NodeShapePainter class

A custom painter that renders a node shape with background and border.

This painter is used by NodeWidget to draw non-rectangular node shapes. It renders:

  • The shape's outline path
  • Background fill color
  • Border stroke

The painter respects the node's theme settings for colors and styling.

Inheritance

Constructors

NodeShapePainter({required NodeShape shape, required Color backgroundColor, required Color borderColor, required double borderWidth, EdgeInsets inset = EdgeInsets.zero, List<BoxShadow>? shadows, required Size size})
Creates a node shape painter.
const

Properties

backgroundColor → Color
The background fill color.
final
borderColor → Color
The border stroke color.
final
borderWidth → double
The border stroke width.
final
hashCode → int
The hash code for this object.
no setterinherited
inset → EdgeInsets
Inset to shrink the shape, leaving space around edges (e.g., for ports).
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
semanticsBuilder → SemanticsBuilderCallback?
Returns a function that builds semantic information for the picture drawn by this painter.
no setterinherited
shadows → List<BoxShadow>?
Optional shadows to render behind the shape.
final
shape → NodeShape
The shape to render.
final
size → Size
The size of the painter (needed for hit testing).
final

Methods

addListener(VoidCallback listener) → void
Register a closure to be notified when it is time to repaint.
inherited
hitTest(Offset position) → bool
Called whenever a hit test is being performed on an object that is using this custom paint delegate.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
paint(Canvas canvas, Size size) → void
Called whenever the object needs to paint. The given Canvas has its coordinate space configured such that the origin is at the top left of the box. The area of the box is the size of the size argument.
override
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that the object notifies when it is time to repaint.
inherited
shouldRebuildSemantics(covariant CustomPainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
inherited
shouldRepaint(covariant NodeShapePainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
override
toString() → String
A string representation of this object.
inherited

Operators

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