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2006-12-08 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-behaviour.h: Add a function prototype for the foreach function: we need something more specific than GFunc; add clutter_behaviour_get_actors(), used to get a list of the actors. * clutter/clutter-behaviour.c: Add debugging notes; add a warning for behaviour implementations missing the alpha_notify vfunc; add api documentation * clutter/clutter-behaviour-opacity.c: * clutter/clutter-behaviour-path.c: * clutter/clutter-behaviour-scale.c: Reimplement the alpha_notify functions using the new foreach function and, where possible, by directly iterating on the actors: this shaves off the number of recalculations of the property/alpha values, and the number of functions.
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ChangeLog
20
ChangeLog
@ -1,3 +1,23 @@
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2006-12-08 Emmanuele Bassi <ebassi@openedhand.com>
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* clutter/clutter-behaviour.h: Add a function prototype
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for the foreach function: we need something more specific
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than GFunc; add clutter_behaviour_get_actors(), used to
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get a list of the actors.
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* clutter/clutter-behaviour.c: Add debugging notes; add
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a warning for behaviour implementations missing the
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alpha_notify vfunc; add api documentation
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* clutter/clutter-behaviour-opacity.c:
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* clutter/clutter-behaviour-path.c:
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* clutter/clutter-behaviour-scale.c: Reimplement the
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alpha_notify functions using the new foreach function
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and, where possible, by directly iterating on the
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actors: this shaves off the number of recalculations
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of the property/alpha values, and the number of
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functions.
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2006-12-05 Emmanuele Bassi <ebassi@openedhand.com>
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* clutter/clutter-rectangle.c: Forgot to set the
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@ -78,37 +78,36 @@ enum
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PROP_OPACITY_END
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};
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static void
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opacity_frame_foreach (ClutterActor *actor,
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ClutterBehaviourOpacity *behave)
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{
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guint32 alpha;
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guint8 opacity;
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ClutterBehaviourOpacityPrivate *priv;
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ClutterBehaviour *_behave;
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priv = CLUTTER_BEHAVIOUR_OPACITY_GET_PRIVATE (behave);
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_behave = CLUTTER_BEHAVIOUR (behave);
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alpha = clutter_alpha_get_alpha (clutter_behaviour_get_alpha (_behave));
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opacity = (alpha * (priv->opacity_end - priv->opacity_start))
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/ CLUTTER_ALPHA_MAX_ALPHA;
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opacity += priv->opacity_start;
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CLUTTER_NOTE (BEHAVIOUR, "alpha %i opacity %i\n", alpha, opacity);
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clutter_actor_set_opacity (actor, opacity);
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}
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static void
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clutter_behaviour_alpha_notify (ClutterBehaviour *behave,
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guint32 alpha_value)
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{
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clutter_behaviour_actors_foreach (behave,
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(GFunc) opacity_frame_foreach,
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CLUTTER_BEHAVIOUR_OPACITY (behave));
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GSList *actors, *l;
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guint8 opacity;
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ClutterBehaviourOpacityPrivate *priv;
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priv = CLUTTER_BEHAVIOUR_OPACITY (behave)->priv;
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actors = clutter_behaviour_get_actors (behave);
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if (!actors)
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return;
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opacity = alpha_value
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* (priv->opacity_end - priv->opacity_start)
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/ CLUTTER_ALPHA_MAX_ALPHA;
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CLUTTER_NOTE (BEHAVIOUR, "alpha: %i, opacity: %i",
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alpha_value,
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opacity);
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for (l = actors; l; l = l->next)
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{
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ClutterActor *actor = l->data;
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clutter_actor_set_opacity (actor, opacity);
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}
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g_slist_free (actors);
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}
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static void
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@ -184,9 +184,12 @@ path_total_length (ClutterBehaviourPath *behave)
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}
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static void
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actor_apply_knot_foreach (ClutterActor *actor,
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ClutterKnot *knot)
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actor_apply_knot_foreach (ClutterBehaviour *behaviour,
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ClutterActor *actor,
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gpointer data)
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{
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ClutterKnot *knot = data;
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clutter_actor_set_position (actor, knot->x, knot->y);
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}
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@ -217,7 +220,7 @@ path_alpha_to_position (ClutterBehaviourPath *behave,
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if (offset == 0)
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{
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clutter_behaviour_actors_foreach (behaviour,
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(GFunc) actor_apply_knot_foreach,
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actor_apply_knot_foreach,
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priv->knots->data);
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g_signal_emit (behave, path_signals[KNOT_REACHED], 0,
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@ -245,7 +248,7 @@ path_alpha_to_position (ClutterBehaviourPath *behave,
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interpolate (knot, next, &new, t);
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clutter_behaviour_actors_foreach (behaviour,
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(GFunc)actor_apply_knot_foreach,
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actor_apply_knot_foreach,
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&new);
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g_signal_emit (behave, path_signals[KNOT_REACHED], 0, &new);
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@ -81,30 +81,15 @@ enum
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};
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static void
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scale_frame_foreach (ClutterActor *actor,
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ClutterBehaviourScale *behave)
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scale_frame_foreach (ClutterBehaviour *behaviour,
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ClutterActor *actor,
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gpointer data)
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{
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ClutterFixed scale, factor;
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guint32 alpha;
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ClutterBehaviourScalePrivate *priv;
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ClutterBehaviour *_behave;
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gint sw, sh, w, h;
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ClutterBehaviourScalePrivate *priv;
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gint sw, sh, w, h;
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guint scale = GPOINTER_TO_UINT (data);
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priv = CLUTTER_BEHAVIOUR_SCALE_GET_PRIVATE (behave);
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_behave = CLUTTER_BEHAVIOUR (behave);
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alpha = clutter_alpha_get_alpha (clutter_behaviour_get_alpha (_behave));
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/* FIXME: use all fixed if possible
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factor = CLUTTER_FIXED_DIV(CLUTTER_INT_TO_FIXED(alpha/2),
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CLUTTER_INT_TO_FIXED(CLUTTER_ALPHA_MAX_ALPHA/2));
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*/
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factor = CLUTTER_FLOAT_TO_FIXED ((gdouble) alpha / CLUTTER_ALPHA_MAX_ALPHA);
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scale = CLUTTER_FIXED_MUL (factor, (priv->scale_end - priv->scale_begin));
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scale += priv->scale_begin;
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priv = CLUTTER_BEHAVIOUR_SCALE (behaviour)->priv;
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clutter_actor_set_scalex (actor, scale, scale);
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@ -143,9 +128,24 @@ static void
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clutter_behaviour_scale_alpha_notify (ClutterBehaviour *behave,
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guint32 alpha_value)
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{
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ClutterFixed scale, factor;
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ClutterBehaviourScalePrivate *priv;
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priv = CLUTTER_BEHAVIOUR_SCALE (behave)->priv;
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/* FIXME: use all fixed if possible
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factor = CLUTTER_FIXED_DIV(CLUTTER_INT_TO_FIXED(alpha/2),
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CLUTTER_INT_TO_FIXED(CLUTTER_ALPHA_MAX_ALPHA/2));
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*/
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factor = CLUTTER_FLOAT_TO_FIXED ((gdouble) alpha_value / CLUTTER_ALPHA_MAX_ALPHA);
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scale = CLUTTER_FIXED_MUL (factor, (priv->scale_end - priv->scale_begin));
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scale += priv->scale_begin;
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clutter_behaviour_actors_foreach (behave,
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(GFunc) scale_frame_foreach,
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CLUTTER_BEHAVIOUR_SCALE (behave));
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scale_frame_foreach,
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GUINT_TO_POINTER (scale));
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}
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static void
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@ -144,6 +144,13 @@ clutter_behaviour_get_property (GObject *object,
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}
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}
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static void
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clutter_behaviour_alpha_notify_unimplemented (ClutterBehaviour *behaviour,
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guint32 alpha_value)
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{
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g_warning ("ClutterBehaviourClass::alpha_notify not implemented for `%s'",
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g_type_name (G_TYPE_FROM_INSTANCE (behaviour)));
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}
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static void
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clutter_behaviour_class_init (ClutterBehaviourClass *klass)
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@ -163,6 +170,8 @@ clutter_behaviour_class_init (ClutterBehaviourClass *klass)
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G_PARAM_CONSTRUCT |
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CLUTTER_PARAM_READWRITE));
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klass->alpha_notify = clutter_behaviour_alpha_notify_unimplemented;
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g_type_class_add_private (klass, sizeof (ClutterBehaviourPrivate));
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}
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@ -175,6 +184,16 @@ clutter_behaviour_init (ClutterBehaviour *self)
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}
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/**
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* clutter_behaviour_apply:
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* @behave: a #ClutterBehaviour
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* @actor: a #ClutterActor
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*
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* Applies @behave to @actor. This function adds a reference on
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* the actor.
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*
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* Since: 0.2
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*/
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void
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clutter_behaviour_apply (ClutterBehaviour *behave,
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ClutterActor *actor)
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@ -195,6 +214,16 @@ clutter_behaviour_apply (ClutterBehaviour *behave,
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behave->priv->actors = g_slist_prepend (behave->priv->actors, actor);
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}
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/**
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* clutter_behaviour_remove:
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* @behave: a #ClutterBehaviour
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* @actor: a #ClutterActor
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*
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* Removes @actor from the list of #ClutterActor<!-- -->s to which
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* @behave applies. This function removes a reference on the actor.
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*
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* Since: 0.2
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*/
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void
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clutter_behaviour_remove (ClutterBehaviour *behave,
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ClutterActor *actor)
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@ -215,17 +244,47 @@ clutter_behaviour_remove (ClutterBehaviour *behave,
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behave->priv->actors = g_slist_remove (behave->priv->actors, actor);
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}
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/**
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* clutter_behaviour_actors_foreach:
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* @behave: a #ClutterBehaviour
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* @func: a function called for each actor
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* @data: optional data to be passed to the function, or %NULL
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*
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* Calls @func for every actor driven by @behave.
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*
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* Since: 0.2
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*/
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void
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clutter_behaviour_actors_foreach (ClutterBehaviour *behave,
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GFunc func,
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gpointer userdata)
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clutter_behaviour_actors_foreach (ClutterBehaviour *behave,
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ClutterBehaviourForeachFunc func,
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gpointer data)
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{
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GSList *l;
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g_return_if_fail (CLUTTER_IS_BEHAVIOUR (behave));
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g_return_if_fail (func != NULL);
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g_slist_foreach (behave->priv->actors, func, userdata);
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for (l = behave->priv->actors; l != NULL; l = l->next)
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{
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ClutterActor *actor = l->data;
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g_assert (CLUTTER_IS_ACTOR (actor));
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func (behave, actor, data);
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}
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}
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/**
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* clutter_behaviour_get_alpha:
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* @behave: a #ClutterBehaviour
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*
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* Retrieves the #ClutterAlpha object bound to @behave.
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*
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* Return value: a #ClutterAlpha object, or %NULL if no alpha
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* object has been bound to this behaviour.
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*
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* Since: 0.2
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*/
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ClutterAlpha*
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clutter_behaviour_get_alpha (ClutterBehaviour *behave)
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{
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@ -243,16 +302,36 @@ notify_cb (GObject *object,
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klass = CLUTTER_BEHAVIOUR_GET_CLASS (behave);
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CLUTTER_NOTE (BEHAVIOUR, "notify::alpha");
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if (klass->alpha_notify)
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{
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guint32 alpha_value;
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alpha_value = clutter_alpha_get_alpha (behave->priv->alpha);
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CLUTTER_NOTE (BEHAVIOUR, "calling %s::alpha_notify (%p, %d)",
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g_type_name (G_TYPE_FROM_CLASS (klass)),
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behave, alpha_value);
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klass->alpha_notify (behave, alpha_value);
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}
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}
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/**
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* clutter_behaviour_set_alpha:
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* @behave: a #ClutterBehaviour
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* @alpha: a #ClutterAlpha or %NULL to unset a previously set alpha
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*
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* Binds @alpha to a #ClutterBehaviour. The #ClutterAlpha object
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* is what makes a behaviour work: for each tick of the timeline
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* used by #ClutterAlpha a new value of the alpha parameter is
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* computed by the alpha function; the value should be used by
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* the #ClutterBehaviour to update one or more properties of the
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* actors to which the behaviour applies.
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*
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* Since: 0.2
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*/
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void
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clutter_behaviour_set_alpha (ClutterBehaviour *behave,
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ClutterAlpha *alpha)
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@ -266,12 +345,17 @@ clutter_behaviour_set_alpha (ClutterBehaviour *behave,
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if (priv->notify_id)
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{
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CLUTTER_NOTE (BEHAVIOUR, "removing previous notify-id (%d)",
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priv->notify_id);
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g_signal_handler_disconnect (priv->alpha, priv->notify_id);
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priv->notify_id = 0;
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}
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if (priv->alpha)
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{
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CLUTTER_NOTE (BEHAVIOUR, "removing previous alpha object");
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g_object_unref (priv->alpha);
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priv->alpha = NULL;
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}
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@ -284,5 +368,33 @@ clutter_behaviour_set_alpha (ClutterBehaviour *behave,
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priv->notify_id = g_signal_connect (priv->alpha, "notify::alpha",
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G_CALLBACK(notify_cb),
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behave);
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CLUTTER_NOTE (BEHAVIOUR, "setting new alpha object (%p, notify:%d)",
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priv->alpha, priv->notify_id);
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}
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}
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/**
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* clutter_behaviour_get_actors:
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* @behaviour: a #ClutterBehaviour
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*
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* Retrieves all the actors to which @behaviour applies.
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*
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* Return value: a list of actors. You should free the returned list
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* with g_slist_free() when finished using it.
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*
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* Since: 0.2
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*/
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GSList *
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clutter_behaviour_get_actors (ClutterBehaviour *behaviour)
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{
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GSList *retval, *l;
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g_return_val_if_fail (CLUTTER_BEHAVIOUR (behaviour), NULL);
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retval = NULL;
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for (l = behaviour->priv->actors; l != NULL; l = l->next)
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retval = g_slist_prepend (retval, l->data);
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return g_slist_reverse (retval);
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}
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@ -58,7 +58,20 @@ G_BEGIN_DECLS
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typedef struct _ClutterBehaviour ClutterBehaviour;
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typedef struct _ClutterBehaviourPrivate ClutterBehaviourPrivate;
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typedef struct _ClutterBehaviourClass ClutterBehaviourClass;
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/**
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* ClutterBehaviourFunction:
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* @behaviour: the #ClutterBehaviour
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* @actor: an actor driven by @behaviour
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* @data: optional data passed to the function
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*
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* This function is passed to clutter_behaviour_foreach_actor() and
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* will be called for each actor driven by @behaviour.
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*/
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typedef void (*ClutterBehaviourForeachFunc) (ClutterBehaviour *behaviour,
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ClutterActor *actor,
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gpointer data);
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struct _ClutterBehaviour
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{
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/*< private >*/
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@ -85,16 +98,17 @@ struct _ClutterBehaviourClass
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GType clutter_behaviour_get_type (void) G_GNUC_CONST;
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void clutter_behaviour_apply (ClutterBehaviour *behave,
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ClutterActor *actor);
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void clutter_behaviour_remove (ClutterBehaviour *behave,
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ClutterActor *actor);
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void clutter_behaviour_actors_foreach (ClutterBehaviour *behave,
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GFunc func,
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gpointer data);
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ClutterAlpha *clutter_behaviour_get_alpha (ClutterBehaviour *behave);
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void clutter_behaviour_set_alpha (ClutterBehaviour *behave,
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ClutterAlpha *alpha);
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void clutter_behaviour_apply (ClutterBehaviour *behave,
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ClutterActor *actor);
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void clutter_behaviour_remove (ClutterBehaviour *behave,
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ClutterActor *actor);
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void clutter_behaviour_actors_foreach (ClutterBehaviour *behave,
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ClutterBehaviourForeachFunc func,
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gpointer data);
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GSList * clutter_behaviour_get_actors (ClutterBehaviour *behave);
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ClutterAlpha *clutter_behaviour_get_alpha (ClutterBehaviour *behave);
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void clutter_behaviour_set_alpha (ClutterBehaviour *behave,
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ClutterAlpha *alpha);
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G_END_DECLS
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|
@ -7,7 +7,9 @@
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#define CLUTTER_VERSION @CLUTTER_VERSION@
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#define CLUTTER_VERSION_S "@CLUTTER_VERSION@"
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#define CLUTTER_VERSION_HEX 0x@CLUTTER_MAJOR_VERSION@0@CLUTTER_MINOR_VERSION@0@CLUTTER_MICRO_VERSION@
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#define CLUTTER_VERSION_HEX ((CLUTTER_MAJOR_VERSION << 24) | \
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(CLUTTER_MINOR_VERSION << 16) | \
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(CLUTTER_MICRO_VERSION << 8))
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#define CLUTTER_CHECK_VERSION(major,minor,micro) \
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(CLUTTER_MAJOR_VERSION > (major) || \
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|
@ -68,7 +68,9 @@ ClutterBehaviour
|
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ClutterBehaviourClass
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clutter_behaviour_apply
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clutter_behaviour_remove
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ClutterBehaviourForeachFunc
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clutter_behaviour_actors_foreach
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clutter_behaviour_get_actors
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clutter_behaviour_get_alpha
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clutter_behaviour_set_alpha
|
||||
<SUBSECTION Standard>
|
||||
|
@ -60,6 +60,16 @@ ClutterBehaviour
|
||||
@actor:
|
||||
|
||||
|
||||
<!-- ##### USER_FUNCTION ClutterBehaviourForeachFunc ##### -->
|
||||
<para>
|
||||
|
||||
</para>
|
||||
|
||||
@behaviour:
|
||||
@actor:
|
||||
@data:
|
||||
|
||||
|
||||
<!-- ##### FUNCTION clutter_behaviour_actors_foreach ##### -->
|
||||
<para>
|
||||
|
||||
@ -70,6 +80,15 @@ ClutterBehaviour
|
||||
@data:
|
||||
|
||||
|
||||
<!-- ##### FUNCTION clutter_behaviour_get_actors ##### -->
|
||||
<para>
|
||||
|
||||
</para>
|
||||
|
||||
@behave:
|
||||
@Returns:
|
||||
|
||||
|
||||
<!-- ##### FUNCTION clutter_behaviour_get_alpha ##### -->
|
||||
<para>
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user