1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* 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.pdf;
import java.awt.Rectangle;
import java.io.IOException;
import org.apache.xmlgraphics.image.loader.Image;
import org.apache.fop.pdf.PDFImage;
import org.apache.fop.pdf.PDFXObject;
import org.apache.fop.render.ImageHandler;
import org.apache.fop.render.RenderingContext;
import org.apache.fop.render.pdf.PDFLogicalStructureHandler.MarkedContentInfo;
/**
* A partial implementation of a PDF-specific image handler, containing the code that is
* common between image flavors.
*/
abstract class AbstractPDFImageHandler implements ImageHandler {
/** {@inheritDoc} */
public void handleImage(RenderingContext context, Image image, Rectangle pos)
throws IOException {
assert context instanceof PDFRenderingContext;
PDFRenderingContext pdfContext = (PDFRenderingContext)context;
PDFContentGenerator generator = pdfContext.getGenerator();
PDFImage pdfimage = createPDFImage(image, image.getInfo().getOriginalURI());
PDFXObject xobj = generator.getDocument().addImage(
generator.getResourceContext(), pdfimage);
float x = (float)pos.getX() / 1000f;
float y = (float)pos.getY() / 1000f;
float w = (float)pos.getWidth() / 1000f;
float h = (float)pos.getHeight() / 1000f;
if (context.getUserAgent().isAccessibilityEnabled()) {
MarkedContentInfo mci = pdfContext.getMarkedContentInfo();
generator.placeImage(x, y, w, h, xobj, mci.tag, mci.mcid);
} else {
generator.placeImage(x, y, w, h, xobj);
}
}
/**
* Creates a PDF image object out of the given image.
*
* @param image an image
* @param xobjectKey a key for retrieval of the image from the document's XObject collection
* @return a suitable {@link PDFImage} implementation that can handle the flavour of
* the given image
*/
abstract PDFImage createPDFImage(Image image, String xobjectKey);
}
|
