diff options
Diffstat (limited to 'tex/context/base/mkiv/back-pdf.lua')
| -rw-r--r-- | tex/context/base/mkiv/back-pdf.lua | 301 |
1 files changed, 10 insertions, 291 deletions
diff --git a/tex/context/base/mkiv/back-pdf.lua b/tex/context/base/mkiv/back-pdf.lua index f45783e51..8886967e0 100644 --- a/tex/context/base/mkiv/back-pdf.lua +++ b/tex/context/base/mkiv/back-pdf.lua @@ -6,302 +6,21 @@ if not modules then modules = { } end modules ['back-pdf'] = { license = "see context related readme files" } --- we could do \pdfmatrix sx <> sy <> etc +-- We hide the pdf table from users so that we can guarantee no interference with +-- the way we manage resources, info, etc. Users should use the \type {lpdf} +-- interface instead. If needed I will provide replacement functionality. -local sind, cosd = math.sind, math.cosd -local insert, remove = table.insert, table.remove - -local codeinjections = backends.pdf.codeinjections - -local context = context - -local scanners = tokens.scanners -local scannumber = scanners.number -local scankeyword = scanners.keyword -local scandimen = scanners.dimen -local scancount = scanners.count -local scanstring = scanners.string - -local scanners = interfaces.scanners -local implement = interfaces.implement - -local report = logs.reporter("backend") - -local outputfilename - -function codeinjections.getoutputfilename() - if not outputfilename then - outputfilename = file.addsuffix(tex.jobname,"pdf") - end - return outputfilename -end - -backends.install("pdf") - -local f_matrix = string.formatters["%F %F %F %F"] -- 0.8 is default - -scanners.pdfrotation = function() -- a - -- todo: check for 1 and 0 and flush sparse - local a = scannumber() - local s, c = sind(a), cosd(a) - context(f_matrix(c,s,-s,c)) -end - --- experimental code (somewhat weird here) .. todo: nodeinjections .. this will only work --- out well if we also calculate the accumulated cm and wrap inclusions / annotations in --- the accumulated ... it's a mess --- --- we could also do the save restore wrapping here + colorhack - -local pdfsave = nodes.pool.pdfsave -local pdfrestore = nodes.pool.pdfrestore -local pdfsetmatrix = nodes.pool.pdfsetmatrix - -local stack = { } -local restore = true -- false - -scanners.pdfstartrotation = function() - local a = scannumber() - if a == 0 then - insert(stack,false) - else - local s, c = sind(a), cosd(a) - context(pdfsave()) - context(pdfsetmatrix(c,s,-s,c)) - insert(stack,restore and { c, -s, s, c } or true) - end -end - -scanners.pdfstartscaling = function() -- at the tex end we use sx and sy instead of rx and ry - local rx, ry = 1, 1 - while true do - if scankeyword("rx") then - rx = scannumber() - elseif scankeyword("ry") then - ry = scannumber() - -- elseif scankeyword("revert") then - -- local top = stack[#stack] - -- if top then - -- rx = top[1] - -- ry = top[4] - -- else - -- rx = 1 - -- ry = 1 - -- end - else - break - end - end - if rx == 1 and ry == 1 then - insert(stack,false) - else - if rx == 0 then - rx = 0.0001 - end - if ry == 0 then - ry = 0.0001 - end - context(pdfsave()) - context(pdfsetmatrix(rx,0,0,ry)) - insert(stack,restore and { 1/rx, 0, 0, 1/ry } or true) - end -end - -scanners.pdfstartmatrix = function() -- rx sx sy ry -- tx, ty - local rx, sx, sy, ry = 1, 0, 0, 1 - while true do - if scankeyword("rx") then rx = scannumber() - elseif scankeyword("ry") then ry = scannumber() - elseif scankeyword("sx") then sx = scannumber() - elseif scankeyword("sy") then sy = scannumber() - else break end - end - if rx == 1 and sx == 0 and sy == 0 and ry == 1 then - insert(stack,false) - else - context(pdfsave()) - context(pdfsetmatrix(rx,sx,sy,ry)) - insert(stack,store and { -rx, -sx, -sy, -ry } or true) - end -end - -local function pdfstopsomething() - local top = remove(stack) - if top == false then - -- not wrapped - elseif top == true then - context(pdfrestore()) - elseif top then - context(pdfsetmatrix(unpack(top))) -- not really needed anymore - context(pdfrestore()) - else - -- nesting error - end -end - -scanners.pdfstoprotation = pdfstopsomething -scanners.pdfstopscaling = pdfstopsomething -scanners.pdfstopmatrix = pdfstopsomething - -scanners.pdfstartmirroring = function() - context(pdfsetmatrix(-1,0,0,1)) -end - -if environment.arguments.nocompression then - lpdf.setcompression(0,0,true) -end - -scanners.pdfstopmirroring = scanners.pdfstartmirroring - --- todo, change the above to implement too -- - -implement { - name = "setmapfile", - arguments = "string", - actions = pdf.mapfile -} - -implement { - name = "setmapline", - arguments = "string", - actions = pdf.mapline -} - -implement { +interfaces.implement { name = "setpdfcompression", arguments = { "integer", "integer" }, actions = lpdf.setcompression, } -local report = logs.reporter("backend","pdftex primitives") -local trace = false - -scanners.pdfannot = function() - if scankeyword("reserveobjectnum") then - report("\\pdfannot reserveobjectnum is not (yet) supported") - -- if trace then - -- report() - -- report("\\pdfannot: reserved number (not supported yet)") - -- report() - -- end - else - local width = false - local height = false - local depth = false - local data = false - local object = false - local attr = false - -- - if scankeyword("useobjnum") then - object = scancount() - report("\\pdfannot useobjectnum is not (yet) supported") - end - while true do - if scankeyword("width") then - width = scandimen() - elseif scankeyword("height") then - height = scandimen() - elseif scankeyword("depth") then - depth = scandimen() - else - break - end - end - if scankeyword("attr") then - attr = scanstring() - end - data = scanstring() - -- - -- less strict variant: - -- - -- while true do - -- if scankeyword("width") then - -- width = scandimen() - -- elseif scankeyword("height") then - -- height = scandimen() - -- elseif scankeyword("depth") then - -- depth = scandimen() - -- elseif scankeyword("useobjnum") then - -- object = scancount() - -- elseif scankeyword("attr") then - -- attr = scanstring() - -- else - -- data = scanstring() - -- break - -- end - -- end - -- - -- if trace then - -- report() - -- report("\\pdfannot:") - -- report() - -- report(" object: %s",object or "<unset> (not supported yet)") - -- report(" width : %p",width or "<unset>") - -- report(" height: %p",height or "<unset>") - -- report(" depth : %p",depth or "<unset>") - -- report(" attr : %s",attr or "<unset>") - -- report(" data : %s",data or "<unset>") - -- report() - -- end - context(backends.nodeinjections.annotation(width or 0,height or 0,depth or 0,data or "")) - end +if CONTEXTLMTXMODE == 0 then + updaters.apply("backend.update.pdf") + updaters.apply("backend.update.lpdf") + updaters.apply("backend.update.tex") + updaters.apply("backend.update") end -scanners.pdfdest = function() - local name = false - local zoom = false - local view = false - local width = false - local height = false - local depth = false - if scankeyword("num") then - report("\\pdfdest num is not (yet) supported") - elseif scankeyword("name") then - name = scanstring() - end - if scankeyword("xyz") then - view = "xyz" - if scankeyword("zoom") then - report("\\pdfdest zoom is ignored") - zoom = scancount() -- will be divided by 1000 in the backend - end - elseif scankeyword("fitbh") then - view = "fitbh" - elseif scankeyword("fitbv") then - view = "fitbv" - elseif scankeyword("fitb") then - view = "fitb" - elseif scankeyword("fith") then - view = "fith" - elseif scankeyword("fitv") then - view = "fitv" - elseif scankeyword("fitr") then - view = "fitr" - while true do - if scankeyword("width") then - width = scandimen() - elseif scankeyword("height") then - height = scandimen() - elseif scankeyword("depth") then - depth = scandimen() - else - break - end - end - elseif scankeyword("fit") then - view = "fit" - end - -- if trace then - -- report() - -- report("\\pdfdest:") - -- report() - -- report(" name : %s",name or "<unset>") - -- report(" view : %s",view or "<unset>") - -- report(" zoom : %s",zoom or "<unset> (not supported)") - -- report(" width : %p",width or "<unset>") - -- report(" height: %p",height or "<unset>") - -- report(" depth : %p",depth or "<unset>") - -- report() - -- end - context(backends.nodeinjections.destination(width or 0,height or 0,depth or 0,{ name or "" },view or "fit")) -end +backends.install("pdf") |