reports/DBReporter/GraphMaker.java

//---PACKAGE DECLARATION---

//---IMPORTS---

import java.io.*;
import java.awt.*;
import java.awt.image.*;

import Acme.JPM.Encoders.*;

/**
 * GraphMaker - Used to create and ultimately output a gif image.
 * This class accepts a PlotData object in the constructor, yet has
 * the filename, size, etc. passed in a separate method - this is so
 * that the same PlotData can easily be used to create several graphs
 * of differing filenames, sizes, etc...
 *
 * @author  $Author: pjm2 $
 * @version $Id:  $
 */
public class GraphMaker {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision:  $";

    private final int _fg = 0;  // black
    private final int _bg = 16777215; // white
    private final int _gradeColour = 13421823;  // i-scream blue ;)

//---STATIC METHODS---

//---CONSTRUCTORS---

    public GraphMaker(PlotData pd){
        _pd = pd;
    }


//---PUBLIC METHODS---

    public void writeGraph(String filename, int width, int height, int grade){
  
        //Uncomment this to find out the integer values for certain colours.
        //int rgb = 0*256*256 + 0*256 + 0;
        //System.out.println ((rgb & 0xff00ff00) | ((rgb & 0xff0000) >> 16) | ((rgb & 0xff) << 16));
        
        BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

        _pd.drawGraph(img, width, height, grade, _fg, _bg, _gradeColour);
  
        try {
            FileOutputStream fos = new FileOutputStream(new File(filename));
            GifEncoder encoder = new GifEncoder(img, fos);
            
            encoder.encode();

            fos.flush();
            fos.close();
            
            System.out.println("        - Written "+width+"x"+height+" graph file");
        }
        catch(Exception e){
            System.out.println("Could not write the .gif file.");
        }

        //g.dispose();
        //frame.dispose();
        
    }
    
    /**
     * Overrides the {@link java.lang.Object#toString() Object.toString()}
     * method to provide clean logging (every class should have this).
     *
     * @return the name of this class and its CVS revision
     */
    public String toString() {
        return this.getClass().getName() + "(" + REVISION.substring(11, REVISION.length() - 2) + ")";
    }
    
//---PRIVATE METHODS---

//---ACCESSOR/MUTATOR METHODS---

//---ATTRIBUTES---

    private PlotData _pd;

//---STATIC ATTRIBUTES---
    
}
Revision:	1.1
Committed:	Mon Dec 11 16:31:58 2000 UTC (25 years ago) by pjm2
Branch:	MAIN
Log Message:	Used to create and ultimately output a gif image. This class accepts a PlotData object in the constructor, yet has the filename, size, etc. passed in a separate method - this is so that the same PlotData can easily be used to create several graphs of differing filenames, sizes, etc.
#	User	Rev	Content
1	pjm2	1.1	//---PACKAGE DECLARATION---
2
3			//---IMPORTS---
4
5			import java.io.*;
6			import java.awt.*;
7			import java.awt.image.*;
8
9			import Acme.JPM.Encoders.*;
10
11			/**
12			* GraphMaker - Used to create and ultimately output a gif image.
13			* This class accepts a PlotData object in the constructor, yet has
14			* the filename, size, etc. passed in a separate method - this is so
15			* that the same PlotData can easily be used to create several graphs
16			* of differing filenames, sizes, etc...
17			*
18			* @author $Author: pjm2 $
19			* @version $Id: $
20			*/
21			public class GraphMaker {
22
23			//---FINAL ATTRIBUTES---
24
25			/**
26			* The current CVS revision of this class
27			*/
28			public final String REVISION = "$Revision: $";
29
30			private final int _fg = 0; // black
31			private final int _bg = 16777215; // white
32			private final int _gradeColour = 13421823; // i-scream blue ;)
33
34			//---STATIC METHODS---
35
36			//---CONSTRUCTORS---
37
38			public GraphMaker(PlotData pd){
39			_pd = pd;
40			}
41
42
43			//---PUBLIC METHODS---
44
45			public void writeGraph(String filename, int width, int height, int grade){
46
47			//Uncomment this to find out the integer values for certain colours.
48			//int rgb = 0256256 + 0*256 + 0;
49			//System.out.println ((rgb & 0xff00ff00) \| ((rgb & 0xff0000) >> 16) \| ((rgb & 0xff) << 16));
50
51			BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
52
53			_pd.drawGraph(img, width, height, grade, _fg, _bg, _gradeColour);
54
55			try {
56			FileOutputStream fos = new FileOutputStream(new File(filename));
57			GifEncoder encoder = new GifEncoder(img, fos);
58
59			encoder.encode();
60
61			fos.flush();
62			fos.close();
63
64			System.out.println(" - Written "+width+"x"+height+" graph file");
65			}
66			catch(Exception e){
67			System.out.println("Could not write the .gif file.");
68			}
69
70			//g.dispose();
71			//frame.dispose();
72
73			}
74
75			/**
76			* Overrides the {@link java.lang.Object#toString() Object.toString()}
77			* method to provide clean logging (every class should have this).
78			*
79			* @return the name of this class and its CVS revision
80			*/
81			public String toString() {
82			return this.getClass().getName() + "(" + REVISION.substring(11, REVISION.length() - 2) + ")";
83			}
84
85			//---PRIVATE METHODS---
86
87			//---ACCESSOR/MUTATOR METHODS---
88
89			//---ATTRIBUTES---
90
91			private PlotData _pd;
92
93			//---STATIC ATTRIBUTES---
94
95			}