Package com.itextpdf.layout.renderer

Class LineRenderer

java.lang.Object

com.itextpdf.layout.renderer.AbstractRenderer

com.itextpdf.layout.renderer.LineRenderer

All Implemented Interfaces:

IPropertyContainer, IRenderer

       public class LineRenderer extends AbstractRenderer
      

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LineRenderer.RendererGlyph

Field Summary

Fields

Modifier and Type	Field	Description
protected byte[]	levels
protected float	maxAscent
protected float	maxDescent

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

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

Constructor Summary

Constructors

Constructor	Description
LineRenderer()

Method Summary

Modifier and Type	Method	Description
protected LineRenderer	adjustChildrenYLine()
protected void	applyLeading(float deltaY)
protected int	baseCharactersCount()	Returns the number of base characters, i.e.
boolean	containsImage()
protected LineRenderer	createOverflowRenderer()
protected LineRenderer	createSplitRenderer()
protected Float	getFirstYLineRecursively()	Gets the first yLine of the nested children recursively.
protected Float	getLastYLineRecursively()
float	getLeadingValue(Leading leading)
float	getMaxAscent()
float	getMaxDescent()
MinMaxWidth	getMinMaxWidth()	Calculates min and max width values for current renderer.
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 int	getNumberOfSpaces()
float	getYLine()
void	justify(float width)
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.
protected int	length()	Gets the total lengths of characters in this line.
protected LineRenderer[]	split()
String	toString()	Returns a string representation of the renderer.
protected LineRenderer	trimLast()

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, draw, drawBackground, drawBorder, drawChildren, endElementOpacityApplying, endTransformationIfApplied, getBackgroundArea, getBorderAreaBBox, getBorderRadii, getBorders, getChildRenderers, getDefaultProperty, getInnerAreaBBox, getMargins, getModelElement, getOccupiedArea, getOccupiedAreaBBox, 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, transformPoints, updateHeight, updateHeightsOnSplit, updateMaxHeight, updateMinHeight, updateWidth

Methods inherited from class java.lang.Object

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

Field Details

maxAscent

             protected float maxAscent
            

maxDescent

             protected float maxDescent
            

levels

             protected byte[] levels
            

Constructor Details

LineRenderer

             public LineRenderer()
            

Method Details

layout

             public LayoutResult layout
             (LayoutContext layoutContext)
            

Description copied from interface: IRenderer

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.

Parameters:

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

Returns:

result of the layout process

getMaxAscent

             public float getMaxAscent()
            

getMaxDescent

             public float getMaxDescent()
            

getYLine

             public float getYLine()
            

getLeadingValue

             public float getLeadingValue
             (Leading leading)
            

getNextRenderer

             public IRenderer getNextRenderer()
            

Description copied from interface: IRenderer

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

getFirstYLineRecursively

             protected Float getFirstYLineRecursively()
            

Description copied from class: AbstractRenderer

Gets the first yLine of the nested children recursively. E.g. for a list, this will be the yLine of the first item (if the first item is indeed a paragraph). NOTE: this method will no go further than the first child.

Overrides:

getFirstYLineRecursively in class AbstractRenderer

Returns:

the first yline of the nested children, null if there is no text found

getLastYLineRecursively

             protected Float getLastYLineRecursively()
            

Overrides:

getLastYLineRecursively in class AbstractRenderer

justify

             public void justify
             (float width)
            

getNumberOfSpaces

             protected int getNumberOfSpaces()
            

length

             protected int length()
            

Gets the total lengths of characters in this line. Other elements (images, tables) are not taken into account.

Returns:

the total lengths of characters in this line.

baseCharactersCount

             protected int baseCharactersCount()
            

Returns the number of base characters, i.e. non-mark characters

Returns:

the number of base non-mark characters

toString

             public String toString()
            

Description copied from class: AbstractRenderer

Returns a string representation of the renderer.

Overrides:

toString in class AbstractRenderer

Returns:

a String

See Also:

• Object.toString()

createSplitRenderer

             protected LineRenderer createSplitRenderer()
            

createOverflowRenderer

             protected LineRenderer createOverflowRenderer()
            

split

             protected LineRenderer[] split()
            

adjustChildrenYLine

             protected LineRenderer adjustChildrenYLine()
            

applyLeading

             protected void applyLeading
             (float deltaY)
            

trimLast

             protected LineRenderer trimLast()
            

containsImage

             public boolean containsImage()
            

getMinMaxWidth

             public MinMaxWidth getMinMaxWidth()
            

Description copied from class: AbstractRenderer

Calculates min and max width values for current renderer.

Overrides:

getMinMaxWidth in class AbstractRenderer

Returns:

instance of MinMaxWidth