/*
* #%L
* BroadleafCommerce Open Admin Platform
* %%
* Copyright (C) 2009 - 2013 Broadleaf Commerce
* %%
* 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.
* #L%
*/
package org.broadleafcommerce.openadmin.server.service.artifact.image.effects.chain.filter;
import org.broadleafcommerce.openadmin.server.service.artifact.image.Operation;
import org.broadleafcommerce.openadmin.server.service.artifact.image.effects.chain.UnmarshalledParameter;
import org.broadleafcommerce.openadmin.server.service.artifact.image.effects.chain.conversion.ParameterTypeEnum;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.awt.image.ColorModel;
import java.awt.image.IndexColorModel;
import java.io.InputStream;
import java.util.Map;
public class Rotate extends BaseFilter {
private RenderingHints hints;
private double amount;
public Rotate() {
//do nothing
}
public Rotate(double amount, RenderingHints hints) {
this.hints = hints;
this.amount = amount;
}
@Override
public Operation buildOperation(Map<String, String> parameterMap, InputStream artifactStream, String mimeType) {
String key = FilterTypeEnum.ROTATE.toString().toLowerCase();
if (!containsMyFilterParams(key, parameterMap)) {
return null;
}
Operation operation = new Operation();
operation.setName(key);
String factor = parameterMap.get(key + "-factor");
operation.setFactor(factor==null?null:Double.valueOf(factor));
UnmarshalledParameter rotate = new UnmarshalledParameter();
String rotateApplyFactor = parameterMap.get(key + "-rotate-apply-factor");
rotate.setApplyFactor(rotateApplyFactor == null ? false : Boolean.valueOf(rotateApplyFactor));
rotate.setName("rotate");
rotate.setType(ParameterTypeEnum.DOUBLE.toString());
rotate.setValue(parameterMap.get(key + "-rotate-amount"));
operation.setParameters(new UnmarshalledParameter[]{rotate});
return operation;
}
/* (non-Javadoc)
* @see java.awt.image.BufferedImageOp#filter(java.awt.image.BufferedImage, java.awt.image.BufferedImage)
*/
public BufferedImage filter(BufferedImage src, BufferedImage dst) {
if (src == null) {
throw new NullPointerException("src image is null");
}
if (src == dst) {
throw new IllegalArgumentException("src image cannot be the "+
"same as the dst image");
}
boolean needToConvert = false;
ColorModel srcCM = src.getColorModel();
ColorModel dstCM;
BufferedImage origDst = dst;
if (srcCM instanceof IndexColorModel) {
IndexColorModel icm = (IndexColorModel) srcCM;
src = icm.convertToIntDiscrete(src.getRaster(), false);
srcCM = src.getColorModel();
}
int neww;
int newh;
int w = src.getWidth();
int h = src.getHeight();
if (dst == null) {
double sin = Math.abs(Math.sin(Math.toRadians(amount))), cos = Math.abs(Math.cos(Math.toRadians(amount)));
neww = (int)Math.floor(w*cos+h*sin);
newh = (int)Math.floor(h*cos+w*sin);
dst = createCompatibleDestImage(src, null, neww, newh);
dstCM = srcCM;
origDst = dst;
} else {
dstCM = dst.getColorModel();
if (srcCM.getColorSpace().getType() !=
dstCM.getColorSpace().getType())
{
needToConvert = true;
dst = createCompatibleDestImage(src, null);
dstCM = dst.getColorModel();
}
else if (dstCM instanceof IndexColorModel) {
dst = createCompatibleDestImage(src, null);
dstCM = dst.getColorModel();
}
neww = dst.getWidth();
newh = dst.getHeight();
}
Graphics2D g = dst.createGraphics();
g.translate((neww-w)/2, (newh-h)/2);
g.rotate(Math.toRadians(amount), w/2, h/2);
g.drawRenderedImage(src, null);
g.dispose();
origDst = dst;
if (needToConvert) {
ColorConvertOp ccop = new ColorConvertOp(hints);
ccop.filter(dst, origDst);
}
else if (origDst != dst) {
Graphics2D g2 = origDst.createGraphics();
try {
g2.drawImage(dst, 0, 0, null);
} finally {
g2.dispose();
}
}
return origDst;
}
}