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use XY;
use vec::Vec2;
use view::{SizeConstraint, View, ViewWrapper};
pub struct BoxView<T: View> {
size: XY<SizeConstraint>,
squishable: bool,
view: T,
}
impl<T: View> BoxView<T> {
pub fn new(width: SizeConstraint, height: SizeConstraint, view: T)
-> Self {
BoxView {
size: (width, height).into(),
squishable: false,
view: view,
}
}
pub fn squishable(mut self) -> Self {
self.squishable = true;
self
}
pub fn with_fixed_size<S: Into<Vec2>>(size: S, view: T) -> Self {
let size = size.into();
BoxView::new(SizeConstraint::Fixed(size.x),
SizeConstraint::Fixed(size.y),
view)
}
pub fn with_fixed_width(width: usize, view: T) -> Self {
BoxView::new(SizeConstraint::Fixed(width), SizeConstraint::Free, view)
}
pub fn with_fixed_height(height: usize, view: T) -> Self {
BoxView::new(SizeConstraint::Free, SizeConstraint::Fixed(height), view)
}
pub fn with_full_screen(view: T) -> Self {
BoxView::new(SizeConstraint::Full, SizeConstraint::Full, view)
}
pub fn with_full_width(view: T) -> Self {
BoxView::new(SizeConstraint::Full, SizeConstraint::Free, view)
}
pub fn with_full_height(view: T) -> Self {
BoxView::new(SizeConstraint::Free, SizeConstraint::Full, view)
}
pub fn with_max_size<S: Into<Vec2>>(size: S, view: T) -> Self {
let size = size.into();
BoxView::new(SizeConstraint::AtMost(size.x),
SizeConstraint::AtMost(size.y),
view)
}
pub fn with_max_width(max_width: usize, view: T) -> Self {
BoxView::new(SizeConstraint::AtMost(max_width),
SizeConstraint::Free,
view)
}
pub fn with_max_height(max_height: usize, view: T) -> Self {
BoxView::new(SizeConstraint::Free,
SizeConstraint::AtMost(max_height),
view)
}
pub fn with_min_size<S: Into<Vec2>>(size: S, view: T) -> Self {
let size = size.into();
BoxView::new(SizeConstraint::AtLeast(size.x),
SizeConstraint::AtLeast(size.y),
view)
}
pub fn with_min_width(min_width: usize, view: T) -> Self {
BoxView::new(SizeConstraint::AtLeast(min_width),
SizeConstraint::Free,
view)
}
pub fn with_min_height(min_height: usize, view: T) -> Self {
BoxView::new(SizeConstraint::Free,
SizeConstraint::AtLeast(min_height),
view)
}
}
impl<T: View> ViewWrapper for BoxView<T> {
wrap_impl!(self.view: T);
fn wrap_required_size(&mut self, req: Vec2) -> Vec2 {
let req = self.size.zip_map(req, SizeConstraint::available);
let child_size = self.view.required_size(req);
let result = self.size
.zip_map(child_size.zip(req), SizeConstraint::result);
if self.squishable {
let respect_req = result.zip_map(req, |res, req| res <= req);
result.zip_map(respect_req.zip(child_size),
|res, (respect, child)| {
if respect {
res
} else {
child
}
})
} else {
result
}
}
}
#[cfg(test)]
mod tests {
use vec::Vec2;
use view::{Boxable, View};
use views::DummyView;
#[test]
fn min_size() {
let mut min_w = DummyView.full_screen().min_width(5);
assert_eq!(Vec2::new(5, 1), min_w.required_size(Vec2::new(1, 1)));
assert_eq!(Vec2::new(5, 10), min_w.required_size(Vec2::new(1, 10)));
assert_eq!(Vec2::new(10, 1), min_w.required_size(Vec2::new(10, 1)));
assert_eq!(Vec2::new(10, 10), min_w.required_size(Vec2::new(10, 10)));
let mut min_h = DummyView.full_screen().min_height(5);
assert_eq!(Vec2::new(1, 5), min_h.required_size(Vec2::new(1, 1)));
assert_eq!(Vec2::new(1, 10), min_h.required_size(Vec2::new(1, 10)));
assert_eq!(Vec2::new(10, 5), min_h.required_size(Vec2::new(10, 1)));
assert_eq!(Vec2::new(10, 10), min_h.required_size(Vec2::new(10, 10)));
let mut min_s = DummyView.full_screen().min_size((5, 5));
assert_eq!(Vec2::new(5, 5), min_s.required_size(Vec2::new(1, 1)));
assert_eq!(Vec2::new(5, 10), min_s.required_size(Vec2::new(1, 10)));
assert_eq!(Vec2::new(10, 5), min_s.required_size(Vec2::new(10, 1)));
assert_eq!(Vec2::new(10, 10), min_s.required_size(Vec2::new(10, 10)));
}
#[test]
fn max_size() {
let mut max_w = DummyView.full_screen().max_width(5);
assert_eq!(Vec2::new(1, 1), max_w.required_size(Vec2::new(1, 1)));
assert_eq!(Vec2::new(1, 10), max_w.required_size(Vec2::new(1, 10)));
assert_eq!(Vec2::new(5, 1), max_w.required_size(Vec2::new(10, 1)));
assert_eq!(Vec2::new(5, 10), max_w.required_size(Vec2::new(10, 10)));
let mut max_h = DummyView.full_screen().max_height(5);
assert_eq!(Vec2::new(1, 1), max_h.required_size(Vec2::new(1, 1)));
assert_eq!(Vec2::new(1, 5), max_h.required_size(Vec2::new(1, 10)));
assert_eq!(Vec2::new(10, 1), max_h.required_size(Vec2::new(10, 1)));
assert_eq!(Vec2::new(10, 5), max_h.required_size(Vec2::new(10, 10)));
let mut max_s = DummyView.full_screen().max_size((5, 5));
assert_eq!(Vec2::new(1, 1), max_s.required_size(Vec2::new(1, 1)));
assert_eq!(Vec2::new(1, 5), max_s.required_size(Vec2::new(1, 10)));
assert_eq!(Vec2::new(5, 1), max_s.required_size(Vec2::new(10, 1)));
assert_eq!(Vec2::new(5, 5), max_s.required_size(Vec2::new(10, 10)));
}
#[test]
fn full_screen() {
let mut full = DummyView.full_screen();
assert_eq!(Vec2::new(1, 1), full.required_size(Vec2::new(1, 1)));
assert_eq!(Vec2::new(1, 10), full.required_size(Vec2::new(1, 10)));
assert_eq!(Vec2::new(10, 1), full.required_size(Vec2::new(10, 1)));
assert_eq!(Vec2::new(10, 10), full.required_size(Vec2::new(10, 10)));
}
}