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Diffstat (limited to '')
| -rw-r--r-- | web/src/widget/slider.rs | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/web/src/widget/slider.rs b/web/src/widget/slider.rs deleted file mode 100644 index 8cbf5bd0..00000000 --- a/web/src/widget/slider.rs +++ /dev/null @@ -1,183 +0,0 @@ -//! Display an interactive selector of a single value from a range of values. -//! -//! A [`Slider`] has some local [`State`]. -use crate::{Bus, Css, Element, Length, Widget}; - -pub use iced_style::slider::{Handle, HandleShape, Style, StyleSheet}; - -use dodrio::bumpalo; -use std::{ops::RangeInclusive, rc::Rc}; - -/// An horizontal bar and a handle that selects a single value from a range of -/// values. -/// -/// A [`Slider`] will try to fill the horizontal space of its container. -/// -/// The [`Slider`] range of numeric values is generic and its step size defaults -/// to 1 unit. -/// -/// # Example -/// ``` -/// # use iced_web::{slider, Slider}; -/// # -/// pub enum Message { -/// SliderChanged(f32), -/// } -/// -/// let state = &mut slider::State::new(); -/// let value = 50.0; -/// -/// Slider::new(state, 0.0..=100.0, value, Message::SliderChanged); -/// ``` -/// -///  -#[allow(missing_debug_implementations)] -pub struct Slider<'a, T, Message> { - _state: &'a mut State, - range: RangeInclusive<T>, - step: T, - value: T, - on_change: Rc<Box<dyn Fn(T) -> Message>>, - #[allow(dead_code)] - width: Length, - #[allow(dead_code)] - style_sheet: Box<dyn StyleSheet + 'a>, -} - -impl<'a, T, Message> Slider<'a, T, Message> -where - T: Copy + From<u8> + std::cmp::PartialOrd, -{ - /// Creates a new [`Slider`]. - /// - /// It expects: - /// * the local [`State`] of the [`Slider`] - /// * an inclusive range of possible values - /// * the current value of the [`Slider`] - /// * a function that will be called when the [`Slider`] is dragged. - /// It receives the new value of the [`Slider`] and must produce a - /// `Message`. - pub fn new<F>( - state: &'a mut State, - range: RangeInclusive<T>, - value: T, - on_change: F, - ) -> Self - where - F: 'static + Fn(T) -> Message, - { - let value = if value >= *range.start() { - value - } else { - *range.start() - }; - - let value = if value <= *range.end() { - value - } else { - *range.end() - }; - - Slider { - _state: state, - value, - range, - step: T::from(1), - on_change: Rc::new(Box::new(on_change)), - width: Length::Fill, - style_sheet: Default::default(), - } - } - - /// Sets the width of the [`Slider`]. - pub fn width(mut self, width: Length) -> Self { - self.width = width; - self - } - - /// Sets the style of the [`Slider`]. - pub fn style( - mut self, - style_sheet: impl Into<Box<dyn StyleSheet + 'a>>, - ) -> Self { - self.style_sheet = style_sheet.into(); - self - } - - /// Sets the step size of the [`Slider`]. - pub fn step(mut self, step: T) -> Self { - self.step = step; - self - } -} - -impl<'a, T, Message> Widget<Message> for Slider<'a, T, Message> -where - T: 'static + Copy + Into<f64> + num_traits::FromPrimitive, - Message: 'static, -{ - fn node<'b>( - &self, - bump: &'b bumpalo::Bump, - bus: &Bus<Message>, - _style_sheet: &mut Css<'b>, - ) -> dodrio::Node<'b> { - use dodrio::builder::*; - use wasm_bindgen::JsCast; - - let (start, end) = self.range.clone().into_inner(); - - let min = bumpalo::format!(in bump, "{}", start.into()); - let max = bumpalo::format!(in bump, "{}", end.into()); - let value = bumpalo::format!(in bump, "{}", self.value.into()); - let step = bumpalo::format!(in bump, "{}", self.step.into()); - - let on_change = self.on_change.clone(); - let event_bus = bus.clone(); - - // TODO: Styling - input(bump) - .attr("type", "range") - .attr("step", step.into_bump_str()) - .attr("min", min.into_bump_str()) - .attr("max", max.into_bump_str()) - .attr("value", value.into_bump_str()) - .attr("style", "width: 100%") - .on("input", move |_root, _vdom, event| { - let slider = match event.target().and_then(|t| { - t.dyn_into::<web_sys::HtmlInputElement>().ok() - }) { - None => return, - Some(slider) => slider, - }; - - if let Ok(value) = slider.value().parse::<f64>() { - if let Some(value) = T::from_f64(value) { - event_bus.publish(on_change(value)); - } - } - }) - .finish() - } -} - -impl<'a, T, Message> From<Slider<'a, T, Message>> for Element<'a, Message> -where - T: 'static + Copy + Into<f64> + num_traits::FromPrimitive, - Message: 'static, -{ - fn from(slider: Slider<'a, T, Message>) -> Element<'a, Message> { - Element::new(slider) - } -} - -/// The local state of a [`Slider`]. -#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)] -pub struct State; - -impl State { - /// Creates a new [`State`]. - pub fn new() -> Self { - Self - } -} |