https://bugs.kde.org/show_bug.cgi?id=484303
Bug ID: 484303
Summary: On high DPI screens, text on UI controls is too small
to read
Classification: Applications
Product: okular
Version: 23.08.4
Platform: Microsoft Windows
OS: Microsoft Windows
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: okular-de...@kde.org
Reporter: peter.meilst...@gmail.com
Target Milestone: ---
Created attachment 167637
--> https://bugs.kde.org/attachment.cgi?id=167637&action=edit
Showing too small UI text before and after correction
SUMMARY
On high DPI screens where UI scale is set to 200%, text on UI controls and
popup menus is too small to read.
STEPS TO REPRODUCE
1. Okular 23.08.04 is installed from from the windows store.
2. Using a 4k display, and have Scaling in Windows
Settings>System>Display>Scale is set to 200%.
3. Launch Okular.
OBSERVED RESULT
Labels on buttons/toolbar controls and popup menus is too small to read (see
attached screenshot, upper half.)
EXPECTED RESULT
(see screenshot, lower half)
SOFTWARE/OS VERSIONS
Windows:
Edition Windows 11 Pro
Version 23H2
Installed on 12/8/2023
OS build 22631.3296
Experience Windows Feature Experience Pack 1000.22687.1000.0
Okular: Okular reports its version as 23.08.04, The Windows Store app reports
the installed version as 23.801.1522.0.
ADDITIONAL INFORMATION
I have found a way to correct the issue by manually updating the application
manifest information.
1. Install the Windows SDK. Then locate the program `mt.exe`. On my system it
is located at `C:\Program Files (x86)\Windows
Kits\10\bin\10.0.22621.0\x64\mt.exe`.
2. At an administrator prompt, use `mt.exe` to extract the manifest from the
okular binary. I used the commands:
cd "C:\Program Files\Okular\bin"
"C:\Program Files (x86)\Windows Kits\10\bin\10.0.22621.0\x64\mt.exe"
"-inputresource:okular.exe;#1" -out:okular.manifest
Examine the resulting file `okular manifest`. I found:
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
<security>
<requestedPrivileges>
<requestedExecutionLevel level="asInvoker"
uiAccess="false"></requestedExecutionLevel>
</requestedPrivileges>
</security>
</trustInfo>
</assembly>
3. Edit `okular.manifest` to inludes a dpi awareness setting. After editing,
mine looked like this:
```{html}
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"
xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
<security>
<requestedPrivileges>
<requestedExecutionLevel level="asInvoker"
uiAccess="false"></requestedExecutionLevel>
</requestedPrivileges>
</security>
</trustInfo>
<asmv3:application>
<asmv3:windowsSettings
xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings";>
<dpiAwareness>system</dpiAwareness>
</asmv3:windowsSettings>
</asmv3:application>
</assembly>
```
4. Make a backup of `okular.exe`, then apply the changed manifest back to the
okular binary. I ran:
"C:\Program Files (x86)\Windows Kits\10\bin\10.0.22621.0\x64\mt.exe"
-manifest okular.manifest "-updateresource:okular.exe;#1"
After relaunching Okular, it now shows reasonable font sizes in its UI.
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