clutter-animatable

clutter-animatable — Interface for animatable classes

Functions

Description

ClutterAnimatable is an interface that allows a GObject class to control how a ClutterAnimation will animate a property.

Each ClutterAnimatable should implement the ClutterAnimatableIface.interpolate_property() virtual function of the interface to compute the animation state between two values of an interval depending on a progress factor, expressed as a floating point value.

If a ClutterAnimatable is animated by a ClutterAnimation instance, the ClutterAnimation will call clutter_animatable_interpolate_property() passing the name of the currently animated property; the values interval; and the progress factor. The ClutterAnimatable implementation should return the computed value for the animated property.

ClutterAnimatable is available since Clutter 1.0

Functions

clutter_animatable_animate_property ()

gboolean
clutter_animatable_animate_property (ClutterAnimatable *animatable,
                                     ClutterAnimation *animation,
                                     const gchar *property_name,
                                     const GValue *initial_value,
                                     const GValue *final_value,
                                     gdouble progress,
                                     GValue *value);

clutter_animatable_animate_property has been deprecated since version 1.8 and should not be used in newly-written code.

Use clutter_animatable_interpolate_value() instead

Calls the animate_property() virtual function for animatable .

The initial_value and final_value GValues must contain the same type; value must have been initialized to the same type of initial_value and final_value .

All implementation of the ClutterAnimatable interface must implement this function.

Parameters

animatable

a ClutterAnimatable

 

animation

a ClutterAnimation

 

property_name

the name of the animated property

 

initial_value

the initial value of the animation interval

 

final_value

the final value of the animation interval

 

progress

the progress factor

 

value

return location for the animation value

 

Returns

TRUE if the value has been validated and can be applied to the ClutterAnimatable, and FALSE otherwise

Since: 1.0