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animation: Check for value transformability

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We should not just check for compatibility, but also for the ability to
transform a GValue of type A into another of type A'.

Usually compatibility is enough, especially if types can be
introspected beforehand; some times, though, we also need to check for
transformability as a type can provide the transformation functions
necessary for the operation.
This commit is contained in:
Emmanuele Bassi 2010-01-22 21:33:28 +00:00
parent 4695383281
commit 94249efff7
1 changed files with 20 additions and 9 deletions
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29
clutter/clutter-animation.c
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@ -629,6 +629,7 @@ clutter_animation_validate_bind (ClutterAnimation *animation,
ClutterAnimationPrivate *priv;
GObjectClass *klass;
GParamSpec *pspec;
GType pspec_type;
priv = animation->priv;
@ -667,14 +668,17 @@ clutter_animation_validate_bind (ClutterAnimation *animation,
return NULL;
}
if (!g_value_type_compatible (G_PARAM_SPEC_VALUE_TYPE (pspec), argtype))
pspec_type = G_PARAM_SPEC_VALUE_TYPE (pspec);
if (!g_value_type_compatible (argtype, pspec_type) ||
!g_value_type_transformable (argtype, pspec_type))
{
g_warning ("Cannot bind property '%s': the interval value of "
"type '%s' is not compatible with the property value "
"of type '%s'",
property_name,
g_type_name (argtype),
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
g_type_name (pspec_type));
return NULL;
}
@ -846,6 +850,7 @@ clutter_animation_update_interval (ClutterAnimation *animation,
ClutterAnimationPrivate *priv;
GObjectClass *klass;
GParamSpec *pspec;
GType pspec_type, int_type;
g_return_if_fail (CLUTTER_IS_ANIMATION (animation));
g_return_if_fail (property_name != NULL);
@ -872,15 +877,18 @@ clutter_animation_update_interval (ClutterAnimation *animation,
return;
}
if (!g_value_type_compatible (G_PARAM_SPEC_VALUE_TYPE (pspec),
clutter_interval_get_value_type (interval)))
pspec_type = G_PARAM_SPEC_VALUE_TYPE (pspec);
int_type = clutter_interval_get_value_type (interval);
if (!g_value_type_compatible (int_type, pspec_type) ||
!g_value_type_transformable (int_type, pspec_type))
{
g_warning ("Cannot update property '%s': the interval value of "
"type '%s' is not compatible with the property value "
"of type '%s'",
property_name,
g_type_name (clutter_interval_get_value_type (interval)),
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
g_type_name (int_type),
g_type_name (pspec_type));
return;
}
@ -906,6 +914,7 @@ clutter_animation_update (ClutterAnimation *animation,
{
ClutterAnimationPrivate *priv;
ClutterInterval *interval;
GType int_type;
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), NULL);
g_return_val_if_fail (property_name != NULL, NULL);
@ -923,14 +932,16 @@ clutter_animation_update (ClutterAnimation *animation,
return NULL;
}
if (!g_value_type_compatible (G_VALUE_TYPE (final),
clutter_interval_get_value_type (interval)))
int_type = clutter_interval_get_value_type (interval);
if (!g_value_type_compatible (G_VALUE_TYPE (final), int_type) ||
!g_value_type_transformable (G_VALUE_TYPE (final), int_type))
{
g_warning ("Cannot update property '%s': the interval value of "
"type '%s' is not compatible with the property value "
"of type '%s'",
property_name,
g_type_name (clutter_interval_get_value_type (interval)),
g_type_name (int_type),
g_type_name (G_VALUE_TYPE (final)));
return NULL;
}