fix: window flashes white for a millisecond before load. tauri-apps/t…

…auri#1564

src-tauri/src/main.rs

@@ -1,6 +1,7 @@
 // Prevents additional console window on Windows in release, DO NOT REMOVE!!
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 
+use tauri::Manager;
 use std::path::PathBuf;
 use rfd::AsyncFileDialog;
 use image::ImageFormat;
@@ -19,6 +20,11 @@ async fn select_image() {
     set_image(&pick_image().await.to_str().unwrap().to_string());
 }
 
+#[tauri::command]
+fn show_window(window: tauri::Window) {
+    window.get_window("main").unwrap().show().unwrap();
+}
+
 fn main() {
     tauri::Builder::default()
         .setup(|app| {
@@ -41,7 +47,7 @@ fn main() {
 
             Ok(())
         })
-        .invoke_handler(tauri::generate_handler![get_image, select_image])
+        .invoke_handler(tauri::generate_handler![get_image, select_image, show_window])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
 }

src-tauri/tauri.conf.json

@@ -83,6 +83,7 @@
         },
         "windows": [
             {
+                "visible": false,
                 "fullscreen": false,
                 "height": 600,
                 "resizable": true,

src/App.tsx

@@ -23,7 +23,7 @@ export default function Home() {
 
     const [image, setImage] = useState<Image | null>(null);
 
-    console.log("jeff");
+    useEffect(() => {invoke("show_window");}, []);
 
     function load_image() {
         if (image_load_called.current == false && image == null && no_image_available == false) {