Struct gsk4::RadialGradientNode[][src]

pub struct RadialGradientNode(_);
Expand description

A render node for a radial gradient.

Implementations

Creates a RenderNode that draws a radial gradient.

The radial gradient starts around center. The size of the gradient is dictated by hradius in horizontal orientation and by vradius in vertial orientation.

bounds

the bounds of the node

center

the center of the gradient

hradius

the horizontal radius

vradius

the vertical radius

start

a percentage >= 0 that defines the start of the gradient around center

end

a percentage >= 0 that defines the end of the gradient around center

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

Retrieves the center pointer for the gradient.

Returns

the center point for the gradient

Retrieves the color stops in the gradient.

Returns

the color stops in the gradient

Retrieves the end value for the gradient.

Returns

the end value for the gradient

Retrieves the horizonal radius for the gradient.

Returns

the horizontal radius for the gradient

Retrieves the number of color stops in the gradient.

Returns

the number of color stops

Retrieves the start value for the gradient.

Returns

the start value for the gradient

Retrieves the vertical radius for the gradient.

Returns

the vertical radius for the gradient

Methods from Deref<Target = RenderNode>

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

Retrieves the boundaries of the self.

The node will not draw outside of its boundaries.

Returns
bounds

return location for the boundaries

Returns the type of the self.

Returns

the type of the RenderNode

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.

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

Performs the conversion.

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

The resulting type after dereferencing.

Dereferences the value.

Formats the value using the given formatter. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

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

This method tests for !=.

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

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

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

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

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

Returns the type identifier of Self.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.