sindresorhus/caprine

[Win10] Dark mode issue with OS high contrast mode

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#1,254 opened on Jan 26, 2020

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enhancementhelp wanted

Description

Dark mode toggle not working when high contrast mode is enabled in Windows 10. Using 'High contrast black' theme. Using Caprine 2.43.0, but the issue has been present since autumn or so.

The temporary fix is to: 1: Disable the Windows high contrast mode (ALT+LSHIFT+PRNTSCRN), 2: In Caprine, toggle dark mode off then on 3: Enable high contrast mode in Windows.

When refreshing or restarting Caprine, it goes back to white background and one will need to redo the process to enable dark mode.

Contributor guide

Tech stack
typescript
Domain
desktop
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
CSS stylingElectron basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Investigate how dark mode is implemented in Caprine (likely via CSS class toggling on body). The bug occurs when Windows high contrast mode is active; the dark mode CSS rules are overridden. Look at renderer CSS files (e.g., browser.css) for .dark mode selectors. Review Electron's systemPreferences API for high contrast detection. Consider adding a @media (forced colors: active) query to handle high contrast mode. Test on Windows 10 with high contrast black theme.
[Win10] Dark mode issue with OS high contrast mode · sindresorhus/caprine#1254 | Good First Issue