ChartItemLayoutState class

每x坐标对应的布局信息

Inheritance

• Object
• ChartLayoutState
• ChartItemLayoutState

Implementers

• ChartLineLayoutState

Constructors

ChartItemLayoutState()

ChartItemLayoutState.arc({required Offset center, required double innerRadius, required double outRadius, required double startAngle, required double sweepAngle})

弧 用path保存 path不便于计算

ChartItemLayoutState.path({required Path? path})

路径

ChartItemLayoutState.rect({required Rect? originRect})

矩形

Properties

children ↔ List<ChartItemLayoutState>

某条数据下 可能会有多条数据

getter/setter pair, inherited

hashCode → int

The hash code for this object.

no setter, inherited

index ↔ int?

数据所在数组的位置

getter/setter pair, inherited

layout ↔ ChartCoordinateState?

布局信息 方便热区计算

getter/setter pair

left ↔ double?

坐标系最左边

getter/setter pair, inherited

nextShapeState ↔ ChartItemLayoutState?

下一个图形的信息

getter/setter pair

originRect ↔ Rect?

图形的区域 和 path 代表同一个图形，只不过用Rect方便计算。

getter/setter pair

path ↔ Path?

形成图形的path 比如单个柱状图 单个扇形

getter/setter pair

preShapeState ↔ ChartItemLayoutState?

此处用链表来解决查找附近其他图形的逻辑 前面一个图形的信息 目的为了解决图形之间的关联信息

getter/setter pair

right ↔ double?

坐标系最右边

getter/setter pair, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

selectedIndex ↔ int?

getter/setter pair, inherited

xValue ↔ num?

对应数据x轴的原始值

getter/setter pair

yValue ↔ num?

对应数据y轴的原始值 yValues里面的其中一个 ，因是树结构，所以位于含有yValues节点的下面

getter/setter pair

yValues ↔ List<num>?

对应数据y轴的原始值 可能对应多个

getter/setter pair

Methods

getHotRect() → Rect?

获取热区

getRealRect() → Rect?

偏移/放大操作后，计算其真实位置

hitTest(Offset? anchor) → bool

判断热区是否命中

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

setOriginRect(Rect rect) → void

修改区域信息

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited