lvgl-rs/examples/simple.rs

52 lines
1.4 KiB
Rust

use embedded_graphics::pixelcolor::Rgb565;
use embedded_graphics::prelude::*;
use embedded_graphics_simulator::{
OutputSettingsBuilder, SimulatorDisplay, SimulatorEvent, Window,
};
use lvgl::widgets::Keyboard;
use lvgl::LvError;
use lvgl::UI;
use std::time::Instant;
fn main() -> Result<(), LvError> {
let display: SimulatorDisplay<Rgb565> =
SimulatorDisplay::new(Size::new(lvgl::HOR_RES_MAX, lvgl::VER_RES_MAX));
let output_settings = OutputSettingsBuilder::new().scale(2).build();
let mut window = Window::new("Simple Example", &output_settings);
// Initialize LVGL
let mut ui = UI::init()?;
// Register your display
ui.disp_drv_register(display)?;
// Get the active screen
let mut screen = ui.scr_act()?;
// Create a Keyboard widget on the screen
let _ = Keyboard::new(&mut screen)?;
let mut loop_started = Instant::now();
'running: loop {
// Tell LVGL to process UI related tasks
ui.task_handler();
// Update your window with the latest display image
window.update(ui.get_display_ref().unwrap());
for event in window.events() {
match event {
SimulatorEvent::Quit => break 'running,
_ => {}
}
}
// Tell LVGL how much time has past since last loop
ui.tick_inc(loop_started.elapsed());
loop_started = Instant::now();
}
Ok(())
}