Add button to zoom document to real size

[josephabbey]

I have added a button to the Canvas Menu that zooms the document to its real life size based on the reported size of the display.

You may wish to change the icon (I made it myself :)), it is a bit rough and ready.

Thanks for your work, what a great project.

[flxzt]

Thank you for this contribution! I adjusted the symbolic icon a little bit to match the style of others.

[Kneemund]

Very cool. I'm not sure if these EDID shenanigans could come to haunt us here, but I don't have any TVs/potentially non-conforming displays to test it with. To me, it seems rare enough that we don't need to worry about this for now

[josephabbey]

Very cool. I'm not sure if these EDID shenanigans could come to haunt us here, but I don't have any TVs/potentially non-conforming displays to test it with. To me, it seems rare enough that we don't need to worry about this for now

Yes, I was thinking about this when I was working on the feature, especially because my secondary display goes through USB to Display-port to HDMI conversion which could have caused problems, but both of my displays reported correctly(ish +/- a few mm).

My thought was if people don't have the correct PPI, they can ignore it; or if it is common we could add a way to override the display PPI in the settings.