remove pixels, add softbuffer for drawing to window

src/gui_window.rs

@@ -0,0 +1,46 @@
+use softbuffer::Buffer;
+use std::{num::NonZero, rc::Rc};
+use winit::{dpi::LogicalSize, event_loop::ActiveEventLoop, window::Window};
+
+type Context = softbuffer::Context<Rc<Window>>;
+type Surface = softbuffer::Surface<Rc<Window>, Rc<Window>>;
+
+pub struct GuiWindow {
+    winit_window: Rc<Window>,
+    surface: Surface,
+}
+
+impl GuiWindow {
+    pub fn new(
+        event_loop: &ActiveEventLoop,
+        logical_size: LogicalSize<u16>,
+    ) -> GuiWindow {
+        let attributes = Window::default_attributes()
+            .with_title("servicepoint-simulator")
+            .with_min_inner_size(logical_size)
+            .with_inner_size(logical_size)
+            .with_transparent(false);
+        let winit_window =
+            Rc::new(event_loop.create_window(attributes).unwrap());
+        let context = Context::new(winit_window.clone()).unwrap();
+        let mut surface = Surface::new(&context, winit_window.clone()).unwrap();
+        surface
+            .resize(
+                NonZero::new(logical_size.width as u32).unwrap(),
+                NonZero::new(logical_size.height as u32).unwrap(),
+            )
+            .unwrap();
+
+        Self {
+            winit_window,
+            surface,
+        }
+    }
+
+    pub fn get_buffer(&mut self) -> Buffer<Rc<Window>, Rc<Window>> {
+        self.surface.buffer_mut().unwrap()
+    }
+    pub(crate) fn request_redraw(&self) {
+        self.winit_window.request_redraw();
+    }
+}