corner.orm.tapestry.pdf.components.AbstractColumnText.java Source code

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Here is the source code for corner.orm.tapestry.pdf.components.AbstractColumnText.java

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// Copyright 2007 the original author or authors.
// site: http://www.bjmaxinfo.com
// file: $Id: AbstractColumnText.java 3919 2008-01-16 04:36:52Z xf $
// created at:2007-07-31
//
// 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.

package corner.orm.tapestry.pdf.components;

import org.apache.hivemind.util.Defense;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.pdf.ColumnText;

import corner.orm.tapestry.pdf.PdfSystemException;
import corner.orm.tapestry.pdf.PdfWriterDelegate;

/**
 * ColumnText.
 * 
 * @author <a href="mailto:jun.tsai@bjmaxinfo.com">Jun Tsai</a>
 * @author <a href=mailto:Ghostbb@bjmaxinfo.com>Ghostbb</a>
 * @version $Revision: 3919 $
 * @since 2.3.7
 */
public abstract class AbstractColumnText extends AbstractPdfComponent {

    /**
     * @see corner.orm.tapestry.pdf.components.AbstractPdfComponent#renderPdf(corner.orm.tapestry.pdf.PdfWriterDelegate, com.lowagie.text.Document)
     */
    @Override
    public void renderPdf(PdfWriterDelegate writer, Document doc) {
        Defense.notNull(getRectangle(), "?");
        ColumnText ct = new ColumnText(writer.getPdfWriter().getDirectContent());
        String[] p = getRectangle().split(",");
        ct.setSimpleColumn(Float.valueOf(p[0]), Float.valueOf(p[1]), Float.valueOf(p[2]), Float.valueOf(p[3]));
        //      System.out.println("ColumnText??:"+getRectangle());
        setCurrentColumnTextWidth(Float.valueOf(p[2]) - Float.valueOf(p[0]));
        setColumnTextStartHeight(Float.valueOf(Float.valueOf(p[3])));
        renderColumnText(ct, writer, doc);
        go(ct);
    }

    /**
     * ColumnText?
     * 
     * @param ct            ColumnText
     * @param writer       pdf writer
     * @param doc          document
     */
    protected abstract void renderColumnText(ColumnText ct, PdfWriterDelegate writer, Document doc);

    /**
     * 
     * 
     * @param ct    ColumnText 
     */
    protected void go(ColumnText ct) {
        try {
            ct.go();
        } catch (DocumentException e) {
            throw new PdfSystemException(e);
        }
    }

    public abstract float getCurrentColumnTextWidth();

    public abstract void setCurrentColumnTextWidth(float width);

    public abstract float getColumnTextStartHeight();

    public abstract void setColumnTextStartHeight(float height);
}