104 lines
3.2 KiB
Rust
104 lines
3.2 KiB
Rust
use cstr_core::CString;
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use embedded_graphics::pixelcolor::Rgb565;
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use embedded_graphics::prelude::*;
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use embedded_graphics_simulator::{
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OutputSettingsBuilder, SimulatorDisplay, SimulatorEvent, Window,
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};
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use lvgl::style::Style;
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use lvgl::widgets::{Btn, Label};
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use lvgl::{self, Align, Color, Event, LvError, Part, State, Widget, UI};
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use lvgl_sys;
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use std::sync::{mpsc, Arc, Mutex};
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use std::thread::sleep;
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use std::time::Duration;
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fn main() -> Result<(), LvError> {
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let display: SimulatorDisplay<Rgb565> = SimulatorDisplay::new(Size::new(
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lvgl_sys::LV_HOR_RES_MAX,
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lvgl_sys::LV_VER_RES_MAX,
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));
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let output_settings = OutputSettingsBuilder::new().scale(2).build();
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let mut window = Window::new("Bar Example", &output_settings);
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let mut ui = UI::init()?;
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// Implement and register your display:
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ui.disp_drv_register(display)?;
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// Create screen and widgets
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let mut screen = ui.scr_act()?;
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let mut screen_style = Style::default();
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screen_style.set_bg_color(State::DEFAULT, Color::from_rgb((0, 0, 0)));
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screen.add_style(Part::Main, screen_style)?;
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// Create the button
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let mut button = Btn::new(&mut screen)?;
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button.set_align(&mut screen, Align::InLeftMid, 30, 0)?;
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button.set_size(180, 80)?;
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let mut btn_lbl = Label::new(&mut button)?;
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btn_lbl.set_text(CString::new("Click me!").unwrap().as_c_str())?;
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let mut btn_state = false;
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button.on_event(|mut btn, event| {
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if let lvgl::Event::Clicked = event {
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if btn_state {
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let nt = CString::new("Click me!").unwrap();
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btn_lbl.set_text(nt.as_c_str()).unwrap();
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} else {
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let nt = CString::new("Clicked!").unwrap();
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btn_lbl.set_text(nt.as_c_str()).unwrap();
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}
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btn_state = !btn_state;
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println!("Clicked! Inner..");
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btn.toggle().unwrap();
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}
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})?;
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let threaded_ui = Arc::new(Mutex::new(ui));
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let (stop_ch, read_ch) = mpsc::channel();
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let closure_ui = threaded_ui.clone();
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let tick_thr = std::thread::spawn(move || loop {
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let period = Duration::from_millis(5);
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// Needs to be called periodically for LittlevGL internal timing calculations.
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closure_ui.lock().unwrap().tick_inc(period);
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sleep(period);
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if read_ch.try_recv().is_ok() {
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break;
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}
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});
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'running: loop {
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let mut ui = threaded_ui.lock().unwrap();
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ui.task_handler();
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if let Some(disp) = ui.get_display_ref() {
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window.update(disp);
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}
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for event in window.events() {
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match event {
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SimulatorEvent::MouseButtonUp {
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mouse_btn: _,
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point,
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} => {
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println!("Clicked on: {:?}", point);
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// Send a event to the button directly
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ui.event_send(&mut button, Event::Clicked)?;
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}
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SimulatorEvent::Quit => break 'running,
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_ => {}
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}
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}
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sleep(Duration::from_millis(5));
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}
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stop_ch.send(true).unwrap();
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tick_thr.join().unwrap();
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Ok(())
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}
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