Struct FlexParentData 

pub struct FlexParentData {
    pub flex: Option<i32>,
    pub fit: Option<FlexFit>,
    /* private fields */
}

Parent data for use with RenderFlex.

Fields

flex: Option<i32>

The flex factor to use for this child.

If None or zero, the child is inflexible and determines its own size. If non-zero, the amount of space the child’s can occupy in the main axis is determined by dividing the free space (after placing the inflexible children) according to the flex factors of the flexible children.

fit: Option<FlexFit>

How a flexible child is inscribed into the available space.

If flex is non-zero, the fit determines whether the child fills the space the parent makes available during layout. If the fit is FlexFit::Tight, the child is required to fill the available space. If the fit is FlexFit::Loose, the child can be at most as large as the available space (but is allowed to be smaller).

Implementations

impl FlexParentData

pub const fn new() -> FlexParentData

Creates flex parent data with no flex factor and no fit.

Trait Implementations

impl ContainerBoxParentData for FlexParentData

fn box_parent_data(&self) -> &BoxParentData

Mixin field access: the BoxParentData half.

fn box_parent_data_mut(&mut self) -> &mut BoxParentData

See box_parent_data.

fn offset(&self) -> Offset

The offset at which to paint the child in the parent’s coordinate system.

fn set_offset(&mut self, value: Offset)

Sets offset.

impl ContainerParentDataMixin for FlexParentData

type ChildType = AnyRenderBox

The type-erased handle of a child in the list. AnyRenderBox for a box container.

fn container_parent_data(&self) -> &ContainerParentData<AnyRenderBox>

Mixin field access.

fn container_parent_data_mut( &mut self, ) -> &mut ContainerParentData<AnyRenderBox>

See container_parent_data.

fn previous_sibling(&self) -> Option<Self::ChildType>

The previous sibling in the parent’s child list.

fn set_previous_sibling(&mut self, value: Option<Self::ChildType>)

Sets previous_sibling.

fn next_sibling(&self) -> Option<Self::ChildType>

The next sibling in the parent’s child list.

fn set_next_sibling(&mut self, value: Option<Self::ChildType>)

Sets next_sibling.

fn detach(&mut self)

Clear the sibling pointers.

impl Debug for FlexParentData

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

Formats the value using the given formatter.

impl Default for FlexParentData

fn default() -> FlexParentData

Returns the “default value” for a type.

impl Display for FlexParentData

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

Formats the value using the given formatter.

impl ParentData for FlexParentData

fn detach(&mut self)

Called when the render object is removed from the tree.

fn provide(&self, id: TypeId) -> Option<&dyn Any>

The half of this parent data whose type is id, if it embeds one.

fn provide_mut(&mut self, id: TypeId) -> Option<&mut dyn Any>

See provide; mirrors it exactly.