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Code Issues 5.9k Packages Projects Releases 19 Wiki Activity

[PR #4879] feat: add theme hot-reload functionality #11152

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opened 2026-02-16 18:15:57 -05:00 by yindo · 0 comments
yindo commented 2026-02-16 18:15:57 -05:00
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Original Pull Request: https://github.com/anomalyco/opencode/pull/4879

State: open
Merged: No

Summary

Adds the ability to reload themes without restarting opencode. Provides multiple reload triggers to support different workflows:

Trigger Use Case
/reload-theme command Manual reload when needed
File watchers Auto-reload on config/theme file edits
Window resize Re-detect terminal colors for "system" theme
SIGUSR1/SIGUSR2 Integration point for external automation

Also makes "system" theme background transparent to support terminal opacity.

Changes

 theme.tsx        | +178  Core: reloadTheme(), file watchers, signal handlers
 app.tsx          | -66/+9  Moved getTerminalBackgroundColor, added command
 autocomplete.tsx | +5     Added /reload-theme slash command

Architecture

flowchart LR
    subgraph Triggers
        A[Command]
        B[File change]
        C[Resize]
        D[Signal]
    end

    A & B & C & D --> E[reloadTheme]
    E --> F[Re-query colors]
    F --> G[Update store]
    G --> H[UI re-renders]

Key Decisions

Why move getTerminalBackgroundColor to theme.tsx?
Needed by both initial detection (app.tsx) and reload (theme.tsx). Moving it eliminates duplication.

Why fs.watch() instead of @parcel/watcher?
Simpler API, no extra dependencies, sufficient for watching 2 files.

Why transparent background for "system" theme?
Allows terminal opacity/blur to show through while keeping panel/menu backgrounds solid.

Why SIGWINCH handler?
Event-driven color re-detection without polling. Only active for "system" theme.

Testing

# Command
/reload-theme

# File watcher
echo '{"theme":"dracula"}' > ~/.config/opencode/opencode.json

# Signal (Unix)
kill -USR1 $(pgrep opencode)

# Resize (system theme)
# Change terminal colors, then resize window

Checklist

  • Commands work (palette + slash)
  • File watchers trigger reload
  • Signal handlers work (Unix)
  • Proper cleanup on unmount
  • TypeScript passes
  • Follows AGENTS.md style

Fixes #815

**Original Pull Request:** https://github.com/anomalyco/opencode/pull/4879 **State:** open **Merged:** No --- ## Summary Adds the ability to reload themes without restarting opencode. Provides multiple reload triggers to support different workflows: | Trigger | Use Case | | ----------------------- | -------------------------------------------- | | `/reload-theme` command | Manual reload when needed | | File watchers | Auto-reload on config/theme file edits | | Window resize | Re-detect terminal colors for "system" theme | | SIGUSR1/SIGUSR2 | Integration point for external automation | Also makes "system" theme background transparent to support terminal opacity. ## Changes ``` theme.tsx | +178 Core: reloadTheme(), file watchers, signal handlers app.tsx | -66/+9 Moved getTerminalBackgroundColor, added command autocomplete.tsx | +5 Added /reload-theme slash command ``` ### Architecture ```mermaid flowchart LR subgraph Triggers A[Command] B[File change] C[Resize] D[Signal] end A & B & C & D --> E[reloadTheme] E --> F[Re-query colors] F --> G[Update store] G --> H[UI re-renders] ``` ## Key Decisions **Why move `getTerminalBackgroundColor` to theme.tsx?** Needed by both initial detection (app.tsx) and reload (theme.tsx). Moving it eliminates duplication. **Why `fs.watch()` instead of `@parcel/watcher`?** Simpler API, no extra dependencies, sufficient for watching 2 files. **Why transparent background for "system" theme?** Allows terminal opacity/blur to show through while keeping panel/menu backgrounds solid. **Why SIGWINCH handler?** Event-driven color re-detection without polling. Only active for "system" theme. ## Testing ```bash # Command /reload-theme # File watcher echo '{"theme":"dracula"}' > ~/.config/opencode/opencode.json # Signal (Unix) kill -USR1 $(pgrep opencode) # Resize (system theme) # Change terminal colors, then resize window ``` ## Checklist - [x] Commands work (palette + slash) - [x] File watchers trigger reload - [x] Signal handlers work (Unix) - [x] Proper cleanup on unmount - [x] TypeScript passes - [x] Follows AGENTS.md style Fixes #815
yindo added the pull-request label 2026-02-16 18:15:57 -05:00
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Reference: anomalyco/opencode#11152
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