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- /*
- * Copyright 1999-2005 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.render.svg;
-
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.area.CTM;
- import org.apache.fop.area.PageViewport;
- import org.apache.fop.area.LineArea;
- import org.apache.fop.area.inline.ForeignObject;
- import org.apache.fop.area.inline.Leader;
- import org.apache.fop.area.inline.TextArea;
- import org.apache.fop.svg.SVGUtilities;
- import org.apache.fop.fonts.FontInfo;
- import org.apache.fop.apps.FOUserAgent;
-
- /* org.w3c.dom.Document is not imported to avoid conflict with
- org.apache.fop.control.Document */
- import org.w3c.dom.DOMImplementation;
- import org.w3c.dom.Document;
- import org.w3c.dom.Element;
- import org.w3c.dom.Text;
- import org.apache.batik.dom.svg.SVGDOMImplementation;
- import org.apache.batik.transcoder.svg2svg.SVGTranscoder;
- import org.apache.batik.transcoder.TranscoderInput;
- import org.apache.batik.transcoder.TranscoderOutput;
- import org.apache.batik.transcoder.TranscoderException;
-
- import java.awt.Color;
- import java.awt.image.BufferedImage;
- import java.awt.geom.Rectangle2D;
- import java.util.HashMap;
- import java.io.OutputStream;
- import java.io.IOException;
- import java.io.OutputStreamWriter;
-
- import org.apache.fop.render.AbstractRenderer;
- import org.apache.fop.render.XMLHandler;
- import org.apache.fop.render.RendererContext;
-
- /**
- * This is the SVG renderer.
- */
- public class SVGRenderer extends AbstractRenderer {
-
- /** SVG MIME type */
- public static final String SVG_MIME_TYPE = "image/svg+xml";
-
- /** SVG namespace */
- public static final String SVG_NAMESPACE = SVGDOMImplementation.SVG_NAMESPACE_URI;
-
- private org.w3c.dom.Document svgDocument;
- private Element svgRoot;
- private Element currentPageG = null;
- private Element lastLink = null;
- private String lastViewbox = null;
-
- private Element docDefs = null;
- private Element pageDefs = null;
- private Element pagesGroup = null;
-
- // first sequence title
- private LineArea docTitle = null;
-
- private OutputStream ostream;
-
- private float totalWidth = 0;
- private float totalHeight = 0;
- private float sequenceWidth = 0;
- private float sequenceHeight = 0;
-
- private float pageWidth = 0;
- private float pageHeight = 0;
- private int pageNumber = 0;
-
- private HashMap fontNames = new HashMap();
- private HashMap fontStyles = new HashMap();
- private Color saveColor = null;
-
- /**
- * The current (internal) font name
- */
- private String currentFontName;
-
- /**
- * The current font size in millipoints
- */
- private int currentFontSize;
-
- /**
- * The current colour's red, green and blue component
- */
- private float currentRed = 0;
- private float currentGreen = 0;
- private float currentBlue = 0;
-
- /**
- * Creates a new SVG renderer.
- */
- public SVGRenderer() {
- }
-
- /**
- * @see org.apache.fop.render.Renderer#setUserAgent(FOUserAgent)
- */
- public void setUserAgent(FOUserAgent agent) {
- super.setUserAgent(agent);
-
- //Note: This is done here as having two service lookup files in the same IDE project
- //will end up with one overwriting the other when all sources are compiled in to the
- //same target directory. Remove this code and add an entry in the XMLHandler resource
- //file when this renderer exits the sandbox.
- XMLHandler handler = agent.getXMLHandlerRegistry().getXMLHandler(this, SVG_NAMESPACE);
- if (handler == null) {
- agent.getXMLHandlerRegistry().addXMLHandler("org.apache.fop.render.svg.SVGSVGHandler");
- }
- }
-
- /**
- * @see org.apache.fop.render.Renderer#setupFontInfo(FontInfo)
- */
- public void setupFontInfo(FontInfo fontInfo) {
- // create a temp Image to test font metrics on
- BufferedImage fontImage =
- new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
- org.apache.fop.render.java2d.FontSetup.setup(fontInfo,
- fontImage.createGraphics());
- }
-
- /**
- * @see org.apache.fop.render.Renderer#startRenderer(OutputStream)
- */
- public void startRenderer(OutputStream outputStream)
- throws IOException {
- ostream = outputStream;
- DOMImplementation impl = SVGDOMImplementation.getDOMImplementation();
- svgDocument = impl.createDocument(SVG_NAMESPACE, "svg", null);
- svgRoot = svgDocument.getDocumentElement();
- /*
- ProcessingInstruction pi =
- svgDocument.createProcessingInstruction("xml",
- " version=\"1.0\" encoding=\"ISO-8859-1\"");
- svgDocument.insertBefore(pi, svgRoot);
- */
-
- docDefs = svgDocument.createElementNS(SVG_NAMESPACE, "defs");
- svgRoot.appendChild(docDefs);
-
- pagesGroup = svgDocument.createElementNS(SVG_NAMESPACE, "g");
- pageDefs = svgDocument.createElementNS(SVG_NAMESPACE, "defs");
- pagesGroup.appendChild(pageDefs);
- svgRoot.appendChild(pagesGroup);
-
- }
-
- /**
- * @see org.apache.fop.render.Renderer#stopRenderer()
- */
- public void stopRenderer() throws IOException {
- totalWidth += sequenceWidth;
- if (sequenceHeight > totalHeight) {
- totalHeight = sequenceHeight;
- }
-
- svgRoot.setAttributeNS(null, "width", "" + (totalWidth + 1));
- svgRoot.setAttributeNS(null, "height", "" + (totalHeight + 1));
- //svgRoot.setAttributeNS(null, "viewBox", "0 0 " + pageWidth + " " + pageHeight);
- SVGTranscoder svgT = new SVGTranscoder();
- TranscoderInput input = new TranscoderInput(svgDocument);
- TranscoderOutput output =
- new TranscoderOutput(new OutputStreamWriter(ostream));
- try {
- svgT.transcode(input, output);
- } catch (TranscoderException e) {
- log.error("could not write svg file :" + e.getMessage(), e);
- }
- ostream.flush();
- ostream = null;
-
- svgDocument = null;
- svgRoot = null;
- currentPageG = null;
- lastLink = null;
-
- totalWidth = 0;
- totalHeight = 0;
-
- pageNumber = 0;
- }
-
- /**
- * @see org.apache.fop.render.Renderer#startPageSequence(LineArea)
- */
- public void startPageSequence(LineArea seqTitle) {
- totalWidth += sequenceWidth;
- if (sequenceHeight > totalHeight) {
- totalHeight = sequenceHeight;
- }
- sequenceWidth = 0;
- sequenceHeight = 0;
- if (seqTitle != null && docTitle == null) {
- // convert first title to a string and set for svg document title
- docTitle = seqTitle;
- String str = convertTitleToString(seqTitle);
- Element svgTitle = svgDocument.createElementNS(SVG_NAMESPACE, "title");
- Text strNode = svgDocument.createTextNode(str);
- svgTitle.appendChild(strNode);
- svgRoot.insertBefore(svgTitle, svgRoot.getFirstChild());
- }
- }
-
- /**
- * @see org.apache.fop.render.Renderer#renderPage(PageViewport)
- */
- public void renderPage(PageViewport page) throws IOException, FOPException {
- float lastWidth = pageWidth;
- float lastHeight = pageHeight;
-
- Rectangle2D area = page.getViewArea();
- pageWidth = (float) area.getWidth() / 1000f;
- pageHeight = (float) area.getHeight() / 1000f;
-
- // if there is a link from the last page
- if (lastLink != null) {
- lastLink.setAttributeNS(null, "xlink:href", "#svgView(viewBox("
- + totalWidth + ", "
- + sequenceHeight + ", "
- + pageWidth + ", "
- + pageHeight + "))");
- pagesGroup.appendChild(lastLink);
- }
-
- currentPageG = svgDocument.createElementNS(SVG_NAMESPACE, "svg");
- currentPageG.setAttributeNS(null, "viewbox",
- "0 0 " + (int) pageWidth + " " + (int) pageHeight);
- currentPageG.setAttributeNS(null, "width",
- "" + ((int) pageWidth + 1));
- currentPageG.setAttributeNS(null, "height",
- "" + ((int) pageHeight + 1));
- currentPageG.setAttributeNS(null, "id", "Page-" + pageNumber);
- currentPageG.setAttributeNS(null, "style", "font-family:sanserif;font-size:12");
- pageDefs.appendChild(currentPageG);
-
- if (pageWidth > sequenceWidth) {
- sequenceWidth = pageWidth;
- }
- sequenceHeight += pageHeight;
-
- Element border =
- SVGUtilities.createRect(svgDocument, 0, 0, pageWidth,
- pageHeight);
- border.setAttributeNS(null, "style", "fill:none;stroke:black");
- currentPageG.appendChild(border);
-
- // render the page contents
- super.renderPage(page);
-
- Element use = svgDocument.createElementNS(SVG_NAMESPACE, "use");
- use.setAttributeNS(null, "xlink:href", "#Page-" + pageNumber);
- use.setAttributeNS(null, "x", "" + totalWidth);
- use.setAttributeNS(null, "y", "" + (sequenceHeight - pageHeight));
- pagesGroup.appendChild(use);
-
- Element lastPageLink = svgDocument.createElementNS(SVG_NAMESPACE, "a");
- if (lastLink != null) {
- lastPageLink.setAttributeNS(null, "xlink:href", lastViewbox);
- } else {
- lastPageLink.setAttributeNS(null, "xlink:href",
- "#svgView(viewBox("
- + totalWidth + ", "
- + (sequenceHeight - pageHeight) + ", "
- + pageWidth + ", "
- + pageHeight + "))");
- }
- pagesGroup.appendChild(lastPageLink);
-
- // setup a link to the next page, only added when the
- // next page is rendered
- Element rect = SVGUtilities.createRect(svgDocument, totalWidth,
- (sequenceHeight - pageHeight), pageWidth / 2, pageHeight);
- rect.setAttributeNS(null, "style", "fill:blue;visibility:hidden");
- lastPageLink.appendChild(rect);
-
- lastLink = svgDocument.createElementNS(SVG_NAMESPACE, "a");
- rect = SVGUtilities.createRect(svgDocument,
- totalWidth + pageWidth / 2,
- (sequenceHeight - pageHeight), pageWidth / 2, pageHeight);
- rect.setAttributeNS(null, "style", "fill:blue;visibility:hidden");
- lastLink.appendChild(rect);
-
- lastViewbox = "#svgView(viewBox("
- + totalWidth + ", "
- + (sequenceHeight - pageHeight) + ", "
- + pageWidth + ", "
- + pageHeight + "))";
-
- pageNumber++;
-
- }
-
- /**
- * Method renderForeignObject.
- * @param fo the foreign object
- */
- public void renderForeignObject(ForeignObject fo, Rectangle2D pos) {
- org.w3c.dom.Document doc = fo.getDocument();
- String ns = fo.getNameSpace();
- renderDocument(doc, ns, pos);
- }
-
- /**
- * Renders an XML document (SVG for example).
- *
- * @param doc DOM document representing the XML document
- * @param ns Namespace for the document
- * @param pos Position on the page
- */
- public void renderDocument(Document doc, String ns, Rectangle2D pos) {
- RendererContext context;
- context = new RendererContext(this, getMimeType());
- context.setUserAgent(userAgent);
-
- context.setProperty(SVGRendererContextConstants.SVG_DOCUMENT, svgDocument);
- context.setProperty(SVGRendererContextConstants.SVG_PAGE_G, currentPageG);
- context.setProperty(SVGRendererContextConstants.XPOS,
- new Integer(currentIPPosition + (int)pos.getX()));
- context.setProperty(SVGRendererContextConstants.YPOS,
- new Integer(currentBPPosition + (int)pos.getY()));
- context.setProperty(SVGRendererContextConstants.WIDTH,
- new Integer((int)pos.getWidth()));
- context.setProperty(SVGRendererContextConstants.HEIGHT,
- new Integer((int) pos.getHeight()));
-
- renderXML(context, doc, ns);
- }
-
- /**
- * @see org.apache.fop.render.AbstractRenderer#renderLeader(Leader)
- */
- public void renderLeader(Leader area) {
- String style = "stroke:black;stroke-width:"
- + (area.getRuleThickness() / 1000) + ";";
- switch (area.getRuleStyle()) {
- case EN_DOTTED:
- style += "stroke-dasharray:1,1";
- break;
- case EN_DASHED:
- style += "stroke-dasharray:5,1";
- break;
- case EN_SOLID:
- break;
- case EN_DOUBLE:
- break;
- case EN_GROOVE:
- break;
- case EN_RIDGE:
- break;
- }
- Element line = SVGUtilities.createLine(svgDocument,
- currentIPPosition / 1000,
- (currentBPPosition + area.getOffset()
- - area.getRuleThickness() / 2) / 1000,
- (currentIPPosition + area.getIPD()) / 1000,
- (currentBPPosition + area.getOffset()
- - area.getRuleThickness() / 2) / 1000);
- line.setAttributeNS(null, "style", style);
- currentPageG.appendChild(line);
-
- super.renderLeader(area);
- }
-
- /**
- * @see org.apache.fop.render.AbstractRenderer#renderText(TextArea)
- */
- public void renderText(TextArea text) {
- Element textElement = SVGUtilities.createText(svgDocument,
- currentIPPosition / 1000,
- (currentBPPosition + text.getOffset()
- + text.getBaselineOffset()) / 1000,
- text.getText());
- currentPageG.appendChild(textElement);
-
- super.renderText(text);
- }
-
- /**
- * @see org.apache.fop.render.AbstractRenderer#renderCharacter(Character)
- */
- public void renderCharacter(org.apache.fop.area.inline.Character ch) {
- Element text = SVGUtilities.createText(svgDocument,
- currentIPPosition / 1000,
- (currentBPPosition + ch.getOffset()
- + ch.getBaselineOffset()) / 1000,
- "" + ch.getChar());
- currentPageG.appendChild(text);
-
- super.renderCharacter(ch);
- }
-
- /** @see org.apache.fop.render.AbstractRenderer */
- public String getMimeType() {
- return SVG_MIME_TYPE;
- }
-
- /**
- * @see org.apache.fop.render.AbstractRenderer#startVParea(CTM, Rectangle2D)
- */
- protected void startVParea(CTM ctm, Rectangle2D clippingRect) {
- // TODO Auto-generated method stub
- }
-
- /**
- * @see org.apache.fop.render.AbstractRenderer#endVParea()
- */
- protected void endVParea() {
- // TODO Auto-generated method stub
- }
-
- }
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