org.apache.poi.hssf.usermodel.examples.OfficeDrawingWithGraphics Maven / Gradle / Ivy

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   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
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   (the "License"); you may not use this file except in compliance with
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       http://www.apache.org/licenses/LICENSE-2.0

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package org.apache.poi.hssf.usermodel.examples;

import org.apache.poi.hssf.usermodel.*;

import java.awt.*;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * Demonstrates the use of the EscherGraphics2d library.
 *
 * @author Glen Stampoultzis (glens at apache.org)
 */
public class OfficeDrawingWithGraphics {
    public static void main( String[] args ) throws IOException {
        // Create a workbook with one sheet and size the first three somewhat
        // larger so we can fit the chemical structure diagram in.
        HSSFWorkbook wb = new HSSFWorkbook();
        HSSFSheet sheet = wb.createSheet( "my drawing" );
        sheet.setColumnWidth(1, 256 * 27);
        HSSFRow row1 = sheet.createRow(0);
        row1.setHeightInPoints(10 * 15);
        HSSFRow row2 = sheet.createRow(1);
        row2.setHeightInPoints(5 * 15);
        HSSFRow row3 = sheet.createRow(2);
        row3.setHeightInPoints(10 * 15);

        // Add some cells so we can test that the anchoring works when we
        // sort them.
        row1.createCell(0).setCellValue("C");
        row2.createCell(0).setCellValue("A");
        row3.createCell(0).setCellValue("B");

        // Create the top level drawing patriarch.
        HSSFPatriarch patriarch = sheet.createDrawingPatriarch();

        HSSFClientAnchor a;
        HSSFShapeGroup group;
        EscherGraphics g;
        EscherGraphics2d g2d;
        // Anchor entirely within one cell.
        a = new HSSFClientAnchor( 0, 0, 1023, 255, (short) 1, 0, (short) 1, 0 );
        group = patriarch.createGroup( a );
        group.setCoordinates( 0, 0, 320, 276 );
        float verticalPointsPerPixel = a.getAnchorHeightInPoints(sheet) / Math.abs(group.getY2() - group.getY1());
        g = new EscherGraphics( group, wb, Color.black, verticalPointsPerPixel );
        g2d = new EscherGraphics2d( g );
        drawStar( g2d );

        a = new HSSFClientAnchor( 0, 0, 1023, 255, (short) 1, 1, (short) 1, 1 );
        group = patriarch.createGroup( a );
        group.setCoordinates( 0, 0, 640, 276 );
        verticalPointsPerPixel = a.getAnchorHeightInPoints(sheet) / Math.abs(group.getY2() - group.getY1());
//        verticalPixelsPerPoint = (float)Math.abs(group.getY2() - group.getY1()) / a.getAnchorHeightInPoints(sheet);
        g = new EscherGraphics( group, wb, Color.black, verticalPointsPerPixel );
        g2d = new EscherGraphics2d( g );
        drawStar( g2d );

        FileOutputStream out = new FileOutputStream("workbook.xls");
        wb.write(out);
        out.close();

    }

    private static void drawStar( EscherGraphics2d g2d )
    {
        g2d.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON );
        for (double i = 0; i < Math.PI; i += 0.1)
        {
            g2d.setColor( new Color((int)(i * 5343062d) ) );
            int x1 = (int) ( Math.cos(i) * 160.0 ) + 160;
            int y1 = (int) ( Math.sin(i) * 138.0 ) + 138;
            int x2 = (int) ( -Math.cos(i) * 160.0 ) + 160;
            int y2 = (int) ( -Math.sin(i) * 138.0 ) + 138;
            g2d.setStroke(new BasicStroke(2));
            g2d.drawLine(x1,y1,x2,y2);
        }
        g2d.setFont(new Font("SansSerif",Font.BOLD | Font.ITALIC, 20));
        g2d.drawString("EscherGraphics2d",70,100);
        g2d.setColor(Color.yellow);
        g2d.fillOval( 160-20,138-20,40,40);
        g2d.setColor(Color.black);
        g2d.fillPolygon(new int[] {-10+160,0+160,10+160,0+160}, new int[] {0+138,10+138,0+138,-10+138}, 4);
        g2d.drawPolygon(new int[] {-160+160,0+160,160+160,0+160}, new int[] {0+138,138+138,0+138,-138+138}, 4);
    }
}