UITypeEditor Classe
Definição
Importante
Algumas informações se referem a produtos de pré-lançamento que podem ser substancialmente modificados antes do lançamento. A Microsoft não oferece garantias, expressas ou implícitas, das informações aqui fornecidas.
Fornece uma classe base que pode ser usada para criar editores de valor que podem fornecer uma interface do usuário para representar e editar os valores dos objetos dos tipos de dados com suporte.
public ref class UITypeEditorpublic class UITypeEditortype UITypeEditor = classPublic Class UITypeEditor- Herança
-
UITypeEditor
- Derivado
Exemplos
O exemplo de código a seguir demonstra que um UITypeEditor pode ser associado a uma propriedade inteira, dupla ou float usando um EditorAttribute para fornecer uma interface de seleção angular da janela Propriedades no modo de design. Este exemplo usa a IWindowsFormsEditorService interface para exibir um controle suspenso na janela Propriedades no modo de design. Compile o código e adicione o assembly à Caixa de Ferramentas usando o comando Personalizar Caixa de Ferramentas no menu Ferramentas do Visual Studio. Crie uma instância do AngleTestControl e clique no botão suspenso ao lado da propriedade Angle na janela Propriedades para configurar a propriedade usando o 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.
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
Comentários
A UITypeEditor classe fornece uma classe base da qual você pode derivar e estender para implementar um editor de tipo personalizado para o ambiente de tempo de design. Normalmente, seu editor de tipo personalizado interage com o PropertyGrid controle .
Editores de tipos personalizados são úteis em situações em que um editor de valor de caixa de texto é insuficiente para selecionar efetivamente os valores de determinados tipos.
Para implementar um editor personalizado de tipo de interface do usuário em tempo de design, execute as seguintes etapas:
Defina uma classe derivada de UITypeEditor.
Substitua o EditValue método para manipular a interface do usuário, o processamento de entrada do usuário e a atribuição de valor.
Substitua o GetEditStyle método para informar a janela Propriedades do tipo de estilo do editor que o editor usará.
Você pode adicionar suporte adicional para pintar a representação de um valor na janela Propriedades executando as seguintes etapas:
Substitua o GetPaintValueSupported método para indicar que o editor dá suporte à exibição da representação do valor.
Substitua o PaintValue método para implementar a exibição da representação do valor.
Substitua o UITypeEditor método de construtor se o editor tiver um comportamento de inicialização.
Observação
A UITypeEditor classe não dá suporte a layouts da direita para a esquerda (RTL).
Para obter mais informações sobre como aprimorar o suporte ao tempo de design, consulte Estendendo o suporte Design-Time. Para obter mais informações sobre como implementar um UITypeEditor, consulte Visão geral dos Editores de Tipo de Interface do Usuário.
Construtores
| UITypeEditor() |
Inicializa uma nova instância da classe UITypeEditor. |
Propriedades
| IsDropDownResizable |
Obtém um valor que indica se os editores de lista suspensa devem ser redimensionáveis pelo usuário. |
Métodos
| EditValue(IServiceProvider, Object) |
Edita o valor do objeto especificado usando o estilo de editor indicado pelo método GetEditStyle(). |
| EditValue(ITypeDescriptorContext, IServiceProvider, Object) |
Edita o valor do objeto especificado usando o editor de estilo indicado pelo método GetEditStyle(). |
| Equals(Object) |
Determina se o objeto especificado é igual ao objeto atual. (Herdado de Object) |
| GetEditStyle() |
Obtém o estilo de editor usado pelo método EditValue(IServiceProvider, Object). |
| GetEditStyle(ITypeDescriptorContext) |
Obtém o estilo de editor usado pelo método EditValue(IServiceProvider, Object). |
| GetHashCode() |
Serve como a função de hash padrão. (Herdado de Object) |
| GetPaintValueSupported() |
Indica se esse editor é compatível com pintura de uma representação do valor de um objeto. |
| GetPaintValueSupported(ITypeDescriptorContext) |
Indica se o contexto especificado é compatível com pintura de uma representação do valor de um objeto no contexto especificado. |
| GetType() |
Obtém o Type da instância atual. (Herdado de Object) |
| MemberwiseClone() |
Cria uma cópia superficial do Object atual. (Herdado de Object) |
| PaintValue(Object, Graphics, Rectangle) |
Pinta uma representação do valor do objeto especificado na tela especificada. |
| PaintValue(PaintValueEventArgs) |
Pinta uma representação do valor de um objeto usando o PaintValueEventArgs especificado. |
| ToString() |
Retorna uma cadeia de caracteres que representa o objeto atual. (Herdado de Object) |
Aplica-se a
Confira também
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