fix(desktop): completely disable pinch to zoom

packages/desktop/src/webview-zoom.ts

@@ -0,0 +1,31 @@
+// Copyright 2019-2024 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+import { invoke } from "@tauri-apps/api/core"
+import { type as ostype } from "@tauri-apps/plugin-os"
+
+const OS_NAME = ostype()
+
+let zoomLevel = 1
+
+const MAX_ZOOM_LEVEL = 10
+const MIN_ZOOM_LEVEL = 0.2
+
+window.addEventListener("keydown", (event) => {
+  if (OS_NAME === "macos" ? event.metaKey : event.ctrlKey) {
+    if (event.key === "-") {
+      zoomLevel -= 0.2
+    } else if (event.key === "=" || event.key === "+") {
+      zoomLevel += 0.2
+    } else if (event.key === "0") {
+      zoomLevel = 1
+    } else {
+      return
+    }
+    zoomLevel = Math.min(Math.max(zoomLevel, MIN_ZOOM_LEVEL), MAX_ZOOM_LEVEL)
+    invoke("plugin:webview|set_webview_zoom", {
+      value: zoomLevel,
+    })
+  }
+})