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state: Constify StateKey accessors

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Since the accessors do not modify the StateKey we should constify the
argument.
This commit is contained in:
Emmanuele Bassi 2010-05-20 17:34:36 +01:00
parent 5c74f990d6
commit 3f36b4a841
2 changed files with 126 additions and 73 deletions
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179
clutter/clutter-state.c
View File

@ -1008,22 +1008,22 @@ clutter_state_key_get_type (void)
return our_type;
}
/**
* clutter_state_key_get_pre_delay:
* @state_key: a #ClutterStateKey
*
* Retrieve the pause before transitioning starts as a fraction of total
* transition time.
* Retrieves the pause before transitioning starts as a fraction of
* the total transition time.
*
* Return value: the pre delay used before starting the transition.
*
* Returns: the pre delay used before starting the transition.
* Since: 1.4
*/
gdouble
clutter_state_key_get_pre_delay (ClutterStateKey *state_key)
clutter_state_key_get_pre_delay (const ClutterStateKey *state_key)
{
g_return_val_if_fail (state_key, 0.0);
g_return_val_if_fail (state_key != NULL, 0.0);
return state_key->pre_delay;
}
@ -1031,16 +1031,18 @@ clutter_state_key_get_pre_delay (ClutterStateKey *state_key)
* clutter_state_key_get_post_delay:
* @state_key: a #ClutterStateKey
*
* Retrieve the duration of the pause after transitioning is complete as
* a fraction of total transition time.
* Retrieves the duration of the pause after transitioning is complete
* as a fraction of the total transition time.
*
* Return value: the post delay, used after doing the transition.
*
* Returns: the post delay, used after doing the transition.
* Since: 1.4
*/
gdouble
clutter_state_key_get_post_delay (ClutterStateKey *state_key)
clutter_state_key_get_post_delay (const ClutterStateKey *state_key)
{
g_return_val_if_fail (state_key, 0.0);
g_return_val_if_fail (state_key != NULL, 0.0);
return state_key->post_delay;
}
@ -1048,50 +1050,83 @@ clutter_state_key_get_post_delay (ClutterStateKey *state_key)
* clutter_state_key_get_mode:
* @state_key: a #ClutterStateKey
*
* Retrieve the easing mode used for a clutter_state_key.
* Retrieves the easing mode used for @state_key.
*
* Return value: the mode of a #ClutterStateKey
*
* Returns: the mode of a ClutterStateKey
* Since: 1.4
*/
gulong
clutter_state_key_get_mode (ClutterStateKey *state_key)
clutter_state_key_get_mode (const ClutterStateKey *state_key)
{
g_return_val_if_fail (state_key, 0);
g_return_val_if_fail (state_key != NULL, 0);
return state_key->mode;
}
/**
* clutter_state_key_get_value:
* @state_key: a #ClutterStateKey
* @value: a #GValue initialized with the correct type for the state_key.
* @value: a #GValue initialized with the correct type for the @state_key
*
* Get a copy of the value for a ClutterStateKey, the passed in GValue needs
* to be already initialized for the value type.
* Copies of the value for a #ClutterStateKey into @value
*
* The #GValue needs to be already initialized for the value type
* of the property or to a transformable type
*
* Since: 1.4
*/
void
clutter_state_key_get_value (ClutterStateKey *state_key,
GValue *value)
clutter_state_key_get_value (const ClutterStateKey *state_key,
GValue *value)
{
g_return_if_fail (state_key);
g_value_copy (&state_key->value, value);
}
g_return_if_fail (state_key != NULL);
g_return_if_fail (value != NULL);
g_return_if_fail (G_VALUE_TYPE (value) != G_TYPE_INVALID);
if (!g_type_is_a (G_VALUE_TYPE (&state_key->value), G_VALUE_TYPE (value)))
{
if (g_value_type_compatible (G_VALUE_TYPE (&state_key->value),
G_VALUE_TYPE (value)))
{
g_value_copy (&state_key->value, value);
return;
}
if (g_value_type_transformable (G_VALUE_TYPE (&state_key->value),
G_VALUE_TYPE (value)))
{
if (g_value_transform (&state_key->value, value))
return;
}
g_warning ("%s: Unable to convert from %s to %s for the "
"property '%s' of object %s in the state key",
G_STRLOC,
g_type_name (G_VALUE_TYPE (&state_key->value)),
g_type_name (G_VALUE_TYPE (value)),
state_key->property_name,
G_OBJECT_TYPE_NAME (state_key->object));
}
else
g_value_copy (&state_key->value, value);
}
/**
* clutter_state_key_get_object:
* @state_key: a #ClutterStateKey
*
* Get the object instance this #ClutterStateKey applies to.
* Retrieves the object instance this #ClutterStateKey applies to.
*
* Return value: (transfer none): the object this state key applies to.
*
* Returns: the object this state key applies to.
* Since: 1.4
*/
GObject *
clutter_state_key_get_object (ClutterStateKey *state_key)
clutter_state_key_get_object (const ClutterStateKey *state_key)
{
g_return_val_if_fail (state_key, NULL);
return state_key->object;
}
@ -1099,15 +1134,18 @@ clutter_state_key_get_object (ClutterStateKey *state_key)
* clutter_state_key_get_property_name:
* @state_key: a #ClutterStateKey
*
* Get the name of the property this #ClutterStateKey applies to.
* Retrieves the name of the property this #ClutterStateKey applies to
*
* Return value: the name of the property. The returned string is owned
* by the #ClutterStateKey and should never be modified or freed
*
* Returns: the name of the property the key applies to.
* Since: 1.4
*/
const gchar *
clutter_state_key_get_property_name (ClutterStateKey *state_key)
G_CONST_RETURN gchar *
clutter_state_key_get_property_name (const ClutterStateKey *state_key)
{
g_return_val_if_fail (state_key, NULL);
return state_key->property_name;
}
@ -1115,22 +1153,23 @@ clutter_state_key_get_property_name (ClutterStateKey *state_key)
* clutter_state_key_get_source_state_name:
* @state_key: a #ClutterStateKey
*
* Get the name of the source state this #ClutterStateKey contains,
* or NULL if this is the generic state key for the given property
* when transitioning to the target state.
* Retrieves the name of the source state of the @state_key
*
* Return value: the name of the source state for this key, or %NULL
* if this is the generic state key for the given property when
* transitioning to the target state. The returned string is owned
* by the #ClutterStateKey and should never be modified or freed
*
* Returns: the name of the source state for this key, or NULL if
* the key is generic.
* Since: 1.4
*/
const gchar *
clutter_state_key_get_source_state_name (ClutterStateKey *state_key)
G_CONST_RETURN gchar *
clutter_state_key_get_source_state_name (const ClutterStateKey *state_key)
{
g_return_val_if_fail (state_key, NULL);
if (state_key->source_state)
{
return state_key->source_state->name;
}
if (state_key->source_state != NULL)
return state_key->source_state->name;
return NULL;
}
@ -1142,14 +1181,16 @@ clutter_state_key_get_source_state_name (ClutterStateKey *state_key)
* or NULL if this is the generic state key for the given property
* when transitioning to the target state.
*
* Returns: the name of the source state for this key, or NULL if
* the key is generic.
* Return value: the name of the source state for this key, or NULL if
* the key is generic
*
* Since: 1.4
*/
const gchar *
clutter_state_key_get_target_state_name (ClutterStateKey *state_key)
G_CONST_RETURN gchar *
clutter_state_key_get_target_state_name (const ClutterStateKey *state_key)
{
g_return_val_if_fail (state_key, NULL);
return state_key->target_state->name;
}
@ -1207,16 +1248,20 @@ clutter_state_set_duration (ClutterState *state,
/**
* clutter_state_get_duration:
* @state: a #ClutterState
* @source_state_name: the name of the source state to set duration for or NULL
* @target_state_name: the name of the source state to set duration for or NULL
* @source_state_name: (allow-none): the name of the source state to
* get the duration of, or %NULL
* @target_state_name: (allow-none): the name of the source state to
* get the duration of, or %NULL
*
* Query the duration used for transitions between source/target state pair,
* the semantics for the query are the same as the semantics used for setting
* in #clutter_state_set_duration.
* Queries the duration used for transitions between a source and
* target state pair
*
* The semantics for the query are the same as the semantics used for
* setting the duration with clutter_state_set_duration()
*
* Return value: the duration, in milliseconds
*
* Since: 1.4
*
* Returns: the duration in ms.
*/
guint
clutter_state_get_duration (ClutterState *state,
@ -1224,7 +1269,7 @@ clutter_state_get_duration (ClutterState *state,
const gchar *target_state_name)
{
State *target_state;
guint ret = 0;
guint ret = 0;
g_return_val_if_fail (CLUTTER_IS_STATE (state), 0);
@ -1232,18 +1277,18 @@ clutter_state_get_duration (ClutterState *state,
if (source_state_name == g_intern_static_string ("default") ||
source_state_name == g_intern_static_string (""))
source_state_name = NULL;
target_state_name = g_intern_string (target_state_name);
if (target_state_name == g_intern_static_string ("default") ||
target_state_name == g_intern_static_string (""))
target_state_name = NULL;
if (target_state_name == NULL)
{
return state->priv->duration;
}
return state->priv->duration;
target_state = g_hash_table_lookup (state->priv->states,
target_state_name);
if (target_state)
if (target_state != NULL)
{
if (source_state_name)
ret = GPOINTER_TO_INT (g_hash_table_lookup (target_state->durations,
@ -1252,8 +1297,10 @@ clutter_state_get_duration (ClutterState *state,
ret = GPOINTER_TO_INT (g_hash_table_lookup (target_state->durations,
NULL));
}
if (!ret)
ret = state->priv->duration;
return ret;
}
@ -1261,16 +1308,22 @@ clutter_state_get_duration (ClutterState *state,
* clutter_state_get_target_state:
* @state: a #ClutterState
*
* Query the currently set target-state, during a transition it will also
* return the current target. Can be useful in the completed callback.
* Queries the currently set target state.
*
* During a transition this function will also return the current target.
*
* This function is useful when called from handlers of the
* #ClutterState::completed signal.
*
* Return value: a string containing the target state. The returned string
* is owned by the #ClutterState and should not be modified or freed
*
* Since: 1.4
*
* Returns: the duration in ms.
*/
const gchar *
G_CONST_RETURN gchar *
clutter_state_get_target_state (ClutterState *state)
{
g_return_val_if_fail (CLUTTER_IS_STATE (state), NULL);
return state->priv->target_state_name;
}

20
clutter/clutter-state.h
View File

@ -126,16 +126,16 @@ ClutterAnimator * clutter_state_get_animator (ClutterState *state,
const gchar *source_transition_name,
const gchar *target_transition_name);
GType clutter_state_key_get_type (void) G_GNUC_CONST;
gdouble clutter_state_key_get_pre_delay (ClutterStateKey *state_key);
gdouble clutter_state_key_get_post_delay (ClutterStateKey *state_key);
gulong clutter_state_key_get_mode (ClutterStateKey *state_key);
void clutter_state_key_get_value (ClutterStateKey *state_key,
GValue *value);
GObject * clutter_state_key_get_object (ClutterStateKey *state_key);
const gchar * clutter_state_key_get_property_name (ClutterStateKey *state_key);
const gchar * clutter_state_key_get_source_state_name (ClutterStateKey *state_key);
const gchar * clutter_state_key_get_target_state_name (ClutterStateKey *state_key);
GType clutter_state_key_get_type (void) G_GNUC_CONST;
gdouble clutter_state_key_get_pre_delay (const ClutterStateKey *state_key);
gdouble clutter_state_key_get_post_delay (const ClutterStateKey *state_key);
gulong clutter_state_key_get_mode (const ClutterStateKey *state_key);
void clutter_state_key_get_value (const ClutterStateKey *state_key,
GValue *value);
GObject * clutter_state_key_get_object (const ClutterStateKey *state_key);
G_CONST_RETURN gchar *clutter_state_key_get_property_name (const ClutterStateKey *state_key);
G_CONST_RETURN gchar *clutter_state_key_get_source_state_name (const ClutterStateKey *state_key);
G_CONST_RETURN gchar *clutter_state_key_get_target_state_name (const ClutterStateKey *state_key);
G_END_DECLS