/** Erases the guide and the feedback shown by the container of the elements. */
protected void eraseSourceFeedback() {
if (guideline.getParent() != null) {
guideline.getParent().remove(guideline);
}
if (_container != null) {
_container.eraseSourceFeedback(getSourceRequest());
}
ChangeBoundsRequest request = new ChangeBoundsRequest(RequestConstants.REQ_MOVE);
request.setEditParts(Collections.emptyList());
request.setSizeDelta(new Dimension(0, 0));
request.setMoveDelta(new Point(0, 0));
for (IGraphicalEditPart part : _movingShapes) {
part.eraseSourceFeedback(request);
}
ChangeBoundsRequest spRequest = new ChangeBoundsRequest(RequestConstants.REQ_RESIZE);
spRequest.setEditParts(Collections.emptyList());
spRequest.setSizeDelta(new Dimension(0, 0));
spRequest.setMoveDelta(new Point(0, 0));
for (IGraphicalEditPart sp : _subProcesses) {
sp.eraseSourceFeedback(spRequest);
}
}
/** Shows a nice guideline to show the move */
protected void showSourceFeedback() {
if (_container == null) {
return;
}
if (guideline.getParent() == null) {
addFeedback(guideline);
}
Rectangle bounds = Rectangle.SINGLETON.getCopy();
bounds.y = getCurrentPositionZoomed();
Rectangle containerBounds = _container.getFigure().getBounds().getCopy();
_container.getFigure().translateToAbsolute(containerBounds);
((DiagramEditPart) getCurrentViewer().getContents())
.getFigure()
.translateToRelative(containerBounds);
bounds.x = containerBounds.x;
bounds.height = 1;
bounds.width = containerBounds.width;
ZoomManager zoomManager =
((DiagramRootEditPart) getCurrentViewer().getRootEditPart()).getZoomManager();
bounds.performScale(zoomManager.getZoom());
guideline.setBounds(bounds);
guideline.setVisible(getState() == STATE_DRAG_IN_PROGRESS);
ChangeBoundsRequest request = new ChangeBoundsRequest(RequestConstants.REQ_MOVE);
request.setMoveDelta(((ChangeBoundsRequest) getSourceRequest()).getMoveDelta());
request.setSizeDelta(new Dimension(0, 0));
request.setEditParts(_movingShapes);
for (IGraphicalEditPart part : _movingShapes) {
part.showSourceFeedback(request);
}
ChangeBoundsRequest spRequest = new ChangeBoundsRequest(RequestConstants.REQ_RESIZE);
Point moveDelta = ((ChangeBoundsRequest) getSourceRequest()).getMoveDelta().getCopy();
Dimension spSizeDelta = new Dimension(moveDelta.x, moveDelta.y);
spRequest.setSizeDelta(spSizeDelta);
spRequest.setMoveDelta(new Point(0, 0));
spRequest.setEditParts(_subProcesses);
for (IGraphicalEditPart sp : _subProcesses) {
sp.showSourceFeedback(spRequest);
}
((DiagramEditPart) getCurrentViewer().getContents()).getRoot().refresh();
}
protected Command createNodeChangeBoundCommands(final List<ShapeEditPart> sortedNodes) {
final CompoundCommand result = new CompoundCommand();
final Iterator<ShapeEditPart> iterEditParts = sortedNodes.iterator();
while (iterEditParts.hasNext()) {
final ShapeEditPart shapeEditPart = iterEditParts.next();
final ChangeBoundsRequest request =
new ChangeBoundsRequest(org.eclipse.gef.RequestConstants.REQ_MOVE);
request.setEditParts(shapeEditPart);
final Point ptLocation = new Point(0, 0);
// the zoom.
double scale = 1.0;
if (shapeEditPart.getRoot() instanceof DiagramRootEditPart) {
final ZoomManager zoomManager =
((DiagramRootEditPart) shapeEditPart.getRoot()).getZoomManager();
scale = zoomManager.getZoom();
}
// Compute request data.
final Point ptOldLocation = shapeEditPart.getFigure().getBounds().getLocation();
final Dimension delta = ptLocation.getDifference(ptOldLocation);
request.setMoveDelta(new PrecisionPoint(delta.width * scale, delta.height * scale));
request.setLocation(new PrecisionPoint(ptLocation.x * scale, ptLocation.y * scale));
final Command cmd = this.buildCommandWrapper(request, shapeEditPart);
result.add(cmd);
}
return result;
}
/** {@inheritDoc} */
@Override
protected void updateTargetRequest() {
super.updateTargetRequest();
Dimension delta = getDragMoveDelta();
if (getSourceEditPart() instanceof GraphicalEditPart) {
Rectangle childRect = ((GraphicalEditPart) getSourceEditPart()).getFigure().getBounds();
if (getSourceEditPart().getParent() instanceof GraphicalEditPart) {
Rectangle parentRect =
((GraphicalEditPart) getSourceEditPart().getParent()).getFigure().getBounds();
IFigure fig = ((GraphicalEditPart) getSourceEditPart().getParent()).getFigure();
IFigure contentPane =
((GraphicalEditPart) getSourceEditPart().getParent()).getContentPane();
// calculate the virtual position
Rectangle virtualPosition = childRect.getCopy();
virtualPosition.x = virtualPosition.x + delta.width;
virtualPosition.y = virtualPosition.y + delta.height;
if (virtualPosition.x < 0) {
delta.width = 0 - childRect.x;
}
if (virtualPosition.y < 0) {
delta.height = 0 - childRect.y;
}
if (virtualPosition.x + virtualPosition.width + getBorder() > parentRect.width) {
delta.width = parentRect.width - childRect.width - childRect.x - getBorder();
}
if (virtualPosition.y + virtualPosition.height + 2 * getBorder() > parentRect.height) {
delta.height = parentRect.height - childRect.height - childRect.y - 2 * getBorder();
}
ChangeBoundsRequest request = (ChangeBoundsRequest) getTargetRequest();
Point moveDelta = new Point(delta.width, delta.height);
request.setMoveDelta(moveDelta);
// Very important the child element to block inside the container
// if not test first the target editPart.
// let the default algorithm if the target is not its parent.
setTargetEditPart(getSourceEditPart().getParent());
}
}
}
/** @see org.eclipse.gef.tools.SimpleDragTracker#updateSourceRequest() */
protected void updateSourceRequest() {
ChangeBoundsRequest request = (ChangeBoundsRequest) getSourceRequest();
if (originalLocation == null) {
originalLocation = getStartLocation().getCopy();
}
Dimension delta = getDragMoveDelta();
request.setConstrainedMove(getCurrentInput().isModKeyDown(MODIFIER_CONSTRAINED_MOVE));
request.setSnapToEnabled(!getCurrentInput().isModKeyDown(MODIFIER_NO_SNAPPING));
Point moveDelta = new Point(delta.width, delta.height);
request.getExtendedData().clear();
request.setMoveDelta(moveDelta);
snapPoint(request);
request.setLocation(getLocation());
request.setType(getCommandName());
}
// @unused
public static Request getNewSourceFeedbackRequest(Request request, ShapeNodeEditPart editPart) {
if (request instanceof ChangeBoundsRequest) {
ChangeBoundsRequest currRequest = (ChangeBoundsRequest) request;
Dimension oldDelta = currRequest.getSizeDelta();
Dimension newDelta =
getSizeDeltaToFitAnchors(editPart, oldDelta, PreserveAnchorsPositionCommand.PRESERVE_Y);
// Information for creating a new ChangeBoundsRequest has been taken
// from org.eclipse.gef.editpolicies.ResizableEditPolicy
ChangeBoundsRequest newRequest = new ChangeBoundsRequest();
newRequest.setMoveDelta(currRequest.getMoveDelta());
newRequest.setSizeDelta(newDelta);
newRequest.setLocation(currRequest.getLocation());
newRequest.setExtendedData(currRequest.getExtendedData());
newRequest.setResizeDirection(currRequest.getResizeDirection());
newRequest.setType(currRequest.getType());
return newRequest;
} else {
return request;
}
}
/**
* Shows or updates feedback for a change bounds request. The request is updated by the way so
* that the shape stays a square.
*
* @param request the request
*/
@Override
protected void showChangeBoundsFeedback(ChangeBoundsRequest request) {
// adapt the request for a square resize
Point move = request.getMoveDelta();
Dimension delta = request.getSizeDelta();
int dH = delta.height;
int dW = delta.width;
int signum = 0;
if (dH <= 0 && dW <= 0) {
signum = -1;
} else {
signum = 1;
}
int positiveResize = Math.max(dH, dW);
if (positiveResize <= 0) {
if (dH == 0) {
positiveResize = -dW;
} else if (dW == 0) {
positiveResize = -dH;
} else {
positiveResize = Math.min(-dH, -dW);
}
}
int newDH = signum * positiveResize;
int newDW = newDH;
int dir = request.getResizeDirection();
// adjust new position if impacted by resizing
if ((dir & PositionConstants.NORTH) > 0) {
move.y += dH - newDH;
}
if ((dir & PositionConstants.WEST) > 0) {
move.x += dW - newDW;
}
request.setMoveDelta(move);
delta.height = newDH;
delta.width = newDW;
super.showChangeBoundsFeedback(request);
}
/**
* This method can be overridden by clients to customize the snapping behavior.
*
* @param request the <code>ChangeBoundsRequest</code> from which the move delta can be extracted
* and updated
* @since 3.4
*/
protected void snapPoint(ChangeBoundsRequest request) {
Point moveDelta = request.getMoveDelta();
SnapToHelper snapToHelper =
(SnapToHelper) getConnectionEditPart().getAdapter(SnapToHelper.class);
Rectangle rect = new Rectangle(originalLocation.x, originalLocation.y, 1, 1);
if (sourceRectangle == null) {
sourceRectangle = new PrecisionRectangle(rect);
}
if (snapToHelper != null && request.isSnapToEnabled()) {
PrecisionRectangle baseRect = sourceRectangle.getPreciseCopy();
baseRect.translate(moveDelta);
PrecisionPoint preciseDelta = new PrecisionPoint(moveDelta);
snapToHelper.snapPoint(
request,
PositionConstants.HORIZONTAL | PositionConstants.VERTICAL,
new PrecisionRectangle[] {baseRect},
preciseDelta);
request.setMoveDelta(preciseDelta);
}
}
@Override
protected void updateSourceRequest() {
ChangeBoundsRequest request = (ChangeBoundsRequest) getSourceRequest();
Dimension d = getDragMoveDelta();
Point location = new Point(getLocation());
Point moveDelta = new Point(0, 0);
Dimension resizeDelta = new Dimension(0, 0);
request.setConstrainedResize(false);
request.setCenteredResize(getCurrentInput().isModKeyDown(SWT.MOD1));
if ((getResizeDirection() & PositionConstants.NORTH) != 0) {
moveDelta.y += d.height;
resizeDelta.height -= d.height;
}
if ((getResizeDirection() & PositionConstants.SOUTH) != 0) {
resizeDelta.height += d.height;
}
if ((getResizeDirection() & PositionConstants.WEST) != 0) {
moveDelta.x += d.width;
resizeDelta.width -= d.width;
}
if ((getResizeDirection() & PositionConstants.EAST) != 0) {
resizeDelta.width += d.width;
}
request.setMoveDelta(moveDelta);
request.setSizeDelta(resizeDelta);
request.setLocation(location);
request.setEditParts(getOperationSet());
request.getExtendedData().clear();
// TODO: snapping
}
private Collection<ChangeBoundsRequest> getConstrainedRegionRequests(
ChangeBoundsRequest request) {
Collection<ChangeBoundsRequest> constrainedRequests = Lists.newArrayList();
RequestQuery query = new RequestQuery(request);
Dimension sizeDelta = request.getSizeDelta().getCopy();
Point moveDelta = request.getMoveDelta().getCopy();
List<AbstractDiagramElementContainerEditPart> regionToResize = getRegionParts();
int stackDirection = getStackDirection();
// Handle first and last regions.
Object resizePropagator = request.getExtendedData().get(REGION_RESIZE_PROPAGATOR);
if (query.isResizeFromTop() && stackDirection == PositionConstants.NORTH_SOUTH
|| query.isResizeFromLeft() && stackDirection == PositionConstants.EAST_WEST) {
Option<AbstractDiagramElementContainerEditPart> firstRegionPart = getFirstRegionPart();
if (firstRegionPart.some()
&& (!request.isConstrainedResize() || resizePropagator != firstRegionPart.get())) {
ChangeBoundsRequest req = initConstrainedRequest(request);
req.setEditParts(firstRegionPart.get());
req.setSizeDelta(sizeDelta.getCopy());
constrainedRequests.add(req);
}
// shift all other regions.
regionToResize.remove(firstRegionPart.get());
if (!regionToResize.isEmpty()
&& (!request.isConstrainedResize() || !regionToResize.contains(resizePropagator))) {
ChangeBoundsRequest req = initConstrainedRequest(request);
req.setEditParts(Lists.newArrayList(regionToResize));
if (stackDirection == PositionConstants.NORTH_SOUTH) {
req.setSizeDelta(new Dimension(sizeDelta.width, 0));
req.setMoveDelta(new Point(0, -moveDelta.y));
} else if (stackDirection == PositionConstants.EAST_WEST) {
req.setSizeDelta(new Dimension(0, sizeDelta.height));
req.setMoveDelta(new Point(-moveDelta.x, 0));
}
constrainedRequests.add(req);
regionToResize.clear();
}
} else if (query.isResizeFromBottom() && stackDirection == PositionConstants.NORTH_SOUTH
|| query.isResizeFromRight() && stackDirection == PositionConstants.EAST_WEST) {
// Resize the last region.
Option<AbstractDiagramElementContainerEditPart> lastRegionPart = getLastRegionPart();
if (lastRegionPart.some()
&& (!request.isConstrainedResize() || resizePropagator != lastRegionPart.get())) {
ChangeBoundsRequest req = initConstrainedRequest(request);
req.setEditParts(lastRegionPart.get());
req.setSizeDelta(sizeDelta.getCopy());
constrainedRequests.add(req);
regionToResize.remove(lastRegionPart.get());
}
}
// Handle horizontal resize for vstacks and vertical resize for hstacks.
if (request.isConstrainedResize() && resizePropagator != null) {
regionToResize.remove(resizePropagator);
}
if (!regionToResize.isEmpty()) {
if (stackDirection == PositionConstants.NORTH_SOUTH
&& (query.isResizeFromLeft() || query.isResizeFromRight())
&& sizeDelta.width != 0) {
ChangeBoundsRequest req = initConstrainedRequest(request);
req.setEditParts(Lists.newArrayList(regionToResize));
req.setSizeDelta(new Dimension(sizeDelta.width, 0));
constrainedRequests.add(req);
} else if (stackDirection == PositionConstants.EAST_WEST
&& (query.isResizeFromTop() || query.isResizeFromBottom())
&& sizeDelta.height != 0) {
ChangeBoundsRequest req = initConstrainedRequest(request);
req.setEditParts(Lists.newArrayList(regionToResize));
req.setSizeDelta(new Dimension(0, sizeDelta.height));
constrainedRequests.add(req);
}
}
return constrainedRequests;
}