fix: impl Layout for Measure

.editorconfig

@@ -0,0 +1,3 @@
+root = true
+[*]
+max_line_length = 132

core/src/lib.rs

@@ -35,3 +35,11 @@ pub trait Eval<Args, RetVal> {
         }
     };
 }
+
+pub fn wrap_inc (index: usize, count: usize) -> usize {
+    if count > 0 { (index + 1) % count } else { 0 }
+}
+
+pub fn wrap_dec (index: usize, count: usize) -> usize {
+    if count > 0 { index.overflowing_sub(1).0.min(count.saturating_sub(1)) } else { 0 }
+}

output/src/content.rs

@@ -11,6 +11,7 @@ impl<O: Out> Draw<O> for fn(&mut O) { fn draw (&self, to: &mut O) { (*self)(to)
 impl<O: Out> Draw<O> for Box<dyn Draw<O>> { fn draw (&self, to: &mut O) { (**self).draw(to) } }
 impl<O: Out, D: Draw<O>> Draw<O> for &D { fn draw (&self, to: &mut O) { (*self).draw(to) } }
 impl<O: Out, D: Draw<O>> Draw<O> for &mut D { fn draw (&self, to: &mut O) { (**self).draw(to) } }
+impl<O: Out, D: Draw<O>> Draw<O> for Option<D> { fn draw (&self, to: &mut O) { if let Some(draw) = self { draw.draw(to) } } }
 /// Drawable area of display.
 pub trait Layout<O: Out> {
     fn x (&self, to: O::Area) -> O::Unit { to.x() }

output/src/space/space_measure.rs

@@ -2,28 +2,30 @@ use crate::*;
 
 /// A widget that tracks its render width and height
 #[derive(Default)]
-pub struct Measure<E: Out> {
+pub struct Measure<O: Out> {
-    _engine: PhantomData<E>,
+    _engine: PhantomData<O>,
     pub x: Arc<AtomicUsize>,
     pub y: Arc<AtomicUsize>,
 }
 
-impl<E: Out> PartialEq for Measure<E> {
+impl<O: Out> PartialEq for Measure<O> {
     fn eq (&self, other: &Self) -> bool {
         self.x.load(Relaxed) == other.x.load(Relaxed) &&
             self.y.load(Relaxed) == other.y.load(Relaxed)
     }
 }
 
+impl<O: Out> Layout<O> for Measure<O> {}
+
 // TODO: 🡘  🡙 ←🡙→ indicator to expand window when too small
-impl<E: Out> Draw<E> for Measure<E> {
+impl<O: Out> Draw<O> for Measure<O> {
-    fn draw (&self, to: &mut E) {
+    fn draw (&self, to: &mut O) {
         self.x.store(to.area().w().into(), Relaxed);
         self.y.store(to.area().h().into(), Relaxed);
     }
 }
 
-impl<E: Out> Clone for Measure<E> {
+impl<O: Out> Clone for Measure<O> {
     fn clone (&self) -> Self {
         Self {
             _engine: Default::default(),
@@ -33,7 +35,7 @@ impl<E: Out> Clone for Measure<E> {
     }
 }
 
-impl<E: Out> std::fmt::Debug for Measure<E> {
+impl<O: Out> std::fmt::Debug for Measure<O> {
     fn fmt (&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
         f.debug_struct("Measure")
             .field("width",  &self.x)
@@ -42,7 +44,7 @@ impl<E: Out> std::fmt::Debug for Measure<E> {
     }
 }
 
-impl<E: Out> Measure<E> {
+impl<O: Out> Measure<O> {
     pub fn new () -> Self {
         Self {
             _engine: PhantomData::default(),
@@ -75,7 +77,7 @@ impl<E: Out> Measure<E> {
     pub fn format (&self) -> Arc<str> {
         format!("{}x{}", self.w(), self.h()).into()
     }
-    pub fn of <T: Draw<E>> (&self, item: T) -> Bsp<Fill<&Self>, T> {
+    pub fn of <T: Draw<O>> (&self, item: T) -> Bsp<Fill<&Self>, T> {
         Bsp::b(Fill::XY(self), item)
     }
 }

proc/src/lib.rs

@@ -106,7 +106,7 @@ pub(crate) fn write_quote_to (out: &mut TokenStream2, quote: TokenStream2) {
         //#[tengri_proc::view(SomeOut)]
         //impl SomeView {
             //#[tengri::view(":view-1")]
-            //fn view_1 (&self) -> impl Draw<SomeOut> + use<'_> {
+            //fn view_1 (&self) -> impl Content<SomeOut> + use<'_> {
                 //"view-1"
             //}
         //}
@@ -114,13 +114,13 @@ pub(crate) fn write_quote_to (out: &mut TokenStream2, quote: TokenStream2) {
     //let written = quote! { #parsed };
     //assert_eq!(format!("{written}"), format!("{}", quote! {
         //impl SomeView {
-            //fn view_1 (&self) -> impl Draw<SomeOut> + use<'_> {
+            //fn view_1 (&self) -> impl Content<SomeOut> + use<'_> {
                 //"view-1"
             //}
         //}
         ///// Generated by [tengri_proc].
         //impl ::tengri::output::Content<SomeOut> for SomeView {
-            //fn content (&self) -> impl Draw<SomeOut> {
+            //fn content (&self) -> impl Content<SomeOut> {
                 //self.size.of(::tengri::output::View(self, self.config.view))
             //}
         //}

tui/examples/tui_01.rs

@@ -12,25 +12,25 @@ fn main () {}
 
 //#[tengri_proc::view(TuiOut)]
 //impl Example {
-    //pub fn title (&self) -> impl Draw<TuiOut> + use<'_> {
+    //pub fn title (&self) -> impl Content<TuiOut> + use<'_> {
         //Tui::bg(Color::Rgb(60,  10, 10), Push::y(1, Align::n(format!("Example {}/{}:", self.0 + 1, VIEWS.len())))).boxed()
     //}
-    //pub fn code (&self) -> impl Draw<TuiOut> + use<'_> {
+    //pub fn code (&self) -> impl Content<TuiOut> + use<'_> {
         //Tui::bg(Color::Rgb(10,  60, 10), Push::y(2, Align::n(format!("{}", VIEWS[self.0])))).boxed()
     //}
-    //pub fn hello (&self) -> impl Draw<TuiOut> + use<'_> {
+    //pub fn hello (&self) -> impl Content<TuiOut> + use<'_> {
         //Tui::bg(Color::Rgb(10, 100, 10), "Hello").boxed()
     //}
-    //pub fn world (&self) -> impl Draw<TuiOut> + use<'_> {
+    //pub fn world (&self) -> impl Content<TuiOut> + use<'_> {
         //Tui::bg(Color::Rgb(100, 10, 10), "world").boxed()
     //}
-    //pub fn hello_world (&self) -> impl Draw<TuiOut> + use<'_> {
+    //pub fn hello_world (&self) -> impl Content<TuiOut> + use<'_> {
         //"Hello world!".boxed()
     //}
-    //pub fn map_e (&self) -> impl Draw<TuiOut> + use<'_> {
+    //pub fn map_e (&self) -> impl Content<TuiOut> + use<'_> {
         //Map::east(5u16, ||0..5u16, |n, _i|format!("{n}")).boxed()
     //}
-    //pub fn map_s (&self) -> impl Draw<TuiOut> + use<'_> {
+    //pub fn map_s (&self) -> impl Content<TuiOut> + use<'_> {
         //Map::south(5u16, ||0..5u16, |n, _i|format!("{n}")).boxed()
     //}
 //}

tui/src/tui_content.rs

@@ -18,31 +18,31 @@ mod tui_scroll; pub use self::tui_scroll::*;
 mod tui_string; pub use self::tui_string::*;
 mod tui_number;   //pub use self::tui_number::*;
 mod tui_tryptich; //pub use self::tui_tryptich::*;
+impl<T: Content<TuiOut>> Draw<TuiOut> for Foreground<Color, T> {
+    fn draw (&self, to: &mut TuiOut) {
+        let area = self.layout(to.area());
+        to.fill_fg(area, self.0);
+        to.place_at(area, &self.1);
+    }
+}
+impl<T: Content<TuiOut>> Draw<TuiOut> for Background<Color, T> {
+    fn draw (&self, to: &mut TuiOut) {
+        let area = self.layout(to.area());
+        to.fill_bg(area, self.0);
+        to.place_at(area, &self.1);
+    }
+}
 pub struct Modify<T>(pub bool, pub Modifier, pub T);
-pub struct Styled<T>(pub Option<Style>, pub T);
+impl<T: Content<TuiOut>> Layout<TuiOut> for Modify<T> {}
-impl<T: Draw<TuiOut>> Draw<TuiOut> for Foreground<Color, T> {
+impl<T: Content<TuiOut>> Draw<TuiOut> for Modify<T> {
-    fn draw (&self, to: &mut TuiOut) {
-        let area = self.layout(to.area());
-        to.fill_fg(area, self.0.0);
-        to.place_at(area, &self.0.1);
-    }
-}
-impl<T: Draw<TuiOut>> Draw<TuiOut> for Background<Color, T> {
-    fn draw (&self, to: &mut TuiOut) {
-        let area = self.layout(to.area());
-        to.fill_bg(area, self.0.0);
-        to.place_at(area, &self.0.1);
-    }
-}
-impl<T: Draw<TuiOut>> Layout<TuiOut> for Modify<T> {}
-impl<T: Draw<TuiOut>> Draw<TuiOut> for Modify<T> {
     fn draw (&self, to: &mut TuiOut) {
         to.fill_mod(to.area(), self.0, self.1);
         self.2.draw(to)
     }
 }
-impl<T: Draw<TuiOut>> Layout<TuiOut> for Styled<T> {}
+pub struct Styled<T>(pub Option<Style>, pub T);
-impl<T: Draw<TuiOut>> Draw<TuiOut> for Styled<T> {
+impl<T: Content<TuiOut>> Layout<TuiOut> for Styled<T> {}
+impl<T: Content<TuiOut>> Draw<TuiOut> for Styled<T> {
     fn draw (&self, to: &mut TuiOut) {
         to.place(&self.1);
         // TODO write style over area

tui/src/tui_content/tui_border.rs

@@ -8,8 +8,8 @@ impl<S: BorderStyle, W: Content<TuiOut>> HasContent<TuiOut> for Bordered<S, W> {
 
 impl<S: BorderStyle> Draw<TuiOut> for Border<S> {
     fn draw (&self, to: &mut TuiOut) {
-        let Border(enabled, style) = self.0;
+        let Border(enabled, style) = self;
-        if enabled {
+        if *enabled {
             let area = to.area();
             if area.w() > 0 && area.y() > 0 {
                 to.blit(&style.border_nw(), area.x(), area.y(), style.style());
@@ -31,13 +31,13 @@ impl<S: BorderStyle> Draw<TuiOut> for Border<S> {
 
 pub trait BorderStyle: Content<TuiOut> + Copy {
     fn enabled (&self) -> bool;
-    fn enclose (self, w: impl Draw<TuiOut>) -> impl Draw<TuiOut> {
+    fn enclose (self, w: impl Content<TuiOut>) -> impl Content<TuiOut> {
         Bsp::b(Fill::XY(Border(self.enabled(), self)), w)
     }
-    fn enclose2 (self, w: impl Draw<TuiOut>) -> impl Draw<TuiOut> {
+    fn enclose2 (self, w: impl Content<TuiOut>) -> impl Content<TuiOut> {
         Bsp::b(Pad::XY(1, 1, Fill::XY(Border(self.enabled(), self))), w)
     }
-    fn enclose_bg  (self, w: impl Draw<TuiOut>) -> impl Draw<TuiOut> {
+    fn enclose_bg (self, w: impl Content<TuiOut>) -> impl Content<TuiOut> {
         Tui::bg(self.style().unwrap().bg.unwrap_or(Color::Reset),
             Bsp::b(Fill::XY(Border(self.enabled(), self)), w))
     }
@@ -141,6 +141,7 @@ macro_rules! border {
             fn enabled (&self) -> bool { self.0 }
         }
         #[derive(Copy, Clone)] pub struct $T(pub bool, pub Style);
+        impl Layout<TuiOut> for $T {}
         impl Draw<TuiOut> for $T {
             fn draw (&self, to: &mut TuiOut) {
                 if self.enabled() { let _ = BorderStyle::draw(self, to); }

tui/src/tui_content/tui_button.rs

@@ -1,38 +1,18 @@
 use crate::{*, Color::*};
 
-pub fn button_2 <'a> (
+pub fn button_2 <'a> (key: impl Content<TuiOut>, label: impl Content<TuiOut>, editing: bool) -> impl Content<TuiOut> {
-    key:     impl Draw<TuiOut> + 'a,
+    Tui::bold(true, Bsp::e(
-    label:   impl Draw<TuiOut> + 'a,
+        Tui::fg_bg(Tui::orange(), Tui::g(0), Bsp::e(Tui::fg(Tui::g(0), &"▐"), Bsp::e(key, Tui::fg(Tui::g(96), &"▐")))),
-    editing: bool,
+        When::new(!editing, Tui::fg_bg(Tui::g(255), Tui::g(96), label))))
-) -> impl Draw<TuiOut> + 'a {
-    let key = Tui::fg_bg(Tui::orange(), Tui::g(0), Bsp::e(
-        Tui::fg(Tui::g(0), &"▐"),
-        Bsp::e(key, Tui::fg(Tui::g(96), &"▐"))
-    ));
-    let label = When::new(!editing, Tui::fg_bg(Tui::g(255), Tui::g(96), label));
-    Tui::bold(true, Bsp::e(key, label))
 }
 
 pub fn button_3 <'a> (
-    key:     impl Draw<TuiOut> + 'a,
+    key: impl Content<TuiOut>, label: impl Content<TuiOut>, value: impl Content<TuiOut>, editing: bool,
-    label:   impl Draw<TuiOut> + 'a,
+) -> impl Content<TuiOut> {
-    value:   impl Draw<TuiOut> + 'a,
+    Tui::bold(true, Bsp::e(
-    editing: bool,
+        Tui::fg_bg(Tui::orange(), Tui::g(0),
-) -> impl Draw<TuiOut> + 'a {
+            Bsp::e(Tui::fg(Tui::g(0), &"▐"), Bsp::e(key, Tui::fg(if editing { Tui::g(128) } else { Tui::g(96) }, "▐")))),
-    let key = Tui::fg_bg(Tui::orange(), Tui::g(0),
-        Bsp::e(Tui::fg(Tui::g(0), &"▐"), Bsp::e(key, Tui::fg(if editing {
-            Tui::g(128)
-        } else {
-            Tui::g(96)
-        }, "▐"))));
-    let label = Bsp::e(
-        When::new(!editing, Bsp::e(
-            Tui::fg_bg(Tui::g(255), Tui::g(96), label),
-            Tui::fg_bg(Tui::g(128), Tui::g(96), &"▐"),
-        )),
         Bsp::e(
-            Tui::fg_bg(Tui::g(224), Tui::g(128), value),
+            When::new(!editing, Bsp::e(Tui::fg_bg(Tui::g(255), Tui::g(96), label), Tui::fg_bg(Tui::g(128), Tui::g(96), &"▐"),)),
-            Tui::fg_bg(Tui::g(128), Reset, &"▌"),
+            Bsp::e(Tui::fg_bg(Tui::g(224), Tui::g(128), value), Tui::fg_bg(Tui::g(128), Reset, &"▌"), ))))
-        ));
-    Tui::bold(true, Bsp::e(key, label))
 }

tui/src/tui_content/tui_phat.rs

@@ -13,20 +13,16 @@ impl<T> Phat<T> {
     pub const LO: &'static str = "▄";
     pub const HI: &'static str = "▀";
     /// A phat line
-    pub fn lo (fg: Color, bg: Color) -> impl Content<TuiOut> {
+    pub fn lo (fg: Color, bg: Color) -> impl Content<TuiOut> { Fixed::Y(1, Tui::fg_bg(fg, bg, RepeatH(Self::LO))) }
-        Fixed::Y(1, Tui::fg_bg(fg, bg, RepeatH(Self::LO)))
-    }
     /// A phat line
-    pub fn hi (fg: Color, bg: Color) -> impl Content<TuiOut> {
+    pub fn hi (fg: Color, bg: Color) -> impl Content<TuiOut> { Fixed::Y(1, Tui::fg_bg(fg, bg, RepeatH(Self::HI))) }
-        Fixed::Y(1, Tui::fg_bg(fg, bg, RepeatH(Self::HI)))
-    }
 }
 
 impl<T: Content<TuiOut>> HasContent<TuiOut> for Phat<T> {
     fn content (&self) -> impl Content<TuiOut> {
         let [fg, bg, hi, lo] = self.colors;
-        let top = Fixed::y(1, Self::lo(bg, hi));
+        let top = Fixed::Y(1, Self::lo(bg, hi));
-        let low = Fixed::y(1, Self::hi(bg, lo));
+        let low = Fixed::Y(1, Self::hi(bg, lo));
         let content = Tui::fg_bg(fg, bg, &self.content);
         Min::XY(self.width, self.height, Bsp::s(top, Bsp::n(low, Fill::XY(content))))
     }

tui/src/tui_content/tui_repeat.rs

@@ -18,6 +18,7 @@ impl Draw<TuiOut> for Repeat<'_> {
 }
 
 pub struct RepeatV<'a>(pub &'a str);
+impl Layout<TuiOut> for RepeatV<'_> {}
 impl Draw<TuiOut> for RepeatV<'_> {
     fn draw (&self, to: &mut TuiOut) {
         let [x, y, _w, h] = to.area().xywh();
@@ -30,6 +31,7 @@ impl Draw<TuiOut> for RepeatV<'_> {
 }
 
 pub struct RepeatH<'a>(pub &'a str);
+impl Layout<TuiOut> for RepeatH<'_> {}
 impl Draw<TuiOut> for RepeatH<'_> {
     fn draw (&self, to: &mut TuiOut) {
         let [x, y, w, _h] = to.area().xywh();

tui/src/tui_content/tui_string.rs

@@ -1,10 +1,12 @@
 use crate::*;
 use crate::ratatui::prelude::Position;
 use unicode_width::{UnicodeWidthStr, UnicodeWidthChar};
-impl Layout<TuiOut> for &str   { fn layout (&self, to: [u16;4]) -> [u16;4] { to.center_xy([width_chars_max(to.w(), self), 1]) } }
+impl Layout<TuiOut> for &str { fn layout (&self, to: [u16;4]) -> [u16;4] { to.center_xy([width_chars_max(to.w(), self), 1]) } }
-impl Draw<TuiOut>   for &str   { fn draw (&self, to: &mut TuiOut) { let [x, y, w, ..] = self.layout(to.area()); to.text(&self, x, y, w) } }
+impl Draw<TuiOut>   for &str { fn draw (&self, to: &mut TuiOut) { let [x, y, w, ..] = self.layout(to.area()); to.text(&self, x, y, w) } }
 impl Layout<TuiOut> for String { fn layout (&self, to: [u16;4]) -> [u16;4] { self.as_str().layout(to) } }
 impl Draw<TuiOut>   for String { fn draw (&self, to: &mut TuiOut) { self.as_str().draw(to) } }
+impl Layout<TuiOut> for Arc<str> { fn layout (&self, to: [u16;4]) -> [u16;4] { self.as_ref().layout(to) } }
+impl Draw<TuiOut>   for Arc<str> { fn draw (&self, to: &mut TuiOut) { self.as_ref().draw(to) } }
 
 fn width_chars_max (max: u16, text: impl AsRef<str>) -> u16 {
     let mut width: u16 = 0;

tui/src/tui_content/tui_tryptich.rs

@@ -7,20 +7,20 @@ impl<
 > HasContent<TuiOut> for Tryptich<A, B, C> {
     fn content (&self) -> impl Content<TuiOut> {
         let Self { top, h, left: (w_a, ref a), middle: (w_b, ref b), right: (w_c, ref c) } = *self;
-        Fixed::y(h, if top {
+        Fixed::Y(h, if top {
             Bsp::a(
-                Fill::x(Align::n(Fixed::x(w_b, Align::x(Tui::bg(Color::Reset, b))))),
+                Fill::X(Align::n(Fixed::X(w_b, Align::x(Tui::bg(Color::Reset, b))))),
                 Bsp::a(
-                    Fill::x(Align::nw(Fixed::x(w_a, Tui::bg(Color::Reset, a)))),
+                    Fill::X(Align::nw(Fixed::X(w_a, Tui::bg(Color::Reset, a)))),
-                    Fill::x(Align::ne(Fixed::x(w_c, Tui::bg(Color::Reset, c)))),
+                    Fill::X(Align::ne(Fixed::X(w_c, Tui::bg(Color::Reset, c)))),
                 ),
             )
         } else {
             Bsp::a(
-                Fill::XY(Align::c(Fixed::x(w_b, Align::x(Tui::bg(Color::Reset, b))))),
+                Fill::XY(Align::c(Fixed::X(w_b, Align::x(Tui::bg(Color::Reset, b))))),
                 Bsp::a(
-                    Fill::XY(Align::w(Fixed::x(w_a, Tui::bg(Color::Reset, a)))),
+                    Fill::XY(Align::w(Fixed::X(w_a, Tui::bg(Color::Reset, a)))),
-                    Fill::XY(Align::e(Fixed::x(w_c, Tui::bg(Color::Reset, c)))),
+                    Fill::XY(Align::e(Fixed::X(w_c, Tui::bg(Color::Reset, c)))),
                 ),
             )
         })