Automatic fullscreen when starting from steam (#289)

Cargo.lock

@@ -265,7 +265,7 @@ dependencies = [
 
 [[package]]
 name = "boilr"
-version = "1.7.10"
+version = "1.7.11"
 dependencies = [
  "base64 0.20.0",
  "chrono",

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 edition = "2021"
 name = "boilr"
-version = "1.7.10"
+version = "1.7.11"
 
 [dependencies]
 base64 = "^0.20.0"

flatpak/io.github.philipk.boilr.appdata.xml

@@ -25,6 +25,13 @@ https://hughsie.github.io/oars/index.html
 -->
   <content_rating type="oars-1.1" />
   <releases>
+  <release version="1.7.11" date="2022-12-28">
+      <description>
+        <ul>
+          <li>Automatically go fullscreen when in steam mode</li>
+        </ul>
+      </description>
+    </release>
    <release version="1.7.10" date="2022-12-28">
       <description>
         <ul>

src/ui/uiapp.rs

@@ -353,7 +353,7 @@ pub fn run_sync() {
 pub fn run_ui(args: Vec<String>) {
     let app = MyEguiApp::new();
     let no_v_sync = args.contains(&"--no-vsync".to_string());
-    let fullscreen = args.contains(&"--fullscreen".to_string());
+    let fullscreen = is_fullscreen(&args);
     let native_options = eframe::NativeOptions {
         fullscreen,
         maximized: true,
@@ -371,3 +371,11 @@ pub fn run_ui(args: Vec<String>) {
         }),
     );
 }
+
+fn is_fullscreen(args: &Vec<String>) -> bool {
+    let is_steam_mode = match std::env::var("SteamAppId") {
+        Ok(value) => !value.is_empty(),
+        Err(_) => false,
+    };
+   is_steam_mode || args.contains(&"--fullscreen".to_string())
+}