Makelore 2.0 initial clean snapshot

electron/main/zoom-shortcuts.ts

@@ -0,0 +1,47 @@
+import type { BrowserWindow } from 'electron';
+
+export type ZoomShortcutAction = 'in' | 'out' | 'reset';
+
+type ZoomShortcutInput = Pick<Electron.Input, 'key' | 'code' | 'control' | 'meta' | 'alt'>;
+
+export function getZoomShortcutAction(input: ZoomShortcutInput): ZoomShortcutAction | null {
+  if ((!input.control && !input.meta) || input.alt) {
+    return null;
+  }
+
+  const key = input.key.toLowerCase();
+
+  if (key === '+' || key === '=' || input.code === 'Equal' || input.code === 'NumpadAdd') {
+    return 'in';
+  }
+
+  if (key === '-' || input.code === 'Minus' || input.code === 'NumpadSubtract') {
+    return 'out';
+  }
+
+  if (key === '0' || input.code === 'Digit0' || input.code === 'Numpad0') {
+    return 'reset';
+  }
+
+  return null;
+}
+
+export function registerZoomShortcuts(win: BrowserWindow): void {
+  win.webContents.on('before-input-event', (event, input) => {
+    const action = getZoomShortcutAction(input);
+
+    if (!action) {
+      return;
+    }
+
+    event.preventDefault();
+
+    if (action === 'reset') {
+      win.webContents.setZoomLevel(0);
+      return;
+    }
+
+    const delta = action === 'in' ? 1 : -1;
+    win.webContents.setZoomLevel(win.webContents.getZoomLevel() + delta);
+  });
+}