/*
* @(#)ScrollbarTest.java 1.2 95/08/16 Arthur van Hoff
*
* Copyright (c) 1995 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and without
* fee is hereby granted provided that this copyright notice
* appears in all copies. Please refer to the file "copyright.html"
* for further important copyright and licensing information.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*/
import java.awt.*;
class ScrollablePaintCanvas extends Canvas {
int tx = 20;
int ty = 100;
static final int SIZE = 500;
public void paint(Graphics g) {
g.translate(-tx, -ty);
for (int i = 0 ; i < 200 ; i += 20) {
g.drawOval(i, i, SIZE - 2*i, SIZE - 2*i);
}
g.setColor(Color.yellow);
g.drawLine(0, SIZE/2, SIZE, SIZE/2);
g.drawLine(SIZE/2, 0, SIZE/2, SIZE);
g.setColor(Color.red);
g.fillOval(SIZE/2 - 20, SIZE/2 - 20, 40, 40);
}
}
/**
* A test of a Container with BorderLayout.
*/
public class ScrollbarTest extends Frame {
Scrollbar vert;
Scrollbar horz;
ScrollablePaintCanvas cv;
public ScrollbarTest() {
super("ScrollbarTest");
add("Center", cv = new ScrollablePaintCanvas());
add("East", vert = new Scrollbar(Scrollbar.VERTICAL, cv.ty, 100, 0, ScrollablePaintCanvas.SIZE));
add("South", horz = new Scrollbar(Scrollbar.HORIZONTAL, cv.tx, 100, 0, ScrollablePaintCanvas.SIZE));
reshape(100, 200, 300, 250);
show();
}
public boolean handleEvent(Event evt) {
if (evt.target == vert) {
cv.ty = ((Integer)evt.arg).intValue();
cv.repaint();
return true;
}
if (evt.target == horz) {
cv.tx = ((Integer)evt.arg).intValue();
cv.repaint();
return true;
}
return false;
}
public static void main(String args[]) {
new ScrollbarTest();
}
}