diff options
Diffstat (limited to 'widget/src/pick_list.rs')
| -rw-r--r-- | widget/src/pick_list.rs | 101 |
1 files changed, 63 insertions, 38 deletions
diff --git a/widget/src/pick_list.rs b/widget/src/pick_list.rs index 52d54397..e9c33d3d 100644 --- a/widget/src/pick_list.rs +++ b/widget/src/pick_list.rs @@ -32,6 +32,7 @@ pub struct PickList< T: ToString + PartialEq + Clone, L: Borrow<[T]> + 'a, V: Borrow<T> + 'a, + Theme: Catalog, Renderer: text::Renderer, { on_select: Box<dyn Fn(T) -> Message + 'a>, @@ -47,7 +48,8 @@ pub struct PickList< text_shaping: text::Shaping, font: Option<Renderer::Font>, handle: Handle<Renderer::Font>, - style: Style<'a, Theme>, + class: <Theme as Catalog>::Class<'a>, + menu_class: <Theme as menu::Catalog>::Class<'a>, } impl<'a, T, L, V, Message, Theme, Renderer> @@ -57,6 +59,7 @@ where L: Borrow<[T]> + 'a, V: Borrow<T> + 'a, Message: Clone, + Theme: Catalog, Renderer: text::Renderer, { /// Creates a new [`PickList`] with the given list of options, the current @@ -65,10 +68,7 @@ where options: L, selected: Option<V>, on_select: impl Fn(T) -> Message + 'a, - ) -> Self - where - Theme: DefaultStyle, - { + ) -> Self { Self { on_select: Box::new(on_select), on_open: None, @@ -83,7 +83,8 @@ where text_shaping: text::Shaping::Basic, font: None, handle: Handle::default(), - style: Theme::default_style(), + class: <Theme as Catalog>::default(), + menu_class: <Theme as menu::Catalog>::default(), } } @@ -151,8 +152,23 @@ where } /// Sets the style of the [`PickList`]. - pub fn style(mut self, style: impl Into<Style<'a, Theme>>) -> Self { - self.style = style.into(); + #[must_use] + pub fn style(mut self, style: impl Fn(&Theme, Status) -> Style + 'a) -> Self + where + <Theme as Catalog>::Class<'a>: From<StyleFn<'a, Theme>>, + { + self.class = (Box::new(style) as StyleFn<'a, Theme>).into(); + self + } + + /// Sets the style class of the [`PickList`]. + #[cfg(feature = "advanced")] + #[must_use] + pub fn class( + mut self, + class: impl Into<<Theme as Catalog>::Class<'a>>, + ) -> Self { + self.class = class.into(); self } } @@ -164,6 +180,7 @@ where L: Borrow<[T]>, V: Borrow<T>, Message: Clone + 'a, + Theme: Catalog + 'a, Renderer: text::Renderer + 'a, { fn tag(&self) -> tree::Tag { @@ -409,15 +426,15 @@ where Status::Active }; - let appearance = (self.style.field)(theme, status); + let style = Catalog::style(theme, &self.class, status); renderer.fill_quad( renderer::Quad { bounds, - border: appearance.border, + border: style.border, ..renderer::Quad::default() }, - appearance.background, + style.background, ); let handle = match &self.handle { @@ -478,7 +495,7 @@ where bounds.x + bounds.width - self.padding.right, bounds.center_y(), ), - appearance.handle_color, + style.handle_color, *viewport, ); } @@ -505,9 +522,9 @@ where }, Point::new(bounds.x + self.padding.left, bounds.center_y()), if is_selected { - appearance.text_color + style.text_color } else { - appearance.placeholder_color + style.placeholder_color }, *viewport, ); @@ -539,7 +556,7 @@ where (on_select)(option) }, None, - &self.style.menu, + &self.menu_class, ) .width(bounds.width) .padding(self.padding) @@ -565,7 +582,7 @@ where L: Borrow<[T]> + 'a, V: Borrow<T> + 'a, Message: Clone + 'a, - Theme: 'a, + Theme: Catalog + 'a, Renderer: text::Renderer + 'a, { fn from( @@ -662,7 +679,7 @@ pub enum Status { /// The appearance of a pick list. #[derive(Debug, Clone, Copy)] -pub struct Appearance { +pub struct Style { /// The text [`Color`] of the pick list. pub text_color: Color, /// The placeholder [`Color`] of the pick list. @@ -675,36 +692,44 @@ pub struct Appearance { pub border: Border, } -/// The styles of the different parts of a [`PickList`]. -#[allow(missing_debug_implementations)] -pub struct Style<'a, Theme> { - /// The style of the [`PickList`] itself. - pub field: Box<dyn Fn(&Theme, Status) -> Appearance + 'a>, +/// The theme catalog of a [`PickList`]. +pub trait Catalog: menu::Catalog { + /// The item class of the [`Catalog`]. + type Class<'a>; - /// The style of the [`Menu`] of the pick list. - pub menu: menu::Style<'a, Theme>, -} + /// The default class produced by the [`Catalog`]. + fn default<'a>() -> <Self as Catalog>::Class<'a>; -/// The default style of a [`PickList`]. -pub trait DefaultStyle: Sized { - /// Returns the default style of a [`PickList`]. - fn default_style() -> Style<'static, Self>; + /// The [`Style`] of a class with the given status. + fn style( + &self, + class: &<Self as Catalog>::Class<'_>, + status: Status, + ) -> Style; } -impl DefaultStyle for Theme { - fn default_style() -> Style<'static, Self> { - Style { - field: Box::new(default), - menu: menu::DefaultStyle::default_style(), - } +/// A styling function for a [`PickList`]. +/// +/// 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>() -> StyleFn<'a, Self> { + Box::new(default) + } + + fn style(&self, class: &StyleFn<'_, Self>, status: Status) -> Style { + class(self, status) } } /// The default style of the field of a [`PickList`]. -pub fn default(theme: &Theme, status: Status) -> Appearance { +pub fn default(theme: &Theme, status: Status) -> Style { let palette = theme.extended_palette(); - let active = Appearance { + let active = Style { text_color: palette.background.weak.text, background: palette.background.weak.color.into(), placeholder_color: palette.background.strong.color, @@ -718,7 +743,7 @@ pub fn default(theme: &Theme, status: Status) -> Appearance { match status { Status::Active => active, - Status::Hovered | Status::Opened => Appearance { + Status::Hovered | Status::Opened => Style { border: Border { color: palette.primary.strong.color, ..active.border |