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animatable: Deprecate and replace animate_property()

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The animate_property() method of the Animatable interface is far less
than optimal:

  • it has a direct reference to ClutterAnimation;
  • it has an interval decomposed as two values.

These issues tie the Animatable interface with the Animation object,
even though it's neither necessary nor future-proof.

Let's introduce a new method, interpolate_value(), which does not
reference ClutterAnimation and uses a ClutterInterval to express the
initial and final states.
This commit is contained in:
Emmanuele Bassi
2011-07-15 14:27:26 +01:00
parent 473f3817d4
commit 8b861cea8f
2 changed files with 69 additions and 9 deletions
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16
clutter/clutter-animatable.h
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@ -53,13 +53,15 @@ typedef struct _ClutterAnimatableIface ClutterAnimatableIface;
/**
* ClutterAnimatableIface:
* @animate_property: virtual function for custom interpolation of a
* property
* property. This virtual function is deprecated
* @find_property: virtual function for retrieving the #GParamSpec of
* an animatable property
* @get_initial_state: virtual function for retrieving the initial
* state of an animatable property
* @set_final_state: virtual function for setting the state of an
* animatable property
* @interpolate_value: virtual function for interpolating the progress
* of a property
*
* Base interface for #GObject<!-- -->s that can be animated by a
* a #ClutterAnimation.
@ -87,10 +89,16 @@ struct _ClutterAnimatableIface
void (* set_final_state) (ClutterAnimatable *animatable,
const gchar *property_name,
const GValue *value);
gboolean (* interpolate_value) (ClutterAnimatable *animatable,
const gchar *property_name,
ClutterInterval *interval,
gdouble progress,
GValue *value);
};
GType clutter_animatable_get_type (void) G_GNUC_CONST;
#ifndef CLUTTER_DISABLE_DEPRECATED
gboolean clutter_animatable_animate_property (ClutterAnimatable *animatable,
ClutterAnimation *animation,
const gchar *property_name,
@ -98,6 +106,7 @@ gboolean clutter_animatable_animate_property (ClutterAnimatable *animatable,
const GValue *final_value,
gdouble progress,
GValue *value);
#endif /* CLUTTER_DISABLE_DEPRECATED */
GParamSpec *clutter_animatable_find_property (ClutterAnimatable *animatable,
const gchar *property_name);
@ -107,6 +116,11 @@ void clutter_animatable_get_initial_state (ClutterAnimatable *animatable,
void clutter_animatable_set_final_state (ClutterAnimatable *animatable,
const gchar *property_name,
const GValue *value);
gboolean clutter_animatable_interpolate_value (ClutterAnimatable *animatable,
const gchar *property_name,
ClutterInterval *interval,
gdouble progress,
GValue *value);
G_END_DECLS