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Bug ID: 4250240 scrolling problem using java 1.2 plug in under internet explorer 4 and 5.
4250240 : scrolling problem using java 1.2 plug in under internet explorer 4 and 5.

Details
Type:
Bug
Submit Date:
1999-06-28
Status:
Resolved
Updated Date:
2001-10-19
Project Name:
JDK
Resolved Date:
2000-09-20
Component:
deploy
OS:
windows_nt,generic,windows_98
Sub-Component:
plugin
CPU:
x86,generic
Priority:
P1
Resolution:
Fixed
Affected Versions:
1.1.2,1.2.2,1.3.0
Fixed Versions:
1.3.1

Related Reports
Backport:
JDK-2027827 - scrolling problem using java 1.2 plug in under internet explorer 4 and 5.
Duplicate:
JDK-4264737 - background repaints cause bad flicker in IE
Duplicate:
JDK-4305078 - Scrolling problem with large applets in IE5
Relates:
JDK-4623541 - scrolling problem using JPI 1.3.1_02/1.4 rc1 under IE 5.5

Sub Tasks

Description

Name: rlT66838			Date: 06/28/99


We are developing an application in Java 1.2 (using JFC) that will be run in a browser using the Java plug-in. Under Internet Explorer 4 and 5, there is a problem with scrolling. The applet "breaks up" as it scroll off the page, causing visible components in the applet to become unusable (for example, JButtons). I have looked at other applets on the Internet that use the plug-in and have noticed the same behavior. The problem can be reproduced by making the browser's visible area smaller than the applet so that scroll bars appear. Scrolling will cause horizontal white bars to obscure the applet and eventually components disappear completely. Is there a fix for this? This is a serious problem for us and I would appreciate any help you can give us.
(Review ID: 84912) 
======================================================================

Comments
CONVERTED DATA

BugTraq+ Release Management Values

COMMIT TO FIX:
firefly-pr3

FIXED IN:
firefly-pr3

INTEGRATED IN:
1.3.1
firefly-pr3

VERIFIED IN:
1.3.1_01a
2004-06-14 
WORK AROUND



Name: rlT66838			Date: 06/28/99


none has been found
======================================================================
2004-06-11 
EVALUATION

This bug is caused by the changes in AWT in Java 2. The AWT toolkit thread now runs in a separate thread. This cause problems during scrolling in IE because the repaint is triggered in the main thread, so the repaint is not synchronized and caused scrolling problem.

The solution to this problem is to rewrite the plug-in code in IE so that it will not causes background repaint unnecessary. This bug is now fixed in Firefly.

stanley.ho@Eng 2000-09-20
2000-09-20


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