Description

jgebal

opened on Jul 14, 2019

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When I run all utPLSQL tests (many of them are running really quickly) I often see that the UI is misbehaving.

• the tests count is flickering
• the progress bar is flickering
• the disabled count sometimes changes into in-progress icon
• the grid looks odd with title bar showing and hiding at the bottom of grid
• the current test name shows in unexpected location (grri header)

I'm not sure if i's related to:

• my graphics card (I'm on NVidia)
• my OS (Win 10 pro x64)
• my SQLDeveloper version (I'm on 18.2)
  
• the speed at which the tests are getting executed and the frame refresh rate in UI.

Maybe it would be possible to change the refresh rate to be say every 10-20ms to avoid excessive UI flickering while maintaining the "realtime" user-experience?

Attached gifs
showing some of the flickering I've encountered.

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1. PhilippSalvisberg commented on Jul 15, 2019

   

   PhilippSalvisberg

   on Jul 15, 2019

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   Thanks @jgebal for reporting this. However, I experience flickering only in the table component. No issues with other components like progress bar or the counters. But I see that this happens for your GIFs while repainting the table component. Maybe this is related to your environment (OS, HW, JDK version, ...). I do not know.

   Nonetheless, an update occurs on every realtime reporter event. It's not based on a timer. Flickering happens as soon as a scroll bar is required for the table component. You should never experience flickering when all tests are visible. On update the scrollRectToVisible method is called for the JTable component. This ensures that the currently executing test is visible. This call is causing the flickering. I have to find out how to avoid flickering while keeping the currently processed test visible.
2. PhilippSalvisberg

   closed this as completedin #75on Jul 15, 2019
3. PhilippSalvisberg

   added a commit that references this issue on Jul 15, 2019

   Merge pull request #75 from PhilippSalvisberg/feature/74_flickering

   b1db361
4. PhilippSalvisberg

   self-assigned this

   on Jul 15, 2019
5. PhilippSalvisberg

   added

   enhancement

   on Jul 15, 2019
6. PhilippSalvisberg

   added this to the v1.1.0 milestone on Jul 15, 2019

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