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Java Source | 2002-09-06 | 3.7 KB | 111 lines |
- /*
- * Copyright (c) 2002 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * -Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * -Redistribution in binary form must reproduct the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the distribution.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
- * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
- * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT
- * BE LIABLE FOR ANY DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT
- * OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR ITS
- * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
- * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
- * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
- * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN
- * IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that Software is not designed, licensed or intended for
- * use in the design, construction, operation or maintenance of any nuclear
- * facility.
- */
-
- /*
- * @(#)ClickArea.java 1.11 02/06/13
- */
-
- 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 1.11, 06/13/02
- */
- class ClickArea extends ImageMapArea {
- /** The X location of the last mouse press. */
- int startx;
- /** The Y location of the last mouse press. */
- int starty;
- /** A boolean to indicate whether we are currently being dragged. */
- boolean dragging;
-
- 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;
- dragging = true;
- 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) {
- dragging = false;
- return drag(x, y);
- }
-
- /**
- * This utility method returns the status string this area wants to
- * put into the status bar. If this area is currently animating
- * a message, then that message takes precedence over any other area
- * that a higher stacked area may want to display, otherwise the
- * message from the higher stacked area takes precedence.
- */
- public String getStatus(String prevmsg) {
- if (dragging) {
- return (status != null) ? status : prevmsg;
- } else {
- return (prevmsg == null) ? status : prevmsg;
- }
- }
- }
-
-