BlendMode

The blend modes of the W3C Compositing and Blending specification, the same ones as CSS mix-blend-mode. The last four (Hue, Saturation, Color, Luminosity) are non-separable: they mix the three channels together instead of one channel at a time.

Import

use helpers4::color::BlendMode;

Cargo feature color (enabled by default). To compile only this module:

cargo add helpers4 --no-default-features --features color

or in Cargo.toml:

[dependencies]
helpers4 = { version = "0.0.11", default-features = false, features = ["color"] }

Definition

#[non_exhaustive]
pub enum BlendMode {
    /// The source replaces the backdrop (a plain alpha composite). The default.
    #[default]
    Normal,
    /// Multiplies the channels: always darker.
    Multiply,
    /// The inverse of [`Multiply`](Self::Multiply): always lighter.
    Screen,
    /// [`Multiply`](Self::Multiply) or [`Screen`](Self::Screen) depending on the backdrop.
    Overlay,
    /// The darker of the two, per channel.
    Darken,
    /// The lighter of the two, per channel.
    Lighten,
    /// Brightens the backdrop to reflect the source.
    ColorDodge,
    /// Darkens the backdrop to reflect the source.
    ColorBurn,
    /// [`Multiply`](Self::Multiply) or [`Screen`](Self::Screen) depending on the source.
    HardLight,
    /// A softer [`HardLight`](Self::HardLight).
    SoftLight,
    /// The absolute difference of the two.
    Difference,
    /// Like [`Difference`](Self::Difference), with less contrast.
    Exclusion,
    /// The hue of the source with the saturation and luminosity of the backdrop.
    Hue,
    /// The saturation of the source with the hue and luminosity of the backdrop.
    Saturation,
    /// The hue and saturation of the source with the luminosity of the backdrop.
    Color,
    /// The luminosity of the source with the hue and saturation of the backdrop.
    Luminosity,
}

Examples

use helpers4::color::BlendMode;

assert_eq!(BlendMode::default(), BlendMode::Normal);

Source

src/color/blend.rs