A desktop editor for creating mesh gradients in Compose, built with Compose Multiplatform and the Jewel UI standalone toolkit. Gradients are rendered using @sinasamaki's Modifier.meshGradient implementation.

Features and controls

• Grid: Adjust between 2–10 rows and columns, or distribute points evenly.
• Control points: Drag points on the canvas or edit X/Y offsets in the side panel. Double-click the canvas to hide or show points, and toggle edge constraints to lock perimeter points to the canvas bounds.
• Palette: Add hex colors to the saved palette, remove unused ones, and assign colors per point.
• Canvas: Configure canvas dimensions (fixed size or fill) and background color.
• Export: Copy Kotlin code (Pair<Offset, Color> point lists via KotlinPoet) for @sinasamaki's meshGradient modifier, or export a PNG at 1x, 2x, or 3x scale.
• Persistence: Grid state and saved colors autosave locally to a Room/SQLite database.

Roadmap

• Save and load configurations as documents
• Grain overlay
• Configurable gradient resolution
• Presets
• Gradient animation
• Undo/redo

Running and packaging

Run from the command line (or use the .run/desktopApp.run.xml run configuration in IntelliJ IDEA):

./gradlew :composeApp:run

Build an unsigned macOS DMG for local testing:

./gradlew :composeApp:packageDmg

Build a signed and notarized release DMG (see docs/RELEASING.md for signing setup):

./gradlew :composeApp:notarizeDmg

License

Apache 2.0