Alpha

Object Hierarchy:

public class Alpha : InitiallyUnowned, Scriptable

Base class for Alpha

Namespace: Clutter

Package: clutter-1.0

public double alpha { get; }
The alpha value as computed by the alpha function. The linear interval is 0.0 to 1.0, but the Alpha allows overshooting by one unit in each direction, so the valid interval is -1.0 to 2.0.
public ulong mode { construct set; get; }
The progress function logical id - either a value from the AnimationMode enumeration or a value returned by register_func.
public Timeline timeline { set; get; }
A Timeline instance used to drive the alpha function.

public static ulong register_closure (Closure closure)
Closure variant of register_func.
public static ulong register_func (AlphaFunc func)
Registers a global alpha function and returns its logical id to be used by set_mode or by Animation.

public Alpha ()
Creates a new Alpha instance. You must set a function to compute the alpha value using set_func and bind a Timeline object to the Alpha instance using set_timeline.
public Alpha.full (Timeline timeline, ulong mode)
Creates a new Alpha instance and sets the timeline and animation mode.
public Alpha.with_func (Timeline timeline, owned AlphaFunc func)
Creates a new Alpha instances and sets the timeline and the alpha function.

public double get_alpha ()
Query the current alpha value.
public ulong get_mode ()
Retrieves the AnimationMode used by alpha.
public weak Timeline get_timeline ()
Gets the Timeline bound to alpha.
public void set_closure (Closure closure)
Sets the Closure used to compute the alpha value at each frame of the Timeline bound to alpha.
public void set_func (owned AlphaFunc func)
Sets the AlphaFunc function used to compute the alpha value at each frame of the Timeline bound to alpha.
public void set_mode (ulong mode)
Sets the progress function of alpha using the symbolic value of mode, as taken by the AnimationMode enumeration or using the value returned by register_func.
public void set_timeline (Timeline timeline)
Binds alpha to timeline.