StacAppBar class

A Stac model representing Flutter's AppBar widget.

Displays a Material Design app bar at the top of the app.

{@tool snippet} Dart Example:

StacAppBar(
  title: StacText(data: 'Page Title'),
  actions: [
    StacIconButton(icon: StacIcon(icon: StacIcons.search)),
  ],
)

{@end-tool}

{@tool snippet} JSON Example:

{
  "type": "appBar",
  "title": {"type": "text", "data": "Page Title"},
  "actions": [
    {"type": "iconButton", "icon": {"type": "icon", "icon": "search"}}
  ]
}

{@end-tool}

Inheritance
Annotations
  • @JsonSerializable()

Constructors

StacAppBar.new({StacWidget? leading, bool? automaticallyImplyLeading, StacWidget? title, List<StacWidget>? actions, StacWidget? flexibleSpace, StacWidget? bottom, double? elevation, double? scrolledUnderElevation, StacColor? shadowColor, StacColor? surfaceTintColor, StacColor? backgroundColor, StacColor? foregroundColor, bool? primary, bool? centerTitle, bool? excludeHeaderSemantics, double? titleSpacing, double? toolbarOpacity, double? bottomOpacity, double? toolbarHeight, double? leadingWidth, StacTextStyle? toolbarTextStyle, StacTextStyle? titleTextStyle, StacSystemUIOverlayStyle? systemOverlayStyle, bool? forceMaterialTransparency, bool? useDefaultSemanticsOrder, StacClip? clipBehavior, StacEdgeInsets? actionsPadding})
Creates an app bar with the specified properties.
StacAppBar.fromJson(Map<String, dynamic> json)
Creates a StacAppBar from a JSON map.
factory

Properties

actions → List<StacWidget>?
Widgets to display after the title, typically action buttons.
final
actionsPadding → StacEdgeInsets?
Outer padding applied around the actions row.
final
automaticallyImplyLeading → bool?
Whether to imply a leading widget (e.g., back button) if none is provided.
final
backgroundColor → StacColor?
The background color of the app bar.
final
bottom → StacWidget?
A widget displayed at the bottom of the app bar, typically a tab bar.
final
bottomOpacity → double?
Opacity for the bottom widget of the app bar.
final
centerTitle → bool?
Whether the title should be centered.
final
clipBehavior → StacClip?
How to clip the content of the app bar.
final
elevation → double?
The elevation of the app bar's material.
final
excludeHeaderSemantics → bool?
Whether to exclude the app bar from the semantics tree header.
final
flexibleSpace → StacWidget?
A widget stacked behind the toolbar and tab bar. Extends under the status bar.
final
forceMaterialTransparency → bool?
Whether to remove background and elevation for a transparent Material effect.
final
foregroundColor → StacColor?
The default color for text and icons within the app bar.
final
hashCode → int
The hash code for this object.
no setterinherited
jsonData → Map<String, dynamic>?
Raw JSON data for this widget
finalinherited
leading → StacWidget?
A widget to display before the title, typically a navigation button.
final
leadingWidth → double?
The width allocated for the leading widget.
final
primary → bool?
Whether this app bar is part of the app's primary scaffold.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
scrolledUnderElevation → double?
The elevation to use when content is scrolled under the app bar.
final
shadowColor → StacColor?
The color of the shadow cast by the app bar's elevation.
final
surfaceTintColor → StacColor?
The color used for the app bar's surface tint overlay.
final
systemOverlayStyle → StacSystemUIOverlayStyle?
The style to use for system overlays (status bar icons, etc.).
final
title → StacWidget?
The primary widget displayed in the app bar, usually a StacText.
final
titleSpacing → double?
Spacing around the title. When leading is null, spacing before the title.
final
titleTextStyle → StacTextStyle?
The text style for the title widget.
final
toolbarHeight → double?
The height of the toolbar portion of the app bar.
final
toolbarOpacity → double?
Opacity for the toolbar portion of the app bar.
final
toolbarTextStyle → StacTextStyle?
The text style for the toolbar widgets.
final
type → String
The type of the widget
no setteroverride
useDefaultSemanticsOrder → bool?
Whether to use the default semantics order for toolbar and bottom.
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJson() → Map<String, dynamic>
Converts this widget to a JSON map
override
toString() → String
A string representation of this object.
inherited

Operators

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