View Source Image.Color (image v0.33.0)
Functions to manage image color and color conversion.
Link to this section Summary
Types
Reference to an ICC color profile
An rbg color expressed as a list of numbers.
A color can be expressed as a list of numbers or as a CSS color name in atom or string format.
Functions
Returns a mapping from CSS color names to CSS hex values and RGB triplets as a list.
Returns the list of color profiles built into
libvips.
Guards whether a given value can be interpreted as a color value.
Guards whether a given profile is one of the inbuilt profiles.
Returns a boolean indicating if the given profile is known and can be used for image operations.
Validates a color returning an
[r, g, b] triplet or error.
Link to this section Types
@type icc_profile() :: :none | :cmyk | :srgb | :p3 | Path.t()
Reference to an ICC color profile
:nonemeans no profile:cmyk,:srgband:p3refer to the built-in color profilesPath.t()means any file system path. If the path is a relative path then is will be loaded from the systems profile directory.
An rbg color expressed as a list of numbers.
The number of list elements and the type varies depending on the image format, colorspace and dimensions.
For a common sRGB image it will be a list of
three of four images. If the fourth number is provided
it will be considered as an alpha transparency band.
A color can be expressed as a list of numbers or as a CSS color name in atom or string format.
Link to this section Functions
Returns a mapping from CSS color names to CSS hex values and RGB triplets as a list.
Returns the list of color profiles built into
libvips.
Guards whether a given value can be interpreted as a color value.
Guards whether a given profile is one of the inbuilt profiles.
Returns a boolean indicating if the given profile is known and can be used for image operations.
Validates a color returning an
[r, g, b] triplet or error.
arguments
Arguments
color which can be specified as a single integer
which or a list of integers representing the color.
The color can also be supplied as a CSS color name as a
string or atom. For example: :misty_rose. See
Image.Color.color_map/0 and Image.Color.rgb_color/1.
returns
Returns
{:ok, [r, g, b]}or{:error, reason}