OCRDesktop does not work on Wayland

[francescotissera1211]

Tested this on ArchLinux with kde Plasma 5.27.6, wayland session. OCRDesktop does not work under Wayland.

Steps to reproduce:

1. log in to a Wayland session.
2. open a terminal and try the command: "ocrdesktop"
3. the command will throw an error that I can't copy paste for some reason, but you'll get it none the less.

Expected results: OCRDesktop should work under Wayland as well, giving the user more flexibility of choice when it comes to display server.

Actual results: the program does not work under Wayland at all.

[ayushh2k]

(ocrdesktop:164631): Wnck-WARNING **: 16:55:54.496: libwnck is designed to work in X11 only, no valid display found [1] 164631 segmentation fault (core dumped) ocrdesktop

This is the error message

[chrys87]

Howdy,

for wayward does currently no API equivalent to libwnck exist. Its used to get window size and position.

you might want to try -d parameter, it dors screenshot the ehole desktop instead the current window, so libwnck is not involved there. You might get better results in fullscreen the window you wanna OCR first.

cheers chrys

[ayushh2k]

is it possible to feed ocrdesktop a region of the screen using slurp, that might resolve the window size and position problem

[chrys87]

Howdy,

sure, you can pass almost any image file or pdf using -f filename parameter

ocrdesktop -f /home/user/screenshot.png

but you can’t interact with the window then using the mouse emulation. OCRdesktop know than the imagedata of the window but not where it is located on screen.

[chrys87]

Well if you find a way to get the window position, i can add a parameter to pass this values to OCRdesktop and activate mouse emulation with this information to be able to emulate clicks on right position.

[chrys87]

well, in the meantime pipewire comes into plan. maybe we can resolve this issue asking pipewire for the screen content.

[ayushh2k]

sure, i've been using normcap recently and it does the job for wayland