Struct gtk4::ConstraintBuilder

pub struct ConstraintBuilder { /* fields omitted */ }

A builder-pattern type to construct Constraint objects.

Implementations

impl ConstraintBuilder

pub fn new() -> Self

Create a new ConstraintBuilder.

pub fn build(self) -> Constraint

Build the Constraint.

pub fn constant(self, constant: f64) -> Self

The constant value to be added to the property::Constraint::source-attribute.

pub fn multiplier(self, multiplier: f64) -> Self

The multiplication factor to be applied to the property::Constraint::source-attribute.

pub fn relation(self, relation: ConstraintRelation) -> Self

The order relation between the terms of the constraint.

pub fn source<P: IsA<ConstraintTarget>>(self, source: &P) -> Self

The source of the constraint.

The constraint will set the property::Constraint::target-attribute property of the target using the property::Constraint::source-attribute property of the source.

pub fn source_attribute(self, source_attribute: ConstraintAttribute) -> Self

The attribute of the property::Constraint::source read by the constraint.

pub fn strength(self, strength: i32) -> Self

The strength of the constraint.

The strength can be expressed either using one of the symbolic values of the ConstraintStrength enumeration, or any positive integer value.

pub fn target<P: IsA<ConstraintTarget>>(self, target: &P) -> Self

The target of the constraint.

The constraint will set the property::Constraint::target-attribute property of the target using the property::Constraint::source-attribute property of the source widget.

pub fn target_attribute(self, target_attribute: ConstraintAttribute) -> Self

The attribute of the property::Constraint::target set by the constraint.

Trait Implementations

impl Clone for ConstraintBuilder

fn clone(&self) -> ConstraintBuilder

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for ConstraintBuilder

fn default() -> ConstraintBuilder

Returns the “default value” for a type.