Bug 485898

Summary: flicker when reloading PDF, shows logo, a bar is moving
Product: [Applications] okular Reporter: Henning <boredsquirrel>
Component: PDF backendAssignee: Okular developers <okular-devel>
Status: REPORTED ---    
Severity: minor    
Priority: NOR    
Version: 24.02.2   
Target Milestone: ---   
Platform: Flatpak   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: okular reloading a PDF, causing flicker in the UI

Description Henning 2024-04-21 13:36:45 UTC
Created attachment 168744 [details]
okular reloading a PDF, causing flicker in the UI

When using Okular in auto-reload mode (for previewing all sorts of things), it is important that it is smooth and changes as little UI stuff as possible.

This otherwise causes flicker effects.

Currently when reloading:

1. render pdf
2. dont render pdf, blank screen, okular icon is displayed instead (why??), the scroll bar at the right disappears
3. render new pdf

I attach a video of this, using typst in watch mode, creating a PDF. Okular is only involved in rendering and auto reloading the PDF.

okular 24.02.2 Flatpak flathub