Simplify example

examples/button_click.rs

@@ -1,14 +1,15 @@
-use core::cell::Cell;
 use cstr_core::CString;
 use embedded_graphics::pixelcolor::Rgb565;
 use embedded_graphics::prelude::*;
 use embedded_graphics_simulator::{
     OutputSettingsBuilder, SimulatorDisplay, SimulatorEvent, Window,
 };
+
 use lvgl::input_device::{BufferStatus, InputData, Pointer};
 use lvgl::style::Style;
 use lvgl::widgets::{Btn, Label};
 use lvgl::{self, Align, Color, LvError, Part, State, Widget, UI};
+
 use std::thread::sleep;
 use std::time::{Duration, Instant};
 
@@ -25,11 +26,10 @@ fn main() -> Result<(), LvError> {
     ui.disp_drv_register(display)?;
 
     // Define the initial state of your input
-    let latest_touch_status: Cell<BufferStatus> =
-        Cell::new(InputData::Touch(Point::new(0, 0)).released().once());
+    let mut latest_touch_status = InputData::Touch(Point::new(0, 0)).released().once();
 
     // Register a new input device that's capable of reading the current state of the input
-    let mut touch_screen = Pointer::new(|| latest_touch_status.get());
+    let mut touch_screen = Pointer::new(|| latest_touch_status);
     ui.indev_drv_register(&mut touch_screen)?;
 
     // Create screen and widgets
@@ -71,11 +71,9 @@ fn main() -> Result<(), LvError> {
         let mut events = window.events().peekable();
 
         if events.peek().is_none() {
-            latest_touch_status.replace(
-                InputData::Touch(latest_touch_point.clone())
+            latest_touch_status = InputData::Touch(latest_touch_point.clone())
                 .released()
-                    .once(),
-            );
+                .once();
         }
 
         for event in events {
@@ -87,7 +85,7 @@ fn main() -> Result<(), LvError> {
                     println!("Clicked on: {:?}", point);
                     // Send a event to the button directly
                     latest_touch_point = point.clone();
-                    latest_touch_status.replace(InputData::Touch(point).pressed().once());
+                    latest_touch_status = InputData::Touch(point).pressed().once();
                 }
                 SimulatorEvent::Quit => break 'running,
                 _ => {}