Struct gtk4::builders::ConstraintBuilder

pub struct ConstraintBuilder { /* private fields */ }

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(self, source: &impl IsA<ConstraintTarget>) -> 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(self, target: &impl IsA<ConstraintTarget>) -> 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.