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Add Renderer and Primitive concepts

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This commit is contained in:
Héctor Ramón Jiménez 2019-10-05 03:56:18 +02:00
parent 5204cc8c8b
commit a7d1194403
15 changed files with 227 additions and 126 deletions
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17
native/src/widget.rs
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@ -20,13 +20,12 @@
//!
//! [`Widget`]: trait.Widget.html
//! [renderer]: ../renderer/index.html
mod column;
mod row;
pub mod button;
pub mod checkbox;
pub mod column;
pub mod image;
pub mod radio;
pub mod row;
pub mod slider;
pub mod text;
@ -47,7 +46,7 @@ pub use slider::Slider;
#[doc(no_inline)]
pub use text::Text;
use crate::{Event, Hasher, Layout, MouseCursor, Node, Point};
use crate::{Event, Hasher, Layout, Node, Point};
/// A component that displays information and allows interaction.
///
@ -56,7 +55,10 @@ use crate::{Event, Hasher, Layout, MouseCursor, Node, Point};
///
/// [`Widget`]: trait.Widget.html
/// [`Element`]: ../struct.Element.html
pub trait Widget<Message, Renderer>: std::fmt::Debug {
pub trait Widget<Message, Renderer>: std::fmt::Debug
where
Renderer: crate::Renderer,
{
/// Returns the [`Node`] of the [`Widget`].
///
/// This [`Node`] is used by the runtime to compute the [`Layout`] of the
@ -69,16 +71,13 @@ pub trait Widget<Message, Renderer>: std::fmt::Debug {
/// Draws the [`Widget`] using the associated `Renderer`.
///
/// It must return the [`MouseCursor`] state for the [`Widget`].
///
/// [`Widget`]: trait.Widget.html
/// [`MouseCursor`]: ../enum.MouseCursor.html
fn draw(
&self,
renderer: &mut Renderer,
layout: Layout<'_>,
cursor_position: Point,
) -> MouseCursor;
) -> Renderer::Primitive;
/// Computes the _layout_ hash of the [`Widget`].
///