Printing image in CGI using CUPS
lazarus / 39-Graphics

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martinrame · 2018-05-21 00:09

Hi, I want to print an image in a CUPS printer from a Linux CGI
application.

I'm reading a JPEG image using TFPMemoryImage and TFPReaderJPEG and
trying to print using the Printer object.

So far I can print Printer.Canvas.TextOut without problems, but cannot
do Printer.Canvas.Draw o Printer.Canvas.StretchDraw and related
methods.

I think the problem is that I'm working on NoGUI.

Any hint?.

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Leledumbo · 2018-05-21 07:37

Yes, the printers package has widgetset specific implementation (see
osprinters.pas and widgetset specific folders in the same directory),
where nogui doesn't have one. I think you should be fine targeting
gtk2, but no guarantee on this. Just try it and report.

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martinrame · 2018-05-21 12:24

Hi Leledumbo, I can't do that, because the target server doesn't have
a gui (it's an Ubuntu server).

I've found the Canvas used by the printer is TCairoPSCanvas, but it
looks like it  can't handle bitmaps...