OpenCPN Linux TouchScreen

[geoffr]

I have a Rpi4, 64 bit running OpenCPN. It works well except I don't have multitouch working for OpenCPN. For other applications like the web browser it works well (pinch to zoom in/out), but for OpenCPN it doesn't work. How can I get this working?

[geoffr]

Wow, doesn't anyone know?

[capt jgw]

Other than it didn't work on my Pi either, no. After having 3 Pi's fail on me I switched to a regular tablet. Works better and easier setup. Running O, Navionics, and Aquamap, sometimes all at once.

[mgrouch]

Originally Posted by geoffr

Wow, doesn't anyone know?

You can try this distribution for raspberry pi which does a lot to support touchscreen better. It comes
with many Marine oriented programs preinstalled including OpenCPN.

https://github.com/bareboat-necessities/lysmarine_gen

Pinch zoom in OpenCPN doesn’t work due to lack of support of it in WxWidgets library on older gtk.

I’ve was able to make it work with gtk3 and latest WxWidgets by patching OpenCPN and compiling it from source code. however to make it mainstream it has to wait to WxWidgets with multi touch support makes it into official Linux distribution. Debian in case or raspberry pi os.

Thanks,
—MG

[geoffr]

Ok that explains it. I had seen this version, but didn't want to give up all of my set-up I have

I guess I'll download this a see how it goes. - thanks!

[geoffr]

I have just loaded up this version and I still don't have multi-touch (pinch to zoom in/out). The basic touch does work - have I missed something?

[CarCode]

Is it really a good idea to use a touch screen for boat navigation?
For car navigation it might work but at a boat there are other conditions.

[flightlead404]

Originally Posted by CarCode

Is it really a good idea to use a touch screen for boat navigation?
For car navigation it might work but at a boat there are other conditions.

Its probably fine at the nav desk, but probably less fine at the helm where it could be raining/spray and greater motion of both boat and operator.

[flightlead404]

Originally Posted by mgrouch

You can try this distribution for raspberry pi which does a lot to support touchscreen better. It comes
with many Marine oriented programs preinstalled including OpenCPN.

https://github.com/bareboat-necessities/lysmarine_gen

Pinch zoom in OpenCPN doesn’t work due to lack of support of it in WxWidgets library on older gtk.

I’ve was able to make it work with gtk3 and latest WxWidgets by patching OpenCPN and compiling it from source code. however to make it mainstream it has to wait to WxWidgets with multi touch support makes it into official Linux distribution. Debian in case or raspberry pi os.

Thanks,
—MG

can you create a diff or patch file(s) so others can leverage your hacking skills?

maybe even submit to the main project or a fork?

[mgrouch]

Originally Posted by flightlead404

can you create a diff or patch file(s) so others can leverage your hacking skills?



maybe even submit to the main project or a fork?

I did it last fall. See

https://github.com/OpenCPN/OpenCPN/issues/2057

[flightlead404]

Originally Posted by mgrouch

I did it last fall. See

https://github.com/OpenCPN/OpenCPN/issues/2057

cheers mate I'll check it out

[mgrouch]

Originally Posted by flightlead404

cheers mate I'll check it out

2021-09-01 version of BBN Lysmarine OS now supports two finger zoom for OpenCPN too. Three finger scroll is
zoom to cursor. Two finger touch is right click on first touched finger.

See:

https://github.com/bareboat-necessit...ag/v2021-09-01

Thanks,
—MG

[mgrouch]

New release 2022-01-04 of Open-source Bareboat Necessities Marine OS for Raspberry Pi is available for downloads now.

It still includes OpenCPN 5.2.4 because OpenCPN 5.6.0 still doesn’t have all plugins available.

You can upgrade to OpenCPN to 5.6.0 easily with apt install and update all plugins via OCPN plugin manager.

Release notes for this BBN release
and links to Getting Started Guide and download locations:

https://github.com/bareboat-necessit...ag/v2022-01-04

Thanks