javafx.scene.input.GestureEvent Maven / Gradle / Ivy
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package javafx.scene.input;
import com.sun.javafx.scene.input.InputEventUtils;
import com.sun.javafx.tk.Toolkit;
import java.io.IOException;
import javafx.event.Event;
import javafx.event.EventTarget;
import javafx.event.EventType;
import javafx.geometry.Point3D;
/**
* An event indicating gesture input. Gestures are typically caused by
* direct (touch screen) or indirect (track pad) touch events.
*
*
* Delivery of gestures is dependent on the capabilities of the underlying
* platform and connected input devices. For instance on a PC with mouse
* and keyboard there is no way of producing a rotating gesture.
*
* @since JavaFX 2.2
*/
public class GestureEvent extends InputEvent {
private static final long serialVersionUID = 20121107L;
/**
* Common supertype for all gestures.
*/
public static final EventType ANY =
new EventType(InputEvent.ANY, "GESTURE");
/**
* Creates a new instance of {@code GestureEvent}.
* @param eventType Type of the event
* @deprecated Do not use this constructor. Constructs empty event.
*/
@Deprecated(since="8")
protected GestureEvent(final EventType eventType) {
this(eventType, 0, 0, 0, 0, false, false, false, false, false, false, null);
}
/**
* Creates a new instance of {@code GestureEvent}.
* @param source Event source
* @param target Event target
* @param eventType Type of the event
* @deprecated Do not use this constructor. Constructs empty event.
*/
@Deprecated(since="8")
protected GestureEvent(Object source, EventTarget target,
final EventType eventType) {
super(source, target, eventType);
x = y = screenX = screenY = sceneX = sceneY = 0;
shiftDown = controlDown = altDown = metaDown = direct = inertia = false;
}
/**
* Constructs new GestureEvent event.
* @param source the source of the event. Can be null.
* @param target the target of the event. Can be null.
* @param eventType The type of the event.
* @param x The x with respect to the scene.
* @param y The y with respect to the scene.
* @param screenX The x coordinate relative to screen.
* @param screenY The y coordinate relative to screen.
* @param shiftDown true if shift modifier was pressed.
* @param controlDown true if control modifier was pressed.
* @param altDown true if alt modifier was pressed.
* @param metaDown true if meta modifier was pressed.
* @param direct true if the event was caused by direct input device. See {@link #isDirect() }
* @param inertia if represents inertia of an already finished gesture.
* @param pickResult pick result. Can be null, in this case a 2D pick result
* without any further values is constructed
* based on the scene coordinates and the target
* @since JavaFX 8.0
*/
protected GestureEvent(Object source, EventTarget target, final EventType eventType,
double x, double y, double screenX, double screenY,
boolean shiftDown, boolean controlDown, boolean altDown,
boolean metaDown, boolean direct, boolean inertia, PickResult pickResult) {
super(source, target, eventType);
this.x = x;
this.y = y;
this.screenX = screenX;
this.screenY = screenY;
this.sceneX = x;
this.sceneY = y;
this.shiftDown = shiftDown;
this.controlDown = controlDown;
this.altDown = altDown;
this.metaDown = metaDown;
this.direct = direct;
this.inertia = inertia;
this.pickResult = pickResult != null ? pickResult : new PickResult(target, x, y);
final Point3D p = InputEventUtils.recomputeCoordinates(this.pickResult, null);
this.x = p.getX();
this.y = p.getY();
this.z = p.getZ();
}
/**
* Constructs new GestureEvent event with empty source and target
* @param eventType The type of the event.
* @param x The x with respect to the scene.
* @param y The y with respect to the scene.
* @param screenX The x coordinate relative to screen.
* @param screenY The y coordinate relative to screen.
* @param shiftDown true if shift modifier was pressed.
* @param controlDown true if control modifier was pressed.
* @param altDown true if alt modifier was pressed.
* @param metaDown true if meta modifier was pressed.
* @param direct true if the event was caused by direct input device. See {@link #isDirect() }
* @param inertia if represents inertia of an already finished gesture.
* @param pickResult pick result. Can be null, in this case a 2D pick result
* without any further values is constructed
* based on the scene coordinates
* @since JavaFX 8.0
*/
protected GestureEvent(final EventType eventType,
double x, double y, double screenX, double screenY,
boolean shiftDown, boolean controlDown, boolean altDown,
boolean metaDown, boolean direct, boolean inertia,
PickResult pickResult) {
this(null, null, eventType, x, y, screenX, screenY, shiftDown, controlDown,
altDown, metaDown, direct, inertia, pickResult);
}
/**
* Fills the given event by this event's coordinates recomputed to the given
* source object.
* @param newEvent Event whose coordinates are to be filled
* @param newSource Source object to compute coordinates for
*/
private void recomputeCoordinatesToSource(GestureEvent newEvent, Object newSource) {
final Point3D newCoordinates = InputEventUtils.recomputeCoordinates(
pickResult, newSource);
newEvent.x = newCoordinates.getX();
newEvent.y = newCoordinates.getY();
newEvent.z = newCoordinates.getZ();
}
/**
* {@inheritDoc}
*/
@Override
public GestureEvent copyFor(Object newSource, EventTarget newTarget) {
GestureEvent e = (GestureEvent) super.copyFor(newSource, newTarget);
recomputeCoordinatesToSource(e, newSource);
return e;
}
private transient double x;
/**
* Gets the horizontal position of the event relative to the
* origin of the event's source.
*
* @return the horizontal position of the event relative to the
* origin of the event's source.
*
* @see #isDirect()
*/
public final double getX() {
return x;
}
private transient double y;
/**
* Gets the vertical position of the event relative to the
* origin of the event's source.
*
* @return the vertical position of the event relative to the
* origin of the event's source.
*
* @see #isDirect()
*/
public final double getY() {
return y;
}
/**
* Depth z position of the event relative to the
* origin of the MouseEvent's node.
*/
private transient double z;
/**
* Depth position of the event relative to the
* origin of the MouseEvent's source.
*
* @return depth position of the event relative to the
* origin of the MouseEvent's source.
* @since JavaFX 8.0
*/
public final double getZ() {
return z;
}
private final double screenX;
/**
* Gets the absolute horizontal position of the event.
* @return the absolute horizontal position of the event
*
* @see #isDirect()
*/
public final double getScreenX() {
return screenX;
}
private final double screenY;
/**
* Gets the absolute vertical position of the event.
* @return the absolute vertical position of the event
*
* @see #isDirect()
*/
public final double getScreenY() {
return screenY;
}
private final double sceneX;
/**
* Gets the horizontal position of the event relative to the
* origin of the {@code Scene} that contains the event's source.
* If the node is not in a {@code Scene}, then the value is relative to
* the boundsInParent of the root-most parent of the event's node.
* Note that in 3D scene, this represents the flat coordinates after
* applying the projection transformations.
*
* @return the horizontal position of the event relative to the
* origin of the {@code Scene} that contains the event's source
*
* @see #isDirect()
*/
public final double getSceneX() {
return sceneX;
}
private final double sceneY;
/**
* Gets the vertical position of the event relative to the
* origin of the {@code Scene} that contains the event's source.
* If the node is not in a {@code Scene}, then the value is relative to
* the boundsInParent of the root-most parent of the event's node.
* Note that in 3D scene, this represents the flat coordinates after
* applying the projection transformations.
*
* @return the vertical position of the event relative to the
* origin of the {@code Scene} that contains the event's source
*
* @see #isDirect()
*/
public final double getSceneY() {
return sceneY;
}
private final boolean shiftDown;
/**
* Indicates whether or not the Shift modifier is down on this event.
* @return true if the Shift modifier is down on this event
*/
public final boolean isShiftDown() {
return shiftDown;
}
private final boolean controlDown;
/**
* Indicates whether or not the Control modifier is down on this event.
* @return true if the Control modifier is down on this event
*/
public final boolean isControlDown() {
return controlDown;
}
private final boolean altDown;
/**
* Indicates whether or not the Alt modifier is down on this event.
* @return true if the Alt modifier is down on this event
*/
public final boolean isAltDown() {
return altDown;
}
private final boolean metaDown;
/**
* Indicates whether or not the Meta modifier is down on this event.
* @return true if the Meta modifier is down on this event
*/
public final boolean isMetaDown() {
return metaDown;
}
private final boolean direct;
/**
* Indicates whether this gesture is caused by a direct or indirect input
* device. With direct input device the gestures are performed directly at
* the concrete coordinates, a typical example would be a touch screen.
* With indirect device the gestures are performed indirectly and usually
* mouse cursor position is used as the gesture coordinates, a typical
* example would be a track pad.
* @return true if this event is caused by a direct input device
*/
public final boolean isDirect() {
return direct;
}
private final boolean inertia;
/**
* Indicates if this event represents an inertia of an already finished
* gesture.
* @return true if this is an inertia event
*/
public boolean isInertia() {
return inertia;
}
/**
* Information about the pick if the picked {@code Node} is a
* {@code Shape3D} node and its pickOnBounds is false.
*/
private PickResult pickResult;
/**
* Returns information about the pick.
*
* @return new PickResult object that contains information about the pick
* @since JavaFX 8.0
*/
public final PickResult getPickResult() {
return pickResult;
}
/**
* Indicates whether or not the host platform common shortcut modifier is
* down on this event. This common shortcut modifier is a modifier key which
* is used commonly in shortcuts on the host platform. It is for example
* {@code control} on Windows and {@code meta} (command key) on Mac.
*
* @return {@code true} if the shortcut modifier is down, {@code false}
* otherwise
*/
public final boolean isShortcutDown() {
switch (Toolkit.getToolkit().getPlatformShortcutKey()) {
case SHIFT:
return shiftDown;
case CONTROL:
return controlDown;
case ALT:
return altDown;
case META:
return metaDown;
default:
return false;
}
}
/**
* Returns a string representation of this {@code GestureEvent} object.
* @return a string representation of this {@code GestureEvent} object.
*/
@Override public String toString() {
final StringBuilder sb = new StringBuilder("GestureEvent [");
sb.append("source = ").append(getSource());
sb.append(", target = ").append(getTarget());
sb.append(", eventType = ").append(getEventType());
sb.append(", consumed = ").append(isConsumed());
sb.append(", x = ").append(getX()).append(", y = ").append(getY())
.append(", z = ").append(getZ());
sb.append(isDirect() ? ", direct" : ", indirect");
if (isInertia()) {
sb.append(", inertia");
}
if (isShiftDown()) {
sb.append(", shiftDown");
}
if (isControlDown()) {
sb.append(", controlDown");
}
if (isAltDown()) {
sb.append(", altDown");
}
if (isMetaDown()) {
sb.append(", metaDown");
}
if (isShortcutDown()) {
sb.append(", shortcutDown");
}
sb.append(", pickResult = ").append(getPickResult());
return sb.append("]").toString();
}
private void readObject(java.io.ObjectInputStream in)
throws IOException, ClassNotFoundException {
in.defaultReadObject();
x = sceneX;
y = sceneY;
}
@Override
public EventType getEventType() {
return (EventType) super.getEventType();
}
}