diff options
Diffstat (limited to 'luaotfload-colors.lua')
| -rw-r--r-- | luaotfload-colors.lua | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/luaotfload-colors.lua b/luaotfload-colors.lua index bc3d46f..ec076c2 100644 --- a/luaotfload-colors.lua +++ b/luaotfload-colors.lua @@ -6,6 +6,24 @@ if not modules then modules = { } end modules ['luaotfload-colors'] = { license = "GNU GPL v2" } +--[[doc-- +buggy coloring with the pre_output_filter when expansion is enabled + · tfmdata for different expansion values is split over different objects + · in ``initializeexpansion()``, chr.expansion_factor is set, and only + those characters that have it are affected + · in constructors.scale: chr.expansion_factor = ve*1000 if commented out + makes the bug vanish +--doc]]-- + + +local color_callback = config.luaotfload.color_callback +if not color_callback then + --- maybe this would be better as a method: "early" | "late" + color_callback = "pre_linebreak_filter" +-- color_callback = "pre_output_filter" --- old behavior, breaks expansion +end + + local newnode = node.new local nodetype = node.id local traverse_nodes = node.traverse @@ -225,7 +243,9 @@ node_colorize = function (head, current_color, next_color) --- loading (see ``setcolor()`` above) if tfmdata and tfmdata.properties and tfmdata.properties.color then local font_color = tfmdata.properties.color --- luaotfload.info(cnt, utf.char(n.char), n.font, "<TRUE>", font_color) +-- luaotfload.info( +-- "n: %d; %s; %d %s, %s", +-- cnt, utf.char(n.char), n.font, "<TRUE>", font_color) if font_color ~= current_color then local pushcolor = hex_to_rgba(font_color) local push = newnode(whatsit_t, 8) @@ -243,8 +263,11 @@ node_colorize = function (head, current_color, next_color) head = insert_node_after(head, n, pop) current_color = nil end + -- else --- luaotfload.info(cnt, utf.char(n.char), n.font, "<FALSE>") +-- luaotfload.info( +-- "n: %d; %s; %d %s", +-- cnt, utf.char(n.char), n.font, "<FALSE>") end end end @@ -273,7 +296,7 @@ local color_callback_activated = 0 --- unit -> unit add_color_callback = function ( ) if color_callback_activated == 0 then - luatexbase.add_to_callback("pre_output_filter", + luatexbase.add_to_callback(color_callback, color_handler, "luaotfload.color_handler") color_callback_activated = 1 |