Module io.sf.carte.echosvg.css

Package io.sf.carte.echosvg.css.engine.value

Class LengthManager

java.lang.Object

io.sf.carte.echosvg.css.engine.value.AbstractValueFactory

io.sf.carte.echosvg.css.engine.value.AbstractValueManager

io.sf.carte.echosvg.css.engine.value.LengthManager

All Implemented Interfaces:

ValueManager

Direct Known Subclasses:

BaselineShiftManager, EnableBackgroundManager, FontSizeManager, KerningManager, LineHeightManager, MarginLengthManager, RectManager, SpacingManager, StrokeDasharrayManager, StrokeDashoffsetManager, StrokeWidthManager

public abstract class LengthManager
extends AbstractValueManager

This class provides a manager for the property with support for length values.

Original author: Stephane Hillion. For later modifications, see Git history.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final int	BOTH_ORIENTATION
static final float	DEFAULT_LINE_HEIGHT	The default line height.
protected static final int	HORIZONTAL_ORIENTATION
protected static final int	VERTICAL_ORIENTATION

Constructor Summary

Constructors

Constructor	Description
LengthManager()

Method Summary

Modifier and Type	Method	Description
Value	computeValue(CSSStylableElement elt, String pseudo, CSSEngine engine, int idx, StyleMap sm, Value value)	Implements ValueManager.computeValue(CSSStylableElement,String,CSSEngine,int,StyleMap,Value).
Value	createValue(LexicalUnit lu, CSSEngine engine)	Implements ValueManager.createValue(LexicalUnit,CSSEngine).
protected abstract int	getOrientation()	Indicates the orientation of the property associated with this manager.
protected float	lineHeightValue(CSSStylableElement elt, String pseudo, CSSEngine engine, Value v)

Methods inherited from class io.sf.carte.echosvg.css.engine.value.AbstractValueManager

createCalc, createDOMException, createLexicalValue, createMathFunction, createURIValue, evaluateMath, lengthValue

Methods inherited from class io.sf.carte.echosvg.css.engine.value.AbstractValueFactory

createDOMException, createInvalidFloatTypeDOMException, createInvalidFloatValueDOMException, createInvalidIdentifierDOMException, createInvalidLexicalUnitDOMException, createInvalidStringTypeDOMException, createMalformedLexicalUnitDOMException, getPropertyName, resolveURI

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.sf.carte.echosvg.css.engine.value.ValueManager

getDefaultValue, getPropertyName, getPropertyType, isAdditiveProperty, isAnimatableProperty, isInheritedProperty

Field Details

DEFAULT_LINE_HEIGHT

public static final float DEFAULT_LINE_HEIGHT

The default line height.

In SVG 1.1 the line height is defined to be 1, and Batik uses that value in the SVG 1.1 implementation, but it uses 1.1 as the default value for the SVG 1.2 implementation. For accessibility reasons this projects adopts the latter, which implies that images rendered with the SVG 1.1 implementation of Batik may show a different line-height with respect to EchoSVG.

In SVG2 line-height is defined as in CSS2, but "It is not applicable to text on a path". Web browsers use a default based on the font family, close to 1.2

See Also:

• Constant Field Values

HORIZONTAL_ORIENTATION

protected static final int HORIZONTAL_ORIENTATION

See Also:

• Constant Field Values

VERTICAL_ORIENTATION

protected static final int VERTICAL_ORIENTATION

See Also:

• Constant Field Values

BOTH_ORIENTATION

protected static final int BOTH_ORIENTATION

See Also:

• Constant Field Values

Constructor Details

LengthManager

public LengthManager()

Method Details

createValue

public Value createValue(LexicalUnit lu,
 CSSEngine engine)
                  throws DOMException

Implements ValueManager.createValue(LexicalUnit,CSSEngine).

Parameters:

lu - The SAC lexical unit used to create the value.

engine - The calling CSSEngine.

Throws:

DOMException

computeValue

public Value computeValue(CSSStylableElement elt,
 String pseudo,
 CSSEngine engine,
 int idx,
 StyleMap sm,
 Value value)

Implements ValueManager.computeValue(CSSStylableElement,String,CSSEngine,int,StyleMap,Value).

Specified by:

computeValue in interface ValueManager

Overrides:

computeValue in class AbstractValueManager

Parameters:

elt - The owner of the value.

pseudo - The pseudo element.

engine - The CSSEngine.

idx - The property index in the engine.

sm - The computed style map.

value - The value to compute.

lineHeightValue

protected float lineHeightValue(CSSStylableElement elt,
 String pseudo,
 CSSEngine engine,
 Value v)
                         throws DOMException

Throws:

DOMException

getOrientation

protected abstract int getOrientation()

Indicates the orientation of the property associated with this manager.