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Diffstat (limited to 'pure/src/widget/slider.rs')
| -rw-r--r-- | pure/src/widget/slider.rs | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/pure/src/widget/slider.rs b/pure/src/widget/slider.rs deleted file mode 100644 index fed979e5..00000000 --- a/pure/src/widget/slider.rs +++ /dev/null @@ -1,255 +0,0 @@ -//! Display an interactive selector of a single value from a range of values. -use crate::widget::tree::{self, Tree}; -use crate::{Element, Widget}; - -use iced_native::event::{self, Event}; -use iced_native::layout; -use iced_native::mouse; -use iced_native::renderer; -use iced_native::widget::slider; -use iced_native::{Clipboard, Layout, Length, Point, Rectangle, Shell, Size}; - -use std::ops::RangeInclusive; - -pub use iced_style::slider::{Appearance, Handle, HandleShape, StyleSheet}; - -/// 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_pure::widget::slider; -/// # use iced_native::renderer::Null; -/// # -/// # type Slider<'a, T, Message> = slider::Slider<'a, T, Message, Null>; -/// # -/// #[derive(Clone)] -/// pub enum Message { -/// SliderChanged(f32), -/// } -/// -/// let value = 50.0; -/// -/// Slider::new(0.0..=100.0, value, Message::SliderChanged); -/// ``` -/// -///  -#[allow(missing_debug_implementations)] -pub struct Slider<'a, T, Message, Renderer> -where - Renderer: iced_native::Renderer, - Renderer::Theme: StyleSheet, -{ - range: RangeInclusive<T>, - step: T, - value: T, - on_change: Box<dyn Fn(T) -> Message + 'a>, - on_release: Option<Message>, - width: Length, - height: u16, - style: <Renderer::Theme as StyleSheet>::Style, -} - -impl<'a, T, Message, Renderer> Slider<'a, T, Message, Renderer> -where - T: Copy + From<u8> + std::cmp::PartialOrd, - Message: Clone, - Renderer: iced_native::Renderer, - Renderer::Theme: StyleSheet, -{ - /// The default height of a [`Slider`]. - pub const DEFAULT_HEIGHT: u16 = 22; - - /// Creates a new [`Slider`]. - /// - /// It expects: - /// * 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>(range: RangeInclusive<T>, value: T, on_change: F) -> Self - where - F: 'a + Fn(T) -> Message, - { - let value = if value >= *range.start() { - value - } else { - *range.start() - }; - - let value = if value <= *range.end() { - value - } else { - *range.end() - }; - - Slider { - value, - range, - step: T::from(1), - on_change: Box::new(on_change), - on_release: None, - width: Length::Fill, - height: Self::DEFAULT_HEIGHT, - style: Default::default(), - } - } - - /// Sets the release message of the [`Slider`]. - /// This is called when the mouse is released from the slider. - /// - /// Typically, the user's interaction with the slider is finished when this message is produced. - /// This is useful if you need to spawn a long-running task from the slider's result, where - /// the default on_change message could create too many events. - pub fn on_release(mut self, on_release: Message) -> Self { - self.on_release = Some(on_release); - self - } - - /// Sets the width of the [`Slider`]. - pub fn width(mut self, width: Length) -> Self { - self.width = width; - self - } - - /// Sets the height of the [`Slider`]. - pub fn height(mut self, height: u16) -> Self { - self.height = height; - self - } - - /// Sets the style of the [`Slider`]. - pub fn style( - mut self, - style: impl Into<<Renderer::Theme as StyleSheet>::Style>, - ) -> Self { - self.style = style.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, Renderer> Widget<Message, Renderer> - for Slider<'a, T, Message, Renderer> -where - T: Copy + Into<f64> + num_traits::FromPrimitive, - Message: Clone, - Renderer: iced_native::Renderer, - Renderer::Theme: StyleSheet, -{ - fn tag(&self) -> tree::Tag { - tree::Tag::of::<slider::State>() - } - - fn state(&self) -> tree::State { - tree::State::new(slider::State::new()) - } - - fn width(&self) -> Length { - self.width - } - - fn height(&self) -> Length { - Length::Shrink - } - - fn layout( - &self, - _renderer: &Renderer, - limits: &layout::Limits, - ) -> layout::Node { - let limits = - limits.width(self.width).height(Length::Units(self.height)); - - let size = limits.resolve(Size::ZERO); - - layout::Node::new(size) - } - - fn on_event( - &mut self, - tree: &mut Tree, - event: Event, - layout: Layout<'_>, - cursor_position: Point, - _renderer: &Renderer, - _clipboard: &mut dyn Clipboard, - shell: &mut Shell<'_, Message>, - ) -> event::Status { - slider::update( - event, - layout, - cursor_position, - shell, - tree.state.downcast_mut::<slider::State>(), - &mut self.value, - &self.range, - self.step, - self.on_change.as_ref(), - &self.on_release, - ) - } - - fn draw( - &self, - tree: &Tree, - renderer: &mut Renderer, - theme: &Renderer::Theme, - _style: &renderer::Style, - layout: Layout<'_>, - cursor_position: Point, - _viewport: &Rectangle, - ) { - slider::draw( - renderer, - layout, - cursor_position, - tree.state.downcast_ref::<slider::State>(), - self.value, - &self.range, - theme, - self.style, - ) - } - - fn mouse_interaction( - &self, - tree: &Tree, - layout: Layout<'_>, - cursor_position: Point, - _viewport: &Rectangle, - _renderer: &Renderer, - ) -> mouse::Interaction { - slider::mouse_interaction( - layout, - cursor_position, - tree.state.downcast_ref::<slider::State>(), - ) - } -} - -impl<'a, T, Message, Renderer> From<Slider<'a, T, Message, Renderer>> - for Element<'a, Message, Renderer> -where - T: 'a + Copy + Into<f64> + num_traits::FromPrimitive, - Message: 'a + Clone, - Renderer: 'a + iced_native::Renderer, - Renderer::Theme: StyleSheet, -{ - fn from( - slider: Slider<'a, T, Message, Renderer>, - ) -> Element<'a, Message, Renderer> { - Element::new(slider) - } -} |