Add No DPI Scaling as an option

[kiwichick]

Please add No DPI Scaling as an option rather than having to create a shortcut using the -noDpiScaling flag. Using the flag means the exe file can't be used and this can be problematic. For example, my file manager allows scripting so I can create a script where I select an image then click a button and the image folder will open in an image viewer (eg: XnView). But it will only work using the exe file so I can't do it for XnView if I wish to have no scaling.

[XnTriq]

I support kiwichick's (and user0's) request.

For example, in Settings -> Interface:
- add "Enable High DPI Scaling" checkbox (enabled by default)
- add some dropbox with windows scale factors (get currect win value by default)
- etc

Workaround (Windows 10):

1. Quit XnView MP.
2. Copy qt.conf from your XnView MP installation folder to the desktop.
3. Rename the original qt.conf to qt.conf.old.
4. Open the new copy of qt.conf in Notepad.

   Code: Select all

   [Paths]
   Plugins = plugins

5. Add the following lines:

   Code: Select all

   [Platforms]
   WindowsArguments = dpiawareness=0

6. Save qt.conf and move it to your XnView MP installation folder.

   Code: Select all

   [Platforms]
   WindowsArguments = dpiawareness=0
   
   [Paths]
   Plugins = plugins

7. Restart XnView MP.

In addition to that, you might want to enable Zoom on HiDPI screen: 1 image pixel equals 1 screen pixel in Tools → Settings… → View → View.

I'm attaching a test file:

p183782.png

[kiwichick]

I support kiwichick's (and user0's) request.

For example, in Settings -> Interface:
- add "Enable High DPI Scaling" checkbox (enabled by default)
- add some dropbox with windows scale factors (get currect win value by default)
- etc

Workaround (Windows 10):

1. Quit XnView MP.
2. Copy qt.conf from your XnView MP installation folder to the desktop.
3. Rename the original qt.conf to qt.conf.old.
4. Open the new copy of qt.conf in Notepad.

   Code: Select all

   [Paths]
   Plugins = plugins

5. Add the following lines:

   Code: Select all

   [Platforms]
   WindowsArguments = dpiawareness=0

6. Save qt.conf and move it to your XnView MP installation folder.

   Code: Select all

   [Platforms]
   WindowsArguments = dpiawareness=0
   
   [Paths]
   Plugins = plugins

7. Restart XnView MP.

In addition to that, you might want to enable Zoom on HiDPI screen: 1 image pixel equals 1 screen pixel in Tools → Settings… → View → View.

I'm attaching a test file:

p183782.png

Thanks XnTriq, I was hoping the workaround would make the toolbar button icons small (like the -noDpiScaling flag does) but unfortunately it doesn't. It is meant to? That's the only reason I use the flag.

[XnTriq]

Thanks XnTriq, I was hoping the workaround would make the toolbar button icons small (like the -noDpiScaling flag does) but unfortunately it doesn't. It is meant to? That's the only reason I use the flag.

Yes, it definitely should. Is Large icons activated in Tools → Settings… → Interface → ToolBar?

[XnTriq]

Thanks XnTriq, I was hoping the workaround would make the toolbar button icons small (like the -noDpiScaling flag does) but unfortunately it doesn't. It is meant to? That's the only reason I use the flag.

Yes, it definitely should. Is Large icons activated in Tools → Settings… → Interface → ToolBar?

I'm sorry, kiwichick! You are right. Changing dpiawareness=0 does not have the same effect as -noDpiScaling

[kiwichick]

I'm sorry, kiwichick! You are right. Changing dpiawareness=0 does not have the same effect as -noDpiScaling

Thanks for confirming that for me. What a shame. Well, fingers crossed it will be added as a feature at some point

[Ravanelli]

Hi,

I use this "-noDpiScaling" flag as well, but after updating to the latest version, it no longer works.

I hope that you can revert the change, or even better; give us an option in the GUI.

Thanks.

[user0]

I use this "-noDpiScaling" flag as well, but after updating to the latest version, it no longer works.

in Qt6 you can alter scaling via Qt environment variables

• disable scaling
  QT_ENABLE_HIGHDPI_SCALING=0

• use custom scaling
  QT_SCALE_FACTOR=xxx
  
  • calculation
    xxx = desired scale / current windows scale
    
    eg for 150% windows scale it looks like:
    100% - 0.667 (100/150 = 0.667)
    125% - 0.833
    150% - 1.000
    175% - 1.167
    200% - 1.333

it can be:

• permanent
  add User variable
  in Windows Settings > System > About > Advanced system settings > Advanced > Environment Variables

  Code: Select all

  name: QT_ENABLE_HIGHDPI_SCALING
  value: 0

  Code: Select all

  name: QT_SCALE_FACTOR
  value: 0.667
  

• temporary
  make .bat file
  

  Code: Select all

  set QT_ENABLE_HIGHDPI_SCALING=0
  start "" "C:\Program Files\XnViewMP\XnViewMP.exe"
  

  Code: Select all

  set QT_SCALE_FACTOR=0.667
  start "" "C:\Program Files\XnViewMP\XnViewMP.exe"
  

related
Settings - general - add theme management

[Ravanelli]

I use this "-noDpiScaling" flag as well, but after updating to the latest version, it no longer works.

in Qt6 you can alter scaling via Qt environment variables

• disable scaling
  QT_ENABLE_HIGHDPI_SCALING=0

• use custom scaling
  QT_SCALE_FACTOR=xxx
  
  • calculation
    xxx = desired scale / current windows scale
    
    eg for 150% windows scale it looks like:
    100% - 0.667 (100/150 = 0.667)
    125% - 0.833
    150% - 1.000
    175% - 1.167
    200% - 1.333

it can be:

• permanent
  add User variable
  in Windows Settings > System > About > Advanced system settings > Advanced > Environment Variables

  Code: Select all

  name: QT_ENABLE_HIGHDPI_SCALING
  value: 0

  Code: Select all

  name: QT_SCALE_FACTOR
  value: 0.667
  

• temporary
  make .bat file
  

  Code: Select all

  set QT_ENABLE_HIGHDPI_SCALING=0
  start "" "C:\Program Files\XnViewMP\XnViewMP.exe"
  

  Code: Select all

  set QT_SCALE_FACTOR=0.667
  start "" "C:\Program Files\XnViewMP\XnViewMP.exe"
  

related
Settings - general - add theme management

Thanks, I tried it (with different values) but it doesn't have the same effect/look as the flag.