<Swing Dev> [9] Review request for 8027639: JComboBox's popup leaves tracks after closing
Alexandr Scherbatiy
alexandr.scherbatiy at oracle.com
Tue Oct 25 11:42:06 UTC 2016
On 10/10/2016 12:55 PM, Semyon Sadetsky wrote:
> Hello,
>
> Please review fix for JDK9:
>
> bug: https://bugs.openjdk.java.net/browse/JDK-8027639
>
> webrev: http://cr.openjdk.java.net/~ssadetsky/8027639/webrev.00/
>
> When the Swing repaint manager paints Swing to a separate off-screen
> buffer the root window is not painted. So in case of non-opaque root
> window having transparent background the repainted buffer area
> transparency is not restored and previously visible Swing components
> can remain visible.
>
> The solution is to paint the root window's background to the repainted
> area in case the root window is non-opaque.
Should the previous composite be restored after the rect filling?
Thanks,
Alexandr.
>
> --Semyon
>
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