* A renderer is primarily designed to convert a given area tree into the output * document format. It should be able to produce pages and fill the pages with * the text and graphical content. Usually the output is sent to an output * stream. Some output formats may support extra information that is not * available from the area tree or depends on the destination of the document. * Each renderer is given an area tree to render to its output format. The area * tree is simply a representation of the pages and the placement of text and * graphical objects on those pages. *
** The renderer will be given each page as it is ready and an output stream to * write the data out. All pages are supplied in the order they appear in the * document. In order to save memory it is possble to render the pages out of * order. Any page that is not ready to be rendered is setup by the renderer * first so that it can reserve a space or reference for when the page is ready * to be rendered.The renderer is responsible for managing the output format and * associated data and flow. *
** Each renderer is totally responsible for its output format. Because font * metrics (and therefore layout) are obtained in two different ways depending * on the renderer, the renderer actually sets up the fonts being used. The font * metrics are used during the layout process to determine the size of * characters. *
** The render context is used by handlers. It contains information about the * current state of the renderer, such as the page, the position, and any other * miscellanous objects that are required to draw into the page. *
** A renderer is created by implementing the Renderer interface. However, the * AbstractRenderer does most of what is needed, including iterating through the * tree parts, so it is this that is extended. This means that this object only * need to implement the basic functionality such as text, images, and lines. * AbstractRenderer's methods can easily be overridden to handle things in a * different way or do some extra processing. *
** The relevent AreaTree structures that will need to be rendered are Page, * Viewport, Region, Span, Block, Line, Inline. A renderer implementation * renders each individual page, clips and aligns child areas to a viewport, * handle all types of inline area, text, image etc and draws various lines and * rectangles. *
* * Note: There are specific extensions that have been added to the * FO. They are specific to their location within the FO and have to be * processed accordingly (ie. at the start or end of the page). * */ public class AFPRenderer extends AbstractPathOrientedRenderer { /** * AFP factor for a 240 resolution = 72000/240 = 300 */ private static final int DPI_CONVERSION_FACTOR_240 = 300; /** * The afp data stream object responsible for generating afp data */ private AFPDataStream _afpDataStream = null; /** * The map of afp root extensions */ private HashMap _rootExtensionMap = null; /** * The map of page segments */ private HashMap _pageSegmentsMap = null; /** * The fonts on the current page */ private HashMap _currentPageFonts = null; /** * The current color object */ private Color _currentColor = null; /** * The page font number counter, used to determine the next font reference */ private int _pageFontCounter = 0; /** * The current font family */ private String _currentFontFamily = ""; /** * The current font size */ private int _currentFontSize = 0; /** * The Options to be set on the AFPRenderer */ private Map _afpOptions = null; /** * The page width */ private int _pageWidth = 0; /** * The page height */ private int _pageHeight = 0; /** * The current page sequence id */ private String _pageSequenceId = null; /** * The portrait rotation */ private int _portraitRotation = 0; /** * The landscape rotation */ private int _landscapeRotation = 270; /** * The line cache, avoids drawing duplicate lines in tables. */ private HashSet _lineCache = null; /** * The current x position for line drawing */ private float _x; /** * The current y position for line drawing */ private float _y; /** * The map of saved incomplete pages */ private Map _pages = null; /** * Flag to the set the output object type for images */ private boolean colorImages = false; /** * Default value for image depth */ private int bitsPerPixel = 8; /** * Constructor for AFPRenderer. */ public AFPRenderer() { super(); } /** * Set up the font info * * @param inFontInfo font info to set up */ public void setupFontInfo(FontInfo inFontInfo) { this.fontInfo = inFontInfo; int num = 1; if (this.fontList != null && this.fontList.size() > 0) { for (Iterator it = this.fontList.iterator(); it.hasNext(); ) { AFPFontInfo afi = (AFPFontInfo)it.next(); AFPFont bf = (AFPFont)afi.getAFPFont(); for (Iterator it2 = afi.getFontTriplets().iterator(); it2.hasNext(); ) { FontTriplet ft = (FontTriplet)it2.next(); this.fontInfo.addFontProperties("F" + num, ft.getName() , ft.getStyle(), ft.getWeight()); this.fontInfo.addMetrics("F" + num, bf); num++; } } } else { log.warn("No AFP fonts configured - using default setup"); } if (this.fontInfo.fontLookup("sans-serif", "normal", 400) == null) { CharacterSet cs = new FopCharacterSet("T1V10500", "Cp500", "CZH200 ", 1, new Helvetica()); AFPFont bf = new OutlineFont("Helvetica", cs); this.fontInfo.addFontProperties("F" + num, "sans-serif", "normal", 400); this.fontInfo.addMetrics("F" + num, bf); num++; } if (this.fontInfo.fontLookup("serif", "normal", 400) == null) { CharacterSet cs = new FopCharacterSet("T1V10500", "Cp500", "CZN200 ", 1, new TimesRoman()); AFPFont bf = new OutlineFont("Helvetica", cs); this.fontInfo.addFontProperties("F" + num, "serif", "normal", 400); this.fontInfo.addMetrics("F" + num, bf); num++; } if (this.fontInfo.fontLookup("monospace", "normal", 400) == null) { CharacterSet cs = new FopCharacterSet("T1V10500", "Cp500", "CZ4200 ", 1, new Courier()); AFPFont bf = new OutlineFont("Helvetica", cs); this.fontInfo.addFontProperties("F" + num, "monospace", "normal", 400); this.fontInfo.addMetrics("F" + num, bf); num++; } if (this.fontInfo.fontLookup("any", "normal", 400) == null) { FontTriplet ft = this.fontInfo.fontLookup("sans-serif", "normal", 400); this.fontInfo.addFontProperties(this.fontInfo.getInternalFontKey(ft), "any", "normal", 400); } } /** * @see org.apache.fop.render.Renderer#setUserAgent(FOUserAgent) */ public void setUserAgent(FOUserAgent agent) { super.setUserAgent(agent); } /** * @see org.apache.fop.render.Renderer#startRenderer(java.io.OutputStream) */ public void startRenderer(OutputStream outputStream) throws IOException { _currentPageFonts = new HashMap(); _currentColor = new Color(255, 255, 255); _afpDataStream = new AFPDataStream(); _afpDataStream.setPortraitRotation(_portraitRotation); _afpDataStream.setLandscapeRotation(_landscapeRotation); _afpDataStream.startDocument(outputStream); } /** * @see org.apache.fop.render.Renderer#stopRenderer() */ public void stopRenderer() throws IOException { _afpDataStream.endDocument(); } /** * @see org.apache.fop.render.Renderer#supportsOutOfOrder() */ public boolean supportsOutOfOrder() { //return false; return true; } /** * Prepare a page for rendering. This is called if the renderer supports * out of order rendering. The renderer should prepare the page so that a * page further on in the set of pages can be rendered. The body of the * page should not be rendered. The page will be rendered at a later time * by the call to render page. * * @see org.apache.fop.render.Renderer#preparePage(PageViewport) */ public void preparePage(PageViewport page) { // initializeRootExtensions(page); _currentFontFamily = ""; _currentFontSize = 0; _pageFontCounter = 0; _currentPageFonts.clear(); _lineCache = new HashSet(); Rectangle2D bounds = page.getViewArea(); _pageWidth = mpts2units(bounds.getWidth()); _pageHeight = mpts2units(bounds.getHeight()); // renderPageGroupExtensions(page); _afpDataStream.startPage(_pageWidth, _pageHeight, 0); renderPageObjectExtensions(page); if (_pages == null) { _pages = new HashMap(); } _pages.put(page, _afpDataStream.savePage()); } /** * @see org.apache.fop.render.Renderer#processOffDocumentItem(OffDocumentItem) */ public void processOffDocumentItem(OffDocumentItem odi) { // TODO } /** @see org.apache.fop.render.Renderer#getGraphics2DAdapter() */ public Graphics2DAdapter getGraphics2DAdapter() { return new AFPGraphics2DAdapter(); } /** * @see org.apache.fop.render.AbstractRenderer#startVParea(CTM, Rectangle2D) */ public void startVParea(CTM ctm, Rectangle2D clippingRect) { // dummy not used } /** * @see org.apache.fop.render.AbstractRenderer#endVParea() */ public void endVParea() { // dummy not used } /** * Renders a region viewport.* * The region may clip the area and it establishes a position from where * the region is placed.
* * @param port The region viewport to be rendered */ public void renderRegionViewport(RegionViewport port) { if (port != null) { Rectangle2D view = port.getViewArea(); // The CTM will transform coordinates relative to // this region-reference area into page coords, so // set origin for the region to 0,0. currentBPPosition = 0; currentIPPosition = 0; RegionReference regionReference = port.getRegionReference(); handleRegionTraits(port); /* _afpDataStream.startOverlay(mpts2units(view.getX()) , mpts2units(view.getY()) , mpts2units(view.getWidth()) , mpts2units(view.getHeight()) , rotation); */ pushViewPortPos(new ViewPortPos(view, regionReference.getCTM())); if (regionReference.getRegionClass() == FO_REGION_BODY) { renderBodyRegion((BodyRegion) regionReference); } else { renderRegion(regionReference); } /* _afpDataStream.endOverlay(); */ popViewPortPos(); } } /** * @see org.apache.fop.render.AbstractRenderer#renderBlockViewport(BlockViewport, List) */ protected void renderBlockViewport(BlockViewport bv, List children) { // clip and position viewport if necessary // save positions int saveIP = currentIPPosition; int saveBP = currentBPPosition; //String saveFontName = currentFontName; CTM ctm = bv.getCTM(); int borderPaddingStart = bv.getBorderAndPaddingWidthStart(); int borderPaddingBefore = bv.getBorderAndPaddingWidthBefore(); float x, y; x = (float)(bv.getXOffset() + containingIPPosition) / 1000f; y = (float)(bv.getYOffset() + containingBPPosition) / 1000f; //This is the content-rect float width = (float)bv.getIPD() / 1000f; float height = (float)bv.getBPD() / 1000f; if (bv.getPositioning() == Block.ABSOLUTE || bv.getPositioning() == Block.FIXED) { currentIPPosition = bv.getXOffset(); currentBPPosition = bv.getYOffset(); //For FIXED, we need to break out of the current viewports to the //one established by the page. We save the state stack for restoration //after the block-container has been painted. See below. List breakOutList = null; if (bv.getPositioning() == Block.FIXED) { breakOutList = breakOutOfStateStack(); } CTM tempctm = new CTM(containingIPPosition, containingBPPosition); ctm = tempctm.multiply(ctm); //Adjust for spaces (from margin or indirectly by start-indent etc. x += bv.getSpaceStart() / 1000f; currentIPPosition += bv.getSpaceStart(); y += bv.getSpaceBefore() / 1000f; currentBPPosition += bv.getSpaceBefore(); float bpwidth = (borderPaddingStart + bv.getBorderAndPaddingWidthEnd()) / 1000f; float bpheight = (borderPaddingBefore + bv.getBorderAndPaddingWidthAfter()) / 1000f; drawBackAndBorders(bv, x, y, width + bpwidth, height + bpheight); //Now adjust for border/padding currentIPPosition += borderPaddingStart; currentBPPosition += borderPaddingBefore; Rectangle2D clippingRect = null; clippingRect = new Rectangle(currentIPPosition, currentBPPosition, bv.getIPD(), bv.getBPD()); // startVParea(ctm, clippingRect); pushViewPortPos(new ViewPortPos(clippingRect, ctm)); currentIPPosition = 0; currentBPPosition = 0; renderBlocks(bv, children); //endVParea(); popViewPortPos(); if (breakOutList != null) { restoreStateStackAfterBreakOut(breakOutList); } currentIPPosition = saveIP; currentBPPosition = saveBP; } else { currentBPPosition += bv.getSpaceBefore(); //borders and background in the old coordinate system handleBlockTraits(bv); //Advance to start of content area currentIPPosition += bv.getStartIndent(); CTM tempctm = new CTM(containingIPPosition, currentBPPosition); ctm = tempctm.multiply(ctm); //Now adjust for border/padding currentBPPosition += borderPaddingBefore; Rectangle2D clippingRect = null; clippingRect = new Rectangle(currentIPPosition, currentBPPosition, bv.getIPD(), bv.getBPD()); //startVParea(ctm, clippingRect); pushViewPortPos(new ViewPortPos(clippingRect, ctm)); currentIPPosition = 0; currentBPPosition = 0; renderBlocks(bv, children); //endVParea(); popViewPortPos(); currentIPPosition = saveIP; currentBPPosition = saveBP; currentBPPosition += (int)(bv.getAllocBPD()); } //currentFontName = saveFontName; } /** * @see org.apache.fop.render.Renderer#renderPage(PageViewport) */ public void renderPage(PageViewport page) { // initializeRootExtensions(page); _currentFontFamily = ""; _currentFontSize = 0; _pageFontCounter = 0; _currentPageFonts.clear(); _lineCache = new HashSet(); Rectangle2D bounds = page.getViewArea(); _pageWidth = mpts2units(bounds.getWidth()); _pageHeight = mpts2units(bounds.getHeight()); if (_pages != null && _pages.containsKey(page)) { _afpDataStream.restorePage((PageObject)_pages.remove(page)); } else { // renderPageGroupExtensions(page); _afpDataStream.startPage(_pageWidth, _pageHeight, 0); renderPageObjectExtensions(page); } pushViewPortPos(new ViewPortPos()); renderPageAreas(page.getPage()); Iterator i = _currentPageFonts.values().iterator(); while (i.hasNext()) { AFPFontAttributes afpFontAttributes = (AFPFontAttributes) i.next(); _afpDataStream.createFont( afpFontAttributes.getFontReference(), afpFontAttributes.getFont(), afpFontAttributes.getPointSize()); } try { _afpDataStream.endPage(); } catch (IOException ioex) { // TODO What shall we do? } popViewPortPos(); } /** * Clip using the current path. * @see org.apache.fop.render.AbstractPathOrientedRenderer#clip */ public void clip() { // TODO } /** * Clip using a rectangular area. * @see org.apache.fop.render.AbstractPathOrientedRenderer#clipRect(float, float, float, float) */ public void clipRect(float x, float y, float width, float height) { // TODO } /** * Moves the current point to (x, y), omitting any connecting line segment. * @see org.apache.fop.render.AbstractPathOrientedRenderer#moveTo(float, float) */ public void moveTo(float x, float y) { // TODO } /** * Appends a straight line segment from the current point to (x, y). The * new current point is (x, y). * @see org.apache.fop.render.AbstractPathOrientedRenderer#lineTo(float, float) */ public void lineTo(float x, float y) { // TODO } /** * Closes the current subpath by appending a straight line segment from * the current point to the starting point of the subpath. * @see org.apache.fop.render.AbstractPathOrientedRenderer#closePath */ public void closePath() { // TODO } /** * Fill a rectangular area. * @see org.apache.fop.render.AbstractPathOrientedRenderer#fillRect(float, float, float, float) */ public void fillRect(float x, float y, float width, float height) { /* _afpDataStream.createShading( pts2units(x), pts2units(y), pts2units(width), pts2units(height), _currentColor.getRed(), _currentColor.getGreen(), _currentColor.getBlue()); */ _afpDataStream.createLine( pts2units(x), pts2units(y), pts2units(x + width), pts2units(y), pts2units(height), _currentColor); } /** * Draw a border segment of an XSL-FO style border. * @see org.apache.fop.render.AbstractPathOrientedRenderer#drawBorderLine(float, float, float, float, * boolean, boolean, int, Color) */ public void drawBorderLine(float x1, float y1, float x2, float y2, boolean horz, boolean startOrBefore, int style, Color col) { float w = x2 - x1; float h = y2 - y1; if ((w < 0) || (h < 0)) { log.error("Negative extent received. Border won't be painted."); return; } switch (style) { case Constants.EN_DOUBLE: if (horz) { float h3 = h / 3; float ym1 = y1; float ym2 = ym1 + h3 + h3; _afpDataStream.createLine( pts2units(x1), pts2units(ym1), pts2units(x2), pts2units(ym1), pts2units(h3), col ); _afpDataStream.createLine( pts2units(x1), pts2units(ym2), pts2units(x2), pts2units(ym2), pts2units(h3), col ); } else { float w3 = w / 3; float xm1 = x1; float xm2 = xm1 + w3 + w3; _afpDataStream.createLine( pts2units(xm1), pts2units(y1), pts2units(xm1), pts2units(y2), pts2units(w3), col ); _afpDataStream.createLine( pts2units(xm2), pts2units(y1), pts2units(xm2), pts2units(y2), pts2units(w3), col ); } break; case Constants.EN_DASHED: if (horz) { float w2 = 2 * h; while (x1 + w2 < x2) { _afpDataStream.createLine( pts2units(x1), pts2units(y1), pts2units(x1 + w2), pts2units(y1), pts2units(h), col ); x1 += 2 * w2; } } else { float h2 = 2 * w; while (y1 + h2 < y2) { _afpDataStream.createLine( pts2units(x1), pts2units(y1), pts2units(x1), pts2units(y1 + h2), pts2units(w), col ); y1 += 2 * h2; } } break; case Constants.EN_DOTTED: if (horz) { while (x1 + h < x2) { _afpDataStream.createLine( pts2units(x1), pts2units(y1), pts2units(x1 + h), pts2units(y1), pts2units(h), col ); x1 += 2 * h; } } else { while (y1 + w < y2) { _afpDataStream.createLine( pts2units(x1), pts2units(y1), pts2units(x1), pts2units(y1 + w), pts2units(w), col ); y1 += 2 * w; } } break; case Constants.EN_GROOVE: case Constants.EN_RIDGE: { float colFactor = (style == EN_GROOVE ? 0.4f : -0.4f); if (horz) { Color uppercol = lightenColor(col, -colFactor); Color lowercol = lightenColor(col, colFactor); float h3 = h / 3; float ym1 = y1; _afpDataStream.createLine( pts2units(x1), pts2units(ym1), pts2units(x2), pts2units(ym1), pts2units(h3), uppercol ); _afpDataStream.createLine( pts2units(x1), pts2units(ym1 + h3), pts2units(x2), pts2units(ym1 + h3), pts2units(h3), col ); _afpDataStream.createLine( pts2units(x1), pts2units(ym1 + h3 + h3), pts2units(x2), pts2units(ym1 + h3 + h3), pts2units(h3), lowercol ); } else { Color leftcol = lightenColor(col, -colFactor); Color rightcol = lightenColor(col, colFactor); float w3 = w / 3; float xm1 = x1 + (w3 / 2); _afpDataStream.createLine( pts2units(xm1), pts2units(y1), pts2units(xm1), pts2units(y2), pts2units(w3), leftcol ); _afpDataStream.createLine( pts2units(xm1 + w3), pts2units(y1), pts2units(xm1 + w3), pts2units(y2), pts2units(w3), col ); _afpDataStream.createLine( pts2units(xm1 + w3 + w3), pts2units(y1), pts2units(xm1 + w3 + w3), pts2units(y2), pts2units(w3), rightcol ); } break; } case Constants.EN_HIDDEN: break; case Constants.EN_INSET: case Constants.EN_OUTSET: default: _afpDataStream.createLine( pts2units(x1), pts2units(y1), pts2units(horz ? x2 : x1), pts2units(horz ? y1 : y2), pts2units(Math.abs(horz ? (y2 - y1) : (x2 - x1))), col ); } } /** * @see org.apache.fop.render.PrintRenderer#createRendererContext( * int, int, int, int, java.util.Map) */ protected RendererContext createRendererContext(int x, int y, int width, int height, Map foreignAttributes) { RendererContext context; context = super.createRendererContext(x, y, width, height, foreignAttributes); context.setProperty(AFPRendererContextConstants.AFP_GRAYSCALE, new Boolean(!this.colorImages)); return context; } /** * Draw an image at the indicated location. * @see org.apache.fop.render.AbstractPathOrientedRenderer#drawImage(String, Rectangle2D, Map) */ public void drawImage(String url, Rectangle2D pos, Map foreignAttributes) { String name = null; if (_pageSegmentsMap != null) { name = (String)_pageSegmentsMap.get(url); } if (name != null) { int x = mpts2units(pos.getX() + currentIPPosition); int y = mpts2units(pos.getY() + currentBPPosition); _afpDataStream.createIncludePageSegment(name, x, y); } else { url = ImageFactory.getURL(url); ImageFactory fact = userAgent.getFactory().getImageFactory(); FopImage fopimage = fact.getImage(url, userAgent); if (fopimage == null) { return; } if (!fopimage.load(FopImage.DIMENSIONS)) { return; } String mime = fopimage.getMimeType(); if ("text/xml".equals(mime) || MimeConstants.MIME_SVG.equals(mime)) { if (!fopimage.load(FopImage.ORIGINAL_DATA)) { return; } Document doc = ((XMLImage) fopimage).getDocument(); String ns = ((XMLImage) fopimage).getNameSpace(); renderDocument(doc, ns, pos, foreignAttributes); } else if (MimeConstants.MIME_EPS.equals(mime)) { log.warn("EPS images are not supported by this renderer"); /* } else if (MimeConstants.MIME_JPEG.equals(mime)) { if (!fopimage.load(FopImage.ORIGINAL_DATA)) { return; } fact.releaseImage(url, userAgent); int x = mpts2units(pos.getX() + currentIPPosition); int y = mpts2units(pos.getY() + currentBPPosition); int w = mpts2units(pos.getWidth()); int h = mpts2units(pos.getHeight()); ImageObject io = _afpDataStream.getImageObject(); io.setImageViewport(x, y, w, h); io.setImageParameters( (int)(fopimage.getHorizontalResolution() * 10), (int)(fopimage.getVerticalResolution() * 10), fopimage.getWidth(), fopimage.getHeight() ); io.setImageIDESize((byte)fopimage.getBitsPerPixel()); io.setImageEncoding((byte)0x83); io.setImageData(fopimage.getRessourceBytes()); */ } else if (MimeConstants.MIME_TIFF.equals(mime) && fopimage instanceof TIFFImage) { TIFFImage tiffImage = (TIFFImage) fopimage; int x = mpts2units(pos.getX() + currentIPPosition); int y = mpts2units(pos.getY() + currentBPPosition); int w = mpts2units(pos.getWidth()); int h = mpts2units(pos.getHeight()); ImageObject io = _afpDataStream.getImageObject(x, y, w, h); io.setImageParameters( (int)(fopimage.getHorizontalResolution() * 10), (int)(fopimage.getVerticalResolution() * 10), fopimage.getWidth(), fopimage.getHeight() ); if (tiffImage.getStripCount() == 1) { int comp = tiffImage.getCompression(); if (comp == 3) { if (!fopimage.load(FopImage.ORIGINAL_DATA)) { return; } io.setImageEncoding((byte)0x81); io.setImageData(fopimage.getRessourceBytes()); } else if (comp == 4) { if (!fopimage.load(FopImage.ORIGINAL_DATA)) { return; } io.setImageEncoding((byte)0x82); io.setImageData(fopimage.getRessourceBytes()); } else { if (!fopimage.load(FopImage.BITMAP)) { return; } convertToGrayScaleImage(io, fopimage.getBitmaps()); } } else { if (!fopimage.load(FopImage.BITMAP)) { return; } convertToGrayScaleImage(io, fopimage.getBitmaps()); } } else { if (!fopimage.load(FopImage.BITMAP)) { return; } fact.releaseImage(url, userAgent); int x = mpts2units(pos.getX() + currentIPPosition); int y = mpts2units(pos.getY() + currentBPPosition); int w = mpts2units(pos.getWidth()); int h = mpts2units(pos.getHeight()); ImageObject io = _afpDataStream.getImageObject(x, y, w, h); io.setImageParameters( (int)(fopimage.getHorizontalResolution() * 10), (int)(fopimage.getVerticalResolution() * 10), fopimage.getWidth(), fopimage.getHeight() ); if (colorImages) { io.setImageIDESize((byte)24); io.setImageData(fopimage.getBitmaps()); } else { convertToGrayScaleImage(io, fopimage.getBitmaps()); } } } } /** * Writes a BufferedImage to an OutputStream as raw sRGB bitmaps. * @param img the BufferedImage * @param out the OutputStream * @throws IOException In case of an I/O error. */ public static void writeImage(BufferedImage img, OutputStream out) throws IOException { int w = img.getWidth(); int h = img.getHeight(); int[] tmpMap = img.getRGB(0, 0, w, h, null, 0, w); for (int i = 0; i < h; i++) { for (int j = 0; j < w; j++) { int p = tmpMap[i * w + j]; int r = (p >> 16) & 0xFF; int g = (p >> 8) & 0xFF; int b = (p) & 0xFF; out.write((byte)(r & 0xFF)); out.write((byte)(g & 0xFF)); out.write((byte)(b & 0xFF)); } } } /** * Draws a BufferedImage to AFP. * @param bi the BufferedImage * @param resolution the resolution of the BufferedImage * @param x the x coordinate (in mpt) * @param y the y coordinate (in mpt) * @param w the width of the viewport (in mpt) * @param h the height of the viewport (in mpt) */ public void drawBufferedImage(BufferedImage bi, int resolution, int x, int y, int w, int h) { int afpx = mpts2units(x); int afpy = mpts2units(y); int afpw = mpts2units(w); int afph = mpts2units(h); ByteArrayOutputStream baout = new ByteArrayOutputStream(); try { //Serialize image writeImage(bi, baout); byte[] buf = baout.toByteArray(); //Generate image ImageObject io = _afpDataStream.getImageObject(afpx, afpy, afpw, afph); io.setImageParameters( resolution, resolution, bi.getWidth(), bi.getHeight() ); if (colorImages) { io.setImageIDESize((byte)24); io.setImageData(buf); } else { //TODO Teach it how to handle grayscale BufferedImages directly //because this is pretty inefficient convertToGrayScaleImage(io, buf); } } catch (IOException ioe) { log.error("Error while serializing bitmap: " + ioe.getMessage(), ioe); } } /** * Establishes a new foreground or fill color. * @see org.apache.fop.render.AbstractPathOrientedRenderer#updateColor(Color, boolean) */ public void updateColor(Color col, boolean fill) { if (fill) { _currentColor = col; } } /** * Restores the state stack after a break out. * @param breakOutList the state stack to restore. */ public void restoreStateStackAfterBreakOut(List breakOutList) { } /** * Breaks out of the state stack to handle fixed block-containers. * @return the saved state stack to recreate later */ public List breakOutOfStateStack() { return null; } /** Saves the graphics state of the rendering engine. */ public void saveGraphicsState() { } /** Restores the last graphics state of the rendering engine. */ public void restoreGraphicsState() { } /** Indicates the beginning of a text object. */ public void beginTextObject() { } /** Indicates the end of a text object. */ public void endTextObject() { } /** * @see org.apache.fop.render.AbstractRenderer#renderImage(Image, Rectangle2D) */ public void renderImage(Image image, Rectangle2D pos) { String url = image.getURL(); drawImage(url, pos); } /** * @see org.apache.fop.render.AbstractRenderer#renderText(TextArea) */ public void renderText(TextArea text) { renderInlineAreaBackAndBorders(text); String name = getInternalFontNameForArea(text); _currentFontSize = ((Integer) text.getTrait(Trait.FONT_SIZE)).intValue(); AFPFont tf = (AFPFont) fontInfo.getFonts().get(name); Color col = (Color) text.getTrait(Trait.COLOR); int vsci = mpts2units(tf.getWidth(' ', _currentFontSize) / 1000 + text.getTextWordSpaceAdjust() + text.getTextLetterSpaceAdjust()); // word.getOffset() = only height of text itself // currentBlockIPPosition: 0 for beginning of line; nonzero // where previous line area failed to take up entire allocated space int rx = currentIPPosition + text.getBorderAndPaddingWidthStart(); int bl = currentBPPosition + text.getOffset() + text.getBaselineOffset(); // Set letterSpacing //float ls = fs.getLetterSpacing() / this.currentFontSize; String worddata = text.getText(); // Create an AFPFontAttributes object from the current font details AFPFontAttributes afpFontAttributes = new AFPFontAttributes(name, tf, _currentFontSize); if (!_currentPageFonts.containsKey(afpFontAttributes.getFontKey())) { // Font not found on current page, so add the new one _pageFontCounter++; afpFontAttributes.setFontReference(_pageFontCounter); _currentPageFonts.put( afpFontAttributes.getFontKey(), afpFontAttributes); } else { // Use the previously stored font attributes afpFontAttributes = (AFPFontAttributes) _currentPageFonts.get( afpFontAttributes.getFontKey()); } // Try and get the encoding to use for the font String encoding = null; try { encoding = tf.getCharacterSet(_currentFontSize).getEncoding(); } catch (Throwable ex) { encoding = AFPConstants.EBCIDIC_ENCODING; log.warn( "renderText():: Error getting encoding for font " + " - using default encoding " + encoding); } try { _afpDataStream.createText( afpFontAttributes.getFontReference(), mpts2units(rx), mpts2units(bl), col, vsci, mpts2units(text.getTextLetterSpaceAdjust()), worddata.getBytes(encoding)); } catch (UnsupportedEncodingException usee) { log.error( "renderText:: Font " + afpFontAttributes.getFontKey() + " caused UnsupportedEncodingException"); } super.renderText(text); renderTextDecoration(tf, _currentFontSize, text, bl, rx); } /** * @see org.apache.fop.render.AbstractRenderer#renderWord(WordArea) */ public void renderWord(WordArea word) { String name = getInternalFontNameForArea(word.getParentArea()); int size = ((Integer) word.getParentArea().getTrait(Trait.FONT_SIZE)).intValue(); AFPFont tf = (AFPFont) fontInfo.getFonts().get(name); String s = word.getWord(); FontMetrics metrics = fontInfo.getMetricsFor(name); super.renderWord(word); } /** * @see org.apache.fop.render.AbstractRenderer#renderSpace(SpaceArea) */ public void renderSpace(SpaceArea space) { String name = getInternalFontNameForArea(space.getParentArea()); int size = ((Integer) space.getParentArea().getTrait(Trait.FONT_SIZE)).intValue(); AFPFont tf = (AFPFont) fontInfo.getFonts().get(name); String s = space.getSpace(); FontMetrics metrics = fontInfo.getMetricsFor(name); super.renderSpace(space); } /** * Render leader area. * This renders a leader area which is an area with a rule. * @param area the leader area to render */ public void renderLeader(Leader area) { renderInlineAreaBackAndBorders(area); int style = area.getRuleStyle(); float startx = (currentIPPosition + area.getBorderAndPaddingWidthStart()) / 1000f; float starty = (currentBPPosition + area.getOffset()) / 1000f; float endx = (currentIPPosition + area.getBorderAndPaddingWidthStart() + area.getIPD()) / 1000f; float ruleThickness = area.getRuleThickness() / 1000f; Color col = (Color)area.getTrait(Trait.COLOR); switch (style) { case EN_SOLID: case EN_DASHED: case EN_DOUBLE: case EN_DOTTED: case EN_GROOVE: case EN_RIDGE: drawBorderLine(startx, starty, endx, starty + ruleThickness, true, true, style, col); break; default: throw new UnsupportedOperationException("rule style not supported"); } super.renderLeader(area); } /** * @see org.apache.fop.render.Renderer#setOptions(Map) */ public void setOptions(Map options) { _afpOptions = options; } /** * Determines the orientation from the string representation, this method * guarantees to return a value of either 0, 90, 180 or 270. * * @return the orientation */ private int getOrientation(String orientationString) { int orientation = 0; if (orientationString != null && orientationString.length() > 0) { try { orientation = Integer.parseInt(orientationString); } catch (NumberFormatException nfe) { log.error( "Cannot use orientation of " + orientation + " defaulting to zero."); orientation = 0; } } else { orientation = 0; } switch (orientation) { case 0 : break; case 90 : break; case 180 : break; case 270 : break; default : log.error( "Cannot use orientation of " + orientation + " defaulting to zero."); orientation = 0; break; } return orientation; } /** * Sets the rotation to be used for portrait pages, valid values are 0 * (default), 90, 180, 270. * * @param rotation * The rotation in degrees. */ public void setPortraitRotation(int rotation) { if (rotation == 0 || rotation == 90 || rotation == 180 || rotation == 270) { _portraitRotation = rotation; } else { throw new IllegalArgumentException("The portrait rotation must be one" + " of the values 0, 90, 180, 270"); } } /** * Sets the rotation to be used for landsacpe pages, valid values are 0, 90, * 180, 270 (default). * * @param rotation * The rotation in degrees. */ public void setLandscapeRotation(int rotation) { if (rotation == 0 || rotation == 90 || rotation == 180 || rotation == 270) { _landscapeRotation = rotation; } else { throw new IllegalArgumentException("The landscape rotation must be one" + " of the values 0, 90, 180, 270"); } } /** * Get the MIME type of the renderer. * * @return The MIME type of the renderer */ public String getMimeType() { return MimeConstants.MIME_AFP; } /** * Method to render the page extension. ** * @param page * the page object */ private void renderPageObjectExtensions(PageViewport page) { _pageSegmentsMap = null; if (page.getExtensionAttachments() != null && page.getExtensionAttachments().size() > 0) { //Extract all AFPPageSetup instances from the attachment list on the s-p-m Iterator i = page.getExtensionAttachments().iterator(); while (i.hasNext()) { ExtensionAttachment attachment = (ExtensionAttachment)i.next(); if (AFPPageSetup.CATEGORY.equals(attachment.getCategory())) { AFPPageSetup aps = (AFPPageSetup)attachment; String element = aps.getElementName(); if (AFPElementMapping.INCLUDE_PAGE_OVERLAY.equals(element)) { String overlay = aps.getName(); if (overlay != null) { _afpDataStream.createIncludePageOverlay(overlay); } } else if (AFPElementMapping.INCLUDE_PAGE_SEGMENT.equals(element)) { String name = aps.getName(); String source = aps.getValue(); if (_pageSegmentsMap == null) { _pageSegmentsMap = new HashMap(); } _pageSegmentsMap.put(source, name); } else if (AFPElementMapping.TAG_LOGICAL_ELEMENT.equals(element)) { String name = aps.getName(); String value = aps.getValue(); if (_pageSegmentsMap == null) { _pageSegmentsMap = new HashMap(); } _afpDataStream.createTagLogicalElement(name, value); } } } } } /** * Converts FOP mpt measurement to afp measurement units * @param mpt the millipoints value */ private int mpts2units(int mpt) { return mpts2units((double) mpt); } /** * Converts FOP pt measurement to afp measurement units * @param mpt the millipoints value */ private int pts2units(float mpt) { return mpts2units(mpt * 1000d); } /** * Converts FOP mpt measurement to afp measurement units * @param mpt the millipoints value */ private int mpts2units(double mpt) { return (int)Math.round(mpt / DPI_CONVERSION_FACTOR_240); } private void convertToGrayScaleImage(ImageObject io, byte raw[]) { int pixelsPerByte = 8 / bitsPerPixel; byte bw[] = new byte[raw.length / (3 * pixelsPerByte)]; int k = 0; for (int i = 0, j = 0; i < raw.length; i += 3, j++) { if (j == pixelsPerByte) { j = 0; k++; } // see http://www.jguru.com/faq/view.jsp?EID=221919 double greyVal = 0.212671d * ((int) raw[i] & 0xff) + 0.715160d * ((int) raw[i + 1] & 0xff) + 0.072169d * ((int) raw[i + 2] & 0xff); switch (bitsPerPixel) { case 1: if (greyVal > 128) { bw[k] |= (byte)(1 << j); } break; case 4: greyVal /= 16; bw[k] |= (byte)((byte)greyVal << (j * 4)); break; case 8: bw[k] = (byte)greyVal; break; } } io.setImageIDESize((byte)bitsPerPixel); io.setImageData(bw); } private class ViewPortPos { int x = 0; int y = 0; int rot = 0; ViewPortPos() { } ViewPortPos(Rectangle2D view, CTM ctm) { ViewPortPos currentVP = (ViewPortPos)viewPortPositions.get(viewPortPositions.size() - 1); int xOrigin; int yOrigin; int width; int height; switch (currentVP.rot) { case 90: width = mpts2units(view.getHeight()); height = mpts2units(view.getWidth()); xOrigin = _pageWidth - width - mpts2units(view.getY()) - currentVP.y; yOrigin = mpts2units(view.getX()) + currentVP.x; break; case 180: width = mpts2units(view.getWidth()); height = mpts2units(view.getHeight()); xOrigin = _pageWidth - width - mpts2units(view.getX()) - currentVP.x; yOrigin = _pageHeight - height - mpts2units(view.getY()) - currentVP.y; break; case 270: width = mpts2units(view.getHeight()); height = mpts2units(view.getWidth()); xOrigin = mpts2units(view.getY()) + currentVP.y; yOrigin = _pageHeight - height - mpts2units(view.getX()) - currentVP.x; break; default: xOrigin = mpts2units(view.getX()) + currentVP.x; yOrigin = mpts2units(view.getY()) + currentVP.y; width = mpts2units(view.getWidth()); height = mpts2units(view.getHeight()); break; } this.rot = currentVP.rot; double ctmf[] = ctm.toArray(); if (ctmf[0] == 0.0d && ctmf[1] == -1.0d && ctmf[2] == 1.0d && ctmf[3] == 0.d) { this.rot += 270; } else if (ctmf[0] == -1.0d && ctmf[1] == 0.0d && ctmf[2] == 0.0d && ctmf[3] == -1.0d) { this.rot += 180; } else if (ctmf[0] == 0.0d && ctmf[1] == 1.0d && ctmf[2] == -1.0d && ctmf[3] == 0.0d) { this.rot += 90; } this.rot %= 360; switch (this.rot) { /* case 0: this.x = mpts2units(view.getX()) + x; this.y = mpts2units(view.getY()) + y; break; case 90: this.x = mpts2units(view.getY()) + y; this.y = _pageWidth - mpts2units(view.getX() + view.getWidth()) - x; break; case 180: this.x = _pageWidth - mpts2units(view.getX() + view.getWidth()) - x; this.y = _pageHeight - mpts2units(view.getY() + view.getHeight()) - y; break; case 270: this.x = _pageHeight - mpts2units(view.getY() + view.getHeight()) - y; this.y = mpts2units(view.getX()) + x; break; */ case 0: this.x = xOrigin; this.y = yOrigin; break; case 90: this.x = yOrigin; this.y = _pageWidth - width - xOrigin; break; case 180: this.x = _pageWidth - width - xOrigin; this.y = _pageHeight - height - yOrigin; break; case 270: this.x = _pageHeight - height - yOrigin; this.y = xOrigin; break; } } public String toString() { return "x:" + x + " y:" + y + " rot:" + rot; } } private List viewPortPositions = new ArrayList(); private void pushViewPortPos(ViewPortPos vpp) { viewPortPositions.add(vpp); _afpDataStream.setOffsets(vpp.x, vpp.y, vpp.rot); } private void popViewPortPos() { viewPortPositions.remove(viewPortPositions.size() - 1); if (viewPortPositions.size() > 0) { ViewPortPos vpp = (ViewPortPos)viewPortPositions.get(viewPortPositions.size() - 1); _afpDataStream.setOffsets(vpp.x, vpp.y, vpp.rot); } } public void setBitsPerPixel(int bitsPerPixel) { this.bitsPerPixel = bitsPerPixel; switch (bitsPerPixel) { case 1: case 4: case 8: break; default: log.warn("Invalid bits_per_pixel value, must be 1, 4 or 8."); bitsPerPixel = 8; break; } } public void setColorImages(boolean colorImages) { this.colorImages = colorImages; } }