Raven 0.11.0

Raven 0.11.0

This release adds a SwiftUI-like preferences system (including anchor preferences) so child views can propagate values and geometry up the tree and ancestors can read/observe them.

Added

• PreferenceKey + PreferenceValues
• Preference modifiers:
  • preference(key:value:)
  • transformPreference(_:_:)
  • onPreferenceChange(_:perform:) (runs post-render)
  • overlayPreferenceValue(_:alignment:_:)
  • backgroundPreferenceValue(_:alignment:_:)
• Anchor preferences (initial support):
  • Anchor<CGRect>
  • anchorPreference(key:value:transform:)
  • GeometryProxy anchor resolution (geo[anchor]) on WASM via DOM measurement

Behavior Notes

• Preference reduction is applied in flattened view-tree order (SwiftUI-like).
• onPreferenceChange is deferred to after the render pass to avoid re-entrant renders.

Demo

The TodoApp example includes a new Prefs tab demonstrating both preference aggregation and Anchor<CGRect> resolution.