PdfSignatureAppearance (iText 5.5.13.4 API)

java.lang.Object
- com.itextpdf.text.pdf.PdfSignatureAppearance

```
public class PdfSignatureAppearance
extends Object
```
Class that takes care of the cryptographic options and appearances that form a signature.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`PdfSignatureAppearance.RenderingMode` Signature rendering modes
`static interface`	`PdfSignatureAppearance.SignatureEvent` An interface to retrieve the signature dictionary for modification.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`CERTIFIED_FORM_FILLING` Author signature, form filling allowed
`static int`	`CERTIFIED_FORM_FILLING_AND_ANNOTATIONS` Author signature, form filling and annotations allowed
`static int`	`CERTIFIED_NO_CHANGES_ALLOWED` Author signature, no changes allowed
`static int`	`NOT_CERTIFIED` Approval signature
`static String`	`questionMark` An appearance that can be used for layer 1 (if acro6Layers is false).

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`void`	`addDeveloperExtension(PdfDeveloperExtension de)` Adds the appropriate developer extension.
`void`	`close(PdfDictionary update)` This is the last method to be called when using external signatures.
`PdfTemplate`	`getAppearance()` Gets the main appearance layer.
`Certificate`	`getCertificate()`
`int`	`getCertificationLevel()` Gets the certified status of this document.
`String`	`getContact()` Gets the signing contact.
`PdfDictionary`	`getCryptoDictionary()` Gets the user made signature dictionary.
`PdfSigLockDictionary`	`getFieldLockDict()` Getter for the field lock dictionary.
`String`	`getFieldName()` Gets the field name.
`Image`	`getImage()` Gets the background image for the layer 2.
`float`	`getImageScale()` Gets the scaling to be applied to the background image.
`PdfTemplate`	`getLayer(int layer)` Gets a template layer to create a signature appearance.
`Font`	`getLayer2Font()` Gets the n2 and n4 layer font.
`String`	`getLayer2Text()` Gets the signature text identifying the signer if set by setLayer2Text().
`String`	`getLayer4Text()` Gets the text identifying the signature status if set by setLayer4Text().
`String`	`getLocation()` Gets the signing location.
`String`	`getNewSigName()` Gets a new signature field name that doesn't clash with any existing name.
`int`	`getPage()` Gets the page number of the field.
`Rectangle`	`getPageRect()` Gets the rectangle that represent the position and dimension of the signature in the page.
`InputStream`	`getRangeStream()` Gets the document bytes that are hashable when using external signatures.
`String`	`getReason()` Gets the signing reason.
`Rectangle`	`getRect()` Gets the rectangle representing the signature dimensions.
`PdfSignatureAppearance.RenderingMode`	`getRenderingMode()` Gets the rendering mode for this signature.
`int`	`getRunDirection()` Gets the run direction.
`String`	`getSignatureCreator()` Gets the signature creator.
`PdfSignatureAppearance.SignatureEvent`	`getSignatureEvent()` Getter for property signatureEvent.
`Image`	`getSignatureGraphic()` Gets the Image object to render.
`Calendar`	`getSignDate()` Gets the signature date.
`PdfStamper`	`getStamper()` Gets the `PdfStamper` associated with this instance.
`File`	`getTempFile()` Gets the temporary file.
`PdfTemplate`	`getTopLayer()` Gets the template that aggregates all appearance layers.
`boolean`	`isAcro6Layers()` Gets the Acrobat 6.0 layer mode.
`boolean`	`isInvisible()` Gets the visibility status of the signature.
`boolean`	`isPreClosed()` Checks if the document is in the process of closing.
`void`	`preClose(HashMap<PdfName,Integer> exclusionSizes)` This is the first method to be called when using external signatures.
`void`	`setAcro6Layers(boolean acro6Layers)` Deprecated. Adobe no longer supports Adobe Acrobat / Reader versions older than 9
`void`	`setCertificate(Certificate signCertificate)` Sets the certificate used to provide the text in the appearance.
`void`	`setCertificationLevel(int certificationLevel)` Sets the document type to certified instead of simply signed.
`void`	`setContact(String contact)` Sets the signing contact.
`void`	`setCryptoDictionary(PdfDictionary cryptoDictionary)` Sets a user made signature dictionary.
`void`	`setFieldLockDict(PdfSigLockDictionary fieldLock)` Setter for the field lock dictionary.
`void`	`setImage(Image image)` Sets the background image for the layer 2.
`void`	`setImageScale(float imageScale)` Sets the scaling to be applied to the background image.
`void`	`setLayer2Font(Font layer2Font)` Sets the n2 and n4 layer font.
`void`	`setLayer2Text(String text)` Sets the signature text identifying the signer.
`void`	`setLayer4Text(String text)` Sets the text identifying the signature status.
`void`	`setLocation(String location)` Sets the signing location.
`void`	`setLocationCaption(String locationCaption)` Sets the caption for the signing location.
`void`	`setReason(String reason)` Sets the signing reason.
`void`	`setReasonCaption(String reasonCaption)` Sets the caption for signing reason.
`void`	`setRenderingMode(PdfSignatureAppearance.RenderingMode renderingMode)` Sets the rendering mode for this signature.
`void`	`setReuseAppearance(boolean reuseAppearance)` Indicates that the existing appearances needs to be reused as layer 0.
`void`	`setRunDirection(int runDirection)` Sets the run direction in the n2 and n4 layer.
`void`	`setSignatureCreator(String signatureCreator)` Sets the name of the application used to create the signature.
`void`	`setSignatureEvent(PdfSignatureAppearance.SignatureEvent signatureEvent)` Sets the signature event to allow modification of the signature dictionary.
`void`	`setSignatureGraphic(Image signatureGraphic)` Sets the Image object to render when Render is set to `RenderingMode.GRAPHIC` or `RenderingMode.GRAPHIC_AND_DESCRIPTION`.
`void`	`setSignDate(Calendar signDate)` Sets the signature date.
`void`	`setVisibleSignature(Rectangle pageRect, int page, String fieldName)` Sets the signature to be visible.
`void`	`setVisibleSignature(String fieldName)` Sets the signature to be visible.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - NOT_CERTIFIED
```
public static final int NOT_CERTIFIED
```
    Approval signature
    
    See Also:
    
    Constant Field Values
  - CERTIFIED_NO_CHANGES_ALLOWED
```
public static final int CERTIFIED_NO_CHANGES_ALLOWED
```
    Author signature, no changes allowed
    
    See Also:
    
    Constant Field Values
  - CERTIFIED_FORM_FILLING
```
public static final int CERTIFIED_FORM_FILLING
```
    Author signature, form filling allowed
    
    See Also:
    
    Constant Field Values
  - CERTIFIED_FORM_FILLING_AND_ANNOTATIONS
```
public static final int CERTIFIED_FORM_FILLING_AND_ANNOTATIONS
```
    Author signature, form filling and annotations allowed
    
    See Also:
    
    Constant Field Values
  - questionMark
```
public static final String questionMark
```
    An appearance that can be used for layer 1 (if acro6Layers is false).
    
    See Also:
    
    Constant Field Values
- Method Detail
  - setCertificationLevel
```
public void setCertificationLevel(int certificationLevel)
```
    Sets the document type to certified instead of simply signed.
    
    Parameters:
    
    certificationLevel - the values can be: NOT_CERTIFIED, CERTIFIED_NO_CHANGES_ALLOWED, CERTIFIED_FORM_FILLING and CERTIFIED_FORM_FILLING_AND_ANNOTATIONS
  - getCertificationLevel
```
public int getCertificationLevel()
```
    Gets the certified status of this document.
    
    Returns:
    
    the certified status
  - getReason
```
public String getReason()
```
    Gets the signing reason.
    
    Returns:
    
    the signing reason
  - setReason
```
public void setReason(String reason)
```
    Sets the signing reason.
    
    Parameters:
    
    reason - the signing reason
  - setReasonCaption
```
public void setReasonCaption(String reasonCaption)
```
    Sets the caption for signing reason.
    
    Parameters:
    
    reasonCaption - the signing reason caption
  - getLocation
```
public String getLocation()
```
    Gets the signing location.
    
    Returns:
    
    the signing location
  - setLocation
```
public void setLocation(String location)
```
    Sets the signing location.
    
    Parameters:
    
    location - the signing location
  - setLocationCaption
```
public void setLocationCaption(String locationCaption)
```
    Sets the caption for the signing location.
    
    Parameters:
    
    locationCaption - the signing location caption
  - getSignatureCreator
```
public String getSignatureCreator()
```
    Gets the signature creator.
    
    Returns:
    
    the signature creator
  - setSignatureCreator
```
public void setSignatureCreator(String signatureCreator)
```
    Sets the name of the application used to create the signature.
    
    Parameters:
    
    signatureCreator - the name of the signature creating application
  - getContact
```
public String getContact()
```
    Gets the signing contact.
    
    Returns:
    
    the signing contact
  - setContact
```
public void setContact(String contact)
```
    Sets the signing contact.
    
    Parameters:
    
    contact - the signing contact
  - getSignDate
```
public Calendar getSignDate()
```
    Gets the signature date.
    
    Returns:
    
    the signature date
  - setSignDate
```
public void setSignDate(Calendar signDate)
```
    Sets the signature date.
    
    Parameters:
    
    signDate - the signature date
  - getRangeStream
```
public InputStream getRangeStream()
                           throws IOException
```
    Gets the document bytes that are hashable when using external signatures. The general sequence is: preClose(), getRangeStream() and close().
    
    Returns:
    
    the document bytes that are hashable
    
    Throws:
    
    IOException
  - addDeveloperExtension
```
public void addDeveloperExtension(PdfDeveloperExtension de)
```
    Adds the appropriate developer extension.
  - getCryptoDictionary
```
public PdfDictionary getCryptoDictionary()
```
    Gets the user made signature dictionary. This is the dictionary at the /V key.
    
    Returns:
    
    the user made signature dictionary
  - setCryptoDictionary
```
public void setCryptoDictionary(PdfDictionary cryptoDictionary)
```
    Sets a user made signature dictionary. This is the dictionary at the /V key.
    
    Parameters:
    
    cryptoDictionary - a user made signature dictionary
  - setCertificate
```
public void setCertificate(Certificate signCertificate)
```
    Sets the certificate used to provide the text in the appearance. This certificate doesn't take part in the actual signing process.
    
    Parameters:
    
    signCertificate - the certificate
  - getCertificate
```
public Certificate getCertificate()
```
  - getSignatureEvent
```
public PdfSignatureAppearance.SignatureEvent getSignatureEvent()
```
    Getter for property signatureEvent.
    
    Returns:
    
    Value of property signatureEvent.
  - setSignatureEvent
```
public void setSignatureEvent(PdfSignatureAppearance.SignatureEvent signatureEvent)
```
    Sets the signature event to allow modification of the signature dictionary.
    
    Parameters:
    
    signatureEvent - the signature event
  - getFieldName
```
public String getFieldName()
```
    Gets the field name.
    
    Returns:
    
    the field name
  - getNewSigName
```
public String getNewSigName()
```
    Gets a new signature field name that doesn't clash with any existing name.
    
    Returns:
    
    a new signature field name
  - getPage
```
public int getPage()
```
    Gets the page number of the field.
    
    Returns:
    
    the page number of the field
  - getRect
```
public Rectangle getRect()
```
    Gets the rectangle representing the signature dimensions.
    
    Returns:
    
    the rectangle representing the signature dimensions. It may be null or have zero width or height for invisible signatures
  - getPageRect
```
public Rectangle getPageRect()
```
    Gets the rectangle that represent the position and dimension of the signature in the page.
    
    Returns:
    
    the rectangle that represent the position and dimension of the signature in the page
  - isInvisible
```
public boolean isInvisible()
```
    Gets the visibility status of the signature.
    
    Returns:
    
    the visibility status of the signature
  - setVisibleSignature
```
public void setVisibleSignature(Rectangle pageRect,
                                int page,
                                String fieldName)
```
    Sets the signature to be visible. It creates a new visible signature field.
    
    Parameters:
    
    pageRect - the position and dimension of the field in the page
    
    page - the page to place the field. The fist page is 1
    
    fieldName - the field name or null to generate automatically a new field name
  - setVisibleSignature
```
public void setVisibleSignature(String fieldName)
```
    Sets the signature to be visible. An empty signature field with the same name must already exist.
    
    Parameters:
    
    fieldName - the existing empty signature field name
  - getRenderingMode
```
public PdfSignatureAppearance.RenderingMode getRenderingMode()
```
    Gets the rendering mode for this signature.
    
    Returns:
    
    the rendering mode for this signature
    
    Since:
    
    5.0.1
  - setRenderingMode
```
public void setRenderingMode(PdfSignatureAppearance.RenderingMode renderingMode)
```
    Sets the rendering mode for this signature.
    
    Parameters:
    
    renderingMode - the rendering mode
    
    Since:
    
    5.0.1
  - getSignatureGraphic
```
public Image getSignatureGraphic()
```
    Gets the Image object to render.
    
    Returns:
    
    the image
  - setSignatureGraphic
```
public void setSignatureGraphic(Image signatureGraphic)
```
    Sets the Image object to render when Render is set to RenderingMode.GRAPHIC or RenderingMode.GRAPHIC_AND_DESCRIPTION.
    
    Parameters:
    
    signatureGraphic - image rendered. If null the mode is defaulted to RenderingMode.DESCRIPTION
  - isAcro6Layers
```
public boolean isAcro6Layers()
```
    Gets the Acrobat 6.0 layer mode.
    
    Returns:
    
    the Acrobat 6.0 layer mode
  - setAcro6Layers
```
public void setAcro6Layers(boolean acro6Layers)
```
    Deprecated. Adobe no longer supports Adobe Acrobat / Reader versions older than 9
    
    Acrobat 6.0 and higher recommends that only layer n0 and n2 be present. Use this method with value false if you want to ignore this recommendation.
    
    Parameters:
    
    acro6Layers - if true only the layers n0 and n2 will be present
  - getLayer
```
public PdfTemplate getLayer(int layer)
```
    Gets a template layer to create a signature appearance. The layers can go from 0 to 4, but only layer 0 and 2 will be used if acro6Layers is true.
    Consult PPKAppearances.pdf for further details.
    
    Parameters:
    
    layer - the layer
    
    Returns:
    
    a template
  - setReuseAppearance
```
public void setReuseAppearance(boolean reuseAppearance)
```
    Indicates that the existing appearances needs to be reused as layer 0.
  - getImage
```
public Image getImage()
```
    Gets the background image for the layer 2.
    
    Returns:
    
    the background image for the layer 2
  - setImage
```
public void setImage(Image image)
```
    Sets the background image for the layer 2.
    
    Parameters:
    
    image - the background image for the layer 2
  - getImageScale
```
public float getImageScale()
```
    Gets the scaling to be applied to the background image.
    
    Returns:
    
    the scaling to be applied to the background image
  - setImageScale
```
public void setImageScale(float imageScale)
```
    Sets the scaling to be applied to the background image. If it's zero the image will fully fill the rectangle. If it's less than zero the image will fill the rectangle but will keep the proportions. If it's greater than zero that scaling will be applied. In any of the cases the image will always be centered. It's zero by default.
    
    Parameters:
    
    imageScale - the scaling to be applied to the background image
  - setLayer2Text
```
public void setLayer2Text(String text)
```
    Sets the signature text identifying the signer.
    
    Parameters:
    
    text - the signature text identifying the signer. If null or not set a standard description will be used
  - getLayer2Text
```
public String getLayer2Text()
```
    Gets the signature text identifying the signer if set by setLayer2Text().
    
    Returns:
    
    the signature text identifying the signer
  - getLayer2Font
```
public Font getLayer2Font()
```
    Gets the n2 and n4 layer font.
    
    Returns:
    
    the n2 and n4 layer font
  - setLayer2Font
```
public void setLayer2Font(Font layer2Font)
```
    Sets the n2 and n4 layer font. If the font size is zero, auto-fit will be used.
    
    Parameters:
    
    layer2Font - the n2 and n4 font
  - setRunDirection
```
public void setRunDirection(int runDirection)
```
    Sets the run direction in the n2 and n4 layer.
    
    Parameters:
    
    runDirection - the run direction
  - getRunDirection
```
public int getRunDirection()
```
    Gets the run direction.
    
    Returns:
    
    the run direction
  - setLayer4Text
```
public void setLayer4Text(String text)
```
    Sets the text identifying the signature status. Will be ignored if acro6Layers is true.
    
    Parameters:
    
    text - the text identifying the signature status. If null or not set the description "Signature Not Verified" will be used
  - getLayer4Text
```
public String getLayer4Text()
```
    Gets the text identifying the signature status if set by setLayer4Text().
    
    Returns:
    
    the text identifying the signature status
  - getTopLayer
```
public PdfTemplate getTopLayer()
```
    Gets the template that aggregates all appearance layers. This corresponds to the /FRM resource.
    Consult PPKAppearances.pdf for further details.
    
    Returns:
    
    the template that aggregates all appearance layers
  - getAppearance
```
public PdfTemplate getAppearance()
                          throws DocumentException
```
    Gets the main appearance layer.
    Consult PPKAppearances.pdf for further details.
    
    Returns:
    
    the main appearance layer
    
    Throws:
    
    DocumentException - on error
  - getStamper
```
public PdfStamper getStamper()
```
    Gets the PdfStamper associated with this instance.
    
    Returns:
    
    the PdfStamper associated with this instance
  - getTempFile
```
public File getTempFile()
```
    Gets the temporary file.
    
    Returns:
    
    the temporary file or null is the document is created in memory
  - getFieldLockDict
```
public PdfSigLockDictionary getFieldLockDict()
```
    Getter for the field lock dictionary.
    
    Returns:
    
    Field lock dictionary.
  - setFieldLockDict
```
public void setFieldLockDict(PdfSigLockDictionary fieldLock)
```
    Setter for the field lock dictionary.
    Be aware: if a signature is created on an existing signature field, then its /Lock dictionary takes the precedence (if it exists).
    
    Parameters:
    
    fieldLock - Field lock dictionary.
  - isPreClosed
```
public boolean isPreClosed()
```
    Checks if the document is in the process of closing.
    
    Returns:
    
    true if the document is in the process of closing, false otherwise
  - preClose
```
public void preClose(HashMap<PdfName,Integer> exclusionSizes)
              throws IOException,
                     DocumentException
```
    This is the first method to be called when using external signatures. The general sequence is: preClose(), getDocumentBytes() and close().
    If calling preClose() dont't call PdfStamper.close().
    
    exclusionSizes must contain at least the PdfName.CONTENTS key with the size that it will take in the document. Note that due to the hex string coding this size should be byte_size*2+2.
    
    Parameters:
    
    exclusionSizes - a HashMap with names and sizes to be excluded in the signature calculation. The key is a PdfName and the value an Integer. At least the PdfName.CONTENTS must be present
    
    Throws:
    
    IOException - on error
    
    DocumentException - on error
  - close
```
public void close(PdfDictionary update)
           throws IOException,
                  DocumentException
```
    This is the last method to be called when using external signatures. The general sequence is: preClose(), getDocumentBytes() and close().
    update is a PdfDictionary that must have exactly the same keys as the ones provided in preClose(HashMap).
    
    Parameters:
    
    update - a PdfDictionary with the key/value that will fill the holes defined in preClose(HashMap)
    
    Throws:
    
    DocumentException - on error
    
    IOException - on error

Class PdfSignatureAppearance

Nested Class Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NOT_CERTIFIED

CERTIFIED_NO_CHANGES_ALLOWED

CERTIFIED_FORM_FILLING

CERTIFIED_FORM_FILLING_AND_ANNOTATIONS

questionMark

Method Detail

setCertificationLevel

getCertificationLevel

getReason

setReason

setReasonCaption

getLocation

setLocation

setLocationCaption

getSignatureCreator

setSignatureCreator

getContact

setContact

getSignDate

setSignDate

getRangeStream

addDeveloperExtension

getCryptoDictionary

setCryptoDictionary

setCertificate

getCertificate

getSignatureEvent

setSignatureEvent

getFieldName

getNewSigName

getPage

getRect

getPageRect

isInvisible

setVisibleSignature

setVisibleSignature

getRenderingMode

setRenderingMode

getSignatureGraphic

setSignatureGraphic

isAcro6Layers

setAcro6Layers

getLayer

setReuseAppearance

getImage

setImage

getImageScale

setImageScale

setLayer2Text

getLayer2Text

getLayer2Font

setLayer2Font

setRunDirection

getRunDirection

setLayer4Text

getLayer4Text

getTopLayer

getAppearance

getStamper

getTempFile

getFieldLockDict

setFieldLockDict

isPreClosed

preClose

close