Disable pinch zoom in webkit (or electron)

UPDATE 2:

Use webFrame.setZoomLevelLimits (v0.31.1+) in render process (Differences Between Main Process and Renderer Process). Because smart zoom on mac still work with document.addEventListener.

Example require('electron').webFrame.setZoomLevelLimits(1, 1)

UPDATE:

deltaY property for pinch zoom has float value, but normal scroll event return int value. Now solution has no problem with ctrl key.

Demo 2.

document.addEventListener('mousewheel', function(e) {
  if(e.deltaY % 1 !== 0) {
    e.preventDefault();
  }
});

Using Chromium monitorEvents(document) I found that is responsible for this event mousewheel. I don’t know, why mousewheel triggered with pinch zoom.
Next step, find difference between normal scroll and pinch zoom.

Pinch zoom has an attribute e.ctrlKey = true, and normal scroll event has e.ctrlKey = false. But if you hold down ctrl key and scroll a page, e.ctrlKey equal true.

I couldn’t find a better solution. 🙁

Demo

document.addEventListener('mousewheel', function(e) {
  if(e.ctrlKey) {
    e.preventDefault();
  }
});