Struct gsk4::ColorMatrixNode

pub struct ColorMatrixNode(_);

A render node controlling the color matrix of its single child node.

Implementations

impl ColorMatrixNode

pub fn new<P: AsRef<RenderNode>>(
    child: &P,
    color_matrix: &Matrix,
    color_offset: &Vec4
) -> Self

Creates a RenderNode that will drawn the child with color_matrix.

In particular, the node will transform the operation

pixel = color_matrix * pixel + color_offset

for every pixel.

child

The node to draw

color_matrix

The matrix to apply

color_offset

Values to add to the color

Returns

A new RenderNode

pub fn child(&self) -> Option<RenderNode>

Gets the child node that is getting its colors modified by the given self.

Returns

The child that is getting its colors modified

pub fn color_matrix(&self) -> Option<Matrix>

Retrieves the color matrix used by the self.

Returns

a 4x4 color matrix

pub fn color_offset(&self) -> Option<Vec4>

Retrieves the color offset used by the self.

Returns

a color vector

Methods from Deref<Target = RenderNode>

pub fn downcast_ref<T: IsRenderNode>(&self) -> Option<&T>

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 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 serialize() and 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<P: AsRef<Path>>(&self, filename: P) -> Result<(), Error>

This function is equivalent to calling serialize() followed by g_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

Trait Implementations

impl AsRef<RenderNode> for ColorMatrixNode

fn as_ref(&self) -> &RenderNode

Performs the conversion.

impl Clone for ColorMatrixNode

fn clone(&self) -> ColorMatrixNode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ColorMatrixNode

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

Formats the value using the given formatter.

impl Deref for ColorMatrixNode

type Target = RenderNode

The resulting type after dereferencing.

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

Dereferences the value.

impl Display for ColorMatrixNode

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

Formats the value using the given formatter.

impl Hash for ColorMatrixNode

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl IsRenderNode for ColorMatrixNode

const NODE_TYPE: RenderNodeType

fn upcast(self) -> RenderNode

fn upcast_ref(&self) -> &RenderNode

impl Ord for ColorMatrixNode

fn cmp(&self, other: &ColorMatrixNode) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<ColorMatrixNode> for ColorMatrixNode

fn eq(&self, other: &ColorMatrixNode) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &ColorMatrixNode) -> bool

This method tests for !=.

impl PartialOrd<ColorMatrixNode> for ColorMatrixNode

fn partial_cmp(&self, other: &ColorMatrixNode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for ColorMatrixNode

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for ColorMatrixNode

impl StructuralEq for ColorMatrixNode

impl StructuralPartialEq for ColorMatrixNode