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if not modules then modules = { } end modules['s-fonts-shapes'] = {
version = 1.001,
comment = "companion to s-fonts-shapes.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
moduledata.fonts = moduledata.fonts or { }
moduledata.fonts.shapes = moduledata.fonts.shapes or { }
local fontdata = fonts.hashes.identifiers
local context = context
local NC, NR = context.NC, context.NR
local space, dontleavehmode, glyph, getvalue = context.space, context.dontleavehmode, context.glyph, context.getvalue
local formatters = string.formatters
function char(id,k)
dontleavehmode()
glyph(id,k)
end
local function special(id,specials)
if specials and #specials > 1 then
context("%s:",specials[1])
if #specials > 5 then
space() char(id,specials[2])
space() char(id,specials[3])
space() context("...")
space() char(id,specials[#specials-1])
space() char(id,specials[#specials])
else
for i=2,#specials do
space() char(id,specials[i])
end
end
end
end
function moduledata.fonts.shapes.showlist(specification) -- todo: ranges
specification = interfaces.checkedspecification(specification)
local id, cs = fonts.definers.internal(specification,"<module:fonts:shapes:font>")
local chrs = fontdata[id].characters
context.begingroup()
context.tt()
context.starttabulate { "|l|c|c|c|c|l|l|" }
context.FL()
NC() context.bold("unicode")
NC() context.bold("glyph")
NC() context.bold("shape")
NC() context.bold("lower")
NC() context.bold("upper")
NC() context.bold("specials")
NC() context.bold("description")
NC() NR()
context.TL()
for k, v in next, characters.data do
if chrs[k] then
NC() context("0x%05X",k)
NC() char(id,k)
NC() char(id,v.shcode)
NC() char(id,v.lccode or k)
NC() char(id,v.uccode or k)
NC() special(id,v.specials)
NC() context.tx(v.description)
NC() NR()
end
end
context.stoptabulate()
context.endgroup()
end
local descriptions = nil
local characters = nil
local function showglyphshape(specification)
--
local specification = interfaces.checkedspecification(specification)
local id, cs = fonts.definers.internal(specification,"<module:fonts:shapes:font>")
local tfmdata = fontdata[id]
local characters = tfmdata.characters
local descriptions = tfmdata.descriptions
local parameters = tfmdata.parameters
local tfmfactor = parameters.scaledpoints/10
-- inspect(tfmdata.parameters)
-- inspect(tfmdata.properties)
local anchors = fonts.helpers.collectanchors(tfmdata)
local function showonecharacter(unicode,krn,tight)
local c = characters [unicode]
local d = descriptions[unicode]
if c and d then
local factor = (parameters.size/parameters.units)*((7200/7227)/65536)
local llx, lly, urx, ury = unpack(d.boundingbox)
local height = ury
local depth = lly
llx, lly, urx, ury = llx*factor, lly*factor, urx*factor, ury*factor
local width = (d.width or 0)*factor
context.start()
context.dontleavehmode()
context.obeyMPboxdepth()
context.startMPcode()
context("numeric lw ; lw := .125bp ;")
context("pickup pencircle scaled lw ;")
if width < 0.01 then
-- catches zero width marks
context('picture p ; p := textext.drt("\\hskip5sp\\getuvalue{%s}\\gray\\char%s"); draw p ;',cs,unicode)
else
context('picture p ; p := textext.drt("\\getuvalue{%s}\\gray\\char%s"); draw p ;',cs,unicode)
end
context('draw (%s,%s)--(%s,%s)--(%s,%s)--(%s,%s)--cycle withcolor green ;',llx,lly,urx,lly,urx,ury,llx,ury)
context('draw (%s,%s)--(%s,%s) withcolor green ;',llx,0,urx,0)
context('draw boundingbox p withcolor .2white withpen pencircle scaled .065bp ;')
context("defaultscale := 0.05 ; ")
-- inefficient but non critical
function slant(v,dx,dy,txt,xsign,ysign,loc,labloc,shift)
local n = #v
if n > 0 then
local l = { }
local t = { }
for i=1,n do
local c = v[i]
local h = c.height or height or 0
local d = depth or 0
local k = c.kern or 0
if i == 1 then
l[1] = formatters["((%s,%s) shifted (%s,%s))"](xsign*k*factor,d*factor,dx,dy)
t[1] = formatters['draw textext.%s("\\tttf(%s,%s)") scaled .025 shifted %s shifted (%i/4,%i/3);'](labloc,k,d,l[1],shift,shift);
end
l[i+1] = formatters["((%s,%s) shifted (%s,%s))"](xsign*k*factor,ysign*h*factor,dx,dy)
t[i+1] = formatters['draw textext.%s("\\tttf(%s,%s)") scaled .025 shifted %s shifted (%i/4,%i/3);'](labloc,k,h,l[i+1],shift,shift);
end
context("draw laddered (%--t) withcolor .5white ;",l)
for i=1,#l do
context("draw %s withcolor blue withpen pencircle scaled 2lw ;",l[i])
context(t[i])
end
end
end
--
local math = d.math
if math then
local kerns = math.kerns
if kerns then
for k, v in next, kerns do
if k == "topright" and (krn == "all" or krn == k) then
slant(v,width,0,k,1,1,"top","lrt",1)
elseif k == "bottomright" and (krn == "all" or krn == k) then
slant(v,width,0,k,1,1,"bot","ulft",-1)
elseif k == "topleft" and (krn == "all" or krn == k) then
slant(v,0,0,k,-1,1,"top","lrt",1)
elseif k == "bottomleft" and (krn == "all" or krn == k) then
slant(v,0,0,k,-1,1,"bot","ulft",-1)
end
end
end
local accent = math.topanchor or math.accent
if accent and accent ~= 0 then
local a = accent * factor
context('draw (%s,%s+1/4)--(%s,%s-1/4) withcolor blue;',a,ury,a,ury)
context('draw textext.top("\\tttf%s") scaled .025 shifted (%s,%s+2/4);',accent,a,ury)
end
end
--
local anchordata = anchors[unicode]
if anchordata then
local function show(txt,list)
if list then
for i=1,#list do
local li = list[i]
local x, y = li[1], li[2]
local xx, yy = x*factor, y*factor
context("draw (%s,%s) withcolor blue withpen pencircle scaled 2lw ;",xx,yy)
context('label.top("\\infofont %s",(%s,%s-2.75bp)) ;',txt .. i,xx,yy)
context('label.bot("\\infofont (%s,%s)",(%s,%s+2.75bp)) ;',x,y,xx,yy)
end
end
end
--
show("b",anchordata.base)
show("m",anchordata.mark)
show("l",anchordata.ligature)
show("e",anchordata.entry)
show("x",anchordata.exit)
end
--
local italic = d.italic
if italic and italic ~= 0 then
local i = italic * factor
context('draw (%s,%s-1bp)--(%s,%s-0.5bp) withcolor blue ;',width,ury,width,ury)
context('draw (%s,%s-1bp)--(%s,%s-0.5bp) withcolor blue ;',width+i,ury,width+i,ury)
context('draw (%s,%s-1bp)--(%s,%s-1bp) withcolor blue ;',width,ury,width+i,ury)
context('label.lft("\\type{%s}",(%s+2bp,%s-1bp));',"italic",width,ury)
context('label.rt("%s",(%s-2bp,%s-1bp));',italic,width+i,ury)
end
context('draw origin withcolor red withpen pencircle scaled 2lw;')
local kern = c.topright
if kern and kern ~= 0 then
local k = kern * factor / tfmfactor
context('draw (%s,%s) withcolor "orange" withpen pencircle scaled .2 ;',width+k,ury)
end
local kern = c.bottomright
if kern and kern ~= 0 then
local k = kern * factor / tfmfactor
context('draw (%s,%s) withcolor "orange" withpen pencircle scaled .2 ;',width+k,lly)
end
local kern = c.topleft
if kern and kern ~= 0 then
local k = kern * factor / tfmfactor
context('draw (%s,%s) withcolor "orange" withpen pencircle scaled .2 ;',-k,ury)
end
local kern = c.bottomleft
if kern and kern ~= 0 then
local k = kern * factor / tfmfactor
context('draw (%s,%s) withcolor "orange" withpen pencircle scaled .2 ;',-k,lly)
end
if not tight then
context("setbounds currentpicture to boundingbox currentpicture enlarged 1bp ;")
end
context("currentpicture := currentpicture scaled 8 ;")
context.stopMPcode()
context.stop()
end
end
local unicode = tonumber(specification.character) or
fonts.helpers.nametoslot(specification.character)
if unicode then
showonecharacter(unicode,"all",true)
else
context.modulefontsstartshowglyphshapes()
for unicode, description in fonts.iterators.descriptions(tfmdata) do
if unicode >= 0x110000 then
break
end
local kerns = specification.kerns
if kerns then
local k = description and description.math and description.math.kerns
if k then
if not (kerns == "all" or k[kerns]) then
goto DONE
end
else
goto DONE
end
end
context.modulefontsstartshowglyphshape(unicode,description.name or "",description.index or 0)
showonecharacter(unicode,kerns,false)
context.modulefontsstopshowglyphshape()
::DONE::
end
context.modulefontsstopshowglyphshapes()
end
end
moduledata.fonts.shapes.showglyphshape = showglyphshape
moduledata.fonts.shapes.showallglypshapes = showglyphshape
function moduledata.fonts.shapes.showlastglyphshapefield(unicode,name)
if not descriptions then
-- bad news
elseif name == "unicode" then
context("U+%05X",descriptions.unicode)
else
local d = descriptions[name]
if d then
context(d)
end
end
end
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