Enum piet::Color [−][src]
#[non_exhaustive]
pub enum Color {
// some variants omitted
}
Expand description
A datatype representing color.
Currently this is only a 32 bit RGBA value, but it will likely extend to some form of wide-gamut colorspace, and in the meantime is useful for giving programs proper type.
Implementations
Create a color from 8 bit per sample RGB values.
Create a color from 8 bit per sample RGBA values.
Create a color from a 32-bit rgba value (alpha as least significant byte).
Attempt to create a color from a CSS-style hex string.
This will accept strings in the following formats, with or without
the leading #
:
rrggbb
rrggbbaa
rbg
rbga
This method returns a ColorParseError
if the color cannot be parsed.
Create a color from a grey value.
use piet::Color;
let grey_val = 0x55;
let one = Color::grey8(grey_val);
// is shorthand for
let two = Color::rgb8(grey_val, grey_val, grey_val);
assert_eq!(one.as_rgba_u32(), two.as_rgba_u32());
Create a color from four floating point values, each in the range 0.0 to 1.0.
The interpretation is the same as rgba32, and no greater precision is (currently) assumed.
Create a color from three floating point values, each in the range 0.0 to 1.0.
The interpretation is the same as rgb8, and no greater precision is (currently) assumed.
Create a color from a CIEL*a*b* polar (also known as CIE HCL) specification.
The h
parameter is an angle in degrees, with 0 roughly magenta, 90
roughly yellow, 180 roughly cyan, and 270 roughly blue. The l
parameter is perceptual luminance, with 0 black and 100 white.
The c
parameter is a chrominance concentration, with 0 grayscale
and a nominal maximum of 127 (in the future, higher values might
be useful, for high gamut contexts).
Currently this is just converted into sRGB, but in the future as we support high-gamut colorspaces, it can be used to specify more colors or existing colors with a higher accuracy.
Currently out-of-gamut values are clipped to the nearest sRGB color, which is perhaps not ideal (the clipping might change the hue). See https://github.com/d3/d3-color/issues/33 for discussion.
Create a color from a CIEL*a*b* polar specification and alpha.
The a
value represents alpha in the range 0.0 to 1.0.
Change just the alpha value of a color.
The a
value represents alpha in the range 0.0 to 1.0.
Convert a color value to a 32-bit rgba value.
Convert a color value to four f64 values, each in the range 0.0 to 1.0.
Fully transparent
Trait Implementations
Performs the conversion.
Auto Trait Implementations
impl RefUnwindSafe for Color
impl UnwindSafe for Color
Blanket Implementations
Mutably borrows from an owned value. Read more