Package org.apache.flex.forks.batik.gvt

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


    /**
     * Creates a <tt>CompositeGraphicsNode</tt>.
     */
    protected GraphicsNode instantiateGraphicsNode() {
        return new CanvasGraphicsNode();
    }
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        // 'requiredFeatures', 'requiredExtensions' and 'systemLanguage'
        if (!SVGUtilities.matchUserAgent(e, ctx.getUserAgent())) {
            return null;
        }

        CanvasGraphicsNode cgn;
        cgn = (CanvasGraphicsNode)instantiateGraphicsNode();

        associateSVGContext(ctx, e, cgn);

        try {
            // In some cases we converted document fragments which didn't
            // have a parent SVG element, this check makes sure only the
            // real root of the SVG Document tries to do negotiation with
            // the UA.
            SVGDocument doc = (SVGDocument)e.getOwnerDocument();
            SVGOMSVGElement se = (SVGOMSVGElement) e;
            boolean isOutermost = (doc.getRootElement() == e);
            float x = 0;
            float y = 0;
            // x and y have no meaning on the outermost 'svg' element
            if (!isOutermost) {
                // 'x' attribute - default is 0
                AbstractSVGAnimatedLength _x =
                    (AbstractSVGAnimatedLength) se.getX();
                x = _x.getCheckedValue();

                // 'y' attribute - default is 0
                AbstractSVGAnimatedLength _y =
                    (AbstractSVGAnimatedLength) se.getY();
                y = _y.getCheckedValue();
            }

            // 'width' attribute - default is 100%
            AbstractSVGAnimatedLength _width =
                (AbstractSVGAnimatedLength) se.getWidth();
            float w = _width.getCheckedValue();

            // 'height' attribute - default is 100%
            AbstractSVGAnimatedLength _height =
                (AbstractSVGAnimatedLength) se.getHeight();
            float h = _height.getCheckedValue();

            // 'visibility'
            cgn.setVisible(CSSUtilities.convertVisibility(e));

            // 'viewBox' and "preserveAspectRatio' attributes
            SVGOMAnimatedRect vb = (SVGOMAnimatedRect) se.getViewBox();
            SVGAnimatedPreserveAspectRatio par = se.getPreserveAspectRatio();
            AffineTransform viewingTransform =
                ViewBox.getPreserveAspectRatioTransform(e, vb, par, w, h, ctx);

            float actualWidth = w;
            float actualHeight = h;
            try {
                AffineTransform vtInv = viewingTransform.createInverse();
                actualWidth = (float) (w*vtInv.getScaleX());
                actualHeight = (float) (h*vtInv.getScaleY());
            } catch (NoninvertibleTransformException ex) {}

            AffineTransform positionTransform =
                AffineTransform.getTranslateInstance(x, y);
            // The outermost preserveAspectRatio matrix is set by the user
            // agent, so we don't need to set the transform for outermost svg
            if (!isOutermost) {
                // X & Y are ignored on outermost SVG.
                cgn.setPositionTransform(positionTransform);
            } else if (doc == ctx.getDocument()) {
                // <!> FIXME: hack to compute the original document's size
                ctx.setDocumentSize(new Dimension((int) (w + 0.5f),
                                                  (int) (h + 0.5f)));
            }
            // Set the viewing transform, this is often updated when the
            // component prepares for rendering.
            cgn.setViewingTransform(viewingTransform);

            // 'overflow' and 'clip'
            Shape clip = null;
            if (CSSUtilities.convertOverflow(e)) { // overflow:hidden
                float [] offsets = CSSUtilities.convertClip(e);
                if (offsets == null) { // clip:auto
                    clip = new Rectangle2D.Float(x, y, w, h);
                } else { // clip:rect(<x> <y> <w> <h>)
                    // offsets[0] = top
                    // offsets[1] = right
                    // offsets[2] = bottom
                    // offsets[3] = left
                    clip = new Rectangle2D.Float(x+offsets[3],
                                                 y+offsets[0],
                                                 w-offsets[1]-offsets[3],
                                                 h-offsets[2]-offsets[0]);
                }
            }

            if (clip != null) {
                try {
                    AffineTransform at = new AffineTransform(positionTransform);
                    at.concatenate(viewingTransform);
                    at = at.createInverse(); // clip in user space
                    clip = at.createTransformedShape(clip);
                    Filter filter = cgn.getGraphicsNodeRable(true);
                    cgn.setClip(new ClipRable8Bit(filter, clip));
                } catch (NoninvertibleTransformException ex) {}
            }
            RenderingHints hints = null;
            hints = CSSUtilities.convertColorRendering(e, hints);
            if (hints != null)
                cgn.setRenderingHints(hints);

            // 'enable-background'
            Rectangle2D r = CSSUtilities.convertEnableBackground(e);
            if (r != null) {
                cgn.setBackgroundEnable(r);
            }

            if (vb.isSpecified()) {
                SVGRect vbr = vb.getAnimVal();
                actualWidth = vbr.getWidth();
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                            (AbstractSVGAnimatedLength) se.getY();
                        float y = _y.getCheckedValue();

                        AffineTransform positionTransform =
                            AffineTransform.getTranslateInstance(x, y);
                        CanvasGraphicsNode cgn;
                        cgn = (CanvasGraphicsNode)node;

                        cgn.setPositionTransform(positionTransform);
                        return;
                    }
                } else if (ln.equals(SVG_VIEW_BOX_ATTRIBUTE)
                        || ln.equals(SVG_PRESERVE_ASPECT_RATIO_ATTRIBUTE)) {
                    SVGDocument doc = (SVGDocument)e.getOwnerDocument();
                    SVGOMSVGElement se = (SVGOMSVGElement) e;
                    boolean isOutermost = doc.getRootElement() == e;

                    // X & Y are ignored on outermost SVG.
                    float x = 0;
                    float y = 0;
                    if (!isOutermost) {
                        // 'x' attribute - default is 0
                        AbstractSVGAnimatedLength _x =
                            (AbstractSVGAnimatedLength) se.getX();
                        x = _x.getCheckedValue();

                        // 'y' attribute - default is 0
                        AbstractSVGAnimatedLength _y =
                            (AbstractSVGAnimatedLength) se.getY();
                        y = _y.getCheckedValue();
                    }
                   
                    // 'width' attribute - default is 100%
                    AbstractSVGAnimatedLength _width =
                        (AbstractSVGAnimatedLength) se.getWidth();
                    float w = _width.getCheckedValue();
                   
                    // 'height' attribute - default is 100%
                    AbstractSVGAnimatedLength _height =
                        (AbstractSVGAnimatedLength) se.getHeight();
                    float h = _height.getCheckedValue();
                   
                    CanvasGraphicsNode cgn;
                    cgn = (CanvasGraphicsNode)node;
                   
                    // 'viewBox' and "preserveAspectRatio' attributes
                    SVGOMAnimatedRect vb = (SVGOMAnimatedRect) se.getViewBox();
                    SVGAnimatedPreserveAspectRatio par = se.getPreserveAspectRatio();
                    AffineTransform newVT = ViewBox.getPreserveAspectRatioTransform
                        (e, vb, par, w, h, ctx);

                    AffineTransform oldVT = cgn.getViewingTransform();
                    if ((newVT.getScaleX() != oldVT.getScaleX()) ||
                        (newVT.getScaleY() != oldVT.getScaleY()) ||
                        (newVT.getShearX() != oldVT.getShearX()) ||
                        (newVT.getShearY() != oldVT.getShearY()))
                        rebuild = true;
                    else {
                        // Only differs in translate.
                        cgn.setViewingTransform(newVT);
                       
                        // 'overflow' and 'clip'
                        Shape clip = null;
                        if (CSSUtilities.convertOverflow(e)) { // overflow:hidden
                            float [] offsets = CSSUtilities.convertClip(e);
                            if (offsets == null) { // clip:auto
                                clip = new Rectangle2D.Float(x, y, w, h);
                            } else { // clip:rect(<x> <y> <w> <h>)
                                // offsets[0] = top
                                // offsets[1] = right
                                // offsets[2] = bottom
                                // offsets[3] = left
                                clip = new Rectangle2D.Float(x+offsets[3],
                                                             y+offsets[0],
                                                             w-offsets[1]-offsets[3],
                                                             h-offsets[2]-offsets[0]);
                            }
                        }
                       
                        if (clip != null) {
                            try {
                                AffineTransform at;
                                at = cgn.getPositionTransform();
                                if (at == null) at = new AffineTransform();
                                else            at = new AffineTransform(at);
                                at.concatenate(newVT);
                                at = at.createInverse(); // clip in user space
                                clip = at.createTransformedShape(clip);
                                Filter filter = cgn.getGraphicsNodeRable(true);
                                cgn.setClip(new ClipRable8Bit(filter, clip));
                            } catch (NoninvertibleTransformException ex) {}
                        }
                    }
                }
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