PaintingCanvas class

A widget for creating a canvas for painting on images.

This widget allows you to create a canvas for painting on images loaded from various sources, including network URLs, asset paths, files, or memory (Uint8List). It provides customization options for appearance and behavior.

Inheritance

Constructors

PaintingCanvas({Key? key, VoidCallback? onStartPainting, VoidCallback? onCreatedPainting, ValueChanged<List<String>>? onRemoveLayer, bool freeStyleHighPerformance = false, required Size drawAreaSize, required PaintingController paintCtrl})
Constructs a PaintingCanvas widget.
const

Properties

drawAreaSize → Size
Size of the image.
final
freeStyleHighPerformance → bool
Controls high-performance for free-style drawing.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onCreatedPainting → VoidCallback?
Callback function when the active painting is done.
final
onRemoveLayer → ValueChanged<List<String>>?
final
onStartPainting → VoidCallback?
final
paintCtrl → PaintingController
The PaintingController class is responsible for managing and controlling the painting state.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → PaintingCanvasState
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
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

Operators

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