sile 0.14.8

Simon’s Improved Layout Engine
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local plain = require("classes.plain")

local class = pl.class(plain)
class._name = "pecha"

local tibetanNumber = function (n)
  local out = ""
  local a = 0x0f20
  repeat
    out = luautf8.char(n%10 + a) .. out
    n = (n - n%10)/10
  until n < 1
  return out
end

class.defaultFrameset = {
  content = {
    left = "5%pw",
    right = "95%pw",
    top = "5%ph",
    bottom = "90%ph"
  },
  folio =   {
    left = "right(content)",
    rotate = -90,
    width = "2.5%pw",
    top = "top(content)",
    height = "height(content)"
  },
  runningHead = {
    width = "2.5%pw",
    rotate = -90,
    right = "left(content)",
    top = "top(content)",
    height = "height(content)"
  }
}

function class:_init(options)
  plain._init(self, options)
  self:loadPackage("rotate")
  self:registerPostinit(function ()
    SILE.call("language", { main = "bo" })
    SILE.settings:set("document.lskip", SILE.nodefactory.hfillglue())
    SILE.settings:set("typesetter.parfillskip", SILE.nodefactory.glue())
    SILE.settings:set("document.parindent", SILE.nodefactory.glue())
  end)
end

function class:endPage()
  local folioframe = SILE.getFrame("folio")
  SILE.typesetNaturally(folioframe, function ()
    SILE.settings:pushState()
    -- Restore the settings to the top of the queue, which should be the document #986
    SILE.settings:toplevelState()
    SILE.settings:set("typesetter.breakwidth", folioframe:height())
    SILE.typesetter:typeset(" ")
    SILE.call("vfill")
    SILE.call("pecha-folio-font")
    SILE.call("center", {}, function ()
        SILE.typesetter:typeset(tibetanNumber(SILE.scratch.counters.folio.value))
    end)
    SILE.call("vfill")
    SILE.typesetter:leaveHmode()
    SILE.settings:popState()
  end)
  return plain.endPage(self)
end

function class:newPage()
  SILE.outputter:newPage()
  SILE.outputter:debugFrame(SILE.getFrame("content"))
  return self:initialFrame()
end

return class

-- \right-running-head{\font[size=15pt]{\center{ཤེས་རབ་སྙིང་པོ་ }}}