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MCU: attempt to support the xpt2046 touch screen

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Still not very well callibrated, but somehow works
This commit is contained in:
Olivier Goffart 2022-01-19 23:21:22 +01:00
parent a746cefb18
commit d9622a9795
3 changed files with 190 additions and 15 deletions
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41
sixtyfps_runtime/rendering_backends/mcu/lib.rs
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@ -40,7 +40,13 @@ mod renderer;
pub trait Devices {
fn screen_size(&self) -> IntSize;
fn fill_region(&mut self, region: IntRect, pixels: &[Rgb888]);
fn read_touch_event(&mut self) -> Option<sixtyfps_corelib::input::MouseEvent> {
None
}
fn debug(&mut self, _: &str);
fn time(&mut self) -> core::time::Duration {
core::time::Duration::ZERO
}
}
impl<T: embedded_graphics::draw_target::DrawTarget> crate::Devices for T
@ -68,12 +74,10 @@ where
fn debug(&mut self, text: &str) {
use embedded_graphics::{
mono_font::{ascii::FONT_6X10, MonoTextStyle},
text::{Alignment, Text},
text::Text,
};
let style = MonoTextStyle::new(&FONT_6X10, Rgb888::RED.into());
Text::with_alignment(text, Point::new(20, 30), style, Alignment::Center)
.draw(self)
.unwrap();
Text::new(text, Point::new(20, 30), style).draw(self).unwrap();
}
}
@ -210,7 +214,7 @@ mod the_backend {
DEVICES.with(|devices| {
let mut devices = devices.borrow_mut();
let devices = devices.as_mut().unwrap();
let size = devices.screen_size();
let size = devices.screen_size().to_f32() / runtime_window.scale_factor();
runtime_window.set_window_item_geometry(size.width as _, size.height as _);
let background =
crate::renderer::to_rgb888_color_discard_alpha(window.background_color.get());
@ -240,6 +244,7 @@ mod the_backend {
Some(McuEvent::Custom(e)) => e(),
Some(McuEvent::Repaint) => {
if let Some(window) = WINDOWS.with(|x| x.borrow().clone()) {
sixtyfps_corelib::animations::update_animations();
self.draw(window)
}
}
@ -247,6 +252,26 @@ mod the_backend {
// TODO: sleep();
}
}
DEVICES.with(|devices| {
let e = devices.borrow_mut().as_mut().unwrap().read_touch_event();
//devices.borrow_mut().as_mut().unwrap().debug(&alloc::format!("EVENT: {:?}", e));
if let Some(mut event) = e {
if let Some(window) = WINDOWS.with(|x| x.borrow().clone()) {
let w = window.self_weak.upgrade().unwrap();
// scale the event by the scale factor:
if let Some(p) = event.pos() {
event.translate(p / w.scale_factor() - p);
}
w.process_mouse_input(event);
}
}
let t = devices.borrow_mut().as_mut().unwrap().time().as_secs();
devices.borrow_mut().as_mut().unwrap().debug(&alloc::format!("{}", t));
});
sixtyfps_corelib::animations::update_animations();
if let Some(window) = WINDOWS.with(|x| x.borrow().clone()) {
self.draw(window)
}
}
}
@ -298,6 +323,10 @@ mod the_backend {
) -> Result<(), Box<dyn std::error::Error>> {
unimplemented!()
}
fn duration_since_start(&'static self) -> core::time::Duration {
DEVICES.with(|devices| devices.borrow_mut().as_mut().unwrap().time())
}
}
}
@ -314,7 +343,7 @@ pub fn init_simulator() {
});
}
pub fn init_with_display<Display: Devices + 'static>(mut display: Display) {
pub fn init_with_display<Display: Devices + 'static>(display: Display) {
DEVICES.with(|d| *d.borrow_mut() = Some(Box::new(display)));
sixtyfps_corelib::backend::instance_or_init(|| {
alloc::boxed::Box::new(the_backend::MCUBackend::default())