Squeak-dev December 2003

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146 participants
414 discussions

[ANN] Advent Calendar
by Markus Gaelli 01 Dec '03

01 Dec '03

Hi folks, I assembled a little advent calendar in Squeak. You can download the 80 MBs (!) (movies included) from: ftp://ftp.ira.uka.de/pub/squeak/ev/adventskalender.zip Thanks to Marcus Denker for providing this space. Some "doors" are in German, but most should be understandable internationally. Besides being an advent calender there is, like in most advent calendars btw., no Christian connotation. Maybe we can do a calendar for the whole year and use Seaside or projects? 365 subscribers fills one door and off we go? I think the calendar metaphor can work as a nice marketing vehicle for Squeak. This one is old (based on 2.8) and exporting the projects gave some problems so I just polished the whole thing a bit for a release. Have fun and please tell me about any problems, Markus

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Squeak on the Sigmarion III
by Aaron J Reichow 01 Dec '03

01 Dec '03

Hello- especially Ned- I have aquired a Sigmarion III device as a review/demo unit. There is a lot of interest within some circles (HPC users, people who want an upgrade from their MobilePro or Jornada7xx), but being a japan-only device no good reviews have surfaced on the english mobile sites. Replying to some comments by Ned when Yoshiki-san brought up the Sig3 and my own impresions. The Sigmarion III is a newish Handheld PC-like device that runs WinCE 4.1. It is decently priced (as low as $360 in Japan) compared to anything else in its class. It has the usual specs for devices like this these days- 400 MHz PXA255, 64 MB RAM, SD and CF slots. That's about where it ends as far as the "usual" specs are concerned. In addition to the above, the Sigmarion III is special in a few ways- * A USB Host (1.X) *and* a seperate USB slave port: the former is for attaching USB devices, the latter for connecting the Sig3 to a desktop for syncing, usbnet, etc. I don't know of any other XScale PDAs that have this, although I think some Toshiba PocketPCs have at least some capability in this respect. You can get a CF card to a USB host port to a PocketPC or Zaurus, but they are pretty expensive (US$140), take up a CF slot (where does wifi go?!) and bulkier. Reading various forums, people have been able to hook up a number of devices to the USB port- keyboards, mice, USB hard drives scanners, and cd burners (!). * A 5" 800x480 touch screen. What is there more to say? A smaller DPI, so the screen is a bit taller on the vertical axis than the Zaurus is when they both have 480 pixels. Like the Zaurus C7x0 the screen is very sharp, packing a lot of pixels in a tiny space. Not as bright of a screen as the Zaurus C7x0, but easier to read for me for longer periods of time, though that is probably the DPI. * A touch-typable keyboard. Very much like the one on the Jornada 720. Which means that the keyboard feel like a laptop keyboard, a laptop keyboard with very small keys, but the same mechanism. As opposed to the click-click TV remote control-style of buttons on the Zaurus C7x0. I have pretty stubby hands and I have no problem typing on the Sig3's kb. There are all sorts of cellular data services you can get through NTT DoCoMo if you are in Japan. I am not and have no clue what options there are- but they do look sweet. As far as running Squeak, things are not perfect yet. I have spoken with Yoshiki-san some about it, but nothing has been resolved so far. Using the older, stable VM (which is pointed to on the WinCE Squeak website) there seems to be a limit on the size of image that works for me, even with 58 MB of RAM free, I can only load an image around 10 MB in size. I tried to use his beta VM that allow the user to set the size of the memory heap, but the slider control doesn't show up. I've had no problems running all sorts of standard image versions though. 0 tinyBenchmarks yields: 18017133 bc/sec and 633568 sends/sec. These numbers are very close to what the C7{5,6}0 get. They can be ordered through various Japan-US importers. The one with the best price (US$525) is Conics.net <http://conics.net/shp/pda/sigmarion3/> who also have some good photos up. Other places that carry them include Dynamism (US$599) and www.Japan-Direct.com (US$699). Regards, Aaron -- "Like the creators of sitcoms or junk food or package tours, Java's designers were consciously designing a product for people not as smart as them." :: paul graham

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[FIX][3.7a] ColorFormReadFromRemove-mu
by umejava＠mars.dti.ne.jp 01 Dec '03

01 Dec '03

from preamble: "Change Set: ColorFormReadFromRemove-mu Date: 1 December 2003 Author: Masashi Umezawa In 3.7a, ColorForm>>readFrom: should be removed. It raises ""not implemented"" error but actually it is not needed. A simple test code, which raises the error before this changeSet: --- originalColorForm _ ColorForm someInstance. binaryStream _ ReadWriteStream on: (ByteArray new: 100). originalColorForm writeOn: binaryStream. binaryStream reset. readColorForm _ ColorForm new readFrom: binaryStream. originalColorForm bits = readColorForm bits "!

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[BUG]ShortPointArray(Object)>>doesNotUnderstand:
by raymondasselin＠sympatico.ca 01 Dec '03

01 Dec '03

I tried to open in this Squeak.image a previously saved drawing (Connectors 1.9) from an other Squeak.image. Both images are Squeak 3.5 image. 1 December 2003 10:24:15 am VM: Win32 - Squeak3.5 of '11 April 2003' [latest update: #5180] Image: Squeak3.5 [latest update: #5180] ShortPointArray(Object)>>doesNotUnderstand: Receiver: a ShortPointArray(0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0) Arguments and temporary variables: aMessage: a Message with selector: #bytesPerElement and arguments: #() Receiver's instance variables: a ShortPointArray(0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0) RWBinaryOrTextStream(PositionableStream)>>nextWordsInto: Receiver: a RWBinaryOrTextStream Arguments and temporary variables: aBitmap: a ShortPointArray(0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0 0@0) blt: nil pos: nil source: nil Receiver's instance variables: collection: '''From Squeak3.5 of ''''11 April 2003'''' [latest update: #5180] o...etc... position: 8494 readLimit: 214125 writeLimit: 214125 isBinary: true ShortPointArray class(ArrayedCollection class)>>newFromStream: Receiver: ShortPointArray Arguments and temporary variables: s: a RWBinaryOrTextStream len: 12 Receiver's instance variables: superclass: ShortIntegerArray methodDict: a MethodDictionary(#at:->a CompiledMethod (414) #at:put:->a Compile...etc... format: 770 instanceVariables: nil organization: ('accessing' at: at:put: bounds defaultElement size) subclasses: nil name: #ShortPointArray classPool: nil sharedPools: nil environment: nil category: nil SmartRefStream(DataStream)>>readWordLike Receiver: a SmartRefStream Arguments and temporary variables: refPosn: 8332 aSymbol: #ShortPointArray newClass: ShortPointArray anObject: nil Receiver's instance variables: byteStream: a RWBinaryOrTextStream topCall: #marked basePos: 152 references: an IdentityDictionary() objects: an IdentityDictionary(5->#('class structure' a Dictionary(#AbstractFon...etc... currentReference: 8332 fwdRefEnds: an IdentityDictionary() blockers: an IdentityDictionary() skipping: an IdentitySet() insideASegment: false structures: a Dictionary(#AbstractFont->#(0) #ActorState->#(0 'owningPlayer' 'p...etc... steady: a Set(Color PasteUpMorph NCEllipseMorph NCOffsetConstraintMorph Symbol ...etc... reshaped: nil renamed: a Dictionary(#FlasherMorph->#Flasher ) renamedConv: a Dictionary() superclasses: a Dictionary(#AbstractFont->#Object #ActorState->#Object #Alignme...etc... progressBar: nil objCount: nil classInstVars: nil --- The full stack --- ShortPointArray(Object)>>doesNotUnderstand: RWBinaryOrTextStream(PositionableStream)>>nextWordsInto: ShortPointArray class(ArrayedCollection class)>>newFromStream: SmartRefStream(DataStream)>>readWordLike - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - SmartRefStream(DataStream)>>next SmartRefStream(ReferenceStream)>>next SmartRefStream>>next SmartRefStream(DataStream)>>readArray SmartRefStream(DataStream)>>next SmartRefStream(ReferenceStream)>>next SmartRefStream>>next TTGlyph(Object)>>readDataFrom:size: SmartRefStream>>readInstanceSize:clsname:refPosn: SmartRefStream>>readShortInst SmartRefStream(DataStream)>>next SmartRefStream(ReferenceStream)>>next SmartRefStream>>next SmartRefStream(DataStream)>>readArray SmartRefStream(DataStream)>>next SmartRefStream(ReferenceStream)>>next SmartRefStream>>next TTFontDescription(Object)>>readDataFrom:size: SmartRefStream>>readInstanceSize:clsname:refPosn: SmartRefStream>>readShortInst SmartRefStream(DataStream)>>next SmartRefStream(ReferenceStream)>>next SmartRefStream>>next TTSampleStringMorph(Object)>>readDataFrom:size: SmartRefStream>>readInstanceSize:clsname:refPosn: SmartRefStream>>readShortInst SmartRefStream(DataStream)>>next SmartRefStream(ReferenceStream)>>next SmartRefStream>>next SmartRefStream(DataStream)>>readArray SmartRefStream(DataStream)>>next SmartRefStream(ReferenceStream)>>next SmartRefStream>>next OrderedCollection(Object)>>readDataFrom:size: SmartRefStream>>readInstanceSize:clsname:refPosn: SmartRefStream>>readShortInst SmartRefStream(DataStream)>>next SmartRefStream(ReferenceStream)>>next SmartRefStream>>next ...etc...

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Squeak People posting summary
by cg＠cdegroot.com 01 Dec '03

01 Dec '03

Below are the most recent 5 articles that were posted on Squeak People (http://people.squeakfoundation.org/). Apart from the articles, you will find people's diary entries there, and an overview of the Squeak community: who is doing what, people's "standing", etcetera. If you don't have an account, please join - we're interested in getting to know you better! This message is posted automatically every week by a dirty shell script. _________________________________________________________________ Date: 2003-11-28 11:18:16 Author: bjb Title: SUnit Tests - A convert Last night while working on my RPN calculator application I decided to add some SUnit tests. I was very impressed with the SUnit framework. I am now an SUnit convert. _________________________________________________________________ Date: 2003-11-27 23:38:42 Author: KenCausey Title: Welcome New Guide: Marcus Denker The Squeak Guides [1]welcome Marcus Denker as their newest member replacing Daniel Vainsencher who [2]recently retired to devote more time to his education. _________________________________________________________________ Date: 2003-11-24 21:22:56 Author: Jecel Title: Where can we add simplicity? In a layered system, a higher layer can hide complexity from the lower ones or it can implement more complex things in terms of simpler ones offered in the lower layers. We should think about this for Squeak. _________________________________________________________________ Date: 2003-11-19 16:44:09 Author: TorstenBergmann Title: Squeak Newsgroups Afraid of too much traffic on the squeak developer lists? Use news://news.gmane.org for getting Newsgroup access. _________________________________________________________________ Date: 2003-11-18 21:13:09 Author: KenCausey Title: For the Observers (and Apprentices) Interested in Squeak but having trouble getting started? Want to contribute but aren't sure how? Try the [3]#squeak IRC channel on [4]irc.freenode.net. --- (end of posting. Thank you for your patience)

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Re: Redirecting messages on the VM
by ducasse 01 Dec '03

01 Dec '03

Hi javier I suggest you to read this paper: http://www.iam.unibe.ch/~scg/Archive/Papers/Duca99aMsgPassingControl.pdf stef On Lundi, déc 1, 2003, at 00:15 Europe/Zurich, Javier Lanatta wrote: > Hi everybody, > I'm doing a research work for my OOD class at university and I'm a > little lost... So I come here looking for your help :) I'm sorry to > tell you > that this email is gonna be kinda long, anyway I will try to write > only the > most relevant things. > > For this research work I have to write a set of tools that allows > the user to define what should be done when a given object receives a > given > message. > These are examples of what the tools must do: > - When a given instance of RectangleMorph receives #addMorph: this > should be logged and then the instance finally receives the #addMorph: > - When any instance of Array receives #add: this message should be > sent to the instance only if the add's argument belongs to a given > class. > > I have most of the model finished. But I have problems intercepting > the messages. > > By now I'm only trying to redirect every message to an object of a > fixed class to another fixed object. Both the class of the first > object and > the second object are stored in the Special Objects Array. Later I will > replace the receiver with a fixed object that will act as an entry > point and > it will redirect the message inside the "object's world" to other > objects > that will do all the work. > > I have tried two approaches without luck. > > 1.- Replace the receiver @ Interpreter>>internalActivateNewMethod > > I overwrote the receiver after the real receiver and its arguments are > stored: > ... > ... > "Copy the reciever and arguments..." > argCount2 _ argumentCount. > 0 to: argCount2 do: > [:i | self storePointerUnchecked: ReceiverIndex+i ofObject: > newContext > withValue: (self internalStackValue: argCount2-i)]. > > "here comes my code" > rcvr _ self internalStackValue: argumentCount. > self assertClassOf: rcvr is: (self splObj: MRFAux1). > successFlag ifTrue: > [ > self print: 'Intercepting...';cr. > self storePointerUnchecked: ReceiverIndex+argumentCount ofObject: > newContext withValue: (self splObj: MRFAux2). > ]. > "and here it ends" > ... > ... > > MRFAux1: Contains the class of the object I want to intercept. > MRFAux2: Contains the receiver. > > I guess I'm storing it in the wrong position... I have tried several > indexes > without any good result. > > > 2.- Send the message the same way a #doesNotUnderstand is sent @ > Interpreter>>lookupMethodInClass: class > > When the method is found in the dictionary I just send the message to > the > other object creating a message in the doesNotUnderstand fashion: > > .... > .... > found _ self lookupMethodInDictionary: dictionary. > found ifTrue: [ > rcvr _ self internalStackValue: argumentCount. > self assertClassOf: rcvr is: (self splObj: MRFAux1). > successFlag ifTrue: > self print: 'Intercepting @ lookupMethodInClass...';cr. > self pushRemappableOop: (self splObj: MRFEntryPoint). > self createActualMessageTo: (self splObj: MRFEntryPoint). > rclass _ self popRemappableOop. > messageSelector _ self splObj: MRFAux2. > ^ self lookupMethodInClass: rclass > ] ifFalse: [ > ^ methodClass _ currentClass > ]. > ]. > .... > .... > MRFAux1: Contains the class of the object I want to intercept. > MRFEntryPoint: Contains the receiver. > MRFAux2: Contains the selector I want to send to the new receiver. > > In this case I cant compile the generated code :/ > > ./release/gnu-interp.o: In function `findNewMethodInClass': > //D/J4V13R/SqueakImages/TP/src/3.5.1/win32/gnu-interp.c:3388: undefined > reference to `lookupMethodInClass' > ./release/gnu-interp.o: In function `interpret': > //D/J4V13R/SqueakImages/TP/src/3.5.1/win32/gnu-interp.c:6756: undefined > reference to `lookupMethodInClass' > > I browse the gnu-interp.c file and the function lookupMethodInClass is > missiong, if I remove the lines I added the code is ok... I have no > clue of > what's going on. > > Is there a better way to do this? Where any of my ideas right? What was > wrong in their implementation? > > Thanks in advance, > Javier > > > Some background information: > Squeak Version: 3.6 > Virtual Machine: 3.5.1/Tea 1.9 VM (release) from June 21 2003 I've been > using Squeak for about 9 months. > > >

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Re: Squeak on the Sigmarion III
by Dean_Swan＠Mitel.COM 01 Dec '03

01 Dec '03

Hi Aaron, The real question would be what support chips they used in the Sigmarion III. If it uses any of the Samsung devices that HP is using in the iPAQs these days, then there is a better chance that something may get done that would be applicable to the Sigmarion III. -Dean Aaron J Reichow <reic0024(a)d.umn.edu> Sent by: squeak-dev-bounces(a)lists.squeakfoundation.org 11/29/03 12:28 AM Please respond to The general-purpose Squeak developers list To: The general-purpose Squeak developers list <squeak-dev(a)lists.squeakfoundation.org> cc: Subject: Re: Squeak on the Sigmarion III I said the *device* was rare, not the CPU; "device" is a pretty common way to refer to a PDA, in this context referring to the particular model in question- the Sigmarion III. Which, being a Japan-only item with all Japanese text and no known way to localize to English, is not surprisingly a relatively rare item in the English speaking world. Regards, Aaron -- "the profit system follows the path of least resistance and following the path of least resistance is what makes a river crooked." :: u. utah phillips On Fri, 28 Nov 2003, Timothy Rowledge wrote: > > On Friday, November 28, 2003, at 10:57 AM, Aaron J Reichow wrote: > > I imagine something may come up eventually. There have been Unix > > ports to > > various XScale devices. Although if there isn't much interest it may > > never > > happen, with it being a rare device in the english speaking world. > Gronk? XScale is the current main ARM cpu version for all pocketPC > machines. Hardly 'rare'. > > tim > >

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[BUG] Loading project
by raymondasselin＠sympatico.ca 01 Dec '03

01 Dec '03

Trying to load a project previously saved from/to a Squeak 3.5 image I got this message 'No project found on this file' even if the file is 235,891 bytes

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Re: [TFNR] Looking for maintainers!
by diegogomezdeck＠consultar.com 01 Dec '03

01 Dec '03

Hi Guys... [snip] > Volunteers? I want to postulate myself to be the maintainer (or one of the maintainers) of eToys and to be the "assembler" (or one of the assemblers) of the Full- Image. eToys: The initial set of goals I want to push in eToys are the followings: - Synchronize the Squeakland's image with the "big" one. The eToys in Squeakland's image evolved and these changes are not in the big image. - Make eToys translatable with Babel. It means to remove the current translation mechanism and replace it by Babel. - Coordinate the work with "Squeaklanders" to keep the 2 versions synchronized. - Expand eToys to cover more morphs and more functionality. -- Example: InternalThreadNavigatorMorph has to be scriptable from eToys to create active essays with complex navigation flows, etc. -- All the multimedia morphs has to be fully scriptable from eToys. MediaSqueak (aka Full-Image): For the Full-Image the goal is to make this distribution the "MediaSqueak". The full image has to include all the media stuff available in SM (Connectors, More graphics files support, Video Processing, TTF, etc). Also the full image has to include all the languages available for Babel and some good initial look&feel. Since SqC moves away we're working to have less in the image I think we need somebody that can take care of giving more in the full-image. What can I offer: Since January/2004 (or before) I'll have a full-time job with Squeak working with the folks from LinEx project. Just now we're using a customized 3.5 based image (The Small-Land's one). My plan is to combine these 2 projects and build the Small-Land image on top of the full one. I'd like to hear your opinions... Cheers, -- Diego Gomez Deck http://www.small-land.org

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[ANN2] Small extensions for Connectors 1.9
by raymondasselin＠sympatico.ca 01 Dec '03

01 Dec '03

For now I put everything in class side this seem easier for me than to spray everything with that a small improvment. May be a visitor pattern may help some day. And...I pretty sure Ned implement one somewhere....I did'nt check yet. Raymond -----

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