static int
scrollGesture(Gesture g)
{ Name msg;
Int amount;
Graphical gr;
Name dir = NAME_forwards;
if ( !scrollMessage(g, g->drag_scroll_event, &gr, &msg, &amount) )
fail;
if ( valInt(amount) < 0 )
{ dir = NAME_backwards;
amount = toInt(-valInt(amount));
}
if ( hasSendMethodObject(gr, msg) &&
send(gr, msg, dir, NAME_line, amount, EAV) )
{ EventObj ev = getCloneObject(g->drag_scroll_event); /* TBD: optimise? */
DEBUG(NAME_dragScroll,
Cprintf("Drag event = %s, receiver %s\n",
pp(ev->id), pp(ev->receiver)));
ComputeGraphical(gr);
restrictAreaEvent(ev, gr); /* Normalise to area of rec */
send(g, NAME_drag, ev, EAV);
synchroniseGraphical(gr, ON);
doneObject(ev);
}
succeed;
}
static status
typedIntItem(IntItem ii, EventId id)
{ CharArray save = getCopyCharArray(ii->value_text->string);
status rval = typedTextItem((TextItem)ii, id);
if ( rval &&
!checkType(ii->value_text->string, TypeInt, NIL) &&
getSizeCharArray(ii->value_text->string) != ZERO )
{ displayedValueTextItem((TextItem)ii, save);
return errorPce(ii, NAME_cannotConvertText,
ii->value_text->string, ii->type);
}
doneObject(save);
return rval;
}
