public void mouseWheelMoved(MouseWheelEvent e) {
String st[] = {"PER UNITA'", "PER BLOCCO"};
int unit = e.getUnitsToScroll();
// calcolo per la scrollbar verticale l'attuale posizione
// e l'unità di incremento per scroll
JScrollBar sb = sp.getVerticalScrollBar();
int y = sb.getValue();
int y1 =
e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL
? sb.getUnitIncrement(1)
: sb.getBlockIncrement(1);
sb.setValue(y + y1 * unit); // aggiorna la view della textarea
int a = e.getScrollAmount();
int b = e.getScrollType();
int c = e.getUnitsToScroll();
int d = e.getWheelRotation();
double f = e.getPreciseWheelRotation();
String g =
"Unità da scorrere per giro di tacca: "
+ a
+ "\nTipo di scroll: "
+ st[e.getScrollType()]
+ "\nUnità che scorreranno verso l'alto: "
+ c
+ "\nNumero di tacche ruotate: "
+ d
+ "\nNumero di tacche precisamente ruotate: "
+ f;
wheel_area.setText(g);
}
@Override
public void mouseWheelMoved(final MouseWheelEvent e) {
// System.out.println( "MouseAndKeyHandler.mouseWheelMoved()" );
// System.out.println( e );
update();
final int mask = getMask(e);
final int x = e.getX();
final int y = e.getY();
final double wheelRotation = e.getPreciseWheelRotation();
/*
* AWT uses the SHIFT_DOWN_MASK to indicate horizontal scrolling. We
* keep track of whether the SHIFT key was actually pressed for
* disambiguation. However, we can only detect horizontal scrolling if
* the SHIFT key is not pressed. With SHIFT pressed, everything is
* treated as vertical scrolling.
*/
final boolean exShiftMask = (e.getModifiersEx() & InputEvent.SHIFT_DOWN_MASK) != 0;
final boolean isHorizontal = !shiftPressed && exShiftMask;
for (final BehaviourEntry<ScrollBehaviour> scroll : scrolls) {
if (scroll.buttons.matches(mask, pressedKeys)) {
scroll.behaviour.scroll(wheelRotation, isHorizontal, x, y);
}
}
}
/** @param e */
@Override
public void mouseWheelMoved(MouseWheelEvent e) {
if (simulationBox.onBackground()) {
simulationBox.zoom(e.getPreciseWheelRotation());
}
}
