[Coco] Pdf on coco3

[Mathieu Bouchard]

EPUB is based on HTML (XHTML actually), so it wouldn't be any harder than 
writing a simple web browser, either in graphics mode, or in text mode. Unix has 
several examples of text-mode browser (for VT100 terminals, though often not 
caring about colours) : Lynx, Links and more recently W3M. Unix also has at 
least one mail client that can display HTML in a similar text-mode way : Alpine 
(which is still my default mail client today).

When supporting EPUB, it should be fairly easy to drop HTML or CSS codes that 
you don't want to support (either because you're in text mode or because your 
graphics mode font display doesn't support everything).

In PDF, it's harder to get away with that, because it contains hardcoded 
positions for text, so, you can't just pick a different font size and expect it 
to fit in the page or look good. It's not as low level as CGP-115 or LOGO 
drawing commands, but it's not meant to deviate from what it is exactly meant to 
display. It's not even meant for low-res displays, Postscript was originally 
designed to be efficient on printers that could do several thousands of pixels 
per row but had cables way too low-speed for transmitting bitmaps, and then PDF 
is the successor of PS. So, expect irregular spacing between characters as you 
reduce resolution or zoom out... I can still notice it sometimes with modern 
displays (e.g. 1920 pixels wide).

(Though PDF is a binary format and Postscript isn't, they otherwise have lots in 
common, though not nearly as much as between EPUB and a web page)


Le 2017-03-22 à 10:55:00, Rietveld Rietveld a écrit :

> I have my entire collection of Rainbow magazine PDFS on my SDC. I thought it would be nice to be able to view them with the coco‎ instead of my PC
>
> Sent from my BlackBerry 10 smartphone.
>  Original Message
> From: Bill Nobel
> Sent: Wednesday, March 22, 2017 1:55 AM
> To: CoCoList for Color Computer Enthusiasts
> Reply To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] Pdf on coco3
>
>
> There are many pdf’s and a couple of epub’s is there something specific you are after?
>
> Bill Nobel
> b_nobel at hotmail.com<mailto:b_nobel at hotmail.com>
>
>
>
> On Mar 21, 2017, at 7:51 PM, Rietveld Rietveld <rietveldh at hotmail.com<mailto:rietveldh at hotmail.com>> wrote:
>
> Hi. Is there a Pdf or epub reader for the coco3
>
> Sent from my BlackBerry 10 smartphone.
>
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| Mathieu BOUCHARD --- tél: 514.623.3801, 514.383.3801 --- Montréal, QC