Struct i_slint_core::items::Empty

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#[repr(C)]pub struct Empty {
    pub x: Property<LogicalLength>,
    pub y: Property<LogicalLength>,
    pub width: Property<LogicalLength>,
    pub height: Property<LogicalLength>,
    pub cached_rendering_data: CachedRenderingData,
}

Expand description

The implementation of an empty items that does nothing

Fields

x: Property<LogicalLength>y: Property<LogicalLength>width: Property<LogicalLength>height: Property<LogicalLength>cached_rendering_data: CachedRenderingData

Implementations

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impl Empty

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pub const FIELD_OFFSETS: EmptyFieldsOffsets = _

Return a struct containing the offset of for the fields of this struct

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Trait Implementations

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impl Default for Empty

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fn default() -> Empty

Returns the “default value” for a type. Read more

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impl HasStaticVTable<ItemVTable> for Empty

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fn static_vtable() -> &'static ItemVTable

Safety: must be a valid VTable for Self

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impl Item for Empty

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fn init(self: Pin<&Self>, _window_adapter: &Rc<dyn WindowAdapter>)

This function is called by the run-time after the memory for the item has been allocated and initialized. It will be called before any user specified bindings are set. Read more

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fn geometry(self: Pin<&Self>) -> LogicalRect

Returns the geometry of this item (relative to its parent item)

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fn layout_info(
 self: Pin<&Self>,
 _orientation: Orientation,
 _window_adapter: &Rc<dyn WindowAdapter>
) -> LayoutInfo

We would need max/min/preferred size, and all layout info

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fn input_event_filter_before_children(
 self: Pin<&Self>,
 _: MouseEvent,
 _window_adapter: &Rc<dyn WindowAdapter>,
 _self_rc: &ItemRc
) -> InputEventFilterResult

Event handler for mouse and touch event. This function is called before being called on children. Then, depending on the return value, it is called for the children, and their children, then Self::input_event is called on the children, and finally Self::input_event is called on this item again. Read more

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fn input_event(
 self: Pin<&Self>,
 _: MouseEvent,
 _window_adapter: &Rc<dyn WindowAdapter>,
 _self_rc: &ItemRc
) -> InputEventResult

Handle input event for mouse and touch event

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fn key_event(
 self: Pin<&Self>,
 _: &KeyEvent,
 _window_adapter: &Rc<dyn WindowAdapter>,
 _self_rc: &ItemRc
) -> KeyEventResult

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fn focus_event(
 self: Pin<&Self>,
 _: &FocusEvent,
 _window_adapter: &Rc<dyn WindowAdapter>,
 _self_rc: &ItemRc
) -> FocusEventResult

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fn render(
 self: Pin<&Self>,
 _backend: &mut &'_ mut dyn ItemRenderer,
 _self_rc: &ItemRc
) -> RenderingResult

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impl ItemConsts for Empty

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const cached_rendering_data_offset: FieldOffset<Empty, CachedRenderingData> = _

offset in bytes from the *const ItemImpl. isize::MAX means None Read more

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impl<'__dummy_lifetime> Unpin for Emptywhere
MustNotImplUnpin<'dummy_lifetime>: Unpin,

Auto Trait Implementations

impl !RefUnwindSafe for Empty

impl Send for Empty

impl !Sync for Empty

impl UnwindSafe for Empty

Blanket Implementations

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impl<T> Any for Twhere
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct i_slint_core::items::Empty

Fields

Implementations

impl Empty

pub const FIELD_OFFSETS: EmptyFieldsOffsets = _

impl Empty

pub fn x(self: Pin<&Self>) -> LogicalLength

pub fn y(self: Pin<&Self>) -> LogicalLength

pub fn width(self: Pin<&Self>) -> LogicalLength

pub fn height(self: Pin<&Self>) -> LogicalLength

Trait Implementations

impl Default for Empty

fn default() -> Empty

impl HasStaticVTable<ItemVTable> for Empty

fn static_vtable() -> &'static ItemVTable

impl Item for Empty

fn init(self: Pin<&Self>, _window_adapter: &Rc<dyn WindowAdapter>)

fn geometry(self: Pin<&Self>) -> LogicalRect

fn layout_info( self: Pin<&Self>, _orientation: Orientation, _window_adapter: &Rc<dyn WindowAdapter>) -> LayoutInfo

fn input_event_filter_before_children( self: Pin<&Self>, _: MouseEvent, _window_adapter: &Rc<dyn WindowAdapter>, _self_rc: &ItemRc) -> InputEventFilterResult

fn input_event( self: Pin<&Self>, _: MouseEvent, _window_adapter: &Rc<dyn WindowAdapter>, _self_rc: &ItemRc) -> InputEventResult

fn key_event( self: Pin<&Self>, _: &KeyEvent, _window_adapter: &Rc<dyn WindowAdapter>, _self_rc: &ItemRc) -> KeyEventResult

fn focus_event( self: Pin<&Self>, _: &FocusEvent, _window_adapter: &Rc<dyn WindowAdapter>, _self_rc: &ItemRc) -> FocusEventResult

fn render( self: Pin<&Self>, _backend: &mut &'_ mut dyn ItemRenderer, _self_rc: &ItemRc) -> RenderingResult

impl ItemConsts for Empty

const cached_rendering_data_offset: FieldOffset<Empty, CachedRenderingData> = _

impl<'__dummy_lifetime> Unpin for Emptywhere __MustNotImplUnpin<'__dummy_lifetime>: Unpin,

Auto Trait Implementations

impl !RefUnwindSafe for Empty

impl Send for Empty

impl !Sync for Empty

impl UnwindSafe for Empty

Blanket Implementations

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

fn layout_info(
self: Pin<&Self>,
_orientation: Orientation,
_window_adapter: &Rc<dyn WindowAdapter>
) -> LayoutInfo

fn input_event_filter_before_children(
self: Pin<&Self>,
_: MouseEvent,
_window_adapter: &Rc<dyn WindowAdapter>,
_self_rc: &ItemRc
) -> InputEventFilterResult

fn input_event(
self: Pin<&Self>,
_: MouseEvent,
_window_adapter: &Rc<dyn WindowAdapter>,
_self_rc: &ItemRc
) -> InputEventResult

fn key_event(
self: Pin<&Self>,
_: &KeyEvent,
_window_adapter: &Rc<dyn WindowAdapter>,
_self_rc: &ItemRc
) -> KeyEventResult

fn focus_event(
self: Pin<&Self>,
_: &FocusEvent,
_window_adapter: &Rc<dyn WindowAdapter>,
_self_rc: &ItemRc
) -> FocusEventResult

fn render(
self: Pin<&Self>,
_backend: &mut &'_ mut dyn ItemRenderer,
_self_rc: &ItemRc
) -> RenderingResult

impl<'__dummy_lifetime> Unpin for Emptywhere
MustNotImplUnpin<'dummy_lifetime>: Unpin,

impl<T> Any for Twhere
T: 'static + ?Sized,

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,