Package com.itextpdf.forms.form.renderer

Class SignatureAppearanceRenderer

java.lang.Object

com.itextpdf.layout.renderer.AbstractRenderer

com.itextpdf.layout.renderer.BlockRenderer

com.itextpdf.forms.form.renderer.AbstractFormFieldRenderer

com.itextpdf.forms.form.renderer.AbstractTextFieldRenderer

com.itextpdf.forms.form.renderer.SignatureAppearanceRenderer

All Implemented Interfaces:

IPropertyContainer, IRenderer

       public class SignatureAppearanceRenderer extends AbstractTextFieldRenderer
      

The AbstractTextFieldRenderer implementation for SigFields.

Field Summary

Fields inherited from class com.itextpdf.forms.form.renderer.AbstractTextFieldRenderer

font

Fields inherited from class com.itextpdf.forms.form.renderer.AbstractFormFieldRenderer

flatRenderer

Fields inherited from class com.itextpdf.layout.renderer.AbstractRenderer

childRenderers, flushed, INF, isLastRendererForModelElement, modelElement, occupiedArea, OVERLAP_EPSILON, parent, positionedRenderers, properties

Constructor Summary

Constructors

Constructor	Description
SignatureAppearanceRenderer(SignatureFieldAppearance modelElement)	Creates a new SignatureAppearanceRenderer instance.

Method Summary

Modifier and Type	Method	Description
protected void	adjustFieldLayout(LayoutContext layoutContext)	Adjusts the field layout.
protected void	applyAcroField(DrawContext drawContext)	Applies the AcroField widget.
protected IRenderer	createFlatRenderer()	Creates the flat renderer instance.
String	getDefaultValue()	Gets the default value of the form field.
IRenderer	getNextRenderer()	Gets a new instance of this class to be used as a next renderer, after this renderer is used, if IRenderer.layout(LayoutContext) is called more than once.
protected boolean	isLayoutBasedOnFlatRenderer()	Determines, whether the layout is based in the renderer itself or flat renderer.
LayoutResult	layout(LayoutContext layoutContext)	This method simulates positioning of the renderer, including all of its children, and returns the LayoutResult, representing the layout result, including occupied area, status, i.e.

Methods inherited from class com.itextpdf.forms.form.renderer.AbstractFormFieldRenderer

applyAccessibilityProperties, draw, drawChildren, getConformance, getLang, getMinMaxWidth, getModelId, isFlatten, isRendererFit, writeAcroFormFieldLangAttribute

Methods inherited from class com.itextpdf.layout.renderer.BlockRenderer

applyRotationLayout, applyVerticalAlignment, beginRotationIfApplied, createOverflowRenderer, createRotationTransformInsideOccupiedArea, createSplitRenderer, endRotationIfApplied, getOccupiedAreaBBox, getResolvedFont

Methods inherited from class com.itextpdf.layout.renderer.AbstractRenderer

addAllProperties, addChild, alignChildHorizontally, allowLastYLineRecursiveExtraction, applyAbsolutePosition, applyAction, applyBorderBox, applyBorderBox, applyDestination, applyDestinationsAndAnnotation, applyLinkAnnotation, applyMargins, applyMargins, applyPaddings, applyPaddings, applyRelativePositioningTranslation, beginElementOpacityApplying, beginTransformationIfApplied, calculateAbsolutePdfBBox, calculateBBox, calculateShiftToPositionBBoxOfPointsAt, clipBackgroundArea, clipBackgroundArea, clipBorderArea, createXObject, deleteOwnProperty, deleteProperty, drawBackground, drawBorder, endElementOpacityApplying, endTransformationIfApplied, getBackgroundArea, getBorderAreaBBox, getBorderRadii, getBorders, getChildRenderers, getDefaultProperty, getFirstYLineRecursively, getInnerAreaBBox, getLastYLineRecursively, getMargins, getModelElement, getOccupiedArea, getOwnProperties, getOwnProperty, getPaddings, getParent, getProperty, getProperty, getPropertyAsBoolean, getPropertyAsColor, getPropertyAsFloat, getPropertyAsFloat, getPropertyAsFont, getPropertyAsInteger, getPropertyAsTransparentColor, getPropertyAsUnitValue, hasAbsoluteUnitValue, hasOwnOrModelProperty, hasOwnProperty, hasProperty, hasRelativeUnitValue, initElementAreas, isAbsolutePosition, isBorderBoxSizing, isFirstOnRootArea, isFixedLayout, isFlushed, isKeepTogether, isNotFittingHeight, isNotFittingLayoutArea, isNotFittingWidth, isOverflowFit, isOverflowProperty, isOverflowProperty, isOverflowProperty, isPositioned, isRelativePosition, isStaticLayout, move, rectangleToPointsList, retrieveHeight, retrieveMaxHeight, retrieveMaxWidth, retrieveMinHeight, retrieveMinWidth, retrieveUnitValue, retrieveUnitValue, retrieveWidth, setBorders, setMinMaxWidthBasedOnFixedWidth, setParent, setProperty, toString, transformPoints, updateHeight, updateHeightsOnSplit, updateMaxHeight, updateMinHeight, updateWidth

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

SignatureAppearanceRenderer

             public SignatureAppearanceRenderer
             (SignatureFieldAppearance modelElement)
            

Creates a new SignatureAppearanceRenderer instance.

Parameters:

modelElement - the model element

Method Details

isLayoutBasedOnFlatRenderer

             protected boolean isLayoutBasedOnFlatRenderer()
            

Determines, whether the layout is based in the renderer itself or flat renderer.

Overrides:

isLayoutBasedOnFlatRenderer in class AbstractFormFieldRenderer

Returns:

true if layout is based on flat renderer, false otherwise.

createFlatRenderer

             protected IRenderer createFlatRenderer()
            

Creates the flat renderer instance.

Specified by:

createFlatRenderer in class AbstractFormFieldRenderer

Returns:

the renderer instance.

layout

             public LayoutResult layout
             (LayoutContext layoutContext)
            

This method simulates positioning of the renderer, including all of its children, and returns the LayoutResult, representing the layout result, including occupied area, status, i.e. if there was enough place to fit the renderer subtree, etc. LayoutResult can be extended to return custom layout results for custom elements, e.g. TextRenderer uses TextLayoutResult as its result. This method can be called standalone to learn how much area the renderer subtree needs, or can be called before IRenderer.draw(DrawContext), to prepare the renderer to be flushed to the output stream.

Specified by:

layout in interface IRenderer

Overrides:

layout in class AbstractFormFieldRenderer

Parameters:

layoutContext - the description of layout area and any other additional information

Returns:

result of the layout process

adjustFieldLayout

             protected void adjustFieldLayout
             (LayoutContext layoutContext)
            

Adjusts the field layout.

Specified by:

adjustFieldLayout in class AbstractFormFieldRenderer

Parameters:

layoutContext - layout context

getNextRenderer

             public IRenderer getNextRenderer()
            

Gets a new instance of this class to be used as a next renderer, after this renderer is used, if IRenderer.layout(LayoutContext) is called more than once.

Returns:

new renderer instance

getDefaultValue

             public String getDefaultValue()
            

Gets the default value of the form field.

Overrides:

getDefaultValue in class AbstractFormFieldRenderer

Returns:

the default value of the form field.

applyAcroField

             protected void applyAcroField
             (DrawContext drawContext)
            

Applies the AcroField widget.

Specified by:

applyAcroField in class AbstractFormFieldRenderer

Parameters:

drawContext - the draw context