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/*
* 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.afp;
import java.awt.Point;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.util.Map;
import org.apache.fop.afp.AFPDataObjectInfo;
import org.apache.fop.afp.AFPObjectAreaInfo;
import org.apache.fop.afp.AFPPaintingState;
import org.apache.fop.afp.AFPResourceInfo;
import org.apache.fop.afp.AFPUnitConverter;
import org.apache.fop.render.ImageHandlerBase;
/**
* A base abstract AFP image handler
*/
public abstract class AFPImageHandler implements ImageHandlerBase {
private static final int X = 0;
private static final int Y = 1;
/** foreign attribute reader */
private final AFPForeignAttributeReader foreignAttributeReader
= new AFPForeignAttributeReader();
/**
* Generates an intermediate AFPDataObjectInfo that is later used to construct
* the appropriate data object in the AFP DataStream.
*
* @param rendererImageInfo the renderer image info
* @return a data object info object
* @throws IOException thrown if an I/O exception of some sort has occurred.
*/
public AFPDataObjectInfo generateDataObjectInfo(
AFPRendererImageInfo rendererImageInfo) throws IOException {
AFPDataObjectInfo dataObjectInfo = createDataObjectInfo();
// set resource information
Map foreignAttributes = rendererImageInfo.getForeignAttributes();
AFPResourceInfo resourceInfo
= foreignAttributeReader.getResourceInfo(foreignAttributes);
resourceInfo.setUri(rendererImageInfo.getURI());
dataObjectInfo.setResourceInfo(resourceInfo);
// set object area
AFPObjectAreaInfo objectAreaInfo = new AFPObjectAreaInfo();
Point origin = rendererImageInfo.getOrigin();
Rectangle2D position = rendererImageInfo.getPosition();
float srcX = origin.x + (float)position.getX();
float srcY = origin.y + (float)position.getY();
AFPRendererContext rendererContext
= (AFPRendererContext)rendererImageInfo.getRendererContext();
AFPInfo afpInfo = rendererContext.getInfo();
AFPPaintingState paintingState = afpInfo.getPaintingState();
AFPUnitConverter unitConv = paintingState.getUnitConverter();
int[] coords = unitConv.mpts2units(new float[] {srcX, srcY});
objectAreaInfo.setX(coords[X]);
objectAreaInfo.setY(coords[Y]);
int width = Math.round(unitConv.mpt2units((float)position.getWidth()));
objectAreaInfo.setWidth(width);
int height = Math.round(unitConv.mpt2units((float)position.getHeight()));
objectAreaInfo.setHeight(height);
int resolution = paintingState.getResolution();
objectAreaInfo.setHeightRes(resolution);
objectAreaInfo.setWidthRes(resolution);
objectAreaInfo.setRotation(paintingState.getRotation());
dataObjectInfo.setObjectAreaInfo(objectAreaInfo);
return dataObjectInfo;
}
/**
* Creates the data object information object
*
* @return the data object information object
*/
protected abstract AFPDataObjectInfo createDataObjectInfo();
}
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