<AWT Dev> [OpenJDK 2D-Dev] [9] Review Request: JDK-8029250 [macosx] There is no tray icon shown in the system tray area when case starts

[Jim Graham]

Hi Petr,

Have you verified that if someone draws an animated GIF and then later 
returns false from the observer that the associated ImageLoader thread 
goes away?  I think the dispose() method had a side effect of allowing 
the thread to go away and if you don't call it then the ImageLoader 
threads that serve the displayers of an animated GIF may run forever 
once triggered...

			...jim

On 12/18/13 6:01 AM, Petr Pchelko wrote:
> Hello, AWT and 2D teams.
>
> Please review the fix for the issue:
> https://bugs.openjdk.java.net/browse/JDK-8029250
> It also resolves the issue:
> https://bugs.openjdk.java.net/browse/JDK-6740321
> The fix is available at:
> http://cr.openjdk.java.net/~pchelko/9/8029250/webrev/
>
> The problem:
> In AWT we use a MediaTracker to wait for the tray icon loading. However, if the TrayIcon is an animated gif the following happen:
> The MediaTracker installs an ImageObserver to an image and starts loading. After the first frame is loaded (and it's really all we need)
> the media tracker correctly exits and removes it's ImageObserver. And as it's the only observer the checkConsumption is called in an
> ImageRepresentation. As the availinfo is just FRAMEBITS the successfully loaded frame was immediately disposed and AWT failed
> to draw a tray icon.
>
> With best regards. Petr.
>