noizapp/preload.js

const { ipcRenderer } = require('electron');

document.addEventListener('keydown', (e) => {
  if (!e.ctrlKey) return;
  switch (e.key) {
    case '=':
    case '+':
      e.preventDefault();
      ipcRenderer.send('zoom-in');
      break;
    case '-':
      e.preventDefault();
      ipcRenderer.send('zoom-out');
      break;
    case '0':
      e.preventDefault();
      ipcRenderer.send('zoom-reset');
      break;
  }
});

document.addEventListener('wheel', (e) => {
  if (!e.ctrlKey) return;
  e.preventDefault();
  if (e.deltaY < 0) {
    ipcRenderer.send('zoom-in');
  } else if (e.deltaY > 0) {
    ipcRenderer.send('zoom-out');
  }
}, { passive: false });