diff --git a/examples/loading_spinners/Cargo.toml b/examples/loading_spinners/Cargo.toml new file mode 100644 index 0000000000..ee9a48aaf5 --- /dev/null +++ b/examples/loading_spinners/Cargo.toml @@ -0,0 +1,11 @@ +[package] +name = "loading_spinners" +version = "0.1.0" +authors = ["Nick Senger "] +edition = "2021" +publish = false + +[dependencies] +iced = { path = "../..", features = ["advanced", "canvas"] } +lyon_algorithms = "1" +once_cell = "1" diff --git a/examples/loading_spinners/README.md b/examples/loading_spinners/README.md new file mode 100644 index 0000000000..3573c6f6d1 --- /dev/null +++ b/examples/loading_spinners/README.md @@ -0,0 +1,14 @@ +## Loading Spinners + +Example implementation of animated indeterminate loading spinners. + +
+ + + +
+ +You can run it with `cargo run`: +``` +cargo run --package loading_spinners +``` diff --git a/examples/loading_spinners/src/circular.rs b/examples/loading_spinners/src/circular.rs new file mode 100644 index 0000000000..55363de17f --- /dev/null +++ b/examples/loading_spinners/src/circular.rs @@ -0,0 +1,417 @@ +//! Show a circular progress indicator. +use iced::advanced::layout; +use iced::advanced::renderer; +use iced::advanced::widget::tree::{self, Tree}; +use iced::advanced::{Clipboard, Layout, Renderer, Shell, Widget}; +use iced::event; +use iced::time::Instant; +use iced::widget::canvas; +use iced::window::{self, RedrawRequest}; +use iced::{Background, Color, Element, Rectangle}; +use iced::{Event, Length, Point, Size, Vector}; + +use super::easing::{self, Easing}; + +use std::f32::consts::PI; +use std::time::Duration; + +const MIN_RADIANS: f32 = PI / 8.0; +const WRAP_RADIANS: f32 = 2.0 * PI - PI / 4.0; +const BASE_ROTATION_SPEED: u32 = u32::MAX / 80; + +#[allow(missing_debug_implementations)] +pub struct Circular<'a, Theme> +where + Theme: StyleSheet, +{ + size: f32, + bar_height: f32, + style: ::Style, + easing: &'a Easing, + cycle_duration: Duration, + rotation_duration: Duration, +} + +impl<'a, Theme> Circular<'a, Theme> +where + Theme: StyleSheet, +{ + /// Creates a new [`Circular`] with the given content. + pub fn new() -> Self { + Circular { + size: 40.0, + bar_height: 4.0, + style: ::Style::default(), + easing: &easing::STANDARD, + cycle_duration: Duration::from_millis(600), + rotation_duration: Duration::from_secs(2), + } + } + + /// Sets the size of the [`Circular`]. + pub fn size(mut self, size: f32) -> Self { + self.size = size; + self + } + + /// Sets the bar height of the [`Circular`]. + pub fn bar_height(mut self, bar_height: f32) -> Self { + self.bar_height = bar_height; + self + } + + /// Sets the style variant of this [`Circular`]. + pub fn style(mut self, style: ::Style) -> Self { + self.style = style; + self + } + + /// Sets the easing of this [`Circular`]. + pub fn easing(mut self, easing: &'a Easing) -> Self { + self.easing = easing; + self + } + + /// Sets the cycle duration of this [`Circular`]. + pub fn cycle_duration(mut self, duration: Duration) -> Self { + self.cycle_duration = duration / 2; + self + } + + /// Sets the base rotation duration of this [`Circular`]. This is the duration that a full + /// rotation would take if the cycle rotation were set to 0.0 (no expanding or contracting) + pub fn rotation_duration(mut self, duration: Duration) -> Self { + self.rotation_duration = duration; + self + } +} + +impl<'a, Theme> Default for Circular<'a, Theme> +where + Theme: StyleSheet, +{ + fn default() -> Self { + Self::new() + } +} + +#[derive(Clone, Copy)] +enum Animation { + Expanding { + start: Instant, + progress: f32, + rotation: u32, + last: Instant, + }, + Contracting { + start: Instant, + progress: f32, + rotation: u32, + last: Instant, + }, +} + +impl Default for Animation { + fn default() -> Self { + Self::Expanding { + start: Instant::now(), + progress: 0.0, + rotation: 0, + last: Instant::now(), + } + } +} + +impl Animation { + fn next(&self, additional_rotation: u32, now: Instant) -> Self { + match self { + Self::Expanding { rotation, .. } => Self::Contracting { + start: now, + progress: 0.0, + rotation: rotation.wrapping_add(additional_rotation), + last: now, + }, + Self::Contracting { rotation, .. } => Self::Expanding { + start: now, + progress: 0.0, + rotation: rotation.wrapping_add( + BASE_ROTATION_SPEED.wrapping_add( + ((WRAP_RADIANS / (2.0 * PI)) * u32::MAX as f32) as u32, + ), + ), + last: now, + }, + } + } + + fn start(&self) -> Instant { + match self { + Self::Expanding { start, .. } | Self::Contracting { start, .. } => { + *start + } + } + } + + fn last(&self) -> Instant { + match self { + Self::Expanding { last, .. } | Self::Contracting { last, .. } => { + *last + } + } + } + + fn timed_transition( + &self, + cycle_duration: Duration, + rotation_duration: Duration, + now: Instant, + ) -> Self { + let elapsed = now.duration_since(self.start()); + let additional_rotation = ((now - self.last()).as_secs_f32() + / rotation_duration.as_secs_f32() + * (u32::MAX) as f32) as u32; + + match elapsed { + elapsed if elapsed > cycle_duration => { + self.next(additional_rotation, now) + } + _ => self.with_elapsed( + cycle_duration, + additional_rotation, + elapsed, + now, + ), + } + } + + fn with_elapsed( + &self, + cycle_duration: Duration, + additional_rotation: u32, + elapsed: Duration, + now: Instant, + ) -> Self { + let progress = elapsed.as_secs_f32() / cycle_duration.as_secs_f32(); + match self { + Self::Expanding { + start, rotation, .. + } => Self::Expanding { + start: *start, + progress, + rotation: rotation.wrapping_add(additional_rotation), + last: now, + }, + Self::Contracting { + start, rotation, .. + } => Self::Contracting { + start: *start, + progress, + rotation: rotation.wrapping_add(additional_rotation), + last: now, + }, + } + } + + fn rotation(&self) -> f32 { + match self { + Self::Expanding { rotation, .. } + | Self::Contracting { rotation, .. } => { + *rotation as f32 / u32::MAX as f32 + } + } + } +} + +#[derive(Default)] +struct State { + animation: Animation, + cache: canvas::Cache, +} + +impl<'a, Message, Theme> Widget> + for Circular<'a, Theme> +where + Message: 'a + Clone, + Theme: StyleSheet, +{ + fn tag(&self) -> tree::Tag { + tree::Tag::of::() + } + + fn state(&self) -> tree::State { + tree::State::new(State::default()) + } + + fn width(&self) -> Length { + Length::Fixed(self.size) + } + + fn height(&self) -> Length { + Length::Fixed(self.size) + } + + fn layout( + &self, + _renderer: &iced::Renderer, + limits: &layout::Limits, + ) -> layout::Node { + let limits = limits.width(self.size).height(self.size); + 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: &iced::Renderer, + _clipboard: &mut dyn Clipboard, + shell: &mut Shell<'_, Message>, + ) -> event::Status { + const FRAME_RATE: u64 = 60; + + let state = tree.state.downcast_mut::(); + + if let Event::Window(window::Event::RedrawRequested(now)) = event { + state.animation = state.animation.timed_transition( + self.cycle_duration, + self.rotation_duration, + now, + ); + + state.cache.clear(); + shell.request_redraw(RedrawRequest::At( + now + Duration::from_millis(1000 / FRAME_RATE), + )); + } + + event::Status::Ignored + } + + fn draw( + &self, + tree: &Tree, + renderer: &mut iced::Renderer, + theme: &Theme, + _style: &renderer::Style, + layout: Layout<'_>, + _cursor_position: Point, + _viewport: &Rectangle, + ) { + let state = tree.state.downcast_ref::(); + let bounds = layout.bounds(); + let custom_style = + ::appearance(theme, &self.style); + + let geometry = state.cache.draw(renderer, bounds.size(), |frame| { + let track_radius = frame.width() / 2.0 - self.bar_height; + let track_path = canvas::Path::circle(frame.center(), track_radius); + + frame.stroke( + &track_path, + canvas::Stroke::default() + .with_color(custom_style.track_color) + .with_width(self.bar_height), + ); + + let mut builder = canvas::path::Builder::new(); + + let start = state.animation.rotation() * 2.0 * PI; + + match state.animation { + Animation::Expanding { progress, .. } => { + builder.arc(canvas::path::Arc { + center: frame.center(), + radius: track_radius, + start_angle: start, + end_angle: start + + MIN_RADIANS + + WRAP_RADIANS * (self.easing.y_at_x(progress)), + }); + } + Animation::Contracting { progress, .. } => { + builder.arc(canvas::path::Arc { + center: frame.center(), + radius: track_radius, + start_angle: start + + WRAP_RADIANS * (self.easing.y_at_x(progress)), + end_angle: start + MIN_RADIANS + WRAP_RADIANS, + }); + } + } + + let bar_path = builder.build(); + + frame.stroke( + &bar_path, + canvas::Stroke::default() + .with_color(custom_style.bar_color) + .with_width(self.bar_height), + ); + }); + + renderer.with_translation( + Vector::new(bounds.x, bounds.y), + |renderer| { + renderer.draw_primitive(geometry.0); + }, + ); + } +} + +impl<'a, Message, Theme> From> + for Element<'a, Message, iced::Renderer> +where + Message: Clone + 'a, + Theme: StyleSheet + 'a, +{ + fn from(circular: Circular<'a, Theme>) -> Self { + Self::new(circular) + } +} + +#[derive(Debug, Clone, Copy)] +pub struct Appearance { + /// The [`Background`] of the progress indicator. + pub background: Option, + /// The track [`Color`] of the progress indicator. + pub track_color: Color, + /// The bar [`Color`] of the progress indicator. + pub bar_color: Color, +} + +impl std::default::Default for Appearance { + fn default() -> Self { + Self { + background: None, + track_color: Color::TRANSPARENT, + bar_color: Color::BLACK, + } + } +} + +/// A set of rules that dictate the style of an indicator. +pub trait StyleSheet { + /// The supported style of the [`StyleSheet`]. + type Style: Default; + + /// Produces the active [`Appearance`] of a indicator. + fn appearance(&self, style: &Self::Style) -> Appearance; +} + +impl StyleSheet for iced::Theme { + type Style = (); + + fn appearance(&self, _style: &Self::Style) -> Appearance { + let palette = self.extended_palette(); + + Appearance { + background: None, + track_color: palette.background.weak.color, + bar_color: palette.primary.base.color, + } + } +} diff --git a/examples/loading_spinners/src/easing.rs b/examples/loading_spinners/src/easing.rs new file mode 100644 index 0000000000..665b332931 --- /dev/null +++ b/examples/loading_spinners/src/easing.rs @@ -0,0 +1,133 @@ +use iced::Point; + +use lyon_algorithms::measure::PathMeasurements; +use lyon_algorithms::path::{builder::NoAttributes, path::BuilderImpl, Path}; +use once_cell::sync::Lazy; + +pub static EMPHASIZED: Lazy = Lazy::new(|| { + Easing::builder() + .cubic_bezier_to([0.05, 0.0], [0.133333, 0.06], [0.166666, 0.4]) + .cubic_bezier_to([0.208333, 0.82], [0.25, 1.0], [1.0, 1.0]) + .build() +}); + +pub static EMPHASIZED_DECELERATE: Lazy = Lazy::new(|| { + Easing::builder() + .cubic_bezier_to([0.05, 0.7], [0.1, 1.0], [1.0, 1.0]) + .build() +}); + +pub static EMPHASIZED_ACCELERATE: Lazy = Lazy::new(|| { + Easing::builder() + .cubic_bezier_to([0.3, 0.0], [0.8, 0.15], [1.0, 1.0]) + .build() +}); + +pub static STANDARD: Lazy = Lazy::new(|| { + Easing::builder() + .cubic_bezier_to([0.2, 0.0], [0.0, 1.0], [1.0, 1.0]) + .build() +}); + +pub static STANDARD_DECELERATE: Lazy = Lazy::new(|| { + Easing::builder() + .cubic_bezier_to([0.0, 0.0], [0.0, 1.0], [1.0, 1.0]) + .build() +}); + +pub static STANDARD_ACCELERATE: Lazy = Lazy::new(|| { + Easing::builder() + .cubic_bezier_to([0.3, 0.0], [1.0, 1.0], [1.0, 1.0]) + .build() +}); + +pub struct Easing { + path: Path, + measurements: PathMeasurements, +} + +impl Easing { + pub fn builder() -> Builder { + Builder::new() + } + + pub fn y_at_x(&self, x: f32) -> f32 { + let mut sampler = self.measurements.create_sampler( + &self.path, + lyon_algorithms::measure::SampleType::Normalized, + ); + let sample = sampler.sample(x); + + sample.position().y + } +} + +pub struct Builder(NoAttributes); + +impl Builder { + pub fn new() -> Self { + let mut builder = Path::builder(); + builder.begin(lyon_algorithms::geom::point(0.0, 0.0)); + + Self(builder) + } + + /// Adds a line segment. Points must be between 0,0 and 1,1 + pub fn line_to(mut self, to: impl Into) -> Self { + self.0.line_to(Self::point(to)); + + self + } + + /// Adds a quadratic bézier curve. Points must be between 0,0 and 1,1 + pub fn quadratic_bezier_to( + mut self, + ctrl: impl Into, + to: impl Into, + ) -> Self { + self.0 + .quadratic_bezier_to(Self::point(ctrl), Self::point(to)); + + self + } + + /// Adds a cubic bézier curve. Points must be between 0,0 and 1,1 + pub fn cubic_bezier_to( + mut self, + ctrl1: impl Into, + ctrl2: impl Into, + to: impl Into, + ) -> Self { + self.0.cubic_bezier_to( + Self::point(ctrl1), + Self::point(ctrl2), + Self::point(to), + ); + + self + } + + pub fn build(mut self) -> Easing { + self.0.line_to(lyon_algorithms::geom::point(1.0, 1.0)); + self.0.end(false); + + let path = self.0.build(); + let measurements = PathMeasurements::from_path(&path, 0.0); + + Easing { path, measurements } + } + + fn point(p: impl Into) -> lyon_algorithms::geom::Point { + let p: Point = p.into(); + lyon_algorithms::geom::point( + p.x.min(1.0).max(0.0), + p.y.min(1.0).max(0.0), + ) + } +} + +impl Default for Builder { + fn default() -> Self { + Self::new() + } +} diff --git a/examples/loading_spinners/src/linear.rs b/examples/loading_spinners/src/linear.rs new file mode 100644 index 0000000000..ea0807c278 --- /dev/null +++ b/examples/loading_spinners/src/linear.rs @@ -0,0 +1,326 @@ +//! Show a linear progress indicator. +use iced::advanced::layout; +use iced::advanced::renderer::{self, Quad}; +use iced::advanced::widget::tree::{self, Tree}; +use iced::advanced::{Clipboard, Layout, Shell, Widget}; +use iced::event; +use iced::time::Instant; +use iced::window::{self, RedrawRequest}; +use iced::{Background, Color, Element, Rectangle}; +use iced::{Event, Length, Point, Size}; + +use super::easing::{self, Easing}; + +use std::time::Duration; + +#[allow(missing_debug_implementations)] +pub struct Linear<'a, Renderer> +where + Renderer: iced::advanced::Renderer, + Renderer::Theme: StyleSheet, +{ + width: Length, + height: Length, + style: ::Style, + easing: &'a Easing, + cycle_duration: Duration, +} + +impl<'a, Renderer> Linear<'a, Renderer> +where + Renderer: iced::advanced::Renderer, + Renderer::Theme: StyleSheet, +{ + /// Creates a new [`Linear`] with the given content. + pub fn new() -> Self { + Linear { + width: Length::Fixed(100.0), + height: Length::Fixed(4.0), + style: ::Style::default(), + easing: &easing::STANDARD, + cycle_duration: Duration::from_millis(600), + } + } + + /// Sets the width of the [`Linear`]. + pub fn width(mut self, width: impl Into) -> Self { + self.width = width.into(); + self + } + + /// Sets the height of the [`Linear`]. + pub fn height(mut self, height: impl Into) -> Self { + self.height = height.into(); + self + } + + /// Sets the style variant of this [`Linear`]. + pub fn style( + mut self, + style: ::Style, + ) -> Self { + self.style = style; + self + } + + /// Sets the motion easing of this [`Linear`]. + pub fn easing(mut self, easing: &'a Easing) -> Self { + self.easing = easing; + self + } + + /// Sets the cycle duration of this [`Linear`]. + pub fn cycle_duration(mut self, duration: Duration) -> Self { + self.cycle_duration = duration / 2; + self + } +} + +impl<'a, Renderer> Default for Linear<'a, Renderer> +where + Renderer: iced::advanced::Renderer, + Renderer::Theme: StyleSheet, +{ + fn default() -> Self { + Self::new() + } +} + +#[derive(Clone, Copy)] +enum State { + Expanding { start: Instant, progress: f32 }, + Contracting { start: Instant, progress: f32 }, +} + +impl Default for State { + fn default() -> Self { + Self::Expanding { + start: Instant::now(), + progress: 0.0, + } + } +} + +impl State { + fn next(&self, now: Instant) -> Self { + match self { + Self::Expanding { .. } => Self::Contracting { + start: now, + progress: 0.0, + }, + Self::Contracting { .. } => Self::Expanding { + start: now, + progress: 0.0, + }, + } + } + + fn start(&self) -> Instant { + match self { + Self::Expanding { start, .. } | Self::Contracting { start, .. } => { + *start + } + } + } + + fn timed_transition(&self, cycle_duration: Duration, now: Instant) -> Self { + let elapsed = now.duration_since(self.start()); + + match elapsed { + elapsed if elapsed > cycle_duration => self.next(now), + _ => self.with_elapsed(cycle_duration, elapsed), + } + } + + fn with_elapsed( + &self, + cycle_duration: Duration, + elapsed: Duration, + ) -> Self { + let progress = elapsed.as_secs_f32() / cycle_duration.as_secs_f32(); + match self { + Self::Expanding { start, .. } => Self::Expanding { + start: *start, + progress, + }, + Self::Contracting { start, .. } => Self::Contracting { + start: *start, + progress, + }, + } + } +} + +impl<'a, Message, Renderer> Widget for Linear<'a, Renderer> +where + Message: 'a + Clone, + Renderer: 'a + iced::advanced::Renderer, + Renderer::Theme: StyleSheet, +{ + fn tag(&self) -> tree::Tag { + tree::Tag::of::() + } + + fn state(&self) -> tree::State { + tree::State::new(State::default()) + } + + fn width(&self) -> Length { + self.width + } + + fn height(&self) -> Length { + self.height + } + + fn layout( + &self, + _renderer: &Renderer, + limits: &layout::Limits, + ) -> layout::Node { + let limits = limits.width(self.width).height(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 { + const FRAME_RATE: u64 = 60; + + let state = tree.state.downcast_mut::(); + + if let Event::Window(window::Event::RedrawRequested(now)) = event { + *state = state.timed_transition(self.cycle_duration, now); + + shell.request_redraw(RedrawRequest::At( + now + Duration::from_millis(1000 / FRAME_RATE), + )); + } + + event::Status::Ignored + } + + fn draw( + &self, + tree: &Tree, + renderer: &mut Renderer, + theme: &Renderer::Theme, + _style: &renderer::Style, + layout: Layout<'_>, + _cursor_position: Point, + _viewport: &Rectangle, + ) { + let bounds = layout.bounds(); + let custom_style = theme.appearance(&self.style); + let state = tree.state.downcast_ref::(); + + renderer.fill_quad( + renderer::Quad { + bounds: Rectangle { + x: bounds.x, + y: bounds.y, + width: bounds.width, + height: bounds.height, + }, + border_radius: 0.0.into(), + border_width: 0.0, + border_color: Color::TRANSPARENT, + }, + Background::Color(custom_style.track_color), + ); + + match state { + State::Expanding { progress, .. } => renderer.fill_quad( + renderer::Quad { + bounds: Rectangle { + x: bounds.x, + y: bounds.y, + width: self.easing.y_at_x(*progress) * bounds.width, + height: bounds.height, + }, + border_radius: 0.0.into(), + border_width: 0.0, + border_color: Color::TRANSPARENT, + }, + Background::Color(custom_style.bar_color), + ), + + State::Contracting { progress, .. } => renderer.fill_quad( + Quad { + bounds: Rectangle { + x: bounds.x + + self.easing.y_at_x(*progress) * bounds.width, + y: bounds.y, + width: (1.0 - self.easing.y_at_x(*progress)) + * bounds.width, + height: bounds.height, + }, + border_radius: 0.0.into(), + border_width: 0.0, + border_color: Color::TRANSPARENT, + }, + Background::Color(custom_style.bar_color), + ), + } + } +} + +impl<'a, Message, Renderer> From> + for Element<'a, Message, Renderer> +where + Message: Clone + 'a, + Renderer: iced::advanced::Renderer + 'a, + Renderer::Theme: StyleSheet, +{ + fn from(linear: Linear<'a, Renderer>) -> Self { + Self::new(linear) + } +} + +#[derive(Debug, Clone, Copy)] +pub struct Appearance { + /// The track [`Color`] of the progress indicator. + pub track_color: Color, + /// The bar [`Color`] of the progress indicator. + pub bar_color: Color, +} + +impl std::default::Default for Appearance { + fn default() -> Self { + Self { + track_color: Color::TRANSPARENT, + bar_color: Color::BLACK, + } + } +} + +/// A set of rules that dictate the style of an indicator. +pub trait StyleSheet { + /// The supported style of the [`StyleSheet`]. + type Style: Default; + + /// Produces the active [`Appearance`] of a indicator. + fn appearance(&self, style: &Self::Style) -> Appearance; +} + +impl StyleSheet for iced::Theme { + type Style = (); + + fn appearance(&self, _style: &Self::Style) -> Appearance { + let palette = self.extended_palette(); + + Appearance { + track_color: palette.background.weak.color, + bar_color: palette.primary.base.color, + } + } +} diff --git a/examples/loading_spinners/src/main.rs b/examples/loading_spinners/src/main.rs new file mode 100644 index 0000000000..a78e9590ef --- /dev/null +++ b/examples/loading_spinners/src/main.rs @@ -0,0 +1,118 @@ +use iced::executor; +use iced::widget::{column, container, row, slider, text}; +use iced::{Application, Command, Element, Length, Settings, Theme}; + +use std::time::Duration; + +mod circular; +mod easing; +mod linear; + +use circular::Circular; +use linear::Linear; + +pub fn main() -> iced::Result { + LoadingSpinners::run(Settings { + antialiasing: true, + ..Default::default() + }) +} + +struct LoadingSpinners { + cycle_duration: f32, +} + +impl Default for LoadingSpinners { + fn default() -> Self { + Self { + cycle_duration: 2.0, + } + } +} + +#[derive(Debug, Clone, Copy)] +enum Message { + CycleDurationChanged(f32), +} + +impl Application for LoadingSpinners { + type Message = Message; + type Flags = (); + type Executor = executor::Default; + type Theme = Theme; + + fn new(_flags: Self::Flags) -> (Self, Command) { + (Self::default(), Command::none()) + } + + fn title(&self) -> String { + String::from("Loading Spinners - Iced") + } + + fn update(&mut self, message: Message) -> Command { + match message { + Message::CycleDurationChanged(duration) => { + self.cycle_duration = duration; + } + } + + Command::none() + } + + fn view(&self) -> Element { + let column = [ + &easing::EMPHASIZED, + &easing::EMPHASIZED_DECELERATE, + &easing::EMPHASIZED_ACCELERATE, + &easing::STANDARD, + &easing::STANDARD_DECELERATE, + &easing::STANDARD_ACCELERATE, + ] + .iter() + .zip([ + "Emphasized:", + "Emphasized Decelerate:", + "Emphasized Accelerate:", + "Standard:", + "Standard Decelerate:", + "Standard Accelerate:", + ]) + .fold(column![], |column, (easing, label)| { + column.push( + row![ + text(label).width(250), + Linear::new().easing(easing).cycle_duration( + Duration::from_secs_f32(self.cycle_duration) + ), + Circular::new().easing(easing).cycle_duration( + Duration::from_secs_f32(self.cycle_duration) + ) + ] + .align_items(iced::Alignment::Center) + .spacing(20.0), + ) + }) + .spacing(20); + + container( + column.push( + row(vec![ + text("Cycle duration:").into(), + slider(1.0..=1000.0, self.cycle_duration * 100.0, |x| { + Message::CycleDurationChanged(x / 100.0) + }) + .width(200.0) + .into(), + text(format!("{:.2}s", self.cycle_duration)).into(), + ]) + .align_items(iced::Alignment::Center) + .spacing(20.0), + ), + ) + .width(Length::Fill) + .height(Length::Fill) + .center_x() + .center_y() + .into() + } +}