[−][src]Trait colorsys::ColorTransform

pub trait ColorTransform {
    fn lighten(&mut self, amt: f64);

    fn saturate(&mut self, sat: SaturationInSpace);

    fn adjust_hue(&mut self, hue: f64);

    fn grayscale_simple(&mut self);

    fn invert(&mut self);
}

A collection of methods to some special modification of color. Some methods (like saturate, lighten, etc.) requires (inside implementation) converting to another color space and converting back.

Required methods

fn lighten(&mut self, amt: f64)

Makes color lighter or (if amt is negative) darker. Amt is percent - 1..100 to make color lighter; -100..-1 for blacking-out

fn saturate(&mut self, sat: SaturationInSpace)

Saturate/desaturate color. Value is percent: -100..100. You need specify in what color space you want to increase/decrease saturation.

fn adjust_hue(&mut self, hue: f64)

increase/decrease color tone. Value is degree - -360..360.

fn grayscale_simple(&mut self)

Brings color to a shade of gray. For more specific grayscale methods see Rgb.grayscale

fn invert(&mut self)

Just inverts color

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Implementors

impl ColorTransform for Hsl[src]

impl ColorTransform for Rgb[src]

fn lighten(&mut self, amt: f64)[src]

Lighten or darken color. amt is a percent with negative values - -100..100

Example

use colorsys::{Rgb,ColorTransform, ColorTuple};
let tuple = (30.0, 108.0, 77.0);
let mut rgb = Rgb::from(&tuple);

rgb.lighten(20.0);
assert_eq!(rgb.to_css_string(), "rgb(52,188,134)" );

rgb.lighten(-20.0);
assert_eq!(rgb.to_css_string(), "rgb(30,108,77)" );

rgb.lighten(-20.0);
assert_eq!(rgb.to_css_string(), "rgb(8,28,20)" );

rgb.lighten(301.123);
assert_eq!(rgb.to_css_string(), "rgb(255,255,255)" );
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