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Error printing A3 paper format

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mickele

Jun 21, 2011; 8:39pm

Error printing A3 paper format

On my system (archlinux x86_64, LANG set to it_IT.utf8), if I choose a paper format different from A4, preview is right, but if I print on PDF, LibreCAD prints on A4 format.
Do you have any idea about possible causes?

R. van Twisk

Jun 21, 2011; 8:52pm

Re: Error printing A3 paper format

Administrator

Mickele,

are you sure that ypur printer driver doesn't scale it back?

I will try this a bit later today and see what happens.

Ries

On Jun 21, 2011, at 3:39 PM, mickele [via LibreCAD] wrote:

On my system (archlinux x86_64, LANG set to it_IT.utf8), if I choose a paper format different from A4, preview is right, but if I print on PDF, LibreCAD prints on A4 format.
Do you have any idea about possible causes?

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R. van Twisk

Jun 22, 2011; 11:24pm

Re: Error printing A3 paper format

Administrator

In reply to this post by mickele

Mickele,

i have been looking into this. And for me it happens aswell. This is because my printer (Epson scanner thingy) doesn't support. So the dialog goes back to something that's valid.

However, when I set the dropdown to A3 I can perfectly print on A3.

I will push a couple of updates regarding this, mainly to get rid of some q3support related items.

Ries

mickele

Jun 26, 2011; 2:29pm

Re: Error printing A3 paper format

Thanks for your help.
I updated librecad from git, but I still have the same problem.
Also if I print on file, drawing is cut to A4 format.

mickele

mickele

Jun 27, 2011; 7:54pm

Re: Error printing A3 paper format

Problem seems caused by Qt.
Method QPrinter::setPaperSize() doesn't work when printing on PDF (see qprinter.cpp).
Quite strange...

R. van Twisk

Jun 27, 2011; 8:10pm

Re: Error printing A3 paper format

Administrator

Mickele,

where exactly do you see this in qprinter.cpp?

Ries

On Jun 27, 2011, at 2:54 PM, mickele [via LibreCAD] wrote:

Problem seems caused by Qt.
Method QPrinter::setPaperSize() doesn't work when printing on PDF (see qprinter.cpp).
Quite strange...

If you reply to this email, your message will be added to the discussion below:
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mickele

Jun 27, 2011; 8:13pm

Re: Error printing A3 paper format

Line 1136 in

http://www.qt.gitorious.org/+wkhtml2pdf/qt/wkhtmltopdf-qt/blobs/076c6564fb466aa28b485bd927ac7fd0449097fd/src/gui/painting/qprinter.cpp

R. van Twisk

Jun 27, 2011; 8:17pm

Re: Error printing A3 paper format

Administrator

Mickele,

that macro points to:

#define ABORT_IF_ACTIVE(location) \

if (d->printEngine->printerState() == QPrinter::Active) { \

qWarning("%s: Cannot be changed while printer is active", location); \

return; \

}

So I think as long as the printer is not active,

I should beable to set the paper size.

Ries

On Jun 27, 2011, at 3:13 PM, mickele [via LibreCAD] wrote:

Line 1136 in

http://www.qt.gitorious.org/+wkhtml2pdf/qt/wkhtmltopdf-qt/blobs/076c6564fb466aa28b485bd927ac7fd0449097fd/src/gui/painting/qprinter.cpp

If you reply to this email, your message will be added to the discussion below:
http://librecad.1049103.n5.nabble.com/Error-printing-A3-paper-format-tp4511915p4529662.html

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mickele

Jun 27, 2011; 8:35pm

Re: Error printing A3 paper format

Yes, you're right.
However the problem is in Qt. I wrote a simple program that prints a word on an A3 paper.
On other system (e.g. windows) everything works fine, on my archlinux 64 bit it creates an A4.
Here's some code:

QPrinter * printer = new QPrinter();
printer->setPaperSize( QPrinter::A3 );
qWarning("before: %d", printer->paperSize() );

// it prints 8, the right value

if( printer->isValid() ){
QPrintDialog * dialog = new QPrintDialog( printer, this );

// I set pdf as printer, but I don't change the paper size

if( dialog->exec() == QDialog::Accepted ){
printer->setPaperSize( QPrinter::A3 );
qWarning("after: %d", printer->paperSize() );

// it prints 0, A4 format

QTextDocument doc;
doc.setPlainText( trUtf8("bye") );
doc.print( printer );
}
}
delete printer;

This can be a bug in qt-4.7.3 or a bug in qt package available on archlinux.

maqifrnswa

Jun 27, 2011; 10:22pm

Re: Error printing A3 paper format

On Mon, Jun 27, 2011 at 4:35 PM, mickele [via LibreCAD]
<[hidden email]> wrote:
> Yes, you're right.
> However the problem is in Qt. I wrote a simple program that prints a word on
> an A3 paper.
> On other system (e.g. windows) everything works fine, on my archlinux 64 bit
> it creates an A4.

I think you're right, it's a qt bug - don't know how much we can do with that:
http://www.eaglecentral.ca/forums/index.php?t=msg&goto=132446&S=576ba10e86783cc00e88495196dc6082

I can't find a reference in qt's bugs, however . . .