Add sdata.pl.annotate() — interactive region selection via anywidget#684
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timtreis wants to merge 6 commits into
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Add sdata.pl.annotate() — interactive region selection via anywidget#684timtreis wants to merge 6 commits into
timtreis wants to merge 6 commits into
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Add plans/interactive-selection.md documenting the v0 design for sdata.pl.interactive(...): in-notebook selector widget that draws a region on a spatialdata-plot canvas and persists it back into the SpatialData object as a ShapesModel. Includes resolved Q1-Q4, coordinate- system rules, downsampling strategy, persistence policy, and a 12-task implementation queue. Add a pixi `interactive` dep-group (ipympl, ipywidgets, squidpy) and a new `dev-interactive-py313` environment for prototyping. Register a dedicated `sdata-plot-interactive` kernel-install task to avoid the existing `pixi-dev` kernel name collision. Rewrite the broken [tool.pixi] inline-dotted block to explicit table headers ([tool.pixi.workspace], etc.) so pixi 0.54.2 actually loads the manifest. This commit records the ipympl-based prototype iteration. The notebook prototype (Sandbox.ipynb in lustre, not tracked here) revealed that websocket-streamed PNG frames are too laggy over SSH for full-slide interactive drawing; the next iteration switches to Plotly's client-side draw tools while keeping the same spec and task queue. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Add anywidget and plotly>=5.20,<6 to the pixi interactive dep-group so the prototype notebook can render a custom HTML5/SVG drawing widget. anywidget is the canonical path for traitlet-based widget sync in VSCode-Remote; plotly is pinned to 5.x because its 6.0 anywidget-backed FigureWidget does not relay client-side relayout events back to Python (so layout.shapes never syncs there). The Sandbox.ipynb prototype itself lives outside this repo (/home/.../lustre/projects/spatialdata-plot/), but its current state implements a working anywidget-based draw canvas: pure client-side SVG drawing (rectangle drag, polygon click-then-Close-polygon, lasso freehand drag), shapes pushed back via the `shapes` traitlet, pixel→CS coordinate mapping that respects matplotlib's origin='upper' image axis, multi-shape commit per Save, and an explicit "Write last to disk" button for persistence. Sandbox.anywidget-v0.ipynb is preserved alongside as a reference snapshot before optimization. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Productionises the Sandbox.ipynb prototype as a user-facing method on
PlotAccessor. Public surface is a single function:
sdata.pl.annotate(coordinate_system, element, *, persist=True) -> None
Both args are required positional. The function validates that the image
element is registered in the given coordinate system, renders it to a PNG,
constructs an internal _InteractiveSession with anywidget-driven drawing
tools (rectangle / polygon / lasso), and displays the widget. Drawn shapes
are written into sdata.shapes[name] on click of the Save button; the
optional "Write to disk" button persists via sdata.write_element.
Module layout (src/spatialdata_plot/pl/interactive/):
- _canvas.py DrawCanvas anywidget class
- static/draw_canvas.js ESM module read from disk by anywidget (HMR-friendly)
- _render.py render_to_png: sdata.pl → PNG + ax extent
- _commit.py pixel-coord shape → CS-coord shapely Polygon → ShapesModel
- _persist.py commit_to_memory + persist_to_disk (collision policy)
- _session.py _InteractiveSession orchestrating the widget
The new optional extra `interactive` (anywidget, ipykernel, ipywidgets)
gates this feature behind a clear ImportError when missing:
pip install 'spatialdata-plot[interactive]'
The prototype iteration explored ipympl (rejected: PNG-over-websocket
latency unusable over SSH) and plotly's FigureWidget (rejected: client-
side relayout events don't sync back to Python in VSCode-Remote, plus
plotly 6's anywidget-backed FigureWidget broke the comm path entirely).
The custom anywidget approach was the only architecture that worked
reliably over SSH while staying responsive.
Drawing UX:
- Tools: rect (drag), polygon (click + snap-close), lasso (drag freehand)
- Wheel zoom, shift-drag pan, alt-click shape to delete
- Ctrl+Z undo, R/P/L tool shortcuts, F fit view, Enter close polygon
- Multi-shape bundling: each Save commits all canvas shapes as one
ShapesModel with multiple rows under a single name
Tests cover the unit surface (pixel→CS conversion, ShapesModel transform
registration, render-to-PNG correctness, commit/persist policy, widget
smoke).
Spec at plans/interactive-selection.md updated to document the
architectural pivot from the original ipympl approach.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Tests: import `DrawCanvas` from `._canvas` (internal class is not re-exported), and gate `test_canvas` with `pytest.importorskip` so CI envs without the `interactive` extra skip rather than fail. - `_persist.py`: replace deprecated `datetime.utcnow()` with timezone-aware `datetime.now(timezone.utc)`. Document on-disk overwrite behaviour (asymmetric with in-memory rename-on-collision). - `_render.py`: wrap render in `try/finally` so figures don't leak if `render_images().show()` or `savefig` raises. - `draw_canvas.js`: Delete/Backspace now removes the most recent shape (matches Ctrl+Z) instead of wiping the whole canvas — the toolbar Clear button covers the wipe case. - `basic.py` docstring: note that the canvas clears on every Save and that the Write-to-disk button overwrites same-named on-disk elements. - Add `tests/test_interactive/test_annotate.py` covering the three validation paths (`unknown CS`, `unknown element`, `element not in CS`) by stubbing `_InteractiveSession.show`. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## main #684 +/- ##
==========================================
- Coverage 77.79% 74.79% -3.00%
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Files 11 17 +6
Lines 3693 3944 +251
Branches 877 901 +24
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+ Hits 2873 2950 +77
- Misses 490 662 +172
- Partials 330 332 +2
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Reuse / convention fixes: - Delete `_persist.persist_to_disk` — `SpatialData.write_element` already raises `ValueError` when `path is None`. Inline `write_element(name, overwrite=True)` in `_on_persist` and fix the docstring claim about overwrite semantics. - Match project import convention: `from spatialdata.transformations. operations import get_transformation` and `...transformations import Identity`, replacing `sd.transformations.*` references in `_session`, `_commit`, and tests. - `_validate` uses `sdata[element]` indexing + `get_transformation` to match the established pattern in `pl/utils.py` / `pl/render.py`. Quality: - Introduce frozen `RenderExtent` dataclass returned by `render_to_png`; collapses the 5-tuple return + 4 cached attrs on `_InteractiveSession` into one object. `pixel_shape_to_polygon(shape, extent)` drops 4 args. - `traitlets.Enum(TOOLS, ...)` for `DrawCanvas.tool` so a typo raises. - `BannerKind = Literal["info","success","error","hint"]`; drop the silent `.get(..., default)` fallback so a banner-kind typo raises. - Factor `_trigger_btn(description, icon, trait_name, after=...)` — replaces 4 near-identical `_on_close_polygon` / `_on_undo` / `_on_clear` / `_on_fit` methods. - Split `_on_save` into `_collect_polygons` / `_commit_polygons` / `_reset_canvas_state`; orchestrator stays ~10 lines. - Drop redundant `spine.set_visible(False)` loop after `set_axis_off()`. - Guard `persist_btn` construction behind `persist=True`; `_on_persist` early-returns if disabled. - Strip restate-the-code comments (`_canvas` module docstring, `_render` v0/v1 narration, `_commit` lasso-restating comment). - Underscore truly-private attrs (`_sdata`, `_commits`); keep `canvas` un-underscored since `_validate` callers in tests still need a way in. Efficiency (JS): - Incremental in-progress shape update during rect/lasso drag — keep a stable reference to the in-progress SVG node; mutate its attributes in `onMouseMove` instead of full `redraw()` (60 Hz × O(N) DOM ops → O(1)). - Lasso vert-push gated on viewbox-px ≥ 1 from the last vert; cuts vertex count ~5-10× for typical drags and the kernel-side traitlet payload on commit. - `setShapes` early-returns on `next === shapes` or both-empty; the `clear_trigger` handler routes through `setShapes([])` and skips when there is nothing to clear or cancel. - `zoomAt` / `panBy` / `fitView` snapshot the vbox pre-clamp and skip `applyViewbox` + `redraw` if the clamped vbox is unchanged. - `change:tool` only redraws if there was an in-progress shape to clear. - Dedup: `popLastShape` helper used by Ctrl+Z, Delete/Backspace, and `change:undo_trigger`. `shapeNode` extracts the common stroke/fill attrs and uses a single `pointsAttr` formatter for polygon/polyline. Tests: - Pytest `no_display` fixture replaces three duplicate `monkeypatch. setattr(...)` calls in `test_annotate.py`. - `pixel_shape_to_polygon` tests updated to the `RenderExtent` signature via a small `_extent(...)` helper. - `test_render` reads `extent.image_w` / `extent.xlim` from the dataclass instead of unpacking a 5-tuple. - Drop the two `test_persist` tests for the deleted `persist_to_disk` wrapper; `commit_to_memory` policy tests remain. All 18 interactive tests pass in dev-interactive-py313. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
UX: - Responsive canvas via `width: 100%` + `max-width: Npx` + CSS `aspect-ratio` on the wrap/container divs. Removes the fixed `DISP_MAX = 760` pixel box. Below `max_width` the canvas scales with the surrounding column; above it the canvas caps and centers. - New `max_width: int = 880` kwarg on `sdata.pl.annotate(...)` plumbed through `_InteractiveSession.__init__` and a new `max_display_width` `Int` traitlet on `DrawCanvas`. Pure display hint; underlying PNG render is unchanged (840 × 840). - Toolbar reflow: replace `HBox` with `Box(layout=Layout(flex_flow= "row wrap", ...))` so the tool toggle + icon buttons wrap onto a second row under narrow notebook widths instead of overflowing. - Icon-only auxiliary buttons (Close polygon / Undo / Clear / Fit / Write to disk) — `description=""`, 36px square, tooltip carries the affordance. Save button keeps its text label. - Drop the standalone "0 shape(s) on canvas" row and the `description= "Tool:"` / `description="Name:"` widget-side labels — none of them added information, all cost vertical space. Behaviour: - Remove the UTC-timestamp collision rename in `commit_to_memory`. Same name now overwrites in-memory (and on-disk via `write_element`, which we already pass `overwrite=True`). Drops the `datetime` import and the rename-on-collision banner branch. Reviewer flagged the prior rename as off-convention vs upstream spatialdata. - Update `test_commit_to_memory_renames_on_collision` → `test_commit_to_memory_overwrites_on_collision`. Other tests unchanged. Lint: - Pre-commit pass: `_dt.timezone.utc` → `_dt.UTC` (UP017) before the whole datetime block was dropped; ruff PT018 split assertion into two lines in `_collect_polygons`; biome + ruff-format normalised the changed Python and JS. All 18 interactive tests pass in dev-interactive-py313. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Hi, really useful feature! What's the relationship to this scverse/2026_04_hackathon_padua#22? |
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Summary
Adds
sdata.pl.annotate(coordinate_system, element, *, persist=True)— an in-notebook widget for drawing regions on a spatialdata-plot canvas and persisting them back into the SpatialData object as aShapesModel. Works over SSH to a remote/SLURM node.src/spatialdata_plot/pl/interactive/(canvas, render, commit, persist, session) backed by a custom anywidget with HTML5/SVG drawing tools (rectangle, polygon, lasso).pip install 'spatialdata-plot[interactive]'(anywidget, ipywidgets, ipykernel) — feature is gated behind a clearImportErrorwhen missing.plans/interactive-selection.md(v0 scope, Q1–Q4 locked).Why anywidget (and not ipympl / plotly)
Both were prototyped and rejected:
The custom anywidget was the only architecture that worked reliably over SSH while staying responsive — image renders once via the existing
render_images().show()pipeline, then all drawing happens client-side and only the final shape geometry round-trips to Python.Drawing UX
ShapesModel(multiple rows) under a single nameCoordinate-system safety
Session is bound to one CS; render is 1:1 in that CS; committed
ShapesModelregisters with{cs_name: Identity()}to avoid the classic double-applied-transform bug.