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93 lines
2.7 KiB
Python
93 lines
2.7 KiB
Python
import Printing
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from Carbon import Qd
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from Carbon import Fm
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from Carbon import Res
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# some constants
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PostScriptBegin = 190 # Set driver state to PostScript
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PostScriptEnd = 191 # Restore QuickDraw state
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PostScriptHandle = 192 # PostScript data referenced in handle
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CHUNK_SIZE = 0x8000 # max size of PicComment
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def PostScript(text):
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"""embed text as plain PostScript in print job."""
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handle = Res.Resource('')
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Qd.PicComment(PostScriptBegin, 0, handle)
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while text:
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chunk = text[:CHUNK_SIZE]
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text = text[CHUNK_SIZE:]
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handle.data = chunk
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Qd.PicComment(PostScriptHandle, len(chunk), handle)
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handle.data = ''
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Qd.PicComment(PostScriptEnd, 0, handle)
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# create a new print record
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printrecord = Printing.NewTPrintRecord()
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# open the printer
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Printing.PrOpen()
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try:
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# initialize print record with default values
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Printing.PrintDefault(printrecord)
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# page setup, ok is 0 when user cancelled
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ok = Printing.PrStlDialog(printrecord)
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if not ok:
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raise KeyboardInterrupt
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# at this stage, you should save the print record in your document for later
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# reference.
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# print job dialog, ok is 0 when user cancelled
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ok = Printing.PrJobDialog(printrecord)
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if not ok:
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raise KeyboardInterrupt
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# once per document
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port = Printing.PrOpenDoc(printrecord)
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# port is the Printer's GrafPort, it is also the current port, so no need to Qd.SetPort(port)
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try:
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# start printing a page
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# XXX should really look up what pages to print by
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# inspecting the print record.
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Printing.PrOpenPage(port, None)
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try:
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# use QuickDraw like in any other GrafPort
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Qd.FrameRect((10, 250, 100, 500))
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Qd.FrameRect((10, 510, 100, 600))
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Qd.MoveTo(10, 100)
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Qd.TextSize(50)
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Qd.TextFont(Fm.GetFNum("Helvetica"))
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Qd.DrawString("It rreally works!")
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Qd.MoveTo(10, 150)
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Qd.TextSize(20)
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Qd.DrawString("(and now for a little PostScript...)")
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# example PostScript code
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ps = """
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% the coordinate system is the quickdraw one, which is flipped
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% compared to the default PS one. That means text will appear
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% flipped when used directly from PostScript.
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% As an example we start by defining a custom scalefont operator
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% that corrects this.
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/myscalefont{[exch 0 0 2 index neg 0 0]makefont}def
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0.75 setgray
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0 0 moveto
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0 30 lineto 10000 30 lineto
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10000 0 lineto closepath fill
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0 setgray
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5 25 moveto /Courier findfont 20 myscalefont setfont
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(Printed with PostScript!) show
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2 setlinewidth [10 10 5 10] 0 setdash 5 5 moveto 400 0 rlineto stroke
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"""
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# embed the PostScript code in the print job
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PostScript(ps)
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finally:
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# when done with the page
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Printing.PrClosePage(port)
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finally:
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# when done with the document
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Printing.PrCloseDoc(port)
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finally:
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# when done printing
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Printing.PrClose()
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