SubtitleOverlay class

Wraps child and overlays a subtitle panel driven by controller.

The subtitle appears at the bottom of the stack and animates in/out via AnimatedSwitcher. Only rebuilds when the active cue changes, so frame-rate is unaffected during cue-stable periods.

Inheritance

Constructors

SubtitleOverlay({Key? key, required SubtitleController controller, required Widget child})
child with controller's current subtitle over it: white text in a dark rounded panel 48 px above the bottom edge and 24 px in from the sides, fading from cue to cue over 300 ms.
const

Properties

child → Widget
The content the subtitles are drawn over.
final
controller → SubtitleController
Where the text shown comes from; the panel rebuilds only when its SubtitleController.currentText changes.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
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
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent 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, 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

Operators

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