XpsImage Clase

Definición

Espacio de nombres:

System.Windows.Xps.Packaging

Ensamblado:

ReachFramework.dll

Representa una imagen en un XpsDocument.

public ref class XpsImage : System::Windows::Xps::Packaging::XpsResource

public class XpsImage : System.Windows.Xps.Packaging.XpsResource

type XpsImage = class
    inherit XpsResource

Public Class XpsImage
Inherits XpsResource

Herencia

Object

XpsPartBase

XpsResource

XpsImage

Ejemplos

En el ejemplo siguiente se muestra cómo agregar imágenes a .XpsDocument

// -------------------------- AddPageResources ----------------------------
Dictionary<System::String^,List<XpsResource^>^>^ AddPageResources (IXpsFixedPageWriter^ fixedPageWriter)
{
   // Collection of all resources for this page.
   //   Key: "XpsImage", "XpsFont"
   //   Value: List of XpsImage or XpsFont
   Dictionary<System::String^,List<XpsResource^>^>^ resources = gcnew Dictionary<System::String^,List<XpsResource^>^>();

   // Collections of images and fonts used in the current page.
   List<XpsResource^>^ xpsImages = gcnew List<XpsResource^>();
   List<XpsResource^>^ xpsFonts = gcnew List<XpsResource^>();

   try
   {
      XpsImage^ xpsImage;
      XpsFont^ xpsFont;

      // Add, Write, and Commit image1 to the current page.
      xpsImage = fixedPageWriter->AddImage(XpsImageType::JpegImageType);
      WriteToStream(xpsImage->GetStream(), image1);
      xpsImage->Commit();
      xpsImages->Add(xpsImage);    // Add image1 as a required resource.

      // Add, Write, and Commit font 1 to the current page.
      xpsFont = fixedPageWriter->AddFont();
      WriteObfuscatedStream(xpsFont->Uri->ToString(), xpsFont->GetStream(), font1);
      xpsFont->Commit();
      xpsFonts->Add(xpsFont);      // Add font1 as a required resource.

      // Add, Write, and Commit image2 to the current page.
      xpsImage = fixedPageWriter->AddImage(XpsImageType::TiffImageType);
      WriteToStream(xpsImage->GetStream(), image2);
      xpsImage->Commit();
      xpsImages->Add(xpsImage);    // Add image2 as a required resource.

      // Add, Write, and Commit font2 to the current page.
      xpsFont = fixedPageWriter->AddFont(false);
      WriteToStream(xpsFont->GetStream(), font2);
      xpsFont->Commit();
      xpsFonts->Add(xpsFont);      // Add font2 as a required resource.

      // Return the image and font resources in a combined collection.
      resources->Add("XpsImage", xpsImages);
      resources->Add("XpsFont", xpsFonts);
      return resources;
   } catch (XpsPackagingException^ xpsException)
   {
      throw xpsException;

   }
};// end:AddPageResources()

// -------------------------- AddPageResources ----------------------------
private Dictionary<string, List<XpsResource>>
        AddPageResources(IXpsFixedPageWriter fixedPageWriter)
{
    // Collection of all resources for this page.
    //   Key: "XpsImage", "XpsFont"
    //   Value: List of XpsImage or XpsFont
    Dictionary<string, List<XpsResource>> resources =
        new Dictionary<string, List<XpsResource>>();

    // Collections of images and fonts used in the current page.
    List<XpsResource> xpsImages = new List<XpsResource>();
    List<XpsResource> xpsFonts  = new List<XpsResource>();

    try
    {
        XpsImage xpsImage;
        XpsFont  xpsFont;

        // Add, Write, and Commit image1 to the current page.
        xpsImage = fixedPageWriter.AddImage(XpsImageType.JpegImageType);
        WriteToStream(xpsImage.GetStream(), image1);
        xpsImage.Commit();
        xpsImages.Add(xpsImage);    // Add image1 as a required resource.

        // Add, Write, and Commit font 1 to the current page.
        xpsFont = fixedPageWriter.AddFont();
        WriteObfuscatedStream(
            xpsFont.Uri.ToString(), xpsFont.GetStream(), font1);
        xpsFont.Commit();
        xpsFonts.Add(xpsFont);      // Add font1 as a required resource.

        // Add, Write, and Commit image2 to the current page.
        xpsImage = fixedPageWriter.AddImage(XpsImageType.TiffImageType);
        WriteToStream(xpsImage.GetStream(), image2);
        xpsImage.Commit();
        xpsImages.Add(xpsImage);    // Add image2 as a required resource.

        // Add, Write, and Commit font2 to the current page.
        xpsFont = fixedPageWriter.AddFont(false);
        WriteToStream(xpsFont.GetStream(), font2);
        xpsFont.Commit();
        xpsFonts.Add(xpsFont);      // Add font2 as a required resource.

        // Return the image and font resources in a combined collection.
        resources.Add("XpsImage", xpsImages);
        resources.Add("XpsFont", xpsFonts);
        return resources;
    }
    catch (XpsPackagingException xpsException)
    {
        throw xpsException;
    }
}// end:AddPageResources()

' -------------------------- AddPageResources ----------------------------
Private Function AddPageResources(ByVal fixedPageWriter As IXpsFixedPageWriter) As Dictionary(Of String, List(Of XpsResource))
    ' Collection of all resources for this page.
    '   Key: "XpsImage", "XpsFont"
    '   Value: List of XpsImage or XpsFont
    Dim resources As New Dictionary(Of String, List(Of XpsResource))()

    ' Collections of images and fonts used in the current page.
    Dim xpsImages As New List(Of XpsResource)()
    Dim xpsFonts As New List(Of XpsResource)()

    Try
        Dim xpsImage As XpsImage
        Dim xpsFont As XpsFont

        ' Add, Write, and Commit image1 to the current page.
        xpsImage = fixedPageWriter.AddImage(XpsImageType.JpegImageType)
        WriteToStream(xpsImage.GetStream(), image1)
        xpsImage.Commit()
        xpsImages.Add(xpsImage) ' Add image1 as a required resource.

        ' Add, Write, and Commit font 1 to the current page.
        xpsFont = fixedPageWriter.AddFont()
        WriteObfuscatedStream(xpsFont.Uri.ToString(), xpsFont.GetStream(), font1)
        xpsFont.Commit()
        xpsFonts.Add(xpsFont) ' Add font1 as a required resource.

        ' Add, Write, and Commit image2 to the current page.
        xpsImage = fixedPageWriter.AddImage(XpsImageType.TiffImageType)
        WriteToStream(xpsImage.GetStream(), image2)
        xpsImage.Commit()
        xpsImages.Add(xpsImage) ' Add image2 as a required resource.

        ' Add, Write, and Commit font2 to the current page.
        xpsFont = fixedPageWriter.AddFont(False)
        WriteToStream(xpsFont.GetStream(), font2)
        xpsFont.Commit()
        xpsFonts.Add(xpsFont) ' Add font2 as a required resource.

        ' Return the image and font resources in a combined collection.
        resources.Add("XpsImage", xpsImages)
        resources.Add("XpsFont", xpsFonts)
        Return resources
    Catch xpsException As XpsPackagingException
        Throw xpsException
    End Try
End Function ' end:AddPageResources()

Comentarios

La XpsImage clase no tiene ningún constructor público.

Use el AddImage método para agregar una imagen y obtener una referencia a ella en un nuevo documento.

Use el GetImage método para obtener una referencia de imagen en un documento existente.

En función de la configuración de y , como FontSubsetterCommitPolicies y PackageInterleavingOrder, la operación de vaciado del Commit método de la XpsImage clase puede retrasarse hasta que se cierre el proceso completoXpsDocument.XpsPackagingPolicyXpsSerializationManager

Propiedades

Uri	Obtiene o establece el identificador uniforme de recursos (URI) del elemento. (Heredado de XpsPartBase)

Métodos

Commit()	Confirma todos los cambios y vacía el recurso en el paquete del documento. (Heredado de XpsResource)
Equals(Object)	Determina si el objeto especificado es igual que el objeto actual. (Heredado de Object)
GetHashCode()	Sirve como la función hash predeterminada. (Heredado de Object)
GetStream()	Cuando se invalida en una clase derivada, devuelve la secuencia de E/S para leer o escribir el recurso. (Heredado de XpsResource)
GetType()	Obtiene el Type de la instancia actual. (Heredado de Object)
MemberwiseClone()	Crea una copia superficial del Object actual. (Heredado de Object)
RelativeUri(Uri)	Devuelve el URI del recurso relativo a un URI absoluto especificado. (Heredado de XpsResource)
ToString()	Devuelve una cadena que representa el objeto actual. (Heredado de Object)

Implementaciones de interfaz explícitas

IDisposable.Dispose()

Este miembro admite la infraestructura de Windows Presentation Foundation y no está previsto su uso directo desde el código. (Heredado de XpsResource)

Consulte también

• XpsFont
• XML Paper Specification (XPS)