Copyq: Latest version doesn't support retina display on macOS

[RoadToDream]

Describe the bug
Latest version doesn't support retina display on macOS.

Screenshots
Version 3.8

Version 3.7.2

Version, OS and Environment
CopyQ Clipboard Manager v3.8.0-osx
Qt: 5.12.2
Compiler: GCC
Arch: x86_64-little_endian-lp64
OS: macOS Mojave (10.14)

Additional context
Add any other context about the problem here.

[hluk]

That's odd, why is even the window title pixelated?

Can you provide copyq version for the 3.7.2 version? Maybe it's because it uses different Qt version.

[RoadToDream]

Hi! Here is the output,
CopyQ Clipboard Manager v3.7.2
Qt: 5.12.0
Compiler: GCC
Arch: x86_64-little_endian-lp64
OS: macOS 10.14

Maybe Info.plist is not correctly generated?

[hluk]

Maybe Info.plist is not correctly generated?

Can you check the differences? Maybe some libraries, plugins or other files are missing.

Note: Between versions 3.7.3 (build log) and 3.8.0 (build log) the build system was changed (from qmake to CMake+CPack).

[RoadToDream]

Seems like that there isn't anything missed, maybe qt's compatibility issues?

[hluk]

Thanks for the screenshot.

It's probably unrelated, but the new libs in v3.8.0 aren't really required by CopyQ - not sure why they are included in the package.

Can you check if there are any problems in log (F12 shortcut from the main window)?

You can also try forcing the scaling with following commands.

QT_SCALE_FACTOR=1 QT_SCREEN_SCALE_FACTORS=2 copyq
# or
QT_SCALE_FACTOR=2 copyq

[RoadToDream]

It doesn't fix this issue, just double sized the window.

That's really a weird problem, does it only occurs on my computer? Seems like it's my system's fault.

[hluk]

Unfortunately, I cannot test it on macOS. It could be issue in the new Qt version but I fail to find a similar bug.

[RoadToDream]

Thanks a a lot for your patience! I'll go back to version 3.7. Maybe a fix in QT will repair this issue.

[hluk]

I've fixed it by adding following code to Info.plist in the bundle.

       <key>NSPrincipalClass</key>
       <string>NSApplication</string>
       <key>NSHighResolutionCapable</key>
       <string>True</string>

Still not sure why this does not work out-of-the-box.

[hluk]

CopyQ v3.9.0, with the fix for retina displays, is available on github and via Homebrew.

[RoadToDream]

So still a plist issue, but this item is really weird, never seen it before.
Great hack!