diff options
Diffstat (limited to 'native/src/widget/scrollable.rs')
-rw-r--r-- | native/src/widget/scrollable.rs | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/native/src/widget/scrollable.rs b/native/src/widget/scrollable.rs index 3c8e5e5b..75e97027 100644 --- a/native/src/widget/scrollable.rs +++ b/native/src/widget/scrollable.rs @@ -1,7 +1,7 @@ //! Navigate an endless amount of content with a scrollbar. use crate::{ - column, layout, mouse, Align, Clipboard, Column, Element, Event, Hasher, - Layout, Length, Point, Rectangle, Size, Widget, + column, layout, mouse, overlay, Align, Clipboard, Column, Element, Event, + Hasher, Layout, Length, Point, Rectangle, Size, Vector, Widget, }; use std::{f32, hash::Hash, u32}; @@ -113,7 +113,7 @@ impl<'a, Message, Renderer: self::Renderer> Scrollable<'a, Message, Renderer> { impl<'a, Message, Renderer> Widget<Message, Renderer> for Scrollable<'a, Message, Renderer> where - Renderer: self::Renderer + column::Renderer, + Renderer: self::Renderer, { fn width(&self) -> Length { Widget::<Message, Renderer>::width(&self.content) @@ -315,6 +315,24 @@ where self.content.hash_layout(state) } + + fn overlay( + &mut self, + layout: Layout<'_>, + ) -> Option<overlay::Element<'_, Message, Renderer>> { + let Self { content, state, .. } = self; + + content + .overlay(layout.children().next().unwrap()) + .map(|overlay| { + let bounds = layout.bounds(); + let content_layout = layout.children().next().unwrap(); + let content_bounds = content_layout.bounds(); + let offset = state.offset(bounds, content_bounds); + + overlay.translate(Vector::new(0.0, -(offset as f32))) + }) + } } /// The local state of a [`Scrollable`]. @@ -454,7 +472,7 @@ pub struct Scroller { /// /// [`Scrollable`]: struct.Scrollable.html /// [renderer]: ../../renderer/index.html -pub trait Renderer: crate::Renderer + Sized { +pub trait Renderer: column::Renderer + Sized { /// The style supported by this renderer. type Style: Default; @@ -502,7 +520,7 @@ pub trait Renderer: crate::Renderer + Sized { impl<'a, Message, Renderer> From<Scrollable<'a, Message, Renderer>> for Element<'a, Message, Renderer> where - Renderer: 'a + self::Renderer + column::Renderer, + Renderer: 'a + self::Renderer, Message: 'a, { fn from( |