Struct gsk4::ShadowNode

#[repr(transparent)]
pub struct ShadowNode { /* private fields */ }

A render node drawing one or more shadows behind its single child node.

Implementations

impl ShadowNode

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

Return the inner pointer to the underlying C value.

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

Borrows the underlying C value.

impl ShadowNode

pub fn new(child: impl AsRef<RenderNode>, shadows: &[Shadow]) -> ShadowNode

Creates a RenderNode that will draw a @child with the given @shadows below it.

child

The node to draw

shadows

The shadows to apply

Returns

A new RenderNode

pub fn child(&self) -> RenderNode

Retrieves the child RenderNode of the shadow @self.

Returns

the child render node

pub fn n_shadows(&self) -> usize

Retrieves the number of shadows in the @self.

Returns

the number of shadows.

impl ShadowNode

pub fn shadow(&self, i: usize) -> Shadow

Retrieves the shadow data at the given index @i.

i

the given index

Returns

the shadow data

Methods from Deref<Target = RenderNode>

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

Return the inner pointer to the underlying C value.

pub const NONE: Option<&'static RenderNode> = None

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 RenderNodes 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

pub fn bounds(&self) -> Rect

Retrieves the boundaries of the @self.

The node will not draw outside of its boundaries.

Returns

bounds

return location for the boundaries

pub fn node_type(&self) -> RenderNodeType

Returns the type of the @self.

Returns

the type of the RenderNode

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.

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

impl AsRef<RenderNode> for ShadowNode

fn as_ref(&self) -> &RenderNode

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for ShadowNode

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ShadowNode

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

Formats the value using the given formatter.

impl Deref for ShadowNode

type Target = RenderNode

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Display for ShadowNode

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

Formats the value using the given formatter.

impl<'a> FromValue<'a> for ShadowNode

Available on crate feature v4_6 only.

type Checker = GenericValueTypeOrNoneChecker<ShadowNode>

Value type checker.

unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

impl IsRenderNode for ShadowNode

const NODE_TYPE: RenderNodeType = RenderNodeType::ShadowNode

fn upcast(self) -> RenderNode

fn upcast_ref(&self) -> &RenderNode

impl StaticType for ShadowNode

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for ShadowNode

Available on crate feature v4_6 only.

fn to_value(&self) -> Value

Convert a value to a Value.

fn value_type(&self) -> Type

Returns the type identifer of self.

impl ToValueOptional for ShadowNode

Available on crate feature v4_6 only.

fn to_value_optional(s: Option<&Self>) -> Value

Convert an Option to a Value.

impl ValueType for ShadowNode

Available on crate feature v4_6 only.

type Type = ShadowNode

Type to get the Type from.