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author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /macros/luatex/latex/showhyphens/showhyphens.sty |
Initial commit
Diffstat (limited to 'macros/luatex/latex/showhyphens/showhyphens.sty')
-rw-r--r-- | macros/luatex/latex/showhyphens/showhyphens.sty | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/macros/luatex/latex/showhyphens/showhyphens.sty b/macros/luatex/latex/showhyphens/showhyphens.sty new file mode 100644 index 0000000000..38d1d2603a --- /dev/null +++ b/macros/luatex/latex/showhyphens/showhyphens.sty @@ -0,0 +1,68 @@ +\ProvidesPackage{showhyphens}[2016/02/19 v0.5c Show hyphenation points (PGU)] +\RequirePackage{ifluatex,luatexbase} +% License: MIT style license + +% Copyright (c) 2011-2016 Patrick Gundlach patrick@gundla.ch + +% Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the +% "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, +% publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do +% so, subject to the following conditions: +% +% The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. +% +% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +% MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE +% FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +% WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +\def\lua@SHcolor{1 0 0}% red +\DeclareOption{blue}{\def\lua@SHcolor{0 0 1 }}% must be a rgb color +\ProcessOptions + +\ifluatex +\directlua{ +local show_hyph +local hlist_node = node.id("hlist") +local vlist_node = node.id("vlist") +local disc_node = node.id("disc") +local glyph_node = node.id("glyph") + +local function round(num) + return math.floor(num * 10^3 + 0.5) / 10^3 +end + +show_hyph = function(head) + while head do + if head.id == hlist_node or head.id == vlist_node then + show_hyph(head.list) + elseif head.id == disc_node then + if head.replace and head.replace.id == glyph_node and head.replace.components then + local wd = round(head.replace.width / 65781) or 0 + local ht = round(head.replace.height / 65781) + 0.5 or 0 + local r = node.new("whatsit","pdf_literal") + r.data = "q 0.3 w 0 " .. tostring(ht) .. " m " .. tostring(-wd) .. " " .. tostring(ht) .. " l S Q" + node.insert_after(head.replace,head.replace,r) + else + local n = node.new("whatsit","pdf_literal") + n.mode = 0 + n.data = "q \lua@SHcolor RG 0.3 w 0 2 m 0 7 l S Q" + n.next = head.next + head.next.prev = n + n.prev = head + head.next = n + head = n + end + end + head = head.next + end + return true +end + + +luatexbase.add_to_callback("post_linebreak_filter",show_hyph,"show_hyph") +} +\else +\errhelp{Please use LuaLaTeX when you require the package 'showhyphens'} +\errmessage{Package showhyphens error: This works only with LuaLaTeX!} +\fi |