get
  Gets last configured annotation alpha from preferences.
Return
Last configured annotation alpha or default alpha if not available.
Parameters
annotation
Annotation tool for which we need the preferences.
abstract fun getAlpha(@NonNull annotationTool: AnnotationTool, @NonNull toolVariant: AnnotationToolVariant): Float
Gets last configured annotation alpha from preferences.
Return
Last configured annotation alpha or default alpha if not available.
Parameters
annotation
Annotation tool for which we need the preferences.
tool
Variant of the annotation tool.