326 lines
8.6 KiB
Rust
326 lines
8.6 KiB
Rust
//! Create choices using radio buttons.
|
|
use crate::alignment;
|
|
use crate::event::{self, Event};
|
|
use crate::layout;
|
|
use crate::mouse;
|
|
use crate::renderer;
|
|
use crate::text;
|
|
use crate::touch;
|
|
use crate::widget::{self, Row, Text, Tree};
|
|
use crate::{
|
|
Alignment, Clipboard, Color, Element, Layout, Length, Pixels, Point,
|
|
Rectangle, Shell, Widget,
|
|
};
|
|
|
|
pub use iced_style::radio::{Appearance, StyleSheet};
|
|
|
|
/// A circular button representing a choice.
|
|
///
|
|
/// # Example
|
|
/// ```
|
|
/// # type Radio<Message> =
|
|
/// # iced_native::widget::Radio<Message, iced_native::renderer::Null>;
|
|
/// #
|
|
/// # use iced_native::column;
|
|
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
|
|
/// pub enum Choice {
|
|
/// A,
|
|
/// B,
|
|
/// C,
|
|
/// All,
|
|
/// }
|
|
///
|
|
/// #[derive(Debug, Clone, Copy)]
|
|
/// pub enum Message {
|
|
/// RadioSelected(Choice),
|
|
/// }
|
|
///
|
|
/// let selected_choice = Some(Choice::A);
|
|
///
|
|
/// let a = Radio::new(
|
|
/// "A",
|
|
/// Choice::A,
|
|
/// selected_choice,
|
|
/// Message::RadioSelected,
|
|
/// );
|
|
///
|
|
/// let b = Radio::new(
|
|
/// "B",
|
|
/// Choice::B,
|
|
/// selected_choice,
|
|
/// Message::RadioSelected,
|
|
/// );
|
|
///
|
|
/// let c = Radio::new(
|
|
/// "C",
|
|
/// Choice::C,
|
|
/// selected_choice,
|
|
/// Message::RadioSelected,
|
|
/// );
|
|
///
|
|
/// let all = Radio::new(
|
|
/// "All of the above",
|
|
/// Choice::All,
|
|
/// selected_choice,
|
|
/// Message::RadioSelected
|
|
/// );
|
|
///
|
|
/// let content = column![a, b, c, all];
|
|
/// ```
|
|
#[allow(missing_debug_implementations)]
|
|
pub struct Radio<Message, Renderer>
|
|
where
|
|
Renderer: text::Renderer,
|
|
Renderer::Theme: StyleSheet,
|
|
{
|
|
is_selected: bool,
|
|
on_click: Message,
|
|
label: String,
|
|
width: Length,
|
|
size: f32,
|
|
spacing: f32,
|
|
text_size: Option<f32>,
|
|
font: Renderer::Font,
|
|
style: <Renderer::Theme as StyleSheet>::Style,
|
|
}
|
|
|
|
impl<Message, Renderer> Radio<Message, Renderer>
|
|
where
|
|
Message: Clone,
|
|
Renderer: text::Renderer,
|
|
Renderer::Theme: StyleSheet,
|
|
{
|
|
/// The default size of a [`Radio`] button.
|
|
pub const DEFAULT_SIZE: f32 = 28.0;
|
|
|
|
/// The default spacing of a [`Radio`] button.
|
|
pub const DEFAULT_SPACING: f32 = 15.0;
|
|
|
|
/// Creates a new [`Radio`] button.
|
|
///
|
|
/// It expects:
|
|
/// * the value related to the [`Radio`] button
|
|
/// * the label of the [`Radio`] button
|
|
/// * the current selected value
|
|
/// * a function that will be called when the [`Radio`] is selected. It
|
|
/// receives the value of the radio and must produce a `Message`.
|
|
pub fn new<F, V>(
|
|
label: impl Into<String>,
|
|
value: V,
|
|
selected: Option<V>,
|
|
f: F,
|
|
) -> Self
|
|
where
|
|
V: Eq + Copy,
|
|
F: FnOnce(V) -> Message,
|
|
{
|
|
Radio {
|
|
is_selected: Some(value) == selected,
|
|
on_click: f(value),
|
|
label: label.into(),
|
|
width: Length::Shrink,
|
|
size: Self::DEFAULT_SIZE,
|
|
spacing: Self::DEFAULT_SPACING, //15
|
|
text_size: None,
|
|
font: Default::default(),
|
|
style: Default::default(),
|
|
}
|
|
}
|
|
|
|
/// Sets the size of the [`Radio`] button.
|
|
pub fn size(mut self, size: impl Into<Pixels>) -> Self {
|
|
self.size = size.into().0;
|
|
self
|
|
}
|
|
|
|
/// Sets the width of the [`Radio`] button.
|
|
pub fn width(mut self, width: impl Into<Length>) -> Self {
|
|
self.width = width.into();
|
|
self
|
|
}
|
|
|
|
/// Sets the spacing between the [`Radio`] button and the text.
|
|
pub fn spacing(mut self, spacing: impl Into<Pixels>) -> Self {
|
|
self.spacing = spacing.into().0;
|
|
self
|
|
}
|
|
|
|
/// Sets the text size of the [`Radio`] button.
|
|
pub fn text_size(mut self, text_size: impl Into<Pixels>) -> Self {
|
|
self.text_size = Some(text_size.into().0);
|
|
self
|
|
}
|
|
|
|
/// Sets the text font of the [`Radio`] button.
|
|
pub fn font(mut self, font: Renderer::Font) -> Self {
|
|
self.font = font;
|
|
self
|
|
}
|
|
|
|
/// Sets the style of the [`Radio`] button.
|
|
pub fn style(
|
|
mut self,
|
|
style: impl Into<<Renderer::Theme as StyleSheet>::Style>,
|
|
) -> Self {
|
|
self.style = style.into();
|
|
self
|
|
}
|
|
}
|
|
|
|
impl<Message, Renderer> Widget<Message, Renderer> for Radio<Message, Renderer>
|
|
where
|
|
Message: Clone,
|
|
Renderer: text::Renderer,
|
|
Renderer::Theme: StyleSheet + widget::text::StyleSheet,
|
|
{
|
|
fn width(&self) -> Length {
|
|
self.width
|
|
}
|
|
|
|
fn height(&self) -> Length {
|
|
Length::Shrink
|
|
}
|
|
|
|
fn layout(
|
|
&self,
|
|
renderer: &Renderer,
|
|
limits: &layout::Limits,
|
|
) -> layout::Node {
|
|
Row::<(), Renderer>::new()
|
|
.width(self.width)
|
|
.spacing(self.spacing)
|
|
.align_items(Alignment::Center)
|
|
.push(Row::new().width(self.size).height(self.size))
|
|
.push(Text::new(&self.label).width(self.width).size(
|
|
self.text_size.unwrap_or_else(|| renderer.default_size()),
|
|
))
|
|
.layout(renderer, limits)
|
|
}
|
|
|
|
fn on_event(
|
|
&mut self,
|
|
_state: &mut Tree,
|
|
event: Event,
|
|
layout: Layout<'_>,
|
|
cursor_position: Point,
|
|
_renderer: &Renderer,
|
|
_clipboard: &mut dyn Clipboard,
|
|
shell: &mut Shell<'_, Message>,
|
|
) -> event::Status {
|
|
match event {
|
|
Event::Mouse(mouse::Event::ButtonPressed(mouse::Button::Left))
|
|
| Event::Touch(touch::Event::FingerPressed { .. }) => {
|
|
if layout.bounds().contains(cursor_position) {
|
|
shell.publish(self.on_click.clone());
|
|
|
|
return event::Status::Captured;
|
|
}
|
|
}
|
|
_ => {}
|
|
}
|
|
|
|
event::Status::Ignored
|
|
}
|
|
|
|
fn mouse_interaction(
|
|
&self,
|
|
_state: &Tree,
|
|
layout: Layout<'_>,
|
|
cursor_position: Point,
|
|
_viewport: &Rectangle,
|
|
_renderer: &Renderer,
|
|
) -> mouse::Interaction {
|
|
if layout.bounds().contains(cursor_position) {
|
|
mouse::Interaction::Pointer
|
|
} else {
|
|
mouse::Interaction::default()
|
|
}
|
|
}
|
|
|
|
fn draw(
|
|
&self,
|
|
_state: &Tree,
|
|
renderer: &mut Renderer,
|
|
theme: &Renderer::Theme,
|
|
style: &renderer::Style,
|
|
layout: Layout<'_>,
|
|
cursor_position: Point,
|
|
_viewport: &Rectangle,
|
|
) {
|
|
let bounds = layout.bounds();
|
|
let is_mouse_over = bounds.contains(cursor_position);
|
|
|
|
let mut children = layout.children();
|
|
|
|
let custom_style = if is_mouse_over {
|
|
theme.hovered(&self.style, self.is_selected)
|
|
} else {
|
|
theme.active(&self.style, self.is_selected)
|
|
};
|
|
|
|
{
|
|
let layout = children.next().unwrap();
|
|
let bounds = layout.bounds();
|
|
|
|
let size = bounds.width;
|
|
let dot_size = size / 2.0;
|
|
|
|
renderer.fill_quad(
|
|
renderer::Quad {
|
|
bounds,
|
|
border_radius: (size / 2.0).into(),
|
|
border_width: custom_style.border_width,
|
|
border_color: custom_style.border_color,
|
|
},
|
|
custom_style.background,
|
|
);
|
|
|
|
if self.is_selected {
|
|
renderer.fill_quad(
|
|
renderer::Quad {
|
|
bounds: Rectangle {
|
|
x: bounds.x + dot_size / 2.0,
|
|
y: bounds.y + dot_size / 2.0,
|
|
width: bounds.width - dot_size,
|
|
height: bounds.height - dot_size,
|
|
},
|
|
border_radius: (dot_size / 2.0).into(),
|
|
border_width: 0.0,
|
|
border_color: Color::TRANSPARENT,
|
|
},
|
|
custom_style.dot_color,
|
|
);
|
|
}
|
|
}
|
|
|
|
{
|
|
let label_layout = children.next().unwrap();
|
|
|
|
widget::text::draw(
|
|
renderer,
|
|
style,
|
|
label_layout,
|
|
&self.label,
|
|
self.text_size,
|
|
self.font.clone(),
|
|
widget::text::Appearance {
|
|
color: custom_style.text_color,
|
|
},
|
|
alignment::Horizontal::Left,
|
|
alignment::Vertical::Center,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'a, Message, Renderer> From<Radio<Message, Renderer>>
|
|
for Element<'a, Message, Renderer>
|
|
where
|
|
Message: 'a + Clone,
|
|
Renderer: 'a + text::Renderer,
|
|
Renderer::Theme: StyleSheet + widget::text::StyleSheet,
|
|
{
|
|
fn from(radio: Radio<Message, Renderer>) -> Element<'a, Message, Renderer> {
|
|
Element::new(radio)
|
|
}
|
|
}
|