Module lvgl 

Safe LVGL v9 wrappers for the oveRTOS Rust SDK.

Provides idiomatic Rust bindings matching the C++ ove::lvgl wrapper:

• Zero-cost abstractions — every widget is Copy + pointer-sized
• Fluent API — method chaining via self -> Self on Copy types
• Trait composition — Layout, Styleable, EventTarget blanket-impl on anything implementing Widget, replacing C++ CRTP mixins
• RAII — LvglGuard for lock/unlock, Style with Drop
• no_std compatible — no allocator needed

Structs

Bar

LVGL bar widget.

Box

Plain container object with scrolling disabled.

Color

RGB888 color matching lv_color_t { blue, green, red } layout.

Label

LVGL label widget.

LvglGuard

RAII guard for the LVGL mutex. Drop calls ove_lvgl_unlock().

Obj

Non-owning handle to an LVGL object (lv_obj_t *).

Style

RAII wrapper around lv_style_t. Calls lv_style_reset on drop.

Constants

ALIGN_CENTER

LVGL alignment constant: center the widget relative to its parent.

ALIGN_TOP_LEFT

LVGL alignment constant: align to the top-left of the parent.

ALIGN_TOP_MID

LVGL alignment constant: align to the top-center of the parent.

PALETTE_BLUE

LVGL palette index for the blue palette family (LV_PALETTE_BLUE).

PART_INDICATOR

LVGL style selector for the indicator part (e.g. bar fill, checkbox mark).

PART_MAIN

LVGL style selector for the main (background) part of a widget.

SIZE_CONTENT

LVGL v9 LV_SIZE_CONTENT — sets widget to size-to-content mode. Computed from: LV_COORD_SET_SPEC(LV_COORD_MAX) where LV_COORD_TYPE_SHIFT = 29, giving ((1<<29)-1) | (1<<29).

Traits

EventTarget

Event callback registration. Uses fn pointers for no_std compatibility. Blanket-implemented for all Widget types.

Layout

Fluent positioning, sizing, and flag manipulation. Blanket-implemented for all Widget types.

Styleable

Fluent inline style setters. Applied to LV_PART_MAIN by default. Blanket-implemented for all Widget types.

Widget

Core trait for all LVGL widget wrappers. Provides access to the raw lv_obj_t pointer. All higher-level traits (Layout, Styleable, EventTarget) are blanket-implemented for any type implementing Widget.

Functions

font_montserrat_14

Safe pointer to lv_font_montserrat_14.

font_montserrat_32

Safe pointer to lv_font_montserrat_32.

handler

Run the LVGL task handler.

hbox

Create a horizontal flex container.

init

Initialize LVGL via ove_lvgl_init().

lock

Acquire the LVGL mutex and return an RAII guard.

screen_active

Get the currently active screen.

tick

Feed LVGL tick counter.

vbox

Create a vertical flex container.