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Implement reactive-rendering for canvas

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Héctor Ramón Jiménez 2024-10-28 16:58:00 +01:00
parent a84b328dcc
commit 920596ed6f
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GPG key ID: 4C07CEC81AFA161F
9 changed files with 243 additions and 141 deletions
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15
widget/src/canvas/program.rs
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@ -1,8 +1,8 @@
use crate::canvas::event::{self, Event};
use crate::canvas::mouse;
use crate::canvas::Geometry;
use crate::canvas::{Event, Geometry};
use crate::core::Rectangle;
use crate::graphics::geometry;
use crate::Action;
/// The state and logic of a [`Canvas`].
///
@ -22,8 +22,9 @@ where
/// When a [`Program`] is used in a [`Canvas`], the runtime will call this
/// method for each [`Event`].
///
/// This method can optionally return a `Message` to notify an application
/// of any meaningful interactions.
/// This method can optionally return an [`Action`] to either notify an
/// application of any meaningful interactions, capture the event, or
/// request a redraw.
///
/// By default, this method does and returns nothing.
///
@ -34,8 +35,8 @@ where
_event: Event,
_bounds: Rectangle,
_cursor: mouse::Cursor,
) -> (event::Status, Option<Message>) {
(event::Status::Ignored, None)
) -> Option<Action<Message>> {
None
}
/// Draws the state of the [`Program`], producing a bunch of [`Geometry`].
@ -84,7 +85,7 @@ where
event: Event,
bounds: Rectangle,
cursor: mouse::Cursor,
) -> (event::Status, Option<Message>) {
) -> Option<Action<Message>> {
T::update(self, state, event, bounds, cursor)
}