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-rw-r--r--widget/src/checkbox.rs101
1 files changed, 59 insertions, 42 deletions
diff --git a/widget/src/checkbox.rs b/widget/src/checkbox.rs
index 15fb8f58..225c316d 100644
--- a/widget/src/checkbox.rs
+++ b/widget/src/checkbox.rs
@@ -39,6 +39,7 @@ pub struct Checkbox<
Renderer = crate::Renderer,
> where
Renderer: text::Renderer,
+ Theme: Catalog,
{
is_checked: bool,
on_toggle: Option<Box<dyn Fn(bool) -> Message + 'a>>,
@@ -51,12 +52,13 @@ pub struct Checkbox<
text_shaping: text::Shaping,
font: Option<Renderer::Font>,
icon: Icon<Renderer::Font>,
- style: Style<'a, Theme>,
+ class: Theme::Class<'a>,
}
impl<'a, Message, Theme, Renderer> Checkbox<'a, Message, Theme, Renderer>
where
Renderer: text::Renderer,
+ Theme: Catalog,
{
/// The default size of a [`Checkbox`].
const DEFAULT_SIZE: f32 = 16.0;
@@ -69,10 +71,7 @@ where
/// It expects:
/// * the label of the [`Checkbox`]
/// * a boolean describing whether the [`Checkbox`] is checked or not
- pub fn new(label: impl Into<String>, is_checked: bool) -> Self
- where
- Theme: DefaultStyle + 'a,
- {
+ pub fn new(label: impl Into<String>, is_checked: bool) -> Self {
Checkbox {
is_checked,
on_toggle: None,
@@ -91,7 +90,7 @@ where
line_height: text::LineHeight::default(),
shaping: text::Shaping::Basic,
},
- style: Box::new(Theme::default_style),
+ class: Theme::default(),
}
}
@@ -174,11 +173,20 @@ where
}
/// Sets the style of the [`Checkbox`].
- pub fn style(
- mut self,
- style: impl Fn(&Theme, Status) -> Appearance + 'a,
- ) -> Self {
- self.style = Box::new(style);
+ #[must_use]
+ pub fn style(mut self, style: impl Fn(&Theme, Status) -> Style + 'a) -> Self
+ where
+ Theme::Class<'a>: From<StyleFn<'a, Theme>>,
+ {
+ self.class = (Box::new(style) as StyleFn<'a, Theme>).into();
+ self
+ }
+
+ /// Sets the style class of the [`Checkbox`].
+ #[cfg(feature = "advanced")]
+ #[must_use]
+ pub fn class(mut self, class: impl Into<Theme::Class<'a>>) -> Self {
+ self.class = class.into();
self
}
}
@@ -187,6 +195,7 @@ impl<'a, Message, Theme, Renderer> Widget<Message, Theme, Renderer>
for Checkbox<'a, Message, Theme, Renderer>
where
Renderer: text::Renderer,
+ Theme: Catalog,
{
fn tag(&self) -> tree::Tag {
tree::Tag::of::<widget::text::State<Renderer::Paragraph>>()
@@ -285,7 +294,7 @@ where
tree: &Tree,
renderer: &mut Renderer,
theme: &Theme,
- style: &renderer::Style,
+ defaults: &renderer::Style,
layout: Layout<'_>,
cursor: mouse::Cursor,
viewport: &Rectangle,
@@ -304,7 +313,7 @@ where
Status::Active { is_checked }
};
- let appearance = (self.style)(theme, status);
+ let style = theme.style(&self.class, status);
{
let layout = children.next().unwrap();
@@ -313,10 +322,10 @@ where
renderer.fill_quad(
renderer::Quad {
bounds,
- border: appearance.border,
+ border: style.border,
..renderer::Quad::default()
},
- appearance.background,
+ style.background,
);
let Icon {
@@ -331,7 +340,7 @@ where
if self.is_checked {
renderer.fill_text(
text::Text {
- content: &code_point.to_string(),
+ content: code_point.to_string(),
font: *font,
size,
line_height: *line_height,
@@ -341,7 +350,7 @@ where
shaping: *shaping,
},
bounds.center(),
- appearance.icon_color,
+ style.icon_color,
*viewport,
);
}
@@ -352,11 +361,11 @@ where
crate::text::draw(
renderer,
- style,
+ defaults,
label_layout,
tree.state.downcast_ref(),
- crate::text::Appearance {
- color: appearance.text_color,
+ crate::text::Style {
+ color: style.text_color,
},
viewport,
);
@@ -368,7 +377,7 @@ impl<'a, Message, Theme, Renderer> From<Checkbox<'a, Message, Theme, Renderer>>
for Element<'a, Message, Theme, Renderer>
where
Message: 'a,
- Theme: 'a,
+ Theme: 'a + Catalog,
Renderer: 'a + text::Renderer,
{
fn from(
@@ -413,9 +422,9 @@ pub enum Status {
},
}
-/// The appearance of a checkbox.
+/// The style of a checkbox.
#[derive(Debug, Clone, Copy)]
-pub struct Appearance {
+pub struct Style {
/// The [`Background`] of the checkbox.
pub background: Background,
/// The icon [`Color`] of the checkbox.
@@ -426,29 +435,37 @@ pub struct Appearance {
pub text_color: Option<Color>,
}
-/// The style of a [`Checkbox`].
-pub type Style<'a, Theme> = Box<dyn Fn(&Theme, Status) -> Appearance + 'a>;
+/// The theme catalog of a [`Checkbox`].
+pub trait Catalog: Sized {
+ /// The item class of the [`Catalog`].
+ type Class<'a>;
-/// The default style of a [`Checkbox`].
-pub trait DefaultStyle {
- /// Returns the default style of a [`Checkbox`].
- fn default_style(&self, status: Status) -> Appearance;
+ /// The default class produced by the [`Catalog`].
+ fn default<'a>() -> Self::Class<'a>;
+
+ /// The [`Style`] of a class with the given status.
+ fn style(&self, class: &Self::Class<'_>, status: Status) -> Style;
}
-impl DefaultStyle for Theme {
- fn default_style(&self, status: Status) -> Appearance {
- primary(self, status)
+/// A styling function for a [`Checkbox`].
+///
+/// This is just a boxed closure: `Fn(&Theme, Status) -> Style`.
+pub type StyleFn<'a, Theme> = Box<dyn Fn(&Theme, Status) -> Style + 'a>;
+
+impl Catalog for Theme {
+ type Class<'a> = StyleFn<'a, Self>;
+
+ fn default<'a>() -> Self::Class<'a> {
+ Box::new(primary)
}
-}
-impl DefaultStyle for Appearance {
- fn default_style(&self, _status: Status) -> Appearance {
- *self
+ fn style(&self, class: &Self::Class<'_>, status: Status) -> Style {
+ class(self, status)
}
}
/// A primary checkbox; denoting a main toggle.
-pub fn primary(theme: &Theme, status: Status) -> Appearance {
+pub fn primary(theme: &Theme, status: Status) -> Style {
let palette = theme.extended_palette();
match status {
@@ -474,7 +491,7 @@ pub fn primary(theme: &Theme, status: Status) -> Appearance {
}
/// A secondary checkbox; denoting a complementary toggle.
-pub fn secondary(theme: &Theme, status: Status) -> Appearance {
+pub fn secondary(theme: &Theme, status: Status) -> Style {
let palette = theme.extended_palette();
match status {
@@ -500,7 +517,7 @@ pub fn secondary(theme: &Theme, status: Status) -> Appearance {
}
/// A success checkbox; denoting a positive toggle.
-pub fn success(theme: &Theme, status: Status) -> Appearance {
+pub fn success(theme: &Theme, status: Status) -> Style {
let palette = theme.extended_palette();
match status {
@@ -526,7 +543,7 @@ pub fn success(theme: &Theme, status: Status) -> Appearance {
}
/// A danger checkbox; denoting a negaive toggle.
-pub fn danger(theme: &Theme, status: Status) -> Appearance {
+pub fn danger(theme: &Theme, status: Status) -> Style {
let palette = theme.extended_palette();
match status {
@@ -556,8 +573,8 @@ fn styled(
base: palette::Pair,
accent: palette::Pair,
is_checked: bool,
-) -> Appearance {
- Appearance {
+) -> Style {
+ Style {
background: Background::Color(if is_checked {
accent.color
} else {
generated by cgit (git 2.34.1) at 2025-04-15 20:51:47 +0000