Class AbstractBranchSvgNodeRenderer

java.lang.Object

com.itextpdf.svg.renderers.impl.AbstractSvgNodeRenderer

com.itextpdf.svg.renderers.impl.AbstractBranchSvgNodeRenderer

All Implemented Interfaces:

IBranchSvgNodeRenderer, ISvgNodeRenderer

Direct Known Subclasses:

AbstractContainerSvgNodeRenderer, AbstractGradientSvgNodeRenderer, ClipPathSvgNodeRenderer, DefsSvgNodeRenderer, GroupSvgNodeRenderer, MarkerSvgNodeRenderer, PatternSvgNodeRenderer, StopSvgNodeRenderer

public abstract class AbstractBranchSvgNodeRenderer
extends AbstractSvgNodeRenderer
implements IBranchSvgNodeRenderer

Abstract class that will be the superclass for any element that can function as a parent.

Nested Class Summary

Nested classes/interfaces inherited from class AbstractSvgNodeRenderer

AbstractSvgNodeRenderer.FillProperties, AbstractSvgNodeRenderer.StrokeProperties

Field Summary

Fields

Modifier and Type	Field	Description
private final List<ISvgNodeRenderer>	children
private static final float	EPS
private static final org.slf4j.Logger	LOGGER
protected static final int	VIEWBOX_VALUES_NUMBER	Deprecated.

Fields inherited from class AbstractSvgNodeRenderer

attributesAndStyles, doFill, doStroke

Constructor Summary

Constructors

Constructor	Description
AbstractBranchSvgNodeRenderer()

Method Summary

Modifier and Type	Method	Description
final void	addChild(ISvgNodeRenderer child)	Adds a renderer as the last element of the list of children.
(package private) void	applyViewBox(SvgDrawContext context)	Applies a transformation based on a viewBox for a given branch node.
private void	applyViewportClip(SvgDrawContext context)	Applies a clipping operation based on the view port.
(package private) void	calculateAndApplyViewBox(SvgDrawContext context, float[] values, Rectangle currentViewPort)
private void	cleanUp(SvgDrawContext context)	Cleans up the SvgDrawContext by removing the current viewport and by popping the current canvas.
abstract ISvgNodeRenderer	createDeepCopy()	Creates a deep copy of this renderer, including it's subtree of children
protected final void	deepCopyChildren(AbstractBranchSvgNodeRenderer deepCopy)	Create a deep copy of every child renderer and add them to the passed AbstractBranchSvgNodeRenderer
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.
private static Rectangle	getBBoxAccordingToVisibleOverflow(SvgDrawContext context)	When in the svg element overflow is visible the corresponding formXObject should have a BBox (form XObject’s bounding box; see PDF 32000-1:2008 - 8.10.2 Form Dictionaries) that should cover the entire svg space (page in pdf) in order to be able to show parts of the element which are outside the current element viewPort.
final List<ISvgNodeRenderer>	getChildren()	Gets all child renderers of this object.
private static boolean	isOverflowVisible(AbstractSvgNodeRenderer currentElement)
(package private) void	postDraw(SvgDrawContext context)	Operations to be performed after drawing the element.

Methods inherited from class AbstractSvgNodeRenderer

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

Methods inherited from class Object

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

Methods inherited from interface ISvgNodeRenderer

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

Field Details

LOGGER

private static final org.slf4j.Logger LOGGER

VIEWBOX_VALUES_NUMBER

@Deprecated
protected static final int VIEWBOX_VALUES_NUMBER

Deprecated.

The number of viewBox values. Deprecate in favour of SvgConstants.Values.VIEWBOX_VALUES_NUMBER

See Also:

• Constant Field Values

EPS

private static final float EPS

See Also:

• Constant Field Values

children

private final List<ISvgNodeRenderer> children

Constructor Details

AbstractBranchSvgNodeRenderer

public AbstractBranchSvgNodeRenderer()

Method Details

doDraw

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.

Specified by:

doDraw in class AbstractSvgNodeRenderer

Parameters:

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

applyViewBox

void applyViewBox(SvgDrawContext context)

Applies a transformation based on a viewBox for a given branch node.

Parameters:

context - current svg draw context

applyViewportClip

private void applyViewportClip(SvgDrawContext context)

Applies a clipping operation based on the view port.

Parameters:

context - the svg draw context

cleanUp

private void cleanUp(SvgDrawContext context)

Cleans up the SvgDrawContext by removing the current viewport and by popping the current canvas.

Parameters:

context - context to clean

addChild

public final void addChild(ISvgNodeRenderer child)

Description copied from interface: IBranchSvgNodeRenderer

Adds a renderer as the last element of the list of children.

Specified by:

addChild in interface IBranchSvgNodeRenderer

Parameters:

child - any renderer

getChildren

public final List<ISvgNodeRenderer> getChildren()

Description copied from interface: IBranchSvgNodeRenderer

Gets all child renderers of this object.

Specified by:

getChildren in interface IBranchSvgNodeRenderer

Returns:

the list of child renderers (in the order that they were added)

deepCopyChildren

protected final void deepCopyChildren(AbstractBranchSvgNodeRenderer deepCopy)

Create a deep copy of every child renderer and add them to the passed AbstractBranchSvgNodeRenderer

Parameters:

deepCopy - renderer to add copies of children to

postDraw

void postDraw(SvgDrawContext context)

Description copied from class: AbstractSvgNodeRenderer

Operations to be performed after drawing the element. This includes filling, stroking.

Overrides:

postDraw in class AbstractSvgNodeRenderer

Parameters:

context - the svg draw context

createDeepCopy

public abstract 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

calculateAndApplyViewBox

void calculateAndApplyViewBox(SvgDrawContext context,
 float[] values,
 Rectangle currentViewPort)

isOverflowVisible

private static boolean isOverflowVisible(AbstractSvgNodeRenderer currentElement)

getBBoxAccordingToVisibleOverflow

private static Rectangle getBBoxAccordingToVisibleOverflow(SvgDrawContext context)

When in the svg element overflow is visible the corresponding formXObject should have a BBox (form XObject’s bounding box; see PDF 32000-1:2008 - 8.10.2 Form Dictionaries) that should cover the entire svg space (page in pdf) in order to be able to show parts of the element which are outside the current element viewPort. To do this, we get the inverse matrix of all the current transformation matrix changes and apply it to the root viewPort. This allows you to get the root rectangle in the final coordinate system.

Parameters:

context - current context to get canvases and view ports

Returns:

the set to PdfStream bbox