A chart or SmartArt diagram in a DOCX was dropped on import: it took no
room, so the text after it moved up (five of the six chart documents in
docxide-pdf's fixtures came out a page short), and nothing was drawn.
They are now an InlineObject::Graphic: it takes its room, floats and
wraps like a picture, and draws a list of neutral items (shapes, paths,
one-line texts, pictures) that layout scales to the object's box.
- Charts (read/chart.rs) are drawn from the values the chart part
caches: clustered, stacked and 100% bar and column charts, line, area,
pie, doughnut and scatter charts, with title, legend, gridlines, axis
labels and Excel number and date formats.
- SmartArt (read/diagram.rs) is drawn from the drawing Word stores
beside the diagram: preset shapes, theme colours, text and pictures.
- Theme colour handling is shared (read/drawing_color.rs).
- Each chart or diagram part is read once, only through a relationship
of its type, under a per-file budget of items.
- Tagged PDF tags them as figures with their alternative text, and the
accessibility check reports charts without one.
Not yet: charts and diagrams aren't written back when saving a DOCX
(they weren't before either), so the editor doesn't let you move or
resize them. Radar, stock, 3-D and combination charts draw their first
supported chart type only; SmartArt pictures aren't clipped to their
shape.
docxide-pdf bench (365 documents, vs main + #135): page counts right
320 -> 326 (all five chart documents and one SmartArt document), Jaccard
passes 208 -> 215, SSIM passes 76 -> 79; eight documents better, none
worse.
Co-authored-by: Oliver Zieschang <4963183+naxvog@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
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