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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.afp.modca;
-
- import java.io.IOException;
- import java.io.OutputStream;
-
- import org.apache.fop.afp.util.BinaryUtils;
-
- /**
- *
- * The Include Page Overlay structured field references an overlay resource
- * definition that is to be positioned on the page. A page overlay can be
- * referenced at any time during the page state, but not during an object state.
- * The overlay contains its own active environment group definition.
- *
- * Note: There is no need for the triplets, so I have ignored them.
- *
- * A real example of where this will be used is for static overlays, such as an
- * address on the page.
- *
- */
- public class IncludePageOverlay extends AbstractNamedAFPObject {
-
- /**
- * The x coordinate
- */
- private int x;
-
- /**
- * The y coordinate
- */
- private int y;
-
- /**
- * The orientation
- */
- private int orientation;
-
- /**
- * Constructor for the Include Page Overlay
- *
- * @param overlayName Name of the page segment
- * @param x The x position
- * @param y The y position
- * @param orientation The orientation
- */
- public IncludePageOverlay(String overlayName, int x, int y, int orientation) {
- super(overlayName);
-
- this.x = x;
- this.y = y;
- setOrientation(orientation);
- }
-
- /**
- * Sets the orientation to use for the overlay.
- *
- * @param orientation
- * The orientation (0,90, 180, 270)
- */
- public void setOrientation(int orientation) {
- if (orientation == 0 || orientation == 90 || orientation == 180
- || orientation == 270) {
- this.orientation = orientation;
- } else {
- throw new IllegalArgumentException(
- "The orientation must be one of the values 0, 90, 180, 270");
- }
- }
-
- /** {@inheritDoc} */
- public void writeToStream(OutputStream os) throws IOException {
- byte[] data = new byte[25]; //(9 +16)
- copySF(data, Type.INCLUDE, Category.PAGE_OVERLAY);
-
- // Set the total record length
- byte[] len = BinaryUtils.convert(24, 2); //Ignore first byte
- data[1] = len[0];
- data[2] = len[1];
-
- byte[] xPos = BinaryUtils.convert(x, 3);
- data[17] = xPos[0]; // x coordinate
- data[18] = xPos[1];
- data[19] = xPos[2];
-
- byte[] yPos = BinaryUtils.convert(y, 3);
- data[20] = yPos[0]; // y coordinate
- data[21] = yPos[1];
- data[22] = yPos[2];
-
- switch (orientation) {
- case 90:
- data[23] = 0x2D;
- data[24] = 0x00;
- break;
- case 180:
- data[23] = 0x5A;
- data[24] = 0x00;
- break;
- case 270:
- data[23] = (byte) 0x87;
- data[24] = 0x00;
- break;
- default:
- data[23] = 0x00;
- data[24] = 0x00;
- break;
- }
- os.write(data);
- }
- }
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