Module Graph.XDot

Reads layout information from xdot ASTs

type pos = float * float

2D coordinates

type bounding_box = pos * pos

upper-left and bottom-right corners

type node_layout = {
n_name : string;

Dot label

n_pos : pos;

Center position

n_bbox : bounding_box;

Bounding box

n_draw : XDotDraw.operation list;

Shape drawing

n_ldraw : XDotDraw.operation list;

Label drawing

}

Each node has at least a position and a bounding box.

type cluster_layout = {
c_pos : pos;
c_bbox : bounding_box;
c_draw : XDotDraw.operation list;
c_ldraw : XDotDraw.operation list;
}
type edge_layout = {
e_draw : XDotDraw.operation list;

Shapes and curves

e_ldraw : XDotDraw.operation list;

Label drawing

e_hdraw : XDotDraw.operation list;

Head arrowhead drawing

e_tdraw : XDotDraw.operation list;

Tail arrowhead drawing

e_hldraw : XDotDraw.operation list;

Head label drawing

e_tldraw : XDotDraw.operation list;

Tail label drawing

}
val mk_node_layout : name:string -> pos:pos -> bbox:bounding_box -> draw:XDotDraw.operation list -> ldraw:XDotDraw.operation list -> node_layout

Creates a node layout

val mk_cluster_layout : pos:pos -> bbox:bounding_box -> draw:XDotDraw.operation list -> ldraw:XDotDraw.operation list -> cluster_layout

Creates a cluster layout

val mk_edge_layout : draw:XDotDraw.operation list -> ldraw:XDotDraw.operation list -> hdraw:XDotDraw.operation list -> tdraw:XDotDraw.operation list -> hldraw:XDotDraw.operation list -> tldraw:XDotDraw.operation list -> edge_layout

Creates an edge layout

exception ParseError of string
module Make : functor (G : Graphviz.GraphWithDotAttrs) -> sig ... end

Instantiates a module which creates graph layouts from xdot files

val bounding_box : (float * float) -> float -> float -> bounding_box

bounding_box pos w h converts a bounding box of center pos, width w and height h from a Dot file to a pair of corners (lower left and upper right) in the world coordinate system.

parameter pos

position of the center of the node

parameter w

width of the node

parameter h

height of the node

val read_bounding_box : string -> bounding_box
val read_node_layout : Dot_ast.node_id -> Dot_ast.attr list -> node_layout

Reads xdot layouts from the dot ast

val read_edge_layout : Dot_ast.attr list -> edge_layout
val read_cluster_layout : Dot_ast.attr list -> cluster_layout