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 $

     * Returns the transformation matrix from current user units
     * (i.e., after application of the transform attribute, if any) to
     * the viewport coordinate system for the nearestViewportElement.
     */
    public AffineTransform getCTM() {
        GraphicsNode gn = node;
        AffineTransform ctm = new AffineTransform();
        Element elt = e;
        while (elt != null) {
            if (elt instanceof SVGFitToViewBox) {
                AffineTransform at;
                if (gn instanceof CanvasGraphicsNode) {
                    at = ((CanvasGraphicsNode)gn).getViewingTransform();
                } else {
                    at = gn.getTransform();
                }
                if (at != null) {
                    ctm.preConcatenate(at);
                }
                break;
            }


            AffineTransform at = gn.getTransform();
            if (at != null)
                ctm.preConcatenate(at);


            elt = SVGCSSEngine.getParentCSSStylableElement(elt);
            gn = gn.getParent();
        }
        return ctm;
    }

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            } else {
                throw new BridgeException 
                    (cursorElement, ERR_URI_IMAGE_INVALID,
                     new Object[] {uriStr});
            }
            GraphicsNode node = ctx.getGVTBuilder().build(ctx, rootElement);


            //
            // The cursorSize define the viewport into which the 
            // cursor is displayed. That viewport is platform 
            // dependant and is not defined by the SVG content.
            //
            float width  = DEFAULT_PREFERRED_WIDTH;
            float height = DEFAULT_PREFERRED_HEIGHT;
            UnitProcessor.Context uctx 
                = UnitProcessor.createContext(ctx, rootElement);


            String s = rootElement.getAttribute(SVG_WIDTH_ATTRIBUTE);
            if (s.length() != 0) {
                width = UnitProcessor.svgHorizontalLengthToUserSpace
                (s, SVG_WIDTH_ATTRIBUTE, uctx);
            }
            
            s = rootElement.getAttribute(SVG_HEIGHT_ATTRIBUTE);
            if (s.length() != 0) {
                height = UnitProcessor.svgVerticalLengthToUserSpace
                    (s, SVG_HEIGHT_ATTRIBUTE, uctx);
            }


            cursorSize 
                = Toolkit.getDefaultToolkit().getBestCursorSize
                (Math.round(width), Math.round(height));
            
            // Handle the viewBox transform
            AffineTransform at 
                = ViewBox.getPreserveAspectRatioTransform(rootElement,
                                                          cursorSize.width,
                                                          cursorSize.height);
            Filter filter = node.getGraphicsNodeRable(true);
            f = new AffineRable8Bit(filter, at);
        } catch (BridgeException ex) {
            throw ex;
        } catch (SecurityException ex) {
            throw new BridgeException(cursorElement, ERR_URI_UNSECURE,

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        // flag that indicates if the document is dynamic
        boolean isDynamic =
            hints.containsKey(KEY_EXECUTE_ONLOAD) &&
             ((Boolean)hints.get(KEY_EXECUTE_ONLOAD)).booleanValue();


        GraphicsNode gvtRoot;
        try {
            if (isDynamic)
                ctx.setDynamicState(BridgeContext.DYNAMIC);


            gvtRoot = builder.build(ctx, svgDoc);

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            // Only draw directly into sRGB destinations...
            return false;
        }


        // System.out.println("drawImage GNR: " + g2dCS);
        GraphicsNode gn = getGraphicsNode();
        if (getUsePrimitivePaint()){
            gn.primitivePaint(g2d);
        }
        else{
            gn.paint(g2d);
        }


        // Paint did the work...
        return true;
    }

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        List children = cgn.getChildren();
        Iterator i = children.iterator();
        Rectangle2D r2d = null;
        while (i.hasNext()) {
            GraphicsNode gn = (GraphicsNode)i.next();
            if (gn == child)
                break;


            // System.out.println("GN: " + gn);
            Rectangle2D cr2d = gn.getBounds();
            AffineTransform at = gn.getTransform();
            if (at != null)
                cr2d = at.createTransformedShape(cr2d).getBounds2D();


            if (r2d == null) r2d = (Rectangle2D)cr2d.clone();
            else             r2d.add(cr2d);

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        if (child != null) {
            CompositeGraphicsNode cgn = (CompositeGraphicsNode)gn;
            List children = cgn.getChildren();
            Iterator i = children.iterator();
            while (i.hasNext()) {
                GraphicsNode childGN = (GraphicsNode)i.next();
                // System.out.println("Parent: "      + cgn +
                //                    "\n  Child: "   + child +
                //                    "\n  ChildGN: " + childGN);
                if (childGN == child)
                    break;


                Rectangle2D cbounds = childGN.getBounds();
                // System.out.println("Child : " + childGN);
                // System.out.println("Bounds: " + cbounds);
                // System.out.println("      : " + aoi);


                AffineTransform at = childGN.getTransform();
                if (at != null)
                    cbounds = at.createTransformedShape(cbounds).getBounds2D();




                if (aoi.intersects(cbounds)) {
                    srcs.add(childGN.getEnableBackgroundGraphicsNodeRable
                             (true));
                }
            }
        }

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


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


                ((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) {
                        selectionNodeRoot
                            .removeTreeGraphicsNodeChangeListener(this);
                    }
                    selectionNode = source;
                    if (source != null) {
                        selectionNodeRoot = source.getRoot();
                        selectionNodeRoot
                            .addTreeGraphicsNodeChangeListener(this);
                    }
                }
                ((Selectable) source).selectAll(p.getX(), p.getY());

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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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