Examples with ZoomManager org.eclipse.gef.editparts.ZoomManager used on opensource projects

Example 6 with ZoomManager

use of org.eclipse.gef.editparts.ZoomManager in project tdi-studio-se by Talend.

the class ComponentChooseDialog method dragOver.

@Override
public void dragOver(DropTargetEvent event) {
    // multi-drag for job,context, sqlPattern.
    IStructuredSelection selection = getSelection();
    if (selection.size() > 1) {
        boolean allowed = true;
        Item temItem = null;
        Iterator iter = selection.iterator();
        while (iter.hasNext()) {
            Object next = iter.next();
            if (next instanceof RepositoryNode) {
                RepositoryNode sourceNode = (RepositoryNode) next;
                IRepositoryViewObject object = sourceNode.getObject();
                if (object != null) {
                    Item selectItem = object.getProperty().getItem();
                    if (temItem == null) {
                        temItem = selectItem;
                        continue;
                    }
                    if (selectItem instanceof ProcessItem && !(temItem instanceof ProcessItem)) {
                        allowed = false;
                    } else if (selectItem instanceof ContextItem && !(temItem instanceof ContextItem)) {
                        allowed = false;
                    } else if (selectItem instanceof SQLPatternItem && !(temItem instanceof SQLPatternItem)) {
                        allowed = false;
                    }
                }
            }
        }
        if (!allowed) {
            event.detail = DND.DROP_NONE;
        }
    } else {
        CreateRequest req = ((CreateRequest) getTargetRequest());
        Object o = null;
        try {
            o = req.getNewObject();
        } catch (Exception e) {
            return;
        }
        if (!(o instanceof Node)) {
            return;
        }
        RootEditPart rep = editor.getViewer().getRootEditPart().getRoot();
        Point viewOriginalPosition = new Point();
        if (rep instanceof ScalableFreeformRootEditPart) {
            ScalableFreeformRootEditPart root = (ScalableFreeformRootEditPart) rep;
            Viewport viewport = (Viewport) root.getFigure();
            viewOriginalPosition = viewport.getViewLocation();
        }
        org.eclipse.swt.graphics.Point swtLocation = new org.eclipse.swt.graphics.Point(event.x + viewOriginalPosition.x, event.y + viewOriginalPosition.y);
        Canvas canvas = (Canvas) editor.getViewer().getControl();
        swtLocation = canvas.toControl(swtLocation);
        // System.out.println("topLeft:" + topLeftpoint + " / event:" + swtLocation);
        org.eclipse.draw2d.geometry.Point draw2dPosition = new org.eclipse.draw2d.geometry.Point(swtLocation.x, swtLocation.y);
        double zoom = 1.0;
        if (editor.getViewer().getRootEditPart() instanceof TalendScalableFreeformRootEditPart) {
            ZoomManager zoomManager = ((TalendScalableFreeformRootEditPart) editor.getViewer().getRootEditPart()).getZoomManager();
            zoom = zoomManager.getZoom();
        }
        List<ConnectionPart> connectionParts = CreateComponentOnLinkHelper.getConnectionParts(editor.getProcessPart(), draw2dPosition, (Node) o);
        double minDistance = 1000000000;
        for (ConnectionPart part : connectionParts) {
            if (part.getFigure() instanceof PolylineConnection) {
                PolylineConnection connection = (PolylineConnection) part.getFigure();
                double distance = CreateComponentOnLinkHelper.getDistanceOrthogonal(draw2dPosition.x, draw2dPosition.y, connection, zoom);
                if (distance < minDistance) {
                    selectedConnectionPart = part;
                    minDistance = Math.min(distance, minDistance);
                }
            }
        }
        if (selectedConnectionPart != null && minDistance < 15) {
            for (Object child : editor.getProcessPart().getChildren()) {
                if (child instanceof SubjobContainerPart) {
                    CreateComponentOnLinkHelper.unselectAllConnections((SubjobContainerPart) child);
                }
            }
            CreateComponentOnLinkHelper.selectConnection(selectedConnectionPart);
        } else {
            if (selectedConnectionPart != null) {
                CreateComponentOnLinkHelper.unselectConnection(selectedConnectionPart);
            }
            selectedConnectionPart = null;
        }
    }
}