pub struct RGBA { /* private fields */ }
Expand description
A RGBA
is used to represent a color, in a way that is compatible
with cairo’s notion of color.
RGBA
is a convenient way to pass colors around. It’s based on
cairo’s way to deal with colors and mirrors its behavior. All values
are in the range from 0.0 to 1.0 inclusive. So the color
(0.0, 0.0, 0.0, 0.0) represents transparent black and
(1.0, 1.0, 1.0, 1.0) is opaque white. Other values will
be clamped to this range when drawing.
GLib type: Inline allocated boxed type with stack copy semantics.
Implementations§
Source§impl RGBA
impl RGBA
Sourcepub fn to_str(&self) -> GString
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
Source§impl RGBA
impl RGBA
pub const BLACK: RGBA = _
pub const BLUE: RGBA = _
pub const GREEN: RGBA = _
pub const RED: RGBA = _
pub const WHITE: RGBA = _
pub const TRANSPARENT: RGBA = _
pub const fn new(red: f32, green: f32, blue: f32, alpha: f32) -> Self
Sourcepub const fn with_green(self, green: f32) -> Self
pub const fn with_green(self, green: f32) -> Self
Sourcepub const fn with_alpha(self, alpha: f32) -> Self
pub const fn with_alpha(self, alpha: f32) -> Self
Sourcepub fn builder() -> RGBABuilder
pub fn builder() -> RGBABuilder
Creates a new builder-pattern struct instance to construct RGBA
objects.
This method returns an instance of
RGBABuilder
which can be used to
create RGBA
objects.
pub fn red(&self) -> f32
pub fn set_red(&mut self, red: f32)
pub fn green(&self) -> f32
pub fn set_green(&mut self, green: f32)
pub fn blue(&self) -> f32
pub fn set_blue(&mut self, blue: f32)
pub fn alpha(&self) -> f32
pub fn set_alpha(&mut self, alpha: f32)
Sourcepub fn parse(s: impl IntoGStr) -> Result<RGBA, BoolError>
pub fn parse(s: impl IntoGStr) -> Result<RGBA, BoolError>
Parses a textual representation of a color.
The string can be either one of:
- A standard name (Taken from the CSS specification).
- A hexadecimal value in the form “#rgb”, “#rrggbb”, “#rrrgggbbb” or ”#rrrrggggbbbb”
- A hexadecimal value in the form “#rgba”, “#rrggbbaa”, or ”#rrrrggggbbbbaaaa”
- 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)”
- A HSL color in the form “hsl(hue, saturation, lightness)”
- A HSLA color in the form “hsla(hue, saturation, lightness, alpha)”
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§
Source§impl HasParamSpec for RGBA
impl HasParamSpec for RGBA
Source§impl StaticType for RGBA
impl StaticType for RGBA
Source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Copy for RGBA
impl Eq for RGBA
Auto Trait Implementations§
impl Freeze for RGBA
impl RefUnwindSafe for RGBA
impl Send for RGBA
impl Sync for RGBA
impl Unpin for RGBA
impl UnwindSafe for RGBA
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)Source§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
Source§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
Source§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
Source§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
Source§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
Source§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
Source§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
unsafe fn from_glib_none_as_vec(ptr: *const GList) -> Vec<T>
unsafe fn from_glib_container_as_vec(_: *const GList) -> Vec<T>
unsafe fn from_glib_full_as_vec(_: *const GList) -> Vec<T>
Source§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
unsafe fn from_glib_none_as_vec(ptr: *const GPtrArray) -> Vec<T>
unsafe fn from_glib_container_as_vec(_: *const GPtrArray) -> Vec<T>
unsafe fn from_glib_full_as_vec(_: *const GPtrArray) -> Vec<T>
Source§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
unsafe fn from_glib_none_as_vec(ptr: *const GSList) -> Vec<T>
unsafe fn from_glib_container_as_vec(_: *const GSList) -> Vec<T>
unsafe fn from_glib_full_as_vec(_: *const GSList) -> Vec<T>
Source§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
unsafe fn from_glib_none_as_vec(ptr: *mut GList) -> Vec<T>
unsafe fn from_glib_container_as_vec(ptr: *mut GList) -> Vec<T>
unsafe fn from_glib_full_as_vec(ptr: *mut GList) -> Vec<T>
Source§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere
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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
unsafe fn from_glib_none_as_vec(ptr: *mut GPtrArray) -> Vec<T>
unsafe fn from_glib_container_as_vec(ptr: *mut GPtrArray) -> Vec<T>
unsafe fn from_glib_full_as_vec(ptr: *mut GPtrArray) -> Vec<T>
Source§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
unsafe fn from_glib_none_as_vec(ptr: *mut GSList) -> Vec<T>
unsafe fn from_glib_container_as_vec(ptr: *mut GSList) -> Vec<T>
unsafe fn from_glib_full_as_vec(ptr: *mut GSList) -> Vec<T>
Source§impl<T> IntoClosureReturnValue for T
impl<T> IntoClosureReturnValue for T
fn into_closure_return_value(self) -> Option<Value>
Source§impl<T> PropertyGet for Twhere
T: HasParamSpec,
impl<T> PropertyGet for Twhere
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impl<T> StaticTypeExt for Twhere
T: StaticType,
Source§fn ensure_type()
fn ensure_type()
Source§impl<T> ToSendValue for T
impl<T> ToSendValue for T
Source§fn to_send_value(&self) -> SendValue
fn to_send_value(&self) -> SendValue
SendValue
clone of self
.