Struct gsk4::ConicGradientNode
source · #[repr(transparent)]pub struct ConicGradientNode { /* private fields */ }
Expand description
A render node for a conic gradient.
Implementations§
source§impl ConicGradientNode
impl ConicGradientNode
sourcepub fn new(
bounds: &Rect,
center: &Point,
rotation: f32,
color_stops: &[ColorStop]
) -> ConicGradientNode
pub fn new( bounds: &Rect, center: &Point, rotation: f32, color_stops: &[ColorStop] ) -> ConicGradientNode
Creates a RenderNode
that draws a conic gradient.
The conic gradient starts around @center in the direction of @rotation. A rotation of 0 means that the gradient points up. Color stops are then added clockwise.
bounds
the bounds of the node
center
the center of the gradient
rotation
the rotation of the gradient in degrees
color_stops
a pointer to an array of
ColorStop
defining the gradient. The offsets of all color stops
must be increasing. The first stop’s offset must be >= 0 and the last
stop’s offset must be <= 1.
Returns
A new RenderNode
sourcepub fn angle(&self) -> f32
Available on crate feature v4_2
only.
pub fn angle(&self) -> f32
v4_2
only.Retrieves the angle for the gradient in radians, normalized in [0, 2 * PI].
The angle is starting at the top and going clockwise, as expressed in the css specification:
angle = 90 - gsk_conic_gradient_node_get_rotation()
Returns
the angle for the gradient
sourcepub fn color_stops(&self) -> Vec<ColorStop>
pub fn color_stops(&self) -> Vec<ColorStop>
sourcepub fn n_color_stops(&self) -> usize
pub fn n_color_stops(&self) -> usize
Methods from Deref<Target = RenderNode>§
pub const NONE: Option<&'static RenderNode> = None
sourcepub fn draw(&self, cr: &Context)
pub fn draw(&self, cr: &Context)
Draw the contents of @self to the given cairo context.
Typically, you’ll use this function to implement fallback rendering
of RenderNode
s on an intermediate Cairo context, instead of using
the drawing context associated to a gdk::Surface
’s rendering buffer.
For advanced nodes that cannot be supported using Cairo, in particular for nodes doing 3D operations, this function may fail.
cr
cairo context to draw to
sourcepub fn node_type(&self) -> RenderNodeType
pub fn node_type(&self) -> RenderNodeType
sourcepub fn serialize(&self) -> Bytes
pub fn serialize(&self) -> Bytes
Serializes the @self for later deserialization via gsk_render_node_deserialize(). No guarantees are made about the format used other than that the same version of GTK will be able to deserialize the result of a call to gsk_render_node_serialize() and gsk_render_node_deserialize() will correctly reject files it cannot open that were created with previous versions of GTK.
The intended use of this functions is testing, benchmarking and debugging. The format is not meant as a permanent storage format.
Returns
a GBytes
representing the node.
sourcepub fn write_to_file(&self, filename: impl AsRef<Path>) -> Result<(), Error>
pub fn write_to_file(&self, filename: impl AsRef<Path>) -> Result<(), Error>
This function is equivalent to calling serialize()
followed by file_set_contents()
.
See those two functions for details on the arguments.
It is mostly intended for use inside a debugger to quickly dump a render node to a file for later inspection.
filename
the file to save it to.
Returns
true
if saving was successful
pub fn is<T: IsRenderNode>(&self) -> bool
pub fn type_(&self) -> Type
pub fn downcast_ref<T: IsRenderNode>(&self) -> Option<&T>
Trait Implementations§
source§impl AsRef<RenderNode> for ConicGradientNode
impl AsRef<RenderNode> for ConicGradientNode
source§fn as_ref(&self) -> &RenderNode
fn as_ref(&self) -> &RenderNode
source§impl Clone for ConicGradientNode
impl Clone for ConicGradientNode
source§impl Debug for ConicGradientNode
impl Debug for ConicGradientNode
source§impl Deref for ConicGradientNode
impl Deref for ConicGradientNode
source§impl Display for ConicGradientNode
impl Display for ConicGradientNode
source§impl<'a> FromValue<'a> for ConicGradientNode
Available on crate feature v4_6
only.
impl<'a> FromValue<'a> for ConicGradientNode
v4_6
only.§type Checker = GenericValueTypeOrNoneChecker<ConicGradientNode>
type Checker = GenericValueTypeOrNoneChecker<ConicGradientNode>
source§unsafe fn from_value(value: &'a Value) -> Self
unsafe fn from_value(value: &'a Value) -> Self
Value
. Read moresource§impl IsRenderNode for ConicGradientNode
impl IsRenderNode for ConicGradientNode
const NODE_TYPE: RenderNodeType = RenderNodeType::ConicGradientNode
fn upcast(self) -> RenderNode
fn upcast_ref(&self) -> &RenderNode
source§impl StaticType for ConicGradientNode
impl StaticType for ConicGradientNode
source§fn static_type() -> Type
fn static_type() -> Type
Self
.source§impl ToValue for ConicGradientNode
Available on crate feature v4_6
only.
impl ToValue for ConicGradientNode
v4_6
only.source§impl ToValueOptional for ConicGradientNode
Available on crate feature v4_6
only.
impl ToValueOptional for ConicGradientNode
v4_6
only.source§impl ValueType for ConicGradientNode
Available on crate feature v4_6
only.
impl ValueType for ConicGradientNode
v4_6
only.§type Type = ConicGradientNode
type Type = ConicGradientNode
Type
from. Read more