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| -rw-r--r-- | Mac/Demo/index.html | 7 | ||||
| -rw-r--r-- | Mac/Demo/printing/PrintingDemo.py | 93 |
2 files changed, 99 insertions, 1 deletions
diff --git a/Mac/Demo/index.html b/Mac/Demo/index.html index 5d706ce..c122b60 100644 --- a/Mac/Demo/index.html +++ b/Mac/Demo/index.html @@ -113,6 +113,11 @@ img modules on the mac. on using the respective managers. In the <i>Mac:Lib</i> folder you will also find modules that do useful things with the Communications Toolbox, the Finder interface, etc. + +<LI> +<I>Printing</I> has an example on using the Printing module to, you guessed +it, print from Python. The code is somewhat self-documenting. Donated +by Just van Rossum, who also donated the Printing module itself. </UL> At some point in the (possibly distant) future, I will add chapters on @@ -131,5 +136,5 @@ documentation. <p> <HR> <A HREF="http://www.cwi.nl/~jack">Jack Jansen</A>, -<A HREF="mailto:jack@cwi.nl">jack@cwi.nl</A>, 25-Feb-98. +<A HREF="mailto:jack@cwi.nl">jack@cwi.nl</A>, 27-Apr-98. </BODY></HTML> diff --git a/Mac/Demo/printing/PrintingDemo.py b/Mac/Demo/printing/PrintingDemo.py new file mode 100644 index 0000000..6f7881f --- /dev/null +++ b/Mac/Demo/printing/PrintingDemo.py @@ -0,0 +1,93 @@ +import Printing +import Qd +import Fm +import Res + +# some constants +PostScriptBegin = 190 # Set driver state to PostScript +PostScriptEnd = 191 # Restore QuickDraw state +PostScriptHandle = 192 # PostScript data referenced in handle + +CHUNK_SIZE = 0x8000 # max size of PicComment + +def PostScript(text): + """embed text as plain PostScript in print job.""" + handle = Res.Resource('') + Qd.PicComment(PostScriptBegin, 0, handle) + while text: + chunk = text[:CHUNK_SIZE] + text = text[CHUNK_SIZE:] + handle.data = chunk + Qd.PicComment(PostScriptHandle, len(chunk), handle) + handle.data = '' + Qd.PicComment(PostScriptEnd, 0, handle) + +# create a new print record +printrecord = Printing.NewTPrintRecord() + +# open the printer +Printing.PrOpen() +try: + # initialize print record with default values + Printing.PrintDefault(printrecord) + + # page setup, ok is 0 when user cancelled + ok = Printing.PrStlDialog(printrecord) + if not ok: + raise KeyboardInterrupt + # at this stage, you should save the print record in your document for later + # reference. + + # print job dialog, ok is 0 when user cancelled + ok = Printing.PrJobDialog(printrecord) + if not ok: + raise KeyboardInterrupt + + # once per document + port = Printing.PrOpenDoc(printrecord) + # port is the Printer's GrafPort, it is also the current port, so no need to Qd.SetPort(port) + try: + # start printing a page + # XXX should really look up what pages to print by + # inspecting the print record. + Printing.PrOpenPage(port, None) + try: + # use QuickDraw like in any other GrafPort + Qd.FrameRect((10, 250, 100, 500)) + Qd.FrameRect((10, 510, 100, 600)) + Qd.MoveTo(10, 100) + Qd.TextSize(50) + Qd.TextFont(Fm.GetFNum("Helvetica")) + Qd.DrawString("It rreally works!") + Qd.MoveTo(10, 150) + Qd.TextSize(20) + Qd.DrawString("(and now for a little PostScript...)") + + # example PostScript code + ps = """ + % the coordinate system is the quickdraw one, which is flipped + % compared to the default PS one. That means text will appear + % flipped when used directly from PostScript. + % As an example we start by defining a custom scalefont operator + % that corrects this. + /myscalefont{[exch 0 0 2 index neg 0 0]makefont}def + 0.75 setgray + 0 0 moveto + 0 30 lineto 10000 30 lineto + 10000 0 lineto closepath fill + 0 setgray + 5 25 moveto /Courier findfont 20 myscalefont setfont + (Printed with PostScript!) show + 2 setlinewidth [10 10 5 10] 0 setdash 5 5 moveto 400 0 rlineto stroke + """ + # embed the PostScript code in the print job + PostScript(ps) + finally: + # when done with the page + Printing.PrClosePage(port) + finally: + # when done with the document + Printing.PrCloseDoc(port) +finally: + # when done printing + Printing.PrClose() |