| /* |
| * 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 Presentation Text Descriptor specifies the units of measure for the |
| * Presentation Text object space, the size of the Presentation Text object |
| * space, and the initial values for modal parameters, called initial text |
| * conditions. Initial values not provided are defaulted by the controlling |
| * environment or the receiving device. |
| * |
| * The Presentation Text Descriptor provides the following initial values: |
| * - Unit base |
| * - Xp-units per unit base |
| * - Yp-units per unit base |
| * - Xp-extent of the presentation space |
| * - Yp-extent of the presentation space |
| * - Initial text conditions. |
| * |
| * The initial text conditions are values provided by the Presentation Text |
| * Descriptor to initialize the modal parameters of the control sequences. |
| * Modal control sequences typically are characterized by the word set in |
| * the name of the control sequence. Modal parameters are identified as such |
| * in their semantic descriptions. |
| * |
| */ |
| public class PresentationTextDescriptor extends AbstractDescriptor { |
| |
| /** |
| * Constructor a PresentationTextDescriptor for the specified |
| * width and height. |
| * |
| * @param width The width of the page. |
| * @param height The height of the page. |
| * @param widthRes The width resolution of the page. |
| * @param heightRes The height resolution of the page. |
| */ |
| public PresentationTextDescriptor(int width, int height, |
| int widthRes, int heightRes) { |
| super(width, height, widthRes, heightRes); |
| } |
| |
| /** {@inheritDoc} */ |
| public void writeToStream(OutputStream os) throws IOException { |
| byte[] data = new byte[23]; |
| |
| copySF(data, Type.MIGRATION, Category.PRESENTATION_TEXT); |
| |
| data[1] = 0x00; // length |
| data[2] = 0x16; |
| |
| data[9] = 0x00; |
| data[10] = 0x00; |
| |
| byte[] xdpi = BinaryUtils.convert(widthRes * 10, 2); |
| data[11] = xdpi[0]; // xdpi |
| data[12] = xdpi[1]; |
| |
| byte[] ydpi = BinaryUtils.convert(heightRes * 10, 2); |
| data[13] = ydpi[0]; // ydpi |
| data[14] = ydpi[1]; |
| |
| byte[] x = BinaryUtils.convert(width, 3); |
| data[15] = x[0]; |
| data[16] = x[1]; |
| data[17] = x[2]; |
| |
| byte[] y = BinaryUtils.convert(height, 3); |
| data[18] = y[0]; |
| data[19] = y[1]; |
| data[20] = y[2]; |
| |
| data[21] = 0x00; |
| data[22] = 0x00; |
| |
| os.write(data); |
| } |
| |
| } |