Package com.itextpdf.svg.renderers.impl

Class PolylineSvgNodeRenderer

java.lang.Object

com.itextpdf.svg.renderers.impl.AbstractSvgNodeRenderer

com.itextpdf.svg.renderers.impl.PolylineSvgNodeRenderer

All Implemented Interfaces:

IMarkerCapable, ISvgNodeRenderer

Direct Known Subclasses:

PolygonSvgNodeRenderer

public class PolylineSvgNodeRenderer
extends AbstractSvgNodeRenderer
implements IMarkerCapable

ISvgNodeRenderer implementation for the <polyline> tag.

Nested Class Summary

Nested classes/interfaces inherited from class com.itextpdf.svg.renderers.impl.AbstractSvgNodeRenderer

AbstractSvgNodeRenderer.FillProperties, AbstractSvgNodeRenderer.StrokeProperties

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.List<Point>	points	A List of Point objects representing the path to be drawn by the polyline tag.
private Vector	previousOrientationVector	Orientation vector which is used for marker angle calculation.

Fields inherited from class com.itextpdf.svg.renderers.impl.AbstractSvgNodeRenderer

attributesAndStyles, doFill, doStroke

Constructor Summary

Constructors

Constructor	Description
PolylineSvgNodeRenderer()

Method Summary

Modifier and Type	Method	Description
ISvgNodeRenderer	createDeepCopy()	Creates a deep copy of this renderer, including it's subtree of children
protected void	doDraw(SvgDrawContext context)	Draws this element to a canvas-like object maintained in the context.
void	drawMarker(SvgDrawContext context, MarkerVertexType markerVertexType)	Draws a marker in the specified context.
double	getAutoOrientAngle(MarkerSvgNodeRenderer marker, boolean reverse)	Calculates marker orientation angle if orient attribute is set to auto
Rectangle	getObjectBoundingBox(SvgDrawContext context)	Calculates the current object bounding box.
protected java.util.List<Point>	getPoints()	Returns a list of Point objects representing the path to be drawn by the polyline tag.
protected void	setPoints(java.lang.String pointsAttribute)	Parses a string of space separated x,y pairs into individual Point objects and appends them topoints.

Methods inherited from class com.itextpdf.svg.renderers.impl.AbstractSvgNodeRenderer

applyFillAndStrokeProperties, applyNonScalingStrokeTransform, calculateViewPortTranslation, canConstructViewPort, canElementFill, deepCopyAttributesAndStyles, doStrokeOrFill, draw, getAttribute, getAttributeMapCopy, getAttributeOrDefault, getCurrentFontSize, getCurrentFontSize, getCurrentViewBox, getParent, getParentClipPath, isHidden, parseAbsoluteLength, parseHorizontalLength, parseVerticalLength, postDraw, preDraw, retrieveAlignAndMeet, setAttribute, setAttributesAndStyles, setParent

Methods inherited from class java.lang.Object

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

Field Detail

previousOrientationVector

private Vector previousOrientationVector

Orientation vector which is used for marker angle calculation.

points

protected java.util.List<Point> points

A List of Point objects representing the path to be drawn by the polyline tag.

Constructor Detail

PolylineSvgNodeRenderer

public PolylineSvgNodeRenderer()

Method Detail

getPoints

protected java.util.List<Point> getPoints()

Returns a list of Point objects representing the path to be drawn by the polyline tag.

Returns:

a list of Point objects

setPoints

protected void setPoints(java.lang.String pointsAttribute)

Parses a string of space separated x,y pairs into individual Point objects and appends them topoints. Throws an SvgProcessingException if pointsAttribute does not have a valid list of numerical x,y pairs.

Parameters:

pointsAttribute - A string of space separated x,y value pairs

getObjectBoundingBox

public Rectangle getObjectBoundingBox(SvgDrawContext context)

Description copied from interface: ISvgNodeRenderer

Calculates the current object bounding box.

Specified by:

getObjectBoundingBox in interface ISvgNodeRenderer

Parameters:

context - the current context, for instance it contains current viewport and available font data

Returns:

the Rectangle representing the current object's bounding box, or null if bounding box is undefined

doDraw

protected void doDraw(SvgDrawContext context)

Draws this element to a canvas-like object maintained in the context.

Specified by:

doDraw in class AbstractSvgNodeRenderer

Parameters:

context - the object that knows the place to draw this element and maintains its state

createDeepCopy

public ISvgNodeRenderer createDeepCopy()

Description copied from interface: ISvgNodeRenderer

Creates a deep copy of this renderer, including it's subtree of children

Specified by:

createDeepCopy in interface ISvgNodeRenderer

Returns:

deep copy of this renderer

drawMarker

public void drawMarker(SvgDrawContext context,
                       MarkerVertexType markerVertexType)

Description copied from interface: IMarkerCapable

Draws a marker in the specified context. The marker is drawn on the vertices defined according to the given marker type.

Specified by:

drawMarker in interface IMarkerCapable

Parameters:

context - the object that knows the place to draw this element and maintains its state

markerVertexType - type of marker that determine on which vertices of the given element marker should be drawn

getAutoOrientAngle

public double getAutoOrientAngle(MarkerSvgNodeRenderer marker,
                                 boolean reverse)

Description copied from interface: IMarkerCapable

Calculates marker orientation angle if orient attribute is set to auto

Specified by:

getAutoOrientAngle in interface IMarkerCapable

Parameters:

marker - marker for which the rotation angle should be calculated

reverse - indicates that the resulting angle should be rotated 180 degrees

Returns:

marker orientation angle so that its positive x-axis is pointing in the direction of the path at the point it is placed