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Merge PR #603 from NikitkaRa: Render: draw chart trendlines
# Conflicts: # crates/render/src/chart.rs
This commit is contained in:
Brandon Thomas
@@ -9,6 +9,7 @@
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> **Last reviewed:** 2026-10-13 · **Last updated:** 2026-10-13 · **Change:** minor (owned corpus for text effects, body layout, theme effects, fills, bevels and connectors; a run's inner shadow, reflection and soft edge, and a bevel preset with no kept 3-D XML, survive a save; previous: trivial, groups with a small legacy child coordinate space) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** minor (3-D model parts and animation bounce end round-trip; `corpus_media.rs` covers SmartArt and OLE XML, media bookmarks and trims, sections, fields, ink and timing) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** minor (chart trendlines round-trip; previously trivial: groups with a small legacy child coordinate space draw outlines, dashes, arrowheads and ink at their own width (#233); formats taken from PowerPoint 16.113.4's Info.plist, PPTX coverage measured from `crates/pptx`) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** minor (chart trendlines are drawn; previously minor: chart trendlines round-trip; groups with a small legacy child coordinate space draw outlines, dashes, arrowheads and ink at their own width (#233); formats taken from PowerPoint 16.113.4's Info.plist, PPTX coverage measured from `crates/pptx`) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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Every format PowerPoint reads or writes, DeckCraft's support, fidelity and how it is tested.
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Gaps are itemized in [gaps.md](gaps.md#file-formats). Dimension score: **~58% ready**
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@@ -88,7 +89,7 @@ the round trip even though DeckCraft doesn't model it.
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| Text warp (`prstTxWarp`) | yes | yes | All 40 presets rendered (`crates/geom/src/warp.rs`); adjust values (`avLst`) round-trip |
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| Pictures with crop, recolour, duotone, alpha, luminance | yes | yes | |
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| Tables with styles | yes | yes | Merges and both diagonal borders round-trip |
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| Charts (`c:chartSpace`) | yes | yes | Original XML kept in `Chart.raw`. Trendlines (type, order or period, forecast, intercept, equation and R²) are read and written; they are not drawn. A combo chart's secondary value axis is read and is not written back when the chart is rebuilt |
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| Charts (`c:chartSpace`) | yes | yes | Original XML kept in `Chart.raw`. Trendlines (type, order or period, forecast, intercept, equation and R²) are read, written and drawn. A combo chart's secondary value axis is read and is not written back when the chart is rebuilt |
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| Charts (`cx:` chartex: waterfall, funnel, treemap, sunburst, histogram, box) | no | no | |
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| SmartArt (`dgm`) | drawing part only, as a group; text laid out on its `dsp:txXfrm` rectangle | as shapes | Diagram data model lost on save |
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| SmartArt (`dgm`) | drawing part only, as a group | as shapes | Diagram data model lost on save. A diagram with no relationship parts keeps its XML; the drawing and data parts are still dropped (#203) |
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@@ -128,6 +129,7 @@ the round trip even though DeckCraft doesn't model it.
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| 2026-10-13 | minor | Owned corpus for comments, links and actions, custom shows, rotated groups and inherited placeholders. Paragraph `defRPr` and action sounds (including custom-show return) survive a save |
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| 2026-10-13 | minor | Owned corpus for text effects, body layout, theme effects, fills, bevels and connectors. A run's inner shadow, reflection and soft edge, and a bevel preset with no kept 3-D XML, survive a save |
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| 2026-10-14 | minor | 3-D models (`.glb`) round-trip, including an alternate-content fallback picture; animation bounce end is read and written (`corpus_media.rs`) |
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| 2026-10-14 | minor | Chart trendlines are drawn (linear, exponential, logarithmic, polynomial, power, moving average, forecast, equation and R²) |
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| 2026-10-14 | minor | Chart trendlines round-trip (`corpus_charts.rs`); merges, diagonal borders, columns, autofit, vertical text and WordArt warp are in that slice |
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| 2026-10-12 | minor | EMF/WMF text and pattern brushes drawn; OLE (VML) and ActiveX previews read |
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| 2026-10-12 | minor | Text warps rendered; their adjust values read and written |
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@@ -13,6 +13,7 @@
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> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** minor (Insert › Icons places a Lucide stroke set; 3-D models and stock content remain; previous: minor, 3-D bevel, camera and face lighting rendered) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** minor (Size and Position dialog; previous: minor, 3-D bevel, camera and face lighting) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-14 · **Change:** minor (six original starter decks on File › New; previous: minor, 3-D bevel, camera and face lighting rendered; previous: minor, IME composition and CJK interface text landed, #101) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** minor (chart trendlines are drawn; previous: minor, chart trendlines round-trip; 3-D bevel, camera and face lighting rendered; IME composition and CJK interface text landed, #101; core-workflow alpha gate added; stage stays alpha; full re-measure against PowerPoint for Mac 16.113.4 and the open GitHub issues) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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Every known shortfall, one entry each, ranked by how much it stops someone who presents with
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PowerPoint from switching. This is the work list: pick from the top. Numbers are summarized in
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@@ -219,6 +220,11 @@ Detail in [file-format-parity.md](file-format-parity.md).
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or lines), stock charts as high-low lines with close dashes or up/down bars and saved as
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`c:stockChart`, and combo charts start as columns with a line. Secondary-axis writing and
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trendlines are tracked separately.
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whisker) aren't read. Trendlines round-trip (`corpus_charts.rs`) and are drawn: linear,
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exponential, logarithmic, polynomial, power and moving average, with forecast and the equation
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and R² label. A moving average is drawn with neither label. A combo chart's secondary value axis
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is read (`y2_*`, `Series.secondary_axis`) and
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is not written back when the chart is rebuilt.
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- **Impact:** most business decks have charts; editing their data is routine.
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- **Estimate:** 12–20 h. Data and elements are **beta blockers** (6–10 h).
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@@ -373,6 +379,8 @@ Detail in [localization-parity.md](localization-parity.md).
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| 2026-10-13 | minor | Benchmark suite (`cargo xtask bench`, `deckcraft-cli bench`): the performance gap is now frame rate and a PowerPoint comparison |
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| 2026-10-14 | minor | Owned corpus `corpus_media.rs`: 3-D model parts and animation bounce end now round-trip. The real-deck corpus and #70/#74/#77 stay open |
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| 2026-10-14 | trivial | Corpus slice: themes, masters, effects and links; text Mouse Over actions round-trip |
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| 2026-10-14 | trivial | A moving average trendline is drawn without an equation or an R² label |
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| 2026-10-14 | minor | Chart trendlines are drawn (six types, forecast, equation and R²). The charts gap stays open for the data grid, chartex and secondary-axis export; the real-deck corpus gap stays open |
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| 2026-10-14 | minor | Chart trendlines round-trip. The real-deck corpus gap stays open; secondary-axis export and drawing trendlines stay in the charts gap |
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| 2026-10-14 | trivial | 3-D contours |
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| 2026-10-14 | trivial | 3-D light rigs and materials; extrusion sides lit per side |
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@@ -9,6 +9,7 @@
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> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** trivial (chart trendlines round-trip; the real-deck corpus stays open; previous: minor, core-workflow alpha gate added; stage stays alpha) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** trivial (Review previous/next comment; previous: minor, core-workflow alpha gate) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-14 · **Change:** minor (six original starter decks; the large template gallery stays after beta; previous: minor, core-workflow alpha gate added; stage stays alpha) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-14 · **Change:** trivial (chart trendlines are drawn; the charts gap stays open for the data grid, chartex and secondary-axis export; previous: trivial, chart trendlines round-trip; the real-deck corpus stays open; core-workflow alpha gate added; stage stays alpha) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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Forward-looking: where DeckCraft is going and in what order. The one-page summary is
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[ROADMAP.md](../ROADMAP.md); every shortfall is in [gaps.md](gaps.md); numbers are in
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@@ -143,6 +144,7 @@ plan above.
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| 2026-10-13 | trivial | Owned PPTX corpus covers comments, links and actions, custom shows, rotated groups and inherited placeholders. Beta item 2 stays open for a larger corpus, embedded fonts and #70/#74/#77 |
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| 2026-10-13 | trivial | Owned PPTX corpus covers text effects, body layout, theme effects, fills, bevels and connectors. Beta item 2 stays open for a larger corpus, embedded fonts and #70/#74/#77 |
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| 2026-10-14 | trivial | Current focus: `corpus_media.rs` keeps 3-D models and animation bounce end; the real-deck corpus stays open |
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| 2026-10-14 | trivial | Chart trendlines are drawn. The charts gap stays open for the data grid, chartex and secondary-axis export; the real-deck corpus (item 2) stays open |
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| 2026-10-14 | trivial | Chart trendlines round-trip in an owned corpus slice; the real-deck corpus (item 2) stays open |
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| 2026-10-14 | trivial | Review workflow: previous and next comment across the deck |
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| 2026-10-14 | minor | After beta: six original starter decks exist; a larger template gallery remains |
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