The lysa.ui sub-module — immediate-mode UI widgets and window management.

Enums & Constants
enum	Alignment
	Constants controlling how a widget is placed inside its parent's content area.

enum	CheckState
	Check/toggle state constants for CheckWidget and ToggleButton.

enum	LineStyle
	Orientation constants for Line widgets.

enum	ProgressBarDisplay
	Optional text display mode drawn over the progress bar.

enum	ProgressBarType
	Orientation constants for ProgressBar widgets.

enum	ResizeableBorder
	Bitmask constants for which borders of a Window can be dragged to resize it.

enum	ScrollBarType
	Orientation constants for ScrollBar widgets.

enum	WidgetType
	Integer constants identifying the concrete type of a widget.

Structures
struct	CheckWidget
	Base class for widgets with a binary checked/unchecked state (e.g. ToggleButton).

struct	Frame
	A bordered panel with a title string rendered in its top border.

struct	Line
	A thin separator line, either horizontal or vertical.

struct	Popup
	A Panel placed at a fixed (x, y) position relative to its parent and always drawn on top of sibling widgets.

struct	TreeViewItem
	A single row in a TreeView, which can contain a child widget and be expanded or collapsed.

struct	UIEvent
	String event-type constants used when subscribing to widget events via EventManager.

struct	ValueSelect
	Base class for widgets that expose a numeric value within a bounded range.

Classes
class	Box
	A Panel with a visible border drawn around its edges.

class	Button
	A push button that fires the OnClick event when pressed and released by the user.

class	HLine
	A horizontal separator line widget.

class	HProgressBar
	A horizontal progress bar (fills left to right).

class	HScrollBar
	A horizontal scroll bar widget.

class	Image
	A widget that displays a GPU image with an optional color tint.

class	List
	Base class for all list-of-widgets widgets. Fires OnInsertItem, OnRemoveItem and OnSelectItem events.

class	ListBox
	A scrollable list of widgets with a selection highlight rectangle. Supports keyboard navigation.

class	Panel
	A rectangular widget that renders only a background fill; no border.

class	ProgressBar
	A rectangular progress bar widget that fills as its value increases.

class	ScrollBar
	A scroll bar widget whose value represents a scroll position within [min, max].

class	ScrollBox
	A scrollable container with horizontal and vertical scroll bars. Add children via add_content.

class	Selection
	A selection highlight rectangle drawn behind the selected item of a ListBox.

class	Text
	A single-line read-only text label.

class	TextEdit
	A single-line editable text input field. Fires OnTextChange and OnTextInput events.

class	ToggleButton
	A button that alternates between checked and unchecked states on each click. Fires OnStateChange on toggle.

class	TreeView
	A hierarchical list widget that displays items in an expandable/collapsible tree structure.

class	VLine
	A vertical separator line widget.

class	VProgressBar
	A vertical progress bar (fills bottom to top).

class	VScrollBar
	A vertical scroll bar widget.

class	Widget
	The base class for all UI widgets. Provides layout, input handling, and child management.

class	Window
	A UI window that owns a root Widget hierarchy and is managed by the WindowManager.

class	WindowManager
	The central manager for all UI windows attached to a rendering target.

Enums & Constants

Structures

Classes