1if not modules then modules = { } end modules['s-fonts-shapes'] = {
2 version = 1.001,
3 comment = "companion to s-fonts-shapes.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
9moduledata.fonts = moduledata.fonts or { }
10moduledata.fonts.shapes = moduledata.fonts.shapes or { }
11
12local fontdata = fonts.hashes.identifiers
13
14local context = context
15local NC, NR = context.NC, context.NR
16local space, dontleavehmode, glyph, getvalue = context.space, context.dontleavehmode, context.glyph, context.getvalue
17local formatters = string.formatters
18
19function char(id,k)
20 dontleavehmode()
21 glyph(id,k)
22end
23
24local function special(id,specials)
25 if specials and #specials > 1 then
26 context("%s:",specials[1])
27 if #specials > 5 then
28 space() char(id,specials[2])
29 space() char(id,specials[3])
30 space() context("...")
31 space() char(id,specials[#specials-1])
32 space() char(id,specials[#specials])
33 else
34 for i=2,#specials do
35 space() char(id,specials[i])
36 end
37 end
38 end
39end
40
41function moduledata.fonts.shapes.showlist(specification)
42 specification = interfaces.checkedspecification(specification)
43 local id, cs = fonts.definers.internal(specification,"<module:fonts:shapes:font>")
44 local chrs = fontdata[id].characters
45 context.begingroup()
46 context.tt()
47 context.starttabulate { "|l|c|c|c|c|l|l|" }
48 context.FL()
49 NC() context.bold("unicode")
50 NC() context.bold("glyph")
51 NC() context.bold("shape")
52 NC() context.bold("lower")
53 NC() context.bold("upper")
54 NC() context.bold("specials")
55 NC() context.bold("description")
56 NC() NR()
57 context.TL()
58 for k, v in next, characters.data do
59 if chrs[k] then
60 NC() context("0x%05X",k)
61 NC() char(id,k)
62 NC() char(id,v.shcode)
63 NC() char(id,v.lccode or k)
64 NC() char(id,v.uccode or k)
65 NC() special(id,v.specials)
66 NC() context.tx(v.description)
67 NC() NR()
68 end
69 end
70 context.stoptabulate()
71 context.endgroup()
72end
73
74local descriptions = nil
75local characters = nil
76
77
78local function showglyphshape(specification)
79
80 local specification = interfaces.checkedspecification(specification)
81 local id, cs = fonts.definers.internal(specification,"<module:fonts:shapes:font>")
82 local tfmdata = fontdata[id]
83 local characters = tfmdata.characters
84 local descriptions = tfmdata.descriptions
85 local parameters = tfmdata.parameters
86 local anchors = fonts.helpers.collectanchors(tfmdata)
87
88 local function showonecharacter(unicode)
89 local c = characters [unicode]
90 local d = descriptions[unicode]
91 if c and d then
92 local factor = (parameters.size/parameters.units)*((7200/7227)/65536)
93 local llx, lly, urx, ury = unpack(d.boundingbox)
94 llx, lly, urx, ury = llx*factor, lly*factor, urx*factor, ury*factor
95 local width = (d.width or 0)*factor
96 context.start()
97 context.dontleavehmode()
98 context.obeyMPboxdepth()
99 context.startMPcode()
100 context("numeric lw ; lw := .125bp ;")
101 context("pickup pencircle scaled lw ;")
102 if width < 0.01 then
103
104 context('picture p ; p := textext.drt("\\hskip5sp\\getuvalue{%s}\\gray\\char%s"); draw p ;',cs,unicode)
105 else
106 context('picture p ; p := textext.drt("\\getuvalue{%s}\\gray\\char%s"); draw p ;',cs,unicode)
107 end
108 context('draw (%s,%s)--(%s,%s)--(%s,%s)--(%s,%s)--cycle withcolor green ;',llx,lly,urx,lly,urx,ury,llx,ury)
109 context('draw (%s,%s)--(%s,%s) withcolor green ;',llx,0,urx,0)
110 context('draw boundingbox p withcolor .2white withpen pencircle scaled .065bp ;')
111 context("defaultscale := 0.05 ; ")
112
113 local slant = {
114 function(v,dx,dy,txt,xsign,ysign,loc,labloc)
115 local n = #v
116 if n > 0 then
117 local l = { }
118 for i=1,n do
119 local c = v[i]
120 local h = c.height or 0
121 local k = c.kern or 0
122 l[i] = formatters["((%s,%s) shifted (%s,%s))"](xsign*k*factor,ysign*h*factor,dx,dy)
123 end
124 context("draw ((%s,%s) shifted (%s,%s))--%s dashed (evenly scaled 1/16) withcolor .5white;", xsign*v[1].kern*factor,lly,dx,dy,l[1])
125 context("draw laddered (%..t) withcolor .5white ;",l)
126 context("draw ((%s,%s) shifted (%s,%s))--%s dashed (evenly scaled 1/16) withcolor .5white;", xsign*v[#v].kern*factor,ury,dx,dy,l[#l])
127 for i=1,n do
128 context("draw %s withcolor blue withpen pencircle scaled 2lw ;",l[i])
129 end
130 end
131 end,
132 function(v,dx,dy,txt,xsign,ysign,loc,labloc)
133 local n = #v
134 if n > 0 then
135 local l = { }
136 for i=1,n do
137 local c = v[i]
138 local h = c.height or 0
139 local k = c.kern or 0
140 l[i] = formatters["((%s,%s) shifted (%s,%s))"](xsign*k*factor,ysign*h*factor,dx,dy)
141 end
142 if loc == "top" then
143 context('label.%s("\\type{%s}",%s shifted (0,-1bp)) ;',loc,txt,l[n])
144 else
145 context('label.%s("\\type{%s}",%s shifted (0,2bp)) ;',loc,txt,l[1])
146 end
147 for i=1,n do
148 local c = v[i]
149 local h = c.height or 0
150 local k = c.kern or 0
151 context('label.top("(%s,%s)",%s shifted (0,-2bp));',k,h,l[i])
152 end
153 end
154 end,
155 }
156
157 local math = d.math
158 if math then
159 local kerns = math.kerns
160 if kerns then
161 for i=1,#slant do
162 local s = slant[i]
163 for k, v in next, kerns do
164 if k == "topright" then
165
166 s(v,width,0,k,1,1,"top","ulft")
167 elseif k == "bottomright" then
168 s(v,width,0,k,1,1,"bot","lrt")
169 elseif k == "topleft" then
170 s(v,0,0,k,-1,1,"top","ulft")
171 elseif k == "bottomleft" then
172 s(v,0,0,k,-1,1,"bot","lrt")
173 end
174 end
175 end
176 end
177 local accent = math.accent
178 if accent and accent ~= 0 then
179 local a = accent * factor
180 context('draw (%s,%s+1bp)--(%s,%s-1bp) withcolor blue;',a,ury,a,ury)
181 context('label.bot("\\type{%s}",(%s,%s+1bp));',"accent",a,ury)
182 context('label.top("%s",(%s,%s-1bp));',math.accent,a,ury)
183 end
184 end
185
186 local anchordata = anchors[unicode]
187 if anchordata then
188 local function show(txt,list)
189 if list then
190 for i=1,#list do
191 local li = list[i]
192 local x, y = li[1], li[2]
193 local xx, yy = x*factor, y*factor
194 context("draw (%s,%s) withcolor blue withpen pencircle scaled 2lw ;",xx,yy)
195 context('label.top("\\infofont %s",(%s,%s-2.75bp)) ;',txt .. i,xx,yy)
196 context('label.bot("\\infofont (%s,%s)",(%s,%s+2.75bp)) ;',x,y,xx,yy)
197 end
198 end
199 end
200
201 show("b",anchordata.base)
202 show("m",anchordata.mark)
203 show("l",anchordata.ligature)
204 show("e",anchordata.entry)
205 show("x",anchordata.exit)
206 end
207
208 local italic = d.italic
209 if italic and italic ~= 0 then
210 local i = italic * factor
211 context('draw (%s,%s-1bp)--(%s,%s-0.5bp) withcolor blue ;',width,ury,width,ury)
212 context('draw (%s,%s-1bp)--(%s,%s-0.5bp) withcolor blue ;',width+i,ury,width+i,ury)
213 context('draw (%s,%s-1bp)--(%s,%s-1bp) withcolor blue ;',width,ury,width+i,ury)
214 context('label.lft("\\type{%s}",(%s+2bp,%s-1bp));',"italic",width,ury)
215 context('label.rt("%s",(%s-2bp,%s-1bp));',italic,width+i,ury)
216 end
217 context('draw origin withcolor red withpen pencircle scaled 2lw;')
218 context("setbounds currentpicture to boundingbox currentpicture enlarged 1bp ;")
219 context("currentpicture := currentpicture scaled 8 ;")
220 context.stopMPcode()
221 context.stop()
222 end
223 end
224
225 local unicode = tonumber(specification.character) or
226 fonts.helpers.nametoslot(specification.character)
227
228 if unicode then
229 showonecharacter(unicode)
230 else
231 context.modulefontsstartshowglyphshapes()
232 for unicode, description in fonts.iterators.descriptions(tfmdata) do
233 if unicode >= 0x110000 then
234 break
235 end
236 context.modulefontsstartshowglyphshape(unicode,description.name or "",description.index or 0)
237 showonecharacter(unicode)
238 context.modulefontsstopshowglyphshape()
239 end
240 context.modulefontsstopshowglyphshapes()
241 end
242
243end
244
245moduledata.fonts.shapes.showglyphshape = showglyphshape
246moduledata.fonts.shapes.showallglypshapes = showglyphshape
247
248function moduledata.fonts.shapes.showlastglyphshapefield(unicode,name)
249 if not descriptions then
250
251 elseif name == "unicode" then
252 context("U+%05X",descriptions.unicode)
253 else
254 local d = descriptions[name]
255 if d then
256 context(d)
257 end
258 end
259end
260 |