Struct gsk4::ContainerNode
source · #[repr(transparent)]pub struct ContainerNode { /* private fields */ }
Expand description
A render node that can contain other render nodes.
Implementations§
source§impl ContainerNode
impl ContainerNode
source§impl ContainerNode
impl ContainerNode
sourcepub fn new(children: &[RenderNode]) -> ContainerNode
pub fn new(children: &[RenderNode]) -> ContainerNode
Creates a new RenderNode
instance for holding the given @children.
The new node will acquire a reference to each of the children.
children
The children of the node
Returns
the new RenderNode
sourcepub fn n_children(&self) -> u32
pub fn n_children(&self) -> u32
source§impl ContainerNode
impl ContainerNode
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 ContainerNode
impl AsRef<RenderNode> for ContainerNode
source§fn as_ref(&self) -> &RenderNode
fn as_ref(&self) -> &RenderNode
source§impl Clone for ContainerNode
impl Clone for ContainerNode
source§impl Debug for ContainerNode
impl Debug for ContainerNode
source§impl Deref for ContainerNode
impl Deref for ContainerNode
source§impl Display for ContainerNode
impl Display for ContainerNode
source§impl<'a> FromValue<'a> for ContainerNode
Available on crate feature v4_6
only.
impl<'a> FromValue<'a> for ContainerNode
v4_6
only.§type Checker = GenericValueTypeOrNoneChecker<ContainerNode>
type Checker = GenericValueTypeOrNoneChecker<ContainerNode>
source§unsafe fn from_value(value: &'a Value) -> Self
unsafe fn from_value(value: &'a Value) -> Self
Value
. Read moresource§impl IsRenderNode for ContainerNode
impl IsRenderNode for ContainerNode
const NODE_TYPE: RenderNodeType = RenderNodeType::ContainerNode
fn upcast(self) -> RenderNode
fn upcast_ref(&self) -> &RenderNode
source§impl StaticType for ContainerNode
impl StaticType for ContainerNode
source§fn static_type() -> Type
fn static_type() -> Type
Self
.source§impl ToValue for ContainerNode
Available on crate feature v4_6
only.
impl ToValue for ContainerNode
v4_6
only.source§impl ToValueOptional for ContainerNode
Available on crate feature v4_6
only.
impl ToValueOptional for ContainerNode
v4_6
only.source§impl ValueType for ContainerNode
Available on crate feature v4_6
only.
impl ValueType for ContainerNode
v4_6
only.§type Type = ContainerNode
type Type = ContainerNode
Type
from. Read more