Messageboxes - notify on mismatched X/Y DPI

[user0]

XnViewMP 1.6.1
Windows11 (22H2), display resolution 3840x2160, dpi scale 150%

Viewer - Messageboxes
sometimes users don't know why their images are displayed stretched/compressed (due to different X/Y DPIs)
[1,2,3,4..]

there are few ways to approach this issue:
- (cosmetic) uncheck 'Adjust zoom if X/Y DPI are different' in Settings OR
- (fix image) equalize image DPIs, eg via 'Set dpi...' dialog

I suppose fixing the image is the right thing to do, as it makes no sense to have photos with different horizontal and vertical DPIs,
eg there are no consumer devices with non-square pixels anymore
thus..

Suggestion

viewer_open_image_with_different_DPI.png (17.87 KiB) Viewed 28 times

• add popup message when opening an image with different X/Y DPIs
  
  • message
    like above
    OR
    "Image has different X/Y DPI and may render distorted.
    Do you want to change DPI?"
  • buttons
    A
    - Yes - open 'Set dpi...' dialog
    - No - close popup
    
    B
    - Yes - change DPI to the max value (image and EXIF (if exists))
    - No - close popup

Related

So it's probably a good idea to show a warning to the user or a message in the status bar in this case.
This warning could have a button to invoke the SET DPI dialog box.

Related

• suggestions
  Messageboxes - notify on incorrect extension
  Messageboxes - notify on mismatched X/Y DPI (current post)
  - done -
  Messageboxes - position - Save session dialog (1.8.7)
  Messageboxes - improve Draw, Catalog dialogs (1.7.0)
  Viewer - deletion routine - add new single dialog for dirty file (1.7.0)
  Messageboxes - unify design (1.6.5)