diff options
Diffstat (limited to 'otfl-font-msc.lua')
| -rw-r--r-- | otfl-font-msc.lua | 166 |
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 |