Struct SubColumn 

pub struct SubColumn {
    pub name: Option<String>,
    pub width: Width,
    pub align: Align,
    pub overflow: Overflow,
    pub null_repr: String,
    pub style: Option<String>,
}

A sub-column within a parent column for per-row width distribution.

Sub-columns partition a parent column’s resolved width on a per-row basis. Within a set of sub-columns, exactly one must use Width::Fill (the “grower”) which absorbs remaining space after fixed/bounded sub-columns are satisfied.

This enables layouts where a single column contains multiple logical fields that share space dynamically — for example, a title that grows to fill available space alongside an optional tag of variable width:

Gallery Navigation                            [feature]
Bug : Static                                      [bug]
Fixing Layout of Image Nav

Sub-column widths are resolved per-row from actual content, not across all rows. Width::Fraction is not supported for sub-columns.

Fields

name: Option<String>

Optional name/identifier.

width: Width

Width strategy (Fixed, Bounded, or Fill only — no Fraction).

align: Align

Text alignment within this sub-column.

overflow: Overflow

How to handle overflow.

null_repr: String

Representation for null/empty values.

style: Option<String>

Optional style name.

Implementations

impl SubColumn

pub fn new(width: Width) -> Self

Create a sub-column with the specified width.

pub fn named(self, name: impl Into<String>) -> Self

Set the sub-column name/identifier.

pub fn align(self, align: Align) -> Self

Set the text alignment.

pub fn right(self) -> Self

Set alignment to right.

pub fn center(self) -> Self

Set alignment to center.

pub fn overflow(self, overflow: Overflow) -> Self

Set the overflow behavior.

pub fn null_repr(self, null_repr: impl Into<String>) -> Self

Set the null/empty value representation.

pub fn style(self, style: impl Into<String>) -> Self

Set the style name.

Trait Implementations

impl Clone for SubColumn

fn clone(&self) -> SubColumn

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SubColumn

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SubColumn

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SubColumn

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SubColumn

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.