{-# LANGUAGE OverloadedStrings #-}

{-|
Module : VizViews
Description : Defines the some different look of graphs for the module graphviz.
Copyright : (c) Hans-Jürgen Guth, 2014
License : LGPL
Maintainer : juergen.software@freea2a.de
Stability : experimental

Here is the look of the graphs from graphviz defined.
Feel free to add your own. For more information to the source code,
refer to the docu of the module graphviz.
-}

module VizViews (recordView1, defaultView) where

import TestExplode.TestExplode

import Data.Graph.Inductive.Graph
import Data.Graph.Inductive.PatriciaTree (Gr)
import Data.GraphViz
import Data.GraphViz.Attributes.Complete
import qualified Data.Text.Lazy as L


-- | From the docu of GraphViz. Only numbers in the nodes.
-- But as a test it works.
defaultView :: (Graph gr) => gr nl el -> DotGraph Node
defaultView = graphToDot nonClusteredParams

-- | My own favorite view of the graph
recordView1 :: GraphvizParams Node (Maybe (CasepartInternal cnf locals), Maybe TGDocuInfo) 
                                   () 
                                   () 
                                   (Maybe (CasepartInternal cnf locals), Maybe TGDocuInfo)
recordView1 = nonClusteredParams { fmtNode = fmtNodeMy }

fmtNodeMy :: (Node, (Maybe (CasepartInternal cnf locals), Maybe TGDocuInfo)) 
              -> Attributes
fmtNodeMy (_, mcp) = case mcp of
              (Just cp, _) -> 
                 let bgcolor = if cpTypeI cp == Mark
                               then LightGoldenrod2 --YellowGreen
                               else
                                 if condDescI cp == ""
                                 then  LightGoldenrodYellow 
                                 else Yellow 
                 in              
                 let attrs = [  shape Record
                              , style filled]
                 in 
                  if condDescI cp ==""
                  then   [Label (RecordLabel [FlipFields[ FieldLabel (shortDescI cp)
                                                  ]
                                       ]
                           ), fillColor bgcolor] 
                          ++ attrs
                  else   [Label (RecordLabel [FlipFields[  FieldLabel (condDescI cp)
                                                   , FieldLabel (shortDescI cp)
                                                  ]
                                       ]
                           ), fillColor bgcolor] 
                          ++ attrs
              (Nothing, Nothing) -> 
                [ styles [filled, dotted]
                  , fillColor LightGray
                  , toLabel L.empty]
              (Nothing, Just di) ->  -- testgraph that is not expanded
                [shape Record,
                 styles [bold, filled],
                 fillColor Orange,
                 fontColor Blue,
                 FontName (L.pack("Times-Italic")),
                 -- change ".svg" if you use other extensions for the
                 -- picture of the graph
                 -- change "../subgraphs/", if you use another
                 -- subdirectory for the subgraphs
                 URL (L.pack("../subgraphs/" ++ name di ++ ".svg")), 
                 Label (RecordLabel [FlipFields[ FieldLabel (L.pack ((name di) 
                                                             ++ "\n" 
                                                             ++ (descForNode di) ))
                                                ]
                                     ])]