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author | 2023-03-04 05:37:11 +0100 | |
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committer | 2023-03-04 05:37:11 +0100 | |
commit | 3a0d34c0240f4421737a6a08761f99d6f8140d02 (patch) | |
tree | c9a4a6b8e9c1db1b8fcd05bc98e3f131d5ef4bd5 /native/src/widget/operation/scrollable.rs | |
parent | c54409d1711e1f615c7ea4b02c082954e340632a (diff) | |
download | iced-3a0d34c0240f4421737a6a08761f99d6f8140d02.tar.gz iced-3a0d34c0240f4421737a6a08761f99d6f8140d02.tar.bz2 iced-3a0d34c0240f4421737a6a08761f99d6f8140d02.zip |
Create `iced_widget` subcrate and re-organize the whole codebase
Diffstat (limited to 'native/src/widget/operation/scrollable.rs')
-rw-r--r-- | native/src/widget/operation/scrollable.rs | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/native/src/widget/operation/scrollable.rs b/native/src/widget/operation/scrollable.rs deleted file mode 100644 index 3b20631f..00000000 --- a/native/src/widget/operation/scrollable.rs +++ /dev/null @@ -1,54 +0,0 @@ -//! Operate on widgets that can be scrolled. -use crate::widget::{Id, Operation}; - -/// The internal state of a widget that can be scrolled. -pub trait Scrollable { - /// Snaps the scroll of the widget to the given `percentage` along the horizontal & vertical axis. - fn snap_to(&mut self, offset: RelativeOffset); -} - -/// Produces an [`Operation`] that snaps the widget with the given [`Id`] to -/// the provided `percentage`. -pub fn snap_to<T>(target: Id, offset: RelativeOffset) -> impl Operation<T> { - struct SnapTo { - target: Id, - offset: RelativeOffset, - } - - impl<T> Operation<T> for SnapTo { - fn container( - &mut self, - _id: Option<&Id>, - operate_on_children: &mut dyn FnMut(&mut dyn Operation<T>), - ) { - operate_on_children(self) - } - - fn scrollable(&mut self, state: &mut dyn Scrollable, id: Option<&Id>) { - if Some(&self.target) == id { - state.snap_to(self.offset); - } - } - } - - SnapTo { target, offset } -} - -/// The amount of offset in each direction of a [`Scrollable`]. -/// -/// A value of `0.0` means start, while `1.0` means end. -#[derive(Debug, Clone, Copy, PartialEq, Default)] -pub struct RelativeOffset { - /// The amount of horizontal offset - pub x: f32, - /// The amount of vertical offset - pub y: f32, -} - -impl RelativeOffset { - /// A relative offset that points to the top-left of a [`Scrollable`]. - pub const START: Self = Self { x: 0.0, y: 0.0 }; - - /// A relative offset that points to the bottom-right of a [`Scrollable`]. - pub const END: Self = Self { x: 1.0, y: 1.0 }; -} |