net.sourceforge.jeuclid.elements.presentation.token
Class AbstractTokenWithTextLayout

java.lang.Object
  net.sourceforge.jeuclid.dom.AbstractPartialNodeImpl
      net.sourceforge.jeuclid.dom.AbstractPartialElementImpl
          net.sourceforge.jeuclid.dom.AbstractChangeTrackingElement
              net.sourceforge.jeuclid.elements.AbstractJEuclidElement
                  net.sourceforge.jeuclid.elements.presentation.token.AbstractTokenWithTextLayout

All Implemented Interfaces:

ChangeTrackingInterface, DisplayableNode, JEuclidElement, JEuclidNode, Element, MathMLElement, MathMLPresentationElement, MathMLPresentationToken, Node

Direct Known Subclasses:

AbstractTokenWithStandardLayout, Mglyph, Ms

public abstract class AbstractTokenWithTextLayout
extends AbstractJEuclidElement
implements MathMLPresentationToken

Common functionality for all tokens based on a text layout.

Version:

$Revision: 369 $

Author:

Max Berger

Nested Class Summary

Nested classes/interfaces inherited from class net.sourceforge.jeuclid.dom.AbstractPartialElementImpl

AbstractPartialElementImpl.AttributeNodeMap, AbstractPartialElementImpl.AttrImpl

Nested classes/interfaces inherited from class net.sourceforge.jeuclid.dom.AbstractPartialNodeImpl

AbstractPartialNodeImpl.NodeList

Field Summary

Fields inherited from class net.sourceforge.jeuclid.elements.AbstractJEuclidElement

ALIGN_AXIS, ALIGN_BASELINE, ALIGN_BOTTOM, ALIGN_CENTER, ALIGN_LEFT, ALIGN_RIGHT, ALIGN_TOP, ATTR_CLASS, ATTR_DEPRECATED_BACKGROUND, ATTR_DEPRECATED_COLOR, ATTR_DEPRECATED_FONTFAMILY, ATTR_DEPRECATED_FONTSIZE, ATTR_DEPRECATED_FONTSTYLE, ATTR_DEPRECATED_FONTWEIGHT, ATTR_HREF, ATTR_ID, ATTR_MATHBACKGROUND, ATTR_MATHCOLOR, ATTR_MATHSIZE, ATTR_MATHVARIANT, ATTR_STYLE, ATTR_XREF, TRIVIAL_SPACE_MAX, URI

Fields inherited from interface org.w3c.dom.Node

ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_POSITION_CONTAINED_BY, DOCUMENT_POSITION_CONTAINS, DOCUMENT_POSITION_DISCONNECTED, DOCUMENT_POSITION_FOLLOWING, DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, DOCUMENT_POSITION_PRECEDING, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NOTATION_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE

Constructor Summary

AbstractTokenWithTextLayout(MathBase base)
Default constructor.

Method Summary

float	calculateAscentHeight(Graphics2D g) Returns the current height of the upper part (over the base line).
float	calculateDescentHeight(Graphics2D g) Calculates descent height (under the base line) of the element.
float	calculateWidth(Graphics2D g) Caculates width of the element.
protected void	changeHook() Called on any change.
TextLayout	getLayout() Returns TextLayout used to paint text of this element.
protected abstract boolean	isEmpty() Checks if this element is empty.
void	paint(Graphics2D g, float posX, float posY) Paints this element.
protected abstract AttributedString	textContentAsAttributedString() Retrieve the text content as attributed string.

Methods inherited from class net.sourceforge.jeuclid.elements.AbstractJEuclidElement

addMathElement, addText, calculateHeight, debug, getAbsoluteScriptLevel, getAscentHeight, getBackgroundColor, getClassName, getContents, getDescentHeight, getFont, getFontMetrics, getFontsizeInPoint, getForegroundColor, getGlobalLineCorrector, getHeight, getHref, getId, getIndexOfMathElement, getInheritedScriptlevel, getMathAttribute, getMathbackground, getMathBase, getMathcolor, getMathElement, getMathElementCount, getMathElementStyle, getMathsize, getMathsizeInPoint, getMathvariant, getMathvariantAsVariant, getMiddleShift, getOwnerMathElement, getPaintedPosX, getPaintedPosY, getParent, getScriptlevelForChild, getScriptSizeMultiplier, getText, getWidth, getXCenter, getXref, hasChildPostscripts, hasChildPrescripts, isCalculatingSize, isChildBlock, recalculateSize, setCalculatingSize, setClassName, setDefaultMathAttribute, setFakeParent, setGlobalLineCorrector, setHref, setId, setMathAttributes, setMathbackground, setMathBase, setMathcolor, setMathElement, setMathElementStyle, setMathsize, setMathvariant, setScriptSizeMultiplier, setXref

Methods inherited from class net.sourceforge.jeuclid.dom.AbstractChangeTrackingElement

addListener, appendChild, fireChanged, fireChangeForSubTree, replaceChild, setAttribute, setTextContent

Methods inherited from class net.sourceforge.jeuclid.dom.AbstractPartialElementImpl

getAttribute, getAttributeNode, getAttributeNodeNS, getAttributeNS, getAttributes, getElementsByTagName, getElementsByTagNameNS, getLocalName, getNodeName, getNodeType, getSchemaTypeInfo, hasAttribute, hasAttributeNS, removeAttribute, removeAttributeNode, removeAttributeNS, setAttributeNode, setAttributeNodeNS, setAttributeNS, setIdAttribute, setIdAttributeNode, setIdAttributeNS, toString

Methods inherited from class net.sourceforge.jeuclid.dom.AbstractPartialNodeImpl

cloneNode, compareDocumentPosition, getBaseURI, getChildNodes, getFeature, getFirstChild, getLastChild, getNamespaceURI, getNextSibling, getNodeValue, getOwnerDocument, getParentNode, getPrefix, getPreviousSibling, getTextContent, getUserData, hasAttributes, hasChildNodes, insertBefore, isDefaultNamespace, isEqualNode, isSameNode, isSupported, lookupNamespaceURI, lookupPrefix, normalize, removeChild, setNodeValue, setPrefix, setUserData

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.w3c.dom.mathml.MathMLPresentationToken

getContents, getMathbackground, getMathcolor, getMathsize, getMathvariant, setMathbackground, setMathcolor, setMathsize, setMathvariant

Methods inherited from interface org.w3c.dom.mathml.MathMLElement

getClassName, getHref, getId, getMathElementStyle, getOwnerMathElement, getXref, setClassName, setHref, setId, setMathElementStyle, setXref

Methods inherited from interface org.w3c.dom.Element

getAttribute, getAttributeNode, getAttributeNodeNS, getAttributeNS, getElementsByTagName, getElementsByTagNameNS, getSchemaTypeInfo, getTagName, hasAttribute, hasAttributeNS, removeAttribute, removeAttributeNode, removeAttributeNS, setAttribute, setAttributeNode, setAttributeNodeNS, setAttributeNS, setIdAttribute, setIdAttributeNode, setIdAttributeNS

Methods inherited from interface org.w3c.dom.Node

appendChild, cloneNode, compareDocumentPosition, getAttributes, getBaseURI, getChildNodes, getFeature, getFirstChild, getLastChild, getLocalName, getNamespaceURI, getNextSibling, getNodeName, getNodeType, getNodeValue, getOwnerDocument, getParentNode, getPrefix, getPreviousSibling, getTextContent, getUserData, hasAttributes, hasChildNodes, insertBefore, isDefaultNamespace, isEqualNode, isSameNode, isSupported, lookupNamespaceURI, lookupPrefix, normalize, removeChild, replaceChild, setNodeValue, setPrefix, setTextContent, setUserData

Methods inherited from interface net.sourceforge.jeuclid.dom.ChangeTrackingInterface

addListener, fireChanged, fireChangeForSubTree

Constructor Detail

AbstractTokenWithTextLayout

public AbstractTokenWithTextLayout(MathBase base)

Default constructor.

Parameters:

base - The base for the math element tree.

Method Detail

paint

public void paint(Graphics2D g,
                  float posX,
                  float posY)

Paints this element.

Specified by:

paint in interface DisplayableNode

Overrides:

paint in class AbstractJEuclidElement

Parameters:

g - The graphics context to use for painting.

posX - The first left position for painting.

posY - The position of the baseline.

textContentAsAttributedString

protected abstract AttributedString textContentAsAttributedString()

Retrieve the text content as attributed string. Should be overridden

Returns:

an AttributedString

isEmpty

protected abstract boolean isEmpty()

Checks if this element is empty.

Returns:

true if empty.

getLayout

public TextLayout getLayout()

Returns TextLayout used to paint text of this element.

Returns:

TextLayout instance or null, if layout was not computed yet

calculateWidth

public float calculateWidth(Graphics2D g)

Caculates width of the element.

Specified by:

calculateWidth in class AbstractJEuclidElement

Parameters:

g - Graphics2D context to use.

Returns:

Width of the element.

calculateAscentHeight

public float calculateAscentHeight(Graphics2D g)

Returns the current height of the upper part (over the base line).

Specified by:

calculateAscentHeight in interface JEuclidElement

Specified by:

calculateAscentHeight in class AbstractJEuclidElement

Parameters:

g - Graphics2D context to use.

Returns:

Height of the upper part.

calculateDescentHeight

public float calculateDescentHeight(Graphics2D g)

Calculates descent height (under the base line) of the element.

Specified by:

calculateDescentHeight in interface JEuclidElement

Specified by:

calculateDescentHeight in class AbstractJEuclidElement

Parameters:

g - Graphics2D context to use.

Returns:

Descent height value.

changeHook

protected void changeHook()

Called on any change. Please override!

Overrides:

changeHook in class AbstractJEuclidElement