agent-joule/crates/gpui/examples

GPUI Examples

Examples can be run from the Joule repository root:

cargo run -p gpui --example hello_world

Where to start

• hello_world shows the basic shape of a GPUI application: create an Application, open a window, create a root view, and render a div.
• input demonstrates text input, focus, selections, clipboard actions, and keyboard bindings.
• uniform_list shows how to render a simple virtualized list.
• testing demonstrates #[gpui::test], TestAppContext, actions, focus, and window-based tests.

Layout and styling

• grid_layout demonstrates CSS-grid-style layout.
• opacity demonstrates opacity styling.
• pattern shows patterned backgrounds.
• shadow demonstrates box shadows.
• text shows styled text rendering.
• text_layout demonstrates text alignment, decoration, weights, and wrapping.
• text_wrapper shows wrapping text content.

Interaction

• anchor demonstrates anchored positioning.
• data_table combines virtualized list rendering with table-style rows and a custom scrollbar.
• drag_drop shows draggable elements and drop targets.
• focus_visible demonstrates keyboard-visible focus styling.
• mouse_pressure demonstrates pressure-sensitive pointer input where supported.
• popover shows floating layers with deferred and anchored.
• scrollable demonstrates scrollable content.
• tab_stop shows keyboard tab navigation.

Images, drawing, and animation

• animation demonstrates GPUI animations and animated SVG transforms.
• gif_viewer shows GIF rendering.
• gradient demonstrates linear gradients and color spaces.
• image shows local and remote image loading, image sizing, and asset setup.
• image_gallery demonstrates image caching and loading remote images.
• image_loading shows image loading states and asset loading.
• painting demonstrates custom drawing with paths and canvas.
• svg shows SVG rendering.

Windows and application behavior

• move_entity_between_windows shows moving an entity between windows.
• on_window_close_quit demonstrates quitting when a window closes.
• set_menus shows application menu setup.
• window demonstrates creating normal, dialog, popup, and floating windows.
• window_positioning demonstrates window bounds and placement.
• window_shadow demonstrates window shadow styling.

Specialized examples

These examples are useful when working on GPUI itself, but they may not be the best starting point for new applications:

• active_state_bug is a focused active-state reproduction.
• layer_shell demonstrates Linux layer-shell windows.
• list_example demonstrates bottom-aligned list state and scrollbar behavior.
• ownership_post supports the ownership and data-flow documentation.
• paths_bench is a path rendering benchmark.
• tree renders a deep tree of nested elements.