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CLAUDE.md: the pointer-capture / dblclick gotcha
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Co-Authored-By: Claude Fable 5 <[email protected]>
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steve
2026-08-23 03:13:35 -04:00
co-authored by Claude Fable 5
parent 916b2989f5
commit a19fc2e7fc
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@@ -104,6 +104,12 @@ Conventions that follow from it:
- **Tap-to-place makes a one-plant plop** (radius = spacing/2, per the handoff); - **Tap-to-place makes a one-plant plop** (radius = spacing/2, per the handoff);
"Fill the bed" (rows / clumps) is the bulk tool. Fill geometry still follows "Fill the bed" (rows / clumps) is the bulk tool. Fill geometry still follows
the clump rules below — different tools, not a conflict. the clump rules below — different tools, not a conflict.
- **The canvas captures the pointer, so `onDoubleClick` on a bed never fires.**
`track()` calls `setPointerCapture` on the SVG root for every press, and
capture retargets the compatibility `click`/`dblclick` to the root. Double
presses are detected in `objDown` (same object, < 400 ms, < 12 px) instead;
a `dblclick` handler on an object is dead code — it was, silently, from the
Organic rebuild until 2026-08-23.
- **Undo in the header re-reads history before reverting.** The cached list - **Undo in the header re-reads history before reverting.** The cached list
trails the canvas right after a placement, and undoing the step *before* the trails the canvas right after a placement, and undoing the step *before* the
one you meant is the worst thing an undo button can do. Keep it that way. one you meant is the worst thing an undo button can do. Keep it that way.