static gboolean
st_scroll_bar_scroll_event (ClutterActor *actor,
ClutterScrollEvent *event)
{
StScrollBarPrivate *priv = ST_SCROLL_BAR (actor)->priv;
if (clutter_event_is_pointer_emulated ((ClutterEvent *) event))
return TRUE;
switch (event->direction)
{
case CLUTTER_SCROLL_SMOOTH:
{
gdouble delta_x, delta_y;
clutter_event_get_scroll_delta ((ClutterEvent *)event, &delta_x, &delta_y);
if (priv->vertical)
st_adjustment_adjust_for_scroll_event (priv->adjustment, delta_y);
else
st_adjustment_adjust_for_scroll_event (priv->adjustment, delta_x);
}
break;
case CLUTTER_SCROLL_UP:
case CLUTTER_SCROLL_DOWN:
case CLUTTER_SCROLL_LEFT:
case CLUTTER_SCROLL_RIGHT:
adjust_with_direction (priv->adjustment, event->direction);
break;
}
return TRUE;
}
static gboolean
st_scroll_view_scroll_event (ClutterActor *self,
ClutterScrollEvent *event)
{
StScrollViewPrivate *priv = ST_SCROLL_VIEW (self)->priv;
/* don't handle scroll events if requested not to */
if (!priv->mouse_scroll)
return FALSE;
if (clutter_event_is_pointer_emulated ((ClutterEvent *) event))
return TRUE;
switch (event->direction)
{
case CLUTTER_SCROLL_SMOOTH:
{
gdouble delta_x, delta_y;
clutter_event_get_scroll_delta ((ClutterEvent *)event, &delta_x, &delta_y);
st_adjustment_adjust_for_scroll_event (priv->hadjustment, delta_x);
st_adjustment_adjust_for_scroll_event (priv->vadjustment, delta_y);
}
break;
case CLUTTER_SCROLL_UP:
case CLUTTER_SCROLL_DOWN:
adjust_with_direction (priv->vadjustment, event->direction);
break;
case CLUTTER_SCROLL_LEFT:
case CLUTTER_SCROLL_RIGHT:
adjust_with_direction (priv->hadjustment, event->direction);
break;
}
return TRUE;
}
static gboolean
st_button_touch_event (ClutterActor *actor,
ClutterTouchEvent *event)
{
StButton *button = ST_BUTTON (actor);
StButtonPrivate *priv = st_button_get_instance_private (button);
StButtonMask mask = ST_BUTTON_MASK_FROM_BUTTON (1);
ClutterEventSequence *sequence;
ClutterInputDevice *device;
if (priv->pressed != 0)
return CLUTTER_EVENT_PROPAGATE;
if ((priv->button_mask & mask) == 0)
return CLUTTER_EVENT_PROPAGATE;
device = clutter_event_get_device ((ClutterEvent*) event);
sequence = clutter_event_get_event_sequence ((ClutterEvent*) event);
if (event->type == CLUTTER_TOUCH_BEGIN && !priv->press_sequence)
{
clutter_input_device_sequence_grab (device, sequence, actor);
if (!clutter_event_is_pointer_emulated ((ClutterEvent*) event))
st_button_press (button, device, 0, sequence);
return CLUTTER_EVENT_STOP;
}
else if (event->type == CLUTTER_TOUCH_END &&
priv->device == device &&
priv->press_sequence == sequence)
{
if (!clutter_event_is_pointer_emulated ((ClutterEvent*) event))
st_button_release (button, device, mask, 0, sequence);
clutter_input_device_sequence_ungrab (device, sequence);
return CLUTTER_EVENT_STOP;
}
else if (event->type == CLUTTER_TOUCH_CANCEL)
{
st_button_fake_release (button);
}
return CLUTTER_EVENT_PROPAGATE;
}
static gboolean
sequence_is_pointer_emulated (MetaDisplay *display,
const ClutterEvent *event)
{
ClutterEventSequence *sequence;
sequence = clutter_event_get_event_sequence (event);
if (!sequence)
return FALSE;
if (clutter_event_is_pointer_emulated (event))
return TRUE;
#ifdef HAVE_NATIVE_BACKEND
MetaBackend *backend = meta_get_backend ();
/* When using Clutter's native input backend there is no concept of
* pointer emulating sequence, we still must make up our own to be
* able to implement single-touch (hence pointer alike) behavior.
*
* This is implemented similarly to X11, where only the first touch
* on screen gets the "pointer emulated" flag, and it won't get assigned
* to another sequence until the next first touch on an idle touchscreen.
*/
if (META_IS_BACKEND_NATIVE (backend))
{
MetaGestureTracker *tracker;
tracker = meta_display_get_gesture_tracker (display);
if (event->type == CLUTTER_TOUCH_BEGIN &&
meta_gesture_tracker_get_n_current_touches (tracker) == 0)
return TRUE;
}
#endif /* HAVE_NATIVE_BACKEND */
return FALSE;
}