32 lines
1.1 KiB
Rust
32 lines
1.1 KiB
Rust
use color::Rgba8;
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use kiln_core::cp437::tile_to_char;
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use kiln_core::glyph::Glyph;
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use ratatui::layout::Rect;
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use ratatui::prelude::Color;
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use ratatui::style::Style;
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use ratatui::text::Span;
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/// Converts a core [`Rgba8`] color into a ratatui truecolor [`Color`].
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///
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/// The alpha channel is dropped — terminals have no per-cell alpha. Truecolor
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/// requires terminal support; terminals limited to 256 colors approximate it.
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pub fn rgba8_to_color(c: Rgba8) -> Color {
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Color::Rgb(c.r, c.g, c.b)
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}
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/// Converts a [`Glyph`] to a single-character styled [`Span`].
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///
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/// The tile index is mapped to a CP437 character; fg and bg are both applied.
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pub fn glyph_to_span(glyph: Glyph) -> Span<'static> {
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let ch = tile_to_char(glyph.tile).to_string();
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let style = Style::default()
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.fg(rgba8_to_color(glyph.fg))
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.bg(rgba8_to_color(glyph.bg));
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Span::styled(ch, style)
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}
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/// Returns true if two `Rect`s share at least one cell.
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pub fn rects_overlap(a: Rect, b: Rect) -> bool {
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a.x < b.x + b.width && b.x < a.x + a.width && a.y < b.y + b.height && b.y < a.y + a.height
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}
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