Column Sizing

The ability to resize columns by dragging the column header border.

State

Column sizing state is stored on the table using the following shape:

export type ColumnSizingTableState = {
  columnSizing: ColumnSizing
  columnSizingInfo: ColumnSizingInfoState
}
 
export type ColumnSizing = Record<string, number>
 
export type ColumnSizingInfoState = {
  startOffset: null | number
  startSize: null | number
  deltaOffset: null | number
  deltaPercentage: null | number
  isResizingColumn: false | string
  columnSizingStart: [string, number][]
}

export type ColumnSizingTableState = {
  columnSizing: ColumnSizing
  columnSizingInfo: ColumnSizingInfoState
}
 
export type ColumnSizing = Record<string, number>
 
export type ColumnSizingInfoState = {
  startOffset: null | number
  startSize: null | number
  deltaOffset: null | number
  deltaPercentage: null | number
  isResizingColumn: false | string
  columnSizingStart: [string, number][]
}

Column Def Options

`enableResizing`

enableResizing?: boolean

enableResizing?: boolean

Enables or disables column resizing for the column.

`size`

size?: number

size?: number

The desired size for the column

`minSize`

minSize?: number

minSize?: number

The minimum allowed size for the column

`maxSize`

maxSize?: number

maxSize?: number

The maximum allowed size for the column

Column API

Table Options

`getSize`

getSize: () => number

getSize: () => number

Returns the current size of the column

`getStart`

getStart: (position?: ColumnPinningPosition) => number

getStart: (position?: ColumnPinningPosition) => number

Returns the offset measurement along the row-axis (usually the x-axis for standard tables) for the column.

`getCanResize`

getCanResize: () => boolean

getCanResize: () => boolean

Returns true if the column can be resized.

`getIsResizing`

getIsResizing: () => boolean

getIsResizing: () => boolean

Returns true if the column is currently being resized.

`resetSize`

resetSize: () => void

resetSize: () => void

Resets the column size to its initial size.

Header API

`getSize`

getSize: () => number

getSize: () => number

Returns the size for the header, calculated by summing the size of all leaf-columns that belong to it.

`getStart`

getStart: (position?: ColumnPinningPosition) => number

getStart: (position?: ColumnPinningPosition) => number

Returns the offset measurement along the row-axis (usually the x-axis for standard tables) for the header. This is effectively a sum of the offset measurements of all preceding headers.

`getResizeHandler`

getResizeHandler: () => (event: unknown) => void

getResizeHandler: () => (event: unknown) => void

Returns an event handler function that can be used to resize the header. It can be used as an:

onMouseDown handler
onTouchStart handler

The dragging and release events are automatically handled for you.

Table API Options

`enableColumnResizing`

enableColumnResizing?: boolean

enableColumnResizing?: boolean

Enables/disables column resizing for *all columns**.

`columnResizeMode`

columnResizeMode?: 'onChange' | 'onEnd'

columnResizeMode?: 'onChange' | 'onEnd'

Determines when the columnSizing state is updated. onChange updates the state when the user is dragging the resize handle. onEnd updates the state when the user releases the resize handle.

`onColumnSizingChange`

onColumnSizingChange?: OnChangeFn<ColumnSizingState>

onColumnSizingChange?: OnChangeFn<ColumnSizingState>

This optional function will be called when the columnSizing state changes. If you provide this function, you will be responsible for maintaining its state yourself. You can pass this state back to the table via the state.columnSizing table option.

`onColumnSizingInfoChange`

onColumnSizingInfoChange?: OnChangeFn<ColumnSizingInfoState>

onColumnSizingInfoChange?: OnChangeFn<ColumnSizingInfoState>

This optional function will be called when the columnSizingInfo state changes. If you provide this function, you will be responsible for maintaining its state yourself. You can pass this state back to the table via the state.columnSizingInfo table option.

Table API

`setColumnSizing`

setColumnSizing: (updater: Updater<ColumnSizingState>) => void

setColumnSizing: (updater: Updater<ColumnSizingState>) => void

Sets the column sizing state using an updater function or a value. This will trigger the underlying onColumnSizingChange function if one is passed to the table options, otherwise the state will be managed automatically by the table.

`setColumnSizingInfo`

setColumnSizingInfo: (updater: Updater<ColumnSizingInfoState>) => void

setColumnSizingInfo: (updater: Updater<ColumnSizingInfoState>) => void

Sets the column sizing info state using an updater function or a value. This will trigger the underlying onColumnSizingInfoChange function if one is passed to the table options, otherwise the state will be managed automatically by the table.

`resetColumnSizing`

resetColumnSizing: (defaultState?: boolean) => void

resetColumnSizing: (defaultState?: boolean) => void

Resets column sizing to its initial state. If defaultState is true, the default state for the table will be used instead of the initialValue provided to the table.

`resetHeaderSizeInfo`

resetHeaderSizeInfo: (defaultState?: boolean) => void

resetHeaderSizeInfo: (defaultState?: boolean) => void

Resets column sizing info to its initial state. If defaultState is true, the default state for the table will be used instead of the initialValue provided to the table.

`getTotalSize`

getTotalSize: () => number

getTotalSize: () => number

Returns the total size of the table by calculating the sum of the sizes of all leaf-columns.

`getLeftTotalSize`

getLeftTotalSize: () => number

getLeftTotalSize: () => number

If pinning, returns the total size of the left portion of the table by calculating the sum of the sizes of all left leaf-columns.

`getCenterTotalSize`

getCenterTotalSize: () => number

getCenterTotalSize: () => number

If pinning, returns the total size of the center portion of the table by calculating the sum of the sizes of all unpinned/center leaf-columns.

`getRightTotalSize`

getRightTotalSize: () => number

getRightTotalSize: () => number

If pinning, returns the total size of the right portion of the table by calculating the sum of the sizes of all right leaf-columns.

Credits

Column Sizing - TanStack Table v8 Docs

Column Pinning Column Visibility