fop/src/java/org/apache/fop/pdf/PDFFontType3.java

/*
 * Copyright 1999-2004 The Apache Software Foundation.
 * 
 * Licensed 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.pdf;

import org.apache.fop.fonts.FontType;

/**
 * Class representing a Type3 font.
 * <p>
 * <b>CAUTION: this is not yet fully implemented!!!!!!!</b>
 * the /CharProcs is still missing its <code>toPDF()</code> method.
 * <p>
 * Type3 fonts are specified on page 206 and onwards of the PDF 1.3 spec.
 */
public class PDFFontType3 extends PDFFontNonBase14 {

    /**
     * font's required /FontBBox bounding box
     */
    protected PDFRectangle fontBBox;

    /**
     * font's required /FontMatrix array
     */
    protected PDFArray fontMatrix;

    /**
     * font's required /CharProcs dictionary
     */
    protected PDFCharProcs charProcs;

    /**
     * font's optional /Resources object
     */
    protected PDFResources resources;

    /**
     * Create the /Font object
     *
     * @param fontname the internal name for the font
     * @param basefont the base font name
     * @param encoding the character encoding schema used by the font
     */
    public PDFFontType3(String fontname, 
                        String basefont,
                        Object encoding) {

        /* generic creation of PDF object */
        super(fontname, FontType.TYPE3, basefont, encoding /* , mapping */);

        this.fontBBox = null;
        this.fontMatrix = null;
        this.charProcs = null;
    }

    /**
     * Create the /Font object
     *
     * @param fontname the internal name for the font
     * @param basefont the base font name
     * @param encoding the character encoding schema used by the font
     * @param fontBBox the font's bounding box
     * @param fontMatrix the font's transformation matrix
     * @param charProcs the glyphs' definitions
     */
    public PDFFontType3(String fontname, 
                        String basefont,
                        Object encoding,
                        PDFRectangle fontBBox, PDFArray fontMatrix,
                        PDFCharProcs charProcs) {

        /* generic creation of PDF object */
        super(fontname, FontType.TYPE3, basefont, encoding /* , mapping */);

        this.fontBBox = fontBBox;
        this.fontMatrix = fontMatrix;
        this.charProcs = charProcs;
    }

    /**
     * Set the font's bounding box
     *
     * @param bbox bounding box for the font
     */
    public void setFontBBox(PDFRectangle bbox) {
        this.fontBBox = bbox;
    }

    /**
     * Set the font's transformation matrix
     *
     * @param matrix the transformation matrix for the font
     */
    public void setFontMatrix(PDFArray matrix) {
        this.fontMatrix = matrix;
    }

    /**
     * Set the glyphs' definitions.
     * <p>
     * The /CharProcs object needs to be registered in the document's resources.
     *
     * @param chars the glyphs' dictionary
     */
    public void setCharProcs(PDFCharProcs chars) {
        this.charProcs = chars;
    }

    /**
     * @see org.apache.fop.pdf.PDFFont#fillInPDF(StringBuffer)
     */
    protected void fillInPDF(StringBuffer target) {
        if (fontBBox != null) {
            target.append("\n/FontBBox ");
            target.append(fontBBox.toPDF());
        }
        if (fontMatrix != null) {
            target.append("\n/FontMatrix ");
            target.append(fontMatrix.toPDF());
        }
        if (charProcs != null) {
            target.append("\n/CharProcs ");
            target.append(charProcs.referencePDF());
        }
    }

}