UITypeEditor Класс

Определение

Предоставляет базовый класс, используемый для конструирования редакторов значений, которые обеспечивают интерфейс пользователя визуализацией и редактированием значений объектов поддерживаемых типов данных.Provides a base class that can be used to design value editors that can provide a user interface (UI) for representing and editing the values of objects of the supported data types.

public ref class UITypeEditor
public class UITypeEditor
type UITypeEditor = class
Public Class UITypeEditor
Наследование
UITypeEditor
Производный

Примеры

В следующем примере кода показано, что UITypeEditor можно связать с целочисленным, двойным или плавающим свойством EditorAttribute с помощью, чтобы предоставить интерфейс выбора угла из окно свойств в режиме конструктора.The following code example demonstrates that a UITypeEditor can be associated with an integer, double, or float property using an EditorAttribute to provide an angle selection interface from the Properties window in design mode. В этом примере IWindowsFormsEditorService интерфейс используется для вывода раскрывающегося элемента управления в окно свойств в режиме конструктора.This example uses the IWindowsFormsEditorService interface to display a drop-down control in the Properties window in design mode. Скомпилируйте код и добавьте сборку на панель элементов с помощью команды Настройка панели элементов в меню Сервис Visual Studio.Compile the code and add the assembly to the Toolbox using the Customize Toolbox command on the Tools menu of Visual Studio. Создайте экземпляр компонента AngleTestControl и нажмите кнопку раскрывающегося списка рядом со свойством Angle в окно свойств, чтобы настроить свойство с помощью редактора.Create an instance of the AngleTestControl and click the drop-down button next to the Angle property in the Properties window to configure the property using the editor.

#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 );
      }
   };
}
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);
            }
        }
    }
}
Option Strict Off
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 value.GetType() IsNot GetType(Double) AndAlso value.GetType() IsNot GetType(Single) AndAlso value.GetType() IsNot 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 (edSvc IsNot 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

Комментарии

UITypeEditor Класс предоставляет базовый класс, который можно унаследовать и расширить для реализации пользовательского редактора типов для среды времени разработки.The UITypeEditor class provides a base class that you can derive from and extend to implement a custom type editor for the design-time environment. Как правило, пользовательский редактор типов взаимодействует с PropertyGrid элементом управления.Typically, your custom type editor interacts with the PropertyGrid control.

Пользовательские редакторы типов полезны в ситуациях, когда редактор значений текстового поля недостаточен для эффективного выбора значений определенных типов.Custom type editors are useful in situations where a text-box value editor is insufficient to effectively select the values of certain types.

Чтобы реализовать пользовательский редактор типов пользовательского интерфейса во время разработки, необходимо выполнить следующие действия.To implement a custom design-time UI type editor, you must perform the following steps:

  • Определите класс, производный от класса UITypeEditor.Define a class that derives from UITypeEditor.

  • Переопределите EditValue метод для обработки пользовательского интерфейса, обработки вводимых пользователем данных и назначения значения.Override the EditValue method to handle the user interface, user input processing, and value assignment.

  • Переопределите GetEditStyle метод, чтобы сообщить окно свойств типа стиля редактора, который будет использоваться редактором.Override the GetEditStyle method to inform the Properties window of the type of editor style that the editor will use.

Можно добавить дополнительную поддержку для рисования представления значения в окно свойств, выполнив следующие действия.You can add additional support for painting a value's representation in the Properties window by performing the following steps:

  • Переопределите GetPaintValueSupported метод, чтобы указать, что редактор поддерживает отображение представления значения.Override the GetPaintValueSupported method to indicate that the editor supports displaying the value's representation.

  • Переопределите PaintValue метод, чтобы реализовать отображение представления значения.Override the PaintValue method to implement the display of the value's representation.

  • Переопределите UITypeEditor метод конструктора, если редактор должен иметь поведение инициализации.Override the UITypeEditor constructor method if the editor should have initialization behavior.

Примечание

UITypeEditor Класс не поддерживает макеты с направлением письма справа налево.The UITypeEditor class does not support right-to-left (RTL) layouts.

Дополнительные сведения об улучшении поддержки во время разработки см. в разделе расширение поддержки времени разработки.For more information about enhancing design-time support, see Extending Design-Time Support. Дополнительные сведения о реализации UITypeEditorсм. в разделе Общие сведения о редакторах типов пользовательского интерфейса.For more information on implementing a UITypeEditor, see User Interface Type Editors Overview.

Конструкторы

UITypeEditor()

Инициализирует новый экземпляр класса UITypeEditor.Initializes a new instance of the UITypeEditor class.

Свойства

IsDropDownResizable

Возвращает значение, указывающее, должен ли пользователь иметь возможность изменять размер редакторов с раскрывающимися списками.Gets a value indicating whether drop-down editors should be resizable by the user.

Методы

EditValue(IServiceProvider, Object)

Изменяет значение заданного объекта, используя стиль редактирования, определенного при помощи метода GetEditStyle().Edits the value of the specified object using the editor style indicated by the GetEditStyle() method.

EditValue(ITypeDescriptorContext, IServiceProvider, Object)

Изменяет значение заданного объекта, используя стиль редактирования, определенного при помощи метода GetEditStyle().Edits the specified object's value using the editor style indicated by the GetEditStyle() method.

Equals(Object)

Определяет, равен ли указанный объект текущему объекту.Determines whether the specified object is equal to the current object.

(Унаследовано от Object)
GetEditStyle()

Получает стиль редактирования, используемый методом EditValue(IServiceProvider, Object).Gets the editor style used by the EditValue(IServiceProvider, Object) method.

GetEditStyle(ITypeDescriptorContext)

Получает стиль редактирования, используемый методом EditValue(IServiceProvider, Object).Gets the editor style used by the EditValue(IServiceProvider, Object) method.

GetHashCode()

Служит в качестве хэш-функции по умолчанию.Serves as the default hash function.

(Унаследовано от Object)
GetPaintValueSupported()

Указывает, поддерживает ли данный редактор рисование визуального представления значения объекта.Indicates whether this editor supports painting a representation of an object's value.

GetPaintValueSupported(ITypeDescriptorContext)

Указывает, поддерживает ли указанный контекст художественное оформление значения объекта в пределах определенного контекста.Indicates whether the specified context supports painting a representation of an object's value within the specified context.

GetType()

Возвращает объект Type для текущего экземпляра.Gets the Type of the current instance.

(Унаследовано от Object)
MemberwiseClone()

Создает неполную копию текущего объекта Object.Creates a shallow copy of the current Object.

(Унаследовано от Object)
PaintValue(Object, Graphics, Rectangle)

Рисует представление значения указанного объекта на заданной основе.Paints a representation of the value of the specified object to the specified canvas.

PaintValue(PaintValueEventArgs)

Рисует представление значения объекта с помощью указанного аргумента PaintValueEventArgs.Paints a representation of the value of an object using the specified PaintValueEventArgs.

ToString()

Возвращает строку, представляющую текущий объект.Returns a string that represents the current object.

(Унаследовано от Object)

Безопасность

NamedPermissionSet
для полного доступа к системным ресурсам.for full access to system resources. Значения спроса: LinkDemand, InheritanceDemand.Demand values: LinkDemand, InheritanceDemand. Связанное состояние:Associated state:

Применяется к

Дополнительно