A drawn Fill & Sign signature is an Ink annotation, and Ink couldn't be
resized: the Select tool showed no handles and the engine refused
ResizeAnnotation ("Ink comments can't be resized"). Typed and image
signatures (stamps) already resize (#335, #355), so drawn ones were the
gap left in #331.
- annot: set_rect scales an Ink annotation's strokes into the new
rectangle, keeping each side's margin between the strokes and /Rect
so the line isn't clipped, and regenerates the appearance. A straight
stroke with no extent on one axis is centred on it.
- ui-egui: Ink is resizable with the 8 handles. A drawn signature's
corners keep its shape, as image signatures' do; other drawings resize
freely like shapes.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
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