Michael Panchenko 7fb19fc1a2
🐛 Fix float comparison #14070 (#9434)
* 📎 Add test that surfaces the bug described in #14070

The bug: alt-drag-duplicating a variant master into the variant container
auto-creates a new variant component cloned from the source
via duplicate-component, which preserves :touched on every cloned shape.
The resulting copy's children inherit those :geometry-group touched flags
through add-touched-from-ref-chain on switch.

variants-switch -> component-swap (keep-touched? true) -> generate-keep-touched
then runs update-attrs-on-switch for each touched child. The new shape's
:y is correctly skipped by the per-attr "different masters" guard, but
:selrect/:points fall through to a width/height-based safety check that
uses exact equality. In practice, the alt-drag modifier path leaves a
sub-pixel drift in :width on the copy, so equal-geometry? returns false,
the safety check is bypassed, and the :else branch copies the source
variant's :selrect verbatim onto the freshly instantiated target shape.
The shape ends up with :y from the target master but :selrect.y from the
source — the renderer reads :selrect, so the child appears at the source
position inside a parent that has resized to the target's dimensions:
the visible "button cut off" symptom.

The new test sets up a variant container whose children are themselves
component copies (matching production: variant masters' children carry
:touched), introduces the same kind of width drift on the copy that the
alt-drag path produces, and runs the swap directly via the existing
test harness. It asserts (a) :y matches the target, (b) :selrect.y
matches the target, and (c) :y and :selrect.y agree. With the current
code (a) passes and (b)/(c) fail — capturing both the wrong value and
the internal inconsistency that causes the visible regression.

* 🐛 Fix #14070 by no longer comparing floats for exact equality in equal-geometry?
2026-05-11 15:17:48 +02:00
..
2024-09-03 23:35:53 +02:00
2026-05-11 15:17:48 +02:00
2026-01-22 13:55:41 +01:00
2026-03-11 15:24:40 +01:00