SegmentDisplay class Null safety

This class represents general segment display.

To create concrete segment display, extend SegmentDisplay class and implement createSingleCharacter method.

Inheritance
Implementers

Constructors

SegmentDisplay({Key? key, required String value, required Map<String, int> characterMap, double? size, SegmentStyle? segmentStyle, int? characterCount, double? characterSpacing, Color? backgroundColor})
const

Properties

backgroundColor Color
Color of display background
final
characterCount int?
Number of characters to display, used when building display.
final
characterMap Map<String, int>
Mappings from character (string) to int (hex) which represents enabled and disabled segments for given character.
final
characterSpacing double
Space between individual characters
final
hashCode int
The hash code for this object.
@nonVirtualread-onlyinherited
key Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType Type
A representation of the runtime type of the object.
read-onlyinherited
segmentSize Size
Size of segments.
read-only
segmentStyle SegmentStyle
Style for segments which defines shape, color or size for segments.
final
size double
Size of characters on display.
final
value String
Characters to be displayed on display.
final

Methods

build(BuildContext context) Widget
Describes the part of the user interface represented by this widget.
override
canDisplay(String character) bool
Returns true when character can be displayed on the display.
computeSize() Size
Returns current Size of whole display.
createDisplaySegments() List<Segment>
Creates whole display - all characters (all segments)
createDividerCharacter(String character, double indent) Segment?
Creates special segment to display dividers like decimal point or colon.
createElement() StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
createSingleCharacter(double indent) List<Segment>
Creates segments to display a (single) character.
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
@protectedinherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a one-line detailed description of the object.
inherited
toStringShort() String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) bool
The equality operator.
@nonVirtualinherited