Decorative part title page.

[no-vici]

Hi typographers,

I would like to have a part title page that looks similar to the below screenshot.

Would it this be possible in resilient style module in the future? Some thing like this would be nice:

sectioning-part:
  inherit: "sectioning-base"
  origin: "resilient.book"
  style:
    font:
      size: "3em"
      weight: 500
    paragraph:
      after:
        skip: "bigskip"
      align: "right"
      before:
        skip: "25%fh"
        img: /path/to/image
        img-size: "25%fw"
        img-align: left

[Omikhleia]

I am not sure that styling is the best approach for such "advanced" things -- The styling paradigm is already a complex beast, and having images in styles would make it even more complex. Sure, CSS goes into that direction (sort of), but that's not so obvious in a general approach...

Another possible approach for such things would be templates. The next version of resilient (soon to land, now) experiments with template pages for "book matters" (half-title pages, title pages, end-papers), but maybe it could be generalized eventually. (I also have an experimental "slides" class, not ready for prime time in any way at this point, which nevertheless uses similar templates too for certain types of slides, which could be regarded as equivalent to "parts").

Would it this be possible in resilient style module in the future?

Probably not - the resilient styles package is mostly for character and paragraph styles.
Sectioning commands extend upon it with the resilient sectioning package, so the latter could be a better fit...
Or not -- other packages (lists, tableofcontents, etc.) also extend the styling paradigm for their need -- I tend to look at things as "puzzle pieces" that assemble in various ways, so perhaps we'd need another fancy piece here ;)

Please feel free to try things, however. I initiated the current styling paradigm in resilient some 1.5 years ago, and it took various forms before the one finally proposed here. What I mean is that these things just take time ;-)

[no-vici]

I am not sure that styling is the best approach for such "advanced" things -- The styling paradigm is already a complex beast, and having images in styles would make it even more complex. Sure, CSS goes into that direction (sort of), but that's not so obvious in a general approach...

It looks and sounds obviously simple (an image above a line of text), and can see that if images are introduced into the styles, they would make the styles messy. I've dived into the code of the style package and don't quite get its complexity.

Another possible approach...
Can't wait to see the book matter mechanism.
Please feel free to try things, however. I initiated the current styling paradigm in resilient some 1.5 years ago, and it took various forms before the one finally proposed here. What I mean is that these things just take time ;-)

It not just takes time but a lot of time, and we as average users are grateful for your valuable time and hard work for taking the resilient class to this stage. I will look into the section package to see what I can do, or just make a part tile page separately and manually replace the one made by SILE with it if there are no better choices ;)
I'm thinking about a script for the rows of dots under a line of text.

[Omikhleia]

I've dived into the code of the style package and don't quite get its complexity.

You are right, supporting an image as above would be doable.

But try to put a color in a paragraph style, and you may see (sometimes, but not always!) blank lines being inserted in the document. Colors introduce boxes, and I though I had handled them, but the nesting logic has a flaw somewhere. I've not tracked the issue, because colors are not critical for book making, but you can see why slides could be concerned. There other similar subtle issues with paragraphing and line height (leading). The whole style:apply:paragraph logic is pretty fragile, despite having been rewritten nearly 3 times ;-)

[no-vici]

Colors introduce boxes

Thank you, I did not notice that ;)

The whole style:apply:paragraph

This could have been the problem I had.

\rebox[phantom=true]{Beginning of page marker}
\skip[height=0.25cm]

\font[size=36pt, weight=500, style=italic]{
NƯỚC MẮT\skip[height=0.3cm]
TRƯỚC\skip[height=0.3cm]
CƠN\skip[height=0.3cm]
MƯA\par
}

\skip[height=2cm]

\font[size=28pt, weight=500, style=italic]{
\thinspace Một khẩu vấn sử liệu\par\par
\thinspace về sự sụp đổ\par\par
\thinspace của Nam Việt Nam\par
}

\skip[height=3cm]
\quad\enspace LARRY ENGELMANN
\vfill
\skip[height=5cm]
\vfill
\font[size=12pt]{
\qquad\enspace New York\quad Oxford\par
\qquad\enspace OXFORD UNIVERSITY PRESS\par
\qquad\enspace 1990
}

\supereject

[no-vici]

It turns out to be dead easy by switching off the setting for opening on odd page for sectioning-part and insert the graphics before the part section, it works for chapter sectioning too ;)

Part:

Chapter:

\open-on-odd-page
\rebox[phantom=true]{Beginning of page marker}\skip[height=1.5cm] 
\img[src=graphics/part_01_logo.svg, width=50%pw]
\part[numbering=false]{Part title}

Your style package is awesome!

Thank you.