diff options
Diffstat (limited to 'tex/context/base/mkiv/back-pdf.lua')
| -rw-r--r-- | tex/context/base/mkiv/back-pdf.lua | 176 |
1 files changed, 2 insertions, 174 deletions
diff --git a/tex/context/base/mkiv/back-pdf.lua b/tex/context/base/mkiv/back-pdf.lua index 7e4848ef8..cc8d31597 100644 --- a/tex/context/base/mkiv/back-pdf.lua +++ b/tex/context/base/mkiv/back-pdf.lua @@ -6,182 +6,10 @@ if not modules then modules = { } end modules ['back-pdf'] = { license = "see context related readme files" } --- we could do \pdfmatrix sx <> sy <> etc - -local sind, cosd, abs = math.sind, math.cosd, math.abs -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 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 nodepool = nodes.pool -local pdfsave = nodepool.pdfsave -local pdfrestore = nodepool.pdfrestore -local pdfsetmatrix = nodepool.pdfsetmatrix - -local stack = { } -local restore = true -- false - -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 - -local function pdfstartrotation() - local a = scannumber() - if a == 0 then - insert(stack,false) - else - local s, c = sind(a), cosd(a) - if abs(s) < 0.000001 then - s = 0 -- otherwise funny -0.00000 - end - if abs(c) < 0.000001 then - c = 0 -- otherwise funny -0.00000 - end - context(pdfsave()) - context(pdfsetmatrix(c,s,-s,c)) - insert(stack,restore and { c, -s, s, c } or true) - end -end - -implement { name = "pdfstartrotation", actions = pdfstartrotation } -implement { name = "pdfstoprotation", actions = pdfstopsomething } - -local function pdfstartscaling() -- 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 - -implement { name = "pdfstartscaling", actions = pdfstartscaling } -implement { name = "pdfstopscaling", actions = pdfstopsomething } - -local function pdfstartmatrix() -- 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 - -implement { name = "pdfstartmatrix", actions = pdfstartmatrix } -implement { name = "pdfstopmatrix", actions = pdfstopsomething } - -local function pdfstartmirroring() - context(pdfsetmatrix(-1,0,0,1)) -end - -implement { name = "pdfstartmirroring", actions = pdfstartmirroring } -implement { name = "pdfstopmirroring", actions = pdfstartmirroring } -- not: pdfstopsomething - -if environment.arguments.nocompression then - lpdf.setcompression(0,0,true) -end - --- todo: - -implement { - name = "setmapfile", - arguments = "string", - actions = lpdf.setmapfile -} - -implement { - name = "setmapline", - arguments = "string", - actions = lpdf.setmapline -} - -implement { +interfaces.implement { name = "setpdfcompression", arguments = { "integer", "integer" }, actions = lpdf.setcompression, } +backends.install("pdf") |