fix: handle Ctrl++ zoom-in on Windows

.docs/quick-start.md

@@ -4,7 +4,7 @@
 # Development (with hot reload)
 bun run dev
 
-# Desktop development
+# Desktop development (works on Windows too)
 bun run dev:desktop
 
 # Desktop development on an isolated port set
@@ -17,6 +17,9 @@ bun run start
 # Build a shareable macOS .dmg (arm64 by default)
 bun run dist:desktop:dmg
 
+# Build a shareable Windows installer (.exe via NSIS)
+bun run dist:desktop:win
+
 # Or from any project directory after publishing:
 npx t3
 ```

apps/desktop/src/main.ts

@@ -15,6 +15,7 @@ import { NetService } from "@t3tools/shared/Net";
 import { RotatingFileSink } from "@t3tools/shared/logging";
 import { showDesktopConfirmDialog } from "./confirmDialog";
 import { fixPath } from "./fixPath";
+import { isWindowsZoomInShortcut } from "./zoomShortcuts";
 import {
   getAutoUpdateDisabledReason,
   shouldBroadcastDownloadProgress,
@@ -1115,6 +1116,11 @@ function createWindow(): BrowserWindow {
   });
 
   window.webContents.setWindowOpenHandler(() => ({ action: "deny" }));
+  window.webContents.on("before-input-event", (event, input) => {
+    if (!isWindowsZoomInShortcut(input)) return;
+    event.preventDefault();
+    window.webContents.setZoomLevel(window.webContents.getZoomLevel() + 0.5);
+  });
   window.on("page-title-updated", (event) => {
     event.preventDefault();
     window.setTitle(APP_DISPLAY_NAME);

apps/desktop/src/zoomShortcuts.test.ts

@@ -0,0 +1,72 @@
+import { describe, expect, it } from "vitest";
+
+import { isWindowsZoomInShortcut } from "./zoomShortcuts";
+
+describe("isWindowsZoomInShortcut", () => {
+  it("matches Ctrl++ from the main keyboard on Windows", () => {
+    expect(
+      isWindowsZoomInShortcut(
+        {
+          type: "keyDown",
+          control: true,
+          shift: true,
+          key: "+",
+          code: "Equal",
+        },
+        "win32",
+      ),
+    ).toBe(true);
+    expect(
+      isWindowsZoomInShortcut(
+        {
+          type: "keyDown",
+          control: true,
+          shift: true,
+          key: "=",
+          code: "Equal",
+        },
+        "win32",
+      ),
+    ).toBe(true);
+  });
+
+  it("matches Ctrl+numpad plus on Windows", () => {
+    expect(
+      isWindowsZoomInShortcut(
+        {
+          type: "keyDown",
+          control: true,
+          key: "+",
+          code: "NumpadAdd",
+        },
+        "win32",
+      ),
+    ).toBe(true);
+  });
+
+  it("does not match unrelated shortcuts or other platforms", () => {
+    expect(
+      isWindowsZoomInShortcut(
+        {
+          type: "keyDown",
+          control: true,
+          key: "-",
+          code: "Minus",
+        },
+        "win32",
+      ),
+    ).toBe(false);
+    expect(
+      isWindowsZoomInShortcut(
+        {
+          type: "keyDown",
+          control: true,
+          shift: true,
+          key: "+",
+          code: "Equal",
+        },
+        "linux",
+      ),
+    ).toBe(false);
+  });
+});

apps/desktop/src/zoomShortcuts.ts

@@ -0,0 +1,24 @@
+interface ZoomShortcutInput {
+  alt?: boolean;
+  code?: string;
+  control?: boolean;
+  key?: string;
+  meta?: boolean;
+  shift?: boolean;
+  type?: string;
+}
+
+export function isWindowsZoomInShortcut(
+  input: ZoomShortcutInput,
+  platform = process.platform,
+): boolean {
+  if (platform !== "win32") return false;
+  if (input.type !== "keyDown") return false;
+  if (!input.control || input.alt || input.meta) return false;
+
+  return (
+    input.key === "+" ||
+    input.code === "NumpadAdd" ||
+    (input.shift === true && (input.key === "=" || input.code === "Equal"))
+  );
+}