Struct gsk4::LinearGradientNode
source · #[repr(transparent)]pub struct LinearGradientNode { /* private fields */ }
Expand description
A render node for a linear gradient.
Implementations§
source§impl LinearGradientNode
impl LinearGradientNode
sourcepub fn new(
bounds: &Rect,
start: &Point,
end: &Point,
color_stops: &[ColorStop]
) -> LinearGradientNode
pub fn new( bounds: &Rect, start: &Point, end: &Point, color_stops: &[ColorStop] ) -> LinearGradientNode
Creates a RenderNode
that will create a linear gradient from the given
points and color stops, and render that into the area given by @bounds.
bounds
the rectangle to render the linear gradient into
start
the point at which the linear gradient will begin
end
the point at which the linear gradient will finish
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 LinearGradientNode
impl AsRef<RenderNode> for LinearGradientNode
source§fn as_ref(&self) -> &RenderNode
fn as_ref(&self) -> &RenderNode
source§impl Clone for LinearGradientNode
impl Clone for LinearGradientNode
source§impl Debug for LinearGradientNode
impl Debug for LinearGradientNode
source§impl Deref for LinearGradientNode
impl Deref for LinearGradientNode
source§impl Display for LinearGradientNode
impl Display for LinearGradientNode
source§impl<'a> FromValue<'a> for LinearGradientNode
Available on crate feature v4_6
only.
impl<'a> FromValue<'a> for LinearGradientNode
v4_6
only.§type Checker = GenericValueTypeOrNoneChecker<LinearGradientNode>
type Checker = GenericValueTypeOrNoneChecker<LinearGradientNode>
source§unsafe fn from_value(value: &'a Value) -> Self
unsafe fn from_value(value: &'a Value) -> Self
Value
. Read moresource§impl IsRenderNode for LinearGradientNode
impl IsRenderNode for LinearGradientNode
const NODE_TYPE: RenderNodeType = RenderNodeType::LinearGradientNode
fn upcast(self) -> RenderNode
fn upcast_ref(&self) -> &RenderNode
source§impl StaticType for LinearGradientNode
impl StaticType for LinearGradientNode
source§fn static_type() -> Type
fn static_type() -> Type
Self
.source§impl ToValue for LinearGradientNode
Available on crate feature v4_6
only.
impl ToValue for LinearGradientNode
v4_6
only.source§impl ToValueOptional for LinearGradientNode
Available on crate feature v4_6
only.
impl ToValueOptional for LinearGradientNode
v4_6
only.source§impl ValueType for LinearGradientNode
Available on crate feature v4_6
only.
impl ValueType for LinearGradientNode
v4_6
only.§type Type = LinearGradientNode
type Type = LinearGradientNode
Type
from. Read more