CODEWITHSUNDEEP
node.jselectron
Joey
Joey

Reputation: 10965

Electron - Get monitor's refresh rate

How can I get the monitor's refresh rate in my electron app?

The electron.screen module provides some info about the display, but not refresh rate. I couldn't find any node packages that do this either.

Upvotes: 0

Views: 568

Answers (1)

unseen_damage
unseen_damage

Reputation: 1376

Untested

For a MAC, What I would probably do is to use a combination of Node, Electron and the command line.

  • First way:

In the main process, I would use the child_process module in NodeJS like so:

const exec = require('child_process').exec;
exec('defaults read /Library/Preferences/com.apple.windowserver.plist', (error, stdout, stderr) => {
  if (error) {
    console.error(`exec error: ${error}`);
    return;
  }
  console.log(`stdout: ${stdout}`);
  console.log(`stderr: ${stderr}`);
});

The exe command gets the monitor information from the OS, and would run when your main process is read.

After that, I would use the Electron screen command screen.getPrimaryDisplay() in the render process (so you can click a button on your view or something) and parse the output of that command for the ID you want.

Send it back to the main process via IPC. If you want all the ID’s then use the getAllDisplays variant.

I would then parse the results from the above exe command,and match the ID’s together to make sure you have what you want. Then, re-run the command to get the refresh rate with your results filtered via GREP/AWK/SED.

  • Second Way:

An alternative would be to use the plist package in Node, and filter the /Library/Preferences/com.apple.windowserver.plist file that way.

Upvotes: 2

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