[use/save]boxresource, the Lua part
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@ -47,11 +47,29 @@ token.luacmd("shipout", function()
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local out, resources, annots = writer(pfile, list, fontdirs, usedglyphs, colorstacks)
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cur_page = nil
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local content = pfile:stream(nil, '', out)
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pfile:indirect(page, string.format([[<</Type/Page/Parent %i 0 R/Contents %i 0 R/MediaBox[0 %i %i %i]/Resources%s%s>>]], parent, content, -math.ceil(list.depth/65781.76), math.ceil(list.width/65781.76), math.ceil(list.height/65781.76), resources, annots))
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pfile:indirect(page, string.format([[<</Type/Page/Parent %i 0 R/Contents %i 0 R/MediaBox[0 %i %i %i]/Resources<<%s>>%s>>]], parent, content, -math.ceil(list.depth/65781.76), math.ceil(list.width/65781.76), math.ceil(list.height/65781.76), resources, annots))
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node.flush_list(list)
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token.put_next(token.create'immediateassignment', token.create'global', token.create'deadcycles', token.create(0x30), token.create'relax')
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token.scan_token()
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end, 'force', 'protected')
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local savedbox = require'luametalatex-pdf-savedbox'
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local savedbox_save = savedbox.save
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function tex.saveboxresource(n, attr, resources, immediate, type, margin, pfile)
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if not node.type(n) then
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n = tonumber(n)
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if not n then
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error[[Invalid argument to saveboxresource]]
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end
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token.put_next(token.create'box', token.new(n, token.command_id'char_given'))
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n = token.scan_list()
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end
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margin = margin or tex.sp'1bp' -- FIXME: default margin variable
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return savedbox_save(pfile or get_pfile(), n, attr, resources, immediate, type, margin, fontdirs, usedglyphs)
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end
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tex.useboxresource = savedbox.use
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-- TODO: savedbox TeX interface
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local infodir = ""
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local namesdir = ""
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local catalogdir = ""
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@ -257,12 +275,16 @@ local function addlinkpoint(p, link, x, y, list, kind)
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end
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end
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local function linkcontext_set(linkcontext, p, x, y, list, level, kind)
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if not p.is_page then return end
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for _,l in ipairs(linkcontext) do if l.level == level then
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addlinkpoint(p, l, x, y, list, level, kind)
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end end
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end
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function do_start_link(prop, p, n, x, y, outer, _, level)
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if not p.is_page then
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error[[No link allowed here]]
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end
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local links = p.linkcontext
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if not links then
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links = {set = linkcontext_set}
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@ -273,10 +295,14 @@ function do_start_link(prop, p, n, x, y, outer, _, level)
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addlinkpoint(p, link, x, y, outer, 'start')
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end
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function do_end_link(prop, p, n, x, y, outer, _, level)
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if not p.is_page then
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error[[No link allowed here]]
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end
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local links = p.linkcontext
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if not links then error"No link here to end" end
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local link = links[#links]
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links[#links] = nil
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if not links[1] then p.linkcontext = nil end
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if link.level ~= level then error"Wrong link level" end
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addlinkpoint(p, link, x, y, outer, 'final')
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end
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@ -367,9 +393,10 @@ local function do_colorstack(prop, p, n, x, y)
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local stack
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if p.is_page then
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stack = colorstack.page_stack
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elseif prop.last_form == resources then
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elseif colorstack.last_form == p.resources then
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stack = colorstack.form_stack
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else
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colorstack.last_form = p.resources
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stack = {prop.default}
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colorstack.form_stack = stack
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end
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@ -77,6 +77,7 @@ end
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local function sp2bp(sp)
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return sp/65781.76
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end
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local fontnames = setmetatable({}, {__index = function(t, k) local res = format("F%i", k) t[k] = res return res end})
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local topage
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local function totext(p, fid)
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local last = p.mode
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@ -91,8 +92,12 @@ local function totext(p, fid)
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if last == text and p.font.fid == fid then return end
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local f = font.getfont(fid) or font.fonts[fid]
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if last ~= text then p.strings[#p.strings+1] = "BT" p.pos.lx, p.pos.ly, p.pos.x, p.pos.y, p.font.exfactor, p.font.extend, p.font.squeeze, p.font.slant = 0, 0, 0, 0, 0, 1, 1, 0 end
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p:fontprovider(f, fid)
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-- p.strings[#p.strings+1] = format("/F%i %f Tf 0 Tr", f.parent, sp2bp(f.size)) -- TODO: Setting the mode, expansion, etc.
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if not f.parent then f.parent = pdf.getfontname(fid) end
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p.resources.Font[fontnames[f.parent]] = p.fontdirs[f.parent]
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p.strings[#p.strings+1] = format("/F%i %f Tf 0 Tr", f.parent, sp2bp(f.size)) -- TODO: Setting the mode, width, etc.
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p.font.usedglyphs = p.usedglyphs[f.parent]
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p.font.fid = fid
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p.font.font = f
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local need_tm = false
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@ -257,6 +262,7 @@ local user_rule = rulesubtypes.user
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local empty_rule = rulesubtypes.empty
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local outline_rule = rulesubtypes.outline
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local ship_img = require'luametalatex-pdf-image'.ship
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local ship_box = require'luametalatex-pdf-savedbox'.ship
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-- print(require'inspect'(node.subtypes('glue')))
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-- print(require'inspect'(node.fields('glue')))
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-- print(require'inspect'(node.fields('rule')))
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@ -266,10 +272,10 @@ function nodehandler.rule(p, n, x, y, outer)
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if getheight(n) == -1073741824 then setheight(n, getheight(outer)) end
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if getdepth(n) == -1073741824 then setdepth(n, getdepth(outer)) end
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local sub = getsubtype(n)
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if getwidth(n) <= 0 or getdepth(n) + getheight(n) <= 0 then return end
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if sub == box_rule then
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error[[We can't handle boxes yet]]
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ship_box(getdata(n), p, n, x, y)
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elseif sub == image_rule then
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if getwidth(n) <= 0 or getdepth(n) + getheight(n) <= 0 then return end
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ship_img(getdata(n), p, n, x, y)
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elseif sub == empty_rule then
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elseif sub == user_rule then
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@ -277,7 +283,6 @@ function nodehandler.rule(p, n, x, y, outer)
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elseif sub == outline_rule then
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error[[We can't handle outline rules yet]]
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else
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if getwidth(n) <= 0 or getdepth(n) + getheight(n) <= 0 then return end
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topage(p)
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p.strings[#p.strings+1] = gsub(format("%f %f %f %f re f", sp2bp(x), sp2bp(y - getdepth(n)), sp2bp(getwidth(n)), sp2bp(getdepth(n) + getheight(n))), '%.?0+ ', ' ')
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end
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@ -453,13 +458,13 @@ function nodehandler.glyph(p, n, x, y, ...)
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else
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p.pending[#p.pending+1] = pdf_escape(string.pack('>H', index))
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end
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if not p.usedglyphs[index] then
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p.usedglyphs[index] = {index, math.floor(c.width * 1000 / f.size / p.font.extend + .5), c.tounicode}
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if not p.font.usedglyphs[index] then
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p.font.usedglyphs[index] = {index, math.floor(c.width * 1000 / f.size / p.font.extend + .5), c.tounicode}
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end
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else
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p.pending[#p.pending+1] = pdf_escape(string.char(getchar(n)))
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if not p.usedglyphs[getchar(n)] then
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p.usedglyphs[getchar(n)] = {getchar(n), math.floor(c.width * 1000 / f.size / p.font.extend + .5), c.tounicode}
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if not p.font.usedglyphs[getchar(n)] then
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p.font.usedglyphs[getchar(n)] = {getchar(n), math.floor(c.width * 1000 / f.size / p.font.extend + .5), c.tounicode}
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end
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end
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p.pos.x = p.pos.x + math.floor(getwidth(n)*(1+getexpansion(n)/1000000)+.5)
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@ -521,7 +526,7 @@ local ondemandmeta = {
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}
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local function writeresources(p)
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local resources = p.resources
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local result = {"<<"}
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local result = {}
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for kind, t in pairs(resources) do if next(t) then
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result[#result+1] = format("/%s<<", kind)
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for name, value in pairs(t) do
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@ -530,11 +535,9 @@ local function writeresources(p)
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end
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result[#result+1] = ">>"
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end end
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result[#result+1] = ">>"
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return concat(result)
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end
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local fontnames = setmetatable({}, {__index = function(t, k) local res = format("F%i", k) t[k] = res return res end})
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return function(file, n, fontdirs, usedglyphs, colorstacks)
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local function nodewriter(file, n, fontdirs, usedglyphs, colorstacks)
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n = todirect(n)
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setmetatable(usedglyphs, ondemandmeta)
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local p = {
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@ -544,12 +547,6 @@ return function(file, n, fontdirs, usedglyphs, colorstacks)
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strings = {},
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pending = {},
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pos = {},
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fontprovider = function(p, f, fid)
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if not f.parent then f.parent = pdf.getfontname(fid) end
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p.resources.Font[fontnames[f.parent]] = fontdirs[f.parent]
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p.strings[#p.strings+1] = format("/F%i %f Tf 0 Tr", f.parent, sp2bp(f.size)) -- TODO: Setting the mode, expansion, etc.
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p.usedglyphs = usedglyphs[f.parent]
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end,
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font = {},
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vfont = {},
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matrix = {1, 0, 0, 1, 0, 0},
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@ -557,6 +554,8 @@ return function(file, n, fontdirs, usedglyphs, colorstacks)
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resources = setmetatable({}, ondemandmeta),
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annots = {},
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linkcontext = file.linkcontext,
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fontdirs = fontdirs,
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usedglyphs = usedglyphs,
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}
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if colorstacks then
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for i=1, #colorstacks do
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@ -574,3 +573,5 @@ return function(file, n, fontdirs, usedglyphs, colorstacks)
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topage(p)
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return concat(p.strings, '\n'), writeresources(p), (p.annots[1] and string.format("/Annots[%s]", table.concat(p.annots, ' ')) or "")
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end
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require'luametalatex-pdf-savedbox':init_nodewriter(nodewriter)
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return nodewriter
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99
luametalatex-pdf-savedbox.lua
Normal file
99
luametalatex-pdf-savedbox.lua
Normal file
@ -0,0 +1,99 @@
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local writer -- = require'luametalatex-nodewriter' -- This would introduce some cyclic dependency
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-- XForms currently have the form {width, height, depth, objnum, attributes, list, margin}
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local xforms = {}
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local function to_bp(sp) return sp/65781.76 end
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local function shipout(pfile, xform, fontdirs, usedglyphs)
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local list, margin = xform.list, xform.margin
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if not list then return xform.objnum end -- Already shipped out
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local last_page = cur_page cur_page = nil
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local out, resources, annots = writer(pfile, list, fontdirs, usedglyphs)
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cur_page = last_page
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assert(annots == '')
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local dict = string.format('/Subtype/Form/BBox[%f %f %f %f]/Resources<<%s%s>>%s', -to_bp(margin), -to_bp(list.depth+margin), to_bp(list.width+margin), to_bp(list.height+margin), resources, xform.resources or '', xform.attributes or '')
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node.flush_list(list)
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xform.list = nil
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local objnum = pfile:stream(xform.objnum, dict, out)
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xform.objnum = objnum
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return objnum
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end
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local function save(pfile, n, attr, resources, immediate, type, margin, fontdirs, usedglyphs)
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local index = #xforms+1
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local xform = {
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list = assert(n, 'List required for saveboxresource'),
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width = n.width,
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height = n.height,
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depth = n.depth,
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attributes = attr,
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resources = resources,
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margin = margin,
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-- type = type, -- TODO: Not yet used. Do we need this at all?
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}
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xforms[index] = xform
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if immediate then
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shipout(pfile, xform, fontdirs, usedglyphs)
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end
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return index
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end
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local function adjust_sizes(width, height, depth, real_width, real_height, real_depth)
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if not depth then
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if height then
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local scale = height/real_height
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depth = (real_depth*scale + .5)//1
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width = width or (real_width*scale + .5)//1
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elseif width then
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local scale = width/real_width
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depth = (real_depth*scale + .5)//1
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height = (real_height*scale + .5)//1
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else
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width, height, depth = real_width, real_height, real_depth
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end
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elseif height then
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width = width or (real_width*(height+depth)/(real_height+real_depth) + .5)//1
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else
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width = width or real_width
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local scale = width/real_width
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height = ((real_depth+real_height)*scale + .5)//1 - depth
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end
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return width, height, depth
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end
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local ruleid = node.id'rule'
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local ruletypes = node.subtypes'rule'
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local boxrule
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for n, name in next, ruletypes do
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if name == 'box' then boxrule = n break end
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end
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local function use(index, width, height, depth)
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local xform = xforms[index]
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if not xform then return nil, nil, nil, nil end
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width, height, depth = adjust_sizes(width, height, depth, xform.width, xform.height, xform.depth)
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local n = node.direct.new(ruleid, boxrule)
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node.direct.setdata(n, index)
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node.direct.setwhd(n, width, height, depth)
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return node.direct.tonode(n), width, height, depth
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end
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local function do_box(data, p, n, x, y)
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local xform = assert(xforms[data], 'Invalid XForm')
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local objnum = shipout(p.file, xform, p.fontdirs, p.usedglyphs)
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local width, height, depth = node.direct.getwhd(n)
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local xscale, yscale = width / xform.width, (height+depth) / (xform.height+xform.depth)
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p.resources.XObject['Fm' .. tostring(data)] = objnum
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pdf.write('page', string.format('q %f 0 0 %f %f %f cm /Fm%i Do Q',
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xscale, yscale,
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to_bp(x), to_bp(y-depth+yscale*xform.depth),
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data), nil, nil, p)
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end
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return {
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save = save,
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use = use,
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ship = do_box,
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init_nodewriter = function(t, nodewriter) writer, t.init_nodewriter = nodewriter, nil end,
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}
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