implement bold modifier

crates/tek_core/src/tui.rs

@@ -258,6 +258,13 @@ impl TuiOutput {
     ) {
         buffer_update(&mut self.buffer, area, callback);
     }
+    pub fn fill_bold (&mut self, area: [u16;4], on: bool) {
+        if on {
+            self.buffer_update(area, &|cell,_,_|cell.modifier.insert(Modifier::BOLD))
+        } else {
+            self.buffer_update(area, &|cell,_,_|cell.modifier.remove(Modifier::BOLD))
+        }
+    }
     pub fn fill_bg (&mut self, area: [u16;4], color: Color) {
         self.buffer_update(area, &|cell,_,_|{cell.set_bg(color);})
     }
@@ -428,12 +435,25 @@ pub trait TuiStyle: Widget<Engine = Tui> + Sized {
     fn bg (self, color: Color) -> impl Widget<Engine = Tui> {
         Layers::new(move |add|{ add(&Background(color))?; add(&self) })
     }
+    fn bold (self, on: bool) -> impl Widget<Engine = Tui> {
+        Layers::new(move |add|{ add(&Bold(on))?; add(&self) })
+    }
     fn border (self, style: impl BorderStyle) -> impl Widget<Engine = Tui> {
         Bordered(style, self)
     }
 }
 impl<W: Widget<Engine = Tui>> TuiStyle for W {}
 
+pub struct Bold(pub bool);
+impl Widget for Bold {
+    type Engine = Tui;
+    fn layout (&self, _: [u16;2]) -> Perhaps<[u16;2]> {
+        Ok(Some([0,0]))
+    }
+    fn render (&self, to: &mut TuiOutput) -> Usually<()> {
+        Ok(to.fill_bold(to.area(), self.0))
+    }
+}
 pub struct Foreground(pub Color);
 impl Widget for Foreground {
     type Engine = Tui;

crates/tek_sequencer/src/arranger_tui.rs

@@ -34,7 +34,9 @@ impl Content for ArrangerStatusBar {
             Self::PhrasePool        => "Phrases",
             Self::PhraseEditor      => "Sequencer",
         };
-        TuiStyle::bg(format!(" {label} "), Color::Rgb(150, 160, 90)).fg(Color::Rgb(0, 0, 0))
+        TuiStyle::bg(format!(" {label} "), Color::Rgb(150, 160, 90))
+            .fg(Color::Rgb(0, 0, 0))
+            .bold(true)
     }
 }
 impl Content for Arrangement<Tui> {