Squeak-dev June 1998

squeak-dev@lists.squeakfoundation.org

83 participants
130 discussions

one more question: proxies
by Jason Karney 05 Jun '98

05 Jun '98

Hi all, busy day for questions from me ;-) How can I set up Squeak to make http connections out thru a firewall? Is it enough to set the proxy for HTTPSocket? Thanks. -- Jason Karney -- NetGenics Research Team jason(a)netgenics.com [STOP] Okay, you were there yesterday, but Where do you want to go tomorrow?

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newbie question: printing
by Jason Karney 05 Jun '98

05 Jun '98

Is there a way to print things from within Squeak? I am thinking primarily of printing from morphic. For example, printing out a BookMorph, or the view of a morphic world that includes various formatted text. Thanks. -- Jason Karney -- NetGenics Research Team jason(a)netgenics.com [STOP] Okay, you were there yesterday, but Where do you want to go tomorrow?

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Re: Morphic question
by Maloney 05 Jun '98

05 Jun '98

>Morphic question: Morph>>replaceSubmorph:by: calls "self autoLineLayout", >but autoLineLayout is only implemented by PasteUpMorph. Shouldn't there >be a default Morph>>autoLineLayout? Yes. Thanks! Re: >PS: Shouldn't something like this be implemented? > >Morph>>removeMorph: aMorph > > self changed. > submorphs do: [:m | m = aMorph ifTrue: [m privateOwner: nil]]. > submorphs _ submorphs copyWithout: aMorph. > submorphs size = 0 ifTrue: [submorphs _ EmptyArray]. > self layoutChanged. Not needed. Just do "aMorph delete". -- John

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Browser in 2.0: Explain and Format?
by Mark Guzdial 05 Jun '98

05 Jun '98

Explain and Format menu items seem to be gone from the Squeak 2.0 Browser. Are they there but hidden somewhere? I haven't tried to copy them in from 1.31 -- are there important changes that would prevent them from working? Explain is a bummer to lose, but Format is particularly sorely missed. When I fileIn code from people with other kinds of line endings, the code often gets severely garbled. I use Format to get it into a readable state. Thanks! Mark -------------------------- Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280 (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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Bug in (LargeINtegers) #\\ & #//
by eguevara＠dc.uba.ar 05 Jun '98

05 Jun '98

Hi!. There is Problem with #\\ andn #// messages in LargeIntegers, the problem is that if the argument is a negative SMallInteger, the operation is not defined because highBit is not defined for negaative integers (which is OK because of 2's complement, I think). It's a pitty that I can't fix the problem (the only thing that cross my mind is to send abs to the argument, but that would be contradictory with te same messages in SmallInteger, because the result would always be positive), besides there are some primitives invlolved. Kind regards. -- Eric Rodriguez Guevara eguevara(a)dc.uba.ar

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About the debugger
by sqrmax＠cvtci.com.ar 04 Jun '98

04 Jun '98

Hi. When tracing a halt, if there is enough depth to trace through, the debugger will also crash, burn and die whitely (i.e., 'the error handling failed'). I have a working example, but it is rather big and I am unable to isolate it. If you want to look at it, I can send you my change set (not huge) and an expression to evaluate. Andres.

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Re: Re: Bug when opening Transcript
by sqrmax＠cvtci.com.ar 04 Jun '98

04 Jun '98

Hi. >I ran into this as well. It must be a problem only if the Transcript is >collapsed while getting the updates. (Previously, I've watched the >updates logged in the Transcript as they happen). No... I watched the whole thing, collapsed it, saved, restarted and so, opened... and then it crashed, burned and then died horribly ;-). >I found that closing the offending Transcript works to get you out of >the mess. Find the StandardSystemController in the debugger and do "self >closeAndUnschedule". Ahhh... I'll see. >The thing that caught my attention is that it looks like the instance >variables of the Paragraph had become inconsistent. (In my case) The >"text" had a string with only two lines, whereas "lines" showed 4 >TextLineIntervals and "lastLine" was 4. Does this point to a basic >problem with TransciptStream's use of Paragraph, or is my understanding >of Paragraph off? Well yes, like 1500 and so lines with lastIndex = 38... Andres.

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Re: Where is the ZPoint.st code?
by stp＠limbo.create.ucsb.edu 04 Jun '98

04 Jun '98

lhooq(a)mail.hitel.net wrote, > Using STP's Graphics-3D.st need additional ZPoint.st, > and I can't find it.. It's in ftp://ftp.create.ucsb.edu/pub/Smalltalk/Squeak/goodies/STP11/System/ZPoint.… stp _ Stephen Travis Pope _ Center for Research in Electronic Art Technology (CREATE) _ Dept. of Music, Univ. of California, Santa Barbara (UCSB) _ stp(a)create.ucsb.edu, http://www.create.ucsb.edu/~stp/

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Bug when opening Transcript
by sqrmax＠cvtci.com.ar 04 Jun '98

04 Jun '98

Hi. I left a Transcript open while updating from the web... man... that was some experience! I left the text on it and minimized it. I've just tried to open it up, it shows up but no text is visible and Squeak gets into an infinite loop or something of the sort. I can debug, but after that I can't do anything else other than crash Squeak (by closing it without saving) and load the image again. So here's the debug. A StandardSystemView(View) receives the message display, which eventually sends displaySubViews to itself. A PluggableTextView receives display, and it sends super diplay to itself. Eventually, the paragraph inside the PluggableTextView is ordered to display itself. The Paragraph finally decides to displayLines:affectedRectangle:. A DisplayScanner comes up and starts working to displayLines:in:clippedBy:. The last line of that message is a huge block sent as a parameter for a do:, and that is sent to anInterval (55 to: 71, in this case). The interval executes the block with parameter 55, and finally it reaches the last lines of the block, where it reads [done] whileFalse: [...]. Well, Squeak never gets out of there. because the stop conditions are never met. The variable stopCondition is fixed at endOfRun. When that is executed, there's a fast out check consisting on checking if lastIndex = line last. In this case, endOfRun would answer true and the forever lasting block would finish, and so everything would continue (well?). But lastIndex is 38 and line is (1573 to: 1573)... it looks as if it should also read lastIndex < line first ifTrue: [^true]. But that makes the whole thing explode somewhere else (also a long debug list, that incredibly works because the interface itself is bugged). Well, I won't open the Transcript for the moment. Andres.

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Re: Bug when opening Transcript
by Tim Olson 04 Jun '98

04 Jun '98

>It definitely is getting weirded out by sending things to a collapsed >Transcript. I played with it some more and found the following simple >test can be used to get it to hang. (Note that number of lines, their >relative length and not starting with a cleared transcript can affect >your results). Looks like the problem is that the text is replaced without recomposing the paragraph, leading to incoherent state. Here's a fix that seems to work, although I don't know if it is the "correct" fix: 'From Squeak 2.0 of May 22, 1998 on 3 June 1998 at 10:56:40 pm'! "Change Set: TranscriptFix Date: 3 June 1998 Author: Tim Olson possible fix to Transcript display problem"! !Paragraph methodsFor: 'composition' stamp: 'tao 6/3/1998 22:49'! invalidateComposition "force a recomposition on the next display" lastLine _ nil.! ! !PluggableTextController methodsFor: 'transcript' stamp: 'tao 6/3/1998 22:51'! appendEntry "Append the text in the model's writeStream to the editable text. " view topView isCollapsed ifTrue: [paragraph invalidateComposition. ^ paragraph text replaceFrom: 1 to: paragraph text size with: model contents asText]. self deselect. paragraph text size > model characterLimit ifTrue: ["Knock off first half of text" self selectInvisiblyFrom: 1 to: paragraph text size // 2. self replaceSelectionWith: Text new]. self selectInvisiblyFrom: paragraph text size + 1 to: paragraph text size. self replaceSelectionWith: model contents asText. self selectInvisiblyFrom: paragraph text size + 1 to: paragraph text size! ! -- tim

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