/**
* Forwards mouse events to the plug-ins.<br>
*
* @author Sebastian Ebers
*/
public class EventDispatcher {
private static final Logger log = SpyglassLoggerFactory.getLogger(EventDispatcher.class);
private PluginManager pluginManager;
private DrawingArea drawingArea;
// --------------------------------------------------------------------------------
/**
* Constructor
*
* @param pluginManager the instance which manages the plug-ins
* @param drawingArea the area where the plug-ins' contents are visualized
*/
public EventDispatcher(final PluginManager pluginManager, final DrawingArea drawingArea) {
this.pluginManager = pluginManager;
this.drawingArea = drawingArea;
}
// --------------------------------------------------------------------------------
/**
* Forwards a event to the first plug-in which can handle it.
*
* @param e the event to be forwarded
*/
public void handleEvent(final MouseEvent e) {
final List<Plugin> plugins = pluginManager.getVisibleActivePlugins();
// this has to be done in reverse order since the "ordinary" order is used for painting
// which means that the topmost element is actually the last element in the list
for (int i = plugins.size() - 1; i >= 0; i--) {
try {
// for the moment only mouse events are dispatched to plug-ins
if (plugins.get(i).handleEvent(e, drawingArea)) {
return;
}
} catch (final Exception e1) {
log.error("Plugin " + plugins.get(i) + " threw an exception while handling an event", e1);
}
}
}
}
public class RecordRecordAction extends Action {
private static final Logger log = SpyglassLoggerFactory.getLogger(RecordRecordAction.class);
private Spyglass spyglass;
private boolean isRecording = false;
private final ImageDescriptor imageDescriptorRecording = getImageDescriptor("record_record.png");
private final ImageDescriptor imageDescriptorPausing = getImageDescriptor("record_pause.png");
private Thread listenerThread;
public RecordRecordAction(final Spyglass spyglass) {
this.spyglass = spyglass;
}
@Override
public void run() {
if (spyglass.getPacketRecorder() == null) {
MessageDialog.openError(
null, "No recorder available", "The input type you selected does not support recording");
isRecording = false;
} else {
isRecording = spyglass.getPacketRecorder().setRecording(!isRecording);
}
setText(isRecording ? "Pause" : "Record");
setToolTipText(isRecording ? "Pause" : "Record");
setImageDescriptor(isRecording ? imageDescriptorPausing : imageDescriptorRecording);
if (isRecording) {
final Thread listenerThread =
new Thread() {
@Override
public void run() {
while (!isInterrupted()) {
final PacketRecorder rec = spyglass.getPacketRecorder();
if (rec != null) {
isRecording = rec.isRecord();
Display.getDefault()
.asyncExec(
new Runnable() {
public void run() {
setText(isRecording ? "Pause" : "Record");
setToolTipText(isRecording ? "Pause" : "Record");
setImageDescriptor(
isRecording ? imageDescriptorPausing : imageDescriptorRecording);
}
});
}
try {
sleep(2000);
} catch (final InterruptedException e) {
// TODO Auto-generated catch block
log.warn(e, e);
interrupt();
}
}
}
};
listenerThread.setDaemon(true);
listenerThread.start();
} else {
if (listenerThread != null) {
listenerThread.interrupt();
}
}
log.debug("Pressed button RECORD_RECORD.");
};
@Override
public String getToolTipText() {
return isRecording ? "Pause recording" : "Start recording";
}
@Override
public String getText() {
return isRecording ? "Pause" : "Record";
}
@Override
public ImageDescriptor getImageDescriptor() {
return isRecording ? imageDescriptorPausing : imageDescriptorRecording;
}
}
public class Grid extends DrawingObject {
private static Logger log = SpyglassLoggerFactory.getLogger(Grid.class);
private int gridElementHeight;
private int numCols;
private int lineWidth;
private int gridElementWidth;
private int numRows;
@Override
public void draw(final GC gc) {
final Rectangle clipping = gc.getClipping();
final Color color = new Color(gc.getDevice(), getColor());
gc.setLineWidth(lineWidth);
gc.setForeground(color);
final AbsolutePosition pos = getPosition();
AbsolutePosition origin, dest;
PixelPosition pxOrigin, pxDest;
int originX, originY, destX, destY;
int x1, x2, y1, y2;
originX = pos.x;
destX = originX + (gridElementWidth * numCols);
for (int row = 0; row <= numRows; row++) {
originY = destY = pos.y + (row * gridElementHeight);
origin = new AbsolutePosition(originX, originY, 0);
dest = new AbsolutePosition(destX, destY, 0);
pxOrigin = getDrawingArea().absPoint2PixelPoint(origin);
pxDest = getDrawingArea().absPoint2PixelPoint(dest);
if ((pxOrigin.y >= clipping.y) && (pxOrigin.y <= (clipping.y + clipping.height))) {
x1 = Math.max(clipping.x, pxOrigin.x);
y1 = pxOrigin.y;
x2 = Math.min((clipping.x + clipping.width), pxDest.x);
y2 = pxDest.y;
gc.drawLine(x1, y1, x2, y2);
}
}
originY = pos.y;
destY = originY + (gridElementHeight * numRows);
for (int col = 0; col <= numCols; col++) {
originX = destX = pos.x + (col * gridElementWidth);
origin = new AbsolutePosition(originX, originY, 0);
dest = new AbsolutePosition(destX, destY, 0);
pxOrigin = getDrawingArea().absPoint2PixelPoint(origin);
pxDest = getDrawingArea().absPoint2PixelPoint(dest);
if ((pxOrigin.x >= clipping.x) && (pxOrigin.x <= (clipping.x + clipping.width))) {
x1 = pxOrigin.x;
y1 = Math.max(clipping.y, pxDest.y);
x2 = pxDest.x;
y2 = Math.min((clipping.y + clipping.height), pxOrigin.y);
gc.drawLine(x1, y1, x2, y2);
}
}
color.dispose();
}
public synchronized void setGridElementHeight(final int gridElementHeight) {
this.gridElementHeight = gridElementHeight;
markBoundingBoxDirty();
}
public synchronized void setGridElementWidth(final int gridElementWidth) {
this.gridElementWidth = gridElementWidth;
markBoundingBoxDirty();
}
public synchronized void setLineWidth(final int lineWidth) {
this.lineWidth = lineWidth;
markContentDirty();
}
public synchronized void setNumCols(final int numCols) {
this.numCols = numCols;
markBoundingBoxDirty();
}
public synchronized void setNumRows(final int numRows) {
this.numRows = numRows;
markBoundingBoxDirty();
}
@Override
protected AbsoluteRectangle calculateBoundingBox() {
return new AbsoluteRectangle(
getPosition(), gridElementWidth * numCols, gridElementHeight * numRows);
}
}
/**
* ObjectPainter plugin
*
* @author Dariush Forouher
*/
public class ObjectPainterPlugin extends BackgroundPainterPlugin implements NeedsMetric {
static Logger log = SpyglassLoggerFactory.getLogger(ObjectPainterPlugin.class);
@Element(name = "parameters")
private final ObjectPainterXMLConfig config = new ObjectPainterXMLConfig();;
/** Timer used for updating the trajectories */
private Timer timer = null;
/** List of trajectories. Each trajectory is a TimerTask in our timer. */
final List<Trajectory> trajectories = Collections.synchronizedList(new ArrayList<Trajectory>());
final Layer layer = Layer.Factory.createQuadTreeLayer();
// --------------------------------------------------------------------------------
/** Constructor */
public ObjectPainterPlugin() {
super(true);
}
@Override
public PluginPreferencePage<ObjectPainterPlugin, ObjectPainterXMLConfig> createPreferencePage(
final PluginPreferenceDialog dialog, final Spyglass spyglass) {
return new ObjectPainterPreferencePage(dialog, spyglass, this);
}
public static PluginPreferencePage<ObjectPainterPlugin, ObjectPainterXMLConfig>
createTypePreferencePage(final PluginPreferenceDialog dialog, final Spyglass spyglass) {
return new ObjectPainterPreferencePage(dialog, spyglass);
}
public synchronized SortedSet<DrawingObject> getDrawingObjects(final AbsoluteRectangle area) {
return layer.getDrawingObjects(area);
}
public static String getHumanReadableName() {
return "ObjectPainter";
}
@Override
public ObjectPainterXMLConfig getXMLConfig() {
return config;
}
@Override
public synchronized void init(final PluginManager manager) throws Exception {
super.init(manager);
timer = new Timer("ObjectPainter-Timer");
}
@Override
protected void processPacket(final SpyglassPacket packet) {
// Requirement for a trajectory packet
if (!(packet instanceof Int16ListPacket)) {
return;
}
if (!config.containsSemanticType(packet.getSemanticType())) {
return;
}
final Int16ListPacket p = (Int16ListPacket) packet;
final List<TrajectorySection> list;
try {
if (config.isPacketType3D()) {
list = p.getTrajectory3D();
} else {
list = p.getTrajectory2D();
}
} catch (final ParseException e) {
log.error("Could not extract trajectory information from the packet!", e);
return;
}
// DEADLOCK warning: The constructor of Trajectory creates an SWT image, which tries to aquire
// the
// SWT display lock. To avoid a AB-BA deadlock, we must avoid creating the constructor with the
// plugin-lock hold.
final Trajectory t = new Trajectory(this, list, config.getImageFileName());
synchronized (this) {
this.trajectories.add(t);
timer.schedule(t, 0, config.getUpdateInterval());
}
}
@Override
protected synchronized void resetPlugin() {
// make a copy so trajectories can remove themselves
final List<Trajectory> list = new ArrayList<Trajectory>(trajectories);
// remove all trajectories
for (final Trajectory t : list) {
t.cancel();
}
assert trajectories.size() == 0;
this.layer.clear();
}
@Override
public synchronized Set<DrawingObject> getAutoZoomDrawingObjects() {
return layer.getDrawingObjects();
}
@Override
public synchronized void shutdown() throws Exception {
super.shutdown();
// make a copy so trajectories can remove themselves
final List<Trajectory> list = new ArrayList<Trajectory>(trajectories);
// remove all trajectories
for (final Trajectory t : list) {
t.cancel();
}
assert trajectories.size() == 0;
timer.cancel();
}
/* Methods needed for scope-reasons */
void fireDrawingObjectAddedInternal(final DrawingObject dob) {
fireDrawingObjectAdded(dob);
}
void fireDrawingObjectRemovedInternal(final DrawingObject dob) {
fireDrawingObjectRemoved(dob);
}
}
