feat(presentations): continue the blog post

- introduction for reveal.js
- draft for customisation
- rewrite some other parts

content/tips/presenting.md

@@ -7,7 +7,7 @@ Tags: presentation, vim, latex
 Slug: presenting
 Header_Cover: ../images/covers/pts24-talk.jpg
 Summary: Some of the tools I use for making and giving presentations.
-Lang: en
+lang: en
 ---
 
 # Introduction
@@ -16,12 +16,13 @@ Over the past year, I have to give quite a few presentations in different
 contexts: internal to the company, for open-source conferences, for business
 conferences…
 
-I use this opportunity to refine a bit my presentation tools, and I just
-summarize them here for curious people.
+I used these different opportunities to refine a bit my presentation tools, and
+I just summarize them here for curious people. Please note that this blog post
+will only cover the tooling needed to produce slides, not what to put inside.
 
-This page may be updated, for instance if I start using [typst] for slide
-making. If you have subscribed to this blog’s [RSS feed], you will be notified
-of future updates.
+This page may be updated, for instance if I start using yet another tool for
+slide making that I think is worth mentioning. If you have subscribed to this
+blog’s [RSS feed], you will be notified of future updates.
 
 # Making Slides
 
@@ -36,14 +37,17 @@ documents, and presentations are not an exception. For this purpose I’m using
 [beamer].
 
 For this purpose, my [vim setup for LaTeX] proved to be pretty useful,
-especially with the “on save compilation”. However, the backward search is not
-very accurate with beamer slides.
+especially with the “compilation on save” feature. It allows me to have an
+already set up text editor for LaTeX without having to fiddle and twiddle with
+multiple setups. However, the backward search is not very accurate with beamer
+slides.
 
 ### Overlays and Graphics
 
 The main advantage, besides my familiarity with [LaTeX], lays in the [overlay]
 system in beamer, that is quite powerful and provides a very precise way to
-display elements, especially with [TikZ] to design animated graphics.
+display elements. This overlay mechanism also compounds well with [TikZ] to
+design animated graphics.
 
 For instance in the example below, I can show the top part of the graph
 initially, then the bottom, and change the name of the last node for the second
@@ -76,17 +80,17 @@ Resulting in:
 Moreover, you have access to the whole latex ecosystem, especially those for
 neat illustrations such as [tikzpingus].
 
-**Note:** I have to say that the above technique is unsafe under fairly
-reasonnable assumptions. Long story short you should sign first *then* encrypt
+**Note:** I feel compelled to say that the above technique is unsafe under fairly
+reasonable assumptions. Long story short you should sign first *then* encrypt
 and not do both in parallel. Please see [this paper](https://ia.cr/2001/045)
-from Crypto’01 if you want a more detailed explanation.
+from the Crypto 2001 conference if you want a more detailed explanation.
 
 ### Customisation
 
 It is also quite easy to customise slides with beamer. For instance, with
 [metropolis], from its
 [documentation](https://ctan.tetaneutral.net/macros/latex/contrib/beamer-contrib/themes/metropolis/doc/metropolistheme.pdf),
-section 8 describe where to find specific colours. As for the fonts, if you are
+section 8 describes where to find specific colours. As for the fonts, if you are
 using xelatex/lualatex, a simple `\setmainfont` suffices to redefine it.
 
 For instance, if I want to have the alert text in orange:
@@ -113,6 +117,52 @@ than they are.
 settings to generate them are liberally inspired by [Pablo
 Coves](https://pcoves.gitlab.io/blog/pandoc-markdown-revealjs/).
 
+[Pandoc] on the other hand is a document converter tool that supports a very
+extensive spectrum of formats and syntaxes. My most use case is to convert
+markdown to some other reflowable format (usually HTML, and sometimes EPUB).
+
+Using both in conjunction allows for quick and dynamic presentations which don’t
+require _accuracy_ in placements. That may be the case for lightning talks for
+instance. The main advantage compared to the two above solutions is that
+[reveal.js] takes advantage of web browser capabilities to produce dynamic
+transitions. Those are otherwise hard to get from PDFs (some people made custom
+PDF reader for that).
+
+I know that it’s also possible to use [pandoc] to produce directly [beamer] slides
+for instance, thus benefiting from the simpler [Markdown] syntax while having
+[LaTeX] as an engine. I however find this approach too rigid. It is indeed easy
+to feed some LaTeX‑specific commands via the YAML header, e.g., for styling.
+Unfortunately, when the need arises to do some specific positioning on a slide
+for example, then we end up with some markdown-TeX mix that I found deeply
+inelegant. That’s why I usually stick to LaTeX (or more recently [typst]) to
+produce PDFs, as these tools are designed with an awareness of the page layout
+(which blends well into the language). This property is not the case with
+[Markdown], which is a markup language for text formatting (not typesetting).
+
+### Ease of use
+
+### Speaker view
+
+One of the advantage of [reveal.js] is the built-in [speaker view]. It spans a
+pop-up with useful pieces of information for the speaker: a chronometer, a preview of the
+upcoming slide and notes if there are any.
+
+Its behaviour is similar to what you can have with `pdfpc` that I’ll show later
+for PDF slides.
+
+![](/examples/revealjs-speakerview.png "Speaker View")
+
+### Customisation
+
+- List of default [reveal.js styles]
+- Simple customisation with CSS:
+  <https://gist.github.com/jsoma/629b9564af5b1e7fa62d0a3a0a47c296#styling> see
+  <https://github.com/hakimel/reveal.js/blob/master/css/theme/template/exposer.scss>
+  as well for exposed variables.
+- However, in standalone mode, changing the font does not work well…
+- Create custom theme: <https://github.com/hakimel/reveal.js/blob/master/css/theme/README.md>
+  - <https://github.com/Chouhartem/reveal.js/tree/cryptpad-theme>
+
 # Presenting Slides {#presenting-slides}
 
 ## wl-mirror
@@ -130,3 +180,8 @@ Coves](https://pcoves.gitlab.io/blog/pandoc-markdown-revealjs/).
 [TikZ]: https://www.ctan.org/pkg/pgf
 [tikzpingus]: https://github.com/EagleoutIce/tikzpingus
 [reveal.js]: https://revealjs.com/
+[reveal.js styles]: https://revealjs.com/themes/
+[pandoc]: https://pandoc.org/
+[metropolis]: https://github.com/matze/mtheme
+[markdown]: https://en.wikipedia.org/wiki/Markdown
+[speaker view]: https://revealjs.com/speaker-view/