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-rw-r--r--widget/src/pane_grid.rs108
1 files changed, 66 insertions, 42 deletions
diff --git a/widget/src/pane_grid.rs b/widget/src/pane_grid.rs
index beac0bd8..acfa9d44 100644
--- a/widget/src/pane_grid.rs
+++ b/widget/src/pane_grid.rs
@@ -30,6 +30,7 @@ pub use split::Split;
pub use state::State;
pub use title_bar::TitleBar;
+use crate::container;
use crate::core::event::{self, Event};
use crate::core::layout;
use crate::core::mouse;
@@ -39,8 +40,8 @@ use crate::core::touch;
use crate::core::widget;
use crate::core::widget::tree::{self, Tree};
use crate::core::{
- Background, Border, Clipboard, Color, Element, Layout, Length, Pixels,
- Point, Rectangle, Shell, Size, Theme, Vector, Widget,
+ self, Background, Border, Clipboard, Color, Element, Layout, Length,
+ Pixels, Point, Rectangle, Shell, Size, Theme, Vector, Widget,
};
const DRAG_DEADBAND_DISTANCE: f32 = 10.0;
@@ -101,7 +102,8 @@ pub struct PaneGrid<
Theme = crate::Theme,
Renderer = crate::Renderer,
> where
- Renderer: crate::core::Renderer,
+ Theme: Catalog,
+ Renderer: core::Renderer,
{
contents: Contents<'a, Content<'a, Message, Theme, Renderer>>,
width: Length,
@@ -110,12 +112,13 @@ pub struct PaneGrid<
on_click: Option<Box<dyn Fn(Pane) -> Message + 'a>>,
on_drag: Option<Box<dyn Fn(DragEvent) -> Message + 'a>>,
on_resize: Option<(f32, Box<dyn Fn(ResizeEvent) -> Message + 'a>)>,
- style: Style<'a, Theme>,
+ class: <Theme as Catalog>::Class<'a>,
}
impl<'a, Message, Theme, Renderer> PaneGrid<'a, Message, Theme, Renderer>
where
- Renderer: crate::core::Renderer,
+ Theme: Catalog,
+ Renderer: core::Renderer,
{
/// Creates a [`PaneGrid`] with the given [`State`] and view function.
///
@@ -124,10 +127,7 @@ where
pub fn new<T>(
state: &'a State<T>,
view: impl Fn(Pane, &'a T, bool) -> Content<'a, Message, Theme, Renderer>,
- ) -> Self
- where
- Theme: DefaultStyle + 'a,
- {
+ ) -> Self {
let contents = if let Some((pane, pane_state)) =
state.maximized.and_then(|pane| {
state.panes.get(&pane).map(|pane_state| (pane, pane_state))
@@ -158,7 +158,7 @@ where
on_click: None,
on_drag: None,
on_resize: None,
- style: Box::new(Theme::default_style),
+ class: <Theme as Catalog>::default(),
}
}
@@ -218,8 +218,23 @@ where
}
/// Sets the style of the [`PaneGrid`].
- pub fn style(mut self, style: impl Fn(&Theme) -> Appearance + 'a) -> Self {
- self.style = Box::new(style);
+ #[must_use]
+ pub fn style(mut self, style: impl Fn(&Theme) -> 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 [`PaneGrid`].
+ #[cfg(feature = "advanced")]
+ #[must_use]
+ pub fn class(
+ mut self,
+ class: impl Into<<Theme as Catalog>::Class<'a>>,
+ ) -> Self {
+ self.class = class.into();
self
}
@@ -233,7 +248,8 @@ where
impl<'a, Message, Theme, Renderer> Widget<Message, Theme, Renderer>
for PaneGrid<'a, Message, Theme, Renderer>
where
- Renderer: crate::core::Renderer,
+ Theme: Catalog,
+ Renderer: core::Renderer,
{
fn tag(&self) -> tree::Tag {
tree::Tag::of::<state::Action>()
@@ -596,7 +612,7 @@ where
tree: &Tree,
renderer: &mut Renderer,
theme: &Theme,
- style: &renderer::Style,
+ defaults: &renderer::Style,
layout: Layout<'_>,
cursor: mouse::Cursor,
viewport: &Rectangle,
@@ -677,7 +693,7 @@ where
None
};
- let appearance = (self.style)(theme);
+ let style = Catalog::style(theme, &self.class);
for ((id, (content, tree)), pane_layout) in
contents.zip(layout.children())
@@ -692,7 +708,7 @@ where
tree,
renderer,
theme,
- style,
+ defaults,
pane_layout,
pane_cursor,
viewport,
@@ -710,10 +726,10 @@ where
renderer.fill_quad(
renderer::Quad {
bounds,
- border: appearance.hovered_region.border,
+ border: style.hovered_region.border,
..renderer::Quad::default()
},
- appearance.hovered_region.background,
+ style.hovered_region.background,
);
}
}
@@ -723,7 +739,7 @@ where
tree,
renderer,
theme,
- style,
+ defaults,
pane_layout,
pane_cursor,
viewport,
@@ -738,10 +754,10 @@ where
renderer.fill_quad(
renderer::Quad {
bounds,
- border: appearance.hovered_region.border,
+ border: style.hovered_region.border,
..renderer::Quad::default()
},
- appearance.hovered_region.background,
+ style.hovered_region.background,
);
}
@@ -759,7 +775,7 @@ where
tree,
renderer,
theme,
- style,
+ defaults,
layout,
pane_cursor,
viewport,
@@ -772,9 +788,9 @@ where
if picked_pane.is_none() {
if let Some((axis, split_region, is_picked)) = picked_split {
let highlight = if is_picked {
- appearance.picked_split
+ style.picked_split
} else {
- appearance.hovered_split
+ style.hovered_split
};
renderer.fill_quad(
@@ -832,8 +848,8 @@ impl<'a, Message, Theme, Renderer> From<PaneGrid<'a, Message, Theme, Renderer>>
for Element<'a, Message, Theme, Renderer>
where
Message: 'a,
- Theme: 'a,
- Renderer: crate::core::Renderer + 'a,
+ Theme: Catalog + 'a,
+ Renderer: core::Renderer + 'a,
{
fn from(
pane_grid: PaneGrid<'a, Message, Theme, Renderer>,
@@ -1116,7 +1132,7 @@ impl<'a, T> Contents<'a, T> {
/// The appearance of a [`PaneGrid`].
#[derive(Debug, Clone, Copy, PartialEq)]
-pub struct Appearance {
+pub struct Style {
/// The appearance of a hovered region highlight.
pub hovered_region: Highlight,
/// The appearance of a picked split.
@@ -1145,32 +1161,40 @@ pub struct Line {
pub width: f32,
}
-/// The style of a [`PaneGrid`].
-pub type Style<'a, Theme> = Box<dyn Fn(&Theme) -> Appearance + 'a>;
+/// The theme catalog of a [`PaneGrid`].
+pub trait Catalog: container::Catalog {
+ /// The item class of this [`Catalog`].
+ type Class<'a>;
-/// The default style of a [`PaneGrid`].
-pub trait DefaultStyle {
- /// Returns the default style of a [`PaneGrid`].
- fn default_style(&self) -> Appearance;
+ /// The default class produced by this [`Catalog`].
+ fn default<'a>() -> <Self as Catalog>::Class<'a>;
+
+ /// The [`Style`] of a class with the given status.
+ fn style(&self, class: &<Self as Catalog>::Class<'_>) -> Style;
}
-impl DefaultStyle for Theme {
- fn default_style(&self) -> Appearance {
- default(self)
+/// A styling function for a [`PaneGrid`].
+///
+/// This is just a boxed closure: `Fn(&Theme, Status) -> Style`.
+pub type StyleFn<'a, Theme> = Box<dyn Fn(&Theme) -> Style + 'a>;
+
+impl Catalog for Theme {
+ type Class<'a> = StyleFn<'a, Self>;
+
+ fn default<'a>() -> StyleFn<'a, Self> {
+ Box::new(default)
}
-}
-impl DefaultStyle for Appearance {
- fn default_style(&self) -> Appearance {
- *self
+ fn style(&self, class: &StyleFn<'_, Self>) -> Style {
+ class(self)
}
}
/// The default style of a [`PaneGrid`].
-pub fn default(theme: &Theme) -> Appearance {
+pub fn default(theme: &Theme) -> Style {
let palette = theme.extended_palette();
- Appearance {
+ Style {
hovered_region: Highlight {
background: Background::Color(Color {
a: 0.5,
generated by cgit (git 2.34.1) at 2025-04-15 05:25:54 +0000