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Java Source | 1997-07-13 | 3.6 KB | 100 lines |
- /*
- * Copyright (c) 1995-1997 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.
- */
- /*
- * @(#)ClickArea.java 1.3 95/10/13
- *
- * Copyright (c) 1994-1995 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Permission to use, copy, modify, and distribute this software
- * and its documentation for NON-COMMERCIAL or COMMERCIAL purposes and
- * without fee is hereby granted.
- * Please refer to the file http://java.sun.com/copy_trademarks.html
- * for further important copyright and trademark information and to
- * http://java.sun.com/licensing.html for further important licensing
- * information for the Java (tm) Technology.
- *
- * 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.
- *
- * THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
- * CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
- * PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
- * NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
- * SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
- * SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
- * PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). SUN
- * SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
- * HIGH RISK ACTIVITIES.
- */
-
- import java.awt.Graphics;
-
- /**
- * An click feedback ImageArea class.
- * This class extends the basic ImageArea Class to show the locations
- * of clicks in the image in the status message area. This utility
- * ImageArea class is useful when setting up ImageMaps.
- *
- * @author Jim Graham
- * @version 1.3, 13 Oct 1995
- */
- class ClickArea extends ImageMapArea {
- /** The X location of the last mouse press. */
- int startx;
- /** The Y location of the last mouse press. */
- int starty;
-
- static String ptstr(int x, int y) {
- return "("+x+", "+y+")";
- }
-
- /**
- * When the user presses the mouse button, start showing coordinate
- * feedback in the status message line.
- */
- public boolean press(int x, int y) {
- showStatus("Clicked at "+ptstr(x, y));
- startx = x;
- starty = y;
- return false;
- }
-
- /**
- * Update the coordinate feedback every time the user moves the mouse
- * while he has the button pressed.
- */
- public boolean drag(int x, int y) {
- showStatus("Rectangle from "+ptstr(startx, starty)
- +" to "+ptstr(x, y)
- +" is "+(x-startx)+"x"+(y-starty));
- return false;
- }
-
- /**
- * Update the coordinate feedback one last time when the user releases
- * the mouse button.
- */
- public boolean lift(int x, int y) {
- return drag(x, y);
- }
- }
-
-