App window resizing is not working properly

[mmattel]

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Describe the bug

Windows 10x64

Using the recommended scaling (150%)

I cant reduce the size of the app more down as the following:

compared when using 125%

Now this may look identical when comparing the contents of the windows.
But when looking to the absolute window sizes (see images above) this is a huge difference and more than 17%. (125 --> 155)

The impact is, that with 150% (recommended by MS) the screen is more or less blocked by the app window and you cant see other stuff and you cant size it more down.

Note that it necessary to at least make the window shrink vertically more than it does now.
Horizontally you can move the window to get content into the visible area.

I cant imagine that this behaviour is benificial for important customers.

Expected behavior

Ability to further shrink down the app window size making other screen content visible.

Steps to reproduce the issue

No response

Screenshots

No response

Logs

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Client version number

Desktop environment (Linux only)

No response

Client package version and origin (Linux only)

No response

Installation path (Windows only)

C:\Program Files (x86)\ownCloud

Server information

No response

Additional context

No response

[TheOneRing]

Did you restart the client after changes to the scaling?

[mmattel]

I just did the following:

Set "Scale and Layout" to 125% and restarted the app.
The red area cant be shrinked down

Here you can compare the font sizes from the app and the desktop icons. You see that with 125% the font sizes are more or less the same while with 150% the app has a much bigger fontsize compared to the desktop:

125%

150%

After setting "Scale and Layout" back to 150% without touching the app, it looks like that.

When I click on the app, it exploded vertically to a size where the bottom went under the screen and due to its size the Hide button was not accessible anymore. Only by fully closing the app and restarting it, it was fitting into the screen again but in a size as described for 150% on top.

[TheOneRing]

As a workaround for now please set:
In cmd:

set QT_SCALE_FACTOR_ROUNDING_POLICY="Floor"

In powershell:

$env:QT_SCALE_FACTOR_ROUNDING_POLICY="Floor"; 

Works with 3.0 and later.

For development:
https://doc.qt.io/qt-5/qguiapplication.html#highDpiScaleFactorRoundingPolicy
https://doc.qt.io/qt-5/highdpi.html#microsoft-windows

[amrita-shrestha]

Tested

Build : ownCloud 4.0.0.10524-daily20230329 [f5ecc9]

Display resolution 1920 * 999

Set "Scale and Layout" from 100% to 150%

1. without restarting the owncloud app
   

• button buttons are hidden ❓
• can't shrink the app window ❓
• font size looks justified
• activity table left side border line disappears ❓
  

2. restarted the app.
   

• after restarting the app text and icon size shrink a little bit than before ❓
• bottom buttons are visible ✔️
• can shrink ✔️
  
• activity table left side border line disappears ❓
  

Set "Scale and Layout" from 150% to 100%

1. without restarting the owncloud app
   

• can shrink ✔️
• font size looks very small

2. restarted the app

• after restarting the app text and icon size expand a little bit more than before ❓
• can shrink ✔️

cc @TheOneRing

[TheOneRing]

Restarting the app is always required.

• activity table left side border line disappears
  this is expected