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Alignment ​

Key Properties ​

flowAlign: IFlowAlign | IFlowAxisAlign ​

Defines how child elements are aligned. Default is top-left.

ts
type IFlowAlign =
  | 'top-left'
  | 'top'
  | 'top-right'
  | 'right'
  | 'bottom-right'
  | 'bottom'
  | 'bottom-left'
  | 'left'
  | 'center'
  | IBaseLineAlign

// baseline support in future
type IBaseLineAlign = 'baseline-left' | 'baseline-center' | 'baseline-right'

You can further configure axis alignment within each line.

ts
interface IFlowAxisAlign {
  content?: IFlowAlign
  x?: IAxisAlign // x-axis alignment within a row, default is from
  y?: IAxisAlign // y-axis alignment within a row, default is from
}

// from means align to the start of the axis, to means align to the end
type IAxisAlign = 'from' | 'center' | 'to'

Row Y-axis alignment

Row X-axis alignment

Belongs To ​

Flow Element ​

Example ​

Top-left alignment ​

ts
// #自动布局 - 对齐内容 [左上角对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: 'top-left', // 左上角对齐
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Top-center alignment ​

ts
// #自动布局 - 对齐内容 [顶部居中对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: 'top', // 顶部居中对齐
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Top-right alignment ​

ts
// #自动布局 - 对齐内容 [右上角对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: 'top-right', // 右上角对齐
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Left alignment ​

ts
// #自动布局 - 对齐内容 [左对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: 'left', // 左对齐
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Center alignment ​

ts
// #自动布局 - 对齐内容 [居中对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: 'center', // 居中对齐
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Right alignment ​

ts
// #自动布局 - 对齐内容 [右对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: 'right', // 右对齐
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Bottom-left alignment ​

ts
// #自动布局 - 对齐内容 [左下角对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: 'bottom-left', // 左下角对齐
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Bottom-center alignment ​

ts
// #自动布局 - 对齐内容 [底部居中对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: 'bottom', // 底部居中对齐
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Bottom-right alignment ​

ts
// #自动布局 - 对齐内容 [右下角对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: 'bottom-right', // 右下角对齐
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Center alignment with row top alignment ​

ts
// #自动布局 - 对齐内容 [居中对齐，且行内顶部对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: {  // 居中对齐，且行内顶部对齐
        content: 'center',
        y: 'from'
    },
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Center alignment with row center alignment ​

ts
// #自动布局 - 对齐内容 [居中对齐，且行内居中对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: {  // 居中对齐，且行内居中对齐
        content: 'center',
        y: 'center'
    },
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Center alignment with row bottom alignment ​

ts
// #自动布局 - 对齐内容 [居中对齐，且行内底部对齐]
import { Leafer, Box } from 'leafer-ui'
import { Flow } from '@leafer-in/flow'  // 导入自动布局插件

const leafer = new Leafer({ view: window })

const flow = new Flow({
    flowAlign: {  // 居中对齐，且行内底部对齐
        content: 'center',
        y: 'to'
    },
    fill: '#676',
    width: 100,
    height: 100,
    children: [
        new Box({ fill: '#FF4B4B', children: [{ tag: 'Text', text: '1', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 20 }] }),
        new Box({ fill: '#FEB027', children: [{ tag: 'Text', text: '2', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 40 }] }),
        new Box({ fill: '#79CB4D', children: [{ tag: 'Text', text: '3', fill: 'white', textAlign: 'center', verticalAlign: 'middle', width: 25, height: 30 }] })
    ],
})

leafer.add(flow)

Released under the MIT License.

Copyright © 2023-2026 Chao (Leafer) Wan