November 2013 - Pharo-users

How images can be loaded
by Ronie Salgado Nov. 23, 2013

Nov. 23, 2013

Hello, I would like to know how I could load .png image into pharo, and being able to access to their pixel data for manipulation or display it. Greetings, Ronie Salgado

4 4

How to combine Pharo Desktop and Seaside?
by steliosgan Nov. 22, 2013

Nov. 22, 2013

Hello, I am a newbie at smalltalk and I do not feel so comfortable with the following question : I have created an application with Pharo 2.0 and I would like to know if I could present dynamically some results to an html page, using seaside. (Actually, I have a class that creates an OrderedCollection and I want to create an html table to fill it with the data from the collection).Is it feasible? Thank you -- View this message in context: http://forum.world.st/How-to-combine-Pharo-Desktop-and-Seaside-tp4724166.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

5 7

How to combine Pharo Desktop and Seaside?
by Torsten Bergmann Nov. 22, 2013

Nov. 22, 2013

You can initialize your instance variable in an initialize method WAComponent subclass: #PrintHtml instanceVariableNames: 'tasks' classVariableNames: '' poolDictionaries: '' category: 'KillerApp-Web-UI' Then a method to initialize on the instance side PrintHtml>>initialize: initialize "initialize the receiver" super initialize. tasks := #('read' 'before' 'you' 'try') If you send #new to a class this #initialize method is automatically called. If you do not want it use #basicNew. So if you enter PrintHtml new in a workspace and select "Inspect it" to open an inspector on the new object this method gets called and therfore you will see that the instance variable should have the collection as contents. Side note: Do not forget the "super initialize" in this method - otherwise superclass initialization for seaside components is not done. Then use a normal rendering method to display the ivar in the browser renderContentOn: html html orderedList list: tasks If I understand you correctly you want to know how you acces the Seaside generated code for a WAComponent subclass also in a workspace. This is easy: |component| component := PrintHtml new. "your seaside component" WARenderCanvas builder render: [ :html | html render: component ] which should return the generated HTML: '<ol><li>read</li><li>before</li><li>you</li><li>try</li></ol>' now. That is one way. The preferred way for Seasiders is to directly look at the generated HTML code in the webbrowser. Just go to your app: http://localhost:8080/killerapp Down at the bottom you will find the seaside development toolbar (only visible when developing) and then click on "Halo". Now Seaside renders a rectangle around each component and you can click on "Source" to Switch to the source of a component. Also try the other buttons there. For sure you should read one of the introduction stuff on Seaside, I would recommend the online Seaside book: http://book.seaside.st/book Bye T.

1 0

Re: [Pharo-users] Writing a GUI - Where to start?
by Stephan Eggermont Nov. 22, 2013

Nov. 22, 2013

Johan wrote: >I recommend you to go with Spec. It is the newest and designed to be the most capable. It is also the way forward, it will be the 'standard' GUI builders >in the future. We know that the documentation right now is far from optimal. Ben and I will work on that in January. Iâd recommend to try to build your application with Glamour first. Only if that doesnât provide a good fit, take a look at spec. Spec is much more powerful, but too low level for most applications. Stephan

2 1

Re: [Pharo-users] State of Flamel?
by Stephan Eggermont Nov. 22, 2013

Nov. 22, 2013

The dependency on AST-Core is removed. I guess it makes sense to have a ci build for this. Can I get access to pharo-contributions to create a build? Stephan

1 0

Any problems known here?
by Friedrich Dominicus Nov. 22, 2013

Nov. 22, 2013

I wonder if anyone has problems running a Pharo on a 64-bit System (Debian) with multiarch. Because strange enough it can suddenly not find vm-display-X11 any more Regards Friedrich -- Q-Software Solutions GmbH; Sitz: Bruchsal; Registergericht: Mannheim Registriernummer: HRB232138; Geschaeftsfuehrer: Friedrich Dominicus

3 5

Scaled PNG image
by Hilaire Fernandes Nov. 22, 2013

Nov. 22, 2013

Hello, In Pharo 2.0 (true in 1.4 as well), it looks PNG bitmap are wrongly rotated or scaled when they contain alpha transparency. In the example bellow with the joined bitmap, the alpha gray color are rendered darker when the imagemorph is scaled or rotated. Sqeak does not suffer this problem | dir morph transform form| dir := FileSystem disk workingDirectory parent. morph := (ImageReadWriter formFromFileNamed: (dir / 'bubble.png') fullName) asMorph. transform := TransformationMorph new asFlexOf: morph. transform smoothingOn ; angle: Float pi / 3; scale: 1. transform openInWorld Thanks Hilaire -- Dr. Geo http://drgeo.eu

4 8

[launcher] Re: [Pharo-dev] PharoLauncher
by btc＠openinworld.com Nov. 21, 2013

Nov. 21, 2013

Well spotted. It is explained by PharoLauncher>>setImageRepository: aTemplateRepository templateRepository: anImageRepository also being wrong and reversed. If you might like to contribute to PharoLauncher and want to get into the swing of things, pharo.fogbugz.com has a 'Launcher' project'where you can log Cases to which you can attach mcz files. btw, you might find the various #settingsOn: methods interesting. btw2, for a while I had been collaborating with Damien in private, but we recently decided to move this to [pharo-users] and adding a [launcher] tag. I've cross-posted there. cheers -ben Mark Bestley wrote: > On 21/11/2013 15:00, Sean P. DeNigris wrote: >> Just starting to play with it... looks cool. >> >> One thing is that I'd like to be able to choose the default image >> location. >> It feels wrong to install them under ~/Library/Preferences on the Mac... >> > > Agreed > > > However I am confused by the code > > createLauncher > ^ self basicNew > setImageRepository: PhLTemplateGroupRepository > forSelectedGroups > templateRepository: PhLDirectoryBasedImageRepository > inPharoPreferencesDirectory; > initialize; > yourself > > Aren't the parameters of setImage and template the wrong way round? ie > it seems to pass the template dir to the image and vice versa >

1 0

Re: [Pharo-users] Help with SQLite3 package
by Joachim Tuchel Nov. 21, 2013

Nov. 21, 2013

Michel, Maybe you should consider using a link instead of a copy of the file. I would also suggest to only add a link within to the sqlite installation directory rather than the pharo directory. Because then pharo will find sqlite3.so as well and you have way fewer dependencies. Joachim Michel <michel.revesche(a)wanadoo.fr> schrieb: >Hi Joachim, > >I have a sqlite library in /usr/lib named 'libsqlite3.so.0.8.6'. This >directory is of course in the path. > >I made a copy of this library in my pharo2.0/bin directory and changed >its name to 'libsqlite3.so' and it fixed the problem ! > >So I got it thanks to your help and a little luck. Depending on the >linux distro this library name would differ. Somebody knows where it is >defined in the image ? > >Regards, >Michel. > >> Hi Michel, >> >> I am neither a Pharo nor a sqlite expert, but I would guess the sqlite >> library is not in your image directory or you are starting pharo >> without setting the PATH to a location that contains the sqlite library. >> >> HTH, >> >> Joachim >> >> Am 20.11.13 18:13, schrieb Michel: >>> Hi pharoers, >>> >>> I am a newbie with Pharo. >>> >>> I installed the SQLite3 package in the Pharo2 image with the >>> MetacelloConfigurationBrowser and tried a test with this script : >>> db := SQLiteConnection fileNamed: '/home/michel/base_CD/BaseCD.db'. >>> resu := db executeQuery: 'SELECT * FROM T_album'. >>> resu inspect. >>> >>> And I got this error : External module not found. >>> >>> I am on Fedora linux and I think that I should give somewhere (in >>> SQLiteReference class ?) the address of the libsqlite3.so file. Am I >>> right ? >>> >>> Kind Regards, >>> Michel. >>> >>> >> >> > > >

2 1

Help with SQLite3 package
by Michel Nov. 21, 2013

Nov. 21, 2013

Hi pharoers, I am a newbie with Pharo. I installed the SQLite3 package in the Pharo2 image with the MetacelloConfigurationBrowser and tried a test with this script : db := SQLiteConnection fileNamed: '/home/michel/base_CD/BaseCD.db'. resu := db executeQuery: 'SELECT * FROM T_album'. resu inspect. And I got this error : External module not found. I am on Fedora linux and I think that I should give somewhere (in SQLiteReference class ?) the address of the libsqlite3.so file. Am I right ? Kind Regards, Michel.

3 3

Re: [Pharo-users] #subStrings: alternative preserving separators
by Joachim Tuchel Nov. 21, 2013

Nov. 21, 2013

In VA, tgey just introduced allSubStrings: for this matter, because subStrings was changed to return only non-empty parts... Do you find that in Pharo? Joachim "Esteban A. Maringolo" <emaringolo(a)gmail.com> schrieb: >I have a string like 'foo|bar||foobar|' and I want to split it into >separate tokens like: > >'foo|bar||foobar|' subStrings: $| -> #('foo' 'bar' '' 'foobar' ''). > >It is... to INCLUDE empty strings (or nil for that case) for the >elements between to consecutive separators. > >I can't found a method implementing this in Pharo (in Dolphin it works >as I expect). > >Thank you! > >Esteban A. Maringolo > >

4 3

SimplePersistence ...
by Torsten Bergmann Nov. 21, 2013

Nov. 21, 2013

>> Good work! I happy for each new project on pharo-contribution. >> This is the evolution of pharo-contribution over the last year! >> <showChart.png> > >Impressive. > >Thank you, and the rest of the team, and INRIA, for this very useful resource. Yes, thank you! And the story continues: with the PharoLauncher project [1] one is able to easily download a CI built image and run it locally. [1] https://ci.inria.fr/pharo-contribution/job/PharoLauncher/

2 1

Problems while loading Magritte to pharo2.0
by Thushar G R Nov. 21, 2013

Nov. 21, 2013

Hi All, I encounter problems while installing magritte3 from the configurations browser. While loading, it removes #trimBoth #trimRight etc. messages from String. I wonder if anyone else is experiencing the problem. Thanks already, thushar

2 1

SimplePersistence ...
by Torsten Bergmann Nov. 21, 2013

Nov. 21, 2013

... moved to STHub http://smalltalkhub.com/#!/~TorstenBergmann/SimplePersistence with page providing some initial docu and links ... is now on CI https://ci.inria.fr/pharo-contribution/job/SimplePersistence/ ... is GREEN for Pharo20, Pharo30 with stable (3.0) and development (3.0.1) since a few minutes ... is loadable from Config browser in Pharo20 and Pharo3.0 Have fun Torsten and Sean

3 2

optimizing io
by Santiago Bragagnolo Nov. 20, 2013

Nov. 20, 2013

Hi all! Im making some performance enhancement on PhaROS, i realised that one of my common scenarios is having several sockets that should receive exactly the same information, in order to do that, im using n calls to the vm, which does n system-calls. I was wondering if there something done in: - send the same data to all the sockets in just one primitive - send the same data to all the sockets in just one syscall. I checked around in google but i didn't found anything useful, but probably i have no knowledge about the proper words for such search :). Thanks!

3 5

#subStrings: alternative preserving separators
by Esteban A. Maringolo Nov. 20, 2013

Nov. 20, 2013

I have a string like 'foo|bar||foobar|' and I want to split it into separate tokens like: 'foo|bar||foobar|' subStrings: $| -> #('foo' 'bar' '' 'foobar' ''). It is... to INCLUDE empty strings (or nil for that case) for the elements between to consecutive separators. I can't found a method implementing this in Pharo (in Dolphin it works as I expect). Thank you! Esteban A. Maringolo

2 1

Useful (hidden) features in Pharo 3.0
by Juraj Kubelka Nov. 19, 2013

Nov. 19, 2013

Hi, this week I have realized a lot of useful (hidden) features I did not know they exists. Those I have learned: Cmd+t â Nautilus, when method source code is displayed. It shows context menu related to the position of cursor. Cmd+Shift+p â Nautilus, in method source code, it extends selection according to AST Shift+Enter â Spotlight Do you know others? Thanks, Jura

5 5

Useful (hidden) features in Pharo 3.0
by Torsten Bergmann Nov. 18, 2013

Nov. 18, 2013

Phil wrote: >Not on Windows. Alt-Click doesn't work either. >What works is select the word and Ctrl-Enter to jump. Did you try "Alt" + right mouse click on a class to jump. Works for me. Thx T.

1 0

Pyret: adding tests directly into classes
by Andy Burnett Nov. 18, 2013

Nov. 18, 2013

I have just come across the Pyret language. It looks interesting, but the part which particularly caught my interest was the way that they had built the unit tests directly into the classes, rather than having separate test classes. I think this is an interesting idea. It seems as though it would be easier to manage writing tests if everything were in one location. And this - might - mean that people were more likely to write tests. Has anyone else looked at this, and have an opinion on whether it would be a good addition to Pharo 4/5/X? Cheers Andy

7 7

CogVM arguments in Win32
by Torsten Bergmann Nov. 18, 2013

Nov. 18, 2013

Hi Bernat, >how do I translate this into NB code Either invite Igor (author of NB) for lunch or try this: Its a C-structure, you convert it by wrapping this in a sublcass of "NBExternalStructure". See the examples already in a Pharo 3.0 image. Basically you need: - define a subclass NBExternalStructure subclass: #WinNotifyIconData ... - define the correct fields in a class side #fieldsDesc method according to the native data types used in the structure - call "WinNotifyIconData rebuildFieldAccessors" - setup the types in a shared pool that you can include later: - define the pool: SharedPool subclass: #WinTryIconConstants ... - in a class initialize method you can setup the type initialize NOTIFYICONDATA := #WinNotifyIconData. PNOTIFYICONDATA:= 'NOTIFYICONDATA *'. - by including the pool you can use "NOTIFYICONDATA" or "PNOTIFYICONDATA" in any native boost call. If you are in Pharo 3.0 load "OS-Windows" package from the config browser. Check the subclasses of NBExternalStructure there. I wrapped many other windows structures already so you can get an idea about it. For instance have a look at WinConsoleConstants>>initTypeConstants, there you will find the CONSOLE_CURSOR_INFO, CONSOLE_SCREEN_BUFFER_INFO structs wrapped in WinConsoleCursor, WinConsoleScreenBuffer classes. Compare them with the MSDN struct description. >Could the Windows API be any more convoluted and dev-unfriendly in any >possible sense? This question should go to M$ not Pharo-user ;) Bye T. BTW: I'm not sure "PNOTIFYICONDATA" alone will solve your problem if I remember correctly from my Smalltalk/MT and C/C++ times also playing with tray icons. I guess you need a callback that gets called when the icon is clicked or the tray icon menu is choosen (see uCallbackMessage member in the struct). You also need a handle to an icon - either the icon from the EXEs resource section or by loading one from a bitmap. That means wrapping the icon or bitmap apis too...

4 4

Re: [Pharo-users] Pyret: adding tests directly into classes
by Andy Burnett Nov. 18, 2013

Nov. 18, 2013

Esteban said <<< Hi, It does not really matters where you put the test. What matters is to have the tools that show them properly, and we are going in that direction. We already have ways to "jump to tests" in Nautilus, and we will continue improving that to show them together (for example). But I do not think the tests need to be *in* the class definition to have same level of interoperation. Esteban >>> I agree. The actual architecture doesn't matter. The critical factor is making it as easy as possible to write/navigate tests. I didn't know about the Nautilus features. I shall have to go and experiment. Also, thinking about Doru's point. I wonder if we could write tests/examples in the comments section of code. It might be an interesting addition

3 2

Help in St. Petersburg?
by HernÃ¡n Morales Durand Nov. 17, 2013

Nov. 17, 2013

I am sorry for the off-topic. A friend of mine was stolen in Sofia and now she is completely out of money going to St. Petersburg in a few days. Anyone there who can help her a little bit would be really appreciated. Cheers, HernÃ¡n

1 0

Re: [Pharo-users] Pyret: adding tests directly into classes
by Andy Burnett Nov. 17, 2013

Nov. 17, 2013

Doru said: <<< I stumbled across this idea when Markus Gaelli chose it as a PhD topic about ten years ago (man, I'm old). The main idea was not to provide tests, but examples that happened to have assertions. The goal was twofold: (1) provide live documentation with real objects, (2) provide another way of composing tests. The project did not really come to fruition, but I still think this is highly interesting topic. Part of the ideas were later implemented in Phexample (http://www.smalltalkhub.com/#!/~Phexample/Phexample/) and JExample (http://scg.unibe.ch/research/jexample) >>> That's really interesting. I had never heard of Phexample - so many interesting projects, so little time! - I like the approach of building on tests. Do you know if this will work in Pharo 3? Also, I may have misunderstood what Pyret was doing. Perhaps it is more about examples.

1 0

Re: [Pharo-users] i18n - Where to start?
by Stephan Eggermont Nov. 17, 2013

Nov. 17, 2013

Here is a demo of the i18n support in QCMagritte. It supports live editing of the languages and strings used in your application. youtu.be/cTut44Xs3_U Stephan

2 1

Re: [Pharo-users] i18n - Where to start?
by Stephan Eggermont Nov. 16, 2013

Nov. 16, 2013

In the multi language demo of QCMagritte, a magritte visitor is used that changes all label:, checkboxLabel:, comment: and group: sends in descriptions to automatically use a multilanguagestring. The parameter is used as the key. All unique keys are collected. The default translation is the key. That is used for missing translations. Languages can be added on the fly. The demo has a simple UI to directly add and change translations. The whole translation table can be written to csv, and read back. This is not shown in the video Stephan Verstuurd vanaf mijn iPhone

1 0