DrawingBoard class

画板

Inheritance

Constructors

DrawingBoard({Key? key, required Widget background, DrawingController? controller, bool showDefaultActions = false, bool showDefaultTools = false, dynamic onPointerDown(PointerDownEvent pde)?, dynamic onPointerMove(PointerMoveEvent pme)?, dynamic onPointerUp(PointerUpEvent pue)?, Clip clipBehavior = Clip.antiAlias, DefaultToolsBuilder? defaultToolsBuilder, Clip boardClipBehavior = Clip.hardEdge, PanAxis panAxis = PanAxis.free, EdgeInsets? boardBoundaryMargin, bool boardConstrained = false, double maxScale = 20, double minScale = 0.2, bool boardPanEnabled = true, bool boardScaleEnabled = true, double boardScaleFactor = 200.0, void onInteractionEnd(ScaleEndDetails)?, void onInteractionStart(ScaleStartDetails)?, void onInteractionUpdate(ScaleUpdateDetails)?, TransformationController? transformationController, AlignmentGeometry alignment = Alignment.topCenter})
const

Properties

alignment → AlignmentGeometry
final
background → Widget
画板背景控件
final
boardBoundaryMargin → EdgeInsets?
final
boardClipBehavior → Clip
缩放板属性
final
boardConstrained → bool
final
boardPanEnabled → bool
final
boardScaleEnabled → bool
final
boardScaleFactor → double
final
clipBehavior → Clip
边缘裁剪方式
final
controller → DrawingController?
画板控制器
final
defaultToolsBuilder → DefaultToolsBuilder?
默认工具栏构建器
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
maxScale → double
final
minScale → double
final
onInteractionEnd → (void Function(ScaleEndDetails)?)
final
onInteractionStart → (void Function(ScaleStartDetails)?)
final
onInteractionUpdate → (void Function(ScaleUpdateDetails)?)
final
onPointerDown → (dynamic Function(PointerDownEvent pde)?)
开始拖动
final
onPointerMove → (dynamic Function(PointerMoveEvent pme)?)
正在拖动
final
onPointerUp → (dynamic Function(PointerUpEvent pue)?)
结束拖动
final
panAxis → PanAxis
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
showDefaultActions → bool
显示默认样式的操作栏
final
showDefaultTools → bool
显示默认样式的工具栏
final
transformationController → TransformationController?
final

Methods

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

Static Methods

defaultTools(Type currType, DrawingController controller) → List<DefToolItem>
默认工具项列表