Support NOT OR operation for single-path shapes

[kyamagu]

Summary

Single-path shapes with the NOT OR operation (negated shapes) are not currently handled.

Current Behavior

• Single paths with NOT OR operation are processed as regular shapes
• Code location: shape.py:40

Expected Behavior

Proper handling of negated shapes, likely by creating an inverted mask or using appropriate SVG techniques.

Implementation Notes

The code comment indicates this is a special case: "Handle NOT OR for single path. This is a negated shape."

A negated shape means the shape defines what should be hidden rather than what should be shown. This would require:

1. Detecting the NOT OR operation on single paths
2. Using an inverted mask or fill-rule to achieve the negation effect
3. Ensuring proper composition with other layers

Related Files

• src/psd2svg/core/shape.py