Introduction In this example we will use the “post_linebreak_filter” to iterate over all the lines in a typeset paragraph and use the data provided by LuaTeX to insert pdf_literal nodes which draw a box to show the size of the…
Introduction In this article I’ll show a technique for producing crop marks using the MetaPost library (MPlib) which is built into LuaTeX. There is a lot of ground to cover so I’ll try to focus on/summarise the most important/useful areas…
Introduction This is a short example to introduce two very useful LuaTeX API functions which let you work with low-level PDF objects. Here we’ll use them to explore a PDF feature called pattern fills which (from the PDF specification) are…
Adobe’s PDF reader (Adobe Reader) is certainly a very nice tool for viewing PDFs but it has one annoying “feature” (certainly on Windows): it puts some form of “lock” on the PDF file you are viewing. If you have the…
Introduction As mentioned in a previous post, LuaTeX provides a facility called callbacks in which you write a Lua function (your callback) and register it with LuaTeX through the callback.register() API function. callback.register() takes two parameters: A predefined callback name:…
Introduction As I explore more of LuaTeX I’m constantly amazed by its versatility. Over the last few days I have been reading about \output routines which are, deservedly, deemed some of the more complex parts of TeX. Caveat to readers:…