JDK-4289849 : Improved Scrolling
  • Type: Enhancement
  • Component: client-libs
  • Sub-Component: java.awt
  • Affected Version: 1.4.0
  • Priority: P3
  • Status: Closed
  • Resolution: Duplicate
  • OS: generic
  • CPU: generic
  • Submitted: 1999-11-10
  • Updated: 2000-05-19
  • Resolved: 2000-05-19
Related Reports
Duplicate :  
JDK-4285182 - Improved scrolling
Description

Name: lb39792			Date: 11/10/99



Swing has made major improvements in scrolling for Kestrel.  
However, the improved scrolling algorithms fail under some conditions.  
This causes the viewport to be forced back to a very conservative slow 
mechanism.  

The problems lie in the AWT Graphics.copyArea()
method, and how it produces update events asynchronously.  If a
new version of this method were provided then the Swing viewport
could be modified to be even more efficient.
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Comments
EVALUATION I spoke to Jim Graham about this and we agreed that the best way to fix this is to implement Graphics.scroll(). Since there is already a similar RFE for this filed against 2D, I'm not going to reassign this bug for now. That way, if AWT has to do any work to implement this, we will have a BugId for it. I don't anticipate that we will need to do any work ourselves, however. david.mendenhall@eng 1999-12-14 Committing to fix in Merlin so we can track this RFE. eric.hawkes@eng 2000-02-12 The 2D RFE is 4285182. eric.hawkes@eng 2000-04-05 Steve Wilson has asked me to mark this bug as a dup of 42855182 and assign that bug to him. jeannette.hung@Eng 2000-05-19
12-02-2000