Make it possible to send events

examples/bar.rs

@@ -4,7 +4,7 @@ use embedded_graphics_simulator::{
     OutputSettingsBuilder, SimulatorDisplay, SimulatorEvent, Window,
 };
 use lvgl::widgets::{Bar, Label};
-use lvgl::{self, Align, Animation, Color, DisplayDriver, Object, Style, UI};
+use lvgl::{self, Align, Animation, Color, DisplayDriver, Event, Object, Style, UI};
 use lvgl_sys;
 use std::sync::{mpsc, Arc, Mutex};
 use std::thread::sleep;
@@ -45,9 +45,9 @@ fn main() -> Result<(), String> {
     loading_lbl.set_text("Loading...");
     loading_lbl.set_align(&mut bar, Align::OutTopMid, 0, -10);
 
-    loading_lbl.on_event(|mut this, event| {
+    loading_lbl.on_event(|_, event| {
         if let lvgl::Event::Clicked = event {
-            this.set_text("Clicked!");
+            println!("Loaded!");
         }
     });
 
@@ -73,6 +73,10 @@ fn main() -> Result<(), String> {
     'running: loop {
         if i > 100 {
             i = 0;
+            threaded_ui
+                .lock()
+                .unwrap()
+                .event_send(&mut loading_lbl, Event::Clicked)
         }
         bar.set_value(i, Animation::OFF);
         i += 1;

lvgl/src/global.rs

@@ -1,4 +1,4 @@
-use crate::{DisplayDriver, Object, ObjectX};
+use crate::{DisplayDriver, Event, Object, ObjectX};
 use alloc::boxed::Box;
 use core::marker::PhantomData;
 use core::ptr;
@@ -54,6 +54,15 @@ impl UI {
         }
     }
 
+    pub fn event_send<T>(&mut self, obj: &mut T, event: Event<T::SpecialEvent>)
+    where
+        T: Object,
+    {
+        unsafe {
+            lvgl_sys::lv_event_send(obj.raw().as_mut(), event.into(), ptr::null_mut());
+        }
+    }
+
     pub fn tick_inc(&mut self, tick_period: Duration) {
         unsafe {
             lvgl_sys::lv_tick_inc(tick_period.as_millis() as u32);

lvgl/src/support.rs

@@ -374,6 +374,24 @@ impl<S> TryFrom<lvgl_sys::lv_event_t> for Event<S> {
     }
 }
 
+impl<S> From<Event<S>> for lvgl_sys::lv_event_t {
+    fn from(event: Event<S>) -> Self {
+        let native_event = match event {
+            Event::Pressed => lvgl_sys::LV_EVENT_PRESSED,
+            Event::Pressing => lvgl_sys::LV_EVENT_PRESSING,
+            Event::PressLost => lvgl_sys::LV_EVENT_PRESS_LOST,
+            Event::ShortClicked => lvgl_sys::LV_EVENT_SHORT_CLICKED,
+            Event::Clicked => lvgl_sys::LV_EVENT_CLICKED,
+            Event::LongPressed => lvgl_sys::LV_EVENT_LONG_PRESSED,
+            Event::LongPressedRepeat => lvgl_sys::LV_EVENT_LONG_PRESSED_REPEAT,
+            Event::Released => lvgl_sys::LV_EVENT_RELEASED,
+            // TODO: handle all types...
+            _ => lvgl_sys::LV_EVENT_CLICKED,
+        };
+        native_event as lvgl_sys::lv_event_t
+    }
+}
+
 /// These events are sent only by pointer-like input devices (E.g. mouse or touchpad)
 pub enum PointerEvent {
     DragBegin,