Struct Label 

pub struct Label { /* private fields */ }

Implementations

impl Label

pub fn try_downcast( element: &(dyn ElementExt + 'static), ) -> Option<LabelElement>

pub fn text(self, text: impl Into<Cow<'static, str>>) -> Label

Set the text content of the label.

pub fn max_lines(self, max_lines: impl Into<Option<usize>>) -> Label

Limit the label to at most this many lines, truncating the rest. Pass None for no limit.

pub fn line_height(self, line_height: impl Into<Option<f32>>) -> Label

Override the height of each line as a multiple of the font size. Pass None for the default.

Trait Implementations

impl AccessibilityExt for Label

fn get_accessibility_data(&mut self) -> &mut AccessibilityData

Returns a mutable reference to the element’s accessibility data.

fn accessibility(self, accessibility: AccessibilityData) -> Self

Replace all of the element’s accessibility data at once. See AccessibilityData.

fn a11y_id(self, a11y_id: impl Into<Option<NodeId>>) -> Self

Set an explicit accessibility id instead of an autogenerated one. See AccessibilityId.

fn a11y_focusable(self, a11y_focusable: impl Into<Focusable>) -> Self

Set whether the element can receive keyboard focus. See Focusable.

fn a11y_auto_focus(self, a11y_auto_focus: impl Into<bool>) -> Self

Request that the element be focused automatically when it is mounted.

fn a11y_member_of(self, a11y_member_of: impl Into<NodeId>) -> Self

Mark the element as a member of the group identified by the given AccessibilityId.

fn a11y_role(self, a11y_role: impl Into<Role>) -> Self

Set the accessibility role exposed in the accessibility tree. See AccessibilityRole.

fn a11y_alt(self, value: impl Into<Box<str>>) -> Self

Set the text label that describes the element in the accessibility tree.

fn a11y_builder(self, with: impl FnOnce(&mut Node)) -> Self

Edit the underlying accesskit node directly for advanced accessibility properties.

impl ContainerExt for Label

fn position(self, position: impl Into<Position>) -> Self

Set how the element is placed relative to its parent or the window. See Position.

fn padding(self, padding: impl Into<Gaps>) -> Self

Set the inner spacing between the element’s edges and its content. See Gaps.

fn margin(self, margin: impl Into<Gaps>) -> Self

Set the outer spacing between the element’s edges and its surroundings. See Gaps.

fn min_width(self, minimum_width: impl Into<Size>) -> Self

Set the minimum width the element can shrink to. See Size.

fn min_height(self, minimum_height: impl Into<Size>) -> Self

Set the minimum height the element can shrink to. See Size.

fn max_width(self, maximum_width: impl Into<Size>) -> Self

Set the maximum width the element can grow to. See Size.

fn max_height(self, maximum_height: impl Into<Size>) -> Self

Set the maximum height the element can grow to. See Size.

fn visible_width(self, visible_width: impl Into<VisibleSize>) -> Self

Set how much of the measured width is actually used in layout. See VisibleSize.

fn visible_height(self, visible_height: impl Into<VisibleSize>) -> Self

Set how much of the measured height is actually used in layout. See VisibleSize.

impl EventHandlersExt for Label

fn get_event_handlers( &mut self, ) -> &mut HashMap<EventName, EventHandlerType, FxBuildHasher>

Returns a mutable reference to the element’s event handler map.

fn with_event_handlers( self, event_handlers: HashMap<EventName, EventHandlerType, FxBuildHasher>, ) -> Self

Replace all of this element’s event handlers with the given map.

fn on_mouse_down( self, on_mouse_down: impl Into<EventHandler<Event<MouseEventData>>>, ) -> Self

Fires when a mouse button is pressed down over the element.

fn on_mouse_up( self, on_mouse_up: impl Into<EventHandler<Event<MouseEventData>>>, ) -> Self

Fires when a mouse button is released over the element.

fn on_mouse_move( self, on_mouse_move: impl Into<EventHandler<Event<MouseEventData>>>, ) -> Self

Fires when the cursor moves over the element.

fn on_global_pointer_press( self, on_global_pointer_press: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Fires when a pointer (mouse or touch) is pressed anywhere, even outside the element.

fn on_global_pointer_down( self, on_global_pointer_down: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Fires when a pointer (mouse or touch) goes down anywhere, even outside the element.

fn on_global_pointer_move( self, on_global_pointer_move: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Fires when a pointer (mouse or touch) moves anywhere, even outside the element.

fn on_capture_global_pointer_move( self, on_capture_global_pointer_move: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Like on_global_pointer_move, but fires during the top-down capture phase.

fn on_capture_global_pointer_press( self, on_capture_global_pointer_press: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Like on_global_pointer_press, but fires during the top-down capture phase.

fn on_key_down( self, on_key_down: impl Into<EventHandler<Event<KeyboardEventData>>>, ) -> Self

Fires when a key is pressed down while the element is focused.

fn on_key_up( self, on_key_up: impl Into<EventHandler<Event<KeyboardEventData>>>, ) -> Self

Fires when a key is released while the element is focused.

fn on_global_key_down( self, on_global_key_down: impl Into<EventHandler<Event<KeyboardEventData>>>, ) -> Self

Fires when a key is pressed down, regardless of which element is focused.

fn on_global_key_up( self, on_global_key_up: impl Into<EventHandler<Event<KeyboardEventData>>>, ) -> Self

Fires when a key is released, regardless of which element is focused.

fn on_wheel( self, on_wheel: impl Into<EventHandler<Event<WheelEventData>>>, ) -> Self

Fires when the scroll wheel is used over the element.

fn on_touch_cancel( self, on_touch_cancel: impl Into<EventHandler<Event<TouchEventData>>>, ) -> Self

Fires when an ongoing touch is cancelled by the system.

fn on_touch_start( self, on_touch_start: impl Into<EventHandler<Event<TouchEventData>>>, ) -> Self

Fires when a touch point is placed on the element.

fn on_touch_move( self, on_touch_move: impl Into<EventHandler<Event<TouchEventData>>>, ) -> Self

Fires when a touch point moves across the element.

fn on_touch_end( self, on_touch_end: impl Into<EventHandler<Event<TouchEventData>>>, ) -> Self

Fires when a touch point is lifted from the element.

fn on_pointer_press( self, on_pointer_press: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Fires when the element is pressed and released by a pointer (mouse or touch).

fn on_pointer_down( self, on_pointer_down: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Fires when a pointer (mouse or touch) goes down over the element.

fn on_pointer_move( self, on_pointer_move: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Fires when a pointer (mouse or touch) moves over the element.

fn on_pointer_enter( self, on_pointer_enter: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Fires when a pointer enters the element.

fn on_pointer_leave( self, on_pointer_leave: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Fires when a pointer leaves the element.

fn on_pointer_over( self, on_pointer_over: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Fires when a pointer is over the element, including over its children.

fn on_pointer_out( self, on_pointer_out: impl Into<EventHandler<Event<PointerEventData>>>, ) -> Self

Fires when a pointer leaves the element or one of its children.

fn on_file_drop( self, on_file_drop: impl Into<EventHandler<Event<FileEventData>>>, ) -> Self

Fires when a file is dropped onto the element.

fn on_global_file_hover( self, on_global_file_hover: impl Into<EventHandler<Event<FileEventData>>>, ) -> Self

Fires when a dragged file hovers anywhere over the window.

fn on_global_file_hover_cancelled( self, on_global_file_hover_cancelled: impl Into<EventHandler<Event<FileEventData>>>, ) -> Self

Fires when a dragged file stops hovering over the window.

fn on_ime_preedit( self, on_ime_preedit: impl Into<EventHandler<Event<ImePreeditEventData>>>, ) -> Self

Fires while text is being composed through an input method editor (IME).

fn on_sized( self, on_sized: impl Into<EventHandler<Event<SizedEventData>>>, ) -> Self

where Self: LayoutExt,

Fires when the element’s measured size or position changes.

fn on_press( self, on_press: impl Into<EventHandler<Event<PressEventData>>>, ) -> Self

This is generally the best event in which to run “press” logic, this might be called onClick, onActivate, or onConnect in other platforms.

fn on_secondary_down( self, on_secondary_down: impl Into<EventHandler<Event<PressEventData>>>, ) -> Self

Also called the context menu click in other platforms. Gets triggered when:

fn on_all_press( self, on_press: impl Into<EventHandler<Event<PressEventData>>>, ) -> Self

Gets triggered when:

fn on_focus_press( self, on_focus_press: impl Into<EventHandler<Event<FocusPressEventData>>>, ) -> Self

Gets triggered when:

impl From<Label> for Element

fn from(value: Label) -> Element

Converts to this type from the input type.

impl KeyExt for Label

fn write_key(&mut self) -> &mut DiffKey

Returns a mutable reference to the element’s diff key.

fn key(self, key: impl Hash) -> Self

Assign a key derived from any hashable value, used to reconcile elements in dynamic lists.

impl LabelThemeExt for Label

fn theme_color(self) -> Label

fn title(self) -> Label

Apply the theme’s title font size (largest heading level).

fn subtitle(self) -> Label

Apply the theme’s subtitle font size (secondary heading level).

fn body(self) -> Label

Apply the theme’s body font size (default body text).

fn caption(self) -> Label

Apply the theme’s caption font size (smaller annotation text).

fn overline(self) -> Label

Apply the theme’s overline font size (smallest accent text).

impl LayerExt for Label

fn get_layer(&mut self) -> &mut Layer

Returns a mutable reference to the element’s layer.

fn layer(self, layer: impl Into<Layer>) -> Self

Set the painting layer of the element. See Layer.

impl LayoutExt for Label

fn get_layout(&mut self) -> &mut LayoutData

Returns a mutable reference to the element’s layout data.

fn layout(self, layout: LayoutData) -> Self

Replace all of the element’s layout data at once. See LayoutData.

impl MaybeExt for Label

fn maybe(self, bool: impl Into<bool>, then: impl FnOnce(Self) -> Self) -> Self

Apply then to the element only when the condition is true.

fn map<T>(self, data: Option<T>, then: impl FnOnce(Self, T) -> Self) -> Self

Apply then to the element only when the Option is Some, passing the inner value.

impl TextStyleExt for Label

fn get_text_style_data(&mut self) -> &mut TextStyleData

Returns a mutable reference to the element’s text style data.

fn text_style(self, data: TextStyleData) -> Self

Replace all of the element’s text style data at once. See TextStyleData.

fn color(self, color: impl Into<Color>) -> Self

Set the text color to a solid Color.

fn color_conic_gradient<S>(self, color: S) -> Self

where S: Into<ConicGradient>,

Paint the text with a ConicGradient.

fn color_linear_gradient<S>(self, color: S) -> Self

where S: Into<LinearGradient>,

Paint the text with a LinearGradient.

fn color_radial_gradient<S>(self, color: S) -> Self

where S: Into<RadialGradient>,

Paint the text with a RadialGradient.

fn color_shader(self, color: impl Into<ShaderFill>) -> Self

Paint the text with a custom shader. See ShaderFill.

fn text_align(self, text_align: impl Into<TextAlign>) -> Self

Set the horizontal alignment of the text. See TextAlign.

fn font_size(self, font_size: impl Into<FontSize>) -> Self

Set the text size in pixels. See FontSize.

fn font_family(self, font_family: impl Into<Cow<'static, str>>) -> Self

Add a font family to try, in order of preference.

fn font_slant(self, font_slant: impl Into<FontSlant>) -> Self

Set the slant (style) of the font. See FontSlant.

fn font_weight(self, font_weight: impl Into<FontWeight>) -> Self

Set the thickness of the font. See FontWeight.

fn font_width(self, font_width: impl Into<FontWidth>) -> Self

Set the horizontal width of the font. See FontWidth.

fn text_height(self, text_height: impl Into<TextHeightBehavior>) -> Self

Set how the leading of the first and last lines is handled. See TextHeightBehavior.

fn text_overflow(self, text_overflow: impl Into<TextOverflow>) -> Self

Set how text that does not fit its bounds is truncated. See TextOverflow.

fn text_shadow(self, text_shadow: impl Into<TextShadow>) -> Self

Add a shadow cast behind the text. See TextShadow.

fn text_decoration(self, text_decoration: impl Into<TextDecoration>) -> Self

Set a line drawn through, under or over the text. See TextDecoration.