Class: Gtk::Constraint

Inherits:

Object

• Object
• Gtk::Constraint

Defined in:

(unknown)

Instance Method Summary

• #constant ⇒ Float

  The constant value to be added to the [propertyGtk.Constraint:source-attribute].

• #constant=(constant) ⇒ Float

  The constant value to be added to the [propertyGtk.Constraint:source-attribute].

• #initialize(target, target_attribute, relation, constant, strength) ⇒ Gtk::Constraint constructor

  Creates a new constraint representing a relation between a layout attribute on a target and a constant value.

• #is_attached ⇒ Boolean

  Checks whether the constraint is attached to a [classGtk.ConstraintLayout], and it is contributing to the layout.

• #is_constant ⇒ Boolean

  Checks whether the constraint describes a relation between an attribute on the [propertyGtk.Constraint:target] and a constant value.

• #is_required ⇒ Boolean

  Checks whether the constraint is a required relation for solving the constraint layout.

• #multiplier ⇒ Float

  The multiplication factor to be applied to the [propertyGtk.Constraint:source-attribute].

• #multiplier=(multiplier) ⇒ Float

  The multiplication factor to be applied to the [propertyGtk.Constraint:source-attribute].

• #relation ⇒ Gtk::ConstraintRelation

  The order relation between the terms of the constraint.

• #relation=(relation) ⇒ Gtk::ConstraintRelation

  The order relation between the terms of the constraint.

• #source ⇒ Gtk::ConstraintTarget

  The source of the constraint.

• #source=(source) ⇒ Gtk::ConstraintTarget

  The source of the constraint.

• #source_attribute ⇒ Gtk::ConstraintAttribute

  The attribute of the [propertyGtk.Constraint:source] read by the constraint.

• #source_attribute=(source_attribute) ⇒ Gtk::ConstraintAttribute

  The attribute of the [propertyGtk.Constraint:source] read by the constraint.

• #strength ⇒ Integer

  The strength of the constraint.

• #strength=(strength) ⇒ Integer

  The strength of the constraint.

• #target ⇒ Gtk::ConstraintTarget

  The target of the constraint.

• #target=(target) ⇒ Gtk::ConstraintTarget

  The target of the constraint.

• #target_attribute ⇒ Gtk::ConstraintAttribute

  The attribute of the [propertyGtk.Constraint:target] set by the constraint.

• #target_attribute=(target_attribute) ⇒ Gtk::ConstraintAttribute

  The attribute of the [propertyGtk.Constraint:target] set by the constraint.

Constructor Details

#initialize(target, target_attribute, relation, constant, strength) ⇒ Gtk::Constraint

Creates a new constraint representing a relation between a layout attribute on a target and a constant value.

Parameters:

• target (Gtk::ConstraintTarget) —

  a the target of the constraint

• target_attribute (Gtk::ConstraintAttribute) —

  the attribute of target to be set

• relation (Gtk::ConstraintRelation) —

  the relation equivalence between target_attribute and constant

• constant (Float) —

  a constant factor to be set on target_attribute

• strength (Integer) —

  the strength of the constraint

Instance Method Details

#constant ⇒ Float

The constant value to be added to the [propertyGtk.Constraint:source-attribute].

Returns:

• (Float) —

  constant

#constant=(constant) ⇒ Float

The constant value to be added to the [propertyGtk.Constraint:source-attribute].

Parameters:

• constant (Float)

Returns:

• (Float) —

  constant

• (Float) —

  constant

#is_attached ⇒ Boolean

Checks whether the constraint is attached to a [classGtk.ConstraintLayout], and it is contributing to the layout.

Returns:

• (Boolean) —

  TRUE if the constraint is attached

#is_constant ⇒ Boolean

Checks whether the constraint describes a relation between an attribute on the [propertyGtk.Constraint:target] and a constant value.

Returns:

• (Boolean) —

  TRUE if the constraint is a constant relation

#is_required ⇒ Boolean

Checks whether the constraint is a required relation for solving the constraint layout.

Returns:

• (Boolean) —

  true if the constraint is required

#multiplier ⇒ Float

The multiplication factor to be applied to the [propertyGtk.Constraint:source-attribute].

Returns:

• (Float) —

  multiplier

#multiplier=(multiplier) ⇒ Float

The multiplication factor to be applied to the [propertyGtk.Constraint:source-attribute].

Parameters:

• multiplier (Float)

Returns:

• (Float) —

  multiplier

• (Float) —

  multiplier

#relation ⇒ Gtk::ConstraintRelation

The order relation between the terms of the constraint.

Returns:

• (Gtk::ConstraintRelation) —

  relation

#relation=(relation) ⇒ Gtk::ConstraintRelation

The order relation between the terms of the constraint.

Parameters:

• relation (Gtk::ConstraintRelation)

Returns:

• (Gtk::ConstraintRelation) —

  relation

• (Gtk::ConstraintRelation) —

  relation

#source ⇒ Gtk::ConstraintTarget

The source of the constraint.

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

Returns:

• (Gtk::ConstraintTarget) —

  source

#source=(source) ⇒ Gtk::ConstraintTarget

The source of the constraint.

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

Parameters:

• source (Gtk::ConstraintTarget)

Returns:

• (Gtk::ConstraintTarget) —

  source

• (Gtk::ConstraintTarget) —

  source

#source_attribute ⇒ Gtk::ConstraintAttribute

The attribute of the [propertyGtk.Constraint:source] read by the constraint.

Returns:

• (Gtk::ConstraintAttribute) —

  source-attribute

#source_attribute=(source_attribute) ⇒ Gtk::ConstraintAttribute

The attribute of the [propertyGtk.Constraint:source] read by the constraint.

Parameters:

• source_attribute (Gtk::ConstraintAttribute)

Returns:

• (Gtk::ConstraintAttribute) —

  source-attribute

• (Gtk::ConstraintAttribute) —

  source-attribute

#strength ⇒ Integer

The strength of the constraint.

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

Returns:

• (Integer) —

  strength

#strength=(strength) ⇒ Integer

The strength of the constraint.

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

Parameters:

• strength (Integer)

Returns:

• (Integer) —

  strength

• (Integer) —

  strength

#target ⇒ Gtk::ConstraintTarget

The target of the constraint.

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

Returns:

• (Gtk::ConstraintTarget) —

  target

#target=(target) ⇒ Gtk::ConstraintTarget

The target of the constraint.

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

Parameters:

• target (Gtk::ConstraintTarget)

Returns:

• (Gtk::ConstraintTarget) —

  target

• (Gtk::ConstraintTarget) —

  target

#target_attribute ⇒ Gtk::ConstraintAttribute

The attribute of the [propertyGtk.Constraint:target] set by the constraint.

Returns:

• (Gtk::ConstraintAttribute) —

  target-attribute

#target_attribute=(target_attribute) ⇒ Gtk::ConstraintAttribute

The attribute of the [propertyGtk.Constraint:target] set by the constraint.

Parameters:

• target_attribute (Gtk::ConstraintAttribute)

Returns:

• (Gtk::ConstraintAttribute) —

  target-attribute

• (Gtk::ConstraintAttribute) —

  target-attribute