From 91dfed107791cb631f016664613d4cf4c42d4d68 Mon Sep 17 00:00:00 2001
From: unspeaker <hora.nqma@protonmail.com>
Date: Thu, 24 Apr 2025 21:03:52 +0300
Subject: [PATCH] feat(tui): add Tryptich (3-col layout)

---
 tui/src/lib.rs                      |  2 ++
 tui/src/tui_content.rs              | 19 +++++-----
 tui/src/tui_content/tui_tryptich.rs | 56 +++++++++++++++++++++++++++++
 3 files changed, 68 insertions(+), 9 deletions(-)
 create mode 100644 tui/src/tui_content/tui_tryptich.rs

diff --git a/tui/src/lib.rs b/tui/src/lib.rs
index f9b1b98..4a5f751 100644
--- a/tui/src/lib.rs
+++ b/tui/src/lib.rs
@@ -1,3 +1,5 @@
+#![feature(type_changing_struct_update)]
+
 mod tui_engine;  pub use self::tui_engine::*;
 mod tui_content; pub use self::tui_content::*;
 
diff --git a/tui/src/tui_content.rs b/tui/src/tui_content.rs
index 0b15a95..0ea658c 100644
--- a/tui/src/tui_content.rs
+++ b/tui/src/tui_content.rs
@@ -21,12 +21,13 @@ impl<T: Content<TuiOut>> Content<TuiOut> for std::sync::Arc<T> {
     }
 }
 
-mod tui_border; pub use self::tui_border::*;
-mod tui_color;  pub use self::tui_color::*;
-mod tui_field;  pub use self::tui_field::*;
-mod tui_file;   pub use self::tui_file::*;
-mod tui_phat;   pub use self::tui_phat::*;
-mod tui_repeat; pub use self::tui_repeat::*;
-mod tui_scroll; pub use self::tui_scroll::*;
-mod tui_string; pub use self::tui_string::*;
-mod tui_style;  pub use self::tui_style::*;
+mod tui_border;   pub use self::tui_border::*;
+mod tui_color;    pub use self::tui_color::*;
+mod tui_field;    pub use self::tui_field::*;
+mod tui_file;     pub use self::tui_file::*;
+mod tui_phat;     pub use self::tui_phat::*;
+mod tui_repeat;   pub use self::tui_repeat::*;
+mod tui_scroll;   pub use self::tui_scroll::*;
+mod tui_string;   pub use self::tui_string::*;
+mod tui_style;    pub use self::tui_style::*;
+mod tui_tryptich; pub use self::tui_tryptich::*;
diff --git a/tui/src/tui_content/tui_tryptich.rs b/tui/src/tui_content/tui_tryptich.rs
new file mode 100644
index 0000000..ef8bf6b
--- /dev/null
+++ b/tui/src/tui_content/tui_tryptich.rs
@@ -0,0 +1,56 @@
+use crate::*;
+
+/// A three-column layout.
+pub struct Tryptich<A, B, C> {
+    pub top:    bool,
+    pub h:      u16,
+    pub left:   (u16, A),
+    pub middle: (u16, B),
+    pub right:  (u16, C),
+}
+
+impl Tryptich<(), (), ()> {
+    pub fn center (h: u16) -> Self {
+        Self { h, top: false, left: (0, ()), middle: (0, ()), right: (0, ()) }
+    }
+    pub fn top (h: u16) -> Self {
+        Self { h, top: true, left: (0, ()), middle: (0, ()), right: (0, ()) }
+    }
+}
+
+impl<A, B, C> Tryptich<A, B, C> {
+    pub fn left <D> (self, w: u16, content: D) -> Tryptich<D, B, C> {
+        Tryptich { left: (w, content), ..self }
+    }
+    pub fn middle <D> (self, w: u16, content: D) -> Tryptich<A, D, C> {
+        Tryptich { middle: (w, content), ..self }
+    }
+    pub fn right <D> (self, w: u16, content: D) -> Tryptich<A, B, D> {
+        Tryptich { right: (w, content), ..self }
+    }
+}
+
+impl<A, B, C> Content<TuiOut> for Tryptich<A, B, C>
+where A: Content<TuiOut>, B: Content<TuiOut>, C: Content<TuiOut> {
+    fn content (&self) -> impl Render<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 {
+            Bsp::a(
+                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::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))))),
+                Bsp::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)))),
+                ),
+            )
+        })
+    }
+}
+