Struct druid::widget::Button

pub struct Button<T> { /* fields omitted */ }

A button with a text label.

Methods

impl<T: Data> Button<T>

pub fn new(text: impl Into<LabelText<T>>) -> Button<T>

Create a new button with a text label.

Use the .on_click method to provide a closure to be called when the button is clicked.

Examples

use druid::widget::Button;

let button = Button::new("Increment").on_click(|_ctx, data: &mut u32, _env| {
    *data += 1;
});

pub fn on_click(
    self,
    f: impl Fn(&mut EventCtx, &mut T, &Env) + 'static
) -> ControllerHost<Self, Click<T>>

Provide a closure to be called when this button is clicked.

Trait Implementations

impl<T: Data> Widget<T> for Button<T>

fn event(
    &mut self,
    ctx: &mut EventCtx,
    event: &Event,
    _data: &mut T,
    _env: &Env
)

Handle an event.

fn lifecycle(
    &mut self,
    ctx: &mut LifeCycleCtx,
    event: &LifeCycle,
    data: &T,
    env: &Env
)

Handle a life cycle notification.

fn update(&mut self, ctx: &mut UpdateCtx, old_data: &T, data: &T, env: &Env)

Handle a change of data.

fn layout(
    &mut self,
    layout_ctx: &mut LayoutCtx,
    bc: &BoxConstraints,
    data: &T,
    env: &Env
) -> Size

Compute layout.

fn paint(&mut self, ctx: &mut PaintCtx, data: &T, env: &Env)

Paint the widget appearance.