de.intarsys.pdf.font.CIDWidthMap Maven / Gradle / Ivy

Go to download
/*
 * Copyright (c) 2007, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package de.intarsys.pdf.font;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import de.intarsys.pdf.cos.COSArray;
import de.intarsys.pdf.cos.COSBasedObject;
import de.intarsys.pdf.cos.COSInteger;
import de.intarsys.pdf.cos.COSNumber;
import de.intarsys.pdf.cos.COSObject;

/**
 * 
 */
public class CIDWidthMap extends COSBasedObject {

	/**
	 * The meta class implementation
	 */
	public static class MetaClass extends COSBasedObject.MetaClass {
		protected MetaClass(Class instanceClass) {
			super(instanceClass);
		}

		@Override
		protected COSBasedObject doCreateCOSBasedObject(COSObject object) {
			return new CIDWidthMap(object);
		}

		@Override
		protected COSObject doCreateCOSObject() {
			return COSArray.create();
		}
	}

	/** The meta class instance */
	public static final MetaClass META = new MetaClass(MetaClass.class
			.getDeclaringClass());

	private List entries;

	protected CIDWidthMap(COSObject object) {
		super(object);
	}

	public void addWidth(int cid, int width) {
		entries.add(new CIDWidthMapEntry(cid, cid, width));
		cosGetArray().add(COSInteger.create(cid));
		cosGetArray().add(COSInteger.create(cid));
		cosGetArray().add(COSInteger.create(width));
	}

	protected void createMap(COSArray array) {
		entries = new ArrayList();
		if (array != null) {
			for (Iterator itMap = array.iterator(); itMap.hasNext();) {
				COSNumber element1 = ((COSObject) itMap.next()).asNumber();
				if (element1 == null || !itMap.hasNext()) {
					break;
				}
				COSObject element2 = (COSObject) itMap.next();
				int start = element1.intValue();
				int stop = start;
				if (element2 instanceof COSNumber) {
					stop = ((COSNumber) element2).intValue();
					if (!itMap.hasNext()) {
						break;
					}
					COSObject element3 = (COSObject) itMap.next();
					int width = ((COSNumber) element3).intValue();
					entries.add(new CIDWidthMapEntry(start, stop, width));
				} else if (element2 instanceof COSArray) {
					COSArray widths = (COSArray) element2;
					for (Iterator itWidths = widths.iterator(); itWidths
							.hasNext();) {
						COSNumber widthObject = ((COSObject) itWidths.next())
								.asNumber();
						int width = 0;
						if (widthObject != null) {
							width = widthObject.intValue();
						}
						entries.add(new CIDWidthMapEntry(start, stop, width));
						start++;
						stop++;
					}
				}
			}
		}
	}

	public int getWidth(int cid) {
		for (Iterator it = entries.iterator(); it.hasNext();) {
			CIDWidthMapEntry entry = (CIDWidthMapEntry) it.next();
			if (entry.getStart() <= cid) {
				if (entry.getStop() >= cid) {
					return entry.getWidth();
				}
			}
		}
		return -1;
	}

	@Override
	protected void initializeFromCos() {
		super.initializeFromCos();
		createMap(cosGetArray());
	}

	@Override
	protected void initializeFromScratch() {
		super.initializeFromScratch();
		entries = new ArrayList();
	}

}