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-rw-r--r--otfl-font-msc.lua166
1 files changed, 0 insertions, 166 deletions
diff --git a/otfl-font-msc.lua b/otfl-font-msc.lua
deleted file mode 100644
index d7cfe20..0000000
--- a/otfl-font-msc.lua
+++ /dev/null
@@ -1,166 +0,0 @@
-if not modules then modules = { } end modules ['font-msc'] = {
- version = 1.001,
- comment = "companion to font-otf.lua (slanting, extending, colors)",
- author = "Khaled Hosny",
- copyright = "Khaled Hosny",
- license = "GPL"
-}
-
---[[
- Support for font color.
---]]
-
-table.insert(fonts.triggers,"color")
-
-function initializers.common.color(tfmdata,value)
- if value then
- tfmdata.color = value
- luaotfload.add_color_callback()
- end
-end
-
-initializers.base.otf.color = initializers.common.color
-initializers.node.otf.color = initializers.common.color
-
-local function hex2dec(hex,one)
- if one then
- return format("%.1g", tonumber(hex, 16)/255)
- else
- return format("%.3g", tonumber(hex, 16)/255)
- end
-end
-
-local res
-
-local function pageresources(a)
- local res2
- if not res then
- res = "/TransGs1<</ca 1/CA 1>>"
- end
- res2 = format("/TransGs%s<</ca %s/CA %s>>", a, a, a)
- res = format("%s%s", res, res:find(res2) and "" or res2)
-end
-
-local function hex_to_rgba(hex)
- local r, g, b, a, push, pop, res3
- if hex then
- if #hex == 6 then
- _, _, r, g, b = hex:find('(..)(..)(..)')
- elseif #hex == 8 then
- _, _, r, g, b, a = hex:find('(..)(..)(..)(..)')
- a = hex2dec(a,true)
- pageresources(a)
- end
- else
- return nil
- end
- r = hex2dec(r)
- g = hex2dec(g)
- b = hex2dec(b)
- if a then
- push = format('/TransGs%g gs %s %s %s rg', a, r, g, b)
- pop = '0 g /TransGs1 gs'
- else
- push = format('%s %s %s rg', r, g, b)
- pop = '0 g'
- end
- return push, pop
-end
-
-local glyph = node.id('glyph')
-local hlist = node.id('hlist')
-local vlist = node.id('vlist')
-local whatsit = node.id('whatsit')
-local pgi = node.id('page_insert')
-local sbox = node.id('sub_box')
-
-local function lookup_next_color(head)
- for n in node.traverse(head) do
- if n.id == glyph then
- if fonts.ids[n.font] and fonts.ids[n.font].color then
- return fonts.ids[n.font].color
- else
- return -1
- end
- elseif n.id == vlist or n.id == hlist or n.id == sbox then
- local r = lookup_next_color(n.list)
- if r == -1 then
- return -1
- elseif r then
- return r
- end
- elseif n.id == whatsit or n.id == pgi then
- return -1
- end
- end
- return nil
-end
-
-function luaotfload.node_colorize(head, current_color, next_color)
- for n in node.traverse(head) do
- if n.id == hlist or n.id == vlist or n.id == sbox then
- local next_color_in = lookup_next_color(n.next) or next_color
- n.list, current_color = luaotfload.node_colorize(n.list, current_color, next_color_in)
- elseif n.id == glyph then
- local tfmdata = fonts.ids[n.font]
- if tfmdata and tfmdata.color then
- if tfmdata.color ~= current_color then
- local pushcolor = hex_to_rgba(tfmdata.color)
- local push = node.new(whatsit, 8)
- push.mode = 1
- push.data = pushcolor
- head = node.insert_before(head, n, push)
- current_color = tfmdata.color
- end
- local next_color_in = lookup_next_color (n.next) or next_color
- if next_color_in ~= tfmdata.color then
- local _, popcolor = hex_to_rgba(tfmdata.color)
- local pop = node.new(whatsit, 8)
- pop.mode = 1
- pop.data = popcolor
- head = node.insert_after(head, n, pop)
- current_color = nil
- end
- end
- end
- end
- return head, current_color
-end
-
-function luaotfload.colorize(head)
- -- check if our page resources existed in the previous run
- -- and remove it to avoid duplicating it later
- if res then
- local r = "/ExtGState<<"..res..">>"
- tex.pdfpageresources = tex.pdfpageresources:gsub(r, "")
- end
- local h = luaotfload.node_colorize(head, nil, nil)
- -- now append our page resources
- if res and res:find("%S") then -- test for non-empty string
- local r = "/ExtGState<<"..res..">>"
- tex.pdfpageresources = tex.pdfpageresources..r
- end
- return h
-end
-
-luaotfload.color_callback_activated = 0
-local message_displayed = 0
-
-function luaotfload.add_color_callback()
- if tex.luatexversion < 44 then
- if message_displayed == 0 then
- luatextra.module_warning("luaotfload","You must have a LuaTeX with version >= 0.44 in order to get colors working, colors won't work.")
- message_displayed = 1
- end
- elseif luaotfload.color_callback_activated == 0 then
- callback.add("pre_output_filter", luaotfload.colorize, "loaotfload.colorize")
- luaotfload.color_callback_activated = 1
- end
-end
-
-function luaotfload.remove_color_callback()
- if luaotfload.color_callback_activated == 1 then
- callback.remove("pre_output_filter", "loaotfload.colorize")
- luaotfload.color_callback_activated = 0
- end
-end