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Simplify cursor_to_center in image::Viewer

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This commit is contained in:
Héctor Ramón Jiménez 2020-12-18 11:23:22 +01:00
parent 149098cb68
commit 6a51282933
1 changed files with 2 additions and 21 deletions
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23
native/src/widget/image/viewer.rs
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@ -149,23 +149,6 @@ impl<'a> Viewer<'a> {
}
}
/// Cursor position relative to the [`Viewer`] bounds.
///
/// [`Viewer`]: struct.Viewer.html
fn relative_cursor_position(
absolute_position: Point,
bounds: Rectangle,
) -> Point {
absolute_position - Vector::new(bounds.x, bounds.y)
}
/// Center point relative to the [`Viewer`] bounds.
///
/// [`Viewer`]: struct.Viewer.html
fn relative_center(bounds: Rectangle) -> Point {
bounds.center() - Vector::new(bounds.x, bounds.y)
}
impl<'a, Message, Renderer> Widget<Message, Renderer> for Viewer<'a>
where
Renderer: self::Renderer + image::Renderer,
@ -241,10 +224,8 @@ where
let factor =
self.state.scale / previous_scale - 1.0;
let cursor_to_center = relative_cursor_position(
cursor_position,
bounds,
) - relative_center(bounds);
let cursor_to_center =
cursor_position - bounds.center();
let adjustment = cursor_to_center * factor
+ self.state.current_offset * factor;