PrettyQrView class
A widget that displays a QR code symbol.
{@tool snippet}
This sample code shows how to use PrettyQrView
to display QR code image.
PrettyQrView.data(
data: '...',
errorCorrectLevel: QrErrorCorrectLevel.H,
decoration: const PrettyQrDecoration(
shape: PrettyQrSmoothSymbol(),
image: PrettyQrDecorationImage(
image: AssetImage('images/flutter.png'),
position: PrettyQrDecorationImagePosition.embedded,
),
),
)
{@end-tool}
- Inheritance
- Annotations
-
- @sealed
Constructors
- PrettyQrView({required QrImage qrImage, Key? key, PrettyQrDecoration? decoration})
-
Creates a widget that displays an QR symbol obtained from a qrImage.
const
Properties
- decoration → PrettyQrDecoration?
-
What decoration to paint.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- qrImage → QrImage
-
The QR to display.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
createElement(
) → LeafRenderObjectElement -
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
-
createRenderObject(
BuildContext context) → PrettyQrRenderView -
Creates an instance of the RenderObject class that this
RenderObjectWidget represents, using the configuration described by this
RenderObjectWidget.
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.
override
-
didUnmountRenderObject(
covariant RenderObject renderObject) → void -
A render object previously associated with this widget has been removed
from the tree. The given RenderObject will be of the same type as
returned by this object's createRenderObject.
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}) → 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
-
updateRenderObject(
BuildContext context, covariant PrettyQrRenderView renderObject) → void -
Copies the configuration described by this RenderObjectWidget to the
given RenderObject, which will be of the same type as returned by this
object's createRenderObject.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
data(
{required String data, Key? key, PrettyQrDecoration? decoration, ImageErrorWidgetBuilder? errorBuilder, int errorCorrectLevel = QrErrorCorrectLevel.L}) → PrettyQrDataView - Creates a widget that displays an QR symbol obtained from a data.