Examples of org.xhtmlrenderer.extend.ReplacedElement

org.xhtmlrenderer.extend.ReplacedElement
A replaced element is an XML element in the document being rendered whose visual output is delegated. For example, an element in HTML may be rendered using some form of {@link java.awt.Image}. The idea is that there are some XML elements which Flying Saucer knows how to position and size (that's in the CSS) but has no idea how to render on screen. Replaced elements serve that purpose.




    @Override
    public ReplacedElement createReplacedElement(LayoutContext c, BlockBox box, UserAgentCallback uac, int cssWidth, int cssHeight) {
  for(ReplacedElementFactory replacedElementFactory : replacedElementFactories) {
      ReplacedElement element = replacedElementFactory.createReplacedElement(c, box, uac, cssWidth, cssHeight);
      if(element != null) {
    return element;
      }
  }
  return null;

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            drawLine(x, y + h - offset, x + w - adj, y + h - offset);
        }
    }


    public void paintReplacedElement(RenderingContext c, BlockBox box) {
        ReplacedElement replaced = box.getReplacedElement();
        if (replaced instanceof SwingReplacedElement) {
            Rectangle contentBounds = box.getContentAreaEdge(box.getAbsX(), box.getAbsY(), c);
            translate(contentBounds.x, contentBounds.y);
            JComponent component = ((SwingReplacedElement)box.getReplacedElement()).getJComponent();
            component.print(_graphics);
            translate(-contentBounds.x, -contentBounds.y);
        } else if (replaced instanceof ImageReplacedElement) {
            Image image = ((ImageReplacedElement)replaced).getImage();
            
            Point location = replaced.getLocation();
            _graphics.drawImage(
                    image, (int)location.getX(), (int)location.getY(), null);
        }
    }

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                if (cssHeight != -1) {
                    setHeight(cssHeight);
                }


                //check if replaced
                ReplacedElement re = getReplacedElement();
                if (re == null) {
                    re = c.getReplacedElementFactory().createReplacedElement(
                            c, this, c.getUac(), cssWidth, cssHeight);
                }
                if (re != null) {
                    setContentWidth(re.getIntrinsicWidth());
                    setHeight(re.getIntrinsicHeight());
                    setReplacedElement(re);
                } else if (cssWidth == -1 && pinnedContentWidth == -1 &&
                        (style.isInlineBlock() || style.isFloated() ||
                                style.isAbsolute() || style.isFixed())) {
                    setNeedShrinkToFitCalculatation(true);

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            if (width == -1) {
                if (isReplaced()) {
                    width = getReplacedElement().getIntrinsicWidth();
                } else {
                    int height = getCSSHeight(c);
                    ReplacedElement re = c.getReplacedElementFactory().createReplacedElement(
                            c, this, c.getUac(), width, height);
                    if (re != null) {
                        setReplacedElement(re);
                        width = getReplacedElement().getIntrinsicWidth();
                    }

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     * @param elem      The element with the image reference
     * @param cssWidth  Target width of the image
     * @param cssHeight Target height of the image @return A ReplacedElement for the image; will not be null.
     */
    protected ReplacedElement replaceImage(UserAgentCallback uac, LayoutContext context, Element elem, int cssWidth, int cssHeight) {
        ReplacedElement re = null;


        // lookup in cache, or instantiate
        re = lookupImageReplacedElement(elem);
        if (re == null) {
            Image im = null;

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     * @param cssHeight Target height for the element
     * @return A ReplacedElement to substitute for one that can't be generated.
     */
    protected ReplacedElement newIrreplaceableImageElement(int cssWidth, int cssHeight) {
        BufferedImage missingImage = null;
        ReplacedElement mre;
        try {
            // TODO: we can come up with something better; not sure if we should use Alt text, how text should size, etc.
            missingImage = ImageUtil.createCompatibleBufferedImage(cssWidth, cssHeight, BufferedImage.TYPE_INT_RGB);
            Graphics2D g = missingImage.createGraphics();
            g.setColor(Color.BLACK);

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     */
    protected ReplacedElement lookupImageReplacedElement(Element e) {
        if (imageComponents == null) {
            return null;
        }
        ReplacedElement replacedElement = (ReplacedElement) imageComponents.get(e);
        return replacedElement;
    }

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                if (cssHeight != -1) {
                    setHeight(cssHeight);
                }


                //check if replaced
                ReplacedElement re = getReplacedElement();
                if (re == null) {
                    re = c.getReplacedElementFactory().createReplacedElement(
                            c, this, c.getUac(), cssWidth, cssHeight);
                    if (re != null){
                        re = fitReplacedElement(c, re);
                    }
                }
                if (re != null) {
                    setContentWidth(re.getIntrinsicWidth());
                    setHeight(re.getIntrinsicHeight());
                    setReplacedElement(re);
                } else if (cssWidth == -1 && pinnedContentWidth == -1 &&
                        style.isCanBeShrunkToFit()) {
                    setNeedShrinkToFitCalculatation(true);
                }

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            if (width == -1) {
                if (isReplaced()) {
                    width = getReplacedElement().getIntrinsicWidth();
                } else {
                    int height = getCSSHeight(c);
                    ReplacedElement re = c.getReplacedElementFactory().createReplacedElement(
                            c, this, c.getUac(), width, height);
                    if (re != null) {
                        re = fitReplacedElement(c, re);
                        setReplacedElement(re);
                        width = getReplacedElement().getIntrinsicWidth();

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        }
        return null;
    }


    private ReplacedElement replaceUsing(LayoutContext context, BlockBox box, UserAgentCallback uac, int cssWidth, int cssHeight, ElementReplacer replacer) {
        final ReplacedElement re = replacer.replace(context, box, uac, cssWidth, cssHeight);
        elementReplacements.add(new ERItem(box.getElement(), re, replacer));
        return re;
    }

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