ArrayIndexOutOfBound Exception for image
Hi All,
I my application i want to convert image into inverted format.So for this i have written this code.
ParameterBlock pb = new ParameterBlock();
pb.add(bufferedImage);
PlanarImage im = (PlanarImage)JAI.create("awtImage", pb);
ParameterBlock pb1 = new ParameterBlock();
pb1.addSource(im);
PlanarImage newImage = JAI.create("invert", pb1);
ParameterBlock pb2 = new ParameterBlock();
pb2.addSource(newImage);
pb2.add(jpegFilePath);
pb2.add("jpeg");
pb2.add(null);
pb2.add(true);
RenderedOp op = JAI.create("filestore", pb2,null);
But i am getting this error while storing image.
java.lang.ArrayIndexOutOfBoundsException: Coordinate out of bounds!
at sun.awt.image.BytePackedRaster.getByteData(BytePackedRaster.java:378)
at sun.awt.image.BytePackedRaster.getDataElements(BytePackedRaster.java:273)
at java.awt.image.BufferedImage.getData(BufferedImage.java:1415)
at javax.media.jai.RenderedImageAdapter.getData(RenderedImageAdapter.java:158)
at javax.media.jai.PointOpImage.computeTile(PointOpImage.java:794)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.copyData(PlanarImage.java:2343)
at javax.media.jai.RenderedOp.copyData(RenderedOp.java:2299)
at javax.media.jai.PlanarImage.getAsBufferedImage(PlanarImage.java:2525)
at javax.media.jai.PlanarImage.getAsBufferedImage(PlanarImage.java:2546)
If any one knows how to invert image using JAI or java please reply me as soon as possible
Thanks & Regsrds
AP_java
Hi, Thanks for your reply.
But seeing the 2nd println statement is not my point. I was trying to point out that the NullPointerException caused within Image.createImage could not be caught even when i enclosed only the statement within a try-catch. This is not good because my users will get a shock when they see the exception.
Maybe there is a bug in the Image.createImage method. I will go log a bug in the bugbase later.
But anyway, i observe that this exception does not occur all the time. It only happen after i print a few images and more often when i use color. I guess it's a memory issue here.
So i went around it by reducing the memory usage of my app and using less colors. Up to 256 colors is quite safe.
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My suspection is, that someone is making an attack via the input parameters.
I use Integer.parseInt to get the numeric values of the request parameters.
Is there any vulnerability, or any way that Integer.parseInt throw an "ArrayIndexOutOfBounds" Exception, or I should look for something else. ThanksHello.
I'm having a jsp, that outputs some information (this part is not important).
I'm using Tomcat 5.0
Sometimes it happens that that jsp throws ArrayIndexOutOfBounds: 45, and Tomcat starts to throw OutOfMemory exception.
This would be not so strange if I had any array in the jsp. However, I do not. And furthermore, the line shown in the stacktrace log contains...a closing bracket.
Also, I cannot reproduce this - it happens to some of my users.
My suspection is, that someone is making an attack via the input parameters.
I use Integer.parseInt to get the numeric values of the request parameters.
Is there any vulnerability, or any way that Integer.parseInt throw an "ArrayIndexOutOfBounds" Exception, or I should look for something else. Thanks -
This is my Jsp code for image upload in database:
This is my Jsp code for image upload in database:
-----------Upload.jsp----------------
<html>
<head>
</head>
<body bgproperties="fixed" bgcolor="#CCFFFF">
<form method="POST" action="UploadPicture.jsp" enctype="multiform/form-data">
<%! int update=0; %>
<%@ page import="java.util.*" %>
<%@ page import="java.sql.*" %>
<%@ page import="java.text.*" %>
<%@ page import="java.sql.Date" %>
<%@ page import="java.io.*"%>
<%@ page language = "java" %>
<%
try
String ct="3";
String path;
File image=new File(request.getParameter("upload"));
path=request.getParameter("upload");
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:itPlusElectronics","","");
PreparedStatement pstmt=con.prepareStatement("insert into graphics values(?,?,?)");
pstmt.setString(2,path);
pstmt.setString(3,ct);
InputStream is=new FileInputStream(path);
pstmt.setBinaryStream(1, is, (int)(image.length()));
int s=pstmt.executeUpdate();
if(s>0)
out.println("Uploaded");
else
%>
unsucessfull
<%}
is.close();
pstmt.close();
catch(Exception e)
}%>
</p>
<p><br>
<img src="UploadedPicture.jsp">image</img>
<p></p>
</form>
</body>
</html>
My database name is itPlusElectronics and the table name is "graphics".
I have seen as a result of the above code that the image is stored in database as "Long binary data". and database table is look like as follows-------
picture path id
Long binary data D:\AMRIT\1-1-Picture.jpg 3
To retrive and display i use this JSP code as--
------------------------UploadedPicture.jsp------------------------------
<html>
<head>
</head>
<body bgproperties="fixed" bgcolor="#CCFFFF">
<%! int update=0; %>
<%@ page import="java.util.*" %>
<%@ page import="java.sql.*" %>
<%@ page import="java.text.*" %>
<%@ page import="java.io.*"%>
<%@ page language = "java" %>
<%@page import="javax.servlet.ServletOutputStream"%>
<%
try
String path;
path=request.getParameter("upload1");
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:itPlusElectronics","","");
PreparedStatement pst = con.prepareStatement("SELECT * FROM graphics WHERE id ='3'");
// pst.setString(3, id);
ResultSet rs = pst.executeQuery();
path=rs.getString("path");
if(rs.next()) {
byte[] bytearray = new byte[4096];
int size=0;
InputStream sImage;
sImage = rs.getBinaryStream(1);
response.reset();
response.setContentType("image/jpeg");
response.addHeader("Content-Disposition","filename=path");
while((size=sImage.read(bytearray))!= -1 )
response.getOutputStream().write(bytearray,0,size) ;
response.flushBuffer();
sImage.close();
rs.close();
catch(Exception e)
%>
</body>
</html>
Now after browsing a jpg image file from client side and pressing submit button ;
I am unable display the image in the Upload.jsp file.Though I use
<img src="UploadedPicture.jsp">image</img> HTML code in Upload.jsp
file .
Now I am unable to find out the mistakes which is needed for displaying the picture in the Upload.jsp page..
If any one can help with the proper jsp code to retrive and display the image ,please please help me !!!!!!!!!!!!!!!!!!!!!!!!!!dketcham wrote:
cotton.m wrote:
>
2) I'm looking at how you called stuff, and you're trying to call the jsp file as an image? That jsp isn't the source of the image, just a page linking to an image. I think if you really want to do things that way you're going to need to just include that jsp within the jsp you're calling it from (or you can do it the easy way, and if you have the information to get the path of the image you want, you could simply call the image from the first jsp you posted)This is incorrect.
There are two JSPs. The second when called will (if it worked) return the source of an image as stored in the database.even when called with <img src=xx.jsp>??
Yes.
If any of what I say next seems obvious or otherwise negative I apologize, just trying to explain and I don't know what you know vs what you don't.
The link in the src is just a URL not a filetype. So just because it ends with JSP does not mean it has to return HTML. The content type is determined by the browser using the Content-Type header returned by the server in the HTTP response. In this case the header is set to be a jpeg so that's what the browser will attempt to interpret the content part of the response as.
So in fact one is not limited to just HTML or images but whatever content type you would like to return (that the browser can understand anyway). This could be HTML or it could be an image of some type or it could be a PDF or it could be an Excel spreadsheet. All you have to do in the JSP is set the header appropriately and then send content that is actually in that format.
This does not just apply to JSP by the way but all other web programming languages. You can do similar things to produce the same results in PHP, Perl, ASP etc.
The only JSP/Servlet complication is whether or not doing this in a JSP is a "good" idea but I am not an expert enough at that to make a definitive statement. Mostly though JDBC in a JSP is a no-no. -
All content except for PDF are stuck in GenWWW - IBR IS converting them..
Hello,
We are having a serious issue with our UCM/IBR where all new documents except for PDF's are successfully converted (we confirmed this through IBR weblayout directory and log files) but they are never Released.
We have tried the following:
1. Reindexing
2. Rebooting both servers (including admin server)
We are using Direct PDFExport and Digital Media Graphics for conversion.
The connection status is OK and there are no errors in the logs and I can't even begin to tell you what some of this means in the trace log.
I don't usually say this but... Please help!!Guys. It DID go through IBR. The conversion files, such as the thumbnails and web renditions for images are all being created and the trace logs in IBR even confirm that they were successfully converted. The issue is NOT that files are not being converted, it is that they are not getting released from GenWWW. We have rebuilt the Index twice and rebooted the services on each box.
Yes we are using PassThru for PDF's because there is no need to convert them. We are using Digital Media Graphics and PDFExport for the rest. This morning when we got in most of them had finally converted, but there are a few that are not, and we submitted some an hour ago and they are showing the same symptoms.
I have noticed a couple of strange things from the trace logs, as well as the weblayout folder:
1. The weblayout folder that contains the conversions in question from yesterday (there were about 3 dozen jpg's from the same folder) have something interesting going on. We recently renamed the parent folder from "Photos" to "Project Visuals," however within that weblayout folder there is ONLY a "Photos" folder - yet it contains all the newly converted files (which are in Project Visuals folder). I am thinking this might be a problem.
2. In the IBR logs I notice at the beginning and end of the job the COPYJOB operation does not get passed a job id. The exact errors are:
refinery/6 03.08 16:51:21.009 IdcServer-3047 entered m_postConvertedJobsTable edit with action: COPYJOBS; on jobID: <no id passed>
refinery/6 03.08 16:51:36.219 IdcServer-3048 entered m_postConvertedJobsTable edit with action: COPYJOBS; on jobID: <no id passed>
refinery/6 03.08 16:51:41.305 IdcServer-3049 entered m_postConvertedJobsTable edit with action: COPYJOBS; on jobID: <no id passed>
refinery/6 03.08 16:51:41.352 IdcServer-3050 entered m_postConvertedJobsTable edit with action: COPYJOBS; on jobID: <no id passed>
refinery/6 03.08 16:51:44.082 Job_10396_prod_ucm starting conversion: DIGITAL MEDIA GRAPHICS; is subconversion: false
refinery/6 03.08 16:51:44.082 Job_10396_prod_ucm Script: TRUE
refinery/6 03.08 16:51:44.082 Job_10396_prod_ucm Evaluated to: TRUE
refinery/6 03.08 16:51:44.082 Job_10396_prod_ucm Script: DigitalGraphicRenditions
refinery/6 03.08 16:51:44.082 Job_10396_prod_ucm Evaluated to: DigitalGraphicRenditions
refinery/6 03.08 16:51:44.082 Job_10396_prod_ucm Starting step: DigitalGraphicRenditions
refinery/6 03.08 16:51:44.082 Job_10396_prod_ucm Script: onErrorFail, producesRequiredWebviewable...
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm Finished step: DigitalGraphicRenditions
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm Steps completed for Job: 10396
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm DigitalGraphicRenditions: 1: C:/app/oracle/product/fmw/USER_P~1/domains/prod_ibr_domain/ucm/ibr/vault/~temp/prod_ucm/10396/prod_032539~4.jpg
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm dConversionState = Converted
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm dConvMessage = Success
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm dFormat = image/jpeg
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm dWebExtension = jpg
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm RefineryConvertedFile = prod_032539~4.jpg
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm RefineryPrimaryConvertedPath = C:/app/oracle/product/fmw/USER_P~1/domains/prod_ibr_domain/ucm/ibr/vault/~temp/prod_ucm/10396/prod_032539~4.jpg
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm AdditionalRenditions = THUMBNAIL_PNG,ZIPRENDITIONS
refinery/6 03.08 16:51:45.408 Job_10396_prod_ucm finished conversion: DIGITAL MEDIA GRAPHICS; is subconversion: false
refinery/6 03.08 16:51:49.136 QueueLockId_10396 entered m_postConvertedJobsTable edit with action: ADDJOB; on jobID: 10396
refinery/6 03.08 16:51:51.429 IdcServer-3052 entered m_postConvertedJobsTable edit with action: COPYJOBS; on jobID: <no id passed>
refinery/6 03.08 16:51:53.847 IdcServer-3054 entered m_postConvertedJobsTable edit with action: DELETEJOB; on jobID: 10396
refinery/6 03.08 16:52:06.639 IdcServer-3059 entered m_postConvertedJobsTable edit with action: COPYJOBS; on jobID: <no id passed>As you can see the job has finished successfully from the log as well.
Do any of you know what is the normal expected behavior for these two scenarios? Shouldn't the conversion process create a new folder and update all the references from the photos folder?
I will continue with my troubleshooting as you have suggested. I appreciate the feedback.
thank you
s
Edited by: SethBW on Mar 9, 2012 7:59 AM
Edited by: SethBW on Mar 9, 2012 7:59 AM
I'm not sure why but it won't let me get rid of the jive quote tag... that's a problem with this forum and the default output of the trace logs.
Edited by: SethBW on Mar 9, 2012 8:21 AM -
Looking for Image Button Applet
I'm looking for a simple image button applet (normal state, mouse-over and mouse-click) which can refer to a HTML or start a Javascript function. Can anyone help?
KippieHi,
This is the source code. I don't quite understand what I should do with the tokens. I hope this is allright. Thanks for your help
Kippie.
import java.net.URL;
import java.awt.Color;
import java.util.Vector;
import java.util.Enumeration;
import java.util.StringTokenizer;
import java.applet.Applet;
import java.applet.AudioClip;
Program Name: ImageURLButtonBar
Author: Paul Whitelock
Version: 1.1
Copyright: (c) 1997 by Paul Whitelock and Modern Minds, Inc.
Requires: ImageURLButtonBar.class
ButtonBar.class
ButtonBarObserver.class (Interface definition)
ButtonRegion.class
ButtonAnimate.class
Modifications: v1.01 (15 April 97)
* Added "sticky" button behavior (controlled
by applet "stick" parameter)
v1.03 (25 June 97)
* Added applet parameter "useCodeBase". If useCodeBase
is true, then image file locations will be based on the directory
in which the Java class files are located. If useCodeBase is false, then
the locations will be based on the HTML directory. Note that audio
file locations are always based on the Java directory. The default
for useCodeBase is false (use HTML directory for base).
* The "stick" parameter will now accept a button number in
addition to the value of "true" or "false". If a button number
is specified, then that button will be "stuck" down
when the button bar initializes.
* Added the capability of loading multiple URLs for each button
with an optional target for each URL.
v1.1 (25 September 97)
* Added "baseBrighten" and "baseBrightenTint" parameters to control
highlighting for base button bar.
* Added "mouseOverBrighten" and "moBrightenTint" parameters to control
highlighting for base button bar.
* Added "mdBrightenTint" and "mdBrightenAll" parameters to control
highlighting for base button bar. Previous versions of the applet
supported "mouseDownBrighten," but only if button borders were not
drawn for the button-down button bar (the "mdBrightenAll" can be set
to "true" to override the this default behavior).
* An "appletBGColor" parameter has been added to set the
applet background color. The applet background color is
sometimes visible during scrolling or during a page repaint.
NOTE: This source code was composed using Microsoft Visual J++
with tab stops of 4. Text may not be formatted correctly
if another editor is used.
******************************** PARAMETERS ********************************
Applet Parm ButtonBar Class Parm Default Value
================== ======================= ==================
appletBGColor
disableBadURL true
mouseEnterAudio null (audio disabled)
mouseClickAudio null (audio disabled)
buttonDownAudio null (audio disabled)
stick false
* useCodeBase base false (i.e., use getDocumentBase())
orient barHorizontal horizontal if applet width > height
base baseBarName none - parameter REQUIRED
mouseOver mouseOverBarName null
mouseOver2 mouseOverBar2Name null
mouseDown mouseDownBarName null
mouseDownOver mouseDownOverBarName null
buttonsDisabled buttonsDisabledBarName null
background backgroundImageName null
barXPos barXBackgroundPos 0
barYPos barYBackgroundPos 0
buttonBorders drawButtonBorders ButtonBar.BORDERS_NONE
borderColorTL borderColorTopLeft null (Color.white if error)
borderColorBR borderColorBottomRight null (Color.gray if error)
borderIntensity borderIntensityPercent 50 (used only if borders)
borderSize buttonBorderSize 1 (used only if borders)
downShift downShift false
downShiftAmt downShiftAmt buttonBorderSize
baseBrighten baseBrightenPct
baseBrightenTint baseBrightenTint
mouseOverBrighten mouseOverBrightenPct
moBrightenTint mouseOverBrightenTint
mouseDownBrighten mouseDownBrightenPct
mdBrightenTint mouseDownBrightenTint
mdBrightenAll mouseDownBrightenAll
buttonsDisabledDim buttonsDisabledDimPct 25 (used only if no buttonsDisabled)
grayBarBrighten grayBarBrighten 0
frameRate frameRate 150 (used only if mouseOver2)
* If useCodeBase is true, then all file locations are based on the Java class file
directory (i.e., use getCodeBase()).
public class ImageURLButtonBar extends Applet implements ButtonBarObserver {
// Instance Variables
ButtonBar buttonBar;
Vector buttonURL = new Vector(10, 10);
Vector buttonURLTarget = new Vector(10, 10);
Vector buttonDescription = new Vector(10, 10);
AudioClip mouseEnterAudio = null;
AudioClip mouseClickAudio = null;
AudioClip buttonDownAudio = null;
// Applet Initialization
public void init() {
// =================================================================
// Applet ImageURLButtonBar specific parameters
// =================================================================
// appletBGColor
// Set applet background color
String parm = getParameter("appletBGColor");
if (parm != null) {
try {
setBackground(new Color(Integer.parseInt(parm, 16)));
catch (Exception e) {
reportError("appletBGColor");
// disableBadURL
// If true, then any button with an invalid URL will be disabled
parm = getParameter("disableBadURL");
boolean disableBadURL;
if (parm == null || !parm.equals("false")) disableBadURL = true;
else disableBadURL = false;
// mouseEnterAudio
// Sound to play each time the mouse enters any of the buttons
parm = getParameter("mouseEnterAudio");
if (parm != null) {
mouseEnterAudio = getAudioClip(getCodeBase(), parm);
if (mouseEnterAudio == null) reportError("Can't load " + parm);
// mouseClickAudio
// Sound to play each time a mouse down click occurs in a button
parm = getParameter("mouseClickAudio");
if (parm != null) {
mouseClickAudio = getAudioClip(getCodeBase(), parm);
if (mouseClickAudio == null) reportError("Can't load " + parm);
// buttonDownAudio
// Sound to play each time a mouse up occurs in a button (i.e, the
// button has be toggled through it's "down" position)
parm = getParameter("buttonDownAudio");
if (parm != null) {
buttonDownAudio = getAudioClip(getCodeBase(), parm);
if (buttonDownAudio == null) reportError("Can't load " + parm);
// stickyBar
// If the "stick" applet parameter is "true", then buttons will stay
// "stuck" in the down position until another button is clicked.
// If the "stick" applet parameter is the number of a button in the
// button bar, then that button will be "stuck" down when the
// button bar initializes.
int stickyBar = -1;
parm = getParameter("stick");
if (parm != null && !parm.toLowerCase().equals("false")) {
try {
stickyBar = Integer.parseInt(parm);
catch (Exception e) {
stickyBar = 0;
// =================================================================
// Class ButtonBar specific parameters
// =================================================================
// orient (barHorizontal)
// If this parameter = 'h' then the button bar is horizontal
// If this parameter = 'v' then the button bar is vertical
// If this parameter is not specified, then the button bar is
// horizontal if the applet width is greater than the applet height
boolean horizontal;
parm = getParameter("orient");
if (parm == null) horizontal = size().width > size().height;
else horizontal = parm.equals("h") ? true : false;
// base (baseBarName)
// The base image file for the buttons. This is the only image
// file that MUST be specified.
String baseBar = getParameter("base");
if (baseBar == null) {
reportError("Parameter 'base' REQUIRED!");
return;
// barXPos (barXBackgroundPos)
// barYPos (barYBackgroundPos)
// If a background image is specified then these to parameters
// represent the top-left corner location where the button bar
// should be placed on the background
int barXPos = 0, barYPos = 0;
try {
parm = getParameter("barXPos");
if (parm != null) barXPos = Integer.parseInt(parm);
parm = getParameter("barYPos");
if (parm != null) barYPos = Integer.parseInt(parm);
catch (Exception e) {
reportError("barXPos or barYPos");
barXPos = barYPos = 0;
// buttonBorders (drawButtonBorders)
// "none" = do not draw any button borders
// "all" = draw borders around all button bar buttons
// "base" = draw borders only around buttons on base button bar
// "other" = draw borders around all button bar buttons EXCEPT base button bar buttons
parm = getParameter("buttonBorders");
int drawButtonBorders = ButtonBar.BORDERS_NONE;
if (parm != null) {
if (parm.equals("base")) drawButtonBorders = ButtonBar.BORDERS_BASE;
else if (parm.equals("other")) drawButtonBorders = ButtonBar.BORDERS_OTHER;
else if (parm.equals("all")) drawButtonBorders = ButtonBar.BORDERS_ALL;
// borderColorTL (borderColorTopLeft)
// borderColorBR (borderColorBottomRight)
// Normally, borders are drawn around buttons by lightening or darkening
// the image in the border region. A specific color can be used instead
// for the top and left borders and/or the bottom and right borders. The
// value specified for either of these two parameters should be a hexadecimal
// number (e.g., "FF0000" for red, "888888" for medium gray, etc.).
Color borderColorTopLeft = null;
Color borderColorBottomRight = null;
try {
parm = getParameter("borderColorTL");
if (parm != null) borderColorTopLeft = new Color(Integer.parseInt(parm, 16));
parm = getParameter("borderColorBR");
if (parm != null) borderColorBottomRight = new Color(Integer.parseInt(parm, 16));
catch (Exception e) {
reportError("borderColorTL or borderColorBR");
borderColorTopLeft = Color.white;
borderColorBottomRight = Color.gray;
// borderIntensity (borderIntensityPercent)
// If borders are drawn for buttons, and if a border color is not specified
// (see above), then the image in the border region will be lightened or
// darkened by this percentage to create the borders.
int borderIntensityPercent = 50;
try {
parm = getParameter("borderIntensity");
if (parm != null) borderIntensityPercent = Integer.parseInt(parm);
catch (Exception e) {
reportError("borderIntensity");
borderIntensityPercent = 50;
// borderSize (buttonBorderSize)
// The size of borders, if borders are specified.
int buttonBorderSize = 1;
try {
parm = getParameter("borderSize");
if (parm != null) buttonBorderSize = Integer.parseInt(parm);
catch (Exception e) {
reportError("borderSize");
// downShift
// If true, then the button image is shift down and right downShiftAmt
// (see below) pixels when the mouse is clicked on the button.
parm = getParameter("downShift");
boolean downShift = (parm == null || !parm.equals("true")) ? false : true;
// downShiftAmt
// If downShift is true, then the button image is shift down and right
// downShiftAmt (see above) pixels when the mouse is clicked on the button.
int downShiftAmt = buttonBorderSize;
try {
parm = getParameter("downShiftAmt");
if (parm != null) downShiftAmt = Integer.parseInt(parm);
catch (Exception e) {
reportError("downShiftAmt");
// baseBrighten (baseBrightenPct)
// The base bar will be lightened by this percentage
int baseBrightenPct = 0;
try {
parm = getParameter("baseBrighten");
if (parm != null) baseBrightenPct = Integer.parseInt(parm);
catch (Exception e) {
reportError("baseBrighten");
// mouseOverBrighten (mouseOverBrightenPct)
// A button will be lightened by this percentage when the mouse
// moves over a button.
int mouseOverBrightenPct = 0;
try {
parm = getParameter("mouseOverBrighten");
if (parm != null) mouseOverBrightenPct = Integer.parseInt(parm);
catch (Exception e) {
reportError("mouseOverBrighten");
// mdBrightenAll (mouseDownBrightenAll)
// A button will be lightened by this percentage when the mouse
// moves over a button.
boolean mouseDownBrightenAll = false;
parm = getParameter("mdBrightenAll");
if (parm != null && parm.charAt(0) == 't') mouseDownBrightenAll = true;
// mouseDownBrighten (mouseDownBrightenPct)
// A button will be lightened by this percentage when it is
// clicked.
int mouseDownBrightenPct = 0;
try {
parm = getParameter("mouseDownBrighten");
if (parm != null) mouseDownBrightenPct = Integer.parseInt(parm);
catch (Exception e) {
reportError("mouseDownBrighten");
// baseBrightenTint (mouseOverBrightenTint)
// moBrightenTint (mouseOverBrightenTint)
// mdBrightenTint (mouseDownBrightenTint)
Color baseBrightenTint = null;
Color mouseOverBrightenTint = null;
Color mouseDownBrightenTint = null;
try {
parm = getParameter("baseBrightenTint");
if (parm != null) baseBrightenTint = new Color(Integer.parseInt(parm, 16));
parm = getParameter("moBrightenTint");
if (parm != null) mouseOverBrightenTint = new Color(Integer.parseInt(parm, 16));
parm = getParameter("mdBrightenTint");
if (parm != null) mouseDownBrightenTint = new Color(Integer.parseInt(parm, 16));
catch (Exception e) {
reportError("baseBrightenTint, moBrightenTint or mdBrightenTint");
// buttonsDisabledDim (buttonsDisabledDimPct)
// If a button is disabled and if there is no buttonsDisabled image,
// then the button will be dimmed by this percentage.
int buttonsDisabledDimPct = 25;
try {
parm = getParameter("buttonsDisabledDim");
if (parm != null) buttonsDisabledDimPct = Integer.parseInt(parm);
catch (Exception e) {
reportError("buttonsDisabledDim");
// grayBarBrighten
// If there is no mouseOver image, then the base image will be used for
// the mouseOver image, and a grayscale version of the base image will
// be used for base button images. This parameter can be used to lighten
// COLORS (not grays) in the image before it is converted to grayscale.
// This can help if the standard conversion produces buttons that are
// too dark.
int grayBarBrighten = 0;
try {
parm = getParameter("grayBarBrighten");
if (parm != null) grayBarBrighten = Integer.parseInt(parm);
catch (Exception e) {
reportError("grayBarBrighten");
// frameRate
// If a mouseOver2 image is specified, then this parameter controls
// how quickly animation will be performed (using mouseOver and mouseOver2
// images) in milliseconds when the mouse is moved over a button.
int frameRate = 150;
try {
parm = getParameter("frameRate");
if (parm != null) frameRate = Integer.parseInt(parm);
catch (Exception e) {
reportError("frameRate");
// =================================================================
// Instantiate the button bar
// =================================================================
try {
// Allow the use of documentBase (default) or codeBase for image file
// base directory.
URL documentBase;
parm = getParameter("useCodeBase");
if (parm == null || parm.equals("false")) documentBase = getDocumentBase();
else documentBase = getCodeBase();
// Create the button bar
buttonBar = new ButtonBar(
horizontal, /* barHorizontal */
documentBase, /* base */
baseBar, /* baseBarName */
getParameter("mouseOver"), /* mouseOverBarName */
getParameter("mouseOver2"), /* mouseOverBar2Name */
getParameter("mouseDown"), /* mouseDownBarName */
getParameter("mouseDownOver"), /* mouseDownOverBarName */
getParameter("buttonsDisabled"),/* buttonsDisabledBarName */
getParameter("background"), /* backgroundImageName */
barXPos, /* barXBackgroundPos */
barYPos, /* barYBackgroundPos */
drawButtonBorders, /* drawButtonBorders */
borderColorTopLeft, /* borderColorTopLeft */
borderColorBottomRight, /* borderColorBottomRight */
borderIntensityPercent, /* borderIntensityPercent */
buttonBorderSize, /* buttonBorderSize */
downShift, /* downShift */
downShiftAmt, /* downShiftAmt */
baseBrightenPct, /* baseBrightenPct */
baseBrightenTint, /* baseBrightenTint */
mouseOverBrightenPct, /* mouseOverBrightenPct */
mouseOverBrightenTint, /* mouseOverBrightenTint */
mouseDownBrightenAll, /* mouseDownBrightenAll */
mouseDownBrightenPct, /* mouseDownBrightenPct */
mouseDownBrightenTint, /* mouseDownBrightenTint */
buttonsDisabledDimPct, /* buttonsDisabledDimPct */
grayBarBrighten, /* grayBarBrighten */
frameRate /* frameRate */
// =================================================================
// Add buttons to the button bar
// =================================================================
ButtonRegion buttonToAdd;
String buttonNbr, urlString;
URL urlForButton;
int nbr = 0;
int buttonStart, buttonSize;
// Initialize button on bar flag (used to determine if at least one button
// was successfully added to the button bar)
boolean buttonOnBar = false;
// This loop will be exited when no more buttons can be found in the HTML
while (true) {
// Construct the prefix for the button parameters
buttonNbr = "button" + ++nbr;
// Find the starting offset and the size of the button
// If null is returned as the starting offset parameter value for the
// button, then all buttons should have been read so the loop can
// be exited.
try {
parm = getParameter(buttonNbr + "Start");
if (parm == null) break;
buttonStart = Integer.parseInt(parm);
buttonSize = Integer.parseInt(getParameter(buttonNbr + "Size"));
catch (Exception e) {
reportError("Button" + nbr + " start or size in error or missing");
buttonStart = 0;
buttonSize = 0;
// Create a ButtonRegion for the button
// The button ID will be set to the number of the button (this will
// be converted to an integer later when a buttonBarEvent is received).
buttonToAdd = new ButtonRegion("" + nbr, buttonStart, buttonSize);
// If the buttons on this button bar are "sticky" buttons, then
// enable "sticky" behavior for this button. The button will always
// "pop-up" whenever another button is clicked.
if (stickyBar >= 0) {
buttonToAdd.stickyButton(true, ButtonRegion.POPUP_ALWAYS, false);
// If the current button number matches the value of stickyBar, then the
// current button should be "stuck" down for its initial state.
if (stickyBar == nbr) buttonToAdd.setStuck(true);
// Try to add the button (i.e., the ButtonRegion) to the buttonBar
if (buttonBar.addButton(buttonToAdd)) {
// Set flag to indicate that at least one button has been added
buttonOnBar = true;
// The button was successfully added, so save the button's description
// (which will be displayed in the status bar) and the target frame
// for the button URL in the appropriate Vector.
buttonDescription.addElement(getParameter(buttonNbr + "Desc"));
buttonURLTarget.addElement(getParameter(buttonNbr + "Target"));
// Try to create a URL for the button.
// If the URL is invalid, then place an error message in the
// buttonURLTarget Vector (this will be used to warn the user
// when the button is clicked). Also, if disableBadURL is true, then
// disable the button.
String theURL;
urlString = getParameter(buttonNbr + "URL");
if (urlString != null) {
Enumeration urls = new StringTokenizer(urlString);
while (urls.hasMoreElements()) {
theURL = (String)urls.nextElement();
try {
urlForButton = new URL(theURL);
catch (Exception e) {
try {
urlForButton = new URL(getDocumentBase(), theURL);
catch (Exception e2) {
reportError("Button" + nbr + " has invalid URL");
buttonURLTarget.setElementAt("Invalid URL", nbr - 1);
urlString = null;
break;
else {
reportError("Button" + nbr + " has no URL");
buttonURLTarget.setElementAt("No URL", nbr - 1);
buttonURL.addElement(urlString);
// Remove any unused elements in the Vectors
buttonURL.trimToSize();
buttonURLTarget.trimToSize();
buttonDescription.trimToSize();
// If no buttons were added, throw exception
if (!buttonOnBar) throw new IllegalArgumentException("No buttons on bar");
// Let the buttonBar know that all buttons have been defined. This is
// really only necessary if downShift is true, but it won't hurt calling
// the method in either case.
buttonBar.allButtonsDefined();
// Add the applet as an observer so that the applet will be notified
// when button events occur.
buttonBar.addButtonObserver(this);
// Enable the button bar now that all buttons have been defined.
// (the buttonBar is disabled when it is created and must be
// specifically enabled).
buttonBar.enable(true);
// Add the buttonBar to the applet
setLayout(null);
add(buttonBar);
catch (Exception e) {
reportError("Can't create ButtonBar\n" + e);
// buttonBarEvent
// This method is called by the ButtonBar whenever a button event occurs
// It provides the ButtonBar that the event occurred for, the button ID
// that the event occurred for, and the event type.
public void buttonBarEvent(ButtonBar barID, String buttonID, int buttonEvent) {
String description;
// The buttonBar will send an IMAGES_READY event when all button bar images
// have been prepared. We are not interested in this event, but only in
// certain "action" events that occur for a button.
if (buttonEvent != ButtonBar.IMAGES_READY) {
// A number in String format was assigned as the buttonID when each
// ButtonRegion was created. The buttonID String will now be converted
// back into a number that can be used as a Vector index to retrieve
// button specific information (i.e., URL, target frame, and description).
int buttonNbr = Integer.parseInt(buttonID) - 1;
switch (buttonEvent) {
// If a mouseDown event has occurred for the button, and if an
// AudioClip is available for this event, play the AudioClip.
case ButtonBar.MOUSE_CLICK:
if (mouseClickAudio != null) mouseClickAudio.play();
break;
// If the mouse has been moved over a button, display the button's
// description in the browser's status area. If the button that the mouse
// is over is an active button, and if there is an AudioClip available
// for this event, then play the audio clip.
case ButtonBar.MOUSE_ENTER:
case ButtonBar.MOUSE_ENTER_DISABLED:
description = (String)buttonDescription.elementAt(buttonNbr);
if (description != null) showStatus(description);
if (mouseEnterAudio != null && buttonEvent == ButtonBar.MOUSE_ENTER) {
mouseEnterAudio.play();
break;
// If the mouse has been moved off of a button and if the button has
// description text associated with it, then clear the browser's
// browser's status area.
case ButtonBar.MOUSE_EXIT:
case ButtonBar.MOUSE_EXIT_DISABLED:
description = (String)buttonDescription.elementAt(buttonNbr);
if (description != null) showStatus("");
break;
// If the button has been depressed (i.e., a mouseDown followed by
// a mouseUp for the same button) then load the URL(s) for the button
// in the target frame(s), if specified. If the URL is null, then the
// URL was found to be missing or invalid, so display the text stored in
// the buttonURLTarget Vector in the brower's status area. If there is
// an AudioClip for the event, play the audio.
case ButtonBar.BUTTON_DOWN:
// Get the string of URLs and Targets for the button
String urlString = (String)buttonURL.elementAt(buttonNbr);
String targetString = (String)buttonURLTarget.elementAt(buttonNbr);
// If there is at least one URL for the button
if (urlString != null) {
URL urlForButton;
String theURL;
String theTarget;
Enumeration urls = new StringTokenizer(urlString);
Enumeration targets = null;
if (targetString != null) targets = new StringTokenizer(targetString);
// While there is another URL for the button
while (urls.hasMoreElements()) {
// Get the next String token that represents a URL
theURL = (String)urls.nextElement();
// Convert the String to a URL
try {
urlForButton = new URL(theURL);
catch (Exception e) {
try {
urlForButton = new URL(getDocumentBase(), theURL);
catch (Exception e2) {
urlForButton = null;
break;
// If the String was successfully convert to a URL
if (urlForButton != null) {
// If there is a target for this URL
if (targets != null && targets.hasMoreElements()) {
// Get the String that represents the target
theTarget = (String)targets.nextElement();
// If the target String does NOT begin with a "-",
// then load the URL in the target
if (theTarget.charAt(0) != '-') {
getAppletContext().showDocument(urlForButton, theTarget);
// Else a target for this URL should not be used
else {
getAppletContext().showDocument(urlForButton);
// Else there is no target for this URL, so just show
// the URL.
else {
getAppletContext().showDocument(urlForButton);
// Else URL is missing or invalid
else showStatus((String)buttonURLTarget.elementAt(buttonNbr));
if (buttonDownAudio != null) buttonDownAudio.play();
break;
// Error reporting
private void reportError(String message) {
message = "[ImageURLButtonBar] Error - " + message;
System.out.println(message);
showStatus(message);
}
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