QL-Win / QL-Win/QuickLook

Wrong background color for preview

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#1,391 3 comments 1 reaction 0 assignees View on GitHub

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Dominant language
C#
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Forks
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Avg merge
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Description

Describe the bug
A back background color for a text file preview that is hard to recognize the text

To Reproduce
Steps to reproduce the behavior:

  1. Preview an image image with alpha channel
  2. Navigate to a text file
  3. See a black background color for text preview. (as well as unspported file preview and many others)

Expected behavior
A clear and concise description of what you expected to happen.

normal color for background color
image

Desktop (please complete the following information):

  • OS Version: win 11 pro 23H2
  • QuickLook Version: v3.7.3 from MS store

Screenshots and Exception Log
If applicable, add screenshots and logs to help explain your problem. The log file is located in one of several locations.
image
image

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the issue in QuickLook on Windows 11: preview an image with an alpha channel, then navigate to a text file and an unsupported file. Trace the preview rendering entry point for the black background and confirm that the affected previews use an appropriate normal background color.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
desktop
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
28/100

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