Examples of diva.canvas.interactor.GrabHandle

diva.canvas.interactor.GrabHandle
A grab handle for manipulating figures and so on. Grab-handles are attached to Sites. @author John Reekie @author Michael Shilman @version $Id: GrabHandle.java,v 1.10 2005/07/08 19:54:54 cxh Exp $

        // make events go to the grab-handle under the mouse
        Figure ef = _controller.getFigure(edge);
        _controller.getSelectionModel().addSelection(ef);


        ConnectorManipulator cm = (ConnectorManipulator) ef.getParent();
        GrabHandle gh = cm.getHeadHandle();
        layer.grabPointer(e, gh);
    }

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                // Add it to the selection so it gets a manipulator, and
                // make events go to the grab-handle under the mouse
                getSelectionModel().addSelection(c);


                ConnectorManipulator cm = (ConnectorManipulator) c.getParent();
                GrabHandle gh = cm.getHeadHandle();
                layer.grabPointer(event, gh);
            } catch (Exception ex) {
                MessageHandler.error("Drag connection failed:", ex);
            }
        }

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        public void translate(LayerEvent e, double x, double y) {
            // Snap to grid.
            double[] snapped = _snapConstraint.constrain(x, y);


            // Translate the grab-handle, resizing the geometry
            GrabHandle g = (GrabHandle) e.getFigureSource();
            g.translate(snapped[0], snapped[1]);


            // Transform the child.
            BoundsManipulator parent = (BoundsManipulator) g.getParent();
            BoundsGeometry geometry = parent.getGeometry();


            parent.getChild().transform(
                    CanvasUtilities.computeTransform(parent.getChild()
                            .getBounds(), geometry.getBounds()));

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                // make events go to the grab-handle under the mouse
                Figure ef = getFigure(link);
                getSelectionModel().addSelection(ef);


                ConnectorManipulator cm = (ConnectorManipulator) ef.getParent();
                GrabHandle gh = cm.getHeadHandle();
                layer.grabPointer(event, gh);
            } catch (Exception ex) {
                MessageHandler.error("Drag connection failed:", ex);
            }
        }

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            }
            Iterator i = geometry.sites();
            while (i.hasNext()) {
                // Create a grab handle and set up the interactor
                Site site = (Site) i.next();
                GrabHandle g = getGrabHandleFactory().createGrabHandle(site);
                g.setParent(this);
                g.setInteractor(getHandleInteractor());
                addGrabHandle(g);
            }


            // Move them where they should be - ?
            relocateGrabHandles();

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        @Override
        public void translate(LayerEvent e, double dx, double dy) {


            AffineTransform af = new AffineTransform();


            GrabHandle grabHandle = (GrabHandle) e.getFigureSource();
            RectangleManipulator manipulator = (RectangleManipulator) grabHandle.getParent();
            RectangleGeometry geometry = manipulator.getGeometry();
            RotatableCanvasFigure roi = (RotatableCanvasFigure) manipulator.getChild();


            Point2D p = geometry.getRotateCenter();
            double cx = p.getX();
            double cy = p.getY();


            int id = grabHandle.getSite().getID();


            if (id == 0) {
                double x = e.getLayerX();
                double y = e.getLayerY();


                double x1 = x - dx - cx;
                double x2 = x - cx;
                double y1 = y - dy - cy;
                double y2 = y - cy;


                /////////////////////
                // Rotating Handle //
                /////////////////////
                double angle = Math.atan2(y2, x2) - Math.atan2(y1, x1);


                // Transform the child.
                af.setToRotation(angle, cx, cy);
                roi.transform(af);


            } else if (roi.isResizable()) {
                ///////////////////
                // Resize Handle //
                ///////////////////
                RectangularShape r1 = (RectangularShape) geometry.getRect().clone();


                // translating the grab handle
                grabHandle.translate(dx, dy);


                // transform the child roi
                RectangularShape r2 = geometry.getRect();
                double angle = geometry.getRotateAngle();
                af.concatenate(AffineTransform.getRotateInstance(angle, cx, cy));

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