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

@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));
		}
	};
}
 

private void decreaseHeight() {
	ChangeBoundsRequest setRequest1 = new ChangeBoundsRequest(RequestConstants.REQ_RESIZE) ; 
	List<EditPart> epToMove = new ArrayList<EditPart>();
	epToMove.add(gep);
	setRequest1.setEditParts(epToMove);
	setRequest1.setResizeDirection(PositionConstants.NORTH);
	setRequest1.setSizeDelta(new Dimension(0,-150));
	gep.getDiagramEditDomain().getDiagramCommandStack().execute(gep.getCommand(setRequest1));
	for(Object o : gep.getChildren()){
		if(o instanceof CustomPoolCompartmentEditPart){
			for(CustomLaneEditPart lane : ((CustomPoolCompartmentEditPart)o).getPoolLanes()){
				lane.refresh();
			}
		}
		
	}
	
}
 

private void increaseHeight() {
	ChangeBoundsRequest setRequest1 = new ChangeBoundsRequest(RequestConstants.REQ_RESIZE) ; 
	List<EditPart> epToMove = new ArrayList<EditPart>();
	epToMove.add(gep);
	setRequest1.setEditParts(epToMove);
	setRequest1.setResizeDirection(PositionConstants.SOUTH);
	setRequest1.setSizeDelta(new Dimension(0,150));
	gep.getDiagramEditDomain().getDiagramCommandStack().execute(gep.getCommand(setRequest1));
	for(Object o : gep.getChildren()){
		if(o instanceof CustomPoolCompartmentEditPart){
			for(CustomLaneEditPart lane : ((CustomPoolCompartmentEditPart)o).getPoolLanes()){
				lane.refresh();
			}
		}
		
	}
}
 

private void increaseWidth() {
	ChangeBoundsRequest setRequest1 = new ChangeBoundsRequest(RequestConstants.REQ_RESIZE) ; 
	List<EditPart> epToMove = new ArrayList<EditPart>();
	epToMove.add(gep);
	for(Object o : gep.getChildren()){
		if(o instanceof CustomPoolCompartmentEditPart){
			for(CustomLaneEditPart lane : ((CustomPoolCompartmentEditPart)o).getPoolLanes()){
				epToMove.add(lane);
			}
		}
		
	}
	setRequest1.setEditParts(epToMove);
	setRequest1.setResizeDirection(PositionConstants.EAST);
	setRequest1.setSizeDelta(new Dimension(150,0));
	gep.getDiagramEditDomain().getDiagramCommandStack().execute(gep.getCommand(setRequest1));
}
 

protected void enforceConstraintsForResize(ChangeBoundsRequest request) {
	super.enforceConstraintsForResize(request);
	final IFigure figure = getHostFigure();
	Dimension prefSize = figure.getPreferredSize().getCopy();
	figure.translateToAbsolute(prefSize);
	Rectangle bounds = getOriginalBounds();
	bounds = request.getTransformedRectangle(bounds);
	if (bounds.width < prefSize.width) {
		request.getSizeDelta().width = request.getSizeDelta().width + (prefSize.width - bounds.width);
	}
	if (bounds.height < prefSize.height) {
		request.getSizeDelta().height = request.getSizeDelta().height + (prefSize.height - bounds.height);
	}
	request.setSizeDelta(request.getSizeDelta());
}
 

/**
 * Ensures size constraints (by default minimum and maximum) are respected
 * by the given request. May be overwritten by clients to enforce additional
 * constraints.
 * 
 * @param changeBoundsRequest
 *            The request to validate
 * @since 3.7
 */
protected void enforceConstraintsForResize(
		ChangeBoundsRequest changeBoundsRequest) {
	// adjust request, so that minimum and maximum size constraints are
	// respected
	if (owner != null) {
		PrecisionRectangle originalConstraint = new PrecisionRectangle(
				getOriginalBounds());
		owner.getFigure().translateToAbsolute(originalConstraint);
		PrecisionRectangle manipulatedConstraint = new PrecisionRectangle(
				changeBoundsRequest
						.getTransformedRectangle(originalConstraint));
		owner.getFigure().translateToRelative(manipulatedConstraint);
		// validate constraint (maximum and minimum size are regarded to be
		// 'normalized', i.e. relative to this figure's bounds coordinates).
		manipulatedConstraint.setSize(Dimension.max(
				manipulatedConstraint.getSize(),
				getMinimumSizeFor(changeBoundsRequest)));
		manipulatedConstraint.setSize(Dimension.min(
				manipulatedConstraint.getSize(),
				getMaximumSizeFor(changeBoundsRequest)));
		// translate back to absolute
		owner.getFigure().translateToAbsolute(manipulatedConstraint);
		Dimension newSizeDelta = manipulatedConstraint.getSize()
				.getShrinked(originalConstraint.getSize());
		changeBoundsRequest.setSizeDelta(newSizeDelta);
	}
}
 

/**
 * Resizes a GraphicalEditPart
 * 
 * @param graphEP
 *            - The GraphicalEditPart that is to be resized
 * @param new_width
 *            - The new width of the EditPart
 * @param new_height
 *            - The new height of the EditPart
 */
public static void resizeGraphicalEditPart(GraphicalEditPart graphEP, int new_width, int new_height) {
	Dimension figuredim = graphEP.getFigure().getSize();
	ChangeBoundsRequest resize_req = new ChangeBoundsRequest(RequestConstants.REQ_RESIZE);
	resize_req.setSizeDelta(new Dimension(new_width - figuredim.width(), new_height - figuredim.height()));
	resize_req.setEditParts(graphEP);

	Command cmd = graphEP.getCommand(resize_req);
	if (cmd != null)
		cmd.execute();
}
 

/**
 * 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);
	}
}
 

/**
 * Creates the initial request,
 * overridden to use a ChangeBoundsRequest.
 */
@Override
protected Request createSourceRequest() {
 ChangeBoundsRequest request = new ChangeBoundsRequest(getCommandName());
 request.setSizeDelta(new Dimension(0, 0));
 return request;
}
 

/**
 * 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);
	}
}
 

/**
 * Creates the initial request,
 * overridden to use a ChangeBoundsRequest.
 */
@Override
protected Request createSourceRequest() {
	ChangeBoundsRequest request = new ChangeBoundsRequest(getCommandName());
	request.setSizeDelta(new Dimension(0, 0));
	return request;
}
 

public static void resizeActivitiesFigure(final IGraphicalEditPart parentEp, final String text) {

        final int lineNumber = text.length() / LINE_LENGTH;

        final ChangeBoundsRequest req = new ChangeBoundsRequest(RequestConstants.REQ_RESIZE);

        final int currentWidth = parentEp.getFigure().getSize().width;
        final int defaultWidth = parentEp.getFigure().getPreferredSize().width;
        final int withDeltaFromDefault = currentWidth - defaultWidth;

        final int currentHeight = parentEp.getFigure().getSize().height;
        final int defaultHeight = parentEp.getFigure().getPreferredSize().height;
        final int heightDeltaFromDefault = currentHeight - defaultHeight;

        req.setSizeDelta(new Dimension(20 * lineNumber - withDeltaFromDefault, 10 * lineNumber - heightDeltaFromDefault));
        req.setConstrainedResize(true);
        req.setCenteredResize(true);
        req.setResizeDirection(PositionConstants.CENTER);
        req.setEditParts(parentEp);
        // avoid to perform request on element creation (figure have no size)
        if (currentWidth > 0 && currentHeight > 0 && req.getSizeDelta().width > 0 && req.getSizeDelta().height > 0) {
            final Command cmd = parentEp.getCommand(req);
            if (cmd != null) {
                parentEp.getDiagramEditDomain().getDiagramCommandStack().execute(cmd);
            }
        }

    }
 

/**
* 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;
		}
	};
}