Struct RGBA 

pub struct RGBA { /* private fields */ }

A RGBA is used to represent a (possibly translucent) color, in a way that is compatible with cairo’s notion of color.

Implementations

impl RGBA

pub fn as_ptr(&self) -> *mut GdkRGBA

pub unsafe fn from_glib_ptr_borrow<'a>(ptr: *const GdkRGBA) -> &'a Self

Borrows the underlying C value.

pub unsafe fn from_glib_ptr_borrow_mut<'a>(ptr: *mut GdkRGBA) -> &'a mut Self

Borrows the underlying C value mutably.

impl RGBA

pub fn to_str(&self) -> GString

Returns a textual specification of self in the form rgb(r,g,b) or rgba(r g,b,a), where “r”, “g”, “b” and “a” represent the red, green, blue and alpha values respectively. “r”, “g”, and “b” are represented as integers in the range 0 to 255, and “a” is represented as a floating point value in the range 0 to 1.

These string forms are string forms that are supported by the CSS3 colors module, and can be parsed by parse().

Note that this string representation may lose some precision, since “r”, “g” and “b” are represented as 8-bit integers. If this is a concern, you should use a different representation.

Returns

A newly allocated text string

impl RGBA

pub const BLACK: RGBA

pub const BLUE: RGBA

pub const GREEN: RGBA

pub const RED: RGBA

pub const WHITE: RGBA

pub fn new(red: f64, green: f64, blue: f64, alpha: f64) -> RGBA

pub fn red(&self) -> f64

pub fn set_red(&mut self, red: f64)

pub fn green(&self) -> f64

pub fn set_green(&mut self, green: f64)

pub fn blue(&self) -> f64

pub fn set_blue(&mut self, blue: f64)

pub fn alpha(&self) -> f64

pub fn set_alpha(&mut self, alpha: f64)

pub fn parse(s: &str) -> Result<Self, BoolError>

Parses a textual representation of a color, filling in the red, green, blue and alpha fields of the self RGBA.

The string can be either one of:

• A standard name (Taken from the X11 rgb.txt file).
• A hexadecimal value in the form “`rgb”, “\rrggbb”, “\rrrgggbbb” or ”\rrrrggggbbbb`”
• A RGB color in the form “rgb(r,g,b)” (In this case the color will have full opacity)
• A RGBA color in the form “rgba(r,g,b,a)”

Where “r”, “g”, “b” and “a” are respectively the red, green, blue and alpha color values. In the last two cases, “r”, “g”, and “b” are either integers in the range 0 to 255 or percentage values in the range 0% to 100%, and a is a floating point value in the range 0 to 1.

spec

the string specifying the color

Returns

true if the parsing succeeded

Trait Implementations

impl Clone for RGBA

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for RGBA

impl Debug for RGBA

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for RGBA

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for RGBA

impl FromStr for RGBA

type Err = BoolError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl HasParamSpec for RGBA

type ParamSpec = ParamSpecBoxed

type SetValue = RGBA

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(&str) -> ParamSpecBoxedBuilder<'_, RGBA>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for RGBA

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for RGBA

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StaticType for RGBA

fn static_type() -> Type

Returns the type identifier of Self.