1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
if not modules then modules = { } end modules ['meta-imp-txt'] = {
version = 1.001,
comment = "companion to meta-imp-txt.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
local setmetatableindex = table.setmetatableindex
local settings_to_array = utilities.parsers.settings_to_array
local texget = tex.get
local texset = tex.set
local texgetcount = tex.getcount
local texgetglue = tex.getglue
local expandmacro = token.expandmacro or token.expand_macro -- todo
local implement = interfaces.implement
local scan = mp.scan
local scannumeric = scan.numeric
local scaninteger = scan.integer
local scanboolean = scan.boolean
local scanstring = scan.string
local bpfactor = number.dimenfactors.bp
local context = context
local parshapes = { }
local properties = { }
metapost.registerscript("setparshapeproperty", function()
local k = scanstring()
if k == "line" then
local entry = properties.shape[scannumeric()]
local indent = scannumeric() / bpfactor
local width = scannumeric() / bpfactor
entry[1] = indent
entry[2] = width
elseif k == "lines" then
properties.lines = scaninteger()
properties.shape = setmetatableindex(function(t,k)
local v = { 0, properties.width or 0 }
t[k] = v
return v
end)
elseif k == "first" then
properties[k] = scanboolean()
elseif k == "inspect" then
inspect(properties)
else
properties[k] = scannumeric() / bpfactor
end
end)
implement {
name = "setparagraphmetashape",
public = true,
protected = true,
arguments = { "optional", "optional" }, -- array
actions = function(list,options)
if list and list ~= "" then
list = settings_to_array(list) -- array
options = settings_to_array(options) -- array
if #list > 0 then
parshapes = { }
properties = { }
for i=1,#list do
properties = { }
parshapes[i] = properties
expandmacro("spac_shapes_calculate","{"..list[i].."}")
end
local t, n = { }, 0
for i=1,#parshapes do
local p = parshapes[i]
local s = p.shape
if s then
for i=1,(p.lines or #s) do
n = n + 1
t[n] = s[i]
end
end
end
if n > 0 then
for i=1,#options do
t[options[i]] = true
end
texset("parshape",t)
end
end
end
end
}
-- implement {
-- name = "resetparagraphmetashape",
-- public = true,
-- protected = true,
-- actions = function(list)
-- parshapes = { }
-- properties = { }
-- end
-- }
implement {
name = "getshapeparameter",
public = true,
arguments = "string",
actions = function(name)
local index = texgetcount("shapetextindex")
local value = parshapes[index][name]
if type(value) == "boolean" then
value = value and 1 or 0
end
context(value or 0) -- so the first check, for "lines" is always ok
end
}
-- Another experiment: continuing parshapes with alternative definitions:
--
-- left d | right d | left d right d | both d | left d hsize d |
-- copy n | reset | repeat | done
do
local scanners = tokens.scanners
local scanword = scanners.word
local scandimen = scanners.dimen
local scanstring = scanners.string
local scancardinal = scanners.cardinal
implement {
name = "setparagraphshape",
protected = true,
actions = function()
local t = { }
local n = 0
local h = texget("hsize")
local a = 0
while true do
local key = scanword()
::AGAIN::
if key == "left" then
local l = scandimen()
key = scanword()
if key == "right" then
n = n + 1 ; t[n] = { l, a + h - l - scandimen() }
elseif key == "hsize" then
n = n + 1 ; t[n] = { l, a + scandimen() }
else
n = n + 1 ; t[n] = { l, a + h }
goto AGAIN
end
elseif key == "right" then
n = n + 1 ; t[n] = { 0, a + h - scandimen() }
elseif key == "both" then
local b = scandimen()
n = n + 1 ; t[n] = { b, a + h - b - b }
elseif key == "copy" then
local c = scancardinal()
for i=1,c do
local m = n + 1
t[m] = t[n]
n = m
end
elseif key == "done" then
-- in case the user ended with "done"
scanword()
break
elseif key == "metapost" then
local list = settings_to_array(scanstring()) -- array
properties = { }
parshapes = { }
for i=1,#list do
properties = { }
parshapes[i] = properties
expandmacro("spac_shapes_calculate","{"..list[i].."}")
end
for i=1,#parshapes do
local p = parshapes[i]
local s = p.shape
if s then
for i=1,(p.lines or #s) do
local si = s[i]
n = n + 1 ; t[n] = { si[1], a + si[2] }
end
end
end
elseif key == "repeat" then
t["repeat"] = true
elseif key == "delete" then
local c = scancardinal()
for i=1,c do
if n > 0 then
t[n] = nil
n = n - 1
else
break
end
end
elseif key == "reset" then
n = n + 1 ; t[n] = { 0, a + h }
break
elseif key == "absolute" then
local s = scanword()
local l = texgetglue("leftskip")
local r = texgetglue("rightskip")
if s == "left" then
a = l
elseif s == "right" then
a = r
elseif s == "both" then
a = l + r
else
a = l + r
goto AGAIN
end
elseif key == "inspect" then
inspect(t)
else
logs.report("system","bad key %a in paragraphshape",key)
break
end
end
texset("parshape",t)
end,
}
local NC = context.NC
local NR = context.NR
local VL = context.VL
implement {
name = "showparagraphshape",
protected = true,
public = true,
actions = function()
local p = texget("parshape")
if p then
-- only english interface (for now)
context.inleftmargin(
{
align = "flushright",
strut = "no",
width = "0pt",
-- voffset = "-\\lineheight"
}, function()
context.starttabulate {
before = "",
after = "",
unit = "2pt",
rulethickness = ".1pt",
format = "|rb{\\smallinfofont}|lb{\\smallinfofont}|"
}
for i=1,#p do
NC() context("%P",p[i][1])
VL() context("%P",p[i][2])
NC() NR()
end
context.stoptabulate()
end
)
end
end
}
end
|