Struct ScrollTarget 

pub struct ScrollTarget {
    pub rect: Rect,
    pub callback: Arc<dyn Fn(f32, f32) + Send + Sync>,
}

A scrollable viewport region registered during painting.

ScrollView::paint registers one per live scroll region. The event router dispatches InputEvent::Scroll to the target whose rect contains the cursor. The callback receives (delta_x, delta_y) in logical pixels (positive = content scrolls right / down).

Fields

rect: Rect

callback: Arc<dyn Fn(f32, f32) + Send + Sync>