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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.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 = (int) Math.ceil(unitConv.mpt2units(targetRect.width));
- int height = (int) Math.ceil(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();
- }
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