Method scrollvmove

src/elements/scrollable.rs:197–205

(&self, e: &MouseEvent, _: f32)

    }

    fn scrollvmove(&self, e: &MouseEvent, _: f32) {
        let mut state = self.state.borrow_mut();
        if state.drag_v && state.visible_v {
            let _dest =
                (e.y as f32 - state.drag_y).clamp(self.y(), self.bottom() - self.scrollv.h());
            state.percent_v = (_dest - self.y()) / (self.h() - self.scrollv.h());
            self.update_scroll();
        } //drag_v
    }

    //horizontal