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Introduce viewport to Widget::draw

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This should eventually allow us to only generate primitives that are
visible.
This commit is contained in:
Héctor Ramón Jiménez 2020-08-18 03:37:32 +02:00
parent 8a3ce90959
commit d328b07b39
31 changed files with 123 additions and 35 deletions
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13
native/src/element.rs
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@ -1,6 +1,7 @@
use crate::layout;
use crate::overlay;
use crate::{
layout, overlay, Clipboard, Color, Event, Hasher, Layout, Length, Point,
Widget,
Clipboard, Color, Event, Hasher, Layout, Length, Point, Rectangle, Widget,
};
/// A generic [`Widget`].
@ -260,9 +261,10 @@ where
defaults: &Renderer::Defaults,
layout: Layout<'_>,
cursor_position: Point,
viewport: &Rectangle,
) -> Renderer::Output {
self.widget
.draw(renderer, defaults, layout, cursor_position)
.draw(renderer, defaults, layout, cursor_position, viewport)
}
/// Computes the _layout_ hash of the [`Element`].
@ -356,9 +358,10 @@ where
defaults: &Renderer::Defaults,
layout: Layout<'_>,
cursor_position: Point,
viewport: &Rectangle,
) -> Renderer::Output {
self.widget
.draw(renderer, defaults, layout, cursor_position)
.draw(renderer, defaults, layout, cursor_position, viewport)
}
fn hash_layout(&self, state: &mut Hasher) {
@ -437,12 +440,14 @@ where
defaults: &Renderer::Defaults,
layout: Layout<'_>,
cursor_position: Point,
viewport: &Rectangle,
) -> Renderer::Output {
renderer.explain(
defaults,
self.element.widget.as_ref(),
layout,
cursor_position,
viewport,
self.color,
)
}