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/*
* Copyright 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.image;
// AWT
import java.awt.Color;
import java.awt.image.ColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.BufferedImage;
// ImageIO
import javax.imageio.ImageIO;
import org.apache.commons.io.IOUtils;
/**
* FopImage object using ImageIO.
* @see AbstractFopImage
* @see FopImage
*/
public class ImageIOImage extends AbstractFopImage {
/**
* Creates a new ImageIOImage.
* @param info the image info from the ImageReader
*/
public ImageIOImage(FopImage.ImageInfo info) {
super(info);
}
/**
* @see org.apache.fop.image.AbstractFopImage#loadDimensions()
*/
protected boolean loadDimensions() {
if (this.bitmaps == null) {
return loadBitmap();
}
return true;
}
/** @see org.apache.fop.image.AbstractFopImage#loadBitmap() */
protected boolean loadBitmap() {
try {
inputStream.reset();
BufferedImage imageData = ImageIO.read(inputStream);
this.height = imageData.getHeight();
this.width = imageData.getWidth();
ColorModel cm = imageData.getColorModel();
this.bitsPerPixel = cm.getComponentSize(0); //only use first, we assume all are equal
this.colorSpace = cm.getColorSpace();
int[] tmpMap = imageData.getRGB(0, 0, this.width,
this.height, null, 0, this.width);
if (cm.hasAlpha()) {
// java.awt.Transparency. BITMASK or OPAQUE or TRANSLUCENT
int transparencyType = cm.getTransparency();
if (transparencyType == java.awt.Transparency.OPAQUE) {
this.isTransparent = false;
} else if (transparencyType == java.awt.Transparency.BITMASK) {
if (cm instanceof IndexColorModel) {
this.isTransparent = false;
byte[] alphas = new byte[
((IndexColorModel) cm).getMapSize()];
byte[] reds = new byte[
((IndexColorModel) cm).getMapSize()];
byte[] greens = new byte[
((IndexColorModel) cm).getMapSize()];
byte[] blues = new byte[
((IndexColorModel) cm).getMapSize()];
((IndexColorModel) cm).getAlphas(alphas);
((IndexColorModel) cm).getReds(reds);
((IndexColorModel) cm).getGreens(greens);
((IndexColorModel) cm).getBlues(blues);
for (int i = 0;
i < ((IndexColorModel) cm).getMapSize();
i++) {
if ((alphas[i] & 0xFF) == 0) {
this.isTransparent = true;
this.transparentColor = new Color(
(int)(reds[i] & 0xFF),
(int)(greens[i] & 0xFF),
(int)(blues[i] & 0xFF));
break;
}
}
} else {
// TRANSLUCENT
/*
* this.isTransparent = false;
* for (int i = 0; i < this.width * this.height; i++) {
* if (cm.getAlpha(tmpMap[i]) == 0) {
* this.isTransparent = true;
* this.transparentColor = new PDFColor(cm.getRed(tmpMap[i]),
* cm.getGreen(tmpMap[i]), cm.getBlue(tmpMap[i]));
* break;
* }
* }
* // or use special API...
*/
this.isTransparent = false;
}
} else {
this.isTransparent = false;
}
} else {
this.isTransparent = false;
}
// Should take care of the ColorSpace and bitsPerPixel
this.bitmaps = new byte[this.width * this.height * 3];
for (int i = 0; i < this.height; i++) {
for (int j = 0; j < this.width; j++) {
int p = tmpMap[i * this.width + j];
int r = (p >> 16) & 0xFF;
int g = (p >> 8) & 0xFF;
int b = (p) & 0xFF;
this.bitmaps[3 * (i * this.width + j)]
= (byte)(r & 0xFF);
this.bitmaps[3 * (i * this.width + j) + 1]
= (byte)(g & 0xFF);
this.bitmaps[3 * (i * this.width + j) + 2]
= (byte)(b & 0xFF);
}
}
} catch (Exception ex) {
log.error("Error while loading image: " + ex.getMessage(), ex);
return false;
} finally {
IOUtils.closeQuietly(inputStream);
inputStream = null;
}
return true;
}
}
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