PdfImageContent Class

Namespace:
GemBox.Pdf.Content
Assembly:
GemBox.Pdf.dll

Represents a PDF content that is a rectangular array of sample values, each representing a color.

public sealed class PdfImageContent : PdfVisualContentElement
Public NotInheritable Class PdfImageContent
    Inherits PdfVisualContentElement
Inheritance:
System.Object
PdfImageContent

Properties

Bounds

Gets the bounds of the PdfImageContent.

public override PdfQuad Bounds { get; }
Public Overrides ReadOnly Property Bounds As PdfQuad
Property Value
PdfQuad

The bounds of the PdfImageContent.

Overrides
Remarks

This member, although exposed as a property for easier debugging, performs complex calculations, so instead of accessing it frequently, cache its result instead.

ElementType

Gets the Image value.

public override PdfContentElementType ElementType { get; }
Public Overrides ReadOnly Property ElementType As PdfContentElementType
Property Value
PdfContentElementType

The Image value.

Overrides

Image

Gets or sets the image.

If IsInline is true, the Image is made read-only. This is required to correctly detect content changes.

If IsInline is true, use Clone() method on the Image to get PdfImage that you want to edit and set the edited clone back to the Image property.

public PdfImage Image { get; set; }
Public Property Image As PdfImage
Property Value
PdfImage

The image.

Remarks

If PdfImage value that is being set is associated with another PdfDocument, this property setter will automatically clone it and associate the clone with the current PdfDocument.

Exceptions
System.ArgumentNullException

Value is null.

System.ArgumentException

The specified image cannot be used as an inline image because either its stream dictionary has indirect descendants or it has stream filters that are not supported in inline images (JPXDecode or JBIG2Decode).

IsInline

Gets or sets a value indicating whether the image content is inlined in the content stream.

If IsInline is true, the Image is made read-only. This is required to correctly detect content changes.

public bool IsInline { get; set; }
Public Property IsInline As Boolean
Property Value
System.Boolean

true if this image content is inlined in the content stream; otherwise, false.

Exceptions
System.ArgumentException

Value is true and Image stream dictionary has indirect descendants or has stream filters that are not supported in inline images (JPXDecode or JBIG2Decode).

Methods

Save(Stream, ImageSaveOptions)

Saves the image content in the specified stream.

public void Save(Stream stream, ImageSaveOptions options)
Public Sub Save(stream As Stream, options As ImageSaveOptions)
Parameters
stream
System.IO.Stream

The stream in which to save the image content.

options
ImageSaveOptions

The saving options which can be used to define settings for save operation.

Save(String)

Saves the image content to a file with the specified path. Path must include file extension.

public void Save(string path)
Public Sub Save(path As String)
Parameters
path
System.String

The path to which to save the image content.

Remarks

File extension that is extracted from the path is used to create the appropriate ImageSaveOptions class instance that is then passed to the Save(String, ImageSaveOptions) method.

Following file extensions are supported:

  • Portable Network Graphics: .png
  • Joint Photographic Experts Group: .jpeg, .jpg
  • Bitmap: .bmp
  • Tagged Image File Format: .tiff, .tif
Exceptions
System.ArgumentException

If file extension is not specified or not supported. If file extension is not recognized, use Save(String, ImageSaveOptions) method overload instead.

Save(String, ImageSaveOptions)

Saves the image content to a file with the specified path.

public void Save(string path, ImageSaveOptions options)
Public Sub Save(path As String, options As ImageSaveOptions)
Parameters
path
System.String

The path to which to save the image content.

options
ImageSaveOptions

The saving options which can be used to define settings for save operation.

Inherited Properties

Collection

Gets the PdfContentElementCollection that the PdfContentElement belongs to.

(Inherited from PdfContentElement)

Format

Gets or sets the formatting properties applied to the PdfVisualContentElement.

(Inherited from PdfVisualContentElement)

Next

Gets the next PdfContentElement in the Collection.

(Inherited from PdfContentElement)

Previous

Gets the previous PdfContentElement in the Collection.

(Inherited from PdfContentElement)

Transform

Gets or sets the transformation from the new (transformed) coordinate system to the original (untransformed) coordinate system.

All coordinates used after the transformation are expressed in the transformed coordinate system.

tip

Before setting the Transform, move PdfVisualContentElement into its own PdfContentGroup so that the transformation is confined to that PdfContentGroup and doesn't have any effect on PdfContentElements outside that PdfContentGroup.

(Inherited from PdfVisualContentElement)

Examples

See Also