ClutterBehaviourOpacity: Clutter Reference Manual

ClutterBehaviourOpacity

ClutterBehaviourOpacity — A behaviour controlling opacity

Functions

ClutterBehaviour *	clutter_behaviour_opacity_new ()
void	clutter_behaviour_opacity_set_bounds ()
void	clutter_behaviour_opacity_get_bounds ()

Properties

guint	opacity-end	Read / Write
guint	opacity-start	Read / Write

Types and Values

struct	ClutterBehaviourOpacity
struct	ClutterBehaviourOpacityClass

Object Hierarchy

    GObject
    ╰── ClutterBehaviour
        ╰── ClutterBehaviourOpacity

Implemented Interfaces

ClutterBehaviourOpacity implements ClutterScriptable.

Description

ClutterBehaviourOpacity controls the opacity of a set of actors.

Functions

clutter_behaviour_opacity_new ()

ClutterBehaviour *
clutter_behaviour_opacity_new (ClutterAlpha *alpha,
                               guint8 opacity_start,
                               guint8 opacity_end);

clutter_behaviour_opacity_new has been deprecated since version 1.6 and should not be used in newly-written code.

Creates a new ClutterBehaviourOpacity object, driven by alpha which controls the opacity property of every actor, making it change in the interval between opacity_start and opacity_end .

If alpha is not NULL, the ClutterBehaviour will take ownership of the ClutterAlpha instance. In the case when alpha is NULL, it can be set later with clutter_behaviour_set_alpha().

Parameters

alpha	a ClutterAlpha instance, or `NULL`.	[allow-none]
opacity_start	minimum level of opacity
opacity_end	maximum level of opacity

Returns

the newly created ClutterBehaviourOpacity

Since: 0.2

clutter_behaviour_opacity_set_bounds ()

void
clutter_behaviour_opacity_set_bounds (ClutterBehaviourOpacity *behaviour,
                                      guint8 opacity_start,
                                      guint8 opacity_end);

clutter_behaviour_opacity_set_bounds has been deprecated since version 1.6 and should not be used in newly-written code.

Sets the initial and final levels of the opacity applied by behaviour on each actor it controls.

Parameters

behaviour	a ClutterBehaviourOpacity
opacity_start	minimum level of opacity
opacity_end	maximum level of opacity

Since: 0.6

clutter_behaviour_opacity_get_bounds ()

void
clutter_behaviour_opacity_get_bounds (ClutterBehaviourOpacity *behaviour,
                                      guint8 *opacity_start,
                                      guint8 *opacity_end);

clutter_behaviour_opacity_get_bounds has been deprecated since version 1.6 and should not be used in newly-written code.

Gets the initial and final levels of the opacity applied by behaviour on each actor it controls.

Parameters

behaviour	a ClutterBehaviourOpacity
opacity_start	return location for the minimum level of opacity, or `NULL`.	[out]
opacity_end	return location for the maximum level of opacity, or `NULL`.	[out]

Since: 0.6

Types and Values

struct ClutterBehaviourOpacity

struct ClutterBehaviourOpacity;

ClutterBehaviourOpacity has been deprecated since version 1.6 and should not be used in newly-written code.

Use clutter_actor_animate() and “opacity” instead.

The ClutterBehaviourOpacity structure contains only private data and should be accessed using the provided API

Since: 0.2

struct ClutterBehaviourOpacityClass

struct ClutterBehaviourOpacityClass {
};

ClutterBehaviourOpacityClass has been deprecated since version 1.6 and should not be used in newly-written code.

The ClutterBehaviourOpacityClass structure contains only private data

Since: 0.2

Property Details

The `“opacity-end”` property

  “opacity-end”              guint

Final opacity level of the behaviour.

ClutterBehaviourOpacity:opacity-end has been deprecated since version 1.6 and should not be used in newly-written code.

Flags: Read / Write

Allowed values: <= 255

Default value: 0

Since: 0.2

The `“opacity-start”` property

  “opacity-start”            guint

Initial opacity level of the behaviour.

ClutterBehaviourOpacity:opacity-start has been deprecated since version 1.6 and should not be used in newly-written code.

Flags: Read / Write

Allowed values: <= 255

Default value: 0

Since: 0.2