| /* |
| * 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.Rectangle; |
| 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; |
| import org.apache.fop.render.RendererContext; |
| |
| /** |
| * 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 static final AFPForeignAttributeReader FOREIGN_ATTRIBUTE_READER |
| = 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 |
| dataObjectInfo.setResourceInfo(createResourceInformation( |
| rendererImageInfo.getURI(), |
| rendererImageInfo.getForeignAttributes())); |
| |
| |
| Point origin = rendererImageInfo.getOrigin(); |
| Rectangle2D position = rendererImageInfo.getPosition(); |
| int srcX = Math.round(origin.x + (float)position.getX()); |
| int srcY = Math.round(origin.y + (float)position.getY()); |
| Rectangle targetRect = new Rectangle( |
| srcX, |
| srcY, |
| (int)Math.round(position.getWidth()), |
| (int)Math.round(position.getHeight())); |
| |
| RendererContext context = rendererImageInfo.getRendererContext(); |
| assert (context instanceof AFPRendererContext); |
| AFPRendererContext rendererContext = (AFPRendererContext) context; |
| AFPInfo afpInfo = rendererContext.getInfo(); |
| AFPPaintingState paintingState = afpInfo.getPaintingState(); |
| |
| dataObjectInfo.setObjectAreaInfo(createObjectAreaInfo(paintingState, targetRect)); |
| |
| return dataObjectInfo; |
| } |
| |
| /** |
| * Sets resource information on the data object info. |
| * @param uri the image's URI (or null if no URI is available) |
| * @param foreignAttributes a Map of foreign attributes (or null) |
| * @return the resource information object |
| */ |
| public static AFPResourceInfo createResourceInformation( |
| String uri, Map foreignAttributes) { |
| AFPResourceInfo resourceInfo |
| = FOREIGN_ATTRIBUTE_READER.getResourceInfo(foreignAttributes); |
| resourceInfo.setUri(uri); |
| |
| return resourceInfo; |
| } |
| |
| /** |
| * Creates and returns an {@link AFPObjectAreaInfo} instance for the placement of the image. |
| * @param paintingState the painting state |
| * @param targetRect the target rectangle in which to place the image (coordinates in mpt) |
| * @return the newly created object area info instance |
| */ |
| public static AFPObjectAreaInfo createObjectAreaInfo(AFPPaintingState paintingState, |
| Rectangle targetRect) { |
| AFPUnitConverter unitConv = paintingState.getUnitConverter(); |
| |
| int[] coords = unitConv.mpts2units(new float[] {targetRect.x, targetRect.y}); |
| |
| int width = Math.round(unitConv.mpt2units(targetRect.width)); |
| |
| int height = Math.round(unitConv.mpt2units(targetRect.height)); |
| |
| int resolution = paintingState.getResolution(); |
| AFPObjectAreaInfo objectAreaInfo = new AFPObjectAreaInfo(coords[X], coords[Y], width, |
| height, resolution, paintingState.getRotation()); |
| return objectAreaInfo; |
| } |
| |
| /** |
| * Creates the data object information object |
| * |
| * @return the data object information object |
| */ |
| protected abstract AFPDataObjectInfo createDataObjectInfo(); |
| } |