filedrop

Overview ¶

Example: gogpu/ui — File Drop Demo

Demonstrates OS file drag-and-drop integration with the gogpu/ui widget toolkit. Files dragged from Explorer/Finder/Nautilus are received through the dnd.Manager and displayed as a reactive list.

Key concepts shown:

• dnd.DropTarget registration with hit-testing bounds
• dnd.KindFile + dnd.FilePayload for OS file drops
• state.Signal for reactive UI updates
• primitives.TextFn for computed text display

Architecture:

OS file drop → gogpu.OnDragDrop → desktop.Run bridge → dnd.Manager
→ DropTarget.Drop → Signal update → reactive text display

Rendering: event-driven (default since gogpu v0.43.0). 0% CPU when idle. Redraws only on user interaction or file drop.