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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/*
* 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.java2d;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.awt.image.WritableRaster;
import java.io.IOException;
import org.apache.xmlgraphics.image.GraphicsConstants;
import org.apache.xmlgraphics.image.loader.Image;
import org.apache.xmlgraphics.image.loader.ImageFlavor;
import org.apache.xmlgraphics.image.loader.ImageInfo;
import org.apache.xmlgraphics.image.loader.impl.ImageRendered;
import org.apache.fop.render.ImageHandler;
import org.apache.fop.render.RenderingContext;
/**
* Image handler implementation that paints {@link RenderedImage} instances on a {@link Graphics2D}
* object.
*/
public class Java2DImageHandlerRenderedImage implements ImageHandler {
/** {@inheritDoc} */
public int getPriority() {
return 300;
}
/** {@inheritDoc} */
public Class getSupportedImageClass() {
return ImageRendered.class;
}
/** {@inheritDoc} */
public ImageFlavor[] getSupportedImageFlavors() {
return new ImageFlavor[] {
ImageFlavor.BUFFERED_IMAGE,
ImageFlavor.RENDERED_IMAGE,
};
}
/** {@inheritDoc} */
public void handleImage(RenderingContext context, Image image, Rectangle pos)
throws IOException {
Java2DRenderingContext java2dContext = (Java2DRenderingContext)context;
ImageInfo info = image.getInfo();
ImageRendered imageRend = (ImageRendered)image;
Graphics2D g2d = java2dContext.getGraphics2D();
AffineTransform at = new AffineTransform();
at.translate(pos.x, pos.y);
//scaling based on layout instructions
double sx = pos.getWidth() / (double)info.getSize().getWidthMpt();
double sy = pos.getHeight() / (double)info.getSize().getHeightMpt();
//scaling because of image resolution
//float sourceResolution = java2dContext.getUserAgent().getSourceResolution();
//source resolution seems to be a bad idea, not sure why
float sourceResolution = GraphicsConstants.DEFAULT_DPI;
sourceResolution *= 1000; //we're working in the millipoint area
sx *= sourceResolution / info.getSize().getDpiHorizontal();
sy *= sourceResolution / info.getSize().getDpiVertical();
at.scale(sx, sy);
RenderedImage rend = imageRend.getRenderedImage();
if (imageRend.getTransparentColor() != null && !rend.getColorModel().hasAlpha()) {
int transCol = imageRend.getTransparentColor().getRGB();
BufferedImage bufImage = makeTransparentImage(rend);
WritableRaster alphaRaster = bufImage.getAlphaRaster();
//TODO Masked images: Does anyone know a more efficient method to do this?
final int[] transparent = new int[] {0x00};
for (int y = 0, maxy = bufImage.getHeight(); y < maxy; y++) {
for (int x = 0, maxx = bufImage.getWidth(); x < maxx; x++) {
int col = bufImage.getRGB(x, y);
if (col == transCol) {
//Mask out all pixels that match the transparent color
alphaRaster.setPixel(x, y, transparent);
}
}
}
g2d.drawRenderedImage(bufImage, at);
} else {
g2d.drawRenderedImage(rend, at);
}
}
private BufferedImage makeTransparentImage(RenderedImage src) {
BufferedImage bufImage = new BufferedImage(src.getWidth(), src.getHeight(),
BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = bufImage.createGraphics();
g2d.drawRenderedImage(src, new AffineTransform());
g2d.dispose();
return bufImage;
}
/** {@inheritDoc} */
public boolean isCompatible(RenderingContext targetContext, Image image) {
return (image == null || image instanceof ImageRendered)
&& targetContext instanceof Java2DRenderingContext;
}
}
|
