ConnectionStyle class abstract

Abstract base class for connection styles

Each connection style encapsulates its own:

  • Path creation logic
  • Hit testing capabilities
  • Bend detection parameters
  • Optimization strategies
Implementers
Available extensions

Constructors

ConnectionStyle()
const

Properties

bendThreshold → double
Get bend detection threshold angle in radians Used for detecting significant direction changes in the path
no setter
defaultHitTolerance → double
Default hit tolerance for this connection style Some styles may need different tolerances based on their geometry
no setter
displayName → String
Human-readable display name
no setter
hasExactBendPoints → bool
Whether this connection style has predictable bend points that can be calculated exactly
no setter
hashCode → int
The hash code for this object.
no setteroverride
id → String
Unique identifier for this connection style
no setter
isBuiltIn → bool

Available on ConnectionStyle, provided by the ConnectionStyleExtension extension

Check if this is a built-in connection style
no setter
minBendDistance → double
Get minimum distance between bend points as multiplier of tolerance
no setter
needsBendDetection → bool
Whether this connection style needs bend detection for hit testing optimization
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createHitTestPath(Path originalPath, double tolerance) → Path
Creates an expanded path for hit testing The base implementation provides a simple stroke-based expansion
createPath(PathParameters params) → Path
Creates the geometric path for drawing this connection This is the main responsibility of each connection style
getExactBendPoints(PathParameters params) → List<Offset>?
Get exact bend points for styles that support it (e.g., step connections) Returns null if the style doesn't support exact bend point calculation
getSampleCount(double pathLength) → int
Get number of samples to use for bend detection based on path length
isEquivalentTo(ConnectionStyle other) → bool
Check if two connection styles are equivalent This is used for caching decisions and theme comparisons
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
override

Operators

operator ==(Object other) → bool
The equality operator.
override

Static Methods

fromEnum(dynamic enumValue) → ConnectionStyle
Convert from legacy enum values to connection style instances