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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) -- getvalue(cs) context.char(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
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)
specification = interfaces.checkedspecification(specification)
local id, cs = fonts.definers.internal(specification,"<module:fonts:shapes:font>")
local tfmdata = fontdata[id]
local charnum = tonumber(specification.character)
if not charnum then
charnum = fonts.helpers.nametoslot(n)
end
context.start()
context.dontleavehmode()
context.obeyMPboxdepth()
local characters = tfmdata.characters
local descriptions = tfmdata.descriptions
local parameters = tfmdata.parameters
local c = characters[charnum]
local d = descriptions[charnum]
if d then
local factor = (parameters.size/parameters.units)*((7200/7227)/65536)
local llx, lly, urx, ury = unpack(d.boundingbox)
llx, lly, urx, ury = llx*factor, lly*factor, urx*factor, ury*factor
local width, italic = (d.width or 0)*factor, (d.italic or 0)*factor
local top_accent, bot_accent = (d.top_accent or 0)*factor, (d.bot_accent or 0)*factor
local anchors, math = d.anchors, d.math
context.startMPcode()
context("numeric lw ; lw := .125bp ;")
context("pickup pencircle scaled lw ;")
context('picture p ; p := image(draw textext.drt("\\getuvalue{%s}\\gray\\char%s");); draw p ;',cs,charnum)
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
local function slant_1(v,dx,dy,txt,xsign,ysign,loc,labloc)
if #v > 0 then
local l = { }
for kk, vv in ipairs(v) do
local h, k = vv.height, vv.kern
if h and k then
l[#l+1] = formatters["((%s,%s) shifted (%s,%s))"](xsign*k*factor,ysign*h*factor,dx,dy)
end
end
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])
context("draw laddered (%s) withcolor .5white ;",table.concat(l,".."))
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])
for k, v in ipairs(l) do
context("draw %s withcolor blue withpen pencircle scaled 2lw ;",v)
end
end
end
local function slant_2(v,dx,dy,txt,xsign,ysign,loc,labloc)
if #v > 0 then
local l = { }
for kk, vv in ipairs(v) do
local h, k = vv.height, vv.kern
if h and k then
l[#l+1] = formatters["((%s,%s) shifted (%s,%s))"](xsign*k*factor,ysign*h*factor,dx,dy)
end
end
if loc == "top" then
context('label.%s("\\type{%s}",%s shifted (0,-1bp)) ;',loc,txt,l[#l])
else
context('label.%s("\\type{%s}",%s shifted (0,2bp)) ;',loc,txt,l[1])
end
for kk, vv in ipairs(v) do
local h, k = vv.height, vv.kern
if h and k then
context('label.top("(%s,%s)",%s shifted (0,-2bp));',k,h,l[kk])
end
end
end
end
if math then
local kerns = math.kerns
if kerns then
for _, slant in ipairs { slant_1, slant_2 } do
for k,v in pairs(kerns) do
if k == "top_right" then
slant(v,width+italic,0,k,1,1,"top","ulft")
elseif k == "bottom_right" then
slant(v,width,0,k,1,1,"bot","lrt")
elseif k == "top_left" then
slant(v,0,0,k,-1,1,"top","ulft")
elseif k == "bottom_left" then
slant(v,0,0,k,-1,1,"bot","lrt")
end
end
end
end
end
local function show(x,y,txt)
local xx, yy = x*factor, y*factor
context("draw (%s,%s) withcolor blue withpen pencircle scaled 2lw ;",xx,yy)
context('label.top("\\type{%s}",(%s,%s-2bp)) ;',txt,xx,yy)
context('label.bot("(%s,%s)",(%s,%s+2bp)) ;',x,y,xx,yy)
end
if anchors then
local a = anchors.baselig
if a then
for k, v in pairs(a) do
for kk, vv in ipairs(v) do
show(vv[1],vv[2],k .. ":" .. kk)
end
end
end
local a = anchors.mark
if a then
for k, v in pairs(a) do
show(v[1],v[2],k)
end
end
local a = anchors.basechar
if a then
for k, v in pairs(a) do
show(v[1],v[2],k)
end
end
local ba = anchors.centry
if a then
for k, v in pairs(a) do
show(v[1],v[2],k)
end
end
local a = anchors.cexit
if a then
for k, v in pairs(a) do
show(v[1],v[2],k)
end
end
end
if italic ~= 0 then
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+italic,ury,width+italic,ury)
context('draw (%s,%s-1bp)--(%s,%s-1bp) withcolor blue ;',width,ury,width+italic,ury)
context('label.lft("\\type{%s}",(%s+2bp,%s-1bp));',"italic",width,ury)
context('label.rt("%s",(%s-2bp,%s-1bp));',d.italic,width+italic,ury)
end
if top_accent ~= 0 then
context('draw (%s,%s+1bp)--(%s,%s-1bp) withcolor blue;',top_accent,ury,top_accent,ury)
context('label.bot("\\type{%s}",(%s,%s+1bp));',"top_accent",top_accent,ury)
context('label.top("%s",(%s,%s-1bp));',d.top_accent,top_accent,ury)
end
if bot_accent ~= 0 then
context('draw (%s,%s+1bp)--(%s,%s-1bp) withcolor blue;',bot_accent,lly,bot_accent,lly)
context('label.top("\\type{%s}",(%s,%s-1bp));',"bot_accent",top_accent,ury)
context('label.bot("%s",(%s,%s+1bp));',d.bot_accent,bot_accent,lly)
end
context('draw origin withcolor red withpen pencircle scaled 2lw;')
context("setbounds currentpicture to boundingbox currentpicture enlarged 1bp ;")
context("currentpicture := currentpicture scaled 8 ;")
context.stopMPcode()
-- elseif c then
-- lastdata, lastunicode = nil, nil
-- local factor = (7200/7227)/65536
-- context.startMPcode()
-- context("pickup pencircle scaled .25bp ; ")
-- context('picture p ; p := image(draw textext.drt("\\gray\\char%s");); draw p ;',charnum)
-- context('draw boundingbox p withcolor .2white withpen pencircle scaled .065bp ;')
-- context("defaultscale := 0.05 ; ")
-- local italic, top_accent, bot_accent = (c.italic or 0)*factor, (c.top_accent or 0)*factor, (c.bot_accent or 0)*factor
-- local width, height, depth = (c.width or 0)*factor, (c.height or 0)*factor, (c.depth or 0)*factor
-- local ury = height
-- if italic ~= 0 then
-- 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+italic,ury,width+italic,ury)
-- context('draw (%s,%s-1bp)--(%s,%s-1bp) withcolor blue;',width,ury,width+italic,height)
-- context('label.lft("\\type{%s}",(%s+2bp,%s-1bp));',"italic",width,height)
-- context('label.rt("%6.3f bp",(%s-2bp,%s-1bp));',italic,width+italic,height)
-- end
-- if top_accent ~= 0 then
-- context('draw (%s,%s+1bp)--(%s,%s-1bp) withcolor blue;',top_accent,ury,top_accent,height)
-- context('label.bot("\\type{%s}",(%s,%s+1bp));',"top_accent",top_accent,height)
-- context('label.top("%6.3f bp",(%s,%s-1bp));',top_accent,top_accent,height)
-- end
-- if bot_accent ~= 0 then
-- context('draw (%s,%s+1bp)--(%s,%s-1bp) withcolor blue;',bot_accent,lly,bot_accent,height)
-- context('label.top("\\type{%s}",(%s,%s-1bp));',"bot_accent",top_accent,height)
-- context('label.bot("%6.3f bp",(%s,%s+1bp));',bot_accent,bot_accent,height)
-- end
-- context('draw origin withcolor red withpen pencircle scaled 1bp;')
-- context("setbounds currentpicture to boundingbox currentpicture enlarged 1bp ;")
-- context("currentpicture := currentpicture scaled 8 ;")
-- context.stopMPcode()
else
lastdata, lastunicode = nil, nil
context("no such shape: 0x%05X",charnum)
end
context.stop()
end
moduledata.fonts.shapes.showglyphshape = showglyphshape
function moduledata.fonts.shapes.showallglypshapes(specification)
specification = interfaces.checkedspecification(specification)
local id, cs = fonts.definers.internal(specification,"<module:fonts:shapes:font>")
local descriptions = fontdata[id].descriptions
for unicode, description in fonts.iterators.descriptions(tfmdata) do
context.modulefontsstartshowglyphshape(unicode,description.name)
showglyphshape { number = id, character = unicode }
context.modulefontsstopshowglyphshape()
end
end
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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