World: r3wp
[Postscript] Emitting Postscript from REBOL
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Pekr 26-Apr-2006 [965] | yes, slow at zooming, but working .... will you be able to get any ps complicated doc be previewed in your viewer? |
Graham 26-Apr-2006 [966x2] | only if it is generated by the dialect. |
Remember, this isn't a postscript viewer... but a viewer of a rebol dialect that can either output to postscript or to draw. | |
Pekr 26-Apr-2006 [968x2] | so if you can do it in terms of your dialect, it is previewable? then it is absolutly sufficient imo .... |
the good thing then will be, that I will be able to localise ti, or change its design, if it stays for free .... | |
Graham 26-Apr-2006 [970] | I suspect that by the time I finish it, Gabriele will have come out with a pdf-maker which will render mine obsolete! |
Geomol 26-Apr-2006 [971x4] | The idea here is to produce postscript as the last thing, just before sending the data to the printer. We shouldn't produce postscript, that we then need to preview before printing, because we then need to solve the problem of converting postscript to something viewable on the screen. It's better to work with DRAW or whatever developers use to visualize their content and have preview at that level. Then in the end, the user wants to print and now, finally the content is converted to postscript to be sent to a printer. Having a postscript printer is a huge benefit, because you can say goodbye to printer drivers and all the trouble, those cause. The REBOL postscript dialect is your driver. :-) |
A postscript printer is a printer, that understands the postscript format. It reads the text commands, a postscript file is, and print. Data like images is inside the postscript file as hex or something. | |
Then the million dollar question: Why do printer manufacturers make printer drivers filling up 10s or 100s of MB on users harddiscs? Why do those drivers need to be so huge, if it's such a simple task to print (using postscript)? | |
(Of course if the printer isn't a postscript printer, and you want to print a postscript file, you need a driver to convert from postscript to the format, the printer understands. So people without a postscript printer can still print from postscript-producing REBOL programs. They then just need a printer driver.) | |
Chris 26-Apr-2006 [975] | Theoretically HTML+CSS should have everything you need to print with a fairly high degree of control, but all browser implementations suck. Badly. |
Henrik 26-Apr-2006 [976] | there's no support for text rotation or hyphenation in CSS either |
Geomol 26-Apr-2006 [977] | Most people producing print expect WYSIWYG. HTML+CSS is not a WYSIWYG standard (contrary to what many seems to think). So trying to produce WYSIWYG output from a browser (or expecting WYSIWYG output from a browser) is doomed from the beginning. |
Maxim 26-Apr-2006 [978x2] | hence the stupidiy of expecting traditional web apps to be able to do anything. :-( |
and why javascript should have been promoted more for the last 10 years. | |
Henrik 26-Apr-2006 [980] | a bit off topic: has any one noticed how often when printing HTML pages that the last page that comes out is just empty or useless? |
Volker 26-Apr-2006 [981] | How well does OO with such things? |
Geomol 26-Apr-2006 [982x2] | Yes, it happens alot to me too and is a waste of paper. Good that many websites has that little printer-friendly-version icon. |
Volker, OpenOffice doesn't include a browser (the versions I've used), while StarOffice did (when I used that). So opening a HTML doc in OO gives you the wordprocessor with the concept of paper-pages, and then you print, what you see. | |
Volker 26-Apr-2006 [984] | But how good is that html->page-maker? |
Geomol 26-Apr-2006 [985] | oops, I remembered wrong. Opening a HTML-file in OpenOffice gives you an HTML editor (without the concept of paper-pages). I'll make a test... |
Volker 26-Apr-2006 [986] | IIRC OO has multiple views, like pages, continuos. MAybe you can simply change that |
Geomol 26-Apr-2006 [987] | Opening a tv-program site from a danish tv-station made NeoOffice (a Mac version of OO) loop. I'll try with www.rebol.com |
Henrik 26-Apr-2006 [988] | geomol, is "Astronomically Slow" still the middle name of NeoOffice? |
Geomol 26-Apr-2006 [989x3] | yes :D |
www.rebol.com opened OK in NeoOffice, and I could change to "Print Layout". Right-margin is not perfect (as often with HTML, because it isn't a wysiwyg format), and it can probably be configured. Saving as PDF gave me exactly what was seen on the screen. | |
Volker, so my first impression is, that OO is OK to handle HTML, but not perfect (and how could any program be with all that misunderstanding of HTML out there). | |
Chris 26-Apr-2006 [992] | H: I think there is hyphenation in CSS 3, iirc. |
Graham 28-Apr-2006 [993x2] | Some small progress .. I can now get floating text tables, and text that flows from one textbox on one page to the next page. But not completely error free yet :( |
This is in Draw .. haven't tackled this in PostScript yet. | |
Graham 29-Apr-2006 [995x10] | do http://www.compkarori.com/reb/psd2draw5.r |
this is an alpha dialect that just does draw at present. | |
I have two textboxes on the first page, and one on the second. Text flows from the first page to the second, sort of justified. | |
A textbox is used also to centre the large titles on each page. | |
I have no idea why the small text looks as though it is in bold. | |
the point of having this dialect is to create page templates for viewing data from databases or whatever. The text is replaced either by evaluation or by compose, and you have your draw layout. | |
sure you can create VID layouts for viewing data from databases, but you can't print it easily. | |
Need to generate bar codes in postscript ? Here's some software on a MIT/X-Consortium license http://www.terryburton.co.uk/barcodewriter/ | |
so, as the author says, you can include a barcode as simply as | |
50 450 moveto (1-86074-271) (includetext) isbn barcode | |
Graham 8-Jun-2006 [1005x5] | I know about ez-plot being capable of doing very useful plots ( barring sequential date data ). |
but of course, there's no great way of printing out these plots. | |
This is a simple graph ( multivariable ) graph using the postscript dialect. http://www.compkarori.com/emr/graph.png | |
That's how it looks in draw and also when printed to a postscript printer. | |
It would be nice to have vertically oriented text for the y-axis label .. but I'm going to have to think again about text rotation in draw so that it can be mapped easily also to postscript. | |
Henrik 8-Jun-2006 [1010] | is that graph drawn with AGG? |
Graham 8-Jun-2006 [1011x2] | Draw is AGG is it not? |
that graph is output from my EMR program. | |
Henrik 8-Jun-2006 [1013x2] | the fonts look a little smeared. |
is that because they are vectorized? | |
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