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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.afp;
// FOP
import java.awt.geom.AffineTransform;
import java.io.IOException;
import java.util.Map;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.batik.bridge.BridgeContext;
import org.apache.batik.bridge.GVTBuilder;
import org.apache.batik.dom.AbstractDocument;
import org.apache.batik.dom.svg.SVGDOMImplementation;
import org.apache.batik.gvt.GraphicsNode;
import org.apache.fop.render.AbstractGenericSVGHandler;
import org.apache.fop.render.Renderer;
import org.apache.fop.render.RendererContext;
import org.apache.fop.render.RendererContextConstants;
import org.apache.fop.render.afp.modca.AFPConstants;
import org.apache.fop.render.afp.modca.AFPDataStream;
import org.apache.fop.render.afp.modca.GraphicsObject;
import org.apache.fop.svg.SVGUserAgent;
import org.w3c.dom.Document;
/**
* AFP XML handler for SVG. Uses Apache Batik for SVG processing.
* This handler handles XML for foreign objects and delegates to AFPGraphics2DAdapter.
* @see AFPGraphics2DAdapter
*/
public class AFPSVGHandler extends AbstractGenericSVGHandler {
/** {@inheritDoc} */
public void handleXML(RendererContext context,
Document doc, String ns) throws Exception {
AFPInfo afpi = getAFPInfo(context);
if (SVGDOMImplementation.SVG_NAMESPACE_URI.equals(ns)) {
renderSVGDocument(context, doc, afpi);
}
}
/**
* Get the AFP information from the render context.
*
* @param context the renderer context
* @return the AFP information retrieved from the context
*/
public static AFPInfo getAFPInfo(RendererContext context) {
AFPInfo afpi = new AFPInfo();
afpi.setWidth(((Integer)context.getProperty(WIDTH)).intValue());
afpi.setHeight(((Integer)context.getProperty(HEIGHT)).intValue());
afpi.setX(((Integer)context.getProperty(XPOS)).intValue());
afpi.setY(((Integer)context.getProperty(YPOS)).intValue());
afpi.setHandlerConfiguration((Configuration)context.getProperty(HANDLER_CONFIGURATION));
afpi.setFontInfo((org.apache.fop.fonts.FontInfo)context.getProperty(
AFPRendererContextConstants.AFP_FONT_INFO));
afpi.setState((AFPState)context.getProperty(
AFPRendererContextConstants.AFP_STATE));
afpi.setAFPDataStream((AFPDataStream)context.getProperty(
AFPRendererContextConstants.AFP_DATASTREAM));
return afpi;
}
/**
* Render the SVG document.
*
* @param context the renderer context
* @param doc the SVG document
* @param afpInfo the AFPInfo renderer parameters
* @throws IOException In case of an I/O error while painting the image
*/
protected void renderSVGDocument(final RendererContext context,
final Document doc, AFPInfo afpInfo) throws IOException {
final boolean textAsShapes = false;
AFPGraphics2D graphics = new AFPGraphics2D(textAsShapes);
graphics.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext());
graphics.setAFPInfo(afpInfo);
GVTBuilder builder = new GVTBuilder();
boolean strokeText = false;
Configuration cfg = afpInfo.getHandlerConfiguration();
if (cfg != null) {
strokeText = cfg.getChild("stroke-text", true).getValueAsBoolean(strokeText);
}
SVGUserAgent svgUserAgent = new SVGUserAgent(context.getUserAgent(), new AffineTransform());
BridgeContext ctx = new BridgeContext(svgUserAgent);
AFPTextHandler afpTextHandler = null;
//Controls whether text painted by Batik is generated using text or path operations
if (!strokeText) {
afpTextHandler = new AFPTextHandler(graphics);
graphics.setCustomTextHandler(afpTextHandler);
AFPTextPainter textPainter = new AFPTextPainter(afpTextHandler);
ctx.setTextPainter(textPainter);
AFPTextElementBridge tBridge = new AFPTextElementBridge(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;
}
log.debug("Generating SVG at "
+ afpInfo.getResolution() + "dpi.");
int res = afpInfo.getResolution();
double w = ctx.getDocumentSize().getWidth() * 1000f;
double h = ctx.getDocumentSize().getHeight() * 1000f;
// convert to afp inches
double scaleX = ((afpInfo.getWidth() / w) * res) / AFPConstants.DPI_72;
double scaleY = ((afpInfo.getHeight() / h) * res) / AFPConstants.DPI_72;
double xOffset = (afpInfo.getX() * res) / AFPConstants.DPI_72_MPTS;
double yOffset = ((afpInfo.getHeight() - afpInfo.getY()) * res) / AFPConstants.DPI_72_MPTS;
// Transformation matrix that establishes the local coordinate system for the SVG graphic
// in relation to the current coordinate system (note: y axis is inverted)
AffineTransform trans = new AffineTransform(scaleX, 0, 0, -scaleY, xOffset, yOffset);
graphics.setTransform(trans);
int x = (int)Math.round((afpInfo.getX() * 25.4f) / 1000f);
int y = (int)Math.round((afpInfo.getY() * 25.4f) / 1000f);
int width = (int)Math.round((afpInfo.getWidth() * res) / AFPConstants.DPI_72_MPTS);
int height = (int)Math.round((afpInfo.getHeight() * res) / AFPConstants.DPI_72_MPTS);
// set the data object parameters
DataObjectInfo dataObjectInfo = new DataObjectInfo();
String docUri = ((AbstractDocument)doc).getDocumentURI();
dataObjectInfo.setUri(docUri);
ObjectAreaInfo objectAreaInfo = new ObjectAreaInfo();
objectAreaInfo.setX(x);
objectAreaInfo.setY(y);
objectAreaInfo.setWidth(width);
objectAreaInfo.setHeight(height);
objectAreaInfo.setWidthRes(res);
objectAreaInfo.setHeightRes(res);
dataObjectInfo.setObjectAreaInfo(objectAreaInfo);
Map/*<QName, String>*/ foreignAttributes
= (Map/*<QName, String>*/)context.getProperty(
RendererContextConstants.FOREIGN_ATTRIBUTES);
dataObjectInfo.setResourceInfoFromForeignAttributes(foreignAttributes);
AFPDataStream afpDataStream = afpInfo.getAFPDataStream();
GraphicsObject graphicsObj = (GraphicsObject)afpDataStream.createObject(dataObjectInfo);
graphics.setGraphicsObject(graphicsObj);
try {
root.paint(graphics);
} catch (Exception e) {
log.error("SVG graphic could not be rendered: " + e.getMessage(), e);
}
graphics.dispose();
}
/** {@inheritDoc} */
public boolean supportsRenderer(Renderer renderer) {
if (renderer instanceof AFPRenderer) {
AFPRenderer afpRenderer = (AFPRenderer)renderer;
return afpRenderer.isGOCAEnabled();
}
return false;
}
/** {@inheritDoc} */
protected void updateRendererContext(RendererContext context) {
//Work around a problem in Batik: Gradients cannot be done in ColorSpace.CS_GRAY
context.setProperty(AFPRendererContextConstants.AFP_GRAYSCALE,
Boolean.FALSE);
}
}
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