/* on double click, zoom in on the clicked point;
* also keeps scale in the range 0.1 to 20
*/
static gboolean
clicked_cb (ClutterActor *actor,
ClutterEvent *event,
gpointer user_data)
{
gdouble scale;
gfloat click_x, click_y;
gfloat click_target_x, click_target_y;
guint32 button;
/* don't do anything unless there was a double click */
if (clutter_event_get_click_count (event) < 2)
return TRUE;
/* work out new scale */
button = clutter_event_get_button (event);
clutter_actor_get_scale (actor, &scale, NULL);
if (button == CLUTTER_BUTTON_PRIMARY)
scale *= 1.2;
else if (button == CLUTTER_BUTTON_SECONDARY)
scale /= 1.2;
/* don't do anything if scale is outside bounds */
if (scale < 0.1 || scale > 20.0)
return TRUE;
/* get the location of the click on the scaled actor */
clutter_event_get_coords (event, &click_x, &click_y);
clutter_actor_transform_stage_point (actor,
click_x, click_y,
&click_target_x, &click_target_y);
/* anchor the actor on the clicked point on its surface */
clutter_actor_set_anchor_point (actor, click_target_x, click_target_y);
/* set the actor's position to the click coords: it won't move,
* because the anchor point is already there; but
* the scale will now be centered on these coords (as the
* scale center defaults to the anchor point); so the anchor point
* on the actor won't move from under the pointer
*/
clutter_actor_set_position (actor, click_x, click_y);
clutter_actor_animate (actor, CLUTTER_LINEAR, 500,
"scale-x", scale,
"scale-y", scale,
NULL);
return TRUE;
}
static gboolean
button_event_cb (ClutterActor *actor,
ClutterEvent *event,
gpointer user_data)
{
gfloat x, y;
gchar *event_type;
guint button_pressed;
ClutterModifierType state;
gchar *ctrl_pressed;
guint32 click_count;
/* where the pointer was when the button event occurred */
clutter_event_get_coords (event, &x, &y);
/* check whether it was a press or release event */
event_type = "released";
if (clutter_event_type (event) == CLUTTER_BUTTON_PRESS)
event_type = "pressed";
/* which button triggered the event */
button_pressed = clutter_event_get_button (event);
/* keys down when the button was pressed */
state = clutter_event_get_state (event);
ctrl_pressed = "ctrl not pressed";
if (state & CLUTTER_CONTROL_MASK)
ctrl_pressed = "ctrl pressed";
/* click count */
click_count = clutter_event_get_click_count (event);
g_debug ("button %d %s at %.0f,%.0f; %s; click count %d",
button_pressed,
event_type,
x,
y,
ctrl_pressed,
click_count);
return TRUE;
}
IO_METHOD(IoClutterEvent, getClickCount) {
return IONUMBER(clutter_event_get_click_count(IOCEVENT(self)));
}
static gboolean
on_captured_event (ClutterActor *stage,
ClutterEvent *event,
ClutterClickAction *action)
{
ClutterClickActionPrivate *priv = action->priv;
ClutterActor *actor;
ClutterModifierType modifier_state;
gboolean has_button = TRUE;
actor = clutter_actor_meta_get_actor (CLUTTER_ACTOR_META (action));
switch (clutter_event_type (event))
{
case CLUTTER_TOUCH_END:
has_button = FALSE;
case CLUTTER_BUTTON_RELEASE:
if (!priv->is_held)
return CLUTTER_EVENT_STOP;
if ((has_button && clutter_event_get_button (event) != priv->press_button) ||
(has_button && clutter_event_get_click_count (event) != 1) ||
clutter_event_get_device_id (event) != priv->press_device_id ||
clutter_event_get_event_sequence (event) != priv->press_sequence)
return CLUTTER_EVENT_PROPAGATE;
click_action_set_held (action, FALSE);
click_action_cancel_long_press (action);
/* disconnect the capture */
if (priv->capture_id != 0)
{
g_signal_handler_disconnect (priv->stage, priv->capture_id);
priv->capture_id = 0;
}
if (priv->long_press_id != 0)
{
g_source_remove (priv->long_press_id);
priv->long_press_id = 0;
}
if (!clutter_actor_contains (actor, clutter_event_get_source (event)))
return CLUTTER_EVENT_PROPAGATE;
/* exclude any button-mask so that we can compare
* the press and release states properly */
modifier_state = clutter_event_get_state (event) &
~(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 (modifier_state != priv->modifier_state)
priv->modifier_state = 0;
click_action_set_pressed (action, FALSE);
g_signal_emit (action, click_signals[CLICKED], 0, actor);
break;
case CLUTTER_MOTION:
case CLUTTER_TOUCH_UPDATE:
{
gfloat motion_x, motion_y;
gfloat delta_x, delta_y;
if (!priv->is_held)
return CLUTTER_EVENT_PROPAGATE;
clutter_event_get_coords (event, &motion_x, &motion_y);
delta_x = ABS (motion_x - priv->press_x);
delta_y = ABS (motion_y - priv->press_y);
if (delta_x > priv->drag_threshold ||
delta_y > priv->drag_threshold)
click_action_cancel_long_press (action);
}
break;
default:
break;
}
return CLUTTER_EVENT_STOP;
}
static gboolean
on_event (ClutterActor *actor,
ClutterEvent *event,
ClutterClickAction *action)
{
ClutterClickActionPrivate *priv = action->priv;
gboolean has_button = TRUE;
if (!clutter_actor_meta_get_enabled (CLUTTER_ACTOR_META (action)))
return CLUTTER_EVENT_PROPAGATE;
switch (clutter_event_type (event))
{
case CLUTTER_TOUCH_BEGIN:
has_button = FALSE;
case CLUTTER_BUTTON_PRESS:
if (has_button && clutter_event_get_click_count (event) != 1)
return CLUTTER_EVENT_PROPAGATE;
if (priv->is_held)
return CLUTTER_EVENT_STOP;
if (!clutter_actor_contains (actor, clutter_event_get_source (event)))
return CLUTTER_EVENT_PROPAGATE;
priv->press_button = has_button ? clutter_event_get_button (event) : 0;
priv->press_device_id = clutter_event_get_device_id (event);
priv->press_sequence = clutter_event_get_event_sequence (event);
priv->modifier_state = clutter_event_get_state (event);
clutter_event_get_coords (event, &priv->press_x, &priv->press_y);
if (priv->long_press_threshold < 0)
{
ClutterSettings *settings = clutter_settings_get_default ();
g_object_get (settings,
"dnd-drag-threshold", &priv->drag_threshold,
NULL);
}
else
priv->drag_threshold = priv->long_press_threshold;
if (priv->stage == NULL)
priv->stage = clutter_actor_get_stage (actor);
priv->capture_id = g_signal_connect_after (priv->stage, "captured-event",
G_CALLBACK (on_captured_event),
action);
click_action_set_pressed (action, TRUE);
click_action_set_held (action, TRUE);
click_action_query_long_press (action);
break;
case CLUTTER_ENTER:
click_action_set_pressed (action, priv->is_held);
break;
case CLUTTER_LEAVE:
click_action_set_pressed (action, priv->is_held);
click_action_cancel_long_press (action);
break;
default:
break;
}
return CLUTTER_EVENT_PROPAGATE;
}
/* 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);
}
static gboolean
input_cb (ClutterActor *actor,
ClutterEvent *event,
gpointer data)
{
ClutterActor *stage = clutter_actor_get_stage (actor);
ClutterActor *source_actor = clutter_event_get_source (event);
gchar keybuf[128];
switch (event->type)
{
case CLUTTER_KEY_PRESS:
fill_keybuf (keybuf, &event->key);
printf ("[%s] KEY PRESS %s",
clutter_actor_get_name (source_actor),
keybuf);
break;
case CLUTTER_KEY_RELEASE:
fill_keybuf (keybuf, &event->key);
printf ("[%s] KEY RELEASE %s",
clutter_actor_get_name (source_actor),
keybuf);
break;
case CLUTTER_MOTION:
{
ClutterMotionEvent *motion = (ClutterMotionEvent *) event;
g_print ("[%s] MOTION (%.02f,%.02f)",
clutter_actor_get_name (source_actor), motion->x, motion->y);
}
break;
case CLUTTER_ENTER:
g_print ("[%s] ENTER (from:%s)",
clutter_actor_get_name (source_actor),
clutter_event_get_related (event) != NULL
? clutter_actor_get_name (clutter_event_get_related (event))
: "<out of stage>");
break;
case CLUTTER_LEAVE:
g_print ("[%s] LEAVE (to:%s)",
clutter_actor_get_name (source_actor),
clutter_event_get_related (event) != NULL
? clutter_actor_get_name (clutter_event_get_related (event))
: "<out of stage>");
break;
case CLUTTER_BUTTON_PRESS:
g_print ("[%s] BUTTON PRESS (button:%i, click count:%i)",
clutter_actor_get_name (source_actor),
clutter_event_get_button (event),
clutter_event_get_click_count (event));
break;
case CLUTTER_BUTTON_RELEASE:
g_print ("[%s] BUTTON RELEASE (button:%i, click count:%i)",
clutter_actor_get_name (source_actor),
clutter_event_get_button (event),
clutter_event_get_click_count (event));
if (source_actor == stage)
clutter_stage_set_key_focus (CLUTTER_STAGE (stage), NULL);
else if (source_actor == actor &&
clutter_actor_get_parent (actor) == stage)
clutter_stage_set_key_focus (CLUTTER_STAGE (stage), actor);
break;
case CLUTTER_SCROLL:
g_print ("[%s] BUTTON SCROLL (direction:%s)",
clutter_actor_get_name (source_actor),
clutter_event_get_scroll_direction (event) == CLUTTER_SCROLL_UP
? "up"
: "down");
break;
case CLUTTER_STAGE_STATE:
g_print ("[%s] STAGE STATE", clutter_actor_get_name (source_actor));
break;
case CLUTTER_DESTROY_NOTIFY:
g_print ("[%s] DESTROY NOTIFY", clutter_actor_get_name (source_actor));
break;
case CLUTTER_CLIENT_MESSAGE:
g_print ("[%s] CLIENT MESSAGE", clutter_actor_get_name (source_actor));
break;
case CLUTTER_DELETE:
g_print ("[%s] DELETE", clutter_actor_get_name (source_actor));
break;
case CLUTTER_NOTHING:
return FALSE;
}
if (source_actor == actor)
g_print (" *source*");
g_print ("\n");
return FALSE;
}