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- /*
- * @(#)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();
- }
- }
-