/**
* Determines whether or not the given mouse event is actually a popup trigger.
*
* @param aPoint the <em>corrected</em> mouse position, where the popup is to be shown, cannot be
* <code>null</code>;
* @param aEvent the mouse event that could be a popup trigger, cannot be <code>null</code>.
*/
private boolean handlePopupTrigger(final Point aPoint, final MouseEvent aEvent) {
final boolean popupTrigger = isCursorPopupTrigger(aEvent);
if (popupTrigger) {
JPopupMenu contextMenu = createCursorPopup(aPoint, aEvent.getLocationOnScreen());
if (contextMenu != null) {
contextMenu.show(aEvent.getComponent(), aEvent.getX(), aEvent.getY());
// Mark the event as consumed...
aEvent.consume();
}
}
return popupTrigger;
}
/** {@inheritDoc} */
@Override
public void mouseDragged(final MouseEvent aEvent) {
final MouseEvent event = convertEvent(aEvent);
final Point point = event.getPoint();
// Update the selected channel while dragging...
this.controller.setSelectedChannel(point);
if (getModel().isCursorMode() && (this.movingCursor >= 0)) {
this.controller.moveCursor(this.movingCursor, getCursorDropPoint(point));
aEvent.consume();
} else {
if ((this.lastClickPosition == null)
&& ((aEvent.getModifiersEx() & InputEvent.BUTTON1_DOWN_MASK) != 0)) {
this.lastClickPosition = new Point(point);
}
final JScrollPane scrollPane =
getAncestorOfClass(JScrollPane.class, (Component) aEvent.getSource());
if ((scrollPane != null) && (this.lastClickPosition != null)) {
final JViewport viewPort = scrollPane.getViewport();
final Component signalView = this.controller.getSignalDiagram().getSignalView();
boolean horizontalOnly = (aEvent.getModifiersEx() & InputEvent.ALT_DOWN_MASK) != 0;
boolean verticalOnly =
horizontalOnly && ((aEvent.getModifiersEx() & InputEvent.SHIFT_DOWN_MASK) != 0);
int dx = aEvent.getX() - this.lastClickPosition.x;
int dy = aEvent.getY() - this.lastClickPosition.y;
Point scrollPosition = viewPort.getViewPosition();
int newX = scrollPosition.x;
if (!verticalOnly) {
newX -= dx;
}
int newY = scrollPosition.y;
if (verticalOnly || !horizontalOnly) {
newY -= dy;
}
int diagramWidth = signalView.getWidth();
int viewportWidth = viewPort.getWidth();
int maxX = diagramWidth - viewportWidth - 1;
scrollPosition.x = Math.max(0, Math.min(maxX, newX));
int diagramHeight = signalView.getHeight();
int viewportHeight = viewPort.getHeight();
int maxY = diagramHeight - viewportHeight;
scrollPosition.y = Math.max(0, Math.min(maxY, newY));
viewPort.setViewPosition(scrollPosition);
}
// Use UNCONVERTED/ORIGINAL mouse event!
handleZoomRegion(aEvent, this.lastClickPosition);
}
}
/** {@inheritDoc} */
@Override
public void mouseClicked(final MouseEvent aEvent) {
// Ensure the focus is moved to the main signal diagram component...
getSignalDiagram().requestFocusInWindow();
if (getModel().isCursorMode() && (aEvent.getClickCount() == 2)) {
final MouseEvent event = convertEvent(aEvent);
final Cursor hoveredCursor = findCursor(event.getPoint());
if (hoveredCursor != null) {
editCursorProperties(hoveredCursor);
// Consume the event to stop further processing...
aEvent.consume();
}
}
}
/**
* @param aEvent the event to test, may be <code>null</code>.
* @return
*/
private boolean isCursorHover(final MouseEvent aEvent) {
if (!isCursorPopupTrigger(aEvent)) {
return false;
}
final Point point = aEvent.getPoint();
return (findCursor(point) != null);
}
/**
* @param aEvent
* @param aStartPoint
*/
protected void handleZoomRegion(final MouseEvent aEvent, final Point aStartPoint) {
// For now, disabled by default as it isn't 100% working yet...
if (Boolean.FALSE.equals(Boolean.valueOf(System.getProperty("zoomregionenabled", "false")))) {
return;
}
final JComponent source = (JComponent) aEvent.getComponent();
final boolean dragging = (aEvent.getID() == MouseEvent.MOUSE_DRAGGED);
final GhostGlassPane glassPane =
(GhostGlassPane) SwingUtilities.getRootPane(source).getGlassPane();
Rectangle viewRect;
final JScrollPane scrollPane =
SwingComponentUtils.getAncestorOfClass(JScrollPane.class, source);
if (scrollPane != null) {
final JViewport viewport = scrollPane.getViewport();
viewRect = SwingUtilities.convertRectangle(viewport, viewport.getVisibleRect(), glassPane);
} else {
viewRect = SwingUtilities.convertRectangle(source, source.getVisibleRect(), glassPane);
}
final Point start = SwingUtilities.convertPoint(source, aStartPoint, glassPane);
final Point current = SwingUtilities.convertPoint(source, aEvent.getPoint(), glassPane);
if (dragging) {
if (!glassPane.isVisible()) {
glassPane.setVisible(true);
glassPane.setRenderer(new RubberBandRenderer(), start, current, viewRect);
} else {
glassPane.updateRenderer(start, current, viewRect);
}
glassPane.repaintPartially();
} else
/* if ( !dragging ) */
{
// Fire off a signal to the zoom controller to do its job...
this.controller.getZoomController().zoomRegion(aStartPoint, aEvent.getPoint());
glassPane.setVisible(false);
}
}
/** {@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));
}
/** {@inheritDoc} */
@Override
public void mouseReleased(final MouseEvent aEvent) {
final MouseEvent event = convertEvent(aEvent);
final Point point = event.getPoint();
if (!isCursorHover(event)) {
setMouseCursor(event, null);
}
if (!handlePopupTrigger(point, aEvent)) {
this.movingCursor = -1;
}
if ((aEvent.getModifiersEx() & InputEvent.BUTTON1_MASK) != 0) {
// Use UNCONVERTED/ORIGINAL mouse event!
handleZoomRegion(aEvent, this.lastClickPosition);
this.lastClickPosition = null;
}
}
/** {@inheritDoc} */
@Override
public void mousePressed(final MouseEvent aEvent) {
final MouseEvent event = convertEvent(aEvent);
final Point point = event.getPoint();
if (!handlePopupTrigger(point, aEvent)) {
if (getModel().isCursorMode()) {
Cursor hoveredCursor = findCursor(point);
if (hoveredCursor != null) {
this.movingCursor = hoveredCursor.getIndex();
setMouseCursor(aEvent, SignalView.CURSOR_MOVE_CURSOR);
} else {
this.movingCursor = -1;
}
}
if ((aEvent.getModifiersEx() & InputEvent.BUTTON1_DOWN_MASK) != 0) {
this.lastClickPosition = point;
}
}
}
/**
* Returns whether or not the 'edit cursor' popup is to be shown.
*
* @param aEvent the event to test, may be <code>null</code>.
* @return <code>true</code> if the 'edit cursor' popup is to be shown, <code>false</code>
* otherwise.
*/
private boolean isCursorPopupTrigger(final MouseEvent aEvent) {
return !aEvent.isConsumed() && aEvent.isPopupTrigger();
}
/**
* Sets the current mouse cursor.
*
* @param aMouseCursor a mouse cursor, can be <code>null</code> to use the default cursor.
*/
protected final void setMouseCursor(final MouseEvent aEvent, final java.awt.Cursor aMouseCursor) {
aEvent.getComponent().setCursor(aMouseCursor);
}
/**
* @param aEvent
* @return
*/
protected final MouseEvent convertEvent(final MouseEvent aEvent) {
JComponent view = SwingComponentUtils.getDeepestComponentAt(aEvent);
return SwingUtilities.convertMouseEvent(aEvent.getComponent(), aEvent, view);
}