Printing images through Python

[Kevin]

Thanks for the help Tim, seems to work well!  At least now that you've given
me a "working" example to start with I can build from there.

One problem I had though, just FYI:

ratios = [1.0 * printer_resolution[0] / bmp.size[0], 1.0 *
printer_resolution[1] / bmp.size[1]]

turned out that printer_resolution[1] was a function... have to do more
looking to figure out why.  I just used [0] for both args and it was fine
(for now).

Thanks!

Kevin.

"Tim Golden" <tim.golden at viacom-outdoor.co.uk> wrote in message
news:mailman.1065171306.2074.python-list at python.org...
> > From: Kevin [mailto:other at cazabon.com]
> > Does ANYONE have Python code to print PIL images?
>
> It just so happens that I've been going through the same bit of grief
> recently. Depending on just how much control you want, I advocate two
> approaches, with several others possible if I had more time to explore
the,
> frankly arcane, possibilities offered by the Win32 SDK:
>
> 1) Use ReportLab's PDF generator to embed the image. Get the ReportLab
docs
> (http://www.reportlab.com/docs/userguide.pdf) and search for InlineImage.
If
> you need a code example I can give you one, but it's pretty
straightforward.
> This has the advantage that you can then call whatever Acrobat viewer you
> want in print mode (eg acrord32.exe /p) to give the user the chance to
> select the printer, paper size etc. You can even get Acrobat to print
using
> defaults without asking the user anything (can't remember the switch).
>
> 2) If you want quick-and-dirty, make use of the fact that
Device-Independent
> Bitmaps are *much* easier to work with in Windows than the convention
> HBITMAP variety. So (with minimal comments):
>
> <code>
> import win32ui
> import win32gui
> import win32con
> from PIL import Image, ImageWin
>
> #
> # Constants for GetDeviceCaps
> #
> HORZRES = 8
> VERTRES = 10
>
> #
> # Find the printer resolution to scale to
> #
> hDC = win32ui.CreateDC ()
> hDC.CreatePrinterDC () # can optionally put a printer name in here
> printer_resolution = hDC.GetDeviceCaps (HORZRES), hDC.GetDeviceCaps
> (VERTRES)
> print "printer resolution =", printer_resolution
>
> #
> # Open the bitmap and rotate because we know it's
> #  really landscape
> #
> bmp = Image.open ("screen.bmp")
> print "original bitmap size =", bmp.size
> bmp = bmp.rotate (90)
> print "rotated bitmap size =", bmp.size
>
> #
> # Resize the image to fit the page but not to overflow
> #
> ratios = [1.0 * printer_resolution[0] / bmp.size[0], 1.0 *
> printer_resolution[1] / bmp.size[1]]
> print "ratios =", ratios
> scale = min (ratios)
> print "scale =", scale
>
> #
> # Create the printer document and send the page
> #
> hDC.StartDoc ("Test")
> hDC.StartPage ()
>
> dib = ImageWin.Dib (bmp)
> scaled_size = [scale * i for i in bmp.size]
> print "scaled bitmap size =", scaled_size
> dib.draw (hDC.GetHandleOutput (), [0, 0] + scaled_size)
>
> hDC.EndPage ()
> hDC.EndDoc ()
> </code>
>
> HTH.
> TJG
>
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