123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342 |
- /*
- * 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.ps;
-
- // Java
- import java.awt.geom.AffineTransform;
- import java.io.IOException;
-
- // DOM
- import org.w3c.dom.Document;
- import org.w3c.dom.svg.SVGDocument;
- import org.w3c.dom.svg.SVGSVGElement;
-
- // Batik
- import org.apache.avalon.framework.configuration.Configuration;
- import org.apache.batik.bridge.GVTBuilder;
- import org.apache.batik.bridge.BridgeContext;
- import org.apache.batik.bridge.ViewBox;
- import org.apache.batik.dom.svg.SVGDOMImplementation;
- import org.apache.batik.gvt.GraphicsNode;
-
- // FOP
- import org.apache.fop.fonts.FontInfo;
- import org.apache.fop.render.Renderer;
- import org.apache.fop.render.XMLHandler;
- import org.apache.fop.render.RendererContext;
- import org.apache.fop.svg.SVGUserAgent;
-
- // Commons-Logging
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
-
- /**
- * PostScript XML handler for SVG. Uses Apache Batik for SVG processing.
- * This handler handles XML for foreign objects when rendering to PostScript.
- * It renders SVG to the PostScript document using the PSGraphics2D.
- * The properties from the PostScript renderer are subject to change.
- *
- * @version $Id$
- */
- public class PSSVGHandler implements XMLHandler, PSRendererContextConstants {
-
- /** logging instance */
- private static Log log = LogFactory.getLog(PSSVGHandler.class);
-
- /**
- * Create a new PostScript XML handler for use by the PostScript renderer.
- */
- public PSSVGHandler() {
- }
-
- /** @see org.apache.fop.render.XMLHandler */
- public void handleXML(RendererContext context,
- Document doc, String ns) throws Exception {
- PSInfo psi = getPSInfo(context);
-
- if (SVGDOMImplementation.SVG_NAMESPACE_URI.equals(ns)) {
- renderSVGDocument(context, doc, psi);
- }
- }
-
- /**
- * Get the pdf information from the render context.
- *
- * @param context the renderer context
- * @return the pdf information retrieved from the context
- */
- public static PSInfo getPSInfo(RendererContext context) {
- PSInfo psi = new PSInfo();
- psi.psGenerator = (PSGenerator)context.getProperty(PS_GENERATOR);
- psi.fontInfo = (org.apache.fop.fonts.FontInfo) context.getProperty(PS_FONT_INFO);
- psi.width = ((Integer)context.getProperty(WIDTH)).intValue();
- psi.height = ((Integer)context.getProperty(HEIGHT)).intValue();
- psi.currentXPosition = ((Integer)context.getProperty(XPOS)).intValue();
- psi.currentYPosition = ((Integer)context.getProperty(YPOS)).intValue();
- psi.cfg = (Configuration)context.getProperty(HANDLER_CONFIGURATION);
- return psi;
- }
-
- /**
- * PostScript information structure for drawing the XML document.
- */
- public static class PSInfo {
-
- /** see PS_GENERATOR */
- private PSGenerator psGenerator;
- /** see PS_FONT_INFO */
- private org.apache.fop.fonts.FontInfo fontInfo;
- /** see WIDTH */
- private int width;
- /** see HEIGHT */
- private int height;
- /** see XPOS */
- private int currentXPosition;
- /** see YPOS */
- private int currentYPosition;
- /** see HANDLER_CONFIGURATION */
- private Configuration cfg;
-
- /**
- * Returns the PSGenerator.
- * @return PSGenerator
- */
- public PSGenerator getPSGenerator() {
- return psGenerator;
- }
-
- /**
- * Sets the PSGenerator.
- * @param psGenerator The PSGenerator to set
- */
- public void setPsGenerator(PSGenerator psGenerator) {
- this.psGenerator = psGenerator;
- }
-
- /**
- * Returns the fontInfo.
- * @return FontInfo
- */
- public FontInfo getFontInfo() {
- return fontInfo;
- }
-
- /**
- * Sets the fontInfo.
- * @param fontInfo The fontInfo to set
- */
- public void setFontInfo(FontInfo fontInfo) {
- this.fontInfo = fontInfo;
- }
-
- /**
- * Returns the currentXPosition.
- * @return int
- */
- public int getCurrentXPosition() {
- return currentXPosition;
- }
-
- /**
- * Sets the currentXPosition.
- * @param currentXPosition The currentXPosition to set
- */
- public void setCurrentXPosition(int currentXPosition) {
- this.currentXPosition = currentXPosition;
- }
-
- /**
- * Returns the currentYPosition.
- * @return int
- */
- public int getCurrentYPosition() {
- return currentYPosition;
- }
-
- /**
- * Sets the currentYPosition.
- * @param currentYPosition The currentYPosition to set
- */
- public void setCurrentYPosition(int currentYPosition) {
- this.currentYPosition = currentYPosition;
- }
-
- /**
- * Returns the width.
- * @return int
- */
- public int getWidth() {
- return width;
- }
-
- /**
- * Sets the width.
- * @param width The pageWidth to set
- */
- public void setWidth(int width) {
- this.width = width;
- }
-
- /**
- * Returns the height.
- * @return int
- */
- public int getHeight() {
- return height;
- }
-
- /**
- * Sets the height.
- * @param height The height to set
- */
- public void setHeight(int height) {
- this.height = height;
- }
-
- /**
- * Returns the height.
- * @return int
- */
- public Configuration getHandlerConfiguration() {
- return this.cfg;
- }
-
- /**
- * Sets the handler configuration.
- * @param cfg the configuration object
- */
- public void setHeight(Configuration cfg) {
- this.cfg = cfg;
- }
-
- }
-
- /**
- * Render the svg document.
- * @param context the renderer context
- * @param doc the svg document
- * @param psInfo the pdf information of the current context
- */
- protected void renderSVGDocument(RendererContext context,
- Document doc, PSInfo psInfo) {
- int xOffset = psInfo.currentXPosition;
- int yOffset = psInfo.currentYPosition;
- PSGenerator gen = psInfo.psGenerator;
-
- //Controls whether text painted by Batik is generated using text or path operations
- boolean strokeText = false;
- Configuration cfg = psInfo.getHandlerConfiguration();
- if (cfg != null) {
- strokeText = cfg.getChild("stroke-text", true).getValueAsBoolean(strokeText);
- }
-
- SVGUserAgent ua
- = new SVGUserAgent(
- context.getUserAgent().getSourcePixelUnitToMillimeter(),
- new AffineTransform());
-
- GVTBuilder builder = new GVTBuilder();
- BridgeContext ctx = new BridgeContext(ua);
- if (!strokeText) {
- PSTextPainter textPainter = new PSTextPainter(psInfo.getFontInfo());
- ctx.setTextPainter(textPainter);
- PSTextElementBridge tBridge = new PSTextElementBridge(textPainter);
- ctx.putBridge(tBridge);
- }
-
- GraphicsNode root;
- try {
- root = builder.build(ctx, doc);
- } catch (Exception e) {
- log.error("SVG graphic could not be built: "
- + e.getMessage(), e);
- return;
- }
- // get the 'width' and 'height' attributes of the SVG document
- float w = (float)ctx.getDocumentSize().getWidth() * 1000f;
- float h = (float)ctx.getDocumentSize().getHeight() * 1000f;
-
- float sx = psInfo.getWidth() / (float)w;
- float sy = psInfo.getHeight() / (float)h;
-
- ctx = null;
- builder = null;
-
- try {
- gen.commentln("%FOPBeginSVG");
- gen.saveGraphicsState();
- /*
- * Clip to the svg area.
- * Note: To have the svg overlay (under) a text area then use
- * an fo:block-container
- */
- gen.writeln("newpath");
- gen.defineRect(xOffset / 1000f, yOffset / 1000f,
- psInfo.getWidth() / 1000f, psInfo.getHeight() / 1000f);
- gen.writeln("clip");
-
- // transform so that the coordinates (0,0) is from the top left
- // and positive is down and to the right. (0,0) is where the
- // viewBox puts it.
- gen.concatMatrix(sx, 0, 0, sy, xOffset / 1000f, yOffset / 1000f);
-
- SVGSVGElement svg = ((SVGDocument)doc).getRootElement();
- AffineTransform at = ViewBox.getPreserveAspectRatioTransform(svg,
- psInfo.getWidth() / 1000f, psInfo.getHeight() / 1000f);
- /*
- if (!at.isIdentity()) {
- double[] vals = new double[6];
- at.getMatrix(vals);
- gen.concatMatrix(vals);
- }*/
-
- final boolean textAsShapes = false;
- PSGraphics2D graphics = new PSGraphics2D(textAsShapes, gen);
- graphics.setGraphicContext(new org.apache.batik.ext.awt.g2d.GraphicContext());
- AffineTransform transform = new AffineTransform();
- // scale to viewbox
- transform.translate(xOffset, yOffset);
- gen.getCurrentState().concatMatrix(transform);
- try {
- root.paint(graphics);
- } catch (Exception e) {
- log.error("SVG graphic could not be rendered: "
- + e.getMessage(), e);
- }
-
- gen.restoreGraphicsState();
- gen.commentln("%FOPEndSVG");
- } catch (IOException ioe) {
- log.error("SVG graphic could not be rendered: "
- + ioe.getMessage(), ioe);
- }
- }
-
- /** @see org.apache.fop.render.XMLHandler#supportsRenderer(org.apache.fop.render.Renderer) */
- public boolean supportsRenderer(Renderer renderer) {
- return (renderer instanceof PSRenderer);
- }
-
- /** @see org.apache.fop.render.XMLHandler#getNamespace() */
- public String getNamespace() {
- return SVGDOMImplementation.SVG_NAMESPACE_URI;
- }
-
- }
|