Program to draw grids
/*
* Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
* All rights reserved. Software written by Ian F. Darwin and others.
* $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
* cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
* pioneering role in inventing and promulgating (and standardizing) the Java
* language and environment is gratefully acknowledged.
*
* The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
* inventing predecessor languages C and C++ is also gratefully acknowledged.
*/
import java.awt.Canvas;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
/**
* Program to draw grids.
*
* @author Ian Darwin, http://www.darwinsys.com/
*/
class GridsCanvas extends Canvas {
int width, height;
int rows;
int cols;
GridsCanvas(int w, int h, int r, int c) {
setSize(width = w, height = h);
rows = r;
cols = c;
}
public void paint(Graphics g) {
int i;
width = getSize().width;
height = getSize().height;
// draw the rows
int rowHt = height / (rows);
for (i = 0; i < rows; i++)
g.drawLine(0, i * rowHt, width, i * rowHt);
// draw the columns
int rowWid = width / (cols);
for (i = 0; i < cols; i++)
g.drawLine(i * rowWid, 0, i * rowWid, height);
}
}
/** This is the demo class. */
public class Grids extends Frame {
/*
* Construct a GfxDemo2 given its title, width and height. Uses a
* GridBagLayout to make the Canvas resize properly.
*/
Grids(String title, int w, int h, int rows, int cols) {
setTitle(title);
// Now create a Canvas and add it to the Frame.
GridsCanvas xyz = new GridsCanvas(w, h, rows, cols);
add(xyz);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
setVisible(false);
dispose();
System.exit(0);
}
});
// Normal end ... pack it up!
pack();
}
public static void main(String[] a) {
new Grids("Test", 300, 300, 5, 10).setVisible(true);
}
}
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