VProgress class
A progress indicator that supports determinate and indeterminate display modes.
The mode controls which variant is rendered:
- VProgressMode.determinate — a linear bar filled to value (must be
0.0–1.0). - VProgressMode.linearIndeterminate — an animated linear bar for unknown progress; value is ignored.
- VProgressMode.circularIndeterminate — an animated circular spinner for unknown progress; value is ignored.
The size parameter applies only to the circular indeterminate mode, allowing selection of small, medium, or large spinner sizes.
Example
// Determinate — 65% complete
VProgress(value: 0.65)
// Linear indeterminate — unknown progress
VProgress(mode: VProgressMode.linearIndeterminate)
// Circular indeterminate
VProgress(mode: VProgressMode.circularIndeterminate, size: VProgressSize.large)
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- VProgress
Constructors
- VProgress({Key? key, double? value, VProgressMode mode = VProgressMode.determinate, VProgressSize size = VProgressSize.small})
-
const
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- mode → VProgressMode
-
The display mode. Defaults to VProgressMode.determinate.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- size → VProgressSize
-
The size of the circular progress indicator when mode is VProgressMode.circularIndeterminate.
Ignored for other modes. Defaults to VProgressSize.medium.
final
- value → double?
-
The progress value, between
0.0and1.0inclusive. Only used when mode is VProgressMode.determinate.final
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