com.itextpdf.svg.renderers.impl

Class AbstractGradientSvgNodeRenderer

java.lang.Object

com.itextpdf.svg.renderers.impl.AbstractSvgNodeRenderer

com.itextpdf.svg.renderers.impl.AbstractBranchSvgNodeRenderer

com.itextpdf.svg.renderers.impl.NoDrawOperationSvgNodeRenderer

com.itextpdf.svg.renderers.impl.AbstractGradientSvgNodeRenderer

All Implemented Interfaces:

IBranchSvgNodeRenderer, ISvgNodeRenderer

Direct Known Subclasses:

LinearGradientSvgNodeRenderer

public abstract class AbstractGradientSvgNodeRenderer
extends NoDrawOperationSvgNodeRenderer

ISvgNodeRenderer abstract implementation for gradient tags (<linearGradient>, <radialGradient>).

Field Summary

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

attributesAndStyles

Constructor Summary

Constructors

Constructor and Description
AbstractGradientSvgNodeRenderer()

Method Summary

Modifier and Type	Method and Description
abstract com.itextpdf.kernel.colors.Color	createColor(SvgDrawContext context, com.itextpdf.kernel.geom.Rectangle objectBoundingBox, float objectBoundingBoxMargin, float parentOpacity) Creates the Color that represents the corresponding gradient for specified object box
protected void	doDraw(SvgDrawContext context) Method that will set properties to be inherited by this branch renderer's children and will iterate over all children in order to draw them.
protected List<StopSvgNodeRenderer>	getChildStopRenderers() Construct a list of child stop renderers
protected com.itextpdf.kernel.geom.AffineTransform	getGradientTransform() Evaluates the 'gradientTransform' transformations
protected boolean	isObjectBoundingBoxUnits() Checks whether the gradient units values are on user space on use or object bounding box
protected com.itextpdf.kernel.colors.gradients.GradientSpreadMethod	parseSpreadMethod() Parses the gradient spread method

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

createDeepCopy

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

addChild, deepCopyChildren, getChildren

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

canConstructViewPort, canElementFill, deepCopyAttributesAndStyles, draw, getAttribute, getAttributeMapCopy, getAttributeOrDefault, getCurrentFontSize, getObjectBoundingBox, getParent, parseAbsoluteLength, setAttribute, setAttributesAndStyles, setParent

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.itextpdf.svg.renderers.ISvgNodeRenderer

draw, getAttribute, getAttributeMapCopy, getParent, setAttribute, setAttributesAndStyles, setParent

Constructor Detail

AbstractGradientSvgNodeRenderer

public AbstractGradientSvgNodeRenderer()

Method Detail

doDraw

protected void doDraw(SvgDrawContext context)

Description copied from class: AbstractBranchSvgNodeRenderer

Method that will set properties to be inherited by this branch renderer's children and will iterate over all children in order to draw them.

Overrides:

doDraw in class NoDrawOperationSvgNodeRenderer

Parameters:

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

createColor

public abstract com.itextpdf.kernel.colors.Color createColor(SvgDrawContext context,
                                                             com.itextpdf.kernel.geom.Rectangle objectBoundingBox,
                                                             float objectBoundingBoxMargin,
                                                             float parentOpacity)

Creates the Color that represents the corresponding gradient for specified object box

Parameters:

context - the current svg draw context

objectBoundingBox - the coloring object bounding box without any adjustments (additional stroke width or others)

objectBoundingBoxMargin - the objectBoundingBoxMargin of the object bounding box to be colored (for example - the part of stroke width that exceeds the object bounding box, i.e. the half of stroke width value)

parentOpacity - current parent opacity modifier

Returns:

the created color

isObjectBoundingBoxUnits

protected boolean isObjectBoundingBoxUnits()

Checks whether the gradient units values are on user space on use or object bounding box

Returns:

false if the 'gradientUnits' value of the gradient tag equals to 'userSpaceOnUse', otherwise true

getGradientTransform

protected com.itextpdf.kernel.geom.AffineTransform getGradientTransform()

Evaluates the 'gradientTransform' transformations

Returns:

an AffineTransform object representing the specified gradient transformation

getChildStopRenderers

protected List<StopSvgNodeRenderer> getChildStopRenderers()

Construct a list of child stop renderers

Returns:

a list of StopSvgNodeRenderer elements that represents the child stop values

parseSpreadMethod

protected com.itextpdf.kernel.colors.gradients.GradientSpreadMethod parseSpreadMethod()

Parses the gradient spread method

Returns:

the parsed GradientSpreadMethod specified in the gradient