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状态图

 

 

简单状态

使用([*])开始和结束状态图。

使用-->添加箭头。

@startuml

[*] --> State1
State1 --> [*]
State1 : this is a string
State1 : this is another string

State1 -> State2
State2 --> [*]

@enduml

 

 

Change state rendering

You can use hide empty description to render state as simple box.

@startuml
hide empty description
[*] --> State1
State1 --> [*]
State1 : this is a string
State1 : this is another string

State1 -> State2
State2 --> [*]
@enduml

 

 

合成状态

一个状态也可能是合成的,必须使用关键字state和花括号来定义合成状态。

@startuml
scale 350 width
[*] --> NotShooting

state NotShooting {
  [*] --> Idle
  Idle --> Configuring : EvConfig
  Configuring --> Idle : EvConfig
}

state Configuring {
  [*] --> NewValueSelection
  NewValueSelection --> NewValuePreview : EvNewValue
  NewValuePreview --> NewValueSelection : EvNewValueRejected
  NewValuePreview --> NewValueSelection : EvNewValueSaved
  
  state NewValuePreview {
	 State1 -> State2
  }
  
}
@enduml

 

 

长名字

也可以使用关键字state定义长名字状态。

@startuml
scale 600 width

[*] -> State1
State1 --> State2 : Succeeded
State1 --> [*] : Aborted
State2 --> State3 : Succeeded
State2 --> [*] : Aborted
state State3 {
  state "Accumulate Enough Data\nLong State Name" as long1
  long1 : Just a test
  [*] --> long1
  long1 --> long1 : New Data
  long1 --> ProcessData : Enough Data
}
State3 --> State3 : Failed
State3 --> [*] : Succeeded / Save Result
State3 --> [*] : Aborted
 
@enduml

 

 

并发状态

-- or ||作为分隔符来合成并发状态。

@startuml
[*] --> Active

state Active {
  [*] -> NumLockOff
  NumLockOff --> NumLockOn : EvNumLockPressed
  NumLockOn --> NumLockOff : EvNumLockPressed
  --
  [*] -> CapsLockOff
  CapsLockOff --> CapsLockOn : EvCapsLockPressed
  CapsLockOn --> CapsLockOff : EvCapsLockPressed
  --
  [*] -> ScrollLockOff
  ScrollLockOff --> ScrollLockOn : EvCapsLockPressed
  ScrollLockOn --> ScrollLockOff : EvCapsLockPressed
}

@enduml

 

 

箭头方向

使用->定义水平箭头,也可以使用下列格式强制设置箭头方向:

@startuml

[*] -up-> First
First -right-> Second
Second --> Third
Third -left-> Last

@enduml
可以用首字母缩写或者开始的两个字母定义方向(如, -d--down--do-是完全等价的)。

请不要滥用这些功能,Graphviz不喜欢这样。

 

 

= 注释 =

可以用 note left of, note right of, note top of, note bottom of 关键字来定义注释。

还可以定义多行注释。

@startuml

[*] --> Active
Active --> Inactive

note left of Active : this is a short\nnote

note right of Inactive
  A note can also
  be defined on
  several lines
end note

@enduml

以及浮动注释。

@startuml

state foo
note "This is a floating note" as N1

@enduml

 

 

更多注释

可以在合成状态中放置注释。

@startuml

[*] --> NotShooting

state "Not Shooting State" as NotShooting {
  state "Idle mode" as Idle
  state "Configuring mode" as Configuring
  [*] --> Idle
  Idle --> Configuring : EvConfig
  Configuring --> Idle : EvConfig
}

note right of NotShooting : This is a note on a composite state

@enduml

 

 

显示参数

skinparam改变字体和颜色。

可以在如下场景中使用:

还可以为状态的构造类型指定特殊的字体和颜色。

@startuml
skinparam backgroundColor LightYellow
skinparam state {
  StartColor MediumBlue
  EndColor Red
  BackgroundColor Peru
  BackgroundColor<<Warning>> Olive
  BorderColor Gray
  FontName Impact
}

[*] --> NotShooting

state "Not Shooting State" as NotShooting {
  state "Idle mode" as Idle <<Warning>>
  state "Configuring mode" as Configuring
  [*] --> Idle
  Idle --> Configuring : EvConfig
  Configuring --> Idle : EvConfig
}

NotShooting --> [*]
@enduml