keys 2

kiln-tui/src/utils.rs

@@ -1,6 +1,10 @@
 use color::Rgba8;
+use kiln_core::cp437::tile_to_char;
+use kiln_core::glyph::Glyph;
 use ratatui::layout::Rect;
 use ratatui::prelude::Color;
+use ratatui::style::Style;
+use ratatui::text::Span;
 
 /// Converts a core [`Rgba8`] color into a ratatui truecolor [`Color`].
 ///
@@ -10,6 +14,17 @@ pub fn rgba8_to_color(c: Rgba8) -> Color {
     Color::Rgb(c.r, c.g, c.b)
 }
 
+/// Converts a [`Glyph`] to a single-character styled [`Span`].
+///
+/// The tile index is mapped to a CP437 character; fg and bg are both applied.
+pub fn glyph_to_span(glyph: Glyph) -> Span<'static> {
+    let ch = tile_to_char(glyph.tile).to_string();
+    let style = Style::default()
+        .fg(rgba8_to_color(glyph.fg))
+        .bg(rgba8_to_color(glyph.bg));
+    Span::styled(ch, style)
+}
+
 /// Returns true if two `Rect`s share at least one cell.
 pub fn rects_overlap(a: Rect, b: Rect) -> bool {
     a.x < b.x + b.width && b.x < a.x + a.width && a.y < b.y + b.height && b.y < a.y + a.height