Package org.apache.fop.layoutmgr.inline

Class LineLayoutManager.LineBreakingAlgorithm

java.lang.Object

org.apache.fop.layoutmgr.BreakingAlgorithm

org.apache.fop.layoutmgr.inline.LineLayoutManager.LineBreakingAlgorithm

Enclosing class:

LineLayoutManager

private class LineLayoutManager.LineBreakingAlgorithm
extends BreakingAlgorithm

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.fop.layoutmgr.BreakingAlgorithm

BreakingAlgorithm.BestRecords, BreakingAlgorithm.KnuthNode

Field Summary

Fields

Modifier and Type	Field	Description
private int	activePossibility
private int	addedPositions
private final int	follow
private final int	lead
private final int	lineHeight
private static final double	MAX_DEMERITS
private final int	pageAlignment
private final int	textIndent
private final LineLayoutManager	thisLLM

Fields inherited from class org.apache.fop.layoutmgr.BreakingAlgorithm

activeLines, activeNodeCount, alignment, alignmentLast, ALL_BREAKS, best, considerTooShort, endLine, incompatibleFitnessDemerit, indentFirstPart, INFINITE_RATIO, lineWidth, log, maxFlaggedPenaltiesCount, NO_FLAGGED_PENALTIES, ONLY_FORCED_BREAKS, par, repeatedFlaggedDemerit, startLine, totalShrink, totalStretch, totalWidth

Constructor Summary

Constructors

Constructor	Description
LineBreakingAlgorithm(int pageAlign, int textAlign, int textAlignLast, int indent, int fillerWidth, int lh, int ld, int fl, boolean first, int maxFlagCount, LineLayoutManager llm)

Method Summary

Modifier and Type	Method	Description
protected int	filterActiveNodes()	Filter active nodes.
private LineLayoutManager.LineBreakPosition	makeLineBreakPosition(KnuthSequence par, int firstElementIndex, int lastElementIndex, int availableShrink, int availableStretch, int difference, double ratio, int startIndent, int endIndent)
void	resetAlgorithm()
void	updateData1(int lineCount, double demerits)	Empty method, hook for subclasses.
void	updateData2(BreakingAlgorithm.KnuthNode bestActiveNode, KnuthSequence par, int total)	Empty method, hook for subclasses.

Methods inherited from class org.apache.fop.layoutmgr.BreakingAlgorithm

activateNode, addNode, calculateBreakPoints, compareNodes, computeAdjustmentRatio, computeDemerits, computeDifference, considerLegalBreak, createForcedNodes, createNode, createNode, deactivateNode, disableFloatHandling, elementCanEndLine, findBreakingPoints, findBreakingPoints, finish, forceNode, getAlignment, getAlignmentLast, getElement, getIPDdifference, getLastTooLong, getLastTooShort, getLineWidth, getLineWidth, getMaxRecoveryAttempts, getNode, handleBox, handleElementAt, handleFloat, handleGlueAt, handleIpdChange, handlePenaltyAt, handlingFloat, initialize, isPartOverflowRecoveryActivated, recoverFromOverflow, recoverFromTooLong, removeNode, replaceLastDeactivated, restartFrom, setConstantLineWidth, toString

Methods inherited from class java.lang.Object

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

Field Details

thisLLM

private final LineLayoutManager thisLLM

pageAlignment

private final int pageAlignment

activePossibility

private int activePossibility

addedPositions

private int addedPositions

textIndent

private final int textIndent

lineHeight

private final int lineHeight

lead

private final int lead

follow

private final int follow

MAX_DEMERITS

private static final double MAX_DEMERITS

See Also:

• Constant Field Values

Constructor Details

LineBreakingAlgorithm

public LineBreakingAlgorithm(int pageAlign,
 int textAlign,
 int textAlignLast,
 int indent,
 int fillerWidth,
 int lh,
 int ld,
 int fl,
 boolean first,
 int maxFlagCount,
 LineLayoutManager llm)

Method Details

updateData1

public void updateData1(int lineCount,
 double demerits)

Description copied from class: BreakingAlgorithm

Empty method, hook for subclasses. Called before determining the optimal breakpoints corresponding to a given active node.

Specified by:

updateData1 in class BreakingAlgorithm

Parameters:

lineCount - number of lines for the active node

demerits - total demerits of the paragraph for the active node

updateData2

public void updateData2(BreakingAlgorithm.KnuthNode bestActiveNode,
 KnuthSequence par,
 int total)

Description copied from class: BreakingAlgorithm

Empty method, hook for subclasses. Called when determining the optimal breakpoints for a given active node.

Specified by:

updateData2 in class BreakingAlgorithm

Parameters:

bestActiveNode - a node in the chain of best active nodes, corresponding to one of the optimal breakpoints

par - the corresponding paragraph

total - the number of lines into which the paragraph will be broken

resetAlgorithm

public void resetAlgorithm()

makeLineBreakPosition

private LineLayoutManager.LineBreakPosition makeLineBreakPosition(KnuthSequence par,
 int firstElementIndex,
 int lastElementIndex,
 int availableShrink,
 int availableStretch,
 int difference,
 double ratio,
 int startIndent,
 int endIndent)

filterActiveNodes

protected int filterActiveNodes()

Description copied from class: BreakingAlgorithm

Filter active nodes.

Specified by:

filterActiveNodes in class BreakingAlgorithm

Returns:

an integer