Allow native wayland options to support HiDPI screens that using fractional scaling (snap builds)

[azvyae]

Apparently more people are using larger screen nowadays and they tend to use fractional scaling (especially in wayland). This is what happened when we use electron through xwayland compositor:

Both images are preserving its size and also the screenshot, but the second picture was taken from the 2.5K monitor and appears to be blurred.

Electron on the other hand already supports native wayland settings so can address this issue by providing simple Execute command:

/usr/bin/env ELECTRON_OZONE_PLATFORM_HINT=auto restfox

But because your electron-build config (especially snap) doesn't support wayland, so the command line wouldn't work and triggers segmentation error.

This PR just simply added allowNativeWayland option on snap build so we can activate ELECTRON_OZONE_PLATFORM_HINT env.

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[flawiddsouza]

Hey @azvyae, thanks for the fix. Can you check if this flag can be moved to the electron builder config here?

[flawiddsouza]

@azvyae Just to confirm before the merge. Flag works after moving to package.json right?

[azvyae]

I can open the snap application now when the flag is there, (mentioning that before I added the configuration, it cannot open the app at all and creating a segmentation fault). But I'm currently struggling to serve the UI, running npm run build-snap inside the electron package folder is indeed creating a snap file, but it showing only white screen because UI is missing, probably because the build setup that I did. Am I missing something?

(node:60574) electron: Failed to load URL:
file:https:///snap/restfox/x1/resources/app.asar/ui/index.html with error: ERR_FILE_NOT_FOUND
(Use `restfox --trace-warnings ...` to show where the warning was created)

[flawiddsouza]

To build the ui, use these commands:

cd ui
npm run build-desktop-electron

Then you will be able to see the ui in the built binary. The above needs to be done before building the binary.

[azvyae]

Taken from 2.5K display with 150% fractional scaling on 😁, and seems like there is no blurry problem anymore, to allow the app running on wayland, user should also provide these argument on .desktop launcher.

/usr/bin/env ELECTRON_OZONE_PLATFORM_HINT=auto restfox

Edit: it also appears to be working fine (when the flag is omitted and running in Xwayland or even X11). Here's a bit info on my system if you need that.

You may proceed to merge this PR, thanks.

[flawiddsouza]

Nice. I was going to say setting that env manually seems cumbersome. But it seems it's working without so that's great.

[azvyae]

Actually that env can automatically checks if current display manager is wayland or x11, and will switch to either of two at the runtime, but unfortunately, I don't know where you put the script to generate .desktop file in the snap builds.

[flawiddsouza]

snap install automatically generates it. Not sure if there's a way to modify it.