Class: Gtk::ClosureExpression

Inherits:

Expression

• Object
• Expression
• Gtk::ClosureExpression

Defined in:

(unknown)

Overview

An expression using a custom GClosure to compute the value from its parameters.

Instance Method Summary

• #initialize(value_type, closure, n_params, params) ⇒ Gtk::ClosureExpression constructor

  Creates a GtkExpression that calls closure when it is evaluated.

Methods inherited from Expression

#bind, #evaluate, #is_static, #ref, #unref, #value_type, #watch

Constructor Details

#initialize(value_type, closure, n_params, params) ⇒ Gtk::ClosureExpression

Creates a GtkExpression that calls closure when it is evaluated.

closure is called with the this object and the results of evaluating the params expressions.

Parameters:

• value_type (GLib::Type) —

  the type of the value that this expression evaluates to

• closure (GObject::Closure) —

  closure to call when evaluating this expression. If closure is floating, it is adopted

• n_params (Integer) —

  the number of params needed for evaluating closure

• params (Array<Gtk::Expression>) —

  expressions for each parameter