Pictures: WMF and EMF draw, with the metafile reader ported from WordCraft (#317)

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

docs/file-format-parity.md

@@ -38,7 +38,7 @@ PowerPoint opens and saves; Viewer = opens only).
 |---|---|---|---|
 | PNG, JPEG, GIF (animated), BMP, TIFF, WebP | yes | yes | `image` 0.25; animated GIFs play since #39 |
 | SVG | yes (with PNG fallback) | **no** | The PNG fallback shows; SVG files can't be inserted |
-| EMF / WMF | yes | **no** | Common in decks made on Windows: blank picture |
+| EMF / WMF | yes | partial | Drawn as vectors (paths, pens, bitmaps); text records inside are skipped |
 | HEIC | yes (macOS) | no | |
 | Audio: MP3, AAC/M4A, ALAC, WAV, AIFF, CAF, FLAC, Ogg Vorbis, Opus | yes (Ogg/Opus partly) | yes | Pure-Rust decoders in `crates/media`, `crates/opus` |
 | WMA | yes (Windows) | embedded, not playable | |
@@ -93,7 +93,7 @@ the round trip even though DeckCraft doesn't model it.
    embedded fonts, every transition and animation) in a corpus repo, with import → render → export
    → re-import checks in CI and a PowerPoint reference render for each (owner runs PowerPoint).
 2. The round-trip losses above (#70, #74, #77).
-3. EMF/WMF and SVG rendering.
+3. SVG rendering, and text inside EMF/WMF.
 
 ## Revision history
 

docs/gaps.md

@@ -20,7 +20,7 @@ revision history.
 | 1 | PPTX never tested against a corpus of real decks | File format | B | 20–35 | [file-format-parity.md](file-format-parity.md) |
 | 2 | Data loss and crashes on common paths (#60, #40, #59) | Stability | B | 6–12 | this file |
 | 3 | PPTX round trip drops comment threads, media options, rewind (#70, #74, #77) | File format | B | 3–6 | [file-format-parity.md](file-format-parity.md) |
-| 4 | EMF/WMF and SVG pictures don't render | File format | B | 8–14 | [file-format-parity.md](file-format-parity.md) |
+| 4 | SVG pictures don't render (EMF/WMF do) | File format | B | 8–14 | [file-format-parity.md](file-format-parity.md) |
 | 5 | No localization: English only | Localization | B (infra + 5 languages) | 55–90 | [localization-parity.md](localization-parity.md) |
 | 6 | No printing | Feature | B | 5–8 | [file-format-parity.md](file-format-parity.md) |
 | 7 | Fonts: only Regular, Bold and Italic faces (#69) | Feature | B | 3–5 | [ui-parity.md](ui-parity.md) |
@@ -75,14 +75,14 @@ Detail in [file-format-parity.md](file-format-parity.md).
 - **Impact:** a deck opened and saved silently loses review state and show behaviour.
 - **Estimate:** 3–6 h. **Beta blocker.**
 
-### EMF/WMF and SVG pictures don't render
+### SVG pictures don't render
 - **Evidence:** `crates/render/src/images.rs` decodes through `image` 0.25 (PNG, JPEG, WebP, GIF,
-  TIFF, BMP); nothing reads EMF, WMF or SVG. Decks from Windows often hold EMF (pasted charts,
-  Visio, logos); PowerPoint's Insert Icons stores SVG with a PNG fallback.
-- **Impact:** blank pictures in real decks; SVG icons show only their raster fallback, and SVG files
-  can't be inserted.
-- **Estimate:** 8–14 h (an SVG renderer through `resvg`-style crates, an EMF/WMF record player for
-  the common records). **Beta blocker** for EMF.
+  TIFF, BMP), and EMF/WMF through `deckcraft-metafile` (ported from WordCraft: paths, fills, pens
+  and bitmaps; text records are skipped). Nothing reads SVG; PowerPoint's Insert Icons stores SVG
+  with a PNG fallback.
+- **Impact:** SVG icons show only their raster fallback, and SVG files can't be inserted. Text
+  drawn inside an EMF/WMF is missing.
+- **Estimate:** 4–8 h (an SVG renderer through `resvg`-style crates); EMF text records 2–4 h.
 
 ### Template, slide-show and macro variants are saved as plain `.pptx`
 - **Evidence:** `crates/pptx/src/write/mod.rs` always writes the

docs/roadmap.md

@@ -16,7 +16,7 @@ points and lead the beta plan.
 | Core workflow | Works end to end? | Evidence | Hours to full pass |
 |---|---|---|---|
 | Build a deck from scratch (theme, layouts, titles and bullets, shapes, pictures from file), save, close and reopen it | yes | Commands for all of it; `.deckcraft` and `.pptx` round-trip tests (`crates/pptx/tests/roundtrip.rs`, `crates/format`); AutoRecover. Close discards edits without asking (#60, PR #75); image *paste* fails on Windows/Linux (#53), though insert-from-file works | 1–3 |
-| Open a colleague's `.pptx`, edit it, save it back as `.pptx` that PowerPoint opens | partial (not blocking) | The reader is lenient and keeps unknown objects. Files open in PowerPoint without repair (checked 2026-10-06). But only generated decks have been tested; EMF/WMF pictures render blank; comment threads, media options and rewind are lost (#70, #74, #77) | 31–55 |
+| Open a colleague's `.pptx`, edit it, save it back as `.pptx` that PowerPoint opens | partial (not blocking) | The reader is lenient and keeps unknown objects. Files open in PowerPoint without repair (checked 2026-10-06). But only generated decks have been tested; text inside EMF/WMF pictures is missing; comment threads, media options and rewind are lost (#70, #74, #77) | 31–55 |
 | Present: full-screen show with transitions, animations, media, presenter view with notes, next slide and timer | yes | 48/48 transitions, 64 effects, triggers, builds, media playback, presenter window. Presenter view isn't placed on the second display automatically (drag it there) | 3–5 |
 | Add business content: tables, charts with their data, simple diagrams | partial (not blocking) | Tables with styles, merge/split, all D or P. Charts insert with the common types and edit data in the Chart Data dialog (P0 partial); SmartArt is basic (pre-drawn shapes) | 12–20 |
 | Share the deck: PDF of slides, notes or handouts; images | yes | `file.export` PDF with text layer, links, bookmarks, handouts 1–9; PNG/JPEG. Artwork is raster in the PDF; no direct print (print the PDF) | 10–16 |