World: r3wp
[Postscript] Emitting Postscript from REBOL
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Henrik 17-Apr-2006 [677] | I'm wondering now whether the tendency for new printers to have built in postscript is going up or down... |
Graham 17-Apr-2006 [678x4] | I remember that NeXT printers were so cheap because all the postscript processing was done by the NeXt OS, and so the printer was just a bare engine. |
A bit like Windows printers I guess. | |
If you don't have a postscript printer .. I recall in the old days you created a large bitmap in memory, and then printed it all out dot by dot. | |
I remember driving my dot matrix printer like that. | |
Graham 18-Apr-2006 [682] | Now to do desktop publishing, need a hyphenation dictionary, and a way to do kerning. |
Anton 18-Apr-2006 [683] | Graham, in your demo above do http://www.compkarori.com/reb/psd2draw.r How come the text disappears at different sizes ? |
Graham 18-Apr-2006 [684x2] | If you're talking about the rotated and transformed text, I think it's because there's a glitch in the way scaling etc is computed. Probably my fault, and since I don't need scaling or rotations, I haven't looked at it very hard. |
you can see the same problem with the shaded box which rotates and moves in closer to the middle as the size is reduced. | |
Anton 18-Apr-2006 [686x7] | No, I mean all the different text strings disappear and reappear at different times as you drag the slider. Something to do with font size ? |
Maybe scale-draw creates a font object with a size which is not supported ? | |
For example, from code that scale-draw produces: | |
font1: make object! [ name: "Nimbus Roman No9 L" style: none size: 33 color: 255.0.0 offset: 2x2 space: 0x0 align: 'center valign: 'center shadow: none ] font2: make object! [ name: "Nimbus Roman No9 L" style: none size: 13 color: 0.0.0 offset: 2x2 space: 0x0 align: 'center valign: 'center shadow: none ] view layout [box 500x700 white effect [draw [ box 0x0 493x698 fill-pen none box 0x0 493x698 line-width 0 font font1 pen 255.0.0 text vectorial "REBOL PostScript Dialect" 59x68 pen 0.0.0 line 59x104 431x104 font font2 pen 0.0.0 text vectorial {With this dialect it's possible to easily produce PostScript output.} 79x121 ]]] | |
The second text does not appear for me on View1.3.2.3.1 | |
but it does when font/size is at 15 instead of 13..... | |
Maybe my fonts are not so complete. | |
Gabriele 18-Apr-2006 [693] | graham, i don't think you want to look at the code (still too ugly), but the pdf maker does kerning. |
Graham 18-Apr-2006 [694x6] | Anton, did you download that font pack I pointed to ? |
When I look at the scaling, the only text that does funny things is the one that says "transformations" | |
I see both texts on my system. | |
as they are true type fonts, they should appear at all sizes. | |
Gabriele, do you use the kerning for all text placement in pdf-maker? | |
and where do you get the hint data from? Is it read from the font somehow? | |
Anton 18-Apr-2006 [700x2] | Graham, oh no I didn't, sorry I missed that. |
Good idea to put a link to the font pack into the ps2draw.r header. | |
Graham 18-Apr-2006 [702x4] | I've uploaded a new version with that information in the header now. |
this version allows you to print to a network printer, to lpt1, or to a disk file, and then it calls the RoPS viewer. | |
A line with embedded CR is now rendered correctly in the postscript output. | |
I have a button "Edit" which imperfectly shows you the dialect source ( strings lose their quote marks). Not formatted though. And save which is supposed to re-render any changes doesn't work .. because the data needs to be converted from text to a block, and without the quote marks for the text, it dies. Too late for me to find a fix. | |
Anton 18-Apr-2006 [706x3] | molded ? |
Yeah, "Edit data" just forms the data, mold it instead. | |
Starting to look very good. :) | |
Graham 18-Apr-2006 [709x5] | update a new version that shows the data formatted. |
you can edit and save, and it redraws it. | |
But there is a context problem with the colours .. so I had to replace (red) and (black) with their tuples. | |
I guess I need to bind somewhere... | |
mold ? Oh ... didn't think of that. | |
Henrik 18-Apr-2006 [714x2] | with postscript you probably can't control what tray you need to print from...? |
graham, did you figure out how to use the parallel port and was that for printing? | |
Gabriele 18-Apr-2006 [716] | Graham: yes, and data is parsed from the Adobe Font Metrics file and included in pdf-maker.r for the 14 standard postscript fonts. |
Graham 18-Apr-2006 [717x2] | Henrik, my latest demo has a button that prints to the parallel port. As for choosing trays and paper size, I think you can set that in the postscript comments. |
Gabriele, do you have a reference on how to use this font metric data ? | |
Henrik 18-Apr-2006 [719] | is there a method to center text? |
Graham 18-Apr-2006 [720] | I used a ruler :) |
Henrik 18-Apr-2006 [721] | darn it |
Graham 18-Apr-2006 [722] | Ok, let's be serious |
Henrik 18-Apr-2006 [723] | hmm... at least measure the size of the text |
Graham 18-Apr-2006 [724x3] | You can determine the size of the text based on the current point size |
and you know the page size | |
so, you can center it in draw. | |
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