From efe1d21b0e1ee79ef7547c0d8524a39be16ccc7d Mon Sep 17 00:00:00 2001
From: Ben Bridle <ben@derelict.engineering>
Date: Wed, 31 Jul 2024 16:05:57 +1200
Subject: Implement fullscreen

Program windows can choose to show as fullscreen or windowed.
---
 src/window.rs | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'src/window.rs')

diff --git a/src/window.rs b/src/window.rs
index 1949387..882d0b8 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -3,7 +3,7 @@ use crate::*;
 use buffer::HasDimensions;
 use winit::dpi::{Size, PhysicalSize};
 use winit::event_loop::EventLoopWindowTarget;
-use winit::window::WindowId;
+use winit::window::{Fullscreen, WindowId};
 
 pub struct Window {
     pub controller: Box<dyn WindowController>,
@@ -86,6 +86,19 @@ impl Window {
     /// alter any buffer sizes or struct fields. When the window size eventually
     /// changes, the state updates are handled by `resize_buffer_and_surface`.
     pub fn update_window_size(&mut self) {
+        let fullscreen = self.controller.fullscreen();
+        if fullscreen != self.window.fullscreen().is_some() {
+            if fullscreen {
+                if let Some(monitor) = self.window.current_monitor() {
+                    if let Some(mode) = monitor.video_modes().nth(0) {
+                        self.window.set_fullscreen(Some(Fullscreen::Exclusive(mode)));
+                    }
+                };
+            } else {
+                self.window.set_fullscreen(None);
+            }
+        }
+
         let pixel_scale = self.controller.pixel_scale().get();
         if let Some(dimensions) = self.controller.exact_size() {
             // Without this early return, the constant re-setting of the window
-- 
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