/*
* Copyright (c) 2003 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 1.12 03/01/23
*/
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 1.12, 01/23/03
*/
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;
}
}
}
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