protected void showChangeBoundsFeedback(ChangeBoundsRequest request) {
IFigure feedback = getDragSourceFeedbackFigure();
PrecisionRectangle rect = new PrecisionRectangle(getInitialFeedbackBounds().getCopy());
getHostFigure().translateToAbsolute(rect);
rect.translate(request.getMoveDelta());
rect.resize(request.getSizeDelta());
IFigure f = getHostFigure();
Dimension min = f.getMinimumSize().getCopy();
Dimension max = f.getMaximumSize().getCopy();
IMapMode mmode = MapModeUtil.getMapMode(f);
min.height = mmode.LPtoDP(min.height);
min.width = mmode.LPtoDP(min.width);
max.height = mmode.LPtoDP(max.height);
max.width = mmode.LPtoDP(max.width);
if (min.width > rect.width) rect.width = min.width;
else if (max.width < rect.width) rect.width = max.width;
if (min.height > rect.height) rect.height = min.height;
else if (max.height < rect.height) rect.height = max.height;
feedback.translateToRelative(rect);
feedback.setBounds(rect);
}
protected void showChangeBoundsFeedback(ChangeBoundsRequest request) {
IFigure feedback = getDragSourceFeedbackFigure();
PrecisionRectangle rect = new PrecisionRectangle(getInitialFeedbackBounds().getCopy());
getHostFigure().translateToAbsolute(rect);
// Only enable horizontal dragging on lifelines(except lifelines that are result of a create
// message).
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=364688
if (this.getHost() instanceof LifelineEditPart) {
LifelineEditPart lifelineEP = (LifelineEditPart) this.getHost();
if (!SequenceUtil.isCreateMessageEndLifeline(lifelineEP)) {
request.getMoveDelta().y = 0;
}
}
rect.translate(request.getMoveDelta());
rect.resize(request.getSizeDelta());
IFigure f = getHostFigure();
Dimension min = f.getMinimumSize().getCopy();
Dimension max = f.getMaximumSize().getCopy();
IMapMode mmode = MapModeUtil.getMapMode(f);
min.height = mmode.LPtoDP(min.height);
min.width = mmode.LPtoDP(min.width);
max.height = mmode.LPtoDP(max.height);
max.width = mmode.LPtoDP(max.width);
if (min.width > rect.width) rect.width = min.width;
else if (max.width < rect.width) rect.width = max.width;
if (min.height > rect.height) rect.height = min.height;
else if (max.height < rect.height) rect.height = max.height;
feedback.translateToRelative(rect);
feedback.setBounds(rect);
}
// @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);
}
}
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;
}
