/* Query if long-press events should be handled and signals emitted */
static void _xfdashboard_click_action_query_long_press(XfdashboardClickAction *self)
{
XfdashboardClickActionPrivate *priv;
ClutterActor *actor;
gboolean result;
gint timeout;
g_return_if_fail(XFDASHBOARD_IS_CLICK_ACTION(self));
priv=self->priv;
result=FALSE;
/* If no duration was set get default one from settings */
if(priv->longPressDuration<0)
{
ClutterSettings *settings=clutter_settings_get_default();
g_object_get(settings, "long-press-duration", &timeout, NULL);
}
else timeout=priv->longPressDuration;
/* Emit signal to determine if long-press should be supported */
actor=clutter_actor_meta_get_actor(CLUTTER_ACTOR_META(self));
g_signal_emit(self, XfdashboardClickActionSignals[SIGNAL_LONG_PRESS], 0, actor, CLUTTER_LONG_PRESS_QUERY, &result);
if(result)
{
priv->longPressID=clutter_threads_add_timeout(timeout,
_xfdashboard_click_action_emit_long_press,
self);
}
}
/**
* xfdashboard_click_action_get_coords:
* @self: A #XfdashboardClickAction
* @outPressX: (out): Return location for the X coordinate or %NULL
* @outPressY: (out): Return location for the Y coordinate or %NULL
*
* Retrieves the screen coordinates of the button press.
*/
void xfdashboard_click_action_get_coords(XfdashboardClickAction *self, gfloat *outPressX, gfloat *outPressY)
{
g_return_if_fail(XFDASHBOARD_IS_CLICK_ACTION(self));
if(outPressX!=NULL) *outPressX=self->priv->pressX;
if(outPressY!=NULL) *outPressY=self->priv->pressY;
}
/* Emit "long-press" signal */
static gboolean _xfdashboard_click_action_emit_long_press(gpointer inUserData)
{
XfdashboardClickAction *self;
XfdashboardClickActionPrivate *priv;
ClutterActor *actor;
gboolean result;
g_return_val_if_fail(XFDASHBOARD_IS_CLICK_ACTION(inUserData), FALSE);
self=XFDASHBOARD_CLICK_ACTION(inUserData);
priv=self->priv;
/* Reset variables */
priv->longPressID=0;
/* Emit signal */
actor=clutter_actor_meta_get_actor(CLUTTER_ACTOR_META(inUserData));
g_signal_emit(self, XfdashboardClickActionSignals[SIGNAL_LONG_PRESS], 0, actor, CLUTTER_LONG_PRESS_ACTIVATE, &result);
/* Disconnect signal handlers */
if(priv->captureID!=0)
{
g_signal_handler_disconnect(priv->stage, priv->captureID);
priv->captureID=0;
}
/* Reset state of this action */
_xfdashboard_click_action_set_pressed(self, FALSE);
_xfdashboard_click_action_set_held(self, FALSE);
/* Event handled */
return(FALSE);
}
/* Set press state */
static void _xfdashboard_click_action_set_pressed(XfdashboardClickAction *self, gboolean isPressed)
{
XfdashboardClickActionPrivate *priv;
ClutterActor *actor;
g_return_if_fail(XFDASHBOARD_IS_CLICK_ACTION(self));
priv=self->priv;
/* Set value if changed */
isPressed=!!isPressed;
if(priv->isPressed!=isPressed)
{
/* Set value */
priv->isPressed=isPressed;
/* Style state */
actor=clutter_actor_meta_get_actor(CLUTTER_ACTOR_META(self));
if(XFDASHBOARD_IS_ACTOR(actor))
{
if(priv->isPressed) xfdashboard_stylable_add_pseudo_class(XFDASHBOARD_STYLABLE(actor), "pressed");
else xfdashboard_stylable_remove_pseudo_class(XFDASHBOARD_STYLABLE(actor), "pressed");
}
/* Notify about property change */
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardClickActionProperties[PROP_PRESSED]);
}
}
/* A menu item was clicked */
static void _xfdashboard_popup_menu_item_meta_clicked(XfdashboardPopupMenuItemMeta *self,
ClutterActor *inActor,
gpointer inUserData)
{
g_return_if_fail(XFDASHBOARD_IS_POPUP_MENU_ITEM_META(self));
g_return_if_fail(CLUTTER_IS_ACTOR(inActor));
g_return_if_fail(XFDASHBOARD_IS_CLICK_ACTION(inUserData));
/* Activate menu item */
xfdashboard_popup_menu_item_meta_activate(self);
}
/* Called when attaching and detaching a ClutterActorMeta instance to a ClutterActor */
static void _xfdashboard_click_action_set_actor(ClutterActorMeta *inActorMeta, ClutterActor *inActor)
{
XfdashboardClickAction *self;
XfdashboardClickActionPrivate *priv;
g_return_if_fail(XFDASHBOARD_IS_CLICK_ACTION(inActorMeta));
self=XFDASHBOARD_CLICK_ACTION(inActorMeta);
priv=self->priv;
/* Disconnect signals and remove sources */
if(priv->eventID!=0)
{
ClutterActor *oldActor=clutter_actor_meta_get_actor(inActorMeta);
if(oldActor!=NULL) g_signal_handler_disconnect(oldActor, priv->eventID);
priv->eventID=0;
}
if(priv->captureID!=0)
{
if(priv->stage!=NULL) g_signal_handler_disconnect(priv->stage, priv->captureID);
priv->captureID=0;
priv->stage=NULL;
}
if(priv->longPressID!=0)
{
g_source_remove(priv->longPressID);
priv->longPressID=0;
}
/* Reset state of this action */
_xfdashboard_click_action_set_pressed(self, FALSE);
_xfdashboard_click_action_set_held(self, FALSE);
/* Connect signals */
if(inActor!=NULL)
{
priv->eventID=g_signal_connect_swapped(inActor,
"event",
G_CALLBACK(_xfdashboard_click_action_on_event),
self);
}
/* Call parent's class method */
if(CLUTTER_ACTOR_META_CLASS(xfdashboard_click_action_parent_class)->set_actor)
{
CLUTTER_ACTOR_META_CLASS(xfdashboard_click_action_parent_class)->set_actor(inActorMeta, inActor);
}
}
/* Proxy ClickAction signals */
static void _xfdashboard_button_clicked(XfdashboardClickAction *inAction,
ClutterActor *self,
gpointer inUserData)
{
g_return_if_fail(XFDASHBOARD_IS_CLICK_ACTION(inAction));
g_return_if_fail(XFDASHBOARD_IS_BUTTON(self));
/* Only emit signal if click was perform with left button */
if(xfdashboard_click_action_get_button(inAction)==XFDASHBOARD_CLICK_ACTION_LEFT_BUTTON)
{
/* Emit 'clicked' signal */
g_signal_emit(self, XfdashboardButtonSignals[SIGNAL_CLICKED], 0);
}
}
/* Set held state */
static void _xfdashboard_click_action_set_held(XfdashboardClickAction *self, gboolean isHeld)
{
XfdashboardClickActionPrivate *priv;
g_return_if_fail(XFDASHBOARD_IS_CLICK_ACTION(self));
priv=self->priv;
/* Set value if changed */
isHeld=!!isHeld;
if(priv->isHeld!=isHeld)
{
/* Set value */
priv->isHeld=isHeld;
/* Notify about property change */
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardClickActionProperties[PROP_HELD]);
}
}
/**
* xfdashboard_click_action_release:
* @self: A #XfdashboardClickAction
*
* Emulates a release of the pointer button, which ungrabs the pointer
* and unsets the #XfdashboardClickAction:pressed state.
*
* This function will also cancel the long press gesture if one was
* initiated.
*
* This function is useful to break a grab, for instance after a certain
* amount of time has passed.
*/
void xfdashboard_click_action_release(XfdashboardClickAction *self)
{
XfdashboardClickActionPrivate *priv;
g_return_if_fail(XFDASHBOARD_IS_CLICK_ACTION(self));
priv=self->priv;
/* Only release pointer button if it is held by this action */
if(!priv->isHeld) return;
/* Disconnect signal handlers */
if(priv->captureID!=0)
{
g_signal_handler_disconnect(priv->stage, priv->captureID);
priv->captureID=0;
}
/* Reset state of this action */
_xfdashboard_click_action_cancel_long_press(self);
_xfdashboard_click_action_set_held(self, FALSE);
_xfdashboard_click_action_set_pressed(self, FALSE);
}
/* Cancel long-press handling */
static void _xfdashboard_click_action_cancel_long_press(XfdashboardClickAction *self)
{
XfdashboardClickActionPrivate *priv;
g_return_if_fail(XFDASHBOARD_IS_CLICK_ACTION(self));
priv=self->priv;
/* Remove signals/sources and emit cancel signal */
if(priv->longPressID!=0)
{
ClutterActor *actor;
gboolean result;
/* Remove source */
g_source_remove(priv->longPressID);
priv->longPressID=0;
/* Emit signal */
actor=clutter_actor_meta_get_actor(CLUTTER_ACTOR_META(self));
g_signal_emit(self, XfdashboardClickActionSignals[SIGNAL_LONG_PRESS], 0, actor, CLUTTER_LONG_PRESS_CANCEL, &result);
}
}
/**
* xfdashboard_click_action_get_state:
* @self: A #XfdashboardClickAction
*
* Retrieves the modifier state of the click action.
*
* Return value: The modifier state parameter or 0
*/
ClutterModifierType xfdashboard_click_action_get_state(XfdashboardClickAction *self)
{
g_return_val_if_fail(XFDASHBOARD_IS_CLICK_ACTION(self), 0);
return(self->priv->modifierState);
}
/**
* xfdashboard_click_action_get_button:
* @self: A #XfdashboardClickAction
*
* Retrieves the button that was pressed.
*
* Return value: The button value
*/
guint xfdashboard_click_action_get_button(XfdashboardClickAction *self)
{
g_return_val_if_fail(XFDASHBOARD_IS_CLICK_ACTION(self), 0);
return(self->priv->pressButton);
}
/* An event was received */
static gboolean _xfdashboard_click_action_on_event(XfdashboardClickAction *self, ClutterEvent *inEvent, gpointer inUserData)
{
XfdashboardClickActionPrivate *priv;
gboolean hasButton;
ClutterActor *actor;
g_return_val_if_fail(XFDASHBOARD_IS_CLICK_ACTION(self), CLUTTER_EVENT_PROPAGATE);
g_return_val_if_fail(CLUTTER_IS_ACTOR(inUserData), CLUTTER_EVENT_PROPAGATE);
priv=self->priv;
hasButton=TRUE;
actor=CLUTTER_ACTOR(inUserData);
/* Check if actor is enabled to handle events */
if(!clutter_actor_meta_get_enabled(CLUTTER_ACTOR_META(self))) return(CLUTTER_EVENT_PROPAGATE);
/* Handle event */
switch(clutter_event_type(inEvent))
{
case CLUTTER_TOUCH_BEGIN:
hasButton=FALSE;
case CLUTTER_BUTTON_PRESS:
/* We only handle single clicks if it is pointer device */
if(hasButton && clutter_event_get_click_count(inEvent)!=1)
{
return(CLUTTER_EVENT_PROPAGATE);
}
/* Do we already held the press? */
if(priv->isHeld) return(CLUTTER_EVENT_STOP);
/* Is the source of event a child of this actor. If not do
* not handle this event but any other.
*/
if(!clutter_actor_contains(actor, clutter_event_get_source(inEvent)))
{
return(CLUTTER_EVENT_PROPAGATE);
}
/* Remember event data */
priv->pressButton=hasButton ? clutter_event_get_button(inEvent) : 0;
priv->pressDeviceID=clutter_event_get_device_id(inEvent);
priv->pressSequence=clutter_event_get_event_sequence(inEvent);
priv->modifierState=clutter_event_get_state(inEvent);
clutter_event_get_coords(inEvent, &priv->pressX, &priv->pressY);
if(priv->longPressThreshold<0)
{
ClutterSettings *settings=clutter_settings_get_default();
g_object_get(settings, "dnd-drag-threshold", &priv->dragThreshold, NULL);
}
else priv->dragThreshold=priv->longPressThreshold;
if(priv->stage==NULL) priv->stage=clutter_actor_get_stage(actor);
/* Connect signals */
priv->captureID=g_signal_connect_object(priv->stage,
"captured-event",
G_CALLBACK(_xfdashboard_click_action_on_captured_event),
self,
G_CONNECT_AFTER | G_CONNECT_SWAPPED);
/* Set state of this action */
_xfdashboard_click_action_set_pressed(self, TRUE);
_xfdashboard_click_action_set_held(self, TRUE);
_xfdashboard_click_action_query_long_press(self);
break;
case CLUTTER_ENTER:
_xfdashboard_click_action_set_pressed(self, priv->isHeld);
break;
case CLUTTER_LEAVE:
_xfdashboard_click_action_set_pressed(self, priv->isHeld);
_xfdashboard_click_action_cancel_long_press(self);
break;
default:
break;
}
return(CLUTTER_EVENT_PROPAGATE);
}
/* An event was captured */
static gboolean _xfdashboard_click_action_on_captured_event(XfdashboardClickAction *self,
ClutterEvent *inEvent,
gpointer inUserData)
{
XfdashboardClickActionPrivate *priv;
ClutterActor *stage G_GNUC_UNUSED;
ClutterActor *actor;
ClutterModifierType modifierState;
gboolean hasButton;
g_return_val_if_fail(XFDASHBOARD_IS_CLICK_ACTION(self), CLUTTER_EVENT_PROPAGATE);
g_return_val_if_fail(CLUTTER_IS_ACTOR(inUserData), CLUTTER_EVENT_PROPAGATE);
priv=self->priv;
stage=CLUTTER_ACTOR(inUserData);
hasButton=TRUE;
/* Handle captured event */
actor=clutter_actor_meta_get_actor(CLUTTER_ACTOR_META(self));
switch(clutter_event_type(inEvent))
{
case CLUTTER_TOUCH_END:
hasButton=FALSE;
case CLUTTER_BUTTON_RELEASE:
if(!priv->isHeld) return(CLUTTER_EVENT_STOP);
if((hasButton && clutter_event_get_button(inEvent)!=priv->pressButton) ||
(hasButton && clutter_event_get_click_count(inEvent)!=1) ||
clutter_event_get_device_id(inEvent)!=priv->pressDeviceID ||
clutter_event_get_event_sequence(inEvent)!=priv->pressSequence)
{
return(CLUTTER_EVENT_PROPAGATE);
}
_xfdashboard_click_action_set_held(self, FALSE);
_xfdashboard_click_action_cancel_long_press(self);
/* Disconnect the capture */
if(priv->captureID!=0)
{
g_signal_handler_disconnect(priv->stage, priv->captureID);
priv->captureID = 0;
}
if(priv->longPressID!=0)
{
g_source_remove(priv->longPressID);
priv->longPressID=0;
}
if(!clutter_actor_contains(actor, clutter_event_get_source(inEvent)))
{
return(CLUTTER_EVENT_PROPAGATE);
}
/* Exclude any button-mask so that we can compare
* the press and release states properly
*/
modifierState=clutter_event_get_state(inEvent) &
~(CLUTTER_BUTTON1_MASK |
CLUTTER_BUTTON2_MASK |
CLUTTER_BUTTON3_MASK |
CLUTTER_BUTTON4_MASK |
CLUTTER_BUTTON5_MASK);
/* If press and release states don't match we simply ignore
* modifier keys. i.e. modifier keys are expected to be pressed
* throughout the whole click
*/
if(modifierState!=priv->modifierState) priv->modifierState=0;
_xfdashboard_click_action_set_pressed(self, FALSE);
g_signal_emit(self, XfdashboardClickActionSignals[SIGNAL_CLICKED], 0, actor);
break;
case CLUTTER_MOTION:
case CLUTTER_TOUCH_UPDATE:
{
gfloat motionX, motionY;
gfloat deltaX, deltaY;
if(!priv->isHeld) return(CLUTTER_EVENT_PROPAGATE);
clutter_event_get_coords (inEvent, &motionX, &motionY);
deltaX=ABS(motionX-priv->pressX);
deltaY=ABS(motionY-priv->pressY);
if(deltaX>priv->dragThreshold || deltaY>priv->dragThreshold)
{
_xfdashboard_click_action_cancel_long_press(self);
}
}
break;
default:
break;
}
/* This is line changed in returning CLUTTER_EVENT_PROPAGATE
* instead of CLUTTER_EVENT_STOP
*/
return(CLUTTER_EVENT_PROPAGATE);
}
