Java Code Examples for org.eclipse.gef.requests.ChangeBoundsRequest#setMoveDelta()

@Override
protected ResizeTracker getResizeTracker(int direction) {

	return new ResizeTracker((GraphicalEditPart) getHost(), direction) {
		@Override
		protected void enforceConstraintsForResize(ChangeBoundsRequest request) {
			Rectangle locationAndSize = getOriginalBounds();
			
			final Rectangle origRequestedBounds = request.getTransformedRectangle(locationAndSize);
			final Rectangle modified = origRequestedBounds.getCopy();
			checkAndPrepareConstraint(request, modified);
			Dimension newDelta = new Dimension(modified.width - locationAndSize.width,
					modified.height - locationAndSize.height);
			request.setSizeDelta(newDelta);
			final Point moveDelta = request.getMoveDelta();
			request.setMoveDelta(new Point(moveDelta.x - origRequestedBounds.x + modified.x,
					moveDelta.y - origRequestedBounds.y + modified.y));
		}
	};
}
 

protected void enforceConstraintForMove(ChangeBoundsRequest request) {
	Rectangle relativeBounds = getOriginalBounds();
	PrecisionRectangle manipulatedConstraint = new PrecisionRectangle(
			 request.getTransformedRectangle(relativeBounds));
	getHostFigure().translateToRelative(manipulatedConstraint);
	
	manipulatedConstraint.setX(Math.max(0, manipulatedConstraint.x));
	manipulatedConstraint.setY(Math.max(0, manipulatedConstraint.y));
	
	getHostFigure().translateToAbsolute(manipulatedConstraint);
	
	Dimension difference = manipulatedConstraint.getLocation().getDifference(originalBounds.getLocation());
	request.setMoveDelta(new Point(difference.width, difference.height));
}
 

/**
 * Moves a GraphicalEditPart to the given location
 * 
 * @param graphEP
 *            - The GraphicalEditPart
 * @param new_X
 *            - The new x coordinate
 * @param new_Y
 *            - The new y coordinate
 */
public static void moveGraphicalEditPart(GraphicalEditPart graphEP, int new_X, int new_Y) {
	Rectangle figurebounds = graphEP.getFigure().getBounds();
	ChangeBoundsRequest move_req = new ChangeBoundsRequest(RequestConstants.REQ_MOVE);
	move_req.setMoveDelta(new Point(new_X - figurebounds.x(), new_Y - figurebounds.y()));
	move_req.setEditParts(graphEP);

	Command cmd = graphEP.getCommand(move_req);
	if (cmd != null && cmd.canExecute())
		cmd.execute();
}
 

private void showAttachedPartsFeedback( ChangeBoundsRequest request )
{
	ChangeBoundsRequest req = new ChangeBoundsRequest( request.getType( ) );
	req.setEditParts( getAttachedEditParts( ) );

	if ( getGuideEditPart( ).isHorizontal( ) )
		req.setMoveDelta( new Point( 0, request.getMoveDelta( ).y ) );
	else
		req.setMoveDelta( new Point( request.getMoveDelta( ).x, 0 ) );

	Iterator i = getAttachedEditParts( ).iterator( );

	while ( i.hasNext( ) )
		( (EditPart) i.next( ) ).showSourceFeedback( req );
}
 

/**
 * 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);
	}
}
 

/**
 * 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);
	}
}
 

@Override
protected Command getMoveCommand(final ChangeBoundsRequest request) {
    if (request.getEditParts() != null && !request.getEditParts().isEmpty() && request.getEditParts().get(0) instanceof CustomLaneEditPart) {
        return null;// DON'T MOVE A LANE
    }

    if (!request.getEditParts().isEmpty() && request.getEditParts().get(0) instanceof CustomSubProcessEvent2EditPart && checkOverlapOtherFigures(request)
            && request.getEditParts() != null) {
        return null; // DON'T MOVE A SUBPROCESS EVENT IF LOCATION NOT VALID
    }

    final CompoundCommand cc = new CompoundCommand("Move");
    cc.add(super.getMoveCommand(request));
    if (request.getEditParts() != null && !request.getEditParts().isEmpty()) {
        for (final Object ep : request.getEditParts()) {
            if (ep instanceof SubProcessEvent2EditPart) {
                for (final Object c : ((SubProcessEvent2EditPart) ep).getChildren()) {
                    if (c instanceof CustomSubprocessEventCompartmentEditPart) {
                        final ChangeBoundsRequest childRequest = new ChangeBoundsRequest(REQ_MOVE_CHILDREN);
                        final List eps = new ArrayList();
                        for (final Object child : ((CustomSubprocessEventCompartmentEditPart) c).getChildren()) {
                            eps.add(child);
                        }
                        childRequest.setEditParts(eps);
                        childRequest.setMoveDelta(request.getMoveDelta());
                        final HashMap<Object, Object> map = new HashMap<Object, Object>();
                        map.put(MOVE_COMPARTMENT_CHILDREN, MOVE_COMPARTMENT_CHILDREN);
                        childRequest.setExtendedData(map);
                        if (!eps.isEmpty()) {
                            cc.add(((CustomSubprocessEventCompartmentEditPart) c).getCommand(childRequest));
                        }
                    }
                }
            }
        }
    }
    return cc.unwrap();

}
 

/**
* Shows a nice guideline to show the move to
* the right or the left.
*/
protected void showSourceFeedback() {
 if (_container == null) {
	 return;
 }
 if (guideline.getParent() == null) {
	 addFeedback(guideline);
 }
 Rectangle bounds = Rectangle.SINGLETON.getCopy();
 bounds.x = getCurrentPositionZoomed();

 Rectangle containerBounds = _container.getFigure().getBounds().getCopy();
 _container.getFigure().translateToAbsolute(containerBounds);

 ((DiagramEditPart) getCurrentViewer().getContents())
 .getFigure().translateToRelative(containerBounds);
 bounds.y = containerBounds.y;
 bounds.width = 1;
 bounds.height = containerBounds.height;

 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();
}
 

/**
 * 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();
}
 

@Override
protected DragTracker createDragTracker() {
	return new ResizeTracker(getOwner(), cursorDirection){
		@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);

			if (getOwner() != null) {

				if(isContrained){
					request.setConstrainedResize(true);
					int origHeight = getOwner().getFigure().getBounds().height;
					int origWidth = getOwner().getFigure().getBounds().width;
					float ratio = 1;

					if (origWidth != 0 && origHeight != 0)
						ratio = ((float) origHeight / (float) origWidth);

					if (getResizeDirection() == PositionConstants.SOUTH_EAST) {
						if (d.height > (d.width * ratio))
							d.width = (int) (d.height / ratio);
						else
							d.height = (int) (d.width * ratio);
					} else if (getResizeDirection() == PositionConstants.NORTH_WEST) {
						if (d.height < (d.width * ratio))
							d.width = (int) (d.height / ratio);
						else
							d.height = (int) (d.width * ratio);
					} else if (getResizeDirection() == PositionConstants.NORTH_EAST) {
						if (-(d.height) > (d.width * ratio))
							d.width = -(int) (d.height / ratio);
						else
							d.height = -(int) (d.width * ratio);
					} else if (getResizeDirection() == PositionConstants.SOUTH_WEST) {
						if (-(d.height) < (d.width * ratio))
							d.width = -(int) (d.height / ratio);
						else
							d.height = -(int) (d.width * ratio);
					}
				}
			}else{
				request.setConstrainedResize(false);
			}

			request.setCenteredResize(getCurrentInput().isModKeyDown(SWT.MOD1));

			if ((getResizeDirection() & PositionConstants.NORTH) != 0) {
				if (getCurrentInput().isControlKeyDown()) {
					resizeDelta.height -= d.height;
				}
				moveDelta.y += d.height;
				resizeDelta.height -= d.height;
			}
			if ((getResizeDirection() & PositionConstants.SOUTH) != 0) {
				if (getCurrentInput().isControlKeyDown()) {
					moveDelta.y -= d.height;
					resizeDelta.height += d.height;
				}
				resizeDelta.height += d.height;
			}
			if ((getResizeDirection() & PositionConstants.WEST) != 0) {
				if (getCurrentInput().isControlKeyDown()) {
					resizeDelta.width -= d.width;
				}
				moveDelta.x += d.width;
				resizeDelta.width -= d.width;
			}
			if ((getResizeDirection() & PositionConstants.EAST) != 0) {
				if (getCurrentInput().isControlKeyDown()) {
					moveDelta.x -= d.width;
					resizeDelta.width += d.width;
				}
				resizeDelta.width += d.width;
			}

			request.setMoveDelta(moveDelta);
			request.setSizeDelta(resizeDelta);
			request.setLocation(location);
			request.setEditParts(getOperationSet());

			request.getExtendedData().clear();
		}

		@Override
		protected List<IGraphicalEditPart> createOperationSet() {
			ArrayList<IGraphicalEditPart> res = new ArrayList<IGraphicalEditPart>();
			for (Object selection : getCurrentViewer().getSelectedEditParts()) {
				if (isResizable((IGraphicalEditPart)selection)) {
					res.add((IGraphicalEditPart)selection);
				}
			}
			return res;
		}
	};
}