Module qtjambi
Package io.qt.core

Class QObject.QFloatProperty

java.lang.Object
io.qt.QtObject
io.qt.core.QUntypedPropertyData
io.qt.core.QFloatPropertyData
io.qt.core.QObject.QFloatProperty
All Implemented Interfaces:
QtObjectInterface
Enclosing class:
QObject
public final class QObject.QFloatProperty extends QFloatPropertyData
QFloatProperty is primitive-typed version of QProperty<Float>.
See Also:

  • Constructor Details

    • QFloatProperty

      public QFloatProperty()
      Constructs a float-typed property.

    • QFloatProperty

      public QFloatProperty(float initialValue)
      Constructs a float-typed property with the provided initialValue.
      Parameters:
      initialValue -

    • QFloatProperty

      public QFloatProperty(QFloatPropertyBinding binding)
      Constructs a float-typed property with the provided binding.
      Parameters:
      binding -

    • QFloatProperty

      public QFloatProperty(QPropertyBinding<@QtPrimitiveType Float> binding)
      Constructs a float-typed property with the provided binding.
      Parameters:
      binding -

    • QFloatProperty

      public QFloatProperty(QtUtilities.FloatSupplier functor)

      Constructs a float-typed property bound to the provided functor.

      Parameters:
      functor -

  • Method Details

    • value

      @QtUninvokable public final float value()
      Returns the value of the property. This may evaluate a binding expression that is tied to this property, before returning the value.
      Returns:
      value

    • setValue

      @QtUninvokable public final void setValue(float newValue)

      Assigns newValue to this property and removes the property's associated binding, if present.

      Parameters:
      newValue -

    • setBinding

      @QtUninvokable public final QFloatPropertyBinding setBinding(QFloatPropertyBinding newBinding)

      Associates the value of this property with the provided newBinding expression and returns the previously associated binding.

      The first time the property value is read, the binding is evaluated. Whenever a dependency of the binding changes, the binding will be re-evaluated the next time the value of this property is read.

      Parameters:
      newBinding -
      Returns:
      oldBinding

    • setBinding

      @QtUninvokable public final QFloatPropertyBinding setBinding(QPropertyBinding<@QtPrimitiveType Float> newBinding)

      Associates the value of this property with the provided newBinding expression and returns the previously associated binding.

      The binding's value type (QUntypedPropertyBinding.valueMetaType()) has to be float, otherwise the property remains unchanged.

      The first time the property value is read, the binding is evaluated. Whenever a dependency of the binding changes, the binding will be re-evaluated the next time the value of this property is read.

      Parameters:
      newBinding -
      Returns:
      oldBinding

    • setBinding

      @QtUninvokable public final boolean setBinding(QUntypedPropertyBinding newBinding)

      Associates the value of this property with the provided newBinding expression.

      The binding's value type (QUntypedPropertyBinding.valueMetaType()) has to be float, otherwise the property remains unchanged and the method returns false.

      The first time the property value is read, the binding is evaluated. Whenever a dependency of the binding changes, the binding will be re-evaluated the next time the value of this property is read.

      Returns true if the type of this property is the same as the type the binding function returns; false otherwise.

      Parameters:
      newBinding -
      Returns:
      true if types match, false otherwise.

    • setBinding

      @QtUninvokable public final QFloatPropertyBinding setBinding(QtUtilities.FloatSupplier functor)

      Associates the value of this property with the provided functor and returns the previously associated binding.

      The first time the property value is read, the binding is evaluated by invoking QtUtilities.FloatSupplier.getAsFloat() of functor. Whenever a dependency of the binding changes, the binding will be re-evaluated the next time the value of this property is read.

      Parameters:
      functor -
      Returns:
      oldBinding

    • hasBinding

      @QtUninvokable public final boolean hasBinding()
      Checks if the property has a binding.
      Returns:
      true if the property has a binding, false otherwise.

    • binding

      @QtUninvokable public final QFloatPropertyBinding binding()
      Returns the binding expression that is associated with this property. A default constructed QFloatPropertyBinding will be returned if no such association exists.
      Returns:
      binding

    • takeBinding

      @QtUninvokable public final QFloatPropertyBinding takeBinding()

      Disassociates the binding expression from this property and returns it.

      After calling this function, the value of the property will only change if you assign a new value to it, or when a new binding is set.

      Returns:
      the removed binding

    • onValueChanged

      @QtUninvokable public final QPropertyChangeHandler onValueChanged(Runnable f)

      Registers the given functor f as a callback that shall be called whenever the value of the property changes.

      The returned property change handler object keeps track of the registration. As long as the change handler is alive i.e. as long as a reference to the QPropertyChangeHandler instance exists, the callback remains installed. When the garbage collection deletes the instance, the callback is de-registered.

      Parameters:
      f -
      Returns:
      property change handler
      See Also:

    • subscribe

      @QtUninvokable public final QPropertyChangeHandler subscribe(Runnable f)
      Subscribes the given functor f as a callback that is called immediately and whenever the value of the property changes in the future.
      Parameters:
      f -
      Returns:
      property change handler
      See Also:

    • addNotifier

      @QtUninvokable public final QPropertyNotifier addNotifier(Runnable f)

      Registers the given functor f as a callback that shall be called whenever the value of the bindable changes.

      The returned property notifier object keeps track of the registration. As long as the notifier is alive i.e. as long as a reference to the QPropertyNotifier instance exists, the callback remains installed. When the garbage collection deletes the instance, the callback is de-registered.

      Parameters:
      f -
      Returns:
      property notifier
      See Also:

    • notifyProperty

      @QtUninvokable public final void notifyProperty()
      Programmatically signals a change of the property. Any binding which depend on it will be notified, and if the property has a signal, it will be emitted.

      See QObjectBindableProperty::notify()