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Clean up code for drawing overlays to accept sRGB hex codes instead of Color structs (#3839)

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* Clean up code for drawing overlays to accept sRGB hex codes instead of Color structs

* Consolidate hex code parsing functions
This commit is contained in:
Keavon Chambers
2026-02-27 14:08:58 -08:00
committed by GitHub
parent 9ecbfb7110
commit a8b5203d6c
13 changed files with 89 additions and 202 deletions
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75
node-graph/libraries/no-std-types/src/color/color_types.rs
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@@ -426,12 +426,10 @@ impl Color {
/// ```
#[inline(always)]
pub fn from_rgba8_srgb(red: u8, green: u8, blue: u8, alpha: u8) -> Color {
let map_range = |int_color| int_color as f32 / 255.;
let red = map_range(red);
let green = map_range(green);
let blue = map_range(blue);
let alpha = map_range(alpha);
let red = red as f32 / 255.;
let green = green as f32 / 255.;
let blue = blue as f32 / 255.;
let alpha = alpha as f32 / 255.;
Color { red, green, blue, alpha }.to_linear_srgb().map_rgb(|channel| channel * alpha)
}
@@ -941,70 +939,19 @@ impl Color {
[hue, saturation, lightness, self.alpha]
}
// TODO: This incorrectly handles gamma/linear and premultiplied alpha. For now, this can only be used for overlay drawing, not artwork.
// TODO: Remove this function and have overlays directly use the hex colors and not use the `Color` struct at all.
/// Creates a color from a 6-character RGB hex string (without a # prefix).
///
/// ```
/// use core_types::color::Color;
/// let color = Color::from_rgb_hex_for_overlays("7C67FA").unwrap();
/// ```
pub fn from_rgb_hex_for_overlays(color_str: &str) -> Option<Color> {
if color_str.len() != 6 {
return None;
}
let r = u8::from_str_radix(&color_str[0..2], 16).ok()?;
let g = u8::from_str_radix(&color_str[2..4], 16).ok()?;
let b = u8::from_str_radix(&color_str[4..6], 16).ok()?;
Some(Color::from_rgb8_srgb(r, g, b))
}
/// Creates a color from an 8-character RGBA hex string (without a # prefix).
///
/// ```
/// use core_types::color::Color;
/// let color = Color::from_rgba_str("7C67FA61").unwrap();
/// ```
pub fn from_rgba_str(color_str: &str) -> Option<Color> {
if color_str.len() != 8 {
return None;
}
let red = u8::from_str_radix(&color_str[0..2], 16).ok()? as f32 / 255.;
let green = u8::from_str_radix(&color_str[2..4], 16).ok()? as f32 / 255.;
let blue = u8::from_str_radix(&color_str[4..6], 16).ok()? as f32 / 255.;
let alpha = u8::from_str_radix(&color_str[6..8], 16).ok()? as f32 / 255.;
Some(Color { red, green, blue, alpha })
}
/// Creates a color from a 6-character RGB hex string (without a # prefix).
///
/// ```
/// use core_types::color::Color;
/// let color = Color::from_rgb_str("7C67FA").unwrap();
/// ```
pub fn from_rgb_str(color_str: &str) -> Option<Color> {
if color_str.len() != 6 {
return None;
}
let red = u8::from_str_radix(&color_str[0..2], 16).ok()? as f32 / 255.;
let green = u8::from_str_radix(&color_str[2..4], 16).ok()? as f32 / 255.;
let blue = u8::from_str_radix(&color_str[4..6], 16).ok()? as f32 / 255.;
Some(Color { red, green, blue, alpha: 1. })
}
/// Creates a color from a hex color code string with an optional `#` prefix, such as `#RRGGBB`, `RRGGBB`, `#RRGGBBAA`, or `RRGGBBAA`.
/// Returns `None` for invalid or unrecognized strings.
#[cfg(feature = "std")]
pub fn from_hex_str(hex: &str) -> Option<Color> {
let hex = hex.trim().trim_start_matches('#');
match hex.len() {
6 => Color::from_rgb_str(hex),
8 => Color::from_rgba_str(hex),
_ => None,
if hex.len() != 6 && hex.len() != 8 {
return None;
}
let red = u8::from_str_radix(&hex[0..2], 16).ok()? as f32 / 255.;
let green = u8::from_str_radix(&hex[2..4], 16).ok()? as f32 / 255.;
let blue = u8::from_str_radix(&hex[4..6], 16).ok()? as f32 / 255.;
let alpha = if hex.len() == 8 { u8::from_str_radix(&hex[6..8], 16).ok()? as f32 / 255. } else { 1. };
Some(Color { red, green, blue, alpha })
}
/// Linearly interpolates between two colors based on t.