Struct ParamSpecVariant

pub struct ParamSpecVariant { /* private fields */ }

A ParamSpec derived structure that contains the meta data for GVariant properties.

When comparing values with g_param_values_cmp(), scalar values with the same type will be compared with g_variant_compare(). Other non-None variants will be checked for equality with g_variant_equal(), and their sort order is otherwise undefined. None is ordered before non-None variants. Two None values compare equal. A ParamSpec derived structure that contains the meta data for GVariant properties.

When comparing values with g_param_values_cmp(), scalar values with the same type will be compared with g_variant_compare(). Other non-None variants will be checked for equality with g_variant_equal(), and their sort order is otherwise undefined. None is ordered before non-None variants. Two None values compare equal.

GLib type: Shared boxed type with reference counted clone semantics.

Implementations

impl ParamSpecVariant

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

Return the inner pointer to the underlying C value.

pub unsafe fn from_glib_ptr_borrow(ptr: &*mut GParamSpecVariant) -> &Self

Borrows the underlying C value.

impl ParamSpecVariant

pub fn upcast(self) -> ParamSpec

pub fn upcast_ref(&self) -> &ParamSpec

impl ParamSpecVariant

pub fn default_value(&self) -> Option<Variant>

impl ParamSpecVariant

pub fn type_(&self) -> Option<&VariantTy>

pub fn builder<'a>( name: &'a str, type_: &'a VariantTy, ) -> ParamSpecVariantBuilder<'a>

Methods from Deref<Target = ParamSpec>

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

Return the inner pointer to the underlying C value.

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

pub fn type_(&self) -> Type

pub fn is<T: StaticType>(&self) -> bool

pub fn value_type(&self) -> Type

pub fn value_is_valid(&self, value: &Value) -> bool

Available on crate feature v2_74 only.

pub fn owner_type(&self) -> Type

pub fn flags(&self) -> ParamFlags

pub fn blurb(&self) -> Option<&str>

Get the short description of a ParamSpec.

Returns

the short description of self. Get the short description of a ParamSpec.

Returns

the short description of self.

pub fn default_value(&self) -> &Value

Gets the default value of self as a pointer to a Value.

The Value will remain valid for the life of self.

Returns

a pointer to a Value which must not be modified Gets the default value of self as a pointer to a Value.

The Value will remain valid for the life of self.

Returns

a pointer to a Value which must not be modified

pub fn name<'a>(&self) -> &'a str

Get the name of a ParamSpec.

The name is always an “interned” string (as per g_intern_string()). This allows for pointer-value comparisons.

Returns

the name of self. Get the name of a ParamSpec.

The name is always an “interned” string (as per g_intern_string()). This allows for pointer-value comparisons.

Returns

the name of self.

pub fn name_quark(&self) -> Quark

Gets the GQuark for the name.

Returns

the GQuark for self->name. Gets the GQuark for the name.

Returns

the GQuark for self->name.

pub fn nick(&self) -> &str

Returns the nickname of this ParamSpec.

If this ParamSpec does not have a nickname, the nickname of its redirect target is returned if it has one. Otherwise, self.name() is returned. Get the nickname of a ParamSpec.

Returns

the nickname of self. Get the nickname of a ParamSpec.

Returns

the nickname of self.

pub fn redirect_target(&self) -> Option<ParamSpec>

If the paramspec redirects operations to another paramspec, returns that paramspec. Redirect is used typically for providing a new implementation of a property in a derived type while preserving all the properties from the parent type. Redirection is established by creating a property of type ParamSpecOverride. See g_object_class_override_property() for an example of the use of this capability.

Returns

paramspec to which requests on this paramspec should be redirected, or None if none. If the paramspec redirects operations to another paramspec, returns that paramspec. Redirect is used typically for providing a new implementation of a property in a derived type while preserving all the properties from the parent type. Redirection is established by creating a property of type ParamSpecOverride. See g_object_class_override_property() for an example of the use of this capability.

Returns

paramspec to which requests on this paramspec should be redirected, or None if none.

Trait Implementations

impl AsRef<ParamSpec> for ParamSpecVariant

fn as_ref(&self) -> &ParamSpec

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

impl Clone for ParamSpecVariant

fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the reference. Dropping the reference will decrement it again.

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

Performs copy-assignment from source.

impl Debug for ParamSpecVariant

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

Formats the value using the given formatter.

impl Deref for ParamSpecVariant

type Target = ParamSpec

The resulting type after dereferencing.

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

Dereferences the value.

impl Hash for ParamSpecVariant

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ParamSpecVariant

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ParamSpecVariant

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for ParamSpecVariant

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl StaticType for ParamSpecVariant

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for ParamSpecVariant

impl ParamSpecType for ParamSpecVariant

impl Send for ParamSpecVariant

impl StructuralPartialEq for ParamSpecVariant

impl Sync for ParamSpecVariant