Width / 2
Dim originY As Integer = Me.Height / 2
' Fill background and ellipse and center point.
e.Graphics.FillRectangle(New SolidBrush(Color.DarkBlue), 0, 0, Me.Width, Me.Height)
e.Graphics.FillEllipse(New SolidBrush(Color.White), 1, 1, Me.Width - 3, Me.Height - 3)
e.Graphics.FillEllipse(New SolidBrush(Color.SlateGray), originX - 1, originY - 1, 3, 3)
' Draw angle markers.
Dim startangle As Integer = (270 - rotation) Mod 360
e.Graphics.DrawString(startangle.ToString(), New Font("Arial", 8), New SolidBrush(Color.DarkGray), Me.Width / 2 - 10, 10)
startangle = (startangle + 90) Mod 360
e.Graphics.DrawString(startangle.ToString(), New Font("Arial", 8), New SolidBrush(Color.DarkGray), Me.Width - 18, Me.Height / 2 - 6)
startangle = (startangle + 90) Mod 360
e.Graphics.DrawString(startangle.ToString(), New Font("Arial", 8), New SolidBrush(Color.DarkGray), Me.Width / 2 - 6, Me.Height - 18)
startangle = (startangle + 90) Mod 360
e.Graphics.DrawString(startangle.ToString(), New Font("Arial", 8), New SolidBrush(Color.DarkGray), 10, Me.Height / 2 - 6)
' Draw line along the current angle.
Dim radians As Double = ((angle + rotation + 360) Mod 360) * Math.PI / System.Convert.ToDouble(180)
e.Graphics.DrawLine(New Pen(New SolidBrush(Color.Red), 1), originX, originY, originX + System.Convert.ToInt32(System.Convert.ToDouble(originX) * Math.Cos(radians)), originY + System.Convert.ToInt32(System.Convert.ToDouble(originY) * Math.Sin(radians)))
' Output angle information.
e.Graphics.FillRectangle(New SolidBrush(Color.Gray), Me.Width - 84, 3, 82, 13)
e.Graphics.DrawString("Angle: " + angle.ToString("F4"), New Font("Arial", 8), New SolidBrush(Color.Yellow), Me.Width - 84, 2)
' Draw square at mouse position of last angle adjustment.
e.Graphics.DrawRectangle(New Pen(New SolidBrush(Color.Black), 1), dbx - 2, dby - 2, 4, 4)
' Draw rotation adjustment buttons.
If overButton = 1 Then
e.Graphics.FillRectangle(New SolidBrush(Color.Green), Me.Width - 28, Me.Height - 14, 12, 12)
e.Graphics.FillRectangle(New SolidBrush(Color.Gray), 2, Me.Height - 13, 110, 12)
e.Graphics.DrawString("Rotate 90 degrees left", New Font("Arial", 8), New SolidBrush(Color.White), 2, Me.Height - 14)
Else
e.Graphics.FillRectangle(New SolidBrush(Color.DarkGreen), Me.Width - 28, Me.Height - 14, 12, 12)
End If
If overButton = 2 Then
e.Graphics.FillRectangle(New SolidBrush(Color.Green), Me.Width - 14, Me.Height - 14, 12, 12)
e.Graphics.FillRectangle(New SolidBrush(Color.Gray), 2, Me.Height - 13, 116, 12)
e.Graphics.DrawString("Rotate 90 degrees right", New Font("Arial", 8), New SolidBrush(Color.White), 2, Me.Height - 14)
Else
e.Graphics.FillRectangle(New SolidBrush(Color.DarkGreen), Me.Width - 14, Me.Height - 14, 12, 12)
End If
e.Graphics.DrawEllipse(New Pen(New SolidBrush(Color.White), 1), Me.Width - 11, Me.Height - 11, 6, 6)
e.Graphics.DrawEllipse(New Pen(New SolidBrush(Color.White), 1), Me.Width - 25, Me.Height - 11, 6, 6)
If overButton = 1 Then
e.Graphics.FillRectangle(New SolidBrush(Color.Green), Me.Width - 25, Me.Height - 6, 4, 4)
Else
e.Graphics.FillRectangle(New SolidBrush(Color.DarkGreen), Me.Width - 25, Me.Height - 6, 4, 4)
End If
If overButton = 2 Then
e.Graphics.FillRectangle(New SolidBrush(Color.Green), Me.Width - 8, Me.Height - 6, 4, 4)
Else
e.Graphics.FillRectangle(New SolidBrush(Color.DarkGreen), Me.Width - 8, Me.Height - 6, 4, 4)
End If
e.Graphics.FillPolygon(New SolidBrush(Color.White), New Point() {New Point(Me.Width - 7, Me.Height - 8), New Point(Me.Width - 3, Me.Height - 8), New Point(Me.Width - 5, Me.Height - 4)})
e.Graphics.FillPolygon(New SolidBrush(Color.White), New Point() {New Point(Me.Width - 26, Me.Height - 8), New Point(Me.Width - 21, Me.Height - 8), New Point(Me.Width - 25, Me.Height - 4)})
End Sub
Protected Overrides Sub OnMouseDown(ByVal e As System.Windows.Forms.MouseEventArgs)
' Handle rotation adjustment button clicks.
If e.X >= Me.Width - 28 AndAlso e.X <= Me.Width - 2 AndAlso e.Y >= Me.Height - 14 AndAlso e.Y <= Me.Height - 2 Then
If e.X <= Me.Width - 16 Then
rotation -= 90
ElseIf e.X >= Me.Width - 14 Then
rotation += 90
End If
If rotation < 0 Then
rotation += 360
End If
rotation = rotation Mod 360
dbx = -10
dby = -10
Else
UpdateAngle(e.X, e.Y)
End If
Me.Refresh()
End Sub
Protected Overrides Sub OnMouseMove(ByVal e As System.Windows.Forms.MouseEventArgs)
If e.Button = System.Windows.Forms.MouseButtons.Left Then
UpdateAngle(e.X, e.Y)
overButton = -1
ElseIf e.X >= Me.Width - 28 AndAlso e.X <= Me.Width - 16 AndAlso e.Y >= Me.Height - 14 AndAlso e.Y <= Me.Height - 2 Then
overButton = 1
ElseIf e.X >= Me.Width - 14 AndAlso e.X <= Me.Width - 2 AndAlso e.Y >= Me.Height - 14 AndAlso e.Y <= Me.Height - 2 Then
overButton = 2
Else
overButton = -1
End If
Me.Refresh()
End Sub
Private Sub UpdateAngle(ByVal mx As Integer, ByVal my As Integer)
' Store mouse coordinates.
dbx = mx
dby = my
' Translate y coordinate input to GetAngle function to correct for ellipsoid distortion.
Dim widthToHeightRatio As Double = System.Convert.ToDouble(Me.Width) / System.Convert.ToDouble(Me.Height)
Dim tmy As Integer
If my = 0 Then
tmy = my
ElseIf my < Me.Height / 2 Then
tmy = Me.Height / 2 - Fix((Me.Height / 2 - my) * widthToHeightRatio)
Else
tmy = Me.Height / 2 + Fix(System.Convert.ToDouble(my - Me.Height / 2) * widthToHeightRatio)
End If
' Retrieve updated angle based on rise over run.
angle = (GetAngle(Me.Width / 2, Me.Height / 2, mx, tmy) - rotation) Mod 360
End Sub
Private Function GetAngle(ByVal x1 As Integer, ByVal y1 As Integer, ByVal x2 As Integer, ByVal y2 As Integer) As Double
Dim degrees As Double
' Avoid divide by zero run values.
If x2 - x1 = 0 Then
If y2 > y1 Then
degrees = 90
Else
degrees = 270
End If
Else
' Calculate angle from offset.
Dim riseoverrun As Double = System.Convert.ToDouble(y2 - y1) / System.Convert.ToDouble(x2 - x1)
Dim radians As Double = Math.Atan(riseoverrun)
degrees = radians * (System.Convert.ToDouble(180) / Math.PI)
' Handle quadrant specific transformations.
If x2 - x1 < 0 OrElse y2 - y1 < 0 Then
degrees += 180
End If
If x2 - x1 > 0 AndAlso y2 - y1 < 0 Then
degrees -= 180
End If
If degrees < 0 Then
degrees += 360
End If
End If
Return degrees
End Function
End Class
Public Class AngleEditorTestControl
Inherits System.Windows.Forms.UserControl
Private int_angle As Double
<BrowsableAttribute(True), EditorAttribute(GetType(AngleEditor), GetType(System.Drawing.Design.UITypeEditor))> _
Public Property Angle() As Double
Get
Return int_angle
End Get
Set(ByVal Value As Double)
int_angle = Value
End Set
End Property
Public Sub New()
int_angle = 90
Me.Size = New Size(190, 42)
Me.BackColor = Color.Beige
End Sub
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
If Me.DesignMode Then
e.Graphics.DrawString("Use the Properties Window to access", New Font("Arial", 8), New SolidBrush(Color.Black), 3, 2)
e.Graphics.DrawString("the AngleEditor UITypeEditor by", New Font("Arial", 8), New SolidBrush(Color.Black), 3, 14)
e.Graphics.DrawString("configuring the ""Angle"" property.", New Font("Arial", 8), New SolidBrush(Color.Black), 3, 26)
Else
e.Graphics.DrawString("This example requires design mode.", New Font("Arial", 8), New SolidBrush(Color.Black), 3, 2)
End If
End Sub
End Class
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
using System.Windows.Forms;
using System.Windows.Forms.Design;
namespace AngleEditor
{
// This UITypeEditor can be associated with Int32, Double and Single
// properties to provide a design-mode angle selection interface.
[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust")]
public class AngleEditor : System.Drawing.Design.UITypeEditor
{
public AngleEditor()
{
}
// Indicates whether the UITypeEditor provides a form-based (modal) dialog,
// drop down dialog, or no UI outside of the properties window.
public override System.Drawing.Design.UITypeEditorEditStyle GetEditStyle(System.ComponentModel.ITypeDescriptorContext context)
{
return UITypeEditorEditStyle.DropDown;
}
// Displays the UI for value selection.
public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value)
{
// Return the value if the value is not of type Int32, Double and Single.
if( value.GetType() != typeof(double) && value.GetType() != typeof(float) && value.GetType() != typeof(int) )
return value;
// Uses the IWindowsFormsEditorService to display a
// drop-down UI in the Properties window.
IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if( edSvc != null )
{
// Display an angle selection control and retrieve the value.
AngleControl angleControl = new AngleControl((double)value);
edSvc.DropDownControl( angleControl );
// Return the value in the appropraite data format.
if( value.GetType() == typeof(double) )
return angleControl.angle;
else if( value.GetType() == typeof(float) )
return (float)angleControl.angle;
else if( value.GetType() == typeof(int) )
return (int)angleControl.angle;
}
return value;
}
// Draws a representation of the property's value.
public override void PaintValue(System.Drawing.Design.PaintValueEventArgs e)
{
int normalX = (e.Bounds.Width/2);
int normalY = (e.Bounds.Height/2);
// Fill background and ellipse and center point.
e.Graphics.FillRectangle(new SolidBrush(Color.DarkBlue), e.Bounds.X, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height);
e.Graphics.FillEllipse(new SolidBrush(Color.White), e.Bounds.X+1, e.Bounds.Y+1, e.Bounds.Width-3, e.Bounds.Height-3);
e.Graphics.FillEllipse(new SolidBrush(Color.SlateGray), normalX+e.Bounds.X-1, normalY+e.Bounds.Y-1, 3, 3);
// Draw line along the current angle.
double radians = ((double)e.Value*Math.PI) / (double)180;
e.Graphics.DrawLine( new Pen(new SolidBrush(Color.Red), 1), normalX+e.Bounds.X, normalY+e.Bounds.Y,
e.Bounds.X+ ( normalX + (int)( (double)normalX * Math.Cos( radians ) ) ),
e.Bounds.Y+ ( normalY + (int)( (double)normalY * Math.Sin( radians ) ) ) );
}
// Indicates whether the UITypeEditor supports painting a
// representation of a property's value.
public override bool GetPaintValueSupported(System.ComponentModel.ITypeDescriptorContext context)
{
return true;
}
}
// Provides a user interface for adjusting an angle value.
internal class AngleControl : System.Windows.Forms.UserControl
{
// Stores the angle.
public double angle;
// Stores the rotation offset.
private int rotation = 0;
// Control state tracking variables.
private int dbx = -10;
private int dby = -10;
private int overButton = -1;
public AngleControl(double initial_angle)
{
this.angle = initial_angle;
this.SetStyle( ControlStyles.AllPaintingInWmPaint, true );
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
// Set angle origin point at center of control.
int originX = (this.Width/2);
int originY = (this.Height/2);
// Fill background and ellipse and center point.
e.Graphics.FillRectangle(new SolidBrush(Color.DarkBlue), 0, 0, this.Width, this.Height);
e.Graphics.FillEllipse(new SolidBrush(Color.White), 1, 1, this.Width-3, this.Height-3);
e.Graphics.FillEllipse(new SolidBrush(Color.SlateGray), originX-1, originY-1, 3, 3);
// Draw angle markers.
int startangle = (270-rotation)%360;
e.Graphics.DrawString(startangle.ToString(), new Font("Arial", 8), new SolidBrush(Color.DarkGray), (this.Width/2)-10, 10);
startangle = (startangle+90)%360;
e.Graphics.DrawString(startangle.ToString(), new Font("Arial", 8), new SolidBrush(Color.DarkGray), this.Width-18, (this.Height/2)-6);
startangle = (startangle+90)%360;
e.Graphics.DrawString(startangle.ToString(), new Font("Arial", 8), new SolidBrush(Color.DarkGray), (this.Width/2)-6, this.Height-18);
startangle = (startangle+90)%360;
e.Graphics.DrawString(startangle.ToString(), new Font("Arial", 8), new SolidBrush(Color.DarkGray), 10, (this.Height/2)-6);
// Draw line along the current angle.
double radians = ((((angle+rotation)+360)%360)*Math.PI) / (double)180;
e.Graphics.DrawLine( new Pen(new SolidBrush(Color.Red), 1), originX, originY,
originX + (int)( (double)originX * (double)Math.Cos( radians ) ),
originY + (int)( (double)originY * (double)Math.Sin( radians ) ) );
// Output angle information.
e.Graphics.FillRectangle(new SolidBrush(Color.Gray), this.Width-84, 3, 82, 13);
e.Graphics.DrawString("Angle: "+angle.ToString("F4"), new Font("Arial", 8), new SolidBrush(Color.Yellow), this.Width-84, 2);
// Draw square at mouse position of last angle adjustment.
e.Graphics.DrawRectangle(new Pen(new SolidBrush(Color.Black), 1), dbx-2, dby-2, 4, 4);
// Draw rotation adjustment buttons.
if( overButton == 1 )
{
e.Graphics.FillRectangle(new SolidBrush(Color.Green), this.Width-28, this.Height-14, 12, 12);
e.Graphics.FillRectangle(new SolidBrush(Color.Gray), 2, this.Height-13, 110, 12);
e.Graphics.DrawString("Rotate 90 degrees left", new Font("Arial", 8), new SolidBrush(Color.White), 2, this.Height-14);
}
else
e.Graphics.FillRectangle(new SolidBrush(Color.DarkGreen), this.Width-28, this.Height-14, 12, 12);
if( overButton == 2 )
{
e.Graphics.FillRectangle(new SolidBrush(Color.Green), this.Width-14, this.Height-14, 12, 12);
e.Graphics.FillRectangle(new SolidBrush(Color.Gray), 2, this.Height-13, 116, 12);
e.Graphics.DrawString("Rotate 90 degrees right", new Font("Arial", 8), new SolidBrush(Color.White), 2, this.Height-14);
}
else
e.Graphics.FillRectangle(new SolidBrush(Color.DarkGreen), this.Width-14, this.Height-14, 12, 12);
e.Graphics.DrawEllipse(new Pen(new SolidBrush(Color.White), 1), this.Width-11, this.Height-11, 6, 6);
e.Graphics.DrawEllipse(new Pen(new SolidBrush(Color.White), 1), this.Width-25, this.Height-11, 6, 6);
if( overButton == 1 )
e.Graphics.FillRectangle(new SolidBrush(Color.Green), this.Width-25, this.Height-6, 4, 4);
else
e.Graphics.FillRectangle(new SolidBrush(Color.DarkGreen), this.Width-25, this.Height-6, 4, 4);
if( overButton == 2 )
e.Graphics.FillRectangle(new SolidBrush(Color.Green), this.Width-8, this.Height-6, 4, 4);
else
e.Graphics.FillRectangle(new SolidBrush(Color.DarkGreen), this.Width-8, this.Height-6, 4, 4);
e.Graphics.FillPolygon(new SolidBrush(Color.White), new Point[] { new Point(this.Width-7, this.Height-8), new Point(this.Width-3, this.Height-8), new Point(this.Width-5, this.Height-4) });
e.Graphics.FillPolygon(new SolidBrush(Color.White), new Point[] { new Point(this.Width-26, this.Height-8), new Point(this.Width-21, this.Height-8), new Point(this.Width-25, this.Height-4) });
}
protected override void OnMouseDown(System.Windows.Forms.MouseEventArgs e)
{
// Handle rotation adjustment button clicks.
if( e.X >= this.Width-28 && e.X <= this.Width-2 && e.Y >= this.Height-14 && e.Y <= this.Height-2 )
{
if( e.X <= this.Width-16 )
rotation -= 90;
else if( e.X >= this.Width-14 )
rotation += 90;
if( rotation < 0 )
rotation += 360;
rotation = rotation%360;
dbx=-10;
dby=-10;
}
else
UpdateAngle(e.X, e.Y);
this.Refresh();
}
protected override void OnMouseMove(System.Windows.Forms.MouseEventArgs e)
{
if( e.Button == MouseButtons.Left )
{
UpdateAngle(e.X, e.Y);
overButton = -1;
}
else if( e.X >= this.Width-28 && e.X <= this.Width-16 && e.Y >= this.Height-14 && e.Y <= this.Height-2 )
overButton = 1;
else if( e.X >= this.Width-14 && e.X <= this.Width-2 && e.Y >= this.Height-14 && e.Y <= this.Height-2 )
overButton = 2;
else
overButton = -1;
this.Refresh();
}
private void UpdateAngle(int mx, int my)
{
// Store mouse coordinates.
dbx = mx;
dby = my;
// Translate y coordinate input to GetAngle function to correct for ellipsoid distortion.
double widthToHeightRatio = (double)this.Width/(double)this.Height;
int tmy;
if( my == 0 )
tmy = my;
else if( my < this.Height/2 )
tmy = (this.Height/2)-(int)(((this.Height/2)-my)*widthToHeightRatio);
else
tmy = (this.Height/2)+(int)((double)(my-(this.Height/2))*widthToHeightRatio);
// Retrieve updated angle based on rise over run.
angle = (GetAngle(this.Width/2, this.Height/2, mx, tmy)-rotation)%360;
}
private double GetAngle(int x1, int y1, int x2, int y2)
{
double degrees;
// Avoid divide by zero run values.
if( x2-x1 == 0 )
{
if( y2 > y1 )
degrees = 90;
else
degrees = 270;
}
else
{
// Calculate angle from offset.
double riseoverrun = (double)(y2-y1)/(double)(x2-x1);
double radians = Math.Atan( riseoverrun );
degrees = radians * ((double)180/Math.PI);
// Handle quadrant specific transformations.
if( (x2-x1) < 0 || (y2-y1) < 0 )
degrees += 180;
if( (x2-x1) > 0 && (y2-y1) < 0 )
degrees -= 180;
if( degrees < 0 )
degrees += 360;
}
return degrees;
}
}
public class AngleEditorTestControl : System.Windows.Forms.UserControl
{
private double int_angle;
[BrowsableAttribute(true)]
[EditorAttribute(typeof(AngleEditor), typeof(System.Drawing.Design.UITypeEditor))]
public double Angle
{
get
{ return int_angle; }
set
{ int_angle = value; }
}
public AngleEditorTestControl()
{
int_angle = 90;
this.Size = new Size(190, 42);
this.BackColor = Color.Beige;
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
if( this.DesignMode )
{
e.Graphics.DrawString("Use the Properties Window to access", new Font("Arial", 8), new SolidBrush(Color.Black), 3,2);
e.Graphics.DrawString("the AngleEditor UITypeEditor by", new Font("Arial", 8), new SolidBrush(Color.Black), 3,14);
e.Graphics.DrawString("configuring the \"Angle\" property.", new Font("Arial", 8), new SolidBrush(Color.Black), 3,26);
}
else
e.Graphics.DrawString("This example requires design mode.", new Font("Arial", 8), new SolidBrush(Color.Black), 3,2);
}
}
}
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
#using <System.dll>
using namespace System;
using namespace System::ComponentModel;
using namespace System::Drawing;
using namespace System::Drawing::Design;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Design;
namespace AngleEditor
{
// Provides a user interface for adjusting an angle value.
ref class AngleControl: public System::Windows::Forms::UserControl
{
public:
// Stores the angle.
double angle;
private:
// Stores the rotation offset.
int rotation;
// Control state tracking variables.
int dbx;
int dby;
int overButton;
public:
AngleControl( double initial_angle )
{
this->angle = initial_angle;
this->SetStyle( static_cast<ControlStyles>(ControlStyles::AllPaintingInWmPaint), true );
rotation = 0;
dbx = -10;
dby = -10;
overButton = -1;
}
protected:
virtual void OnPaint( System::Windows::Forms::PaintEventArgs^ e ) override
{
// Set angle origin point at center of control.
int originX = (this->Width / 2);
int originY = (this->Height / 2);
// Fill background and ellipse and center point.
e->Graphics->FillRectangle( gcnew SolidBrush( Color::DarkBlue ), 0, 0, this->Width, this->Height );
e->Graphics->FillEllipse( gcnew SolidBrush( Color::White ), 1, 1, this->Width - 3, this->Height - 3 );
e->Graphics->FillEllipse( gcnew SolidBrush( Color::SlateGray ), originX - 1, originY - 1, 3, 3 );
// Draw angle markers.
int startangle = (270 - rotation) % 360;
e->Graphics->DrawString( startangle.ToString(), gcnew System::Drawing::Font( "Arial",8.0 ), gcnew SolidBrush( Color::DarkGray ), (float)(this->Width / 2) - 10, (float)10 );
startangle = (startangle + 90) % 360;
e->Graphics->DrawString( startangle.ToString(), gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::DarkGray ), (float)this->Width - 18, (float)(this->Height / 2) - 6 );
startangle = (startangle + 90) % 360;
e->Graphics->DrawString( startangle.ToString(), gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::DarkGray ), ((float)this->Width / 2) - 6, (float)this->Height - 18 );
startangle = (startangle + 90) % 360;
e->Graphics->DrawString( startangle.ToString(), gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::DarkGray ), (float)10, (float)(this->Height / 2) - 6 );
// Draw line along the current angle.
double radians = ((((int)(angle + rotation) + 360) % 360) * Math::PI) / (double)180;
e->Graphics->DrawLine( gcnew Pen( gcnew SolidBrush( Color::Red ),1 ), originX, originY, originX + (int)((double)originX * (double)Math::Cos( radians )), originY + (int)((double)originY * (double)Math::Sin( radians )) );
// Output angle information.
e->Graphics->FillRectangle( gcnew SolidBrush( Color::Gray ), this->Width - 84, 3, 82, 13 );
e->Graphics->DrawString( String::Format( "Angle: {0}", angle.ToString( "F4" ) ), gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Yellow ), (float)this->Width - 84, (float)2 );
// Draw square at mouse position of last angle adjustment.
e->Graphics->DrawRectangle( gcnew Pen( gcnew SolidBrush( Color::Black ),1 ), dbx - 2, dby - 2, 4, 4 );
// Draw rotation adjustment buttons.
if ( overButton == 1 )
{
e->Graphics->FillRectangle( gcnew SolidBrush( Color::Green ), this->Width - 28, this->Height - 14, 12, 12 );
e->Graphics->FillRectangle( gcnew SolidBrush( Color::Gray ), 2, this->Height - 13, 110, 12 );
e->Graphics->DrawString( "Rotate 90 degrees left", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::White ), (float)2, (float)this->Height - 14 );
}
else
e->Graphics->FillRectangle( gcnew SolidBrush( Color::DarkGreen ), this->Width - 28, this->Height - 14, 12, 12 );
if ( overButton == 2 )
{
e->Graphics->FillRectangle( gcnew SolidBrush( Color::Green ), this->Width - 14, this->Height - 14, 12, 12 );
e->Graphics->FillRectangle( gcnew SolidBrush( Color::Gray ), 2, this->Height - 13, 116, 12 );
e->Graphics->DrawString( "Rotate 90 degrees right", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::White ), (float)2, (float)this->Height - 14 );
}
else
e->Graphics->FillRectangle( gcnew SolidBrush( Color::DarkGreen ), this->Width - 14, this->Height - 14, 12, 12 );
e->Graphics->DrawEllipse( gcnew Pen( gcnew SolidBrush( Color::White ),1 ), this->Width - 11, this->Height - 11, 6, 6 );
e->Graphics->DrawEllipse( gcnew Pen( gcnew SolidBrush( Color::White ),1 ), this->Width - 25, this->Height - 11, 6, 6 );
if ( overButton == 1 )
e->Graphics->FillRectangle( gcnew SolidBrush( Color::Green ), this->Width - 25, this->Height - 6, 4, 4 );
else
e->Graphics->FillRectangle( gcnew SolidBrush( Color::DarkGreen ), this->Width - 25, this->Height - 6, 4, 4 );
if ( overButton == 2 )
e->Graphics->FillRectangle( gcnew SolidBrush( Color::Green ), this->Width - 8, this->Height - 6, 4, 4 );
else
e->Graphics->FillRectangle( gcnew SolidBrush( Color::DarkGreen ), this->Width - 8, this->Height - 6, 4, 4 );
array<Point>^ temp0 = {Point(this->Width - 7,this->Height - 8),Point(this->Width - 3,this->Height - 8),Point(this->Width - 5,this->Height - 4)};
e->Graphics->FillPolygon( gcnew SolidBrush( Color::White ), temp0 );
array<Point>^ temp1 = {Point(this->Width - 26,this->Height - 8),Point(this->Width - 21,this->Height - 8),Point(this->Width - 25,this->Height - 4)};
e->Graphics->FillPolygon( gcnew SolidBrush( Color::White ), temp1 );
}
virtual void OnMouseDown( System::Windows::Forms::MouseEventArgs^ e ) override
{
// Handle rotation adjustment button clicks.
if ( e->X >= this->Width - 28 && e->X <= this->Width - 2 && e->Y >= this->Height - 14 && e->Y <= this->Height - 2 )
{
if ( e->X <= this->Width - 16 )
rotation -= 90;
else
if ( e->X >= this->Width - 14 )
rotation += 90;
if ( rotation < 0 )
rotation += 360;
rotation = rotation % 360;
dbx = -10;
dby = -10;
}
else
UpdateAngle( e->X, e->Y );
this->Refresh();
}
virtual void OnMouseMove( System::Windows::Forms::MouseEventArgs^ e ) override
{
if ( e->Button == ::MouseButtons::Left )
{
UpdateAngle( e->X, e->Y );
overButton = -1;
}
else
if ( e->X >= this->Width - 28 && e->X <= this->Width - 16 && e->Y >= this->Height - 14 && e->Y <= this->Height - 2 )
overButton = 1;
else
if ( e->X >= this->Width - 14 && e->X <= this->Width - 2 && e->Y >= this->Height - 14 && e->Y <= this->Height - 2 )
overButton = 2;
else
overButton = -1;
this->Refresh();
}
private:
void UpdateAngle( int mx, int my )
{
// Store mouse coordinates.
dbx = mx;
dby = my;
// Translate y coordinate input to GetAngle function to correct for ellipsoid distortion.
double widthToHeightRatio = (double)this->Width / (double)this->Height;
int tmy;
if ( my == 0 )
tmy = my;
else
if ( my < this->Height / 2 )
tmy = (this->Height / 2) - (int)(((this->Height / 2) - my) * widthToHeightRatio);
else
tmy = (this->Height / 2) + (int)((double)(my - (this->Height / 2)) * widthToHeightRatio);
// Retrieve updated angle based on rise over run.
angle = (int)(GetAngle( this->Width / 2, this->Height / 2, mx, tmy ) - rotation) % 360;
}
double GetAngle( int x1, int y1, int x2, int y2 )
{
double degrees;
// Avoid divide by zero run values.
if ( x2 - x1 == 0 )
{
if ( y2 > y1 )
degrees = 90;
else
degrees = 270;
}
else
{
// Calculate angle from offset.
double riseoverrun = (double)(y2 - y1) / (double)(x2 - x1);
double radians = Math::Atan( riseoverrun );
degrees = radians * ((double)180 / Math::PI);
// Handle quadrant specific transformations.
if ( (x2 - x1) < 0 || (y2 - y1) < 0 )
degrees += 180;
if ( (x2 - x1) > 0 && (y2 - y1) < 0 )
degrees -= 180;
if ( degrees < 0 )
degrees += 360;
}
return degrees;
}
};
// This UITypeEditor can be associated with Int32, Double and Single
// properties to provide a design-mode angle selection interface.
[System::Security::Permissions::PermissionSetAttribute
(System::Security::Permissions::SecurityAction::InheritanceDemand, Name="FullTrust")]
[System::Security::Permissions::PermissionSetAttribute
(System::Security::Permissions::SecurityAction::LinkDemand, Name="FullTrust")]
public ref class AngleEditor: public System::Drawing::Design::UITypeEditor
{
public:
AngleEditor(){}
// Indicates whether the UITypeEditor provides a form-based (modal) dialog,
// drop down dialog, or no UI outside of the properties window.
virtual System::Drawing::Design::UITypeEditorEditStyle GetEditStyle( System::ComponentModel::ITypeDescriptorContext^ context ) override
{
return UITypeEditorEditStyle::DropDown;
}
// Displays the UI for value selection.
virtual Object^ EditValue( System::ComponentModel::ITypeDescriptorContext^ context, System::IServiceProvider^ provider, Object^ value ) override
{
// Return the value if the value is not of type Int32, Double and Single.
if ( value->GetType() != double::typeid && value->GetType() != float::typeid && value->GetType() != int::typeid )
return value;
// Uses the IWindowsFormsEditorService* to display a
// drop-down UI in the Properties window.
IWindowsFormsEditorService^ edSvc = dynamic_cast<IWindowsFormsEditorService^>(provider->GetService( IWindowsFormsEditorService::typeid ));
if ( edSvc != nullptr )
{
// Display an angle selection control and retrieve the value.
AngleControl^ angleControl = gcnew AngleControl( *dynamic_cast<double^>(value) );
edSvc->DropDownControl( angleControl );
// Return the value in the appropraite data format.
if ( value->GetType() == double::typeid )
return angleControl->angle;
else
if ( value->GetType() == float::typeid )
return (float)angleControl->angle;
else
if ( value->GetType() == int::typeid )
return (int)angleControl->angle;
}
return value;
}
// Draws a representation of the property's value.
private:
void PaintValue( System::Drawing::Design::PaintValueEventArgs^ e ) new
{
int normalX = (e->Bounds.Width / 2);
int normalY = (e->Bounds.Height / 2);
// Fill background and ellipse and center point.
e->Graphics->FillRectangle( gcnew SolidBrush( Color::DarkBlue ), e->Bounds.X, e->Bounds.Y, e->Bounds.Width, e->Bounds.Height );
e->Graphics->FillEllipse( gcnew SolidBrush( Color::White ), e->Bounds.X + 1, e->Bounds.Y + 1, e->Bounds.Width - 3, e->Bounds.Height - 3 );
e->Graphics->FillEllipse( gcnew SolidBrush( Color::SlateGray ), normalX + e->Bounds.X - 1, normalY + e->Bounds.Y - 1, 3, 3 );
// Draw line along the current angle.
double radians = ( *dynamic_cast<double^>(e->Value) * Math::PI) / (double)180;
e->Graphics->DrawLine( gcnew Pen( gcnew SolidBrush( Color::Red ),1 ), normalX + e->Bounds.X, normalY + e->Bounds.Y, e->Bounds.X + (normalX + (int)((double)normalX * Math::Cos( radians ))), e->Bounds.Y + (normalY + (int)((double)normalY * Math::Sin( radians ))) );
}
// Indicates whether the UITypeEditor supports painting a
// representation of a property's value.
bool GetPaintValueSupported( System::ComponentModel::ITypeDescriptorContext^ context ) new
{
return true;
}
};
public ref class AngleEditorTestControl: public System::Windows::Forms::UserControl
{
private:
double int_angle;
public:
property double Angle
{
[BrowsableAttribute(true)]
[EditorAttribute(AngleEditor::typeid,System::Drawing::Design::UITypeEditor::typeid)]
double get()
{
return int_angle;
}
void set( double value )
{
int_angle = value;
}
}
AngleEditorTestControl()
{
int_angle = 90;
this->Size = System::Drawing::Size( 190, 42 );
this->BackColor = Color::Beige;
}
protected:
virtual void OnPaint( System::Windows::Forms::PaintEventArgs^ e ) override
{
if ( this->DesignMode )
{
e->Graphics->DrawString( "Use the Properties Window to access",
gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 3, 2 );
e->Graphics->DrawString( "the AngleEditor UITypeEditor by",
gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 3, 14 );
e->Graphics->DrawString( "configuring the \"Angle\" property.",
gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 3, 26 );
}
else
e->Graphics->DrawString( "This example requires design mode.",
gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 3, 2 );
}
};
}
package AngleEditor;
import System.*;
import System.ComponentModel.*;
import System.Drawing.*;
import System.Drawing.Design.*;
import System.Windows.Forms.*;
import System.Windows.Forms.Design.*;
import System.Security.Permissions.*;
// This UITypeEditor can be associated with Int32, Double and Single
// properties to provide a design-mode angle selection interface.
/** @attribute PermissionSet(SecurityAction.Demand, Name = "FullTrust")
*/
public class AngleEditor extends System.Drawing.Design.UITypeEditor
{
public AngleEditor()
{
} //AngleEditor
// Indicates whether the UITypeEditor provides a form-based (modal)
// dialog, drop down dialog, or no UI outside of the properties window.
public System.Drawing.Design.UITypeEditorEditStyle GetEditStyle(
System.ComponentModel.ITypeDescriptorContext context)
{
return UITypeEditorEditStyle.DropDown;
} //GetEditStyle
// Displays the UI for value selection.
public Object EditValue(System.ComponentModel.ITypeDescriptorContext
context, System.IServiceProvider provider, Object value)
{
// Return the value if the value is not of type Int32, Double
// and Single.
if (!value.GetType().Equals(double.class.ToType())
&& !value.GetType().Equals(float.class.ToType())
&& !value.GetType().Equals(int.class.ToType())) {
return value;
}
// Uses the IWindowsFormsEditorService to display a
// drop-down UI in the Properties window.
IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)
provider.GetService(IWindowsFormsEditorService.class.ToType());
if (edSvc != null) {
// Display an angle selection control and retrieve the value.
AngleControl angleControl =
new AngleControl(Convert.ToDouble(value));
edSvc.DropDownControl(angleControl);
// Return the value in the appropraite data format.
if (value.GetType().Equals(double.class.ToType())) {
return (System.Double)(angleControl.angle);
}
else {
if (value.GetType().Equals(float.class.ToType())) {
return (System.Single)(angleControl.angle);
}
else {
if (value.GetType().Equals(int.class.ToType())) {
return (Int32)(angleControl.angle);
}
}
}
}
return value;
} //EditValue
// Draws a representation of the property's value.
public void PaintValue(System.Drawing.Design.PaintValueEventArgs e)
{
int normalX = e.get_Bounds().get_Width() / 2;
int normalY = e.get_Bounds().get_Height() / 2;
// Fill background and ellipse and center point.
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_DarkBlue()),
e.get_Bounds().get_X(), e.get_Bounds().get_Y(),
e.get_Bounds().get_Width(), e.get_Bounds().get_Height());
e.get_Graphics().FillEllipse(new SolidBrush(Color.get_White()),
e.get_Bounds().get_X() + 1, e.get_Bounds().get_Y() + 1,
e.get_Bounds().get_Width() - 3, e.get_Bounds().get_Height() - 3);
e.get_Graphics().FillEllipse(new SolidBrush(Color.get_SlateGray()),
normalX + e.get_Bounds().get_X() - 1,
normalY + e.get_Bounds().get_Y() - 1, 3, 3);
// Draw line along the current angle.
double radians = (double)(System.Double)(e.get_Value())
* System.Math.PI / (double)(180);
e.get_Graphics().DrawLine(new Pen(new SolidBrush(Color.get_Red()), 1),
normalX + e.get_Bounds().get_X(),
normalY + e.get_Bounds().get_Y(),
e.get_Bounds().get_X()
+ (normalX + (int)((double)(normalX) * System.Math.Cos(radians))),
e.get_Bounds().get_Y()
+ (normalY + (int)((double)(normalY) * System.Math.Sin(radians))));
} //PaintValue
// Indicates whether the UITypeEditor supports painting a
// representation of a property's value.
public boolean GetPaintValueSupported(
System.ComponentModel.ITypeDescriptorContext context)
{
return true;
} //GetPaintValueSupported
} //AngleEditor
// Provides a user interface for adjusting an angle value.
class AngleControl extends System.Windows.Forms.UserControl
{
// Stores the angle.
public double angle;
// Stores the rotation offset.
private int rotation = 0;
// Control state tracking variables.
private int dbX = -10;
private int dbY = -10;
private int overButton = -1;
public AngleControl(double initialAngle)
{
this.angle = initialAngle;
this.SetStyle(ControlStyles.OptimizedDoubleBuffer
| ControlStyles.AllPaintingInWmPaint, true);
} //AngleControl
protected void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
// Set angle origin point at center of control.
int originX = this.get_Width() / 2;
int originY = this.get_Height() / 2;
// Fill background and ellipse and center point.
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_DarkBlue()),
0, 0, this.get_Width(), this.get_Height());
e.get_Graphics().FillEllipse(new SolidBrush(Color.get_White()), 1, 1,
this.get_Width() - 3, this.get_Height() - 3);
e.get_Graphics().FillEllipse(new SolidBrush(Color.get_SlateGray()),
originX - 1, originY - 1, 3, 3);
// Draw angle markers.
int startAngle = (270 - rotation) % 360;
e.get_Graphics().DrawString(System.Convert.ToString(startAngle),
new Font("Arial", 8), new SolidBrush(Color.get_DarkGray()),
this.get_Width() / 2 - 10, 10);
startAngle = (startAngle + 90) % 360;
e.get_Graphics().DrawString(System.Convert.ToString(startAngle),
new Font("Arial", 8), new SolidBrush(Color.get_DarkGray()),
this.get_Width() - 18, this.get_Height() / 2 - 6);
startAngle = (startAngle + 90) % 360;
e.get_Graphics().DrawString(System.Convert.ToString(startAngle),
new Font("Arial", 8), new SolidBrush(Color.get_DarkGray()),
this.get_Width() / 2 - 6, this.get_Height() - 18);
startAngle = (startAngle + 90) % 360;
e.get_Graphics().DrawString(System.Convert.ToString(startAngle),
new Font("Arial", 8), new SolidBrush(Color.get_DarkGray()), 10,
this.get_Height() / 2 - 6);
// Draw line along the current angle.
double radians = ((angle + rotation + 360) % 360) * System.Math.PI
/ (double)180;
e.get_Graphics().DrawLine(new Pen(new SolidBrush(Color.get_Red()), 1),
originX, originY,
originX + (int)((double)(originX) * (double)
(System.Math.Cos(radians))), originY + (int)((double)(originY)
* (double)(System.Math.Sin(radians))));
// Output angle information.
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_Gray()),
this.get_Width() - 84, 3, 82, 13);
e.get_Graphics().DrawString("Angle: " + System.Convert.ToString(angle),
new Font("Arial", 8), new SolidBrush(Color.get_Yellow()),
this.get_Width() - 84, 2);
// Draw square at mouse position of last angle adjustment.
e.get_Graphics().DrawRectangle(new Pen(new SolidBrush(
Color.get_Black()), 1), dbX - 2, dbY - 2, 4, 4);
// Draw rotation adjustment buttons.
if (overButton == 1) {
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_Green()),
this.get_Width() - 28, this.get_Height() - 14, 12, 12);
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_Gray()), 2,
this.get_Height() - 13, 110, 12);
e.get_Graphics().DrawString("Rotate 90 degrees left",
new Font("Arial", 8), new SolidBrush(Color.get_White()), 2,
this.get_Height() - 14);
}
else {
e.get_Graphics().FillRectangle(
new SolidBrush(Color.get_DarkGreen()),
this.get_Width() - 28, this.get_Height() - 14, 12, 12);
}
if (overButton == 2) {
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_Green()),
this.get_Width() - 14, this.get_Height() - 14, 12, 12);
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_Gray()), 2,
this.get_Height() - 13, 116, 12);
e.get_Graphics().DrawString("Rotate 90 degrees right",
new Font("Arial", 8), new SolidBrush(Color.get_White()), 2,
this.get_Height() - 14);
}
else {
e.get_Graphics().FillRectangle(
new SolidBrush(Color.get_DarkGreen()),
this.get_Width() - 14, this.get_Height() - 14, 12, 12);
}
e.get_Graphics().DrawEllipse(new Pen(new SolidBrush(Color.get_White()),
1), this.get_Width() - 11, this.get_Height() - 11, 6, 6);
e.get_Graphics().DrawEllipse(new Pen(new SolidBrush(Color.get_White()),
1), this.get_Width() - 25, this.get_Height() - 11, 6, 6);
if (overButton == 1) {
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_Green()),
this.get_Width() - 25, this.get_Height() - 6, 4, 4);
}
else {
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_DarkGreen()),
this.get_Width() - 25, this.get_Height() - 6, 4, 4);
}
if (overButton == 2) {
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_Green()),
this.get_Width() - 8, this.get_Height() - 6, 4, 4);
}
else {
e.get_Graphics().FillRectangle(new SolidBrush(Color.get_DarkGreen()),
this.get_Width() - 8, this.get_Height() - 6, 4, 4);
}
e.get_Graphics().FillPolygon(new SolidBrush(Color.get_White()),
new Point[] {
new Point(this.get_Width() - 7, this.get_Height() - 8),
new Point(this.get_Width() - 3, this.get_Height() - 8),
new Point(this.get_Width() - 5, this.get_Height() - 4) });
e.get_Graphics().FillPolygon(new SolidBrush(Color.get_White()),
new Point[] {
new Point(this.get_Width() - 26, this.get_Height() - 8),
new Point(this.get_Width() - 21, this.get_Height() - 8),
new Point(this.get_Width() - 25, this.get_Height() - 4) });
} //OnPaint
protected void OnMouseDown(System.Windows.Forms.MouseEventArgs e)
{
// Handle rotation adjustment button clicks.
if (e.get_X() >= this.get_Width() - 28
&& e.get_X() <= this.get_Width() - 2
&& e.get_Y() >= this.get_Height() - 14
&& e.get_Y() <= this.get_Height() - 2) {
if (e.get_X() <= this.get_Width() - 16) {
rotation -= 90;
}
else {
if (e.get_X() >= this.get_Width() - 14) {
rotation += 90;
}
}
if (rotation < 0) {
rotation += 360;
}
rotation = rotation % 360;
dbX = -10;
dbY = -10;
}
else {
UpdateAngle(e.get_X(), e.get_Y());
}
this.Refresh();
} //OnMouseDown
protected void OnMouseMove(System.Windows.Forms.MouseEventArgs e)
{
if (e.get_Button().Equals(MouseButtons.Left)) {
UpdateAngle(e.get_X(), e.get_Y());
overButton = -1;
}
else {
if (e.get_X() >= this.get_Width() - 28
&& e.get_X() <= this.get_Width() - 16
&& e.get_Y() >= this.get_Height() - 14
&& e.get_Y() <= this.get_Height() - 2) {
overButton = 1;
}
else {
if (e.get_X() >= this.get_Width() - 14
&& e.get_X() <= this.get_Width() - 2
&& e.get_Y() >= this.get_Height() - 14
&& e.get_Y() <= this.get_Height() - 2) {
overButton = 2;
}
else {
overButton = -1;
}
}
}
this.Refresh();
} //OnMouseMove
private void UpdateAngle(int mX, int mY)
{
// Store mouse coordinates.
dbX = mX;
dbY = mY;
// Translate y coordinate input to GetAngle function to correct for
// ellipsoid distortion.
double widthToHeightRatio =
(double)(this.get_Width()) / (double)(this.get_Height());
int tmY;
if (mY == 0) {
tmY = mY;
}
else {
if (mY < this.get_Height() / 2) {
tmY = this.get_Height() / 2
- (int)((this.get_Height() / 2 - mY) * widthToHeightRatio);
}
else {
tmY = this.get_Height() / 2 + (int)((double)
(mY - this.get_Height() / 2) * widthToHeightRatio);
}
}
// Retrieve updated angle based on rise over run.
angle = (GetAngle(this.get_Width() / 2, this.get_Height() / 2, mX,
tmY) - rotation) % 360;
} //UpdateAngle
private double GetAngle(int x1, int y1, int x2, int y2)
{
double degrees;
// Avoid divide by zero run values.
if (x2 - x1 == 0) {
if (y2 > y1) {
degrees = 90;
}
else {
degrees = 270;
}
}
else {
// Calculate angle from offset.
double riseOverRun = (double)(y2 - y1) / (double)(x2 - x1);
double radians = System.Math.Atan(riseOverRun);
degrees = radians * (double)(180) / System.Math.PI;
// Handle quadrant specific transformations.
if (x2 - x1 < 0 || y2 - y1 < 0) {
degrees += 180;
}
if (x2 - x1 > 0 && y2 - y1 < 0) {
degrees -= 180;
}
if (degrees < 0) {
degrees += 360;
}
}
return degrees;
} //GetAngle
} //AngleControl
public class AngleEditorTestControl extends System.Windows.Forms.UserControl
{
private double intAngle;
/** @attribute BrowsableAttribute(true)
*/
/** @attribute EditorAttribute(AngleEditor.class,
System.Drawing.Design.UITypeEditor.class)
*/
/** @property
*/
public double get_Angle()
{
return intAngle;
} //get_Angle
/** @property
*/
public void set_Angle(double value)
{
intAngle = value;
} //set_Angle
public AngleEditorTestControl()
{
intAngle = 90;
this.set_Size(new Size(190, 42));
this.set_BackColor(Color.get_Beige());
} //AngleEditorTestControl
protected void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
if (this.get_DesignMode()) {
e.get_Graphics().DrawString("Use the Properties Window to access",
new Font("Arial", 8), new SolidBrush(Color.get_Black()), 3, 2);
e.get_Graphics().DrawString("the AngleEditor UITypeEditor by",
new Font("Arial", 8), new SolidBrush(Color.get_Black()), 3, 14);
e.get_Graphics().DrawString("configuring the \"Angle\" property.",
new Font("Arial", 8), new SolidBrush(Color.get_Black()), 3, 26);
}
else {
e.get_Graphics().DrawString("This example requires design mode.",
new Font("Arial", 8), new SolidBrush(Color.get_Black()), 3, 2);
}
} //OnPaint
} //AngleEditorTestControl
.NET Framework-Sicherheit
- NamedPermissionSet für Vollzugriff auf Systemressourcen. Anforderungswerte: LinkDemand, InheritanceDemand. Zugeordneter Zustand: FullTrust
Vererbungshierarchie
System.Object
System.Drawing.Design.UITypeEditor
Abgeleitete Klassen
Threadsicherheit
Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.
Plattformen
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.
Versionsinformationen
.NET Framework
Unterstützt in: 2.0, 1.1, 1.0
Siehe auch
Referenz
UITypeEditor-Member
System.Drawing.Design-Namespace
ITypeDescriptorContext
IServiceProvider
Weitere Ressourcen
Übersicht über Typ-Editoren für Benutzeroberflächen
Gewusst wie: Implementieren eines Typ-Editors für die Benutzeroberfläche