local common  = fonts.goodies.load("common-math.lfg")
local presets = common.mathematics.tweaks.presets

-- local integral_variants = {  bottomright = -0.4 }
-- ----- integral_top      = {  topright    =  0.05 }
-- local integral_bottom   = {  bottomright = -0.35 }

return {
    name = "stix-two-math",
    version = "1.00",
    comment = "Goodies that complement stix two opentype.",
    author = "Hans Hagen & Mikael Sundqvist",
    copyright = "ConTeXt development team",
    mathematics = {
        alternates = {
--             lambdabar    = { feature = 'cv01', value = 1, comment = "Mathematical Alternative Lambda Bar" },
--             ramshorn     = { feature = 'cv02', value = 1, comment = "Mathematical Alternative Rams Horn" },
--             emptyset     = { feature = 'cv03', value = 1, comment = "Mathematical Alternative Empty Set" },
--             setminus     = { feature = 'cv04', value = 1, comment = "Mathematical Alternative Setminus" },
--             calligraphic = { feature = 'ss01', value = 1, comment = "Mathematical Alternative Calligraphic Characters" }, -- We do this differently
--             italic       = { feature = 'ss02', value = 1, comment = "Mathematical Alternative Lowercase Italic" },
--             barred       = { feature = 'ss03', value = 1, comment = "Mathematical Alternative Barred Characters" }, -- hbar, lambdabar etc
--             primes       = { feature = 'ss04', value = 1, comment = "Mathematical Alternative Primes" },            -- larger/lower primes, minute etc
--             arrow        = { feature = 'ss05', value = 1, comment = "Mathematical Alternative Smaller Arrows" },
--             narrower     = { feature = 'ss06', value = 1, comment = "Mathematical Alternative Narrower Elements" }, -- narrower/shorter element etc
--             small        = { feature = 'ss07', value = 1, comment = "Mathematical Alternative Smaller Operators" },
--             upright      = { feature = 'ss08', value = 1, comment = "Mathematical Alternative Upright Symbols" },   -- upright integrals etc.
--             negated      = { feature = 'ss09', value = 1, comment = "Mathematical Alternative Negated Symbols" },
--             relation     = { feature = 'ss10', value = 1, comment = "Mathematical Alternative Relations" },
--             negatedset   = { feature = 'ss11', value = 1, comment = "Mathematical Alternative Negated Set Symbols" },
--             propfrown    = { feature = 'ss12', value = 1, comment = "Mathematical Alternative Proportional and Frown" },
--             negsine      = { feature = 'ss13', value = 1, comment = "Mathematical Alternative Negated Sine Wave" },
--             intprod      = { feature = 'ss14', value = 1, comment = "Mathematical Alternative Interior Products" },
--             capcup       = { feature = 'ss15', value = 1, comment = "Mathematical Alternative Intersection and Union with serif" },
--             circled      = { feature = 'ss16', value = 1, comment = "Mathematical Alternative Circled Operators" },
--             simvar       = { feature = 'ss20', value = 1, comment = "Mathematical Alternative Similar and some more unrelated" },
--             -- demo features:
--             negated8774      = {
--                 feature = 'ss09',
--                 value   = 1,
--                 comment = "Mathematical Alternative Negated 8774",
--                 list    = { [8774] = true },
--             },
--             negated8775   = {
--                 feature = 'ss09',
--                 value   = 1,
--                 comment = "Mathematical Alternative Negated 8775",
--                 list    = { [8775] = true },
--             },
        },
        parameters = {
--             AccentBaseDepth                =   30,
--             FlattenedAccentTopShiftUp      =    0,
--             RadicalKernAfterDegree         = -500,
               DelimiterPercent               =   90,
               DelimiterShortfall             =  400,
               DelimiterDisplayPercent        =   90,
               DelimiterDisplayShortfall      =  400,
--             DisplayOperatorMinHeight       = 1800, -- 1800 in font
               PrimeShiftUp                   = "1.15*SuperscriptShiftUp",
               PrimeShiftUpCramped            = "1.15*SuperscriptShiftUp",
--             RadicalDisplayStyleVerticalGap = "RadicalVerticalGap", --170, 85
--          -- SuperscriptSnap                = 1000,
--          -- SubscriptSnap                  =  500,
        },
        tweaks = {
            aftercopying = {
                {
                    tweak    = "version",
                    expected = "Version 2.12 b168",
                },
                {
                    tweak   = "fixprimes",
                    factor  = 0.9,
                },
                {
                    tweak = "addmirrors",
                },
                {
                    tweak = "addcomposites",
                },
                -- MS: we need to check this, I moved it up
--                 {
--                     tweak   = "replacealphabets",
--                     list    = {
--                         {
--                             source  = "uppercasescript",
--                             target  = "uppercasecalligraphic",
--                             unicode = "uppercasescript",
--                         },
--                         {
--                             source  = "uppercasescript",
--                             target  = "uppercasescript",
--                             feature = "ss01",
--                         },
--                         {
--                             source  = "uppercaseboldscript",
--                             target  = "uppercaseboldcalligraphic",
--                             unicode = "uppercasescriptbold",
--                         },
--                         {
--                             source  = "uppercaseboldscript",
--                             target  = "uppercaseboldscript",
--                             feature = "ss01",
--                         },
--                         {
--                             source  = { first = 0xE17D, last = 0xE195 },
--                             target  = "uppercasesansgreek",
--                             unicode = "uppercasegreeknormal",
--                         },
--                         {
--                             source  = { first = 0xE196, last = 0xE1AE }, -- maybe last = E1B3
--                             target  = "lowercasesansgreek",
--                             unicode = "lowercasegreeknormal",
--                         },
--                         {
--                             source  = { first = 0xE1BF, last = 0xE1D7 },
--                             target  = "uppercaseitalicsansgreek",
--                             unicode = "uppercasegreekitalic",
--                         },
--                         {
--                             source  = { first = 0xE1D8, last = 0xE1F0 }, -- maybe last = E1F5
--                             target  = "lowercaseitalicsansgreek",
--                             unicode = "lowercasegreekitalic",
--                         },
--                     },
--                 },
--                 {
--                     tweak    = "replacealphabets",
--                     filename = "TeXGyrePagellaMath.otf",
--                     list     = {
--                         { unicodes = { 0x007C, 0x2223, 0x2016, 0x2980, 0x007C } }, -- single single double triple
--                     }
--                 },
                presets.scripttocalligraphic  { },
                presets.rsfstoscript          { },
                presets.rsfsuprighttoscript   { },
                presets.moderntocalligraphic  { },
                presets.eulertocalligraphic   { },
                presets.xitsarabic            { rscale  = 0.95 },
                presets.fallbacks             { },
                presets.moveitalics           { correct = true },
                presets.moveitalics           { correct = true, letters = true },
                presets.moveintegrals         { },
                presets.wipeitalics           { },
                {
                    tweak = "checkaccents",
                },
                -- Extensibles use .s1 (variant 1), so we cannot wipe all
--                 {
--                     tweak = "wipevariants",
--                     list = {
--                         [0x20D6] = 3,
--                         [0x20D7] = 3,
--                         [0x20EE] = 3,
--                         [0x20EF] = 3,
--                     },
--                 },
                {
                    tweak = "simplifykerns",
                },
--                 {
--                     tweak = "kerns",
--                     list  = {
--                         [0x002F]                = { topleft  = -0.2,  bottomright = -0.2  },
--                         ["0x7D.parts.top"]      = { topright = -0.15,                     }, -- right brace top
--                         ["0x7D.parts.bottom"]   = {                   bottomright = -0.15 }, -- right brace bottom
--                         ["0x29.parts.top"]      = { topright = -0.1,                      }, -- right parenthesis top
--                         ["0x29.parts.bottom"]   = {                   bottomright = -0.1  }, -- right parenthesis bottom
--                         ["0x29.variants.*"]     = { topright = -0.2,  bottomright = -0.2  }, -- right parenthesis variants
--                         ["0x221A.parts.top"]    = { topright =  0.2,                      }, -- right radical top
--                         ["0x221A.parts.bottom"] = {                   bottomright =  0.2  }, -- right radical bottom
--                         ["0x221A.variants.*"]   = { topright =  0.2,  bottomright =  0.2  }, -- right radical variants
--                         [0x27E9]                = { topright = -0.1,  bottomright = -0.1  }, -- angle
--                         ["0x27E9.variants.*"]   = { topright = -0.2,  bottomright = -0.2  },
--                         [0x27EB]                = { topright = -0.1,  bottomright = -0.1  },
--                         ["0x27EB.variants.*"]   = { topright = -0.2,  bottomright = -0.2  },
--                         --
--                         ["0x222B.parts.bottom"] = { bottomright = -0.30 }, -- int
--                     },
--                 },
                -- Accents are a mess. We migrate the extensibles from the combiners to the base accent
                -- and then need to tweak the width (which is auto set because it was zero with a large
                -- accent anchor offset). First we copy and fix.
                {
                    tweak = "extendaccents",
                },
--                 {
--                     tweak   = "radicaldegreeanchors",
--                     list = {
--                         [0x221A]                = { location = "left", hfactor = 0.00, vfactor = 0.7 },
--                         ["0x221A.variants.*"]   = { location = "left", hfactor  = 0.00, vfactor = 0.55 },
--                         ["0x221A.variants.3"]   = { location = "left", hfactor  = 0.00, vfactor  = .525 },
--                         ["0x221A.parts.bottom"] = { location = "left", hfactor  = 0.05, vfactor  = 1.00 },
--                     }
--                 },
                {
                    tweak = "flattenaccents",
                },
                {
                    tweak = "fixaccents",
                },
--                 -- First we set the dimensions of the initial accent which started out as zero but we want
--                 -- a proper width.
--                 -- {
--                 --     tweak = "dimensions",
--                 --     list  = {
--                 --         [0x00302] = { width = 1.2, anchor = 1.10, xoffset = .05 }, -- widehat
--                 --         [0x00303] = { width = 1.4, anchor = 1.20, xoffset = .10 }, -- widetilde
--                 --         [0x00306] = { width = 1.4, anchor = 1.20, xoffset = .10 }, -- widebreve
--                 --         [0x0030C] = { width = 1.4, anchor = 1.20, xoffset = .10 }, -- widecheck
--                 --     },
--                 -- },
--                 -- Then we deal with all offsets and heights in one go. So we treat the initial accent
--                 -- as well as the variants here.
--                 {
--                     tweak = "dimensions",
--                     list  = {
--                      -- here we want to apply to all
--                         [0x020DB] = { yoffset =  0.025, height = .95, all = true }, -- widedddot : 0x20DB (self)
--                     },
--                 },
                -- We now copy these to the not wide slots so that we can set these to stretch as well,
                -- if only because it is less confusing and more consistent.
                {
                    tweak = "copyaccents",
                },
                -- So far for the accents.
                {
                    tweak = "checkspacing",
                },
                {
                    tweak = "addscripts",
                },
                {
                    tweak = "accentdimensions",
                },
                {
                    tweak = "addrules",
                },
                {
                    tweak = "addarrows",
                },
                {
                    tweak = "fixslashes",
                },
                {
                    tweak    = "replacerules",
--                     minus    = {
--                         height      = .233,
--                         yoffset     = .768,
--                         leftoffset  = .08,
--                         rightoffset = .08,
--                     },
--                     fraction = {
--                         height  = .233,
--                         yoffset = .768,
--                     },
--                     radical  = {
--                         height      = .233,
--                         yoffset     = .768,
--                         leftoffset  = .08,
--                         rightoffset = .08,
--                     },
--                     stacker  = {
--                         height  = .233,
--                         yoffset = .768,
--                     },
                },
                {
                    tweak = "addactuarian",
                },
                {
                    tweak = "addfourier",
                    variant = 1,
                },
                {
                    tweak = "addprimed",
                },
--                 {
--                     tweak = "addparts",
--                     list  = {
--                         [0x21F4] = {
--                             horizontal = true,
--                             template   = 0x2192,
--                             sequence   = {
--                                 { glyph = "first", factor = 2 },
--                                 { glyph = 0x2218 },
--                                 { glyph = "first", factor = 2 },
--                                 { glyph = "last"  },
--                             }
--                         }
--                     }
--                 },
--                 {
--                     tweak   = "addbars",
--                     advance = 0.3,
--                     check   = true, -- only add triples
--                 },
                -- this is the mkiv section
--                 {
--                     tweak   = "emulatelmtx",
--                     feature = "emulatelmtx",
--                     comment = "this is for mkiv",
--                 },
            },
        },
        bigslots = {
            1, 3, 5, 7
        },
    },
}