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Java Source | 1998-12-01 | 3.5 KB | 102 lines |
- /*
- * @(#)ClickArea.java 1.8 98/03/18
- *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
- * modify and redistribute this software in source and binary code form,
- * provided that i) this copyright notice and license appear on all copies of
- * the software; and ii) Licensee does not utilize the software in a manner
- * which is disparaging to Sun.
- *
- * 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 SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
- * OR DISTRIBUTING 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.
- *
- * This software is not designed or intended for use in on-line control of
- * aircraft, air traffic, aircraft navigation or aircraft communications; or in
- * the design, construction, operation or maintenance of any nuclear
- * facility. Licensee represents and warrants that it will not use or
- * redistribute the Software for such purposes.
- */
-
- 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 1.8, 03/18/98
- */
- 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;
- }
- }
- }
-
-