Bug 506108

Summary:	Levels filter layer displays no histogram until added to the layer stack
Product:	[Applications] krita	Reporter:	Noel Santos <noel>
Component:	Filter Layers	Assignee:	Krita Bugs <krita-bugs-null>
Status:	RESOLVED FIXED
Severity:	minor	CC:	emmetoneill.pdx
Priority:	NOR
Version First Reported In:	5.2.9
Target Milestone:	---
Platform:	Appimage
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Noel Santos 2025-06-24 13:35:10 UTC

SUMMARY

When adding a levels filter layer, no histogram is shown in the dialog during creation. After it has been added, clicking on properties to re-show the dialog displays the histogram.

STEPS TO REPRODUCE
1. Open a photo in Krita.
2. Add a filter layer and select Adjust -> Levels.

OBSERVED RESULT

No histogram.

EXPECTED RESULT

Histogram.

SOFTWARE/OS VERSIONS

I'm on Linux Mint.

ADDITIONAL INFORMATION

Filter masks aren't affected by this bug.

An August 2024 thread exists reporting this issue. https://krita-artists.org/t/histogram-not-showing-during-filter-creation/99235/

Comment 1 Emmet O'Neill 2025-11-14 23:31:56 UTC

Bug fixed by Stuffins, reviewed by me.
Commit d4d156d03344a7267e98d30a6e8749c97dea3ac9 @ git master.

No bug number in the commit message, so I'm closing this the old fashioned way.
(Writing this while waiting for the CI pipeline to auto-merge the MR, then we need to cherry-pick.)