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_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_bar_scroll_event (ClutterActor *actor,
ClutterScrollEvent *event)
{
StScrollBarPrivate *priv = ST_SCROLL_BAR (actor)->priv;
gdouble step, value, delta_x, delta_y;
if (priv->adjustment)
{
g_object_get (priv->adjustment,
"step-increment", &step,
"value", &value,
NULL);
}
else
{
return FALSE;
}
switch (event->direction)
{
case CLUTTER_SCROLL_SMOOTH:
clutter_event_get_scroll_delta ((ClutterEvent *)event,
&delta_x, &delta_y);
if (fabs (delta_x) > fabs(delta_y))
st_adjustment_set_value (priv->adjustment, value + delta_x);
else
st_adjustment_set_value (priv->adjustment, value + delta_y);
break;
case CLUTTER_SCROLL_UP:
case CLUTTER_SCROLL_LEFT:
st_adjustment_set_value (priv->adjustment, value - step);
break;
case CLUTTER_SCROLL_DOWN:
case CLUTTER_SCROLL_RIGHT:
st_adjustment_set_value (priv->adjustment, value + step);
break;
}
return TRUE;
}
static gboolean
st_scroll_view_scroll_event (ClutterActor *self,
ClutterScrollEvent *event)
{
StScrollViewPrivate *priv = ST_SCROLL_VIEW (self)->priv;
gdouble value, step, hvalue, vvalue, delta_x, delta_y;
/* don't handle scroll events if requested not to */
if (!priv->mouse_scroll)
return FALSE;
switch (event->direction)
{
case CLUTTER_SCROLL_SMOOTH:
clutter_event_get_scroll_delta ((ClutterEvent *)event,
&delta_x, &delta_y);
g_object_get (priv->hadjustment,
"value", &hvalue,
NULL);
g_object_get (priv->vadjustment,
"value", &vvalue,
NULL);
break;
case CLUTTER_SCROLL_UP:
case CLUTTER_SCROLL_DOWN:
g_object_get (priv->vadjustment,
"step-increment", &step,
"value", &value,
NULL);
break;
case CLUTTER_SCROLL_LEFT:
case CLUTTER_SCROLL_RIGHT:
g_object_get (priv->hadjustment,
"step-increment", &step,
"value", &value,
NULL);
break;
}
switch (event->direction)
{
case CLUTTER_SCROLL_SMOOTH:
st_adjustment_set_value (priv->hadjustment, hvalue + delta_x);
st_adjustment_set_value (priv->vadjustment, vvalue + delta_y);
break;
case CLUTTER_SCROLL_UP:
st_adjustment_set_value (priv->vadjustment, value - step);
break;
case CLUTTER_SCROLL_DOWN:
st_adjustment_set_value (priv->vadjustment, value + step);
break;
case CLUTTER_SCROLL_LEFT:
st_adjustment_set_value (priv->hadjustment, value - step);
break;
case CLUTTER_SCROLL_RIGHT:
st_adjustment_set_value (priv->hadjustment, value + step);
break;
}
return TRUE;
}