BannerPainter class Null safety

Paints a Banner.

Inheritance

Constructors

BannerPainter({required String message, required TextDirection textDirection, required BannerLocation location, required TextDirection layoutDirection, Color color = _kColor, TextStyle textStyle = _kTextStyle})
Creates a banner painter.

Properties

color → Color
The color to paint behind the message.
final
hashCode → int
The hash code for this object.
read-onlyinherited
layoutDirection → TextDirection
The directionality of the layout.
final
location → BannerLocation
Where to show the banner (e.g., the upper right corner).
final
message → String
The message to show in the banner.
final
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
semanticsBuilder → SemanticsBuilderCallback?
Returns a function that builds semantic information for the picture drawn by this painter.
read-onlyinherited
textDirection → TextDirection
The directionality of the text.
final
textStyle → TextStyle
The text style to use for the message.
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 non-existent 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 BannerPainter 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