Enum Overflow 

pub enum Overflow {
    Visible,
    Clip,
    Hidden,
    Scroll,
}

How children overflowing their container should affect layout

In CSS the primary effect of this property is to control whether contents of a parent container that overflow that container should be displayed anyway, be clipped, or trigger the container to become a scroll container. However it also has secondary effects on layout, the main ones being:

• The automatic minimum size Flexbox/CSS Grid items with non-Visible overflow is 0 rather than being content based
• Overflow::Scroll nodes have space in the layout reserved for a scrollbar (width controlled by the scrollbar_width property)

In Taffy, we only implement the layout related secondary effects as we are not concerned with drawing/painting. The amount of space reserved for a scrollbar is controlled by the scrollbar_width property. If this is 0 then Scroll behaves identically to Hidden.

https://developer.mozilla.org/en-US/docs/Web/CSS/overflow

Variants

Visible

The automatic minimum size of this node as a flexbox/grid item should be based on the size of its content. Content that overflows this node should contribute to the scroll region of its parent.

Clip

The automatic minimum size of this node as a flexbox/grid item should be based on the size of its content. Content that overflows this node should not contribute to the scroll region of its parent.

Hidden

The automatic minimum size of this node as a flexbox/grid item should be 0. Content that overflows this node should not contribute to the scroll region of its parent.

Scroll

The automatic minimum size of this node as a flexbox/grid item should be 0. Additionally, space should be reserved for a scrollbar. The amount of space reserved is controlled by the scrollbar_width property. Content that overflows this node should not contribute to the scroll region of its parent.

Implementations

impl Overflow

pub fn is_scroll_container(self) -> bool

Returns true for overflow modes that contain their contents (Overflow::Hidden, Overflow::Scroll, Overflow::Auto) or else false for overflow modes that allow their contains to spill (Overflow::Visible).

pub(crate) fn maybe_into_automatic_min_size(self) -> Option<f32>

Returns Some(0.0) if the overflow mode would cause the automatic minimum size of a Flexbox or CSS Grid item to be 0. Else returns None.

Trait Implementations

impl Clone for Overflow

fn clone(&self) -> Overflow

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Overflow

impl Debug for Overflow

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

Formats the value using the given formatter.

impl Default for Overflow

fn default() -> Overflow

Returns the “default value” for a type.

impl Eq for Overflow

impl PartialEq for Overflow

fn eq(&self, other: &Overflow) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Overflow