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

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/*
 * 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 de.intarsys.pdf.cos.COSName;
import de.intarsys.pdf.cos.COSObject;

import java.io.ByteArrayInputStream;

/**
 * A CID indexed font.
 * 
 * This is a wrapper around a Type 1 or TrueType Font that is indexed using
 * CID's.
 * 
 * This is a a subclass of PDFont only for implementation reasons.
 */
public abstract class CIDFont extends PDFont {
    /**
     * The meta class implementation
     */
    public static class MetaClass extends PDFont.MetaClass {
        protected MetaClass(Class instanceClass) {
            super(instanceClass);
        }
    }

    public static final COSName DK_CIDSystemInfo = COSName.constant("CIDSystemInfo"); //$NON-NLS-1$

    public static final COSName DK_DW = COSName.constant("DW"); //$NON-NLS-1$

    public static final COSName DK_W = COSName.constant("W"); //$NON-NLS-1$

    public static final COSName DK_DW2 = COSName.constant("DW2"); //$NON-NLS-1$

    public static final COSName DK_W2 = COSName.constant("W2"); //$NON-NLS-1$

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

    private CIDWidthMap map = null;

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

    public CIDSystemInfo getCIDSystemInfo() {
        return (CIDSystemInfo) CIDSystemInfo.META.createFromCos(cosGetField(DK_CIDSystemInfo));
    }

    public CIDWidthMap getCIDWidthMap() {
        if (map == null) {
            map = (CIDWidthMap) CIDWidthMap.META.createFromCos(cosGetField(DK_W));
        }
        return map;
    }

    public int getDefaultGlyphWidth() {
        return getFieldInt(DK_DW, 1000);
    }

    /*
     * (non-Javadoc)
     *
     * @see de.intarsys.font.IFont#getFontStyle()
     */
    @Override
    public PDFontStyle getFontStyle() {
        return PDFontStyle.REGULAR;
    }

    public abstract int getGlyphIndex(int cid);

    @Override
    public PDGlyphs getGlyphsEncoded(int codepoint) {
        throw new UnsupportedOperationException("CIDFont can not be used directly");
    }

    public int getGlyphWidthCID(int cid) {
        CIDWidthMap map = getCIDWidthMap();
        if (map == null) {
            return getFieldInt(DK_DW, 1000);
        }
        int width = getCIDWidthMap().getWidth(cid);
        if (width == -1) {
            return getFieldInt(DK_DW, 1000);
        }
        return width;
    }

    @Override
    public int getGlyphWidthEncoded(int codepoint) {
        throw new UnsupportedOperationException("CIDFont can not be used directly");
    }

    @Override
    public PDGlyphs getNextGlyphsEncoded(ByteArrayInputStream is) {
        throw new UnsupportedOperationException("CIDFont can not be used directly");
    }

    public void setCIDSystemInfo(CIDSystemInfo info) {
        setFieldObject(DK_CIDSystemInfo, info);
    }

    public void setCIDWidthMap(CIDWidthMap map) {
        setFieldObject(DK_W, map);
    }

    public void setDefaultGlyphWidth(int value) {
        setFieldInt(DK_DW, value);
    }
}