filter property

Filter filter

Provided a 🔬 Filter to alter filter appearance at all 📚 SurfaceLayers.

• Set<SurfaceLayer> 👓 Filter.filteredLayers determines which 📚 Layers have filters
• 📊 Filter.radiusMap determines filter strength
  • Or Filter.baseRadius && materialRadius && childRadius
• Use Filter.extendBaseFilter == true to have 📚 SurfaceLayer.BASE's filter extend to cover the Surface.margin insets.

While a new 🌟 Surface employs 🔬 Filter.DEFAULT, where Filter.filteredLayers is Filter.NONE, a new 🔬 Filter defaults 👓 Filter.filteredLayers to BASE.

• Default blur radius/strength is _BLUR == 4.0.
• Minimum accepted radius for an activated 📚 Layer is _BLUR_MINIMUM == 0.0003.

• ❗ See CAUTION in Surface doc.

Implementation

final Filter filter;