ganttdiagram.java

一个用于安排项目时间表的Java程序

/*
 *  $Id: GanttDiagram.java,v 1.1.1.1 2001/03/20 22:17:38 mastermitch Exp $ 
 *
 *  2001 (C) by Christian Garbs <[e-mail]>
 *
 *  Licensed under GNU GPL (see COPYING for details)
 *
 */

package de.cgarbs.apps.jprojecttimer;

import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.util.Enumeration;

public class GanttDiagram extends Component implements Printable
{
    Project project;

    GanttDiagram(Project project)
    {
	this.project = project;
    }

    public void refresh()
    {
	repaint();
    }

    public void paint(Graphics graph)
    {
	Graphics2D g = (Graphics2D) graph;

	TaskList tasks = project.getTaskList();
	int textWidth = 70;
	int headerHeight = 30;
	int step=5;
	g.setColor(Color.white);
	g.fillRect(0, 0, getSize().width+1, getSize().height+1);
	if (tasks.size() > 0) {
	    tasks.recalculate();
	    int cols = tasks.projectEnd();

	    // Header
	    g.setColor(Color.blue);
	    g.drawString(Resource.get("task"), 5, headerHeight-3);
	    g.drawString("1", textWidth + 3, headerHeight - 3);
	    for (int col = -1; col < cols; col+=3) {
		if (col > 0) {
		    g.drawString(Integer.toString(col+1), (int) (textWidth + (col * (getSize().width - textWidth)) / cols + 3), headerHeight - 3);
		}
	    }
	    
	    // Tasks
	    for (int row = 0; row < tasks.size(); row++) {
		((Task) tasks.elementAt(row)).paint(g,
						    0,
						    getSize().width,
						    (row * (getSize().height - headerHeight)) / tasks.size() + headerHeight,
						    (getSize().height - headerHeight) / tasks.size(),
						    cols,
						    textWidth
						    );
	    }
	}
    }

    public int print(Graphics g, PageFormat pageFormat, int page)
    {
	if (page != 0) {
	    return Printable.NO_SUCH_PAGE;
	}
	paint(g);
	return Printable.PAGE_EXISTS;
    }
}