make win.setAspectRatio() work on Windows / new Electron version

[hhaensel]

A recent patch for Electron makes win.setAspectRatio() work on Windows. This would be very handy to have. The currently used version of Electron is already rather old. Would it be possible to update to the latest version?

Currently I use a js version for a similar task (keep a constant offset of 45 pixels for height with respect to width. I paste it here to document how events can be handled by the ElectronAPI.

using Electron, JSON

win = Window()

# initialise `oldSize` in the app
wsize = ElectronAPI.getSize(win)
run(win.app, "oldSize = $(JSON.json(wsize))")

ElectronAPI.on(win, "resize", JSONText("""function() { 
    win = electron.BrowserWindow.fromId($(win.id))
    newSize = win.getSize()

    if (Math.abs(oldSize[0] - newSize[0]) < 5) {
        height = newSize[1]
        width = height - 45
    } else if (Math.abs(oldSize[1] - newSize[1]) < 5) {
        width = newSize[0]
        height = width + 45
    }

    if (Math.abs(oldSize[0] - newSize[0]) < 3 & Math.abs(oldSize[1] - newSize[1]) < 3) {
        oldSize = newSize
        return
    }

    oldSize = [width, height]
    win.setSize(width, height)    
 }"""))

Resizing with the edge handles doesn't work properly, but side handles work well. I use it in the camera widget app in Stipple (it's listed under broken but works already quite well.) To people not familiar with JSON: JSONText is necessary to have the function pasted as function and not as string.

@davidanthoff Perhaps we can paste a use case of event handling in the docs?