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Add color inverting support

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This commit is contained in:
Isaac Mills 2025-02-17 11:41:48 -07:00
parent 9707e9c6cf
commit 675f627c9c
Signed by: fnmain
GPG key ID: B67D7410F33A0F61
2 changed files with 10 additions and 4 deletions
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2
src/lib.rs
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@ -121,6 +121,8 @@ pub struct TextArea<'a> {
pub default_color: Color, pub default_color: Color,
/// The opacity of the text /// The opacity of the text
pub opacity: f32, pub opacity: f32,
/// The amount to invert the color
pub invert: f32,
/// Additional custom glyphs to render. /// Additional custom glyphs to render.
pub custom_glyphs: &'a [CustomGlyph], pub custom_glyphs: &'a [CustomGlyph],
} }

12
src/text_render.rs
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@ -247,10 +247,14 @@ impl TextRenderer {
None => text_area.default_color, None => text_area.default_color,
}; };
let color = Color::rgba( let color = Color::rgba(
(color.r() as f32 * text_area.opacity + 0.5) as u8, ((text_area.invert - color.r() as f32).abs() * text_area.opacity + 0.5)
(color.g() as f32 * text_area.opacity + 0.5) as u8, as u8,
(color.b() as f32 * text_area.opacity + 0.5) as u8, ((text_area.invert - color.g() as f32).abs() * text_area.opacity + 0.5)
(color.a() as f32 * text_area.opacity + 0.5) as u8, as u8,
((text_area.invert - color.b() as f32).abs() * text_area.opacity + 0.5)
as u8,
((text_area.invert - color.a() as f32).abs() * text_area.opacity + 0.5)
as u8,
); );
if let Some(glyph_to_render) = prepare_glyph( if let Some(glyph_to_render) = prepare_glyph(