Gap class

A widget that takes a fixed amount of space in the direction of its parent.

It only works in the following cases:

It is a descendant of a Row, Column, or Flex, and the path from the Gap widget to its enclosing Row, Column, or Flex must contain only StatelessWidgets or StatefulWidgets (not other kinds of widgets, like RenderObjectWidgets).
It is a descendant of a Scrollable.

Constructors

Gap(double mainAxisExtent, {Key? key, double? crossAxisExtent, Color? color}): Creates a widget that takes a fixed mainAxisExtent of space in the direction of its parent.
const
Gap.expand(double mainAxisExtent, {Key? key, Color? color}): Creates a widget that takes a fixed mainAxisExtent of space in the direction of its parent and expands in the cross axis direction.
const

Properties

color → Color?: The color used to fill the gap.
final
crossAxisExtent → double?: The amount of space this widget takes in the opposite direction of the parent.
final
hashCode → int: The hash code for this object.
no setterinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
mainAxisExtent → double: The amount of space this widget takes in the direction of its parent.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

alignment(AlignmentGeometry alignment, {Key? key, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
animate(Duration duration, Curve curve, {Key? key}) → Widget: Available on Widget, provided by the StyledWidget extension
animated all properties before this method
aspectRatio({Key? key, required double aspectRatio}) → Widget: Available on Widget, provided by the StyledWidget extension
backgroundBlendMode(BlendMode blendMode, {Key? key, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
backgroundBlur(double sigma, {Key? key, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
backgroundColor(Color color, {Key? key, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
backgroundGradient(Gradient gradient, {Key? key, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
backgroundImage(DecorationImage image, {Key? key, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
backgroundLinearGradient({Key? key, AlignmentGeometry begin = Alignment.centerLeft, AlignmentGeometry end = Alignment.centerRight, List<Color>? colors, List<double>? stops, TileMode tileMode = TileMode.clamp, GradientTransform? transform, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
backgroundRadialGradient({Key? key, AlignmentGeometry center = Alignment.center, double radius = 0.5, List<Color>? colors, List<double>? stops, TileMode tileMode = TileMode.clamp, AlignmentGeometry? focal, double focalRadius = 0.0, GradientTransform? transform, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
backgroundSweepGradient({Key? key, AlignmentGeometry center = Alignment.center, double startAngle = 0.0, double endAngle = pi * 2, List<Color>? colors, List<double>? stops, TileMode tileMode = TileMode.clamp, GradientTransform? transform, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
border({Key? key, double? all, double? left, double? right, double? top, double? bottom, Color color = const Color(0xFF000000), BorderStyle style = BorderStyle.solid, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
borderRadius({Key? key, double? all, double? topLeft, double? topRight, double? bottomLeft, double? bottomRight, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
borderRadiusDirectional({Key? key, double? all, double? topStart, double? topEnd, double? bottomStart, double? bottomEnd, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
boxShadow({Key? key, Color color = const Color(0xFF000000), Offset offset = Offset.zero, double blurRadius = 0.0, double spreadRadius = 0.0, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
build(BuildContext context) → Widget: Describes the part of the user interface represented by this widget.
override
card({Key? key, Color? color, double? elevation, ShapeBorder? shape, bool borderOnForeground = true, EdgeInsetsGeometry? margin, Clip? clipBehavior, bool semanticContainer = true}) → Widget: Available on Widget, provided by the StyledWidget extension
center({Key? key, double? widthFactor, double? heightFactor}) → Widget: Available on Widget, provided by the StyledWidget extension
clipOval({Key? key}) → Widget: Available on Widget, provided by the StyledWidget extension
clipRect({Key? key, CustomClipper<Rect>? clipper, Clip clipBehavior = Clip.hardEdge}) → Widget: Available on Widget, provided by the StyledWidget extension
clipRRect({Key? key, double? all, double? topLeft, double? topRight, double? bottomLeft, double? bottomRight, CustomClipper<RRect>? clipper, Clip clipBehavior = Clip.antiAlias, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
constrained({Key? key, double? width, double? height, double minWidth = 0.0, double maxWidth = double.infinity, double minHeight = 0.0, double maxHeight = double.infinity, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
createElement() → StatelessElement: Creates a StatelessElement to manage this widget's location in the tree.
inherited
debugDescribeChildren() → List<DiagnosticsNode>: Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void: Add additional properties associated with the node.
inherited
decorated({Key? key, Color? color, DecorationImage? image, BoxBorder? border, BorderRadius? borderRadius, List<BoxShadow>? boxShadow, Gradient? gradient, BlendMode? backgroundBlendMode, BoxShape shape = BoxShape.rectangle, DecorationPosition position = DecorationPosition.background, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
elevation(double elevation, {Key? key, BorderRadiusGeometry borderRadius = BorderRadius.zero, Color shadowColor = const Color(0xFF000000)}) → Widget: Available on Widget, provided by the StyledWidget extension
expanded({Key? key, int flex = 1}) → Widget: Available on Widget, provided by the StyledWidget extension
fittedBox({Key? key, BoxFit fit = BoxFit.contain, AlignmentGeometry alignment = Alignment.center}) → Widget: Available on Widget, provided by the StyledWidget extension
flexible({Key? key, int flex = 1, FlexFit fit = FlexFit.loose}) → Widget: Available on Widget, provided by the StyledWidget extension
fractionallySizedBox({Key? key, AlignmentGeometry alignment = Alignment.center, double? widthFactor, double? heightFactor}) → Widget: Available on Widget, provided by the StyledWidget extension
gestures({Key? key, GestureOnTapChangeCallback? onTapChange, GestureTapDownCallback? onTapDown, GestureTapUpCallback? onTapUp, GestureTapCallback? onTap, GestureTapCancelCallback? onTapCancel, GestureTapDownCallback? onSecondaryTapDown, GestureTapUpCallback? onSecondaryTapUp, GestureTapCancelCallback? onSecondaryTapCancel, GestureTapCallback? onDoubleTap, GestureLongPressCallback? onLongPress, GestureLongPressStartCallback? onLongPressStart, GestureLongPressMoveUpdateCallback? onLongPressMoveUpdate, GestureLongPressUpCallback? onLongPressUp, GestureLongPressEndCallback? onLongPressEnd, GestureDragDownCallback? onVerticalDragDown, GestureDragStartCallback? onVerticalDragStart, GestureDragUpdateCallback? onVerticalDragUpdate, GestureDragEndCallback? onVerticalDragEnd, GestureDragCancelCallback? onVerticalDragCancel, GestureDragDownCallback? onHorizontalDragDown, GestureDragStartCallback? onHorizontalDragStart, GestureDragUpdateCallback? onHorizontalDragUpdate, GestureDragEndCallback? onHorizontalDragEnd, GestureDragCancelCallback? onHorizontalDragCancel, GestureDragDownCallback? onPanDown, GestureDragStartCallback? onPanStart, GestureDragUpdateCallback? onPanUpdate, GestureDragEndCallback? onPanEnd, GestureDragCancelCallback? onPanCancel, GestureScaleStartCallback? onScaleStart, GestureScaleUpdateCallback? onScaleUpdate, GestureScaleEndCallback? onScaleEnd, GestureForcePressStartCallback? onForcePressStart, GestureForcePressPeakCallback? onForcePressPeak, GestureForcePressUpdateCallback? onForcePressUpdate, GestureForcePressEndCallback? onForcePressEnd, HitTestBehavior? behavior, bool excludeFromSemantics = false, DragStartBehavior dragStartBehavior = DragStartBehavior.start}) → Widget: Available on Widget, provided by the StyledWidget extension
height(double height, {Key? key, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
limitedBox({Key? key, double maxWidth = double.infinity, double maxHeight = double.infinity}) → Widget: Available on Widget, provided by the StyledWidget extension
neumorphism({Key? key, required double elevation, BorderRadius borderRadius = BorderRadius.zero, Color backgroundColor = const Color(0xffEDF1F5), double curve = 0.0, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
offstage({Key? key, bool offstage = true}) → Widget: Available on Widget, provided by the StyledWidget extension
opacity(double opacity, {Key? key, bool animate = false, bool alwaysIncludeSemantics = false}) → Widget: Available on Widget, provided by the StyledWidget extension
overflow({Key? key, AlignmentGeometry alignment = Alignment.center, double? minWidth, double? maxWidth, double? minHeight, double? maxHeight, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
padding({Key? key, double? all, double? horizontal, double? vertical, double? top, double? bottom, double? left, double? right, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
paddingDirectional({Key? key, double? all, double? horizontal, double? vertical, double? top, double? bottom, double? start, double? end, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
parent(Widget parent({required Widget child})) → Widget: Available on Widget, provided by the StyledWidget extension
Applies a parent to a child
positioned({Key? key, double? left, double? top, double? right, double? bottom, double? width, double? height, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
positionedDirectional({Key? key, double? start, double? end, double? top, double? bottom, double? width, double? height, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
ripple({Key? key, Color? focusColor, Color? hoverColor, Color? highlightColor, Color? splashColor, InteractiveInkFeatureFactory? splashFactory, double? radius, ShapeBorder? customBorder, bool enableFeedback = true, bool excludeFromSemantics = false, FocusNode? focusNode, bool canRequestFocus = true, bool autoFocus = false, bool enable = true}) → Widget: Available on Widget, provided by the StyledWidget extension
rotate({Key? key, required double angle, Offset? origin, AlignmentGeometry alignment = Alignment.center, bool transformHitTests = true, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
safeArea({Key? key, bool top = true, bool bottom = true, bool left = true, bool right = true}) → Widget: Available on Widget, provided by the StyledWidget extension
scale({Key? key, double? all, double? x, double? y, Offset? origin, AlignmentGeometry alignment = Alignment.center, bool transformHitTests = true, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
scrollable({Key? key, Axis scrollDirection = Axis.vertical, bool reverse = false, bool? primary, ScrollPhysics? physics, ScrollController? controller, DragStartBehavior dragStartBehavior = DragStartBehavior.start, EdgeInsetsGeometry? padding}) → Widget: Available on Widget, provided by the StyledWidget extension
semanticsLabel(String label, {Key? key}) → Widget: Available on Widget, provided by the StyledWidget extension
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, int wrapWidth = 65}) → 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
transform({Key? key, required Matrix4 transform, Offset? origin, AlignmentGeometry? alignment, bool transformHitTests = true, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
translate({Key? key, required Offset offset, bool transformHitTests = true, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension
width(double width, {Key? key, bool animate = false}) → Widget: Available on Widget, provided by the StyledWidget extension

Operators

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

Gap class

Constructors

Properties

Methods

Operators

main library