1if not modules then modules = { } end modules ['meta-imp-txt'] = {
2 version = 1.001,
3 comment = "companion to meta-imp-txt.mkiv",
4 author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
5 copyright = "PRAGMA ADE / ConTeXt Development Team",
6 license = "see context related readme files",
7}
8
9local setmetatableindex = table.setmetatableindex
10
11local texset = tex.set
12
13local scan = mp.scan
14local scannumeric = scan.numeric
15local scaninteger = scan.integer
16local scanboolean = scan.boolean
17local scanstring = scan.string
18
19local expandmacro = token.expandmacro
20
21local bpfactor = number.dimenfactors.bp
22
23local metapost = metapost
24metapost.parshapes = { }
25
26local parshapes = { }
27local properties = { }
28
29
30
31function metapost.parshapes.reset()
32 parshapes = { }
33 properties = { }
34end
35
36function metapost.parshapes.next()
37 properties = { }
38 parshapes[#parshapes+1] = properties
39end
40
41function metapost.parshapes.inspect()
42 inspect(parshapes)
43end
44
45function metapost.parshapes.getshape(n)
46 return (parshapes and parshapes[n]) or parshapes or nil
47end
48
49function metapost.parshapes.get(index,name)
50 local v = parshapes[index][name]
51 if type(v) == "boolean" then
52 context(v and 1 or 0)
53 else
54 context(v)
55 end
56end
57
58function metapost.parshapes.wholeshape()
59 local t, n = { }, 0
60 for i=1,#parshapes do
61 local s = parshapes[i].shape
62 if s then
63 for i=1,#s do
64 n = n + 1
65 t[n] = s[i]
66 end
67 end
68 end
69 if n > 0 then
70 texset("parshape",t)
71 end
72end
73
74metapost.registerscript("setparshapeproperty", function()
75 local k = scanstring()
76 if k == "line" then
77 local entry = properties.shape[scannumeric()]
78 local indent = scannumeric() / bpfactor
79 local width = scannumeric() / bpfactor
80 entry[1] = indent
81 entry[2] = width
82 elseif k == "lines" then
83 properties.lines = scaninteger()
84 properties.shape = setmetatableindex(function(t,k)
85 local v = { 0, properties.width or 0 }
86 t[k] = v
87 return v
88 end)
89 elseif k == "first" then
90 properties[k] = scanboolean()
91 elseif k == "inspect" then
92 inspect(properties)
93 else
94 properties[k] = scannumeric() / bpfactor
95 end
96end)
97
98interfaces.implement {
99 name = "setparagraphmetashape",
100 public = true,
101 protected = true,
102 arguments = "optional",
103 actions = function(list)
104 if list and list ~= "" then
105 list = utilities.parsers.settings_to_array(list)
106 if #list > 0 then
107 metapost.parshapes.reset()
108 for i=1,#list do
109 metapost.parshapes.next()
110 expandmacro("spac_shapes_calculate","{"..list[i].."}")
111 end
112 metapost.parshapes.wholeshape()
113 end
114 end
115 end
116}
117 |
