if not modules then modules = { } end modules ['mlib-int'] = {
    version   = 1.001,
    comment   = "companion to mlib-ctx.mkiv",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files",
}

local factor         = number.dimenfactors.bp
----- mpprint        = mp.print
local mpnumeric      = mp.numeric
local mpboolean      = mp.boolean
local mpstring       = mp.string
local mpquoted       = mp.quoted
local getdimen       = tex.getdimen
local getcount       = tex.getcount
local getmacro       = tokens.getters.macro
local get            = tex.get
local mpcolor        = attributes.colors.mpcolor
local emwidths       = fonts.hashes.emwidths
local exheights      = fonts.hashes.exheights

local registerscript = metapost.registerscript

local on_right_page  = structures.pages.on_right
local is_odd_page    = structures.pages.is_odd
local in_body_page   = structures.pages.in_body
local page_fraction  = structures.pages.fraction

local function defaultcolormodel() -- can be helper
    local colormethod = getcount("MPcolormethod")
    return (colormethod == 0 or colormethod == 1) and 1 or 3
end

function mp.PaperHeight         () mpnumeric(getdimen("paperheight")          * factor) end
function mp.PaperWidth          () mpnumeric(getdimen("paperwidth")           * factor) end
function mp.PrintPaperHeight    () mpnumeric(getdimen("printpaperheight")     * factor) end
function mp.PrintPaperWidth     () mpnumeric(getdimen("printpaperwidth")      * factor) end
function mp.TopSpace            () mpnumeric(getdimen("topspace")             * factor) end
function mp.BottomSpace         () mpnumeric(getdimen("bottomspace")          * factor) end
function mp.BackSpace           () mpnumeric(getdimen("backspace")            * factor) end
function mp.CutSpace            () mpnumeric(getdimen("cutspace")             * factor) end
function mp.MakeupHeight        () mpnumeric(getdimen("makeupheight")         * factor) end
function mp.MakeupWidth         () mpnumeric(getdimen("makeupwidth")          * factor) end
function mp.TopHeight           () mpnumeric(getdimen("topheight")            * factor) end
function mp.TopDistance         () mpnumeric(getdimen("topdistance")          * factor) end
function mp.HeaderHeight        () mpnumeric(getdimen("headerheight")         * factor) end
function mp.HeaderDistance      () mpnumeric(getdimen("headerdistance")       * factor) end
function mp.TextHeight          () mpnumeric(getdimen("textheight")           * factor) end
function mp.FooterDistance      () mpnumeric(getdimen("footerdistance")       * factor) end
function mp.FooterHeight        () mpnumeric(getdimen("footerheight")         * factor) end
function mp.BottomDistance      () mpnumeric(getdimen("bottomdistance")       * factor) end
function mp.BottomHeight        () mpnumeric(getdimen("bottomheight")         * factor) end
function mp.LeftEdgeWidth       () mpnumeric(getdimen("leftedgewidth")        * factor) end
function mp.LeftEdgeDistance    () mpnumeric(getdimen("leftedgedistance")     * factor) end
function mp.LeftMarginWidth     () mpnumeric(getdimen("leftmarginwidth")      * factor) end
function mp.LeftMarginDistance  () mpnumeric(getdimen("leftmargindistance")   * factor) end
function mp.TextWidth           () mpnumeric(getdimen("textwidth")            * factor) end
function mp.RightMarginDistance () mpnumeric(getdimen("rightmargindistance")  * factor) end
function mp.RightMarginWidth    () mpnumeric(getdimen("rightmarginwidth")     * factor) end
function mp.RightEdgeDistance   () mpnumeric(getdimen("rightedgedistance")    * factor) end
function mp.RightEdgeWidth      () mpnumeric(getdimen("rightedgewidth")       * factor) end
function mp.InnerMarginDistance () mpnumeric(getdimen("innermargindistance")  * factor) end
function mp.InnerMarginWidth    () mpnumeric(getdimen("innermarginwidth")     * factor) end
function mp.OuterMarginDistance () mpnumeric(getdimen("outermargindistance")  * factor) end
function mp.OuterMarginWidth    () mpnumeric(getdimen("outermarginwidth")     * factor) end
function mp.InnerEdgeDistance   () mpnumeric(getdimen("inneredgedistance")    * factor) end
function mp.InnerEdgeWidth      () mpnumeric(getdimen("inneredgewidth")       * factor) end
function mp.OuterEdgeDistance   () mpnumeric(getdimen("outeredgedistance")    * factor) end
function mp.OuterEdgeWidth      () mpnumeric(getdimen("outeredgewidth")       * factor) end
function mp.PageOffset          () mpnumeric(getdimen("pagebackgroundoffset") * factor) end
function mp.PageDepth           () mpnumeric(getdimen("pagebackgrounddepth")  * factor) end
function mp.LayoutColumns       () mpnumeric(getcount("layoutcolumns"))                 end
function mp.LayoutColumnDistance() mpnumeric(getdimen("layoutcolumndistance") * factor) end
function mp.LayoutColumnWidth   () mpnumeric(getdimen("layoutcolumnwidth")    * factor) end
function mp.SpineWidth          () mpnumeric(getdimen("spinewidth")           * factor) end
function mp.PaperBleed          () mpnumeric(getdimen("paperbleed")           * factor) end

function mp.RealPageNumber      () mpnumeric(getcount("realpageno")                   ) end
function mp.LastPageNumber      () mpnumeric(getcount("lastpageno")                   ) end

function mp.PageNumber          () mpnumeric(getcount("pageno")                       ) end
function mp.NOfPages            () mpnumeric(getcount("lastpageno")                   ) end

function mp.SubPageNumber       () mpnumeric(getcount("subpageno")                    ) end
function mp.NOfSubPages         () mpnumeric(getcount("lastsubpageno")                ) end

function mp.CurrentColumn       () mpnumeric(getcount("mofcolumns")                   ) end
function mp.NOfColumns          () mpnumeric(getcount("nofcolumns")                   ) end

function mp.BaseLineSkip        () mpnumeric(get     ("baselineskip",true)    * factor) end
function mp.LineHeight          () mpnumeric(getdimen("lineheight")           * factor) end
function mp.BodyFontSize        () mpnumeric(getdimen("bodyfontsize")         * factor) end

function mp.TopSkip             () mpnumeric(get     ("topskip",true)         * factor) end
function mp.StrutHeight         () mpnumeric(getdimen("strutht")              * factor) end
function mp.StrutDepth          () mpnumeric(getdimen("strutdp")              * factor) end

function mp.PageNumber          () mpnumeric(getcount("pageno")                       ) end
function mp.RealPageNumber      () mpnumeric(getcount("realpageno")                   ) end
function mp.NOfPages            () mpnumeric(getcount("lastpageno")                   ) end

function mp.CurrentWidth        () mpnumeric(get     ("hsize")                * factor) end
function mp.CurrentHeight       () mpnumeric(get     ("vsize")                * factor) end

function mp.EmWidth             () mpnumeric(emwidths [false]                 * factor) end
function mp.ExHeight            () mpnumeric(exheights[false]                 * factor) end

function mp.OverlayWidth        () mpnumeric(getdimen("d_overlay_width")      * factor) end
function mp.OverlayHeight       () mpnumeric(getdimen("d_overlay_height")     * factor) end
function mp.OverlayDepth        () mpnumeric(getdimen("d_overlay_depth")      * factor) end
function mp.OverlayLineWidth    () mpnumeric(getdimen("d_overlay_linewidth")  * factor) end
function mp.OverlayOffset       () mpnumeric(getdimen("d_overlay_offset")     * factor) end
function mp.OverlayRegion       () mpstring (getmacro("m_overlay_region")             ) end

function mp.PageFraction        () mpnumeric(page_fraction()                          ) end
function mp.OnRightPage         () mpboolean(on_right_page()                          ) end
function mp.OnOddPage           () mpboolean(is_odd_page  ()                          ) end
function mp.InPageBody          () mpboolean(in_body_page ()                          ) end

function mp.OverlayWidth        () mpnumeric(getdimen("d_overlay_width")      * factor) end
function mp.OverlayHeight       () mpnumeric(getdimen("d_overlay_height")     * factor) end
function mp.OverlayDepth        () mpnumeric(getdimen("d_overlay_depth")      * factor) end
function mp.OverlayLineWidth    () mpnumeric(getdimen("d_overlay_linewidth")  * factor) end
function mp.OverlayOffset       () mpnumeric(getdimen("d_overlay_offset")     * factor) end
function mp.OverlayRegion       () mpstring (getmacro("m_overlay_region")             ) end
--       mp.CurrentLayout       () mpstring (getmacro("currentlayout"))                 end

function mp.defaultcolormodel   () mpnumeric(defaultcolormodel())                       end

mp.HSize          = mp.CurrentWidth
mp.VSize          = mp.CurrentHeight
mp.LastPageNumber = mp.NOfPages

-- not much difference (10000 calls in a graphic neither as expansion seems to win
-- over defining the macro etc) so let's not waste counters then

-- function mp.OverlayColor()
--     local c = mpcolor(
--         getcount("c_overlay_colormodel"),
--         getcount("c_overlay_color"),
--         getcount("c_overlay_transparency")
--     )
--     mpquoted(c)
-- end
--
-- function mp.OverlayLineColor()
--     local c = mpcolor(
--         getcount("c_overlay_colormodel"),
--         getcount("c_overlay_linecolor"),
--         getcount("c_overlay_linetransparency")
--     )
--     mpquoted(c)
-- end