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wip: component playground; Align primitive

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🪞👃🪞 2024-09-07 20:54:49 +03:00
parent 4cca03352a
commit 5fc7da3aca
12 changed files with 181 additions and 42 deletions
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4
crates/tek_core/src/engine/component.rs
View file

@ -1,10 +1,10 @@
use crate::*;
/// A UI component.
pub trait Component<E: Engine>: Render<E> + Handle<E> {}
pub trait Component<E: Engine>: Render<E> + Handle<E> + Layout<E> {}
/// Everything that implements [Render] and [Handle] is a [Component].
impl<E: Engine, C: Render<E> + Handle<E>> Component<E> for C {}
impl<E: Engine, C: Render<E> + Handle<E> + Layout<E>> Component<E> for C {}
/// Marker trait for [Component]s that can [Exit]
pub trait ExitableComponent<E>: Exit + Component<E> where E: Engine {

15
crates/tek_core/src/engine/layout.rs
View file

@ -2,19 +2,18 @@ use crate::*;
// TODO: Convert to component
// pub enum Align { Center, NW, N, NE, E, SE, S, SW, W, }
pub fn center_box (area: Rect, w: u16, h: u16) -> Rect {
let width = w.min(area.width * 3 / 5);
let height = h.min(area.width * 3 / 5);
let x = area.x + (area.width - width) / 2;
let y = area.y + (area.height - height) / 2;
Rect { x, y, width, height }
pub fn center_box (area: [u16;4], w: u16, h: u16) -> [u16;4] {
let width = w.min(area.w() * 3 / 5);
let height = h.min(area.w() * 3 / 5);
let x = area.x() + (area.w() - width) / 2;
let y = area.y() + (area.h() - height) / 2;
[x, y, width, height]
}
/// Trait for structs that compute drawing area before rendering
pub trait Layout<E: Engine>: Render<E> {
fn layout (&self, area: E::Area) -> Perhaps<E::Area>;
}
impl<E: Engine, T: Layout<E>> Layout<E> for &T {
fn layout (&self, area: E::Area) -> Perhaps<E::Area> {
(*self).layout(area)
@ -29,6 +28,8 @@ impl<E: Engine, T: Layout<E>> Layout<E> for Option<T> {
}
}
/// Override X and Y coordinates, aligning to corner, side, or center of area
pub enum Align<L> { Center(L), NW(L), N(L), NE(L), W(L), E(L), SW(L), S(L), SE(L) }
/// Enforce minimum size of drawing area
pub enum Min<U: Number, L> { W(U, L), H(U, L), WH(U, U, L), }
/// Enforce maximum size of drawing area