Package eu.bandm.tools.d2d2.base

Class SyntaxGraph.Layouter

java.lang.Object

eu.bandm.tools.d2d2.model.MATCH_ONLY_00

eu.bandm.tools.d2d2.model.SinglePhase

eu.bandm.tools.d2d2.base.SyntaxGraph.Layouter

Enclosing class:

SyntaxGraph

public class SyntaxGraph.Layouter
extends SinglePhase

First phase which calculates the sizes of all sub-terms and their positions relative to the containing term. Every action method returns a SizeInfo object in the register sizeInfo. Each graph has one y-value as its entry and exit height, and an entry and exit x-pos. These are stored in SyntaxGraph.y, SyntaxGraph.inX and SyntaxGraph.outX and are all relative to the containing graph.

The action method for a combinator shifts the SizeInfo areas relative to its origin (0,0), and stores the resulting co-ordinates.

In the second phase (the drawing process) these shifts are respected by concatenating affine transformations.

The y-coordinate grows downward. The code for {@link Layouter#(eu.bandm.tools.d2d2.model.Opt)} is commented in detail to demonstrate this strategy.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) SyntaxGraph.SizeInfo	sizeInfo	Current visitor register holding the return value of the last visit.

Fields inherited from class eu.bandm.tools.d2d2.model.MATCH_ONLY_00

_visitor_debug_stream, partial

Constructor Summary

Constructors

Constructor	Description
Layouter()

Method Summary

Modifier and Type	Method	Description
void	action(Alt alt)	Calculate graphic size and position of an Alt-Expressin.
void	action(CharBinary exp)	Caculates the size of the sub-expressions, shifts them to some co-ordinates relative to the binary operator expression, and calculates the resulting sizeInfo.
void	action(CharSetConst cs)	Calculate the size of the visual representation of a character set const.
void	action(CharsRegExp def)
void	action(Greedy greedy)
void	action(Insertion ins)
void	action(Opt opt)	Caculates the size of the sub-expression, shifts the sub-expression to some co-ordinates relative to the Opt-expression, and calculates the resulting sizeInfo:
void	action(ParseParticle pp)	Caculates the size of the sub-expressions, shifts them to some co-ordinates relative to the operator expression, and calculates the resulting sizeInfo.
void	action(Pcdata ref)	Calculate size for the standard constant "#PCDATA" sub-expression.
void	action(Perm perm)	Calculate graphic size and position of a Perm Alt-Expressin.
void	action(Plus plus)	Caculates the size of the sub-expression, shifts the sub-expression to some co-ordinates relative to the Plus-expression, and calculates the resulting sizeInfo.
void	action(Reference ref)
void	action(Seq seq)	Caculates the size of the sub-expression, shifts the sub-expression to some co-ordinates relative to the Seq-expression, and calculates the resulting sizeInfo.
void	action(Star star)	Caculates the size of the sub-expression, shifts the sub-expression to some co-ordinates relative to the Star-expression, and calculates the resulting sizeInfo.
void	action(StringConst sc)	Calculate the size of the visual representation of a String const.
void	action(Subst subst)
void	action(TagsRegExp def)
void	action(XRegExp def)
(package private) void	calculateMetaBox(Expression exp, Expression sub)	Make room for a dashed box around an expression.
SyntaxGraph.SizeInfo	layout(XRegExp def)	Service Access Point: calculate layout coordinates (in/out y, xIn, xOut) for all sub-exprssions in an expression tree.
protected void	processAltOrInnerPerm(Iterator<Expression> subs, int outerW)	Caculates the size of the sub-expression, shifts the sub-expression to some co-ordinates relative to the Alt- or Perm-expression, and calculates the resulting sizeInfo.
protected SyntaxGraph.SizeInfo	sizeInfoByNormalText(String s)	Calculate according to the dimensions of the text to print.

Methods inherited from class eu.bandm.tools.d2d2.model.SinglePhase

action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, action, follow_definitions, follow_defInstances, follow_docu, follow_firsts, follow_globalSubsts, follow_imports, follow_itemDocu, follow_localdefs, follow_localSubsts, follow_modules, follow_namespaces, follow_obligates, follow_on, follow_rawModules, follow_text, follow_weakfirsts, follow_xattributes

Methods inherited from class eu.bandm.tools.d2d2.model.MATCH_ONLY_00

_visitor_trace, action, action, action, action, compile, followAll_definitions, followAll_defInstances, followAll_docu, followAll_firsts, followAll_globalSubsts, followAll_imports, followAll_itemDocu, followAll_localdefs, followAll_localSubsts, followAll_modules, followAll_namespaces, followAll_obligates, followAll_on, followAll_rawModules, followAll_text, followAll_weakfirsts, followAll_xattributes, foreignObject, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, nomatch

Methods inherited from class java.lang.Object

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

Field Details

sizeInfo

SyntaxGraph.SizeInfo sizeInfo

Current visitor register holding the return value of the last visit.

Constructor Details

Layouter

public Layouter()

Method Details

layout

public SyntaxGraph.SizeInfo layout(XRegExp def)

Service Access Point: calculate layout coordinates (in/out y, xIn, xOut) for all sub-exprssions in an expression tree.

action

public void action(XRegExp def)

Overrides:

action in class SinglePhase

action

public void action(TagsRegExp def)

Overrides:

action in class SinglePhase

action

public void action(CharsRegExp def)

Overrides:

action in class SinglePhase

sizeInfoByNormalText

protected SyntaxGraph.SizeInfo sizeInfoByNormalText(String s)

Calculate according to the dimensions of the text to print. Uses SyntaxGraph.mainFont.

action

public void action(Pcdata ref)

Calculate size for the standard constant "#PCDATA" sub-expression.

Overrides:

action in class SinglePhase

calculateMetaBox

void calculateMetaBox(Expression exp,
 Expression sub)

Make room for a dashed box around an expression.

action

public void action(Insertion ins)

Overrides:

action in class SinglePhase

action

public void action(Greedy greedy)

Overrides:

action in class SinglePhase

action

public void action(Subst subst)

Overrides:

action in class SinglePhase

action

public void action(Reference ref)

Overrides:

action in class SinglePhase

action

public void action(Opt opt)

Caculates the size of the sub-expression, shifts the sub-expression to some co-ordinates relative to the Opt-expression, and calculates the resulting sizeInfo:

      
     --------------------------- passline 
         \__xxxxxxxx__/  __ y
            xxxxxxxx         
            xxxxxxxx           = relative co-ordinates of the sub-expr.
            ^xin    ^xout  

  

Overrides:

action in class SinglePhase

action

public void action(Star star)

Caculates the size of the sub-expression, shifts the sub-expression to some co-ordinates relative to the Star-expression, and calculates the resulting sizeInfo. For details see action(eu.bandm.tools.d2d2.model.Opt).

Overrides:

action in class SinglePhase

action

public void action(Plus plus)

Caculates the size of the sub-expression, shifts the sub-expression to some co-ordinates relative to the Plus-expression, and calculates the resulting sizeInfo. For details see action(eu.bandm.tools.d2d2.model.Opt).

Overrides:

action in class SinglePhase

processAltOrInnerPerm

protected void processAltOrInnerPerm(Iterator<Expression> subs,
 int outerW)

Caculates the size of the sub-expression, shifts the sub-expression to some co-ordinates relative to the Alt- or Perm-expression, and calculates the resulting sizeInfo. For details see action(eu.bandm.tools.d2d2.model.Opt).

action

public void action(Alt alt)

Calculate graphic size and position of an Alt-Expressin.

Overrides:

action in class SinglePhase

See Also:

• processAltOrInnerPerm(Iterator,int)

action

public void action(Perm perm)

Calculate graphic size and position of a Perm Alt-Expressin.

Overrides:

action in class SinglePhase

See Also:

• processAltOrInnerPerm(Iterator,int)

action

public void action(Seq seq)

Caculates the size of the sub-expression, shifts the sub-expression to some co-ordinates relative to the Seq-expression, and calculates the resulting sizeInfo. For details see action(eu.bandm.tools.d2d2.model.Opt).

Overrides:

action in class SinglePhase

action

public void action(CharSetConst cs)

Calculate the size of the visual representation of a character set const.

Overrides:

action in class SinglePhase

action

public void action(CharBinary exp)

Caculates the size of the sub-expressions, shifts them to some co-ordinates relative to the binary operator expression, and calculates the resulting sizeInfo. For details see action(eu.bandm.tools.d2d2.model.Opt).

Overrides:

action in class SinglePhase

action

public void action(ParseParticle pp)

Caculates the size of the sub-expressions, shifts them to some co-ordinates relative to the operator expression, and calculates the resulting sizeInfo. For details see action(eu.bandm.tools.d2d2.model.Opt).

Overrides:

action in class SinglePhase

action

public void action(StringConst sc)

Calculate the size of the visual representation of a String const.

Overrides:

action in class SinglePhase