lvgl-rs/examples/demo.rs
2021-06-02 15:31:46 +02:00

111 lines
3.3 KiB
Rust

use cstr_core::CString;
use embedded_graphics::pixelcolor::Rgb565;
use embedded_graphics::prelude::*;
use embedded_graphics_simulator::{
OutputSettingsBuilder, SimulatorDisplay, SimulatorEvent, Window,
};
use lvgl;
use lvgl::display::{DefaultDisplay, Display};
use lvgl::style::Style;
use lvgl::widgets::{Label, LabelAlign};
use lvgl::{Align, Color, LvError, Part, State, Widget, UI};
use lvgl_sys;
use parking_lot::Mutex;
use std::sync::Arc as SyncArc;
use std::thread;
use std::thread::sleep;
use std::time::{Duration, Instant};
fn main() -> Result<(), LvError> {
lvgl::init();
let embedded_graphics_display: SimulatorDisplay<Rgb565> = SimulatorDisplay::new(Size::new(
lvgl_sys::LV_HOR_RES_MAX,
lvgl_sys::LV_VER_RES_MAX,
));
let output_settings = OutputSettingsBuilder::new().scale(1).build();
let mut window = Window::new("PineTime", &output_settings);
// Implement and register your display:
let shared_native_display = SyncArc::new(Mutex::new(embedded_graphics_display));
let _display = Display::register_shared(&shared_native_display)?;
// Create screen and widgets
let mut screen = DefaultDisplay::get_scr_act()?;
let mut screen_style = Style::default();
screen_style.set_bg_color(State::DEFAULT, Color::from_rgb((0, 0, 0)));
screen_style.set_radius(State::DEFAULT, 0);
screen.add_style(Part::Main, &mut screen_style)?;
let mut time = Label::from("20:46");
let mut style_time = Style::default();
// style_time.set_text_font(font_noto_sans_numeric_28);
style_time.set_text_color(State::DEFAULT, Color::from_rgb((255, 255, 255)));
time.add_style(Part::Main, &mut style_time)?;
time.set_align(&mut screen, Align::Center, 0, 0)?;
time.set_width(240)?;
time.set_height(240)?;
let mut bt = Label::from("#5794f2 \u{F293}#");
bt.set_width(50)?;
bt.set_height(80)?;
bt.set_recolor(true)?;
bt.set_label_align(LabelAlign::Left)?;
bt.set_align(&mut screen, Align::InTopLeft, 0, 0)?;
let mut power: Label = "#fade2a 20%#".into();
power.set_recolor(true)?;
power.set_width(80)?;
power.set_height(20)?;
power.set_label_align(LabelAlign::Right)?;
power.set_align(&mut screen, Align::InTopRight, 0, 0)?;
// LVGL timer thread
thread::spawn(|| {
let interval = Duration::from_millis(5);
loop {
thread::sleep(interval);
lvgl::tick_inc(interval);
}
});
let mut i = 0;
'running: loop {
if i > 59 {
i = 0;
}
let val = CString::new(format!("21:{:02}", i)).unwrap();
time.set_text(&val)?;
i = 1 + i;
lvgl::task_handler();
{
let native_display = shared_native_display.lock();
window.update(&native_display);
}
for event in window.events() {
match event {
SimulatorEvent::Quit => break 'running,
_ => {}
}
}
sleep(Duration::from_secs(1));
}
Ok(())
}
// Reference to native font for LVGL, defined in the file: "fonts_noto_sans_numeric_80.c"
// TODO: Create a macro for defining a safe wrapper for fonts.
// Maybe sometihng like:
//
// font_declare! {
// NotoSansNumeric80 = noto_sans_numeric_80;
// };
//
extern "C" {
pub static mut noto_sans_numeric_80: lvgl_sys::lv_font_t;
}