Struct LayoutCx

pub struct LayoutCx<'a, 'b> { /* private fields */ }

A context for laying out the view tree.

Implementations

impl<'a, 'b> LayoutCx<'a, 'b>

pub fn new( base: &'a mut BaseCx<'b>, view_state: &'a mut ViewState, ) -> LayoutCx<'a, 'b>

Create a new layout context.

pub fn child(&mut self) -> LayoutCx<'_, 'b>

Create a child context.

impl LayoutCx<'_, '_>

pub fn window(&self) -> &Window

Get the window.

pub fn window_mut(&mut self) -> &mut Window

Get the window mutably.

pub fn styles(&mut self) -> &mut Styles

Get the styles.

pub fn style<T>(&mut self) -> &T

where T: Style + Any,

Get the style T.

pub fn theme(&mut self) -> &Theme

Get the Theme of the context.

pub fn id(&self) -> ViewId

Get the id of the view.

pub fn is_hovered(&self) -> bool

Get whether the view is hovered.

pub fn is_focused(&self) -> bool

Get whether the view is focused.

pub fn is_active(&self) -> bool

Get whether the view is active.

pub fn is_focusable(&self) -> bool

Get whether the view is focusable.

pub fn has_hovered(&self) -> bool

Get whether a child view is hovered.

pub fn has_focused(&self) -> bool

Get whether a child view is focused.

pub fn has_active(&self) -> bool

Get whether a child view is active.

pub fn contains_property<T>(&self) -> bool

where T: 'static,

Check if the view has the property T.

pub fn insert_property<T>(&mut self, item: T)

where T: 'static,

Insert a property into the view.

pub fn remove_property<T>(&mut self) -> Option<T>

where T: 'static,

Remove a property from the view.

pub fn get_property<T>(&self) -> Option<&T>

where T: 'static,

Get the property T of the view.

pub fn get_property_mut<T>(&mut self) -> Option<&mut T>

where T: 'static,

Get the property T of the view mutably.

pub fn property_or_insert_with<T, F>(&mut self, f: F) -> &mut T

where T: 'static, F: FnOnce() -> T,

Get the property T of the view or insert it with a value.

pub fn property_or<T>(&mut self, item: T) -> &mut T

where T: 'static,

Get the property T of the view or insert it with a value.

pub fn property_or_default<T>(&mut self) -> &mut T

where T: 'static + Default,

Get the property T of the view or insert it with a default value.

Methods from Deref<Target = BaseCx<'b>>

pub fn fonts(&mut self) -> &mut (dyn Fonts + 'static)

Get the Fonts as a mutable reference.

pub fn measure_paragraph(&mut self, paragraph: &Paragraph, width: f32) -> Size

Measure a paragraph.

pub fn layout_paragraph( &mut self, paragraph: &Paragraph, width: f32, ) -> Vec<TextLayoutLine>

Layout a paragraph.

pub fn clipboard(&mut self) -> &mut Clipboard

Get the Clipboard.

pub fn proxy(&self) -> CommandProxy

Get the CommandProxy.

pub fn cmd<T>(&mut self, command: T)

where T: Any + Send,

Emit a command.

pub fn spawn_async(&mut self, future: impl Future<Output = ()> + Send + 'static)

Spawn a future.

pub fn cmd_async<T>(&self, future: impl Future<Output = T> + Send + 'static)

where T: Any + Send,

Spawn a future sending a command when it completes.

pub fn contexts(&self) -> &Contexts

Get a reference to the Contexts.

pub fn contexts_mut(&mut self) -> &mut Contexts

Get a mutable reference to the Contexts.

pub fn insert_context<T>(&mut self, context: T) -> Option<T>

where T: Any,

Insert a context.

pub fn contains_context<T>(&self) -> bool

where T: Any,

Check if a context is contained.

pub fn remove_context<T>(&mut self) -> Option<T>

where T: Any,

Remove a context.

pub fn get_context<T>(&self) -> Option<&T>

where T: Any,

Get a context.

pub fn get_context_mut<T>(&mut self) -> Option<&mut T>

where T: Any,

Get a mutable context.

pub fn context<T>(&self) -> &T

where T: Any,

Get a context.

Panics

• If the context is not found.

pub fn context_mut<T>(&mut self) -> &mut T

where T: Any,

Get a mutable context.

Panics

• If the context is not found.

pub fn context_or_default<T>(&mut self) -> &mut T

where T: Any + Default,

Get a context or insert a default.

Trait Implementations

impl<'b> Deref for LayoutCx<'_, 'b>

type Target = BaseCx<'b>

The resulting type after dereferencing.

fn deref(&self) -> &<LayoutCx<'_, 'b> as Deref>::Target

Dereferences the value.

impl DerefMut for LayoutCx<'_, '_>

fn deref_mut(&mut self) -> &mut <LayoutCx<'_, '_> as Deref>::Target

Mutably dereferences the value.