/**
* Finds the cursor under the given point.
*
* @param aPoint the coordinate of the potential cursor, cannot be <code>null</code>.
* @return the cursor index, or -1 if not found.
*/
protected final Cursor findCursor(final Point aPoint) {
final SignalDiagramModel model = getModel();
final long refIdx = model.locationToTimestamp(aPoint);
final double snapArea = CURSOR_SENSITIVITY_AREA / model.getZoomFactor();
for (Cursor cursor : model.getDefinedCursors()) {
if (cursor.inArea(refIdx, snapArea)) {
return cursor;
}
}
return null;
}
/** {@inheritDoc} */
@Override
public void mouseMoved(final MouseEvent aEvent) {
final MouseEvent event = convertEvent(aEvent);
final Point point = event.getPoint();
final SignalDiagramModel model = getModel();
if (model.isCursorMode()) {
final Cursor hoveredCursor = findCursor(point);
if (hoveredCursor != null) {
setMouseCursor(aEvent, CURSOR_MOVE_CURSOR);
aEvent.consume();
} else {
setMouseCursor(aEvent, null);
aEvent.consume();
}
}
setToolTipText(ViewUtils.getToolTipText(getModel(), point));
}
/**
* Determines what tooltip is to be displayed.
*
* @param aPoint a current mouse location, cannot be <code>null</code>.
* @return a tooltip text, never <code>null</code>.
*/
public static String getToolTipText(final SignalDiagramModel aModel, final Point aPoint) {
final boolean hasTimingData = aModel.hasTimingData();
return formatReference(
hasTimingData,
hasTimingData ? aModel.getTimestamp(aPoint.x) : aModel.locationToSampleIndex(aPoint));
}
/**
* Determines what tooltip is to be displayed.
*
* @param aPoint a current mouse location, cannot be <code>null</code>.
* @return a tooltip text, never <code>null</code>.
*/
public static String getToolTipText(final SignalDiagramModel aModel, final double aRefTime) {
return formatReference(aModel.hasTimingData(), aRefTime);
}