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Constify Event accessors and copy method

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This is still C, but at least we can get some sort of safety net when
using the API correctly.
This commit is contained in:
Emmanuele Bassi 2010-09-08 15:15:57 +01:00
parent 8fb4c7b9a9
commit e4870ebaf4
6 changed files with 64 additions and 64 deletions
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6
clutter/clutter-backend.c
View File

@ -519,9 +519,9 @@ _clutter_backend_get_units_per_em (ClutterBackend *backend,
}
void
_clutter_backend_copy_event_data (ClutterBackend *backend,
ClutterEvent *src,
ClutterEvent *dest)
_clutter_backend_copy_event_data (ClutterBackend *backend,
const ClutterEvent *src,
ClutterEvent *dest)
{
ClutterBackendClass *klass;

10
clutter/clutter-backend.h
View File

@ -85,11 +85,11 @@ struct _ClutterBackendClass
ClutterStage *stage);
ClutterDeviceManager *(* get_device_manager) (ClutterBackend *backend);
void (* copy_event_data) (ClutterBackend *backend,
ClutterEvent *src,
ClutterEvent *dest);
void (* free_event_data) (ClutterBackend *backend,
ClutterEvent *event);
void (* copy_event_data) (ClutterBackend *backend,
const ClutterEvent *src,
ClutterEvent *dest);
void (* free_event_data) (ClutterBackend *backend,
ClutterEvent *event);
/* signals */
void (* resolution_changed) (ClutterBackend *backend);

48
clutter/clutter-event.c
View File

@ -98,7 +98,7 @@ _clutter_event_set_platform_data (ClutterEvent *event,
* Return value: a #ClutterEventType
*/
ClutterEventType
clutter_event_type (ClutterEvent *event)
clutter_event_type (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, CLUTTER_NOTHING);
@ -116,7 +116,7 @@ clutter_event_type (ClutterEvent *event)
* Since: 0.4
*/
guint32
clutter_event_get_time (ClutterEvent *event)
clutter_event_get_time (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, CLUTTER_CURRENT_TIME);
@ -134,7 +134,7 @@ clutter_event_get_time (ClutterEvent *event)
* Since: 0.4
*/
ClutterModifierType
clutter_event_get_state (ClutterEvent *event)
clutter_event_get_state (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, 0);
@ -164,17 +164,17 @@ clutter_event_get_state (ClutterEvent *event)
/**
* clutter_event_get_coords:
* @event: a #ClutterEvent
* @x: return location for the X coordinate
* @y: return location for the Y coordinate
* @x: (out): return location for the X coordinate, or %NULL
* @y: (out): return location for the Y coordinate, or %NULL
*
* Retrieves the coordinates of @event and puts them into @x and @y.
*
* Since: 0.4
*/
void
clutter_event_get_coords (ClutterEvent *event,
gfloat *x,
gfloat *y)
clutter_event_get_coords (const ClutterEvent *event,
gfloat *x,
gfloat *y)
{
gfloat event_x, event_y;
@ -235,7 +235,7 @@ clutter_event_get_coords (ClutterEvent *event,
* Since: 0.6
*/
ClutterActor *
clutter_event_get_source (ClutterEvent *event)
clutter_event_get_source (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, NULL);
@ -254,7 +254,7 @@ clutter_event_get_source (ClutterEvent *event)
* Since: 0.8
*/
ClutterStage *
clutter_event_get_stage (ClutterEvent *event)
clutter_event_get_stage (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, NULL);
@ -272,7 +272,7 @@ clutter_event_get_stage (ClutterEvent *event)
* Since: 1.0
*/
ClutterEventFlags
clutter_event_get_flags (ClutterEvent *event)
clutter_event_get_flags (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, CLUTTER_EVENT_NONE);
@ -291,7 +291,7 @@ clutter_event_get_flags (ClutterEvent *event)
* Since: 1.0
*/
ClutterActor *
clutter_event_get_related (ClutterEvent *event)
clutter_event_get_related (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, NULL);
g_return_val_if_fail (event->type == CLUTTER_ENTER ||
@ -311,7 +311,7 @@ clutter_event_get_related (ClutterEvent *event)
* Since: 1.0
*/
ClutterScrollDirection
clutter_event_get_scroll_direction (ClutterEvent *event)
clutter_event_get_scroll_direction (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, CLUTTER_SCROLL_UP);
g_return_val_if_fail (event->type == CLUTTER_SCROLL, CLUTTER_SCROLL_UP);
@ -331,7 +331,7 @@ clutter_event_get_scroll_direction (ClutterEvent *event)
* Since: 1.0
*/
guint32
clutter_event_get_button (ClutterEvent *event)
clutter_event_get_button (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, 0);
g_return_val_if_fail (event->type == CLUTTER_BUTTON_PRESS ||
@ -352,7 +352,7 @@ clutter_event_get_button (ClutterEvent *event)
* Since: 1.0
*/
guint32
clutter_event_get_click_count (ClutterEvent *event)
clutter_event_get_click_count (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, 0);
g_return_val_if_fail (event->type == CLUTTER_BUTTON_PRESS ||
@ -375,7 +375,7 @@ clutter_event_get_click_count (ClutterEvent *event)
* Since: 1.0
*/
guint
clutter_event_get_key_symbol (ClutterEvent *event)
clutter_event_get_key_symbol (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, 0);
g_return_val_if_fail (event->type == CLUTTER_KEY_PRESS ||
@ -396,7 +396,7 @@ clutter_event_get_key_symbol (ClutterEvent *event)
* Since: 1.0
*/
guint16
clutter_event_get_key_code (ClutterEvent *event)
clutter_event_get_key_code (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, 0);
g_return_val_if_fail (event->type == CLUTTER_KEY_PRESS ||
@ -414,7 +414,7 @@ clutter_event_get_key_code (ClutterEvent *event)
* Return value: The unicode value representing the key
*/
guint32
clutter_event_get_key_unicode (ClutterEvent *event)
clutter_event_get_key_unicode (const ClutterEvent *event)
{
g_return_val_if_fail (event != NULL, 0);
g_return_val_if_fail (event->type == CLUTTER_KEY_PRESS ||
@ -483,7 +483,7 @@ clutter_keysym_to_unicode (guint keyval)
* no specific device set.
*/
gint
clutter_event_get_device_id (ClutterEvent *event)
clutter_event_get_device_id (const ClutterEvent *event)
{
ClutterInputDevice *device = NULL;
@ -533,7 +533,7 @@ clutter_event_get_device_id (ClutterEvent *event)
* Since: 1.0
*/
ClutterInputDeviceType
clutter_event_get_device_type (ClutterEvent *event)
clutter_event_get_device_type (const ClutterEvent *event)
{
ClutterInputDevice *device = NULL;
@ -591,7 +591,7 @@ clutter_event_get_device_type (ClutterEvent *event)
* Since: 1.0
*/
ClutterInputDevice *
clutter_event_get_device (ClutterEvent *event)
clutter_event_get_device (const ClutterEvent *event)
{
ClutterInputDevice *device = NULL;
@ -661,7 +661,7 @@ clutter_event_new (ClutterEventType type)
new_event = (ClutterEvent *) priv;
new_event->type = new_event->any.type = type;
if (all_events == NULL)
if (G_UNLIKELY (all_events == NULL))
all_events = g_hash_table_new (NULL, NULL);
g_hash_table_replace (all_events, priv, GUINT_TO_POINTER (1));
@ -678,7 +678,7 @@ clutter_event_new (ClutterEventType type)
* Return value: A newly allocated #ClutterEvent
*/
ClutterEvent *
clutter_event_copy (ClutterEvent *event)
clutter_event_copy (const ClutterEvent *event)
{
ClutterEvent *new_event;
@ -776,7 +776,7 @@ clutter_event_peek (void)
* Since: 0.6
*/
void
clutter_event_put (ClutterEvent *event)
clutter_event_put (const ClutterEvent *event)
{
ClutterMainContext *context = _clutter_context_get_default ();
ClutterEvent *event_copy;

48
clutter/clutter-event.h
View File

@ -441,38 +441,38 @@ GType clutter_event_get_type (void) G_GNUC_CONST;
gboolean clutter_events_pending (void);
ClutterEvent * clutter_event_get (void);
ClutterEvent * clutter_event_peek (void);
void clutter_event_put (ClutterEvent *event);
void clutter_event_put (const ClutterEvent *event);
ClutterEvent * clutter_event_new (ClutterEventType type);
ClutterEvent * clutter_event_copy (ClutterEvent *event);
void clutter_event_free (ClutterEvent *event);
ClutterEvent * clutter_event_new (ClutterEventType type);
ClutterEvent * clutter_event_copy (const ClutterEvent *event);
void clutter_event_free (ClutterEvent *event);
ClutterEventType clutter_event_type (ClutterEvent *event);
ClutterEventFlags clutter_event_get_flags (ClutterEvent *event);
guint32 clutter_event_get_time (ClutterEvent *event);
ClutterModifierType clutter_event_get_state (ClutterEvent *event);
gint clutter_event_get_device_id (ClutterEvent *event);
ClutterInputDeviceType clutter_event_get_device_type (ClutterEvent *event);
ClutterInputDevice * clutter_event_get_device (ClutterEvent *event);
ClutterActor * clutter_event_get_source (ClutterEvent *event);
ClutterStage * clutter_event_get_stage (ClutterEvent *event);
ClutterEventType clutter_event_type (const ClutterEvent *event);
ClutterEventFlags clutter_event_get_flags (const ClutterEvent *event);
guint32 clutter_event_get_time (const ClutterEvent *event);
ClutterModifierType clutter_event_get_state (const ClutterEvent *event);
gint clutter_event_get_device_id (const ClutterEvent *event);
ClutterInputDeviceType clutter_event_get_device_type (const ClutterEvent *event);
ClutterInputDevice * clutter_event_get_device (const ClutterEvent *event);
ClutterActor * clutter_event_get_source (const ClutterEvent *event);
ClutterStage * clutter_event_get_stage (const ClutterEvent *event);
void clutter_event_get_coords (ClutterEvent *event,
gfloat *x,
gfloat *y);
void clutter_event_get_coords (const ClutterEvent *event,
gfloat *x,
gfloat *y);
guint clutter_event_get_key_symbol (ClutterEvent *event);
guint16 clutter_event_get_key_code (ClutterEvent *event);
guint32 clutter_event_get_key_unicode (ClutterEvent *event);
guint clutter_event_get_key_symbol (const ClutterEvent *event);
guint16 clutter_event_get_key_code (const ClutterEvent *event);
guint32 clutter_event_get_key_unicode (const ClutterEvent *event);
guint32 clutter_event_get_button (ClutterEvent *event);
guint clutter_event_get_click_count (ClutterEvent *event);
guint32 clutter_event_get_button (const ClutterEvent *event);
guint clutter_event_get_click_count (const ClutterEvent *event);
ClutterActor * clutter_event_get_related (ClutterEvent *event);
ClutterActor * clutter_event_get_related (const ClutterEvent *event);
ClutterScrollDirection clutter_event_get_scroll_direction (ClutterEvent *event);
ClutterScrollDirection clutter_event_get_scroll_direction (const ClutterEvent *event);
guint32 clutter_keysym_to_unicode (guint keyval);
guint32 clutter_keysym_to_unicode (guint keyval);
guint32 clutter_get_current_event_time (void);
G_CONST_RETURN ClutterEvent *clutter_get_current_event (void);

10
clutter/clutter-private.h
View File

@ -291,11 +291,11 @@ gboolean _clutter_backend_post_parse (ClutterBackend *backend,
GError **error);
void _clutter_backend_init_events (ClutterBackend *backend);
void _clutter_backend_copy_event_data (ClutterBackend *backend,
ClutterEvent *src,
ClutterEvent *dest);
void _clutter_backend_free_event_data (ClutterBackend *backend,
ClutterEvent *event);
void _clutter_backend_copy_event_data (ClutterBackend *backend,
const ClutterEvent *src,
ClutterEvent *dest);
void _clutter_backend_free_event_data (ClutterBackend *backend,
ClutterEvent *event);
ClutterFeatureFlags _clutter_backend_get_features (ClutterBackend *backend);

6
clutter/x11/clutter-backend-x11.c
View File

@ -482,9 +482,9 @@ clutter_backend_x11_get_features (ClutterBackend *backend)
}
static void
clutter_backend_x11_copy_event_data (ClutterBackend *backend,
ClutterEvent *src,
ClutterEvent *dest)
clutter_backend_x11_copy_event_data (ClutterBackend *backend,
const ClutterEvent *src,
ClutterEvent *dest)
{
gpointer event_x11;