Avoid white flash on launch

src-tauri/capabilities/default.json

@@ -7,7 +7,7 @@
   ],
   "permissions": [
     "core:default",
-    "process:default"
-
+    "process:default",
+    "core:window:allow-show"    
   ]
 }

src-tauri/src/dream_runner.rs

@@ -1,6 +1,5 @@
 use crate::app_settings::SETTINGS;
 use anyhow::{Ok, Result};
-
 /// Displays dreams. Loads settings, creates windows, chooses a dream and runs it.
 
 #[derive(Debug)]
@@ -27,6 +26,7 @@ impl DreamRunner {
                     tauri::WebviewUrl::App("index.html".into()),
                 )
                 .fullscreen(FULLSCREEN)
+                .visible(false)
                 .build()?;
 
                 if need_multiscreen {
@@ -45,6 +45,7 @@ impl DreamRunner {
                             .position(pos.0, pos.1)
                             //.inner_size(size.0, size.1)
                             //.fullscreen(true)
+                            .visible(false)
                             .build()?;
                             secondary_window.set_fullscreen(FULLSCREEN)?;
                         }
@@ -60,6 +61,9 @@ impl DreamRunner {
     }
 }
 
+#[tauri::command]
+fn window_finished_loading() {}
+
 fn compare_monitors(a: &tauri::window::Monitor, b: &tauri::window::Monitor) -> bool {
     a.name() == b.name() && a.position() == b.position() && a.size() == b.size()
 }

src/main.ts

@@ -1,4 +1,6 @@
 import { exit } from '@tauri-apps/plugin-process';
+//import { getCurrentWebviewWindow } from '@tauri-apps/api/webviewWindow';
+import { getCurrentWindow } from "@tauri-apps/api/window";
 
 import { clock } from "./dreams/clocks";
 import { dendraClock } from "./dreams/dendraclock";
@@ -33,6 +35,9 @@ function animate() {
 window.addEventListener("DOMContentLoaded", () => {
   resizeCanvas();
   animate();
+
+  const appWindow = getCurrentWindow();
+  appWindow.show();
 });