CirclePainter<R extends Object> class

The CustomPainter used to draw CircleMarkers for the CircleLayer.

Inheritance

Constructors

CirclePainter.new({required List<CircleMarker<R>> circles, required MapCamera camera, required LayerHitNotifier<R>? hitNotifier})
Create a CirclePainter instance by providing the required reference objects.

Properties

camera MapCamera
final
circles List<CircleMarker<R>>
Reference to the list of CircleMarkers of the CircleLayer.
final
elements Iterable<CircleMarker<R>>
Elements that should be possibly be hit tested by elementHitTest (hitTest)
no setter
hashCode int
The hash code for this object.
no setterinherited
hitNotifier LayerHitNotifier<R>?
final
origin Offset
Returns the origin of the camera.
no setterinherited
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
viewportRect Rect
The rectangle of the canvas on its last paint
no setterinherited
worldWidth double
Returns the world size in pixels.
no setterinherited

Methods

addListener(VoidCallback listener) → void
Register a closure to be notified when it is time to repaint.
inherited
areOffsetsVisible(Iterable<Offset> offsets) bool
Determine whether the specified offsets are visible within the viewport
inherited
elementHitTest(CircleMarker<R> element, {required Offset point, required LatLng coordinate}) bool
Method invoked by hitTest for every element (each of elements in reverse order) that requires testing
hitTest(Offset position) bool?
Called whenever a hit test is being performed on an object that is using this custom paint delegate.
inherited
metersToScreenPixels(LatLng point, double meters) double
Converts a distance in meters to the equivalent distance in screen pixels, at the geographic coordinates specified.
inherited
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 CirclePainter<Object> 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
workAcrossWorlds(WorldWorkControl work(double shift)) bool
Perform the callback in all world copies (until stopped)
inherited

Operators

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