StreamAppBarStyle class

Visual styling properties for a StreamAppBar.

Defines the appearance of the app bar — background color, padding, inter-slot spacing, title and subtitle text styles, and per-slot button style propagation.

Exposed separately from StreamAppBarThemeData so other theme data classes can embed an app-bar style via a typed field.

{@tool snippet}

Compose a style and hand it to an app bar theme:

StreamAppBarStyle(
  backgroundColor: Color(0xFFFFFFFF),
  padding: EdgeInsets.symmetric(horizontal: 16, vertical: 12),
  spacing: 8,
)

{@end-tool}

See also:

• StreamAppBarThemeData, which wraps this style for theming.
• StreamAppBar, which uses this styling.

Annotations

• @themeGen
• @immutable

Constructors

StreamAppBarStyle({StreamSurfaceStyle? surfaceStyle, Color? backgroundColor, Color? floatingBackgroundColor, EdgeInsetsGeometry? padding, double? spacing, TextStyle? titleTextStyle, TextStyle? subtitleTextStyle, StreamButtonThemeStyle? leadingStyle, StreamButtonThemeStyle? trailingStyle})

Creates an app bar style with optional property overrides.

const

Properties

backgroundColor → Color?

The background color of the app bar when docked.

final

canMerge → bool

no setter, inherited

floatingBackgroundColor → Color?

The background color of the app bar when floating.

final

hashCode → int

The hash code for this object.

no setter, inherited

leadingStyle → StreamButtonThemeStyle?

The button style for any StreamButton rendered in StreamAppBar.leading.

final

padding → EdgeInsetsGeometry?

The padding around the bar's content row.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

spacing → double?

The horizontal space between the leading, heading, and trailing slots.

final

subtitleTextStyle → TextStyle?

The text style for StreamAppBar.subtitle.

final

surfaceStyle → StreamSurfaceStyle?

The floating or regular surface style for this app bar.

final

titleTextStyle → TextStyle?

The text style for StreamAppBar.title.

final

trailingStyle → StreamButtonThemeStyle?

The button style for any StreamButton rendered in StreamAppBar.trailing.

final

Methods

copyWith({StreamSurfaceStyle? surfaceStyle, Color? backgroundColor, Color? floatingBackgroundColor, EdgeInsetsGeometry? padding, double? spacing, TextStyle? titleTextStyle, TextStyle? subtitleTextStyle, StreamButtonThemeStyle? leadingStyle, StreamButtonThemeStyle? trailingStyle}) → StreamAppBarStyle

inherited

merge(StreamAppBarStyle? other) → StreamAppBarStyle

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

lerp(StreamAppBarStyle? a, StreamAppBarStyle? b, double t) → StreamAppBarStyle?

Linearly interpolate between two StreamAppBarStyle objects.