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%D \module
%D [ file=s-fnt-23,
%D version=2009.03.04,
%D title=\CONTEXT\ Style File,
%D subtitle=Tracing Feature Application (3),
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA / Hans Hagen \& Ton Otten}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\startluacode
local last_data = nil
local format = string.format
local function tpf(...)
-- print("!!!!",...)
tex.print(tex.ctxcatcodes,format(...))
end
function fonts.otf.show_shape(n)
local tfmdata = fonts.ids[font.current()]
lastdata = tfmdata
local charnum = tonumber(n)
if not charnum then
charnum = tfmdata.unicodes[n]
end
local c = tfmdata.characters[charnum]
local d = tfmdata.descriptions[charnum]
if d then
local factor = (tfmdata.size/tfmdata.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
tpf("\\startMPcode")
tpf("pickup pencircle scaled .25bp ; ")
tpf('picture p ; p := image(draw textext.drt("\\gray\\char%s");); draw p ;',charnum)
tpf('draw (%s,%s)--(%s,%s)--(%s,%s)--(%s,%s)--cycle withcolor green ;',llx,lly,urx,lly,urx,ury,llx,ury)
tpf('draw (%s,%s)--(%s,%s) withcolor green ;',llx,0,urx,0)
tpf('draw boundingbox p withcolor .2white withpen pencircle scaled .065bp ;')
tpf("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] = format("((%s,%s) shifted (%s,%s))",xsign*k*factor,ysign*h*factor,dx,dy)
end
end
tpf("draw ((%s,%s) shifted (%s,%s))--%s dashed (evenly scaled .25) withcolor .5white;", xsign*v[1].kern*factor,lly,dx,dy,l[1])
tpf("draw laddered (%s) withcolor .5white ;",table.concat(l,".."))
tpf("draw ((%s,%s) shifted (%s,%s))--%s dashed (evenly scaled .25) withcolor .5white;", xsign*v[#v].kern*factor,ury,dx,dy,l[#l])
for k, v in ipairs(l) do
tpf("draw %s withcolor blue withpen pencircle scaled 1bp;",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] = format("((%s,%s) shifted (%s,%s))",xsign*k*factor,ysign*h*factor,dx,dy)
end
end
if loc == "top" then
tpf('label.%s("\\type{%s}",%s shifted (0,-1bp)) ;',loc,txt,l[#l])
else
tpf('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
tpf('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
tpf("draw (%s,%s) withcolor blue withpen pencircle scaled 1bp;",xx,yy)
tpf('label.top("\\type{%s}",(%s,%s-2bp)) ;',txt,xx,yy)
tpf('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
tpf('draw (%s,%s-1bp)--(%s,%s-0.5bp) withcolor blue;',width,ury,width,ury)
tpf('draw (%s,%s-1bp)--(%s,%s-0.5bp) withcolor blue;',width+italic,ury,width+italic,ury)
tpf('draw (%s,%s-1bp)--(%s,%s-1bp) withcolor blue;',width,ury,width+italic,ury)
tpf('label.lft("\\type{%s}",(%s+2bp,%s-1bp));',"italic",width,ury)
tpf('label.rt("%s",(%s-2bp,%s-1bp));',d.italic,width+italic,ury)
end
if top_accent ~= 0 then
tpf('draw (%s,%s+1bp)--(%s,%s-1bp) withcolor blue;',top_accent,ury,top_accent,ury)
tpf('label.bot("\\type{%s}",(%s,%s+1bp));',"top_accent",top_accent,ury)
tpf('label.top("%s",(%s,%s-1bp));',d.top_accent,top_accent,ury)
end
if bot_accent ~= 0 then
tpf('draw (%s,%s+1bp)--(%s,%s-1bp) withcolor blue;',bot_accent,lly,bot_accent,lly)
tpf('label.top("\\type{%s}",(%s,%s-1bp));',"bot_accent",top_accent,ury)
tpf('label.bot("%s",(%s,%s+1bp));',d.bot_accent,bot_accent,lly)
end
tpf('draw origin withcolor red withpen pencircle scaled 1bp;')
tpf("setbounds currentpicture to boundingbox currentpicture enlarged 1bp ;")
tpf("currentpicture := currentpicture scaled 8 ;")
tpf("\\stopMPcode")
elseif c then
local factor = (7200/7227)/65536
tpf("\\startMPcode")
tpf("pickup pencircle scaled .25bp ; ")
tpf('picture p ; p := image(draw textext.drt("\\gray\\char%s");); draw p ;',charnum)
tpf('draw boundingbox p withcolor .2white withpen pencircle scaled .065bp ;')
tpf("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
tpf('draw (%s,%s-1bp)--(%s,%s-0.5bp) withcolor blue;',width,ury,width,ury)
tpf('draw (%s,%s-1bp)--(%s,%s-0.5bp) withcolor blue;',width+italic,ury,width+italic,ury)
tpf('draw (%s,%s-1bp)--(%s,%s-1bp) withcolor blue;',width,ury,width+italic,height)
tpf('label.lft("\\type{%s}",(%s+2bp,%s-1bp));',"italic",width,height)
tpf('label.rt("%6.3f bp",(%s-2bp,%s-1bp));',italic,width+italic,height)
end
if top_accent ~= 0 then
tpf('draw (%s,%s+1bp)--(%s,%s-1bp) withcolor blue;',top_accent,ury,top_accent,height)
tpf('label.bot("\\type{%s}",(%s,%s+1bp));',"top_accent",top_accent,height)
tpf('label.top("%6.3f bp",(%s,%s-1bp));',top_accent,top_accent,height)
end
if bot_accent ~= 0 then
tpf('draw (%s,%s+1bp)--(%s,%s-1bp) withcolor blue;',bot_accent,lly,bot_accent,height)
tpf('label.top("\\type{%s}",(%s,%s-1bp));',"bot_accent",top_accent,height)
tpf('label.bot("%6.3f bp",(%s,%s+1bp));',bot_accent,bot_accent,height)
end
tpf('draw origin withcolor red withpen pencircle scaled 1bp;')
tpf("setbounds currentpicture to boundingbox currentpicture enlarged 1bp ;")
tpf("currentpicture := currentpicture scaled 8 ;")
tpf("\\stopMPcode")
else
tpf("no such shape: %s",n)
end
end
function fonts.otf.show_all_shapes(start,stop)
local tfmdata = fonts.ids[font.current()]
lastdata = tfmdata
start, stop = start or "\\startTEXpage\\gobbleoneargument", stop or "\\stopTEXpage"
local unicodes, indices, descriptions = tfmdata.unicodes, tfmdata.indices, tfmdata.descriptions
for _, unicode in next, table.sortedkeys(descriptions) do
local d = descriptions[unicode]
local name = d.name
tpf("%s{%s}%%",start,unicode)
tpf("\\writestatus{glyph}{U+%04X -> %s}%%",unicode,name)
fonts.otf.show_shape(unicode)
tpf(stop)
end
end
function fonts.otf.show_shape_field(unicode,name)
local tfmdata = lastdata or fonts.ids[font.current()]
local d = tfmdata.descriptions[unicode]
if d then
if name == "unicode" then
tpf("U+%04X",unicode)
else
d = d[name]
if d then
tpf(d)
end
end
end
end
\stopluacode
\setupcolors
[state=start]
\def\GetGlyphField#1#2%
{\ctxlua{fonts.otf.show_shape_field(#1,"#2")}}
\def\StartShowGlyphShape#1%
{\startTEXpage
\nonknuthmode
\def\GlyphUnicode{#1}}
\def\StopShowGlyphShape
{\par
\midaligned{\tttf\setstrut\strut\GetGlyphField\GlyphUnicode{unicode}: \GetGlyphField\GlyphUnicode{name}}%
\stopTEXpage}
\def\ShowGlyphShape#1#2#3% name size glyph
{\begingroup
\definedfont[#1 at #2]%
\obeyMPboxdepth
\ctxlua{fonts.otf.show_shape("#3")}%
\endgroup}
\def\ShowAllGlyphShapes#1#2% name size
{\begingroup
\nonknuthmode
\definedfont[#1 at #2]%
\ctxlua{fonts.otf.show_all_shapes("\\StartShowGlyphShape","\\StopShowGlyphShape")}%
\endgroup}
\setupcolors
[state=start]
\doifnotmode{demo}{\endinput}
\starttext
\startTEXpage \ShowGlyphShape{simplenaskhi}{100bp}{0x62A} \stopTEXpage
\startTEXpage \ShowGlyphShape{simplenaskhi}{100bp}{0x2004} \stopTEXpage
\startTEXpage \ShowGlyphShape{simplenaskhi}{100bp}{0xF0299} \stopTEXpage
\startTEXpage \ShowGlyphShape{simplenaskhi}{100bp}{NameMe.1190} \stopTEXpage
\ShowAllGlyphShapes{simplenaskhi}{100bp}
\stoptext
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