[racket] Generating svg-images rather than png-images from Scribble

Instead of the complication of a natural setting, how about I just make
bitmaps refuse to convert themselves to svg-bytes (using the
file/convertible interface anyway -- if you know you have a bitmap you can
still convert it yourself). Then we can go back to just a list of symbols
for the parameter setting and I think that's enough to make everything work
out.

What do you think?

Robby


On Tue, Oct 15, 2013 at 12:04 PM, Neil Toronto <neil.toronto at gmail.com>wrote:

> Are their PNG bytes base64-encoded in an image tag inside the SVG? Or is
> it something less smart?
>
> Maybe the right thing to do is have each kind of convertible thing be able
> to specify its most natural encoding.
>
> Neil ⊥
>
>
> On 10/15/2013 10:37 AM, Robby Findler wrote:
>
>> Oh, and another thought: it appears that the 2htdp/image documentation
>> just went from 4 megs to 15 megs (of space on the disk) with the change
>> to SVG. It looks like there are just two images that account for nearly
>> 10 megs, tho. So I could switch just those back to being pngs and that
>> would make a big difference in the size. So maybe we also need
>> finer-grained support to override the defaults in a few places?
>>
>> Or is there support for zipping them somehow? That appears to get a 10x
>> improvement for one of the big ones.
>>
>> Robby
>>
>>
>> On Tue, Oct 15, 2013 at 11:32 AM, Robby Findler
>> <robby at eecs.northwestern.edu <mailto:robby at eecs.**northwestern.edu<robby at eecs.northwestern.edu>>>
>> wrote:
>>
>>     Oh, right! Silly me. I've fixed 2htdp/image images so they can be
>>     converted to svgs.
>>
>>     I've also adjusted the scribble html renderer so that it treats
>>     the current-render-pict-as parameter as a suggestion on an ordering
>>     (png first or svg first) instead of insisting that all convertible
>>     things render as one or the other.
>>
>>     But now that I write this message, I'm thinking that it probably
>>     makes more sense to have a parameter whose value is a list of
>>     suggested conversions (the importance being the order) and that the
>>     parameters names should be based around the word 'convertible'
>>     instead of 'pict'.
>>
>>     Does that seem okay to you?
>>
>>     Robby
>>
>>
>>     On Tue, Oct 15, 2013 at 4:46 AM, Jens Axel Søgaard
>>     <jensaxel at soegaard.net <mailto:jensaxel at soegaard.net>**> wrote:
>>
>>         2013/10/15 Robby Findler <robby at eecs.northwestern.edu
>>         <mailto:robby at eecs.**northwestern.edu<robby at eecs.northwestern.edu>
>> >>:
>>
>>          > I gave this a try and I'm just getting "???" in the image
>>         docs. Below is my
>>          > change to the image library. Does anyone know where the ???s
>>         come from?
>>
>>         I was puzzled at first, but if I understand correctly, the HtDP
>>         images
>>         aren't picts but image-snips.
>>
>>         This implies that they don't get converted at line 585 in [1]
>>         pict-lib/texpict/private/**mrpict-extra.rkt,
>>         but that the conversion called is the one in [2]
>>         gui-lib/mrlib/image-core.rkt at line 232.
>>         I only made changes in the first one, not the second one.
>>
>>         I am unsure how to fix this - have the image snips still the
>>         pict, or
>>         have they become
>>         become bitmaps at this point?
>>
>>         [1]
>>         https://github.com/plt/racket/**blob/**
>> 5ed686d9911b9f0d1cb1d5cb58d695**0e33b9d17c/pkgs/pict-pkgs/**
>> pict-lib/texpict/private/**mrpict-extra.rkt#L585<https://github.com/plt/racket/blob/5ed686d9911b9f0d1cb1d5cb58d6950e33b9d17c/pkgs/pict-pkgs/pict-lib/texpict/private/mrpict-extra.rkt#L585>
>>
>>         [2]
>>         https://github.com/plt/racket/**blob/master/pkgs/gui-pkgs/gui-**
>> lib/mrlib/image-core.rkt#L232<https://github.com/plt/racket/blob/master/pkgs/gui-pkgs/gui-lib/mrlib/image-core.rkt#L232>
>>
>>         /Jens Axel
>>
>>
>>          > Robby
>>          >
>>          > ☕  git diff | cat
>>          > diff --git
>>          >
>>         a/pkgs/htdp-pkgs/htdp-doc/**teachpack/2htdp/scribblings/**
>> image-guide.scrbl
>>          >
>>         b/pkgs/htdp-pkgs/htdp-doc/**teachpack/2htdp/scribblings/**
>> image-guide.scrbl
>>          > index 8a625611..d66c922 100644
>>          > ---
>>         a/pkgs/htdp-pkgs/htdp-doc/**teachpack/2htdp/scribblings/**
>> image-guide.scrbl
>>          > +++
>>         b/pkgs/htdp-pkgs/htdp-doc/**teachpack/2htdp/scribblings/**
>> image-guide.scrbl
>>          > @@ -12,7 +12,9 @@
>>          >            "img-eval.rkt"
>>          >            scribble/decode
>>          >            scribble/manual
>>          > -          scribble/eval)
>>          > +          scribble/eval
>>          > +          scribble/core
>>          > +          scribble/html-properties)
>>          >
>>          >  @(define guide-eval (make-img-eval))
>>          >
>>          > @@ -35,8 +37,8 @@
>>          >  @(interaction-eval #:eval guide-eval
>>          >                     (require racket/list racket/local))
>>          >
>>          > -
>>          > - at title[#:tag "image-guide"]{Image Guide}
>>          > + at title[#:style (style "svg" (list (render-pict-as
>> 'svg-images)))
>>          > +               #:tag "image-guide"]{Image Guide}
>>          >
>>          >  This section introduces the @racketmodname[2htdp/image]
>> library
>>          >  through a series of increasingly complex image constructions
>>          > diff --git
>>         a/pkgs/htdp-pkgs/htdp-doc/**teachpack/2htdp/scribblings/**
>> image.scrbl
>>          > b/pkgs/htdp-pkgs/htdp-doc/**teachpack/2htdp/scribblings/**
>> image.scrbl
>>          > index 9c7d447..6f3cb39 100644
>>          > ---
>>         a/pkgs/htdp-pkgs/htdp-doc/**teachpack/2htdp/scribblings/**
>> image.scrbl
>>          > +++
>>         b/pkgs/htdp-pkgs/htdp-doc/**teachpack/2htdp/scribblings/**
>> image.scrbl
>>          > @@ -34,7 +34,7 @@
>>          >       (img-eval '(extra-margin 0))))
>>          >
>>          >
>>          > - at teachpack["image"]{Images}
>>          > + at teachpack[#:svg? #t "image"]{Images}
>>          >
>>          >  @(define mode/color-and-nitty-text
>>          >     (make-splice
>>          > diff --git
>>         a/pkgs/htdp-pkgs/htdp-doc/**teachpack/htdp/scribblings/**
>> shared.rkt
>>          > b/pkgs/htdp-pkgs/htdp-doc/**teachpack/htdp/scribblings/**
>> shared.rkt
>>          > index 82ade26..b2c1b40 100644
>>          > ---
>>         a/pkgs/htdp-pkgs/htdp-doc/**teachpack/htdp/scribblings/**
>> shared.rkt
>>          > +++
>>         b/pkgs/htdp-pkgs/htdp-doc/**teachpack/htdp/scribblings/**
>> shared.rkt
>>          > @@ -1,12 +1,17 @@
>>          >  #lang racket/base
>>          >
>>          > -(require scribble/manual)
>>          > +(require scribble/manual
>>          > +         scribble/core
>>          > +         scribble/html-properties)
>>          >
>>          >  (provide teachpack
>>          >           beginner-require)
>>          >
>>          > -(define (teachpack tp . name)
>>          > +(define (teachpack #:svg? [svg? #f] tp . name)
>>          >    (apply title #:tag tp
>>          > +         #:style (if svg?
>>          > +                     (style "svg" (list (render-pict-as
>>         'svg-images)))
>>          > +                     #f)
>>          >           `(, at name ": " ,(filepath (format "~a.rkt" tp))
>>          >             ,(index (format "~a teachpack" tp)))))
>>          >
>>          > ☕  [robby at yanpu]
>>          > ~/git/plt/pkgs/htdp-pkgs/htdp-**doc/teachpack/2htdp/**
>> scribblings
>>          > ☕
>>          >
>>
>>
>>
>>         --
>>         --
>>         Jens Axel Søgaard
>>
>>
>>
>>
>>
>> ____________________
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>>
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