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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 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);
- }
-
- }
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