105 lines
3.4 KiB
Rust
105 lines
3.4 KiB
Rust
use core::cell::Cell;
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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::input_device::{BufferStatus, InputData, Pointer};
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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, LvError, Part, State, Widget, UI};
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use std::thread::sleep;
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use std::time::{Duration, Instant};
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fn main() -> Result<(), LvError> {
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let display: SimulatorDisplay<Rgb565> =
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SimulatorDisplay::new(Size::new(lvgl::HOR_RES_MAX, lvgl::VER_RES_MAX));
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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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// Initial state of input
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let latest_touch_status: Cell<BufferStatus> =
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Cell::new(InputData::Touch(Point::new(0, 0)).released().once());
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// Register the input mode
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let mut touch_screen = Pointer::new(|| latest_touch_status.get());
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ui.indev_drv_register(&mut touch_screen)?;
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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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println!("Button received event: {:?}", 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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btn.toggle().unwrap();
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}
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})?;
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let mut loop_started = Instant::now();
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let mut latest_touch_point = Point::new(0, 0);
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'running: loop {
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ui.task_handler();
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window.update(ui.get_display_ref().unwrap());
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let mut events = window.events().peekable();
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if events.peek().is_none() {
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latest_touch_status.replace(
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InputData::Touch(latest_touch_point.clone())
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.released()
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.once(),
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);
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}
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for event in 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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latest_touch_point = point.clone();
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latest_touch_status.replace(InputData::Touch(point).pressed().once());
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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(15));
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ui.tick_inc(loop_started.elapsed());
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loop_started = Instant::now();
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}
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Ok(())
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}
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