Components and themes

R-Ui Lib builds screens from composable components. Add children to a root layout such as Row, Column, Stack, or Grid, then display the root in a UiScreen.

Component families

Family	Examples	Purpose
Layout	Row, Column, Stack, Grid, ScrollView, ClipStack	Position, group, scroll, and clip content
Display	Label, Panel, Card, Divider, ItemCard	Present text, grouped content, and item previews
Controls	Button, IconButton, Toggle, Chip, Tabs, Select, TextField, SearchField, Slider	Let players make choices and enter values
Data and feedback	ItemSlot, InventoryGrid, ProgressBar, Table, Modal, toast notifications	Select items, show data, and communicate results

The exact API is defined by the documented library release. Use that release's public classes and methods.

See one example for every component for focused snippets you can adapt to your screen.

Themes

UiTheme.DARK and UiTheme.LIGHT provide built-in palettes. Set the global default during client initialization:

UiThemes.setGlobalTheme(UiTheme.DARK);

A screen can use its own UiTheme. A custom theme combines a UiPalette of semantic ARGB colors with UiTokens for spacing, dimensions, typography, corner radii, and motion. Components use the active theme unless a component or screen supplies a local override.

Sliders

Sliders support a single handle or an optional range with a lower and upper value. Values are clamped and snapped to the configured step; range handles cannot cross. The focused handle can be changed with Space, and keyboard controls adjust its value.

Item filters

ItemSlot holds a one-item reference and can be cleared. JEI integration is optional. InventoryGrid.playerInventory() displays the player's inventory and hotbar; custom containers can use InventoryGrid too. In custom interaction mode, the consumer handles writes and server synchronization.