Graphics.PageScale Propriedade

Definição

Namespace:

System.Drawing

Assembly:

System.Drawing.Common.dll

Pacote:

System.Drawing.Common v8.0.0

Origem:

Graphics.cs

Obtém ou define o dimensionamento entre unidades do mundo e de página para este Graphics.

public:
 property float PageScale { float get(); void set(float value); };

public float PageScale { get; set; }

member this.PageScale : single with get, set

Public Property PageScale As Single

Valor da propriedade

Single

Esta propriedade especifica um valor para o dimensionamento entre unidades de mundo e de página para este Graphics.

Exemplos

O exemplo de código a seguir demonstra como usar os PageScale membros e TranslateTransform para alterar a escala e a origem ao desenhar um retângulo.

Este exemplo foi projetado para ser usado com Windows Forms. Cole o código em um formulário e chame o ChangePageScaleAndTranslateTransform método ao manipular o evento do Paint formulário, passando e como PaintEventArgs.

private:
   void ChangePageScaleAndTranslateTransform( PaintEventArgs^ e )
   {
      // Create a rectangle.
      Rectangle rectangle1 = Rectangle(20,20,50,100);

      // Draw its outline.
      e->Graphics->DrawRectangle( Pens::SlateBlue, rectangle1 );

      // Change the page scale.  
      e->Graphics->PageScale = 2.0F;

      // Call TranslateTransform to change the origin of the
      //  Graphics object.
      e->Graphics->TranslateTransform( 10.0F, 10.0F );

      // Draw the rectangle again.
      e->Graphics->DrawRectangle( Pens::Tomato, rectangle1 );

      // Set the page scale and origin back to their original values.
      e->Graphics->PageScale = 1.0F;
      e->Graphics->ResetTransform();
      SolidBrush^ transparentBrush = gcnew SolidBrush( Color::FromArgb( 50, Color::Yellow ) );

      // Create a new rectangle with the coordinates you expect
      // after setting PageScale and calling TranslateTransform:
      // x = (10 + 20) * 2
      // y = (10 + 20) * 2
      // Width = 50 * 2
      // Length = 100 * 2
      Rectangle newRectangle = Rectangle(60,60,100,200);

      // Fill in the rectangle with a semi-transparent color.
      e->Graphics->FillRectangle( transparentBrush, newRectangle );
   }

private void ChangePageScaleAndTranslateTransform(PaintEventArgs e)
{

    // Create a rectangle.
    Rectangle rectangle1 = new Rectangle(20, 20, 50, 100);

    // Draw its outline.
    e.Graphics.DrawRectangle(Pens.SlateBlue, rectangle1);

    // Change the page scale.  
    e.Graphics.PageScale = 2.0F;

    // Call TranslateTransform to change the origin of the
    //  Graphics object.
    e.Graphics.TranslateTransform(10.0F, 10.0F);

    // Draw the rectangle again.
    e.Graphics.DrawRectangle(Pens.Tomato, rectangle1);

    // Set the page scale and origin back to their original values.
    e.Graphics.PageScale = 1.0F;
    e.Graphics.ResetTransform();

    SolidBrush transparentBrush = new SolidBrush(Color.FromArgb(50,
        Color.Yellow));

    // Create a new rectangle with the coordinates you expect
    // after setting PageScale and calling TranslateTransform:
    // x = (10 + 20) * 2
    // y = (10 + 20) * 2
    // Width = 50 * 2
    // Length = 100 * 2
    Rectangle newRectangle = new Rectangle(60, 60, 100, 200);

    // Fill in the rectangle with a semi-transparent color.
    e.Graphics.FillRectangle(transparentBrush, newRectangle);
}

Private Sub ChangePageScaleAndTranslateTransform(ByVal e As _
    PaintEventArgs)

    ' Create a rectangle.
    Dim rectangle1 As New Rectangle(20, 20, 50, 100)

    ' Draw its outline.
    e.Graphics.DrawRectangle(Pens.SlateBlue, rectangle1)

    ' Change the page scale.  
    e.Graphics.PageScale = 2.0F

    ' Call TranslateTransform to change the origin of the
    '  Graphics object.
    e.Graphics.TranslateTransform(10.0F, 10.0F)

    ' Draw the rectangle again.
    e.Graphics.DrawRectangle(Pens.Tomato, rectangle1)

    ' Set the page scale and origin back to their original values.
    e.Graphics.PageScale = 1.0F
    e.Graphics.ResetTransform()

    Dim transparentBrush As New SolidBrush(Color.FromArgb(50, Color.Yellow))

    ' Create a new rectangle with the coordinates you expect
    ' after setting PageScale and calling TranslateTransform:
    ' x = (10 + 20) * 2
    ' y = (10 + 20) * 2
    ' Width = 50 * 2
    ' Length = 100 * 2
    Dim newRectangle As Rectangle = New Rectangle(60, 60, 100, 200)

    ' Fill in the rectangle with a semi-transparent color.
    e.Graphics.FillRectangle(transparentBrush, newRectangle)
End Sub

Confira também

• Tipos de sistemas de coordenadas