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: GraphMaker.java,v 1.3 2000/12/15 09:39:17 pjm2 Exp $
 */
public class GraphMaker {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.3 $";
    

//---STATIC METHODS---

//---CONSTRUCTORS---

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


//---PUBLIC METHODS---

    public void writeGraph(String filename, int width, int height, int gradeX, int gradeY){
        
        BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

        _pd.drawGraph(img, width, height, gradeX, gradeY);
  
        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:	1.4
Committed:	Sat Jan 6 19:39:23 2001 UTC (24 years, 11 months ago) by pjm2
Branch:	MAIN
Changes since 1.3:	+4 -11 lines
Log Message:	Moved some parameters into the Parameter class. Program exits if the database driver cannot be found. Colours are now obtained from the IscreamColour class. (Including the infamous i-scream blue.) CpuUserReport provides an example of report overriding.
#	Content
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: GraphMaker.java,v 1.3 2000/12/15 09:39:17 pjm2 Exp $
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: 1.3 $";
29
30
31	//---STATIC METHODS---
32
33	//---CONSTRUCTORS---
34
35	public GraphMaker(PlotData pd){
36	_pd = pd;
37	}
38
39
40	//---PUBLIC METHODS---
41
42	public void writeGraph(String filename, int width, int height, int gradeX, int gradeY){
43
44	BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
45
46	_pd.drawGraph(img, width, height, gradeX, gradeY);
47
48	try {
49	FileOutputStream fos = new FileOutputStream(new File(filename));
50	GifEncoder encoder = new GifEncoder(img, fos);
51
52	encoder.encode();
53
54	fos.flush();
55	fos.close();
56
57	System.out.println(" - Written "+width+"x"+height+" graph file");
58	}
59	catch(Exception e){
60	System.out.println("Could not write the .gif file.");
61	}
62
63	//g.dispose();
64	//frame.dispose();
65
66	}
67
68	/**
69	* Overrides the {@link java.lang.Object#toString() Object.toString()}
70	* method to provide clean logging (every class should have this).
71	*
72	* @return the name of this class and its CVS revision
73	*/
74	public String toString() {
75	return this.getClass().getName() + "(" + REVISION.substring(11, REVISION.length() - 2) + ")";
76	}
77
78	//---PRIVATE METHODS---
79
80	//---ACCESSOR/MUTATOR METHODS---
81
82	//---ATTRIBUTES---
83
84	private PlotData _pd;
85
86	//---STATIC ATTRIBUTES---
87
88	}