refactor: extract more tui_content modules

tui/src/tui_content/tui_phat.rs

@@ -0,0 +1,29 @@
+use crate::*;
+
+/// A cell that takes up 3 rows on its own,
+/// but stacks, giving (N+1)*2 rows per N cells.
+pub struct Phat<T> {
+    pub width:   u16,
+    pub height:  u16,
+    pub content: T,
+    pub colors:  [Color;4],
+}
+impl<T> Phat<T> {
+    /// A phat line
+    pub fn lo (fg: Color, bg: Color) -> impl Content<TuiOut> {
+        Fixed::y(1, Tui::fg_bg(fg, bg, RepeatH(&"▄")))
+    }
+    /// A phat line
+    pub fn hi (fg: Color, bg: Color) -> impl Content<TuiOut> {
+        Fixed::y(1, Tui::fg_bg(fg, bg, RepeatH(&"▀")))
+    }
+}
+impl<T: Content<TuiOut>> Content<TuiOut> for Phat<T> {
+    fn content (&self) -> impl Render<TuiOut> {
+        let [fg, bg, hi, lo] = self.colors;
+        let top = Fixed::y(1, Self::lo(bg, hi));
+        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))))
+    }
+}