Re: [Denemo-devel] PNG selection export (was Re: Beginner questions (cross-staff, PNG selection export, feathered beams, batch export, Print View behaviour))

[Lib Lists]

On Fri, 16 Aug 2019 at 10:15, Richard Shann <address@hidden> wrote:
>
> On Fri, 2019-08-16 at 09:47 +0200, Lib Lists wrote:
> > On Thu, 15 Aug 2019 at 12:59, Richard Shann <address@hidden>
> > wrote:
> > >
> > > On Tue, 2019-08-13 at 10:56 +0200, Lib Lists wrote:
> > > > > > Hi, writing in a terminal '/PATH/TO/Preview somefile.png'
> > > > > > doesn't
> > > > > > work. However, 'open -a  /PATH/TO/Preview somefile.png' works
> > > > > > as
> > > > > > well
> > > > > > as 'open somefile.png'.
> > > > >
> > > > > In that case you may be able to set the Image Viewer field to
> > > > > "open"
> > > > > without the quotes
> > > > > and it may work. (I'm hoping there is an executable named
> > > > > "open"
> > > > > that
> > > > > takes a filename as a parameter and decides what to do with it)
> > > > >
> > > >
> > > > Hi, I tried but it doesn't work, same result as before. I tried
> > > > 'open', 'open -a PATH/TO/Preview'. Here the
> > > > man page for 'open'
> > > > https://ss64.com/osx/open.html. In the preferences I also setup
> > > > an
> > > > internet browser ('PATH/TO/Safari) and I found a problem: Safari
> > > > correctly opens, but the address to the file (the help file in
> > > > this
> > > > case) is written as:
> > > > file:///file:/Applications/Denemo.app/Contents/Resources/share/de
> > > > nemo
> > > > /manual/denemo-manual.html
> > > > with the double 'file' bit at the beginning. Maybe related with
> > > > the
> > > > problem with Preview?
> > >
> > > Well, this sounds like it is not difficult to fix: Denemo is
> > > successfully launching the executable program, but the programs
> > > launched are failing to pick up and use the parameter
> > > appropriately. In
> > > the case of Safari it is taking the parameter to be a file name and
> > > prefixing file:/// to it while how the "open" thing is failing is
> > > less
> > > clear, as the man page you quote indicates that calling it with a
> > > pdf
> > > filename as parameter should work. Setting the field to 'open -a
> > > PATH/TO/Preview' would *not* work, as it would try to execute a
> > > program
> > > named 'open -a PATH/TO/Preview' which doesn't exist.
> > > So the easy fix is to create a script that calls the program you
> > > want
> > > to call with the correct parameter. On Unix you would write a file
> > > containing something like
> > >
> > > 8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8
> > > ><
> > > #!/bin/bash
> > >
> > > echo Opening $1 as png using the command: open -a
> > > /PATH/TO/Preview $1
> > >
> > > open -a /PATH/TO/Preview $1
> > >
> > > 8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8
> > > ><
> > >
> > > you would put this into a file, say myopen.sh and make it
> > > executable
> > > chmod a+x myopen.sh
> > >
> > > You could use any other scripting language to take the file name as
> > > provided by Denemo and invoke your display program.
> >
> > Hi Richard,
> > thank you, but unfortunately it didn't work. I get the same result as
> > before (pop-up saying 'Your PNG file has now been created).
>
> But the difference now is that you should get a message on the terminal
> saying
>
> Opening $1 as png using the command: open -a /PATH/TO/Preview $1
>
> where $1 is replaced by the actual parameter it is receiving.
> Indeed, as your first test, invoke myopen.sh directly from the command
> line
>
> /PATH/TO/myopen.sh mypicture.png
>
> where mypicture.png is some .png image.
>
> It should print
>
> Opening mypicture.png as png using the command: open -a /PATH/TO/Preview 
> mypicture.png
>
> (where, of course, /PATH/TO is not literal but means that you write the
> path to the appropriate executable) and proceed to display your png.
>
> Once you have an executable script that does display your png as you
> want it then I can't imagine the circumstance where the executable
> script is launched from within the Denemo process and fails (well, you
> could have an out-of-memory error ...)
>
> Once you have the echo message from the myopen.sh saying what the
> command it is issuing is you can then check that the file does in fact
> exist and is a .png image ... indeed you can simply repeat the command
> that myopen.sh is telling you directly on the command line to check
> that it is working. (Possible snags could include unusual characters in
> the file name(*) - some operating systems have restrictions and some
> characters such as spaces cause parsing problems).
> HTH
> Richard
> (*) so test with a file named something simple, like "junk.denemo"


Hi,
thanks for your help.
if I launch the script from the terminal it works (as in your example
open -a /PATH/TO/Preview mypicture.png). However, when I launch the
script from Denemo (I put the full path of the script in the Image
Viewer field) nothing happens, i.e. I don't see the echo message on
the terminal and the same pop-up window.
To double check, I'm selecting some music and then 'Export Selection as PNG'.

Lib