squeakland April 2003

squeakland@lists.squeakfoundation.org

104 participants
293 discussions

Squeakland outages
by m.rueger＠acm.org 18 Apr '03

18 Apr '03

Hi all, squeakland.org will be down intermittently today and/or on Friday because of construction work. Everything hopefully will be back to normal in time for the weekend. Cheers Michael

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How does the cache work for the plugin?
by guzdial＠cc.gatech.edu 18 Apr '03

18 Apr '03

One of the development problems I had when writing Active Essays was that uploading new revisions to projects didn't seem to get seen by the plugin. I'd use a project (say, synthesis.pr) and find a bug in it. I'd fix the bug, upload a new one, and then access synthesis.pr again -- but the bug would still be there! I'd then re-upload as synthesis2.pr, and the bug would go away. Would restarting my browser help? I'm guessing that the plugin is cacheing projects. For how long does the cache last? Thanks! Mark -------------------------- Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280 Associate Professor - Learning Sciences & Technologies. Collaborative Software Lab - http://coweb.cc.gatech.edu/csl/ (404) 894-5618 : Fax (404) 894-0673 : guzdial(a)cc.gatech.edu http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html

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Active Essays on Computer Music
by guzdial＠cc.gatech.edu 18 Apr '03

18 Apr '03

I now have six active essays on computer music up at: http://swiki.cc.gatech.edu:8080/compMusic/ActiveEssays These start out with a review of Squeak's computer music tools, then go up from acoustics, through basic sound synthesis, how to generate a waveform, what makes a timbre, and up to creating a flexible oscillator. I'm going to be working on synthesis methods next, but probably not in Active Essay format. I'll return to Active Essays when I write up a tour of Squeak's computer music facilities. I'd appreciate any comments or critiques of these. From the Squeakland folks, I'd be particularly interested in suggestions for more active elements to put in, or other Squeak features I could have incorporated that I don't (or maybe don't know about). These are way different than the Active Essays that others have done -- perhaps we don't want to apply that name to these things. Some of the differences include: - My audience are students who already know Squeak and will be programming in Squeak. So, I don't make any use of tiles, and I show lots of code. - I wrote these to work as lecture slides and student notes. As such, there is less text than a normal essay, there are some things unlabelled (e.g., FFTs and waveforms) because I plan to discuss them in class, and there are implicit activities for some of these pages (e.g., there's active text that brings up a wave editor to play with) that I plan to realize in lecture. Mark -------------------------- Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280 Associate Professor - Learning Sciences & Technologies. Collaborative Software Lab - http://coweb.cc.gatech.edu/csl/ (404) 894-5618 : Fax (404) 894-0673 : guzdial(a)cc.gatech.edu http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html

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How do we create text URL links?
by guzdial＠cc.gatech.edu 18 Apr '03

18 Apr '03

Is it still possible to create URL links in text fields in a stack? I tried selecting a URL, typing command-6, and choosing "link to" but I got an error. It seemed that it was trying to save something on a page (on the default server, Jumbo). What does "link to" do these days? Is there another mechanism for creating a clickable URL? Thanks! Mark -------------------------- Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280 Associate Professor - Learning Sciences & Technologies. Collaborative Software Lab - http://coweb.cc.gatech.edu/csl/ (404) 894-5618 : Fax (404) 894-0673 : guzdial(a)cc.gatech.edu http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html

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Text fields that you can't resize in stacks
by guzdial＠cc.gatech.edu 18 Apr '03

18 Apr '03

I've now replicated the bug that I mentioned earlier, and I've found a fix, too. - Create a new stack (drag one out from the stack tools flap) - Add a background text field (again from stack tools) - Select the text in the background text field. Type alot -- enough that it would extend past the end of the card if it were in a line (see the picture attached). - Now, bring up the halos on the background text field so that you can resize it to make it look nice. KERBLAM! The size becomes larger than the card, you can't move the yellow halo, and you can't pick it up to drag it out of the card to fix (as in the attached picture). The fix is: - Add a new card to your stack. - On the new card, you can select the background text field AND CHANGE THE YELLOW HALO. Move it inside the card boundary. - Go back to the front card -- your text is resized to match that on the next page. Mark

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Fix still doesn't prevent error box
by guzdial＠cc.gatech.edu 18 Apr '03

18 Apr '03

I tried this -- still errors when loading the newly-saved project. >Date: Wed, 11 Jul 2001 12:11:14 -0400 (EDT) >From: Bob Arning <arning(a)charm.net> >Subject: Re: Escaping without flap, and avoiding the flap error >To: <guzdial(a)cc.gatech.edu>, <squeakland(a)squeakland.org> > >Mark, > >Looks like you found a Squeak version discrepancy. If you evaluate >this in the project before you publish it, things may go better: > >Project current projectParameters at: #globalFlapsEnabledInProject put: false > >Cheers, >Bob > >On Wed, 11 Jul 2001 11:46:53 -0400 Mark Guzdial <guzdial(a)cc.gatech.edu> wrote: > >Also, even with global flaps surpressed, I still get an error when > >entering a plugin -- same error, that the global flaps preference > >isn't found in the dictionary, but now, when trying to SUPRESS flaps. > >Is there a way of avoiding the error altogether? (You can find my > >project at http://swiki.cc.gatech.edu:8080/compMusic/8 if you to see > >what I mean.) -------------------------- Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280 Associate Professor - Learning Sciences & Technologies. Collaborative Software Lab - http://coweb.cc.gatech.edu/csl/ (404) 894-5618 : Fax (404) 894-0673 : guzdial(a)cc.gatech.edu http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html

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Escaping without flap, and avoiding the flap error
by guzdial＠cc.gatech.edu 18 Apr '03

18 Apr '03

Is there a menu item somewhere that would allow me to escape the browser when the orange flap is not visible (i.e., is below the scroll area of my browser)? Also, even with global flaps surpressed, I still get an error when entering a plugin -- same error, that the global flaps preference isn't found in the dictionary, but now, when trying to SUPRESS flaps. Is there a way of avoiding the error altogether? (You can find my project at http://swiki.cc.gatech.edu:8080/compMusic/8 if you to see what I mean.) Thanks! Mark -------------------------- Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280 Associate Professor - Learning Sciences & Technologies. Collaborative Software Lab - http://coweb.cc.gatech.edu/csl/ (404) 894-5618 : Fax (404) 894-0673 : guzdial(a)cc.gatech.edu http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html

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never mind resizing problem...and first ActiveEssay!
by guzdial＠cc.gatech.edu 18 Apr '03

18 Apr '03

I don't know what happened, but my Yellow Halo buttons work just fine now. An intermittent problem, it seems. I just published my first project and ran it with the plugin! Check out http://swiki.cc.gatech.edu:8080/compMusic/8 if you're interested. (It's not a very sophisticated essay -- just a catalog of cool Squeak sound/music toys. ) Issues/questions that I now have (comments/advice/answers would be most welcome!): - How does the plugin figure out the size in which to display the project? My project is too big to fit comfortably in the browser window (e.g., the tab flap to escape the browser never appeared). I scrolled down in the browser, but the bottom of the project never refreshed. (I tried "restore display" but that caused a network access that never terminated.) - Not all Squeak tools can be easily used inside a project. The WaveEditor was the most interesting combination. The wave is visible in the editor, but if you scroll the window, it's gone. You can't Play the sound anymore, but the keyboard in the WaveEditor still works. (Other tools like the MIDI Player worked fine in a project.) - On the other hand, the fact that sound recording still works FROM WITHIN THE PLUGIN *FROM WITHIN THE BROWSER* is pretty amazing! - Should we be turning off global flaps before saving projects for use with the plugin? I get key errors about that Preference every time I open the project and (it seems) every time I turn the page in the stack. - I'm confused about publishing a project to disk versus publishing it to someplace like Bob's Super Swiki. If I publish to the SuperSwiki, it goes up as a single file, yes? If I publish to my disk, I get several files (i.e., a .pr file and a .gif file, in my case). Is there someway to convert from the multi-file to single-file formats? I want to serve from my Computer Music Swiki, but I don't think I can currently publish to an unmodified Comanche Swiki. I'd like to publish to my disk, and then upload it...which is how I did the one that's there, but I uploaded each piece. Will there be issues down the road where more than two files get generated? Thanks for any feedback! Mark -------------------------- Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280 Associate Professor - Learning Sciences & Technologies. Collaborative Software Lab - http://coweb.cc.gatech.edu/csl/ (404) 894-5618 : Fax (404) 894-0673 : guzdial(a)cc.gatech.edu http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html

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Escaping without flap, and avoiding the flap error
by arning＠charm.net 18 Apr '03

18 Apr '03

Mark, Looks like you found a Squeak version discrepancy. If you evaluate this in the project before you publish it, things may go better: Project current projectParameters at: #globalFlapsEnabledInProject put: false Cheers, Bob On Wed, 11 Jul 2001 11:46:53 -0400 Mark Guzdial <guzdial(a)cc.gatech.edu> wrote: >Also, even with global flaps surpressed, I still get an error when >entering a plugin -- same error, that the global flaps preference >isn't found in the dictionary, but now, when trying to SUPRESS flaps. >Is there a way of avoiding the error altogether? (You can find my >project at http://swiki.cc.gatech.edu:8080/compMusic/8 if you to see >what I mean.)

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Escaping without flap, and avoiding the flap error
by arning＠charm.net 18 Apr '03

18 Apr '03

On Wed, 11 Jul 2001 11:46:53 -0400 Mark Guzdial <guzdial(a)cc.gatech.edu> wrote: >Is there a menu item somewhere that would allow me to escape the >browser when the orange flap is not visible (i.e., is below the >scroll area of my browser)? Mark, World menu/appearance/full screen on Cheers, Bob

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squeakland April 2003