static void helper_test_imagewidget_scroll_event(GtkWidget* widget, GdkEvent *event, gpointer user_data){
(void) user_data;
printf("scrolling\n");
GdkScrollDirection direction;
GrfImageWidget* imagewidget = GRF_IMAGEWIDGET(widget);
gdk_event_get_scroll_direction(event,&direction);
if(direction == GDK_SCROLL_UP)
grf_imagewidget_set_scale(imagewidget,grf_imagewidget_get_scale(imagewidget)*1.5,TRUE);
else
grf_imagewidget_set_scale(imagewidget,grf_imagewidget_get_scale(imagewidget)/1.5,TRUE);
}
static gboolean
sn_item_scroll_event (GtkWidget *widget,
GdkEventScroll *event)
{
SnItem *item;
GdkScrollDirection direction;
SnItemOrientation orientation;
gdouble dx;
gdouble dy;
gint delta;
item = SN_ITEM (widget);
if (!gdk_event_get_scroll_direction ((GdkEvent *) event, &direction))
{
g_assert_not_reached ();
}
else
{
switch (direction)
{
case GDK_SCROLL_UP:
case GDK_SCROLL_DOWN:
orientation = SN_ITEM_ORIENTATION_VERTICAL;
break;
case GDK_SCROLL_LEFT:
case GDK_SCROLL_RIGHT:
orientation = SN_ITEM_ORIENTATION_HORIZONTAL;
break;
case GDK_SCROLL_SMOOTH:
default:
g_assert_not_reached ();
break;
}
}
if (!gdk_event_get_scroll_deltas ((GdkEvent *) event, &dx, &dy))
{
switch (direction)
{
case GDK_SCROLL_UP:
case GDK_SCROLL_LEFT:
delta = 1;
break;
case GDK_SCROLL_DOWN:
case GDK_SCROLL_RIGHT:
delta = -1;
break;
case GDK_SCROLL_SMOOTH:
default:
g_assert_not_reached ();
break;
}
}
else
{
if (dy != 0)
delta = (gint) dy;
else
delta = (gint) dx;
}
SN_ITEM_GET_CLASS (item)->scroll (item, delta, orientation);
return GDK_EVENT_STOP;
}
