PatternPainter class abstract

Base class for all pattern painters in the package.

This abstract class provides common functionality and enforces the contract that all pattern painters must implement.

Inheritance

Implementers

Constructors

PatternPainter(): Creates a pattern painter with the given parameters.
const

elementSize → double: The size of individual pattern elements in logical pixels.
no setter
hashCode → int: The hash code for this object.
no setterinherited
patternOffset → Offset: The offset from the top-left corner where the pattern should start. Defaults to Offset.zero.
no setter
repeatPattern → bool: Whether the pattern should be repeated across the entire canvas. Defaults to true.
no setter
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
spacing → double: The spacing between pattern elements in logical pixels.
no setter

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.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
paint(Canvas canvas, Size size) → void: Paints the shape on the given canvas.
inherited
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: Whether the painter should repaint when the painter instance changes.
override
shouldRepaint(covariant CustomPainter oldDelegate) → bool: Whether the painter should repaint when the size changes.
override
toString() → String: A string representation of this object.
inherited