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Dylan M. TaylorandJordi Altayó 5538d8a0d7 Add craft-pptx: the PresentationML model (from DeckCraft) (#1044)
* Add craft-drawingml: units, colours, preset shapes, custom geometry and text warps

The parts of DrawingML that need no document model, moved from DeckCraft
(60f91f78): crates/color, crates/geom (preset, warp, Xfrm and the EMU
conversions) and crates/pptx/src/custgeom.rs with CustomPath from
crates/model.

The code is unchanged except that custgeom reads craft-xml trees and writes
to a craft-xml Writer instead of DeckCraft's own XML helper, and matches
elements by local name. The 59 tests of the moved code come with it; six
more cover the custom geometry limits.

* drawingml: evaluate a custom geometry's guide lists once per coordinate space

read_cust_geom rebuilt Guides and evaluated avLst and gdLst again for every
path: up to 1,000 paths times up to 10,000 guides, each name copied and
hashed.

Guides are now cached per path coordinate space (w, h). At most 16 spaces
and 4 MiB of guide names are kept per geometry; paths in further spaces are
left out. The first space is always kept, and a geometry without guides is
not capped.

Ported from storytold/deckcraft#1789. A list counts as having guides only
when it has gd children, as that PR's review asked.

* drawingml: the model types for fills, lines, text, tables, charts and diagrams

Moved from DeckCraft (60f91f78) crates/model/src: style.rs, text.rs,
table.rs, chart.rs, numfmt.rs and trendline.rs, plus Diagram, DiagramNode
and the MediaId and SlideId newtypes from lib.rs.

The files are unchanged except that deckcraft_color:: is crate::color:: and
Fill and TableBorder allow clippy::large_enum_variant. Their 60 tests come
with them. Readers and writers follow.

* drawingml: the theme model (colour, font and format schemes)

Moved from DeckCraft crates/model/src/theme.rs at 60f91f78: FontSet, ScriptFont, FontScheme,
FormatScheme, Theme and default_format. The app's theme gallery, its variants and its own default
theme stay in the app. Theme::default() is a plain theme built in place, so nothing here depends
on a gallery.

* drawingml: readers and writers for fills, lines, text, charts, themes, table styles and diagrams

Moved from DeckCraft crates/pptx/src at 60f91f78: read/dml.rs, write/dml.rs, read/chart.rs,
read/chartex.rs, write/chart.rs, read/theme.rs, write/theme.rs, tables.rs and dgm.rs, onto
craft-xml. Package lookups (Imp, Part, Exp, Out) are the caller's part::Source and part::Sink.
The chart frame budget and kept-part capture stay with the presentation reader.

* drawingml: what WordCraft and GridCraft read that DeckCraft's copy did not

Every ST_PresetColorVal name has its colour, in any case and with the dk/lt/med abbreviations;
a sysClr without lastClr takes the usual value of its name; a Strict percentage (50%) reads
anywhere a percentage does; a chart series keeps its c:f formulas and the writer uses them.

* craft-drawingml: extra named theme colours and explicit tint rows

Ported from the format part of storytold/deckcraft#1746 by @jagjordi: ColorScheme::{extra, tints,
computed_tints}, ExtraColor, GalleryVariant, variants_of, and the a:clrScheme extension that
keeps them in a file.

* drawingml xmlx: copy only used, bounded namespace declarations onto kept fragments and mc branches

From storytold/deckcraft#1740 (988a4920), which landed after the extraction commit 60f91f78.

* Add craft-pptx: the PresentationML model (from DeckCraft)

Presentation, masters, layouts, slides, shapes, placeholders, media,
comments, sections, show settings, properties, embedded fonts, kept parts
and drawing guides from DeckCraft's crates/model/src/lib.rs, and
transitions and animations from anim.rs. The DrawingML types come from
craft-drawingml. The placeholder matching from DeckCraft's resolve.rs
moves as placeholder::parents, without the rest of resolve.

Presentation::default() is now an empty 16:9 deck with no masters; the
starting deck stays with the application.

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Co-authored-by: Jordi Altayó <jordiag@kth.se>
2026-11-11 21:04:26 -05:00
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