drawSigLine should only work if lineWidth>0

[jokeyrhyme]

After every update, I change the drawSigLine function like so:

function drawSigLine() {
if (!settings.lineWidth) { return; }
...
}

That way, I can set the lineWidth to 0 (or false) and turn off the signature line. If you think other people would like to control the presence of the signature line in this way, then it might be a good idea to throw this in.

For my use case (disabled signature line) this is more efficient than picking a transparent colour (or colour that matches the background). It does end up in one more conditional check for everyone who does want the signature line though...

[thomasjbradley]

That sounds good too!