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use super::*;
use modifier::*;
///
/// Possible visibilities for the scrollbars
///
#[derive(Clone, PartialEq, Debug, Serialize, Deserialize)]
pub enum ScrollBarVisibility {
Never,
Always,
OnlyIfNeeded
}
///
/// Specifies a fixed axis
///
#[derive(Clone, PartialEq, Debug, Serialize, Deserialize)]
pub enum FixedAxis {
/// Fixed in position along the horizontal axis
Horizontal,
/// Fixed in position along the vertical axis
Vertical,
/// Fixed in position along both axes
Both
}
///
/// Attributes representing the way a control scrolls its content
///
#[derive(Clone, PartialEq, Debug, Serialize, Deserialize)]
pub enum Scroll {
/// The size of the content of this scroll region
///
/// This is a minimum size. If there are items placed outside this region, the scroll
/// region will grow to accomodate them.
///
/// If the control is larger than this size, then the bounds will be set to the
/// overall size of the control.
MinimumContentSize(f32, f32),
/// Specifies the visibility of the horizontal scroll bar
HorizontalScrollBar(ScrollBarVisibility),
/// Specifies the visibility of the vertical scroll bar
VerticalScrollBar(ScrollBarVisibility),
/// Fixes the position of this element relative to its containing scroll region
///
/// It will be laid out as normal but will not move when the region is scrolled
Fix(FixedAxis)
}
impl Modifier<Control> for Scroll {
fn modify(self, control: &mut Control) {
control.add_attribute(ControlAttribute::ScrollAttr(self))
}
}
impl<'a> Modifier<Control> for &'a Scroll {
fn modify(self, control: &mut Control) {
control.add_attribute(ControlAttribute::ScrollAttr(self.clone()))
}
}