TBarcodeScanner class

A widget that provides barcode scanning functionality within a popup.

This widget uses TPopupMixin to display the camera stream in a floating popup instead of a full-screen view.

Inheritance
Mixed-in types
Available extensions

Constructors

TBarcodeScanner({Key? key, required Widget child, void onScanned(BarcodeCapture capture)?, TBarcodeScannerMode mode = TBarcodeScannerMode.autoClose, String? title, bool disabled = false, TPopupAlignment alignment = TPopupAlignment.bottomLeft, double offset = 8, VoidCallback? onShow, VoidCallback? onHide, double width = 350, double height = 350, EdgeInsets padding = const EdgeInsets.all(12)})
const

Properties

alignment → TPopupAlignment
Preferred alignment of the popup.
final
child → Widget
The widget that triggers the scanner popup when tapped.
final
disabled → bool
Whether the popup is disabled.
final
hashCode → int
The hash code for this object.
no setterinherited
height → double
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
mode → TBarcodeScannerMode
The scanning mode.
final
offset → double
Offset from the target widget.
final
onHide → VoidCallback?
Callback when popup hides.
final
onScanned → void Function(BarcodeCapture capture)?
Callback fired when a barcode is successfully scanned.
final
onShow → VoidCallback?
Callback when popup shows.
final
padding → EdgeInsets
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
showCloseButton → bool
Whether to show a close button in the popup.
no setterinherited
title → String?
The title displayed at the top of the scanner popup.
final
width → double
final

Methods

box({double minW = 0.0, double minH = 0.0, double maxW = double.infinity, double maxH = double.infinity}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a ConstrainedBox to apply layout constraints.
center({bool when = true}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Center widget.
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<TBarcodeScanner>
Creates the mutable state for this widget at a given location in the tree.
override
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
expanded({int flex = 1}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in an Expanded widget.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
padding([double left = 0.0, double top = 0.0, double right = 0.0, double bottom = 0.0]) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Padding with flexible edge control.
paddingSymmetric({double h = 0.0, double v = 0.0}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Padding with symmetric horizontal and vertical spacing.
size({double? w, double? h}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a SizedBox to apply fixed width and/or height.
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
visible(bool visible, {bool maintainState = false}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Visibility widget.
when(bool condition) → Widget

Available on Widget, provided by the WidgetX extension

Returns this widget if condition is true, otherwise returns SizedBox.shrink(). Usage: Text('Hello').when(isVisible)

Operators

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