FunnelChart class
漏斗图 漏斗图有两种样式
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___________ + ____________
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第一种，是两边都向中间缩短的漏斗FunnelShape.leftAndRight。
第二种，是只有一边向中间缩短的漏斗FunnelShape.leftOrRight。
通过inputTextStyle来控制样式。
在漏斗的两层layer之间或者左右可以插入标签markers，它们可以是一些常见的Widget，如Text，在参数children中提供。
通过alignment可以控制标签的插入位置。
使用layerMargin可以控制两层layer之间的间距。
每层layer支持自定义图案绘制，绘制参考BrnFunnelLayerPainter类定义
- Inheritance
Constructors
- FunnelChart({Key? key, required int layerCount, required int markerCount, required BrnFunnelLayerPainter layerPainter, required MarkerBuilder builder, FunnelShape shape = FunnelShape.leftAndRight, double maxLayerWidth = 200, double minLayerWidth = 0, double layerHeight = 40, double layerMargin = 0, Offset childOffset = Offset.zero, MarkerAlignment alignment = MarkerAlignment.right})
- FunnelChart.defaultStyle({Key? key, required int layerCount, required int markerCount, required MarkerBuilder builder, double maxLayerWidth = 200, double minLayerWidth = 0, double layerHeight = 40, double layerMargin = 0, Offset childOffset = Offset.zero})
-
漏斗图默认Bruno风格的命名构造函数，
layerCount不能大于defaultLayerColors.length。
Properties
- alignment → MarkerAlignment
-
漏斗标签marker的摆放位置
final
- childOffset → Offset
-
漏斗标签marker的偏移量
final
-
children
→ List<
Widget> -
The widgets below this widget in the tree.
finalinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- layerCount → int
-
漏斗的层数
final
- layerHeight → double
-
漏斗每层的高度
final
- layerMargin → double
-
漏斗每层之间的距离
final
- layerPainter → BrnFunnelLayerPainter
-
用于每层layer的绘制，可以继承BrnFunnelLayerPainter对每层的绘制进行定制
final
- markerCount → int
-
漏斗标签的个数，如果和layerCount相等说明是一对一的关系。如果比layerCount少一，说明描述的事layer之间的关系。
除此之外的情形将会被认为是错误参数
final
- maxLayerWidth → double
-
漏斗的最大宽度，一般是漏斗最上层的宽度
final
- minLayerWidth → double
-
漏斗的最小宽度，一般是漏斗最下层的宽度
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- shape → FunnelShape
-
漏斗类型
final
Methods
-
createElement(
) → MultiChildRenderObjectElement -
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
-
createRenderObject(
BuildContext context) → RenderObject -
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.
inherited
-
didUnmountRenderObject(
covariant RenderObject renderObject) → void -
This method is called when a RenderObject that was previously
associated with this widget is removed from the render tree.
The provided RenderObject will be of the same type as the one created by
this widget's createRenderObject method.
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
-
updateRenderObject(
BuildContext context, covariant RenderFunnelChart 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
Constants
-
defaultLayerColors
→ const List<
Color> - Bruno风格的每层layer预设的颜色值，按顺序使用颜色值。实际层数超过该数量需要自行定义。