Maintainer	[email protected]

Data.GraphViz.Attributes

Contents

The actual Dot attributes.
- Validity functions on Attribute values.
Value types for Attributes.
Types representing the Dot grammar for ArrowType.
- Default ArrowType aliases.
- ArrowModifier instances

Description

This module defines the various attributes that different parts of a GraphViz graph can have. These attributes are based on the documentation found at: http://graphviz.org/doc/info/attrs.html

For more information on usage, etc. please see that document.

A summary of known current constraints/limitations/differences:

There might still be a few cases where quotes are still not escaped/parsed correctly; if you find such a situation, please let me know; however, you should be able to use String values directly without having to worry about when quotes are required or extra escaping of quote characters as PrintDot and ParseDot instances for String should take care of that for you.
Note that for an edge, in Dot parlance if the edge goes from A to B, then A is the tail node and B is the head node (since A is at the tail end of the arrow).
When parsing named Color values, the entire value entered is kept as-is; this library as yet has no understanding of different color schemes, etc.
ColorList and PointfList are defined as actual lists (but LayerList is not). Note that for the Color Attribute for node values, only a single Color is valid; edges are allowed multiple colors with one spline/arrow per color in the list (but you must have at least one Color in the list). This might be changed in future.
Style is implemented as a list of StyleItem values; note that empty lists are not allowed.
A lot of values have a possible value of none. These now have custom constructors. In fact, most constructors have been expanded upon to give an idea of what they represent rather than using generic terms.
PointF and Point have been combined, and feature support for pure Int-based co-ordinates as well as Double ones (i.e. no floating point-only points for Point). The optional ! and third value for Point are not available.
Rect uses two Point values to denote the lower-left and top-right corners.
The two LabelLoc attributes have been combined.
The defined LayerSep is not used to parse LayerRange or LayerList; the default ([' ', :, '\t']) is instead used.
SplineType has been replaced with [Spline].
Only polygon-based Shapes are available.
PortPos only has the CompassPoint option, not PortName[:CompassPoint] (since record shapes aren't allowed, and parsing HTML-like labels could be problematic).
Not every Attribute is fully documented/described. However, all those which have specific allowed values should be covered.
Deprecated Overlap algorithms are not defined.

Synopsis

The actual Dot attributes.

data Attribute Source

These attributes have been implemented in a permissive manner: that is, rather than split them up based on which type of value they are allowed, they have all been included in the one data type, with functions to determine if they are indeed valid for what they're being applied to.

To interpret the Valid for listings:

G: Valid for Graphs.
C: Valid for Clusters.
S: Valid for Sub-Graphs (and also Clusters).
N: Valid for Nodes.
E: Valid for Edges.

The Default listings are those that the various GraphViz commands use if that Attribute isn't specified (in cases where this is none, this is equivalent to a Nothing value; that is, no value is used). The Parsing Default listings represent what value is used (i.e. corresponds to True) when the Attribute name is listed on its own in Dot source code.

Constructors

Damping Double	Valid for: G; Default: `0.99`; Minimum: `0.0`; Notes: neato only
K Double	Valid for: GC; Default: `0.3`; Minimum: `0`; Notes: sfdp, fdp only
URL URL	Valid for: ENGC; Default: none; Notes: svg, postscript, map only
ArrowHead ArrowType	Valid for: E; Default: `normal`
ArrowSize Double	Valid for: E; Default: `1.0`; Minimum: `0.0`
ArrowTail ArrowType	Valid for: E; Default: `normal`
Aspect AspectType	Valid for: G; Notes: dot only
Bb Rect	Valid for: G; Notes: write only
BgColor Color	Valid for: GC; Default: none
Center Bool	Valid for: G; Default: `False`; Parsing Default: `True`
Charset String	Valid for: G; Default: `"UTF-8"`
ClusterRank ClusterMode	Valid for: G; Default: `Local`; Notes: dot only
Color [Color]	Valid for: ENC; Default: `black`
ColorScheme String	Valid for: ENCG; Default: `""`
Comment String	Valid for: ENG; Default: `""`
Compound Bool	Valid for: G; Default: `False`; Parsing Default: `True`; Notes: dot only
Concentrate Bool	Valid for: G; Default: `False`; Parsing Default: `True`
Constraint Bool	Valid for: E; Default: `True`; Parsing Default: `True`; Notes: dot only
Decorate Bool	Valid for: E; Default: `False`; Parsing Default: `True`
DefaultDist Double	Valid for: G; Default: `1+(avg. len)sqrt(\|V\|)`; Minimum: `epsilon`; Notes*: neato only
Dim Int	Valid for: G; Default: `2`; Minimum: `2`; Notes: sfdp, fdp, neato only
Dimen Int	Valid for: G; Default: `2`; Minimum: `2`; Notes: sfdp, fdp, neato only
Dir DirType	Valid for: E; Default: `Forward` (directed), `NoDir` (undirected)
DirEdgeConstraints DEConstraints	Valid for: G; Default: `NoConstraints`; Parsing Default: `EdgeConstraints`; Notes: neato only
Distortion Double	Valid for: N; Default: `0.0`; Minimum: `-100.0`
DPI Double	Valid for: G; Default: `96.0`, `0.0`; Notes: svg, bitmap output only; "resolution" is a synonym
EdgeURL URL	Valid for: E; Default: `""`; Notes: svg, map only
EdgeTarget EscString	Valid for: E; Default: none; Notes: svg, map only
EdgeTooltip EscString	Valid for: E; Default: `""`; Notes: svg, cmap only
Epsilon Double	Valid for: G; Default: `.0001 * # nodes` (`mode == KK`), `.0001` (`mode == Major`); Notes: neato only
ESep DPoint	Valid for: G; Default: `+3`; Notes: not dot
FillColor Color	Valid for: NC; Default: `lightgrey` (nodes), `black` (clusters)
FixedSize Bool	Valid for: N; Default: `False`; Parsing Default: `True`
FontColor Color	Valid for: ENGC; Default: `black`
FontName String	Valid for: ENGC; Default: `"Times-Roman"`
FontNames String	Valid for: G; Default: `""`; Notes: svg only
FontPath String	Valid for: G; Default: system-dependent
FontSize Double	Valid for: ENGC; Default: `14.0`; Minimum: `1.0`
Group String	Valid for: N; Default: `""`; Notes: dot only
HeadURL URL	Valid for: E; Default: `""`; Notes: svg, map only
HeadClip Bool	Valid for: E; Default: `True`; Parsing Default: `True`
HeadLabel Label	Valid for: E; Default: `""`
HeadPort PortPos	Valid for: E; Default: `PP CenterPoint`
HeadTarget EscString	Valid for: E; Default: none; Notes: svg, map only
HeadTooltip EscString	Valid for: E; Default: `""`; Notes: svg, cmap only
Height Double	Valid for: N; Default: `0.5`; Minimum: `0.02`
ID Label	Valid for: GNE; Default: `""`; Notes: svg, postscript, map only
Image String	Valid for: N; Default: `""`
ImageScale ScaleType	Valid for: N; Default: `NoScale`; Parsing Default: `UniformScale`
Label Label	Valid for: ENGC; Default: `StrLabel "N"` (nodes), `StrLabel ""` (otherwise)
LabelURL URL	Valid for: E; Default: `""`; Notes: svg, map only
LabelAngle Double	Valid for: E; Default: `-25.0`; Minimum: `-180.0`
LabelDistance Double	Valid for: E; Default: `1.0`; Minimum: `0.0`
LabelFloat Bool	Valid for: E; Default: `False`; Parsing Default: `True`
LabelFontColor Color	Valid for: E; Default: `black`
LabelFontName String	Valid for: E; Default: `"Times-Roman"`
LabelFontSize Double	Valid for: E; Default: `14.0`; Minimum: `1.0`
LabelJust Justification	Valid for: GC; Default: `JCenter`
LabelLoc VerticalPlacement	Valid for: GCN; Default: `VTop` (clusters), `VBottom` (root graphs), `VCenter` (nodes)
LabelTarget EscString	Valid for: E; Default: none; Notes: svg, map only
LabelTooltip EscString	Valid for: E; Default: `""`; Notes: svg, cmap only
Landscape Bool	Valid for: G; Default: `False`; Parsing Default: `True`
Layer LayerRange	Valid for: EN; Default: `""`
Layers LayerList	Valid for: G; Default: `""`
LayerSep String	Valid for: G; Default: `" :t"`
Layout String	Valid for: G; Default: `""`
Len Double	Valid for: E; Default: `1.0` (neato), `0.3` (fdp); Notes: fdp, neato only
Levels Int	Valid for: G; Default: `MAXINT`; Minimum: `0`; Notes: sfdp only
LevelsGap Double	Valid for: G; Default: `0.0`; Notes: neato only
LHead String	Valid for: E; Default: `""`; Notes: dot only
LPos Point	Valid for: EGC; Notes: write only
LTail String	Valid for: E; Default: `""`; Notes: dot only
Margin DPoint	Valid for: NG; Default: device-dependent
MaxIter Int	Valid for: G; Default: `100 * # nodes` (`mode == KK`), `200` (`mode == Major`), `600` (fdp); Notes: fdp, neato only
MCLimit Double	Valid for: G; Default: `1.0`; Notes: dot only
MinDist Double	Valid for: G; Default: `1.0`; Minimum: `0.0`; Notes: circo only
MinLen Int	Valid for: E; Default: `1`; Minimum: `0`; Notes: dot only
Mode ModeType	Valid for: G; Default: `Major`; Notes: neato only
Model Model	Valid for: G; Default: `ShortPath`; Notes: neato only
Mosek Bool	Valid for: G; Default: `False`; Parsing Default: `True`; Notes: neato only; requires the Mosek software
NodeSep Double	Valid for: G; Default: `0.25`; Minimum: `0.02`; Notes: dot only
NoJustify Bool	Valid for: GCNE; Default: `False`; Parsing Default: `True`
Normalize Bool	Valid for: G; Default: `False`; Parsing Default: `True`; Notes: not dot
Nslimit Double	Valid for: G; Notes: dot only
Nslimit1 Double	Valid for: G; Notes: dot only
Ordering String	Valid for: G; Default: `""`; Notes: dot only
Orientation Double	Valid for: N; Default: `0.0`; Minimum: `360.0`
OrientationGraph String	Valid for: G; Default: `""`; Notes: Landscape if "[lL]*" and rotate not defined
OutputOrder OutputMode	Valid for: G; Default: `BreadthFirst`
Overlap Overlap	Valid for: G; Default: `KeepOverlaps`; Parsing Default: `KeepOverlaps`; Notes: not dot
OverlapScaling Double	Valid for: G; Default: `-4`; Minimum: `-1.0e10`; Notes: prism only
Pack Pack	Valid for: G; Default: `False`; Parsing Default: `DoPack`; Notes: not dot
PackMode PackMode	Valid for: G; Default: `PackNode`; Notes: not dot
Pad DPoint	Valid for: G; Default: `DVal 0.0555` (4 points)
Page Point	Valid for: G
PageDir PageDir	Valid for: G; Default: `BL`
PenColor Color	Valid for: C; Default: `black`
PenWidth Double	Valid for: CNE; Default: `1.0`; Minimum: `0.0`
Peripheries Int	Valid for: NC; Default: shape default (nodes), `1` (clusters); Minimum: 0
Pin Bool	Valid for: N; Default: `False`; Parsing Default: `True`; Notes: fdp, neato only
Pos Pos	Valid for: EN
QuadTree QuadType	Valid for: G; Default: `NormalQT`; Parsing Default: `NormalQT`; Notes: sfdp only
Quantum Double	Valid for: G; Default: `0.0`; Minimum: `0.0`
Rank RankType	Valid for: S; Notes: dot only
RankDir RankDir	Valid for: G; Default: `TB`; Notes: dot only
Ranksep Double	Valid for: G; Default: `0.5` (dot), `1.0` (twopi); Minimum: 0.02; Notes: twopi, dot only
Ratio Ratios	Valid for: G
Rects Rect	Valid for: N; Notes: write only
Regular Bool	Valid for: N; Default: `False`; Parsing Default: `True`
ReMinCross Bool	Valid for: G; Default: `False`; Parsing Default: `True`; Notes: dot only
RepulsiveForce Double	Valid for: G; Default: `1.0`; Minimum: `0.0`; Notes: sfdp only
Root Root	Valid for: GN; Default: `NodeName ""` (graphs), `NotCentral` (nodes); Parsing Default: `IsCentral`; Notes: circo, twopi only
Rotate Int	Valid for: G; Default: `0`
SameHead String	Valid for: E; Default: `""`; Notes: dot only
SameTail String	Valid for: E; Default: `""`; Notes: dot only
SamplePoints Int	Valid for: N; Default: `8` (output), `20` (overlap and image maps)
SearchSize Int	Valid for: G; Default: `30`; Notes: dot only
Sep DPoint	Valid for: G; Default: `+4`; Notes: not dot
Shape Shape	Valid for: N; Default: `Ellipse`
ShapeFile String	Valid for: N; Default: `""`
ShowBoxes Int	Valid for: ENG; Default: `0`; Minimum: `0`; Notes: dot only
Sides Int	Valid for: N; Default: `4`; Minimum: `0`
Size Point	Valid for: G
Skew Double	Valid for: N; Default: `0.0`; Minimum: `-100.0`
Smoothing SmoothType	Valid for: G; Default: `NoSmooth`; Notes: sfdp only
SortV Int	Valid for: GCN; Default: `0`; Minimum: `0`
Splines EdgeType	Valid for: G; Parsing Default: `SplineEdges`
Start StartType	Valid for: G; Default: `""`; Notes: fdp, neato only
Style [StyleItem]	Valid for: ENC
StyleSheet String	Valid for: G; Default: `""`; Notes: svg only
TailURL URL	Valid for: E; Default: `""`; Notes: svg, map only
TailClip Bool	Valid for: E; Default: `True`; Parsing Default: `True`
TailLabel Label	Valid for: E; Default: `""`
TailPort PortPos	Valid for: E; Default: center
TailTarget EscString	Valid for: E; Default: none; Notes: svg, map only
TailTooltip EscString	Valid for: E; Default: `""`; Notes: svg, cmap only
Target EscString	Valid for: ENGC; Default: none; Notes: svg, map only
Tooltip EscString	Valid for: NEC; Default: `""`; Notes: svg, cmap only
TrueColor Bool	Valid for: G; Parsing Default: `True`; Notes: bitmap output only
Vertices [Point]	Valid for: N; Notes: write only
ViewPort ViewPort	Valid for: G; Default: none
VoroMargin Double	Valid for: G; Default: `0.05`; Minimum: `0.0`; Notes: not dot
Weight Double	Valid for: E; Default: `1.0`; Minimum: `0` (dot), `1` (neato,fdp,sfdp)
Width Double	Valid for: N; Default: `0.75`; Minimum: `0.01`
Z Double	Valid for: N; Default: `0.0`; Minimum: `-MAXFLOAT`, `-1000`

Instances

Eq Attribute
Read Attribute
Show Attribute
ParseDot Attribute
PrintDot Attribute

type Attributes = [Attribute]Source

Validity functions on `Attribute` values.

usedByGraphs :: Attribute -> Bool Source

Determine if this Attribute is valid for use with Graphs.

usedBySubGraphs :: Attribute -> Bool Source

Determine if this Attribute is valid for use with SubGraphs.

usedByClusters :: Attribute -> Bool Source

Determine if this Attribute is valid for use with Clusters.

usedByNodes :: Attribute -> Bool Source

Determine if this Attribute is valid for use with Nodes.

usedByEdges :: Attribute -> Bool Source

Determine if this Attribute is valid for use with Edges.

Value types for `Attribute`s.

type EscString = String Source

Some Attributes (mainly label-like ones) take a String argument that allows for extra escape codes. This library doesn't do any extra checks or special parsing for these escape codes, but usage of EscString rather than String indicates that the GraphViz tools will recognise these extra escape codes for these Attributes.

The extra escape codes include (note that these are all Strings):

\N: Replace with the name of the node (for Node Attributes).
\G: Replace with the name of the graph (for Node Attributes) or the name of the graph or cluster, whichever is applicable (for Graph, Cluster and Edge Attributes).
\E: Replace with the name of the edge, formed by the two adjoining nodes and the edge type (for Edge Attributes).
\T: Replace with the name of the tail node (for Edge Attributes).
\H: Replace with the name of the head node (for Edge Attributes).
\L: Replace with the object's label (for all Attributes).

Also, if the Attribute in question is Label, HeadLabel or TailLabel, then \n, \l and \r split the label into lines centered, left-justified and right-justified respectively.

newtype URL Source

Constructors

UStr
Fields urlString :: EscString

Instances

Eq URL
Read URL
Show URL
ParseDot URL
PrintDot URL

newtype ArrowType Source

Dot has a basic grammar of arrow shapes which allows usage of up to 1,544,761 different shapes from 9 different basic ArrowShapes. Note that whilst an explicit list is used in the definition of ArrowType, there must be at least one tuple and a maximum of 4 (since that is what is required by Dot). For more information, see: http://graphviz.org/doc/info/arrows.html

The 19 basic arrows shown on the overall attributes page have been defined below as a convenience. Parsing of the 5 backward-compatible special cases is also supported.

Constructors

AType [(ArrowModifier, ArrowShape)]

Instances

Eq ArrowType
Read ArrowType
Show ArrowType
ParseDot ArrowType
PrintDot ArrowType

data AspectType Source

Constructors

RatioOnly Double
RatioPassCount Double Int

Instances

Eq AspectType
Read AspectType
Show AspectType
ParseDot AspectType
PrintDot AspectType

data Rect Source

Constructors

Rect Point Point

Instances

Eq Rect
Read Rect
Show Rect
ParseDot Rect
PrintDot Rect

data Color Source

Constructors

RGB
Fields red :: Word8 green :: Word8 blue :: Word8
RGBA
Fields red :: Word8 green :: Word8 blue :: Word8 alpha :: Word8
HSV
Fields hue :: Double saturation :: Double value :: Double
ColorName String

Instances

Eq Color
Read Color
Show Color
ParseDot Color
PrintDot Color

data ClusterMode Source

Constructors

Local
Global
NoCluster

Instances

Eq ClusterMode
Read ClusterMode
Show ClusterMode
ParseDot ClusterMode
PrintDot ClusterMode

data DirType Source

Constructors

Forward
Back
Both
NoDir

Instances

Eq DirType
Read DirType
Show DirType
ParseDot DirType
PrintDot DirType

data DEConstraints Source

Only when mode == IpSep.

Constructors

EdgeConstraints
NoConstraints
HierConstraints

Instances

Eq DEConstraints
Read DEConstraints
Show DEConstraints
ParseDot DEConstraints
PrintDot DEConstraints

data DPoint Source

Either a Double or a Point.

Constructors

DVal Double
PVal Point

Instances

Eq DPoint
Read DPoint
Show DPoint
ParseDot DPoint
PrintDot DPoint

data ModeType Source

Constructors

Major
KK
Hier
IpSep

Instances

Eq ModeType
Read ModeType
Show ModeType
ParseDot ModeType
PrintDot ModeType

data Model Source

Constructors

ShortPath
SubSet
Circuit

Instances

Eq Model
Read Model
Show Model
ParseDot Model
PrintDot Model

data Label Source

Constructors

StrLabel EscString
URLLabel URL

Instances

Eq Label
Read Label
Show Label
ParseDot Label
PrintDot Label

data Point Source

Constructors

Point Int Int
PointD Double Double

Instances

Eq Point
Read Point
Show Point
ParseDot Point
PrintDot Point

data Overlap Source

Constructors

KeepOverlaps
RemoveOverlaps
ScaleOverlaps
ScaleXYOverlaps
PrismOverlap (Maybe Int)	Only when sfdp is available, `Int` is non-negative
CompressOverlap
VpscOverlap
IpsepOverlap	Only when `mode == IpSep`

Instances

Eq Overlap
Read Overlap
Show Overlap
ParseDot Overlap
PrintDot Overlap

data LayerRange Source

Constructors

LRID LayerID
LRS LayerID String LayerID

Instances

Eq LayerRange
Read LayerRange
Show LayerRange
ParseDot LayerRange
PrintDot LayerRange

data LayerID Source

Constructors

AllLayers
LRInt Int
LRName String

Instances

Eq LayerID
Read LayerID
Show LayerID
ParseDot LayerID
PrintDot LayerID

data LayerList Source

The list represent (Separator, Name)

Constructors

LL String [(String, String)]

Instances

Eq LayerList
Read LayerList
Show LayerList
ParseDot LayerList
PrintDot LayerList

data OutputMode Source

Constructors

BreadthFirst
NodesFirst
EdgesFirst

Instances

Eq OutputMode
Read OutputMode
Show OutputMode
ParseDot OutputMode
PrintDot OutputMode

data Pack Source

Constructors

DoPack
DontPack
PackMargin Int	If non-negative, then packs; otherwise doesn't.

Instances

Eq Pack
Read Pack
Show Pack
ParseDot Pack
PrintDot Pack

data PackMode Source

Constructors

PackNode
PackClust
PackGraph
PackArray Bool Bool (Maybe Int)	Sort by cols, sort by user, number of rows/cols

Instances

Eq PackMode
Read PackMode
Show PackMode
ParseDot PackMode
PrintDot PackMode

data Pos Source

Constructors

PointPos Point
SplinePos [Spline]

Instances

Eq Pos
Read Pos
Show Pos
ParseDot Pos
PrintDot Pos

data EdgeType Source

Controls how (and if) edges are represented.

Constructors

SplineEdges
LineEdges
NoEdges
PolyLine
CompoundEdge	fdp only

Instances

Eq EdgeType
Read EdgeType
Show EdgeType
ParseDot EdgeType
PrintDot EdgeType

data PageDir Source

Upper-case first character is major order; lower-case second character is minor order.

Constructors

Bl
Br
Tl
Tr
Rb
Rt
Lb
Lt

Instances

Eq PageDir
Read PageDir
Show PageDir
ParseDot PageDir
PrintDot PageDir

data Spline Source

The number of points in the list must be equivalent to 1 mod 3; note that this is not checked.

Constructors

Spline (Maybe Point) (Maybe Point) [Point]

Instances

Eq Spline
Read Spline
Show Spline
ParseDot Spline
PrintDot Spline

data QuadType Source

Constructors

NormalQT
FastQT
NoQT

Instances

Eq QuadType
Read QuadType
Show QuadType
ParseDot QuadType
PrintDot QuadType

data Root Source

Specify the root node either as a Node attribute or a Graph attribute.

Constructors

IsCentral	For Nodes only
NotCentral	For Nodes only
NodeName String	For Graphs only

Instances

Eq Root
Read Root
Show Root
ParseDot Root
PrintDot Root

data RankType Source

Constructors

SameRank
MinRank
SourceRank
MaxRank
SinkRank

Instances

Eq RankType
Read RankType
Show RankType
ParseDot RankType
PrintDot RankType

data RankDir Source

Constructors

FromTop
FromLeft
FromBottom
FromRight

Instances

Eq RankDir
Read RankDir
Show RankDir
ParseDot RankDir
PrintDot RankDir

data Shape Source

Constructors

BoxShape	Has synonyms of rect and rectangle.
Polygon
Ellipse
Circle
PointShape
Egg
Triangle
PlainText	Has synonym of none.
DiamondShape
Trapezium
Parallelogram
House
Pentagon
Hexagon
Septagon
Octagon
DoubleCircle
DoubleOctagon
TripleOctagon
InvTriangle
InvTrapezium
InvHouse
MDiamond
MSquare
MCircle
Note
Tab
Folder
Box3D
Component

Instances

Eq Shape
Read Shape
Show Shape
ParseDot Shape
PrintDot Shape

data SmoothType Source

Constructors

NoSmooth
AvgDist
GraphDist
PowerDist
RNG
Spring
TriangleSmooth

Instances

Eq SmoothType
Read SmoothType
Show SmoothType
ParseDot SmoothType
PrintDot SmoothType

data StartType Source

It is assumed that at least one of these is Just{}.

Constructors

StartStyle STStyle
StartSeed Int
StartStyleSeed STStyle Int

Instances

Eq StartType
Read StartType
Show StartType
ParseDot StartType
PrintDot StartType

data STStyle Source

Constructors

RegularStyle
SelfStyle
RandomStyle

Instances

Eq STStyle
Read STStyle
Show STStyle
ParseDot STStyle
PrintDot STStyle

data StyleItem Source

Constructors

SItem StyleName [String]

Instances

Eq StyleItem
Read StyleItem
Show StyleItem
ParseDot StyleItem
PrintDot StyleItem

data StyleName Source

Constructors

Dashed	Nodes and Edges
Dotted	Nodes and Edges
Solid	Nodes and Edges
Bold	Nodes and Edges
Invisible	Nodes and Edges
Filled	Nodes and Clusters
Diagonals	Nodes only
Rounded	Nodes and Clusters
DD String	Device Dependent

Instances

Eq StyleName
Read StyleName
Show StyleName
ParseDot StyleName
PrintDot StyleName

newtype PortPos Source

Constructors

PP CompassPoint

Instances

Eq PortPos
Read PortPos
Show PortPos
ParseDot PortPos
PrintDot PortPos

data CompassPoint Source

Constructors

North
NorthEast
East
SouthEast
South
SouthWest
West
NorthWest
CenterPoint
NoCP

Instances

Eq CompassPoint
Read CompassPoint
Show CompassPoint
ParseDot CompassPoint
PrintDot CompassPoint

data ViewPort Source

Constructors

VP
Fields wVal :: Double hVal :: Double zVal :: Double focus :: Maybe FocusType

Instances

Eq ViewPort
Read ViewPort
Show ViewPort
ParseDot ViewPort
PrintDot ViewPort

data FocusType Source

Constructors

XY Point
NodeFocus String

Instances

Eq FocusType
Read FocusType
Show FocusType
ParseDot FocusType
PrintDot FocusType

data VerticalPlacement Source

Constructors

VTop
VCenter	Only valid for Nodes.
VBottom

Instances

Eq VerticalPlacement
Read VerticalPlacement
Show VerticalPlacement
ParseDot VerticalPlacement
PrintDot VerticalPlacement

data ScaleType Source

Constructors

UniformScale
NoScale
FillWidth
FillHeight
FillBoth

Instances

Eq ScaleType
Read ScaleType
Show ScaleType
ParseDot ScaleType
PrintDot ScaleType

data Justification Source

Constructors

JLeft
JRight
JCenter

Instances

Eq Justification
Read Justification
Show Justification
ParseDot Justification
PrintDot Justification

data Ratios Source

Constructors

AspectRatio Double
FillRatio
CompressRatio
ExpandRatio
AutoRatio

Instances

Eq Ratios
Read Ratios
Show Ratios
ParseDot Ratios
PrintDot Ratios

Types representing the Dot grammar for `ArrowType`.

data ArrowShape Source

Constructors

Box
Crow
Diamond
DotArrow
Inv
NoArrow
Normal
Tee
Vee

Instances

Eq ArrowShape
Read ArrowShape
Show ArrowShape
ParseDot ArrowShape
PrintDot ArrowShape

data ArrowModifier Source

What modifications to apply to an ArrowShape.

Constructors

ArrMod
Fields arrowFill :: ArrowFill arrowSide :: ArrowSide

Instances

Eq ArrowModifier
Read ArrowModifier
Show ArrowModifier
ParseDot ArrowModifier
PrintDot ArrowModifier

data ArrowFill Source

Constructors

OpenArrow
FilledArrow

Instances

Eq ArrowFill
Read ArrowFill
Show ArrowFill
ParseDot ArrowFill
PrintDot ArrowFill

data ArrowSide Source

Represents which side (when looking towards the node the arrow is pointing to) is drawn.

Constructors

LeftSide
RightSide
BothSides

Instances

Eq ArrowSide
Read ArrowSide
Show ArrowSide
ParseDot ArrowSide
PrintDot ArrowSide

Default `ArrowType` aliases.

`ArrowModifier` instances

noMods :: ArrowModifier Source

Apply no modifications to an ArrowShape.

openMod :: ArrowModifier Source

OpenArrow and BothSides

The actual Dot attributes.

Validity functions on Attribute values.

Value types for Attributes.

Types representing the Dot grammar for ArrowType.

Default ArrowType aliases.

The 9 primitive ArrowShapes.

5 derived Arrows.

5 supported cases for backwards compatibility

ArrowModifier instances

Validity functions on `Attribute` values.

Value types for `Attribute`s.

Types representing the Dot grammar for `ArrowType`.

Default `ArrowType` aliases.

The 9 primitive `ArrowShape`s.

`ArrowModifier` instances