* Sprint 1: bidi and Arabic typography engine
fonts: ISO 15924 script and a:latin/a:ea/a:cs slot classification;
shape_range shapes an item with the whole paragraph as HarfRust
pre/post context, explicit script/language/direction, glyphs kept in
visual order; per-grapheme-cluster fallback (slot face, theme script
font, OS cascade families, bundled craft-fonts face); GDEF ligature
carets.
text: UAX #9 levels for the whole paragraph (a:pPr/@rtl), itemization
by level, script, face and shaping style (paint-only changes no longer
split words), logical line breaking at cluster boundaries, per-line
L1/L2 reordering (L4 mirroring by the shaper); RTL start edge and
bullets, justLow kashida; caret Affinity, logical/visual movement,
bidi hit testing and selection as the union of visual boxes.
model/pptx: theme a:font script fonts and algn="justLow" round-trip.
engine: format.rtl (Right-to-Left Text Direction), justifyLow align.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Fonts: the bundled script face comes before installed fonts; no Microsoft family names
Arabic, Hebrew, Thai and Devanagari clusters try the craft-fonts face first, so every machine
draws the same, then openly licensed or OS-native installed families, then any installed face.
Installed Microsoft faces are still used through that scan, but not named (AGENTS.md §1.1).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Tayeb <tayeb@192.168.11.179>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
* Tables: rows grow to fit their text, cell text in the PDF text layer (#13)
A stored row height (a:tr/@h) is a minimum, as in PowerPoint: each row grows so its cells' text fits. Tables from pandoc or python-pptx store h="0" and drew every row on top of each other. Cell editing (click to edit, cell outline) uses the same heights, and the PDF text layer now includes table cell text.
* Tables: a grown table's box covers its drawn rows; resize scales from drawn heights
Handles, hit tests and marquee used the stored frame, so rows grown to fit their text drew
below the selection box (a file with h=0 rows had a 0 pt tall box). Resizing divided by the
stored row total, which is ~0 for those files.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Brandon Thomas <echelon@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* Morph: shapes move, resize and blend in the slide show
Morph used to fall back to a plain crossfade in the show: morph_pairs and
morph_xfrm existed, but nothing rendered frames with them.
- anim: morph_frame builds a frame from two slides. Paired shapes move along
morph_xfrm (eased); a pure fill colour change blends, other content changes
cross-fade on the same moving box. Unpaired shapes fade out/in, shapes with
entrance animations or hidden media stay out of the frame.
- render: render_blend draws such a frame in one pass: both backdrops
(background, master and layout graphics) cross-fade, every shape resolves
against the slide it comes from, so placeholders keep their own layout.
Renderer::slide is split into canvas/fields/backdrop to share the code.
- ui-egui: the show renders morph frames with these, crossfade otherwise.
generated with Claude Code
* Contributors: add my own entry (alexanderalber)
generated with Claude Code
* Morph: Words and Characters options morph text token by token
The transition option (objects/words/characters) was stored and round-tripped
but ignored by the show. With Words or Characters, paired shapes whose text
differs now morph their text instead of cross-fading it:
- text: GlyphRun records per glyph the paragraph character it draws, so
glyphs can be grouped into words or characters.
- anim: morph_frame reads the option and lists such pairs in MorphFrame::text.
- render: morph_text draws them. Shared words (or characters) travel from their
place in the old text to their place in the new one and grow or shrink to the
new size; a different look cross-fades on the way. The remaining tokens fade
while following a scale and shift fitted to the shared ones, so a line moves
and rearranges as one. Rotated text falls back to a cross-fade.
draw_layout_with's glyph drawing moved into draw_glyph for reuse.
- ui-egui: the show passes the pairs to render_blend.
generated with Claude Code
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Co-authored-by: Brandon Thomas <echelon@gmail.com>
