Struct gsk4::RadialGradientNode
source · #[repr(transparent)]pub struct RadialGradientNode { /* private fields */ }
Expand description
A render node for a radial gradient.
Implementations§
source§impl RadialGradientNode
impl RadialGradientNode
sourcepub fn new(
bounds: &Rect,
center: &Point,
hradius: f32,
vradius: f32,
start: f32,
end: f32,
color_stops: &[ColorStop]
) -> RadialGradientNode
pub fn new( bounds: &Rect, center: &Point, hradius: f32, vradius: f32, start: f32, end: f32, color_stops: &[ColorStop] ) -> RadialGradientNode
Creates a RenderNode
that draws a radial gradient.
The radial gradient starts around @center. The size of the gradient is dictated by @hradius in horizontal orientation and by @vradius in vertical orientation.
bounds
the bounds of the node
center
the center of the gradient
hradius
the horizontal radius
vradius
the vertical radius
start
a percentage >= 0 that defines the start of the gradient around @center
end
a percentage >= 0 that defines the end of the gradient around @center
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 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 RadialGradientNode
impl AsRef<RenderNode> for RadialGradientNode
source§fn as_ref(&self) -> &RenderNode
fn as_ref(&self) -> &RenderNode
source§impl Clone for RadialGradientNode
impl Clone for RadialGradientNode
source§impl Debug for RadialGradientNode
impl Debug for RadialGradientNode
source§impl Deref for RadialGradientNode
impl Deref for RadialGradientNode
source§impl Display for RadialGradientNode
impl Display for RadialGradientNode
source§impl<'a> FromValue<'a> for RadialGradientNode
Available on crate feature v4_6
only.
impl<'a> FromValue<'a> for RadialGradientNode
v4_6
only.§type Checker = GenericValueTypeOrNoneChecker<RadialGradientNode>
type Checker = GenericValueTypeOrNoneChecker<RadialGradientNode>
source§unsafe fn from_value(value: &'a Value) -> Self
unsafe fn from_value(value: &'a Value) -> Self
Value
. Read moresource§impl IsRenderNode for RadialGradientNode
impl IsRenderNode for RadialGradientNode
const NODE_TYPE: RenderNodeType = RenderNodeType::RadialGradientNode
fn upcast(self) -> RenderNode
fn upcast_ref(&self) -> &RenderNode
source§impl StaticType for RadialGradientNode
impl StaticType for RadialGradientNode
source§fn static_type() -> Type
fn static_type() -> Type
Self
.source§impl ToValue for RadialGradientNode
Available on crate feature v4_6
only.
impl ToValue for RadialGradientNode
v4_6
only.source§impl ToValueOptional for RadialGradientNode
Available on crate feature v4_6
only.
impl ToValueOptional for RadialGradientNode
v4_6
only.source§impl ValueType for RadialGradientNode
Available on crate feature v4_6
only.
impl ValueType for RadialGradientNode
v4_6
only.§type Type = RadialGradientNode
type Type = RadialGradientNode
Type
from. Read more