Crate appthere_color 

Document-aware color management for Rust.

appthere-color provides pure-Rust ICC color transforms, CMYK support, soft proofing, and print-ready color policies. It is designed for document authoring applications that need accurate color management without a C toolchain dependency.

Features

• Color value types: RgbColor, CmykColor, LabColor, XyzColor, GrayColor, and ColorValue
• ICC profile loading: IccProfile wrapping moxcms for pure-Rust profile parsing
• Color transforms: ColorTransform builder for profile-to-profile conversion
• Soft proofing: ProofingConfig with chained two-stage transforms
• Color policy: ColorPolicy and OutputIntent for document-level color management

ICC Backend

This crate uses moxcms exclusively as its ICC backend. No C toolchain is required — the crate cross-compiles cleanly to Android, WASM, and musl targets.

Feature Flags

• std (default): Enables file-path-based profile loading and I/O error support.
• serde: Enables Serialize/Deserialize derives on color types.

Example

use appthere_color::{
    ColorTransform, IccProfile, RenderingIntent, RgbColor,
};

// Load profiles
let srgb = IccProfile::new_srgb();
let adobe = IccProfile::new_adobe_rgb();

// Build a transform
let xform = ColorTransform::builder()
    .source(&srgb)
    .destination(&adobe)
    .intent(RenderingIntent::RelativeColorimetric)
    .build()
    .unwrap();

// Transform a color
let input = [1.0_f32, 0.0, 0.0]; // pure red in sRGB
let mut output = [0.0_f32; 3];
xform.transform(&input, &mut output).unwrap();

Re-exports

pub use color_space::ColorSpace;

pub use color_value::CmykColor;

pub use color_value::LabColor;

pub use color_value::RgbColor;

pub use color_value_ext::ColorValue;

pub use color_value_ext::GrayColor;

pub use color_value_ext::XyzColor;

pub use error::ColorError;

pub use error::ColorResult;

pub use policy::ColorPolicy;

pub use policy::OutputIntent;

pub use profile::IccProfile;

pub use proofing::GamutWarning;

pub use proofing::ProofingConfig;

pub use rendering_intent::RenderingIntent;

pub use transform::ColorTransform;

Modules

color_space

Color space identification for ICC profile matching and transform layout.

color_value

Color value types representing colors in different color spaces.

color_value_ext

Additional color value types and the ColorValue enum.

error

Error types for the appthere-color crate.

policy

Document-level color management policy.

profile

ICC profile loading and inspection via moxcms.

proofing

Soft proofing configuration and chained transform execution.

proofing_builder

Builder for ProofingConfig.

rendering_intent

Rendering intent selection for ICC color transforms.

transform

Color transforms between ICC profiles.