diff options
Diffstat (limited to 'otfl-font-msc.lua')
| -rw-r--r-- | otfl-font-msc.lua | 69 |
1 files changed, 53 insertions, 16 deletions
diff --git a/otfl-font-msc.lua b/otfl-font-msc.lua index 92d7422..c858e18 100644 --- a/otfl-font-msc.lua +++ b/otfl-font-msc.lua @@ -59,6 +59,7 @@ table.insert(fonts.triggers,"color") function initializers.common.color(tfmdata,value) if value then tfmdata.color = value + luaotfload.add_color_callback() end end @@ -114,27 +115,51 @@ 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 sbml = node.id('sub_mlist') -local function colorize(head) - for n in node.traverse(head) do +function luaotfload.node_colorize(head) + for n in node.traverse(head) do if n.id == hlist or n.id == vlist then - colorize(n.list) + n.list = luaotfload.node_colorize(n.list) end if n.id == glyph then local tfmdata = fonts.ids[n.font] if tfmdata and tfmdata.color then - local prev = n.prev - local next = n.next - local pushcolor, popcolor = hex_to_rgba(tfmdata.color) - if prev.id == glyph and fonts.ids[prev.font].color == tfmdata.color then + local prevg, nextg = n.prev, n.next + local found = nil + while prevg and not found do + if prevg.id == glyph then + found = 1 + elseif prevg.id == hlist or prevg.id == vlist or prevg.id == whatsit + or prevg.id == pgi or prevg.id == sbml then + prevg = nil + else + prevg = prevg.prev + end + end + found = nil + while nextg and not found do + if nextg.id == glyph then + found = 1 + elseif nextg.id == hlist or nextg.id == vlist or nextg.id == whatsit + or nextg.id == pgi or nextg.id == sbml then + nextg = nil + else + nextg = nextg.next + end + end + if prevg and fonts.ids[prevg.font].color == tfmdata.color then else + 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) end - if next.id == glyph and fonts.ids[next.font].color == tfmdata.color then + if nextg and fonts.ids[nextg.font].color == tfmdata.color then else + local _, popcolor = hex_to_rgba(tfmdata.color) local pop = node.new(whatsit, 8) pop.mode = 1 pop.data = popcolor @@ -146,14 +171,26 @@ local function colorize(head) return head end -local function finalize(head) - if res then - tex.pdfpageresources = format("%s\n/ExtGState<<%s>>", tex.pdfpageresources, res) - end - return head +function luaotfload.colorize(head) + local h = luaotfload.node_colorize(head) + if res then + tex.pdfpageresources = format("%s\n/ExtGState<<%s>>", tex.pdfpageresources, res) + end + return h end -callback.add("hpack_filter", colorize, "luaotfload.colorize") -callback.add("pre_linebreak_filter", colorize, "luaotfload.colorize") -callback.add("pre_output_filter", finalize, "loaotfload.finalize") +luaotfload.color_callback_activated = 0 +function luaotfload.add_color_callback() + if 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 |