Struct gsk4::TextureScaleNode
source · #[repr(transparent)]pub struct TextureScaleNode { /* private fields */ }
v4_10
only.Expand description
A render node for a gdk::Texture
.
Implementations§
source§impl TextureScaleNode
impl TextureScaleNode
sourcepub fn new(
texture: &impl IsA<Texture>,
bounds: &Rect,
filter: ScalingFilter
) -> TextureScaleNode
pub fn new( texture: &impl IsA<Texture>, bounds: &Rect, filter: ScalingFilter ) -> TextureScaleNode
Creates a node that scales the texture to the size given by the bounds and the filter and then places it at the bounds’ position.
This node is intended for tight control over scaling applied to a texture, such as in image editors and requires the application to be aware of the whole render tree as further transforms may be applied that conflict with the desired effect of this node.
texture
the texture to scale
bounds
the size of the texture to scale to
filter
how to scale the texture
Returns
A new RenderNode
sourcepub fn filter(&self) -> ScalingFilter
pub fn filter(&self) -> ScalingFilter
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 TextureScaleNode
impl AsRef<RenderNode> for TextureScaleNode
source§fn as_ref(&self) -> &RenderNode
fn as_ref(&self) -> &RenderNode
source§impl Clone for TextureScaleNode
impl Clone for TextureScaleNode
source§impl Debug for TextureScaleNode
impl Debug for TextureScaleNode
source§impl Deref for TextureScaleNode
impl Deref for TextureScaleNode
source§impl Display for TextureScaleNode
impl Display for TextureScaleNode
source§impl<'a> FromValue<'a> for TextureScaleNode
Available on crate feature v4_6
only.
impl<'a> FromValue<'a> for TextureScaleNode
v4_6
only.§type Checker = GenericValueTypeOrNoneChecker<TextureScaleNode>
type Checker = GenericValueTypeOrNoneChecker<TextureScaleNode>
source§unsafe fn from_value(value: &'a Value) -> Self
unsafe fn from_value(value: &'a Value) -> Self
Value
. Read moresource§impl IsRenderNode for TextureScaleNode
impl IsRenderNode for TextureScaleNode
const NODE_TYPE: RenderNodeType = RenderNodeType::TextureScaleNode
fn upcast(self) -> RenderNode
fn upcast_ref(&self) -> &RenderNode
source§impl StaticType for TextureScaleNode
impl StaticType for TextureScaleNode
source§fn static_type() -> Type
fn static_type() -> Type
Self
.source§impl ToValue for TextureScaleNode
Available on crate feature v4_6
only.
impl ToValue for TextureScaleNode
v4_6
only.source§impl ToValueOptional for TextureScaleNode
Available on crate feature v4_6
only.
impl ToValueOptional for TextureScaleNode
v4_6
only.source§impl ValueType for TextureScaleNode
Available on crate feature v4_6
only.
impl ValueType for TextureScaleNode
v4_6
only.§type Type = TextureScaleNode
type Type = TextureScaleNode
Type
from. Read more