org.apache.fop.render.pdf.PDFImageHandlerGraphics2D Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of fop Show documentation
Show all versions of fop Show documentation
Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF.
/*
* 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: PDFImageHandlerGraphics2D.java 830293 2009-10-27 19:07:52Z vhennebert $ */
package org.apache.fop.render.pdf;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import org.apache.xmlgraphics.image.loader.Image;
import org.apache.xmlgraphics.image.loader.ImageFlavor;
import org.apache.xmlgraphics.image.loader.impl.ImageGraphics2D;
import org.apache.fop.pdf.PDFXObject;
import org.apache.fop.render.AbstractImageHandlerGraphics2D;
import org.apache.fop.render.RendererContext;
import org.apache.fop.render.RenderingContext;
import org.apache.fop.render.pdf.PDFLogicalStructureHandler.MarkedContentInfo;
import org.apache.fop.svg.PDFGraphics2D;
/**
* PDFImageHandler implementation which handles Graphics2D images.
*/
public class PDFImageHandlerGraphics2D extends AbstractImageHandlerGraphics2D
implements PDFImageHandler {
private static final ImageFlavor[] FLAVORS = new ImageFlavor[] {
ImageFlavor.GRAPHICS2D,
};
/** {@inheritDoc} */
public PDFXObject generateImage(RendererContext context, Image image,
Point origin, Rectangle pos)
throws IOException {
PDFRenderer renderer = (PDFRenderer)context.getRenderer();
/*
ImageGraphics2D imageG2D = (ImageGraphics2D)image;
renderer.getGraphics2DAdapter().paintImage(imageG2D.getGraphics2DImagePainter(),
context, origin.x + pos.x, origin.y + pos.y, pos.width, pos.height);
*/
PDFRenderingContext pdfContext = new PDFRenderingContext(
context.getUserAgent(),
renderer.getGenerator(),
renderer.currentPage,
renderer.getFontInfo());
Rectangle effPos = new Rectangle(origin.x + pos.x, origin.y + pos.y, pos.width, pos.height);
if (context.getUserAgent().isAccessibilityEnabled()) {
pdfContext.setMarkedContentInfo(renderer.addCurrentImageToStructureTree());
}
handleImage(pdfContext, image, effPos);
return null;
}
/** {@inheritDoc} */
public void handleImage(RenderingContext context, Image image, Rectangle pos)
throws IOException {
PDFRenderingContext pdfContext = (PDFRenderingContext)context;
PDFContentGenerator generator = pdfContext.getGenerator();
ImageGraphics2D imageG2D = (ImageGraphics2D)image;
float fwidth = pos.width / 1000f;
float fheight = pos.height / 1000f;
float fx = pos.x / 1000f;
float fy = pos.y / 1000f;
// get the 'width' and 'height' attributes of the SVG document
Dimension dim = image.getInfo().getSize().getDimensionMpt();
float imw = (float)dim.getWidth() / 1000f;
float imh = (float)dim.getHeight() / 1000f;
float sx = fwidth / (float)imw;
float sy = fheight / (float)imh;
generator.comment("G2D start");
boolean accessibilityEnabled = context.getUserAgent().isAccessibilityEnabled();
if (accessibilityEnabled) {
MarkedContentInfo mci = pdfContext.getMarkedContentInfo();
generator.saveGraphicsState(mci.tag, mci.mcid);
} else {
generator.saveGraphicsState();
}
generator.updateColor(Color.black, false, null);
generator.updateColor(Color.black, true, null);
//TODO Clip to the image area.
// 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.
generator.add(sx + " 0 0 " + sy + " " + fx + " " + fy + " cm\n");
final boolean textAsShapes = false;
PDFGraphics2D graphics = new PDFGraphics2D(textAsShapes,
pdfContext.getFontInfo(), generator.getDocument(),
generator.getResourceContext(), pdfContext.getPage().referencePDF(),
"", 0.0f);
graphics.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext());
AffineTransform transform = new AffineTransform();
transform.translate(fx, fy);
generator.getState().concatenate(transform);
graphics.setPaintingState(generator.getState());
graphics.setOutputStream(generator.getOutputStream());
Rectangle2D area = new Rectangle2D.Double(0.0, 0.0, imw, imh);
imageG2D.getGraphics2DImagePainter().paint(graphics, area);
generator.add(graphics.getString());
if (accessibilityEnabled) {
generator.restoreGraphicsStateAccess();
} else {
generator.restoreGraphicsState();
}
generator.comment("G2D end");
}
/** {@inheritDoc} */
public int getPriority() {
return 200;
}
/** {@inheritDoc} */
public Class getSupportedImageClass() {
return ImageGraphics2D.class;
}
/** {@inheritDoc} */
public ImageFlavor[] getSupportedImageFlavors() {
return FLAVORS;
}
/** {@inheritDoc} */
public boolean isCompatible(RenderingContext targetContext, Image image) {
return (image == null || image instanceof ImageGraphics2D)
&& targetContext instanceof PDFRenderingContext;
}
}