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|
\inputluafile fonts.ptxlua
\pdfadjustspacing=2
\def\currentfont{}
\def\currentsize{normal}
\def\currentstyle{rm}
\def\currentweight{rg}
\def\currentcase{lc}
\def\makecurrentfont{%
\csname\currentfont @\currentsize @\currentstyle @\currentweight @\currentcase\endcsname
}
\def\normalsize{%
\def\currentsize{normal}%
\makecurrentfont
}
\def\small{%
\def\currentsize{small}%
\makecurrentfont
}
\def\verysmall{%
\def\currentsize{verysmall}%
\makecurrentfont
}
\def\smaller{%
\passexpanded\ifstring\currentsize{normal}%
{\def\currentsize{small}}
{\def\currentsize{verysmall}}
\makecurrentfont
}
\def\big{%
\def\currentsize{big}%
\makecurrentfont
}
\def\verybig{%
\def\currentsize{verybig}%
\makecurrentfont
}
\def\bigger{%
\passexpanded\ifstring\currentsize{normal}%
{\def\currentsize{big}}
{\def\currentsize{verybig}}
\makecurrentfont
}
\def\it{%
\def\currentstyle{it}%
\makecurrentfont
}
\def\rm{%
\def\currentstyle{rm}%
\makecurrentfont
}
\def\rmstring{rm}
\def\emph{%
\ifx\currentstyle\rmstring
\expandafter\ital
\else
\expandafter\rom
\fi
}
\def\bf{%
\def\currentweight{bf}%
\makecurrentfont
}
%\def\normalweight{%
\def\rg{%
\def\currentweight{rg}%
\makecurrentfont
}
\def\sc{%
\def\currentcase{sc}%
\makecurrentfont
}
%\def\normalcase{%
\def\lc{%
\def\currentcase{lc}%
\makecurrentfont
}
\freedef\ital{{\it#1}}
\freedef\bold{{\bf#1}}
\freedef\scap{{\sc#1}}
\freedef\rom{{\rm#1}}
\restrictparameter font :
command % The command to be used to switch to that font.
name % Actually the part common to all files' names for that font.
size % Well, the size.
small % Smaller size.
verysmall % Smaller yet.
big % Bigger.
verybig % Insanely big.
bold % Modifier for bold font.
italic % Modifier for italic font.
math % If set to "true", then used for math font.
% small, verysmall and italic should be specified
% (which shows I don't use it very often).
features % Font features (e.g. +onum, etc.).
slant % A number representing an angle, loading an italic
% font if no real italic is a available.
slantsc % The same, for small caps.
% The font parameter should disappear some day, it's clumsy.
\def\setfont#1:{%
\setparameter font : command = #1%
}
\setparameter metafont : % No relation :)
size = 10pt
bold = Bold
italic = Italic
features = "+onum; +liga; +trep; +tlig; expansion=30 20 5;"
\setparameter font :
meta = metafont
\newdimen\ptx@fontsize
\luacode
ptx_fonts = {}
function ptx_getfont(Font, ...)
if ptx_fonts[Font] then
local tempfont = ptx_fonts[Font]
for _, style in ipairs(arg) do
if ptx_getstyle[style] then
tempfont = tempfont:gsub("(%w+)@(%w+)@(%w+)@(%w+)@(%w+)",ptx_getstyle[style])
else
tempfont = nil
texio.write_nl("! PiTeX error: Unknown font style `style'.")
return Font
end
end
return font.id(tempfont)
else
texio.write_nl("! PiTeX error: " .. Font .. " is not a PiTeX font. It can't be changed.")
end
end
ptx_getstyle = {
normal = "%1@normal@%3@%4@%5",
small = "%1@small@%3@%4@%5",
verysmall = "%1@verysmall@%3@%4@%5",
big = "%1@big@%3@%4@%5",
verybig = "%1@verybig@%3@%4@%5",
rm = "%1@%2@rm@%4@%5",
it = "%1@%2@it@%4@%5",
rg = "%1@%2@%3@rg@%5",
bf = "%1@%2@%3@bf@%5",
lc = "%1@%2@%3@%4@lc",
sc = "%1@%2@%3@%4@sc"
}
\luacode/
\newstring{+} \newstring{-}
\def\ptx@dofont#1#2#3#4#5{%
\edef\ptx@temp{\passvaluenobraces\commandtoname font : command }%
\ifexpression{ -\ifstring{#4}{normal} & { \ifprefix-{#5} | \ifprefix+{#5} } }
{\def\ptx@dofont_size{\dimexpr\usevalue font : size + #5\relax}}
{\def\ptx@dofont_size{#5}}%
\ptx@dofont_load{\ptx@temp @#4@#1@#2@lc}{#3}{}{\ptx@dofont_size}%
\ifstring{#1}{rm}
{\ptx@dofont_load{\ptx@temp @#4@#1@#2@sc}{#3}{+smcp;}{\ptx@dofont_size}%
\ifattribute font : slant % Loading a slanted version of the font if no italic was given
{\ptx@dofont_load{\ptx@temp @#4@it@#2@lc}{#3}{slant=\usevalue font: slant ;}{\ptx@dofont_size}
\ifattribute font : slantsc {}
{\ptx@dofont_load{\ptx@temp @#4@it@#2@sc}{#3}{+smcp;slant=\usevalue font: slant ;}{\ptx@dofont_size}}}{}%
\ifattribute font : slantsc
{\ptx@dofont_load{\ptx@temp @#4@it@#2@sc}{#3}{+smcp;slant=\usevalue font: slantsc ;}{\ptx@dofont_size}}{}}%
{\ifattribute font : slantsc {}{\ptx@dofont_load{\ptx@temp @#4@it@#2@sc}{#3}{+smcp;}{\ptx@dofont_size}}}
}
\def\ptx@dofont_load#1#2#3#4{%
\passcs\font{#1}="\usevalue font : name #2:#3\usevalue font : features " at #4\relax
\ptx@lua{ptx_fonts[font.id("#1")] = "#1"}%
}
\def\dofont#1#2#3{%
\passvalue{\ptx@dofont{#1}{#2}{#3}{normal}} font : size
\passvalue{\ptx@dofont{#1}{#2}{#3}{small}} font : small
\passvalue{\ptx@dofont{#1}{#2}{#3}{verysmall}} font : verysmall
\passvalue{\ptx@dofont{#1}{#2}{#3}{big}} font : big
\passvalue{\ptx@dofont{#1}{#2}{#3}{verybig}} font : verybig
%
\ifvalue font : math = true
{\ifstring{#1#2}{rmrg}
{\passcs{\textfont0=}{\passvalue\commandtoname font : command @normal@#1@#2@lc}%
\passcs{\scriptfont0=}{\passvalue\commandtoname font : command @small@#1@#2@lc}%
\passcs{\scriptscriptfont0=}{\passvalue\commandtoname font : command @verysmall@#1@#2@lc}
\passcs{\textfont2=}{\passvalue\commandtoname font : command @normal@#1@#2@lc}%
\passcs{\scriptfont2=}{\passvalue\commandtoname font : command @small@#1@#2@lc}%
\passcs{\scriptscriptfont2=}{\passvalue\commandtoname font : command @verysmall@#1@#2@lc}}
{\iffstring{#1#2}{itrg}
{\passcs{\textfont1=}{\passvalue\commandtoname font : command @normal@#1@#2@lc}%
\passcs{\scriptfont1=}{\passvalue\commandtoname font : command @verysmall@#1@#2@lc}%
\passcs{\scriptscriptfont1=}{\passvalue\commandtoname font : command @verysmall@#1@#2@lc}}}%
}{}%
}
\gates new \FontLoader {FontLoader}
\FontLoader list {fontloader}
[fl_command]
{%
\passvaluenobraces\edef font : command {%
\def\noexpand\currentfont{\passvalue\commandtoname font : command }%
\noexpand\makecurrentfont}}
(fl_load)
. ( fl_roman )
. . [ fl_doromanregular ]
{\dofont{rm}{rg}{}}
. . [ fl_doromanbold ] ? {conditional = -\ifvalue font : bold = none }
{\dofont{rm}{bf}{/\usevalue font : bold }}
. ( fl_italic ) ? {conditional = -\ifvalue font : italic = none }
. . [ fl_doitalicregular ]
{\dofont{it}{rg}{/\usevalue font : italic }}
. . [ fl_doitalicbold ] ? {conditional = -\ifvalue font : bold = none }
{\dofont{it}{bf}{/\usevalue font : italic /\usevalue font : bold }}
[fl_use] ? {conditional = \ifvalue font : command = {\mainfont} }
{\mainfont}
(fl_post)
. [fl_delete]
{\deleteparameter font:}
. [fl_meta]
{\setattribute font : meta = metafont }
\defactiveparameter font {%
\FontLoader execute {fontloader}%
}
\long\def\color#1#2{%
\pdfcolorstack0 push {#1 rg #1 RG}%
#2%
\pdfcolorstack0 pop%
}
\newattribute\ptx@underline_attribute
\luacode
local do_underline = function (head,order,ratio,sign)
local item, leader = head, false
while item do
leader = false
if node.has_attribute(item,\attributenumber\ptx@underline_attribute)
and not (item.id == 10 and (item.subtype == 8 or item.subtype == 9)) then
local item_line = node.new(2)
item_line.depth = tex.sp("1.4pt")
item_line.height = tex.sp("-1pt")
if node.has_field(item,"spec") then
item_line.width = item.spec.width
if order == 0 then
if sign == 1 then
item_line.width = item_line.width + ratio * item.spec.stretch
else
item_line.width = item_line.width - ratio * item.spec.shrink
end
else
if item.spec.stretch_order > 0 or item.spec.shrink_order > 0 then
lualog(item.spec.stretch_order)
item_line.width = 1
item.subtype = 100
item.leader = item_line
leader = true
end
end
elseif node.has_field(item,"width") then
item_line.width = item.width
elseif node.has_field(item,"kern") then
item_line.width = item.kern
end
if leader then
item = item.next
else
local item_kern = node.new(11)
item_kern.kern = -item_line.width
node.insert_after(head,item,item_line)
node.insert_after(head,item,item_kern)
item = item_line.next
end
else
item = item.next
end
end
end
pitex.misc.underline = function (head)
for line in node.traverse_id(0,head) do
do_underline(line.list,line.glue_order,line.glue_set,line.glue_sign)
end
return head
end
pitex.callback.register("post_linebreak_filter", "pitex.misc:underline")
pitex.callback.close("pitex.misc:underline", "post_linebreak_filter")
\luacode/
\freedef\underline{%
\ptx@lua{%
pitex.callback.ajar("pitex:underline", "post_linebreak_filter")
}
% local plf = callback.list_functions("post_linebreak_filter")
% if not plf or not plf["underline"] then
% callback.add_function(underline, "underline", "post_linebreak_filter")
% end}%
\quitvmode % Otherwise it might also underline the indentation box.
\ptx@underline_attribute=0\relax
#1\unsetattribute\ptx@underline_attribute
}
|
