Examples of org.apache.flex.forks.batik.gvt.GraphicsNode

org.apache.flex.forks.batik.gvt.GraphicsNode
The base class for all graphics nodes. A GraphicsNode encapsulates graphical attributes and can perform atomic operations of a complex rendering. @author Thierry Kormann @author Emmanuel Tissandier @version $Id: GraphicsNode.java,v 1.39 2005/03/27 08:58:34 cam Exp $

        double scx = Math.sqrt(at.getShearY()*at.getShearY()+
                               at.getScaleX()*at.getScaleX());
        double scy = Math.sqrt(at.getShearX()*at.getShearX()+
                               at.getScaleY()*at.getScaleY());


        GraphicsNode gn = null;
        int idx =-1;
        double w = bounds.getWidth()*scx;
        double minDist = calcDist(w, minSz[0], maxSz[0]);
        int    minIdx = 0;
        // System.err.println("Width: " + w);
        for (int i=0; i<minSz.length; i++) {
            double dist = calcDist(w, minSz[i], maxSz[i]);
            // System.err.println("Dist: " + dist);
            if (dist < minDist) {
                minDist = dist;
                minIdx = i;
            } 
                
            if (((minSz[i] == null) || (w >= minSz[i].width)) &&
                ((maxSz[i] == null) || (w <= maxSz[i].width))) {
                // We have a range match
                // System.err.println("Match: " + i + " " + 
                //                    minSz[i] + " -> " + maxSz[i]);
                if ((idx == -1) || (minIdx == i)) {
                    idx = i;
                }
            }
        }


        if (idx == -1)
            idx = minIdx;
        gn = getGraphicsNode(idx);
        if (gn == null) return;


        // This makes sure that the image 'pushes out' to it's pixel
        // bounderies.
        Rectangle2D gnBounds = gn.getBounds();
        if (gnBounds == null) return;


        double gnDevW = gnBounds.getWidth()*scx;
        double gnDevH = gnBounds.getHeight()*scy;
        double gnDevX = gnBounds.getX()*scx;
        double gnDevY = gnBounds.getY()*scy;
        double gnDevX0, gnDevX1, gnDevY0, gnDevY1;
        if (gnDevW < 0) {
            gnDevX0 = gnDevX+gnDevW;
            gnDevX1 = gnDevX;
        } else {
            gnDevX0 = gnDevX;
            gnDevX1 = gnDevX+gnDevW;
        }
        if (gnDevH < 0) {
            gnDevY0 = gnDevY+gnDevH;
            gnDevY1 = gnDevY;
        } else {
            gnDevY0 = gnDevY;
            gnDevY1 = gnDevY+gnDevH;
        }
        // This calculate the width/height in pixels given 'worst
        // case' assessment.
        gnDevW = (int)(Math.ceil(gnDevX1)-Math.floor(gnDevX0));
        gnDevH = (int)(Math.ceil(gnDevY1)-Math.floor(gnDevY0));
        scx = (gnDevW/gnBounds.getWidth())/scx;
        scy = (gnDevH/gnBounds.getHeight())/scy;


        // This scales things up slightly so our edges fall on device
        // pixel boundries.
        AffineTransform nat = g2d.getTransform();
        nat = new AffineTransform(nat.getScaleX()*scx, nat.getShearY()*scx,
                                 nat.getShearX()*scy, nat.getScaleY()*scy,
                                 nat.getTranslateX(), nat.getTranslateY());
        g2d.setTransform(nat);


        // double sx = bounds.getWidth()/sizes[idx].getWidth();
        // double sy = bounds.getHeight()/sizes[idx].getHeight();
        // System.err.println("Scale: [" + sx + ", " + sy + "]");


        gn.paint(g2d);
    }

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                return (GraphicsNode)o;
        }
        
        try {
            GVTBuilder builder = ctx.getGVTBuilder();
            GraphicsNode gn;
            gn = builder.build(ctx, srcElems[idx]);
            srcs[idx] = new SoftReference(gn);
            return gn;
        } catch (Exception ex) { ex.printStackTrace();  }

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        ctx.setGVTBuilder(this);


        // build the GVT tree
        RootGraphicsNode rootNode = new RootGraphicsNode();
        Element svgElement = document.getDocumentElement();
        GraphicsNode topNode = null;
        try {
            // get the appropriate bridge according to the specified element
            Bridge bridge = ctx.getBridge(svgElement);
            if (bridge == null || !(bridge instanceof GraphicsNodeBridge)) {
                return null;

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        GraphicsNodeBridge gnBridge = (GraphicsNodeBridge)bridge;
        // check the display property
        if (!gnBridge.getDisplay(e)) {
            return null;
        }
        GraphicsNode gn = gnBridge.createGraphicsNode(ctx, e);
        if (gn != null) {
            if (gnBridge.isComposite()) {
                buildComposite(ctx, e, (CompositeGraphicsNode)gn);
            } else {
                handleGenericBridges(ctx, e);

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            return;
        }
        GraphicsNodeBridge gnBridge = (GraphicsNodeBridge)bridge;
        try {
            // create the associated graphics node
            GraphicsNode gn = gnBridge.createGraphicsNode(ctx, e);
            if (gn != null) {
                // attach the graphics node to the GVT tree now !
                parentNode.getChildren().add(gn);
                // check if the element has children to build
                if (gnBridge.isComposite()) {
                    buildComposite(ctx, e, (CompositeGraphicsNode)gn);
                } else {
                    // if not then still handle the GenericBridges
                    handleGenericBridges(ctx, e);
                }
                gnBridge.buildGraphicsNode(ctx, e, gn);
            }
        } catch (BridgeException ex) {
            // some bridge may decide that the node in error can be
            // displayed (e.g. polyline, path...)
            // In this case, the exception contains the GraphicsNode
            GraphicsNode errNode = ex.getGraphicsNode();
            if (errNode != null) {
                parentNode.getChildren().add(errNode);
                gnBridge.buildGraphicsNode(ctx, e, errNode);
                ex.setGraphicsNode(null);
            }

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        GraphicsNodeMouseEvent mevt = null;
        if (evt instanceof GraphicsNodeMouseEvent) {
            mevt = (GraphicsNodeMouseEvent) evt;
        }


        GraphicsNode source = evt.getGraphicsNode();
        if (isDeselectGesture(evt)) {
            if (selectionNode != null)
                selectionNode.getRoot()
                    .removeTreeGraphicsNodeChangeListener(this);


            clearSelection();
        } else if (mevt != null) {


            Point2D p = new Point2D.Double(mevt.getX(), mevt.getY());
            AffineTransform t = source.getGlobalTransform();
            if (t == null) {
                t = new AffineTransform();
            }
            else {
                 try {
                     t = t.createInverse();
                 } catch (NoninvertibleTransformException ni) {
                 }
            }
            p = t.transform(p, null);


            if ((source instanceof Selectable) && 
                (isSelectStartGesture(evt))) {
                if (selectionNode != source) {
                    if (selectionNode != null)
                        selectionNode.getRoot()
                            .removeTreeGraphicsNodeChangeListener(this);
                    if (source != null)
                        source.getRoot()
                            .addTreeGraphicsNodeChangeListener(this);
                }


                selectionNode = source;
                ((Selectable) source).selectAt(p.getX(), p.getY());
                dispatchSelectionEvent(
                        new SelectionEvent(null,
                                SelectionEvent.SELECTION_STARTED,
                                null));


            } else if (isSelectEndGesture(evt)) {
                if (selectionNode == source) 
                    ((Selectable) source).selectTo(p.getX(), p.getY());
                Object oldSelection = getSelection();
                if (selectionNode != null) {
                    Shape newShape;
                    newShape = ((Selectable)selectionNode).getHighlightShape();
                    dispatchSelectionEvent
                        (new SelectionEvent(oldSelection,
                                            SelectionEvent.SELECTION_DONE,
                                            newShape));
                }
            } else if (isSelectContinueGesture(evt)) {


                if (selectionNode == source) {
                    boolean result = ((Selectable) source).selectTo(p.getX(), 
                                                                    p.getY());
                    if (result) {
                        Shape newShape =
                            ((Selectable) selectionNode).getHighlightShape();


                        dispatchSelectionEvent(
                            new SelectionEvent(null,
                                SelectionEvent.SELECTION_CHANGED,
                                newShape));
                    }
                }
            } else if ((source instanceof Selectable) && 
                       (isSelectAllGesture(evt))) {
                if (selectionNode != source) {
                    if (selectionNode != null)
                        selectionNode.getRoot()
                            .removeTreeGraphicsNodeChangeListener(this);
                    if (source != null)
                        source.getRoot()
                            .addTreeGraphicsNodeChangeListener(this);
                }
                selectionNode = source;
                ((Selectable) source).selectAll(p.getX(), p.getY());
                Object oldSelection = getSelection();

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            listeners.remove(l);
        }
    }


    private void report(GraphicsNodeEvent evt, String message) {
        GraphicsNode source = evt.getGraphicsNode();
        String label = "(non-text node)";
        if (source instanceof TextNode) {
            char[] cbuff;
            java.text.CharacterIterator iter =
                ((TextNode) source).getAttributedCharacterIterator();

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    class RenderThread extends Thread {
        public void run() {
            renderer.setDoubleBuffered(true);
            for (int i=0; i<files.length; i++) {
                GraphicsNode   gvtRoot = null;
                GVTBuilder builder = new GVTBuilder();


                try {
                    System.out.println("Reading: " + files[i]);
                    Document svgDoc = loader.loadDocument

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        if (imageNode == null) {
            return null;
        }


        hitCheckChildren = false;
        GraphicsNode node = buildImageGraphicsNode(ctx,e);


        if (node == null) {
            String uriStr = XLinkSupport.getXLinkHref(e);
            throw new BridgeException(e, ERR_URI_IMAGE_INVALID,
                                      new Object[] {uriStr});

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    }


    protected void updateImageBounds() {
        //retrieve the new bounds of the image tag
        Rectangle2D  bounds = getImageBounds(ctx, e);
        GraphicsNode imageNode = ((ImageNode)node).getImage();
        float [] vb = null;
        if (imageNode instanceof RasterImageNode) {
            //Raster image
            Rectangle2D imgBounds = 
                ((RasterImageNode)imageNode).getImageBounds();

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