Enum ViewKind 

#[non_exhaustive]
pub enum ViewKind {
    Box,
    Row,
    Column,
    Stack,
    ZStack,
    OverlayHost,
    ScrollV {
        on_scroll: Option<ScrollCallback>,
        set_viewport_height: Option<Rc<dyn Fn(f32)>>,
        set_content_height: Option<Rc<dyn Fn(f32)>>,
        get_scroll_offset: Option<Rc<dyn Fn() -> f32>>,
        set_scroll_offset: Option<Rc<dyn Fn(f32)>>,
        show_scrollbar: bool,
        tick_scroll: Option<Rc<dyn Fn()>>,
    },
    ScrollXY {
        on_scroll: Option<ScrollCallback>,
        set_viewport_width: Option<Rc<dyn Fn(f32)>>,
        set_viewport_height: Option<Rc<dyn Fn(f32)>>,
        set_content_width: Option<Rc<dyn Fn(f32)>>,
        set_content_height: Option<Rc<dyn Fn(f32)>>,
        get_scroll_offset_xy: Option<Rc<dyn Fn() -> (f32, f32)>>,
        set_scroll_offset_xy: Option<Rc<dyn Fn(f32, f32)>>,
        show_scrollbar: bool,
        tick_scroll: Option<Rc<dyn Fn()>>,
    },
    Text {
        text: String,
        color: Color,
        font_size: f32,
        soft_wrap: bool,
        max_lines: Option<usize>,
        overflow: TextOverflow,
        font_family: Option<&'static str>,
        annotations: Option<Arc<[TextSpan]>>,
    },
    Image {
        handle: ImageHandle,
        tint: Color,
        fit: ImageFit,
    },
    SubcomposeLayout {
        content: Arc<dyn Fn(&SubcomposeScope) -> Vec<(u64, View)>>,
    },
    Expander {
        expanded: bool,
        on_toggle: Option<Callback>,
    },
    TreeRow {
        depth: usize,
        has_children: bool,
        is_expanded: bool,
        is_selected: bool,
        on_toggle: Option<Callback>,
        on_select: Option<Callback>,
    },
}

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Box

Row

Column

Stack

ZStack

OverlayHost

ScrollV

Fields

on_scroll: Option<ScrollCallback>

set_viewport_height: Option<Rc<dyn Fn(f32)>>

set_content_height: Option<Rc<dyn Fn(f32)>>

get_scroll_offset: Option<Rc<dyn Fn() -> f32>>

set_scroll_offset: Option<Rc<dyn Fn(f32)>>

show_scrollbar: bool

tick_scroll: Option<Rc<dyn Fn()>>

ScrollXY

Fields

on_scroll: Option<ScrollCallback>

set_viewport_width: Option<Rc<dyn Fn(f32)>>

set_viewport_height: Option<Rc<dyn Fn(f32)>>

set_content_width: Option<Rc<dyn Fn(f32)>>

set_content_height: Option<Rc<dyn Fn(f32)>>

get_scroll_offset_xy: Option<Rc<dyn Fn() -> (f32, f32)>>

set_scroll_offset_xy: Option<Rc<dyn Fn(f32, f32)>>

show_scrollbar: bool

tick_scroll: Option<Rc<dyn Fn()>>

Text

Fields

text: String

color: Color

font_size: f32

soft_wrap: bool

max_lines: Option<usize>

overflow: TextOverflow

font_family: Option<&'static str>

annotations: Option<Arc<[TextSpan]>>

Image

Fields

handle: ImageHandle

tint: Color

fit: ImageFit

SubcomposeLayout

A layout whose children are produced by calling content with the current SubcomposeScope. The closure is invoked during reconciliation and returns a list of (slot_id, view) pairs. Each slot id is a stable identity used to reconcile the returned view across frames. This is the building block for BoxWithConstraints and other constraints-driven layouts.

Note: any Modifier::key set on a returned view is overwritten by its slot id so the slot’s identity is stable across frames.

Fields

content: Arc<dyn Fn(&SubcomposeScope) -> Vec<(u64, View)>>

Expander

A collapsible section with a clickable header. First child is the header content; remaining children shown only when expanded.

Fields

expanded: bool

on_toggle: Option<Callback>

TreeRow

A single row in a tree view with indentation and expand/select support. First child is rendered as the row label/content.

Fields

depth: usize

has_children: bool

is_expanded: bool

is_selected: bool

on_toggle: Option<Callback>

on_select: Option<Callback>

Trait Implementations

impl Clone for ViewKind

fn clone(&self) -> ViewKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ViewKind

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

Formats the value using the given formatter.