Grantlee problems

[Lubomir I. Ivanov]

hi Robert,

On 29 July 2015 at 12:05, Robert Helling <helling at lmu.de> wrote:
> Hi,
>
> as I said already on IRC, somehow, on my Mac, grantlee does not fill in the
> template (no dive data is entered). In addition I get some error messages on
> the console which do not tell me a lot and also the data types that come
> with grantlee are also not easy for me to look into with the debugger. Here
> is what happens in detail. I am single stepping through printer.cpp.
>
> In line 87  Grantlee::Template t =
> m_engine->loadByName(PrintOptions->p_template);
>
>
> This produces the error
>
> QObject: Cannot create children for a parent that is in a different thread.
> (Parent is Grantlee::Parser(0x7fff5fbfb8f8), parent's thread is
> QThread(0x104d2da60), current thread is QThread(0x11d4b9240)
> QObject: Cannot create children for a parent that is in a different thread.
> (Parent is Grantlee::Parser(0x7fff5fbfb8f8), parent's thread is
> QThread(0x104d2da60), current thread is QThread(0x11d4b9240)
> QObject::setParent: Cannot set parent, new parent is in a different thread
>
> I don’t know how threads enter here but maybe this is the progress bar? I
> had a similar error before when trying to show a modal dialog from a thread
> that was not the main thread. But this is how far my experience takes me.
>
> Then a bit later, in line 92
>
> htmlContent = t->render(&c);
>
>
> I get the error
> Don't know how to handle metatype
> Don't know how to handle metatype
> Don't know how to handle metatype
> Don't know how to handle metatype
> Don't know how to handle metatype
> Don't know how to handle metatype
> Don't know how to handle metatype
> Don't know how to handle metatype
> Don't know how to handle metatype
> Don't know how to handle metatype
> Don't know how to handle metatype
> Don't know how to handle metatype
>
> Where the number of repeats seems to be somehow related to which dives I try
> to print and how many. Too bad I cannot step into this with the debugger and
> also c fails to give any useful information beyond containing a d_ptr to
> some address.
>
> Then I get a printout but it is just the template without any data filled
> in.
>
> Any ideas how I can proceed from here?
>

that's bad, :-(

i think it throws errors in the parser and there isn't much we can do about it.
what are the exact Qt / Grantlee versions?

for Grantlee we are targeting 5.0.0 as the minimal version.
if you are using homebrew to obtain a somehow older version, try
building from source instead, with something like Qt 5.3.

i doubt it's our code but you can also try commenting out these lines
in qt-ui/printdialog.cpp:
194: connect(printer, SIGNAL(progessUpdated(int)), progressBar,
SLOT(setValue(int)));
206: connect(printer, SIGNAL(progessUpdated(int)), progressBar,
SLOT(setValue(int)));
208: progressBar->setValue(0);
209: disconnect(printer, SIGNAL(progessUpdated(int)), progressBar,
SLOT(setValue(int)));

lubomir
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